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reactos/dll/win32/comctl32/edit.c
Stanislav Motylkov cd7011388e [COMCTL32] Edit: Fix caret and scroll position 
Based on patch by JIRA contributor 'I_Kill_Bugs'. CORE-15780
2019-03-24 23:26:20 +01:00

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/*
* Edit control
*
* Copyright David W. Metcalfe, 1994
* Copyright William Magro, 1995, 1996
* Copyright Frans van Dorsselaer, 1996, 1997
* Copyright Frank Richter, 2005
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* TODO:
* - EDITBALLOONTIP structure
* - EM_GETCUEBANNER/Edit_GetCueBannerText
* - EM_HIDEBALLOONTIP/Edit_HideBalloonTip
* - EM_SETCUEBANNER/Edit_SetCueBannerText
* - EM_SHOWBALLOONTIP/Edit_ShowBalloonTip
* - EM_GETIMESTATUS, EM_SETIMESTATUS
* - EN_ALIGN_LTR_EC
* - EN_ALIGN_RTL_EC
* - ES_OEMCONVERT
*
*/
#include "config.h"
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "imm.h"
#include "usp10.h"
#include "commctrl.h"
#include "uxtheme.h"
#include "vsstyle.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include "wine/heap.h"
WINE_DEFAULT_DEBUG_CHANNEL(edit);
#define BUFLIMIT_INITIAL 30000 /* initial buffer size */
#define GROWLENGTH 32 /* buffers granularity in bytes: must be power of 2 */
#define ROUND_TO_GROW(size) (((size) + (GROWLENGTH - 1)) & ~(GROWLENGTH - 1))
#define HSCROLL_FRACTION 3 /* scroll window by 1/3 width */
/*
* extra flags for EDITSTATE.flags field
*/
#define EF_MODIFIED 0x0001 /* text has been modified */
#define EF_FOCUSED 0x0002 /* we have input focus */
#define EF_UPDATE 0x0004 /* notify parent of changed state */
#define EF_VSCROLL_TRACK 0x0008 /* don't SetScrollPos() since we are tracking the thumb */
#define EF_HSCROLL_TRACK 0x0010 /* don't SetScrollPos() since we are tracking the thumb */
#define EF_AFTER_WRAP 0x0080 /* the caret is displayed after the last character of a
wrapped line, instead of in front of the next character */
#define EF_USE_SOFTBRK 0x0100 /* Enable soft breaks in text. */
#define EF_DIALOGMODE 0x0200 /* Indicates that we are inside a dialog window */
#define ID_CB_LISTBOX 1000
typedef enum
{
END_0 = 0, /* line ends with terminating '\0' character */
END_WRAP, /* line is wrapped */
END_HARD, /* line ends with a hard return '\r\n' */
END_SOFT, /* line ends with a soft return '\r\r\n' */
END_RICH /* line ends with a single '\n' */
} LINE_END;
typedef struct tagLINEDEF {
INT length; /* bruto length of a line in bytes */
INT net_length; /* netto length of a line in visible characters */
LINE_END ending;
INT width; /* width of the line in pixels */
INT index; /* line index into the buffer */
SCRIPT_STRING_ANALYSIS ssa; /* Uniscribe Data */
struct tagLINEDEF *next;
} LINEDEF;
typedef struct
{
LPWSTR text; /* the actual contents of the control */
UINT text_length; /* cached length of text buffer (in WCHARs) - use get_text_length() to retrieve */
UINT buffer_size; /* the size of the buffer in characters */
UINT buffer_limit; /* the maximum size to which the buffer may grow in characters */
HFONT font; /* NULL means standard system font */
INT x_offset; /* scroll offset for multi lines this is in pixels
for single lines it's in characters */
INT line_height; /* height of a screen line in pixels */
INT char_width; /* average character width in pixels */
DWORD style; /* sane version of wnd->dwStyle */
WORD flags; /* flags that are not in es->style or wnd->flags (EF_XXX) */
INT undo_insert_count; /* number of characters inserted in sequence */
UINT undo_position; /* character index of the insertion and deletion */
LPWSTR undo_text; /* deleted text */
UINT undo_buffer_size; /* size of the deleted text buffer */
INT selection_start; /* == selection_end if no selection */
INT selection_end; /* == current caret position */
WCHAR password_char; /* == 0 if no password char, and for multi line controls */
INT left_margin; /* in pixels */
INT right_margin; /* in pixels */
RECT format_rect;
INT text_width; /* width of the widest line in pixels for multi line controls
and just line width for single line controls */
INT region_posx; /* Position of cursor relative to region: */
INT region_posy; /* -1: to left, 0: within, 1: to right */
EDITWORDBREAKPROCW word_break_proc;
INT line_count; /* number of lines */
INT y_offset; /* scroll offset in number of lines */
BOOL bCaptureState; /* flag indicating whether mouse was captured */
BOOL bEnableState; /* flag keeping the enable state */
HWND hwndSelf; /* the our window handle */
HWND hwndParent; /* Handle of parent for sending EN_* messages.
Even if parent will change, EN_* messages
should be sent to the first parent. */
HWND hwndListBox; /* handle of ComboBox's listbox or NULL */
INT wheelDeltaRemainder; /* scroll wheel delta left over after scrolling whole lines */
/*
* only for multi line controls
*/
INT lock_count; /* amount of re-entries in the EditWndProc */
INT tabs_count;
LPINT tabs;
LINEDEF *first_line_def; /* linked list of (soft) linebreaks */
HLOCAL hloc32W; /* our unicode local memory block */
HLOCAL hlocapp; /* The text buffer handle belongs to the app */
/*
* IME Data
*/
UINT composition_len; /* length of composition, 0 == no composition */
int composition_start; /* the character position for the composition */
/*
* Uniscribe Data
*/
SCRIPT_LOGATTR *logAttr;
SCRIPT_STRING_ANALYSIS ssa; /* Uniscribe Data for single line controls */
} EDITSTATE;
#define SWAP_UINT32(x,y) do { UINT temp = (UINT)(x); (x) = (UINT)(y); (y) = temp; } while(0)
#define ORDER_UINT(x,y) do { if ((UINT)(y) < (UINT)(x)) SWAP_UINT32((x),(y)); } while(0)
/* used for disabled or read-only edit control */
#define EDIT_NOTIFY_PARENT(es, wNotifyCode) \
do \
{ /* Notify parent which has created this edit control */ \
TRACE("notification " #wNotifyCode " sent to hwnd=%p\n", es->hwndParent); \
SendMessageW(es->hwndParent, WM_COMMAND, \
MAKEWPARAM(GetWindowLongPtrW((es->hwndSelf),GWLP_ID), wNotifyCode), \
(LPARAM)(es->hwndSelf)); \
} while(0)
static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap);
/*********************************************************************
*
* EM_CANUNDO
*
*/
static inline BOOL EDIT_EM_CanUndo(const EDITSTATE *es)
{
return (es->undo_insert_count || strlenW(es->undo_text));
}
/*********************************************************************
*
* EM_EMPTYUNDOBUFFER
*
*/
static inline void EDIT_EM_EmptyUndoBuffer(EDITSTATE *es)
{
es->undo_insert_count = 0;
*es->undo_text = '\0';
}
static HBRUSH EDIT_NotifyCtlColor(EDITSTATE *es, HDC hdc)
{
HBRUSH hbrush;
UINT msg;
if ((!es->bEnableState || (es->style & ES_READONLY)))
msg = WM_CTLCOLORSTATIC;
else
msg = WM_CTLCOLOREDIT;
/* Why do we notify to es->hwndParent, and we send this one to GetParent()? */
hbrush = (HBRUSH)SendMessageW(GetParent(es->hwndSelf), msg, (WPARAM)hdc, (LPARAM)es->hwndSelf);
if (!hbrush)
hbrush = (HBRUSH)DefWindowProcW(GetParent(es->hwndSelf), msg, (WPARAM)hdc, (LPARAM)es->hwndSelf);
return hbrush;
}
static inline UINT get_text_length(EDITSTATE *es)
{
if(es->text_length == (UINT)-1)
es->text_length = strlenW(es->text);
return es->text_length;
}
/*********************************************************************
*
* EDIT_WordBreakProc
*
* Find the beginning of words.
* Note: unlike the specs for a WordBreakProc, this function can
* only be called without linebreaks between s[0] up to
* s[count - 1]. Remember it is only called
* internally, so we can decide this for ourselves.
* Additionally we will always be breaking the full string.
*
*/
static INT EDIT_WordBreakProc(EDITSTATE *es, LPWSTR s, INT index, INT count, INT action)
{
INT ret = 0;
TRACE("s=%p, index=%d, count=%d, action=%d\n", s, index, count, action);
if(!s) return 0;
if (!es->logAttr)
{
SCRIPT_ANALYSIS psa;
memset(&psa,0,sizeof(SCRIPT_ANALYSIS));
psa.eScript = SCRIPT_UNDEFINED;
es->logAttr = heap_alloc(sizeof(SCRIPT_LOGATTR) * get_text_length(es));
ScriptBreak(es->text, get_text_length(es), &psa, es->logAttr);
}
switch (action) {
case WB_LEFT:
if (index)
index--;
while (index && !es->logAttr[index].fSoftBreak)
index--;
ret = index;
break;
case WB_RIGHT:
if (!count)
break;
while (index < count && s[index] && !es->logAttr[index].fSoftBreak)
index++;
ret = index;
break;
case WB_ISDELIMITER:
ret = es->logAttr[index].fWhiteSpace;
break;
default:
ERR("unknown action code, please report !\n");
break;
}
return ret;
}
/*********************************************************************
*
* EDIT_CallWordBreakProc
*
* Call appropriate WordBreakProc (internal or external).
*
* Note: The "start" argument should always be an index referring
* to es->text. The actual wordbreak proc might be
* 16 bit, so we can't always pass any 32 bit LPSTR.
* Hence we assume that es->text is the buffer that holds
* the string under examination (we can decide this for ourselves).
*
*/
static INT EDIT_CallWordBreakProc(EDITSTATE *es, INT start, INT index, INT count, INT action)
{
INT ret;
if (es->word_break_proc)
ret = es->word_break_proc(es->text + start, index, count, action);
else
ret = EDIT_WordBreakProc(es, es->text, index + start, count + start, action) - start;
return ret;
}
static inline void EDIT_InvalidateUniscribeData_linedef(LINEDEF *line_def)
{
if (line_def->ssa)
{
ScriptStringFree(&line_def->ssa);
line_def->ssa = NULL;
}
}
static inline void EDIT_InvalidateUniscribeData(EDITSTATE *es)
{
LINEDEF *line_def = es->first_line_def;
while (line_def)
{
EDIT_InvalidateUniscribeData_linedef(line_def);
line_def = line_def->next;
}
if (es->ssa)
{
ScriptStringFree(&es->ssa);
es->ssa = NULL;
}
}
static SCRIPT_STRING_ANALYSIS EDIT_UpdateUniscribeData_linedef(EDITSTATE *es, HDC dc, LINEDEF *line_def)
{
if (!line_def)
return NULL;
if (line_def->net_length && !line_def->ssa)
{
int index = line_def->index;
HFONT old_font = NULL;
HDC udc = dc;
SCRIPT_TABDEF tabdef;
HRESULT hr;
if (!udc)
udc = GetDC(es->hwndSelf);
if (es->font)
old_font = SelectObject(udc, es->font);
tabdef.cTabStops = es->tabs_count;
tabdef.iScale = GdiGetCharDimensions(udc, NULL, NULL);
tabdef.pTabStops = es->tabs;
tabdef.iTabOrigin = 0;
hr = ScriptStringAnalyse(udc, &es->text[index], line_def->net_length,
(1.5*line_def->net_length+16), -1,
SSA_LINK|SSA_FALLBACK|SSA_GLYPHS|SSA_TAB, -1,
NULL, NULL, NULL, &tabdef, NULL, &line_def->ssa);
if (FAILED(hr))
{
WARN("ScriptStringAnalyse failed (%x)\n",hr);
line_def->ssa = NULL;
}
if (es->font)
SelectObject(udc, old_font);
if (udc != dc)
ReleaseDC(es->hwndSelf, udc);
}
return line_def->ssa;
}
static SCRIPT_STRING_ANALYSIS EDIT_UpdateUniscribeData(EDITSTATE *es, HDC dc, INT line)
{
LINEDEF *line_def;
if (!(es->style & ES_MULTILINE))
{
if (!es->ssa)
{
INT length = get_text_length(es);
HFONT old_font = NULL;
HDC udc = dc;
if (!udc)
udc = GetDC(es->hwndSelf);
if (es->font)
old_font = SelectObject(udc, es->font);
if (es->style & ES_PASSWORD)
ScriptStringAnalyse(udc, &es->password_char, length, (1.5*length+16), -1, SSA_LINK|SSA_FALLBACK|SSA_GLYPHS|SSA_PASSWORD, -1, NULL, NULL, NULL, NULL, NULL, &es->ssa);
else
ScriptStringAnalyse(udc, es->text, length, (1.5*length+16), -1, SSA_LINK|SSA_FALLBACK|SSA_GLYPHS, -1, NULL, NULL, NULL, NULL, NULL, &es->ssa);
if (es->font)
SelectObject(udc, old_font);
if (udc != dc)
ReleaseDC(es->hwndSelf, udc);
}
return es->ssa;
}
else
{
line_def = es->first_line_def;
while (line_def && line)
{
line_def = line_def->next;
line--;
}
return EDIT_UpdateUniscribeData_linedef(es,dc,line_def);
}
}
static inline INT get_vertical_line_count(EDITSTATE *es)
{
INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
return max(1,vlc);
}
/*********************************************************************
*
* EDIT_BuildLineDefs_ML
*
* Build linked list of text lines.
* Lines can end with '\0' (last line), a character (if it is wrapped),
* a soft return '\r\r\n' or a hard return '\r\n'
*
*/
static void EDIT_BuildLineDefs_ML(EDITSTATE *es, INT istart, INT iend, INT delta, HRGN hrgn)
{
LPWSTR current_position, cp;
INT fw;
LINEDEF *current_line;
LINEDEF *previous_line;
LINEDEF *start_line;
INT line_index = 0, nstart_line, nstart_index;
INT line_count = es->line_count;
INT orig_net_length;
RECT rc;
INT vlc;
if (istart == iend && delta == 0)
return;
previous_line = NULL;
current_line = es->first_line_def;
/* Find starting line. istart must lie inside an existing line or
* at the end of buffer */
do {
if (istart < current_line->index + current_line->length ||
current_line->ending == END_0)
break;
previous_line = current_line;
current_line = current_line->next;
line_index++;
} while (current_line);
if (!current_line) /* Error occurred start is not inside previous buffer */
{
FIXME(" modification occurred outside buffer\n");
return;
}
/* Remember start of modifications in order to calculate update region */
nstart_line = line_index;
nstart_index = current_line->index;
/* We must start to reformat from the previous line since the modifications
* may have caused the line to wrap upwards. */
if (!(es->style & ES_AUTOHSCROLL) && line_index > 0)
{
line_index--;
current_line = previous_line;
}
start_line = current_line;
fw = es->format_rect.right - es->format_rect.left;
current_position = es->text + current_line->index;
vlc = get_vertical_line_count(es);
do {
if (current_line != start_line)
{
if (!current_line || current_line->index + delta > current_position - es->text)
{
/* The buffer has been expanded, create a new line and
insert it into the link list */
LINEDEF *new_line = heap_alloc_zero(sizeof(*new_line));
new_line->next = previous_line->next;
previous_line->next = new_line;
current_line = new_line;
es->line_count++;
}
else if (current_line->index + delta < current_position - es->text)
{
/* The previous line merged with this line so we delete this extra entry */
previous_line->next = current_line->next;
heap_free(current_line);
current_line = previous_line->next;
es->line_count--;
continue;
}
else /* current_line->index + delta == current_position */
{
if (current_position - es->text > iend)
break; /* We reached end of line modifications */
/* else recalculate this line */
}
}
current_line->index = current_position - es->text;
orig_net_length = current_line->net_length;
/* Find end of line */
cp = current_position;
while (*cp) {
if (*cp == '\n') break;
if ((*cp == '\r') && (*(cp + 1) == '\n'))
break;
cp++;
}
/* Mark type of line termination */
if (!(*cp)) {
current_line->ending = END_0;
current_line->net_length = strlenW(current_position);
} else if ((cp > current_position) && (*(cp - 1) == '\r')) {
current_line->ending = END_SOFT;
current_line->net_length = cp - current_position - 1;
} else if (*cp == '\n') {
current_line->ending = END_RICH;
current_line->net_length = cp - current_position;
} else {
current_line->ending = END_HARD;
current_line->net_length = cp - current_position;
}
if (current_line->net_length)
{
const SIZE *sz;
EDIT_InvalidateUniscribeData_linedef(current_line);
EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
if (current_line->ssa)
{
sz = ScriptString_pSize(current_line->ssa);
/* Calculate line width */
current_line->width = sz->cx;
}
else current_line->width = es->char_width * current_line->net_length;
}
else current_line->width = 0;
/* FIXME: check here for lines that are too wide even in AUTOHSCROLL (> 32767 ???) */
/* Line breaks just look back from the end and find the next break and try that. */
if (!(es->style & ES_AUTOHSCROLL)) {
if (current_line->width > fw && fw > es->char_width) {
INT prev, next;
int w;
const SIZE *sz;
float d;
prev = current_line->net_length - 1;
w = current_line->net_length;
d = (float)current_line->width/(float)fw;
if (d > 1.2f) d -= 0.2f;
next = prev/d;
if (next >= prev) next = prev-1;
do {
prev = EDIT_CallWordBreakProc(es, current_position - es->text,
next, current_line->net_length, WB_LEFT);
current_line->net_length = prev;
EDIT_InvalidateUniscribeData_linedef(current_line);
EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
if (current_line->ssa)
sz = ScriptString_pSize(current_line->ssa);
else sz = 0;
if (sz)
current_line->width = sz->cx;
else
prev = 0;
next = prev - 1;
} while (prev && current_line->width > fw);
current_line->net_length = w;
if (prev == 0) { /* Didn't find a line break so force a break */
INT *piDx;
const INT *count;
EDIT_InvalidateUniscribeData_linedef(current_line);
EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
if (current_line->ssa)
{
count = ScriptString_pcOutChars(current_line->ssa);
piDx = heap_alloc(sizeof(INT) * (*count));
ScriptStringGetLogicalWidths(current_line->ssa,piDx);
prev = current_line->net_length-1;
do {
current_line->width -= piDx[prev];
prev--;
} while ( prev > 0 && current_line->width > fw);
if (prev<=0)
prev = 1;
heap_free(piDx);
}
else
prev = (fw / es->char_width);
}
/* If the first line we are calculating, wrapped before istart, we must
* adjust istart in order for this to be reflected in the update region. */
if (current_line->index == nstart_index && istart > current_line->index + prev)
istart = current_line->index + prev;
/* else if we are updating the previous line before the first line we
* are re-calculating and it expanded */
else if (current_line == start_line &&
current_line->index != nstart_index && orig_net_length < prev)
{
/* Line expanded due to an upwards line wrap so we must partially include
* previous line in update region */
nstart_line = line_index;
nstart_index = current_line->index;
istart = current_line->index + orig_net_length;
}
current_line->net_length = prev;
current_line->ending = END_WRAP;
if (current_line->net_length > 0)
{
EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
if (current_line->ssa)
{
sz = ScriptString_pSize(current_line->ssa);
current_line->width = sz->cx;
}
else
current_line->width = 0;
}
else current_line->width = 0;
}
else if (current_line == start_line &&
current_line->index != nstart_index &&
orig_net_length < current_line->net_length) {
/* The previous line expanded but it's still not as wide as the client rect */
/* The expansion is due to an upwards line wrap so we must partially include
it in the update region */
nstart_line = line_index;
nstart_index = current_line->index;
istart = current_line->index + orig_net_length;
}
}
/* Adjust length to include line termination */
switch (current_line->ending) {
case END_SOFT:
current_line->length = current_line->net_length + 3;
break;
case END_RICH:
current_line->length = current_line->net_length + 1;
break;
case END_HARD:
current_line->length = current_line->net_length + 2;
break;
case END_WRAP:
case END_0:
current_line->length = current_line->net_length;
break;
}
es->text_width = max(es->text_width, current_line->width);
current_position += current_line->length;
previous_line = current_line;
/* Discard data for non-visible lines. It will be calculated as needed */
if ((line_index < es->y_offset) || (line_index > es->y_offset + vlc))
EDIT_InvalidateUniscribeData_linedef(current_line);
current_line = current_line->next;
line_index++;
} while (previous_line->ending != END_0);
/* Finish adjusting line indexes by delta or remove hanging lines */
if (previous_line->ending == END_0)
{
LINEDEF *pnext = NULL;
previous_line->next = NULL;
while (current_line)
{
pnext = current_line->next;
EDIT_InvalidateUniscribeData_linedef(current_line);
heap_free(current_line);
current_line = pnext;
es->line_count--;
}
}
else if (delta != 0)
{
while (current_line)
{
current_line->index += delta;
current_line = current_line->next;
}
}
/* Calculate rest of modification rectangle */
if (hrgn)
{
HRGN tmphrgn;
/*
* We calculate two rectangles. One for the first line which may have
* an indent with respect to the format rect. The other is a format-width
* rectangle that spans the rest of the lines that changed or moved.
*/
rc.top = es->format_rect.top + nstart_line * es->line_height -
(es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
rc.bottom = rc.top + es->line_height;
if ((es->style & ES_CENTER) || (es->style & ES_RIGHT))
rc.left = es->format_rect.left;
else
#ifdef __REACTOS__ /* CORE-11475 */
rc.left = (short)LOWORD(EDIT_EM_PosFromChar(es, nstart_index, FALSE));
#else
rc.left = LOWORD(EDIT_EM_PosFromChar(es, nstart_index, FALSE));
#endif
rc.right = es->format_rect.right;
SetRectRgn(hrgn, rc.left, rc.top, rc.right, rc.bottom);
rc.top = rc.bottom;
rc.left = es->format_rect.left;
rc.right = es->format_rect.right;
/*
* If lines were added or removed we must re-paint the remainder of the
* lines since the remaining lines were either shifted up or down.
*/
if (line_count < es->line_count) /* We added lines */
rc.bottom = es->line_count * es->line_height;
else if (line_count > es->line_count) /* We removed lines */
rc.bottom = line_count * es->line_height;
else
rc.bottom = line_index * es->line_height;
rc.bottom += es->format_rect.top;
rc.bottom -= (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
tmphrgn = CreateRectRgn(rc.left, rc.top, rc.right, rc.bottom);
CombineRgn(hrgn, hrgn, tmphrgn, RGN_OR);
DeleteObject(tmphrgn);
}
}
/*********************************************************************
*
* EDIT_CalcLineWidth_SL
*
*/
static void EDIT_CalcLineWidth_SL(EDITSTATE *es)
{
EDIT_UpdateUniscribeData(es, NULL, 0);
if (es->ssa)
{
const SIZE *size;
size = ScriptString_pSize(es->ssa);
es->text_width = size->cx;
}
else
es->text_width = 0;
}
/*********************************************************************
*
* EDIT_CharFromPos
*
* Beware: This is not the function called on EM_CHARFROMPOS
* The position _can_ be outside the formatting / client
* rectangle
* The return value is only the character index
*
*/
static INT EDIT_CharFromPos(EDITSTATE *es, INT x, INT y, LPBOOL after_wrap)
{
INT index;
if (es->style & ES_MULTILINE) {
int trailing;
INT line = (y - es->format_rect.top) / es->line_height + es->y_offset;
INT line_index = 0;
LINEDEF *line_def = es->first_line_def;
EDIT_UpdateUniscribeData(es, NULL, line);
while ((line > 0) && line_def->next) {
line_index += line_def->length;
line_def = line_def->next;
line--;
}
x += es->x_offset - es->format_rect.left;
if (es->style & ES_RIGHT)
x -= (es->format_rect.right - es->format_rect.left) - line_def->width;
else if (es->style & ES_CENTER)
x -= ((es->format_rect.right - es->format_rect.left) - line_def->width) / 2;
if (x >= line_def->width) {
if (after_wrap)
*after_wrap = (line_def->ending == END_WRAP);
return line_index + line_def->net_length;
}
if (x <= 0 || !line_def->ssa) {
if (after_wrap)
*after_wrap = FALSE;
return line_index;
}
ScriptStringXtoCP(line_def->ssa, x , &index, &trailing);
if (trailing) index++;
index += line_index;
if (after_wrap)
*after_wrap = ((index == line_index + line_def->net_length) &&
(line_def->ending == END_WRAP));
} else {
INT xoff = 0;
INT trailing;
if (after_wrap)
*after_wrap = FALSE;
x -= es->format_rect.left;
if (!x)
return es->x_offset;
if (!es->x_offset)
{
INT indent = (es->format_rect.right - es->format_rect.left) - es->text_width;
if (es->style & ES_RIGHT)
x -= indent;
else if (es->style & ES_CENTER)
x -= indent / 2;
}
EDIT_UpdateUniscribeData(es, NULL, 0);
if (es->x_offset)
{
if (es->ssa)
{
if (es->x_offset>= get_text_length(es))
{
const SIZE *size;
size = ScriptString_pSize(es->ssa);
xoff = size->cx;
}
ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
}
else
xoff = 0;
}
if (x < 0)
{
if (x + xoff > 0 || !es->ssa)
{
ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
if (trailing) index++;
}
else
index = 0;
}
else
{
if (x)
{
const SIZE *size = NULL;
if (es->ssa)
size = ScriptString_pSize(es->ssa);
if (!size)
index = 0;
else if (x > size->cx)
index = get_text_length(es);
else if (es->ssa)
{
ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
if (trailing) index++;
}
else
index = 0;
}
else
index = es->x_offset;
}
}
return index;
}
/*********************************************************************
*
* EDIT_ConfinePoint
*
* adjusts the point to be within the formatting rectangle
* (so CharFromPos returns the nearest _visible_ character)
*
*/
static void EDIT_ConfinePoint(const EDITSTATE *es, LPINT x, LPINT y)
{
*x = min(max(*x, es->format_rect.left), es->format_rect.right - 1);
*y = min(max(*y, es->format_rect.top), es->format_rect.bottom - 1);
}
/*********************************************************************
*
* EM_LINEFROMCHAR
*
*/
static INT EDIT_EM_LineFromChar(EDITSTATE *es, INT index)
{
INT line;
LINEDEF *line_def;
if (!(es->style & ES_MULTILINE))
return 0;
if (index > (INT)get_text_length(es))
return es->line_count - 1;
if (index == -1)
index = min(es->selection_start, es->selection_end);
line = 0;
line_def = es->first_line_def;
index -= line_def->length;
while ((index >= 0) && line_def->next) {
line++;
line_def = line_def->next;
index -= line_def->length;
}
return line;
}
/*********************************************************************
*
* EM_LINEINDEX
*
*/
static INT EDIT_EM_LineIndex(const EDITSTATE *es, INT line)
{
INT line_index;
const LINEDEF *line_def;
if (!(es->style & ES_MULTILINE))
return 0;
if (line >= es->line_count)
return -1;
line_index = 0;
line_def = es->first_line_def;
if (line == -1) {
INT index = es->selection_end - line_def->length;
while ((index >= 0) && line_def->next) {
line_index += line_def->length;
line_def = line_def->next;
index -= line_def->length;
}
} else {
while (line > 0) {
line_index += line_def->length;
line_def = line_def->next;
line--;
}
}
return line_index;
}
/*********************************************************************
*
* EM_LINELENGTH
*
*/
static INT EDIT_EM_LineLength(EDITSTATE *es, INT index)
{
LINEDEF *line_def;
if (!(es->style & ES_MULTILINE))
return get_text_length(es);
if (index == -1) {
/* get the number of remaining non-selected chars of selected lines */
INT32 l; /* line number */
INT32 li; /* index of first char in line */
INT32 count;
l = EDIT_EM_LineFromChar(es, es->selection_start);
/* # chars before start of selection area */
count = es->selection_start - EDIT_EM_LineIndex(es, l);
l = EDIT_EM_LineFromChar(es, es->selection_end);
/* # chars after end of selection */
li = EDIT_EM_LineIndex(es, l);
count += li + EDIT_EM_LineLength(es, li) - es->selection_end;
return count;
}
line_def = es->first_line_def;
index -= line_def->length;
while ((index >= 0) && line_def->next) {
line_def = line_def->next;
index -= line_def->length;
}
return line_def->net_length;
}
/*********************************************************************
*
* EM_POSFROMCHAR
*
*/
static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap)
{
INT len = get_text_length(es);
INT l;
INT li;
INT x = 0;
INT y = 0;
INT w;
INT lw;
LINEDEF *line_def;
index = min(index, len);
if (es->style & ES_MULTILINE) {
l = EDIT_EM_LineFromChar(es, index);
EDIT_UpdateUniscribeData(es, NULL, l);
y = (l - es->y_offset) * es->line_height;
li = EDIT_EM_LineIndex(es, l);
if (after_wrap && (li == index) && l) {
INT l2 = l - 1;
line_def = es->first_line_def;
while (l2) {
line_def = line_def->next;
l2--;
}
if (line_def->ending == END_WRAP) {
l--;
y -= es->line_height;
li = EDIT_EM_LineIndex(es, l);
}
}
line_def = es->first_line_def;
while (line_def->index != li)
line_def = line_def->next;
lw = line_def->width;
w = es->format_rect.right - es->format_rect.left;
if (line_def->ssa)
{
ScriptStringCPtoX(line_def->ssa, (index - 1) - li, TRUE, &x);
x -= es->x_offset;
}
else
#ifdef __REACTOS__ /* CORE-15780 */
x = (lw > 0 ? es->x_offset : x - es->x_offset);
#else
x = es->x_offset;
#endif
if (es->style & ES_RIGHT)
x = w - (lw - x);
else if (es->style & ES_CENTER)
x += (w - lw) / 2;
} else {
INT xoff = 0;
INT xi = 0;
EDIT_UpdateUniscribeData(es, NULL, 0);
if (es->x_offset)
{
if (es->ssa)
{
if (es->x_offset >= get_text_length(es))
{
int leftover = es->x_offset - get_text_length(es);
if (es->ssa)
{
const SIZE *size;
size = ScriptString_pSize(es->ssa);
xoff = size->cx;
}
else
xoff = 0;
xoff += es->char_width * leftover;
}
else
ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
}
else
xoff = 0;
}
if (index)
{
if (index >= get_text_length(es))
{
if (es->ssa)
{
const SIZE *size;
size = ScriptString_pSize(es->ssa);
xi = size->cx;
}
else
xi = 0;
}
else if (es->ssa)
ScriptStringCPtoX(es->ssa, index, FALSE, &xi);
else
xi = 0;
}
x = xi - xoff;
if (index >= es->x_offset) {
if (!es->x_offset && (es->style & (ES_RIGHT | ES_CENTER)))
{
w = es->format_rect.right - es->format_rect.left;
if (w > es->text_width)
{
if (es->style & ES_RIGHT)
x += w - es->text_width;
else if (es->style & ES_CENTER)
x += (w - es->text_width) / 2;
}
}
}
y = 0;
}
x += es->format_rect.left;
y += es->format_rect.top;
return MAKELONG((INT16)x, (INT16)y);
}
/*********************************************************************
*
* EDIT_GetLineRect
*
* Calculates the bounding rectangle for a line from a starting
* column to an ending column.
*
*/
static void EDIT_GetLineRect(EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc)
{
SCRIPT_STRING_ANALYSIS ssa;
INT line_index = 0;
INT pt1, pt2, pt3;
if (es->style & ES_MULTILINE)
{
const LINEDEF *line_def = NULL;
rc->top = es->format_rect.top + (line - es->y_offset) * es->line_height;
if (line >= es->line_count)
return;
line_def = es->first_line_def;
if (line == -1) {
INT index = es->selection_end - line_def->length;
while ((index >= 0) && line_def->next) {
line_index += line_def->length;
line_def = line_def->next;
index -= line_def->length;
}
} else {
while (line > 0) {
line_index += line_def->length;
line_def = line_def->next;
line--;
}
}
ssa = line_def->ssa;
}
else
{
line_index = 0;
rc->top = es->format_rect.top;
ssa = es->ssa;
}
rc->bottom = rc->top + es->line_height;
pt1 = (scol == 0) ? es->format_rect.left : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + scol, TRUE));
pt2 = (ecol == -1) ? es->format_rect.right : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + ecol, TRUE));
if (ssa)
{
ScriptStringCPtoX(ssa, scol, FALSE, &pt3);
pt3+=es->format_rect.left;
}
else pt3 = pt1;
rc->right = max(max(pt1 , pt2),pt3);
rc->left = min(min(pt1, pt2),pt3);
}
static inline void text_buffer_changed(EDITSTATE *es)
{
es->text_length = (UINT)-1;
heap_free( es->logAttr );
es->logAttr = NULL;
EDIT_InvalidateUniscribeData(es);
}
/*********************************************************************
* EDIT_LockBuffer
*
*/
static void EDIT_LockBuffer(EDITSTATE *es)
{
if (!es->text)
{
if (!es->hloc32W)
return;
es->text = LocalLock(es->hloc32W);
}
es->lock_count++;
}
/*********************************************************************
*
* EDIT_UnlockBuffer
*
*/
static void EDIT_UnlockBuffer(EDITSTATE *es, BOOL force)
{
/* Edit window might be already destroyed */
if (!IsWindow(es->hwndSelf))
{
WARN("edit hwnd %p already destroyed\n", es->hwndSelf);
return;
}
if (!es->lock_count)
{
ERR("lock_count == 0 ... please report\n");
return;
}
if (!es->text)
{
ERR("es->text == 0 ... please report\n");
return;
}
if (force || (es->lock_count == 1))
{
if (es->hloc32W)
{
LocalUnlock(es->hloc32W);
es->text = NULL;
}
else
{
ERR("no buffer ... please report\n");
return;
}
}
es->lock_count--;
}
/*********************************************************************
*
* EDIT_MakeFit
*
* Try to fit size + 1 characters in the buffer.
*/
static BOOL EDIT_MakeFit(EDITSTATE *es, UINT size)
{
HLOCAL hNew32W;
if (size <= es->buffer_size)
return TRUE;
TRACE("trying to ReAlloc to %d+1 characters\n", size);
/* Force edit to unlock its buffer. es->text now NULL */
EDIT_UnlockBuffer(es, TRUE);
if (es->hloc32W) {
UINT alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
if ((hNew32W = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT))) {
TRACE("Old 32 bit handle %p, new handle %p\n", es->hloc32W, hNew32W);
es->hloc32W = hNew32W;
es->buffer_size = LocalSize(hNew32W)/sizeof(WCHAR) - 1;
}
}
EDIT_LockBuffer(es);
if (es->buffer_size < size) {
WARN("FAILED ! We now have %d+1\n", es->buffer_size);
EDIT_NOTIFY_PARENT(es, EN_ERRSPACE);
return FALSE;
} else {
TRACE("We now have %d+1\n", es->buffer_size);
return TRUE;
}
}
/*********************************************************************
*
* EDIT_MakeUndoFit
*
* Try to fit size + 1 bytes in the undo buffer.
*
*/
static BOOL EDIT_MakeUndoFit(EDITSTATE *es, UINT size)
{
UINT alloc_size;
if (size <= es->undo_buffer_size)
return TRUE;
TRACE("trying to ReAlloc to %d+1\n", size);
alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
if ((es->undo_text = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, es->undo_text, alloc_size))) {
es->undo_buffer_size = alloc_size/sizeof(WCHAR) - 1;
return TRUE;
}
else
{
WARN("FAILED ! We now have %d+1\n", es->undo_buffer_size);
return FALSE;
}
}
/*********************************************************************
*
* EDIT_UpdateTextRegion
*
*/
static void EDIT_UpdateTextRegion(EDITSTATE *es, HRGN hrgn, BOOL bErase)
{
if (es->flags & EF_UPDATE) {
es->flags &= ~EF_UPDATE;
EDIT_NOTIFY_PARENT(es, EN_UPDATE);
}
InvalidateRgn(es->hwndSelf, hrgn, bErase);
}
/*********************************************************************
*
* EDIT_UpdateText
*
*/
static void EDIT_UpdateText(EDITSTATE *es, const RECT *rc, BOOL bErase)
{
if (es->flags & EF_UPDATE) {
es->flags &= ~EF_UPDATE;
EDIT_NOTIFY_PARENT(es, EN_UPDATE);
}
InvalidateRect(es->hwndSelf, rc, bErase);
}
/*********************************************************************
*
* EDIT_SL_InvalidateText
*
* Called from EDIT_InvalidateText().
* Does the job for single-line controls only.
*
*/
static void EDIT_SL_InvalidateText(EDITSTATE *es, INT start, INT end)
{
RECT line_rect;
RECT rc;
EDIT_GetLineRect(es, 0, start, end, &line_rect);
if (IntersectRect(&rc, &line_rect, &es->format_rect))
EDIT_UpdateText(es, &rc, TRUE);
}
/*********************************************************************
*
* EDIT_ML_InvalidateText
*
* Called from EDIT_InvalidateText().
* Does the job for multi-line controls only.
*
*/
static void EDIT_ML_InvalidateText(EDITSTATE *es, INT start, INT end)
{
INT vlc = get_vertical_line_count(es);
INT sl = EDIT_EM_LineFromChar(es, start);
INT el = EDIT_EM_LineFromChar(es, end);
INT sc;
INT ec;
RECT rc1;
RECT rcWnd;
RECT rcLine;
RECT rcUpdate;
INT l;
if ((el < es->y_offset) || (sl > es->y_offset + vlc))
return;
sc = start - EDIT_EM_LineIndex(es, sl);
ec = end - EDIT_EM_LineIndex(es, el);
if (sl < es->y_offset) {
sl = es->y_offset;
sc = 0;
}
if (el > es->y_offset + vlc) {
el = es->y_offset + vlc;
ec = EDIT_EM_LineLength(es, EDIT_EM_LineIndex(es, el));
}
GetClientRect(es->hwndSelf, &rc1);
IntersectRect(&rcWnd, &rc1, &es->format_rect);
if (sl == el) {
EDIT_GetLineRect(es, sl, sc, ec, &rcLine);
if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
EDIT_UpdateText(es, &rcUpdate, TRUE);
} else {
EDIT_GetLineRect(es, sl, sc,
EDIT_EM_LineLength(es,
EDIT_EM_LineIndex(es, sl)),
&rcLine);
if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
EDIT_UpdateText(es, &rcUpdate, TRUE);
for (l = sl + 1 ; l < el ; l++) {
EDIT_GetLineRect(es, l, 0,
EDIT_EM_LineLength(es,
EDIT_EM_LineIndex(es, l)),
&rcLine);
if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
EDIT_UpdateText(es, &rcUpdate, TRUE);
}
EDIT_GetLineRect(es, el, 0, ec, &rcLine);
if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
EDIT_UpdateText(es, &rcUpdate, TRUE);
}
}
/*********************************************************************
*
* EDIT_InvalidateText
*
* Invalidate the text from offset start up to, but not including,
* offset end. Useful for (re)painting the selection.
* Regions outside the linewidth are not invalidated.
* end == -1 means end == TextLength.
* start and end need not be ordered.
*
*/
static void EDIT_InvalidateText(EDITSTATE *es, INT start, INT end)
{
if (end == start)
return;
if (end == -1)
end = get_text_length(es);
if (end < start) {
INT tmp = start;
start = end;
end = tmp;
}
if (es->style & ES_MULTILINE)
EDIT_ML_InvalidateText(es, start, end);
else
EDIT_SL_InvalidateText(es, start, end);
}
/*********************************************************************
*
* EDIT_EM_SetSel
*
* note: unlike the specs say: the order of start and end
* _is_ preserved in Windows. (i.e. start can be > end)
* In other words: this handler is OK
*
*/
static BOOL EDIT_EM_SetSel(EDITSTATE *es, UINT start, UINT end, BOOL after_wrap)
{
UINT old_start = es->selection_start;
UINT old_end = es->selection_end;
UINT len = get_text_length(es);
if (start == old_start && end == old_end)
return FALSE;
if (start == (UINT)-1) {
start = es->selection_end;
end = es->selection_end;
} else {
start = min(start, len);
end = min(end, len);
}
es->selection_start = start;
es->selection_end = end;
if (after_wrap)
es->flags |= EF_AFTER_WRAP;
else
es->flags &= ~EF_AFTER_WRAP;
/* Compute the necessary invalidation region. */
/* Note that we don't need to invalidate regions which have
* "never" been selected, or those which are "still" selected.
* In fact, every time we hit a selection boundary, we can
* *toggle* whether we need to invalidate. Thus we can optimize by
* *sorting* the interval endpoints. Let's assume that we sort them
* in this order:
* start <= end <= old_start <= old_end
* Knuth 5.3.1 (p 183) assures us that this can be done optimally
* in 5 comparisons; i.e. it is impossible to do better than the
* following: */
ORDER_UINT(end, old_end);
ORDER_UINT(start, old_start);
ORDER_UINT(old_start, old_end);
ORDER_UINT(start, end);
/* Note that at this point 'end' and 'old_start' are not in order, but
* start is definitely the min. and old_end is definitely the max. */
if (end != old_start)
{
/*
* One can also do
* ORDER_UINT32(end, old_start);
* EDIT_InvalidateText(es, start, end);
* EDIT_InvalidateText(es, old_start, old_end);
* in place of the following if statement.
* (That would complete the optimal five-comparison four-element sort.)
*/
if (old_start > end )
{
EDIT_InvalidateText(es, start, end);
EDIT_InvalidateText(es, old_start, old_end);
}
else
{
EDIT_InvalidateText(es, start, old_start);
EDIT_InvalidateText(es, end, old_end);
}
}
else EDIT_InvalidateText(es, start, old_end);
return TRUE;
}
/*********************************************************************
*
* EDIT_UpdateScrollInfo
*
*/
static void EDIT_UpdateScrollInfo(EDITSTATE *es)
{
if ((es->style & WS_VSCROLL) && !(es->flags & EF_VSCROLL_TRACK))
{
SCROLLINFO si;
si.cbSize = sizeof(SCROLLINFO);
si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
si.nMin = 0;
si.nMax = es->line_count - 1;
si.nPage = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
si.nPos = es->y_offset;
TRACE("SB_VERT, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
si.nMin, si.nMax, si.nPage, si.nPos);
SetScrollInfo(es->hwndSelf, SB_VERT, &si, TRUE);
}
if ((es->style & WS_HSCROLL) && !(es->flags & EF_HSCROLL_TRACK))
{
SCROLLINFO si;
si.cbSize = sizeof(SCROLLINFO);
si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
si.nMin = 0;
si.nMax = es->text_width - 1;
si.nPage = es->format_rect.right - es->format_rect.left;
si.nPos = es->x_offset;
TRACE("SB_HORZ, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
si.nMin, si.nMax, si.nPage, si.nPos);
SetScrollInfo(es->hwndSelf, SB_HORZ, &si, TRUE);
}
}
/*********************************************************************
*
* EDIT_EM_LineScroll_internal
*
* Version of EDIT_EM_LineScroll for internal use.
* It doesn't refuse if ES_MULTILINE is set and assumes that
* dx is in pixels, dy - in lines.
*
*/
static BOOL EDIT_EM_LineScroll_internal(EDITSTATE *es, INT dx, INT dy)
{
INT nyoff;
INT x_offset_in_pixels;
INT lines_per_page = (es->format_rect.bottom - es->format_rect.top) /
es->line_height;
if (es->style & ES_MULTILINE)
{
x_offset_in_pixels = es->x_offset;
}
else
{
dy = 0;
x_offset_in_pixels = (short)LOWORD(EDIT_EM_PosFromChar(es, es->x_offset, FALSE));
}
if (-dx > x_offset_in_pixels)
dx = -x_offset_in_pixels;
if (dx > es->text_width - x_offset_in_pixels)
dx = es->text_width - x_offset_in_pixels;
nyoff = max(0, es->y_offset + dy);
if (nyoff >= es->line_count - lines_per_page)
nyoff = max(0, es->line_count - lines_per_page);
dy = (es->y_offset - nyoff) * es->line_height;
if (dx || dy) {
RECT rc1;
RECT rc;
es->y_offset = nyoff;
if(es->style & ES_MULTILINE)
es->x_offset += dx;
else
es->x_offset += dx / es->char_width;
GetClientRect(es->hwndSelf, &rc1);
IntersectRect(&rc, &rc1, &es->format_rect);
ScrollWindowEx(es->hwndSelf, -dx, dy,
NULL, &rc, NULL, NULL, SW_INVALIDATE);
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
}
if (dx && !(es->flags & EF_HSCROLL_TRACK))
EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
if (dy && !(es->flags & EF_VSCROLL_TRACK))
EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
return TRUE;
}
/*********************************************************************
*
* EM_LINESCROLL
*
* NOTE: dx is in average character widths, dy - in lines;
*
*/
static BOOL EDIT_EM_LineScroll(EDITSTATE *es, INT dx, INT dy)
{
if (!(es->style & ES_MULTILINE))
return FALSE;
dx *= es->char_width;
return EDIT_EM_LineScroll_internal(es, dx, dy);
}
/*********************************************************************
*
* EM_SCROLL
*
*/
static LRESULT EDIT_EM_Scroll(EDITSTATE *es, INT action)
{
INT dy;
if (!(es->style & ES_MULTILINE))
return (LRESULT)FALSE;
dy = 0;
switch (action) {
case SB_LINEUP:
if (es->y_offset)
dy = -1;
break;
case SB_LINEDOWN:
if (es->y_offset < es->line_count - 1)
dy = 1;
break;
case SB_PAGEUP:
if (es->y_offset)
dy = -(es->format_rect.bottom - es->format_rect.top) / es->line_height;
break;
case SB_PAGEDOWN:
if (es->y_offset < es->line_count - 1)
dy = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
break;
default:
return (LRESULT)FALSE;
}
if (dy) {
INT vlc = get_vertical_line_count(es);
/* check if we are going to move too far */
if(es->y_offset + dy > es->line_count - vlc)
dy = max(es->line_count - vlc, 0) - es->y_offset;
/* Notification is done in EDIT_EM_LineScroll */
if(dy) {
EDIT_EM_LineScroll(es, 0, dy);
return MAKELONG(dy, TRUE);
}
}
return (LRESULT)FALSE;
}
/*********************************************************************
*
* EDIT_SetCaretPos
*
*/
static void EDIT_SetCaretPos(EDITSTATE *es, INT pos,
BOOL after_wrap)
{
LRESULT res = EDIT_EM_PosFromChar(es, pos, after_wrap);
TRACE("%d - %dx%d\n", pos, (short)LOWORD(res), (short)HIWORD(res));
SetCaretPos((short)LOWORD(res), (short)HIWORD(res));
}
/*********************************************************************
*
* EM_SCROLLCARET
*
*/
static void EDIT_EM_ScrollCaret(EDITSTATE *es)
{
if (es->style & ES_MULTILINE) {
INT l;
INT vlc;
INT ww;
INT cw = es->char_width;
INT x;
INT dy = 0;
INT dx = 0;
l = EDIT_EM_LineFromChar(es, es->selection_end);
x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP));
vlc = get_vertical_line_count(es);
if (l >= es->y_offset + vlc)
dy = l - vlc + 1 - es->y_offset;
if (l < es->y_offset)
dy = l - es->y_offset;
ww = es->format_rect.right - es->format_rect.left;
if (x < es->format_rect.left)
dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
if (x > es->format_rect.right)
dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
if (dy || dx || (es->y_offset && (es->line_count - es->y_offset < vlc)))
{
/* check if we are going to move too far */
if(es->x_offset + dx + ww > es->text_width)
dx = es->text_width - ww - es->x_offset;
if(dx || dy || (es->y_offset && (es->line_count - es->y_offset < vlc)))
EDIT_EM_LineScroll_internal(es, dx, dy);
}
} else {
INT x;
INT goal;
INT format_width;
x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
format_width = es->format_rect.right - es->format_rect.left;
if (x < es->format_rect.left) {
goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
do {
es->x_offset--;
x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
} while ((x < goal) && es->x_offset);
/* FIXME: use ScrollWindow() somehow to improve performance */
EDIT_UpdateText(es, NULL, TRUE);
} else if (x > es->format_rect.right) {
INT x_last;
INT len = get_text_length(es);
goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
do {
es->x_offset++;
x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
x_last = (short)LOWORD(EDIT_EM_PosFromChar(es, len, FALSE));
} while ((x > goal) && (x_last > es->format_rect.right));
/* FIXME: use ScrollWindow() somehow to improve performance */
EDIT_UpdateText(es, NULL, TRUE);
}
}
if(es->flags & EF_FOCUSED)
EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
}
/*********************************************************************
*
* EDIT_MoveBackward
*
*/
static void EDIT_MoveBackward(EDITSTATE *es, BOOL extend)
{
INT e = es->selection_end;
if (e) {
e--;
if ((es->style & ES_MULTILINE) && e &&
(es->text[e - 1] == '\r') && (es->text[e] == '\n')) {
e--;
if (e && (es->text[e - 1] == '\r'))
e--;
}
}
EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveDown_ML
*
* Only for multi line controls
* Move the caret one line down, on a column with the nearest
* x coordinate on the screen (might be a different column).
*
*/
static void EDIT_MoveDown_ML(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
INT x = (short)LOWORD(pos);
INT y = (short)HIWORD(pos);
e = EDIT_CharFromPos(es, x, y + es->line_height, &after_wrap);
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, after_wrap);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveEnd
*
*/
static void EDIT_MoveEnd(EDITSTATE *es, BOOL extend, BOOL ctrl)
{
BOOL after_wrap = FALSE;
INT e;
/* Pass a high value in x to make sure of receiving the end of the line */
if (!ctrl && (es->style & ES_MULTILINE))
e = EDIT_CharFromPos(es, 0x3fffffff,
HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), &after_wrap);
else
e = get_text_length(es);
EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, after_wrap);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveForward
*
*/
static void EDIT_MoveForward(EDITSTATE *es, BOOL extend)
{
INT e = es->selection_end;
if (es->text[e]) {
e++;
if ((es->style & ES_MULTILINE) && (es->text[e - 1] == '\r')) {
if (es->text[e] == '\n')
e++;
else if ((es->text[e] == '\r') && (es->text[e + 1] == '\n'))
e += 2;
}
}
EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveHome
*
* Home key: move to beginning of line.
*
*/
static void EDIT_MoveHome(EDITSTATE *es, BOOL extend, BOOL ctrl)
{
INT e;
/* Pass the x_offset in x to make sure of receiving the first position of the line */
if (!ctrl && (es->style & ES_MULTILINE))
e = EDIT_CharFromPos(es, -es->x_offset,
HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), NULL);
else
e = 0;
EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MovePageDown_ML
*
* Only for multi line controls
* Move the caret one page down, on a column with the nearest
* x coordinate on the screen (might be a different column).
*
*/
static void EDIT_MovePageDown_ML(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
INT x = (short)LOWORD(pos);
INT y = (short)HIWORD(pos);
e = EDIT_CharFromPos(es, x,
y + (es->format_rect.bottom - es->format_rect.top),
&after_wrap);
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, after_wrap);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MovePageUp_ML
*
* Only for multi line controls
* Move the caret one page up, on a column with the nearest
* x coordinate on the screen (might be a different column).
*
*/
static void EDIT_MovePageUp_ML(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
INT x = (short)LOWORD(pos);
INT y = (short)HIWORD(pos);
e = EDIT_CharFromPos(es, x,
y - (es->format_rect.bottom - es->format_rect.top),
&after_wrap);
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, after_wrap);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveUp_ML
*
* Only for multi line controls
* Move the caret one line up, on a column with the nearest
* x coordinate on the screen (might be a different column).
*
*/
static void EDIT_MoveUp_ML(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
INT x = (short)LOWORD(pos);
INT y = (short)HIWORD(pos);
e = EDIT_CharFromPos(es, x, y - es->line_height, &after_wrap);
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, after_wrap);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveWordBackward
*
*/
static void EDIT_MoveWordBackward(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
INT l;
INT ll;
INT li;
l = EDIT_EM_LineFromChar(es, e);
ll = EDIT_EM_LineLength(es, e);
li = EDIT_EM_LineIndex(es, l);
if (e - li == 0) {
if (l) {
li = EDIT_EM_LineIndex(es, l - 1);
e = li + EDIT_EM_LineLength(es, li);
}
} else {
e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
}
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, FALSE);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveWordForward
*
*/
static void EDIT_MoveWordForward(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
INT l;
INT ll;
INT li;
l = EDIT_EM_LineFromChar(es, e);
ll = EDIT_EM_LineLength(es, e);
li = EDIT_EM_LineIndex(es, l);
if (e - li == ll) {
if ((es->style & ES_MULTILINE) && (l != es->line_count - 1))
e = EDIT_EM_LineIndex(es, l + 1);
} else {
e = li + EDIT_CallWordBreakProc(es,
li, e - li + 1, ll, WB_RIGHT);
}
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, FALSE);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_PaintText
*
*/
static INT EDIT_PaintText(EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
{
COLORREF BkColor;
COLORREF TextColor;
LOGFONTW underline_font;
HFONT hUnderline = 0;
HFONT old_font = 0;
INT ret;
INT li;
INT BkMode;
SIZE size;
if (!count)
return 0;
BkMode = GetBkMode(dc);
BkColor = GetBkColor(dc);
TextColor = GetTextColor(dc);
if (rev) {
if (es->composition_len == 0)
{
SetBkColor(dc, GetSysColor(COLOR_HIGHLIGHT));
SetTextColor(dc, GetSysColor(COLOR_HIGHLIGHTTEXT));
SetBkMode( dc, OPAQUE);
}
else
{
HFONT current = GetCurrentObject(dc,OBJ_FONT);
GetObjectW(current,sizeof(LOGFONTW),&underline_font);
underline_font.lfUnderline = TRUE;
hUnderline = CreateFontIndirectW(&underline_font);
old_font = SelectObject(dc,hUnderline);
}
}
li = EDIT_EM_LineIndex(es, line);
if (es->style & ES_MULTILINE) {
ret = (INT)LOWORD(TabbedTextOutW(dc, x, y, es->text + li + col, count,
es->tabs_count, es->tabs, es->format_rect.left - es->x_offset));
} else {
TextOutW(dc, x, y, es->text + li + col, count);
GetTextExtentPoint32W(dc, es->text + li + col, count, &size);
ret = size.cx;
}
if (rev) {
if (es->composition_len == 0)
{
SetBkColor(dc, BkColor);
SetTextColor(dc, TextColor);
SetBkMode( dc, BkMode);
}
else
{
if (old_font)
SelectObject(dc,old_font);
if (hUnderline)
DeleteObject(hUnderline);
}
}
return ret;
}
/*********************************************************************
*
* EDIT_PaintLine
*
*/
static void EDIT_PaintLine(EDITSTATE *es, HDC dc, INT line, BOOL rev)
{
INT s = 0;
INT e = 0;
INT li = 0;
INT ll = 0;
INT x;
INT y;
LRESULT pos;
SCRIPT_STRING_ANALYSIS ssa;
if (es->style & ES_MULTILINE) {
INT vlc = get_vertical_line_count(es);
if ((line < es->y_offset) || (line > es->y_offset + vlc) || (line >= es->line_count))
return;
} else if (line)
return;
TRACE("line=%d\n", line);
ssa = EDIT_UpdateUniscribeData(es, dc, line);
pos = EDIT_EM_PosFromChar(es, EDIT_EM_LineIndex(es, line), FALSE);
x = (short)LOWORD(pos);
y = (short)HIWORD(pos);
if (es->style & ES_MULTILINE)
{
int line_idx = line;
x = -es->x_offset;
if (es->style & ES_RIGHT || es->style & ES_CENTER)
{
LINEDEF *line_def = es->first_line_def;
int w, lw;
while (line_def && line_idx)
{
line_def = line_def->next;
line_idx--;
}
w = es->format_rect.right - es->format_rect.left;
lw = line_def->width;
if (es->style & ES_RIGHT)
x = w - (lw - x);
else if (es->style & ES_CENTER)
x += (w - lw) / 2;
}
x += es->format_rect.left;
}
if (rev)
{
li = EDIT_EM_LineIndex(es, line);
ll = EDIT_EM_LineLength(es, li);
s = min(es->selection_start, es->selection_end);
e = max(es->selection_start, es->selection_end);
s = min(li + ll, max(li, s));
e = min(li + ll, max(li, e));
}
if (ssa)
ScriptStringOut(ssa, x, y, 0, &es->format_rect, s - li, e - li, FALSE);
else if (rev && (s != e) &&
((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL))) {
x += EDIT_PaintText(es, dc, x, y, line, 0, s - li, FALSE);
x += EDIT_PaintText(es, dc, x, y, line, s - li, e - s, TRUE);
x += EDIT_PaintText(es, dc, x, y, line, e - li, li + ll - e, FALSE);
} else
x += EDIT_PaintText(es, dc, x, y, line, 0, ll, FALSE);
}
/*********************************************************************
*
* EDIT_AdjustFormatRect
*
* Adjusts the format rectangle for the current font and the
* current client rectangle.
*
*/
static void EDIT_AdjustFormatRect(EDITSTATE *es)
{
RECT ClientRect;
es->format_rect.right = max(es->format_rect.right, es->format_rect.left + es->char_width);
if (es->style & ES_MULTILINE)
{
INT fw, vlc, max_x_offset, max_y_offset;
vlc = get_vertical_line_count(es);
es->format_rect.bottom = es->format_rect.top + vlc * es->line_height;
/* correct es->x_offset */
fw = es->format_rect.right - es->format_rect.left;
max_x_offset = es->text_width - fw;
if(max_x_offset < 0) max_x_offset = 0;
if(es->x_offset > max_x_offset)
es->x_offset = max_x_offset;
/* correct es->y_offset */
max_y_offset = es->line_count - vlc;
if(max_y_offset < 0) max_y_offset = 0;
if(es->y_offset > max_y_offset)
es->y_offset = max_y_offset;
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
}
else
/* Windows doesn't care to fix text placement for SL controls */
es->format_rect.bottom = es->format_rect.top + es->line_height;
/* Always stay within the client area */
GetClientRect(es->hwndSelf, &ClientRect);
es->format_rect.bottom = min(es->format_rect.bottom, ClientRect.bottom);
if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
}
/*********************************************************************
*
* EDIT_SetRectNP
*
* note: this is not (exactly) the handler called on EM_SETRECTNP
* it is also used to set the rect of a single line control
*
*/
static void EDIT_SetRectNP(EDITSTATE *es, const RECT *rc)
{
LONG_PTR ExStyle;
INT bw, bh;
ExStyle = GetWindowLongPtrW(es->hwndSelf, GWL_EXSTYLE);
CopyRect(&es->format_rect, rc);
if (ExStyle & WS_EX_CLIENTEDGE) {
es->format_rect.left++;
es->format_rect.right--;
if (es->format_rect.bottom - es->format_rect.top
>= es->line_height + 2)
{
es->format_rect.top++;
es->format_rect.bottom--;
}
}
else if (es->style & WS_BORDER) {
bw = GetSystemMetrics(SM_CXBORDER) + 1;
bh = GetSystemMetrics(SM_CYBORDER) + 1;
InflateRect(&es->format_rect, -bw, 0);
if (es->format_rect.bottom - es->format_rect.top >= es->line_height + 2 * bh)
InflateRect(&es->format_rect, 0, -bh);
}
es->format_rect.left += es->left_margin;
es->format_rect.right -= es->right_margin;
EDIT_AdjustFormatRect(es);
}
/*********************************************************************
*
* EM_CHARFROMPOS
*
* returns line number (not index) in high-order word of result.
* NB : Q137805 is unclear about this. POINT * pointer in lParam apply
* to Richedit, not to the edit control. Original documentation is valid.
* FIXME: do the specs mean to return -1 if outside client area or
* if outside formatting rectangle ???
*
*/
static LRESULT EDIT_EM_CharFromPos(EDITSTATE *es, INT x, INT y)
{
POINT pt;
RECT rc;
INT index;
pt.x = x;
pt.y = y;
GetClientRect(es->hwndSelf, &rc);
if (!PtInRect(&rc, pt))
return -1;
index = EDIT_CharFromPos(es, x, y, NULL);
return MAKELONG(index, EDIT_EM_LineFromChar(es, index));
}
/*********************************************************************
*
* EM_FMTLINES
*
* Enable or disable soft breaks.
*
* This means: insert or remove the soft linebreak character (\r\r\n).
* Take care to check if the text still fits the buffer after insertion.
* If not, notify with EN_ERRSPACE.
*
*/
static BOOL EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol)
{
es->flags &= ~EF_USE_SOFTBRK;
if (add_eol) {
es->flags |= EF_USE_SOFTBRK;
FIXME("soft break enabled, not implemented\n");
}
return add_eol;
}
/*********************************************************************
*
* EM_GETHANDLE
*
* Hopefully this won't fire back at us.
* We always start with a fixed buffer in the local heap.
* Despite of the documentation says that the local heap is used
* only if DS_LOCALEDIT flag is set, NT and 2000 always allocate
* buffer on the local heap.
*
*/
static HLOCAL EDIT_EM_GetHandle(EDITSTATE *es)
{
if (!(es->style & ES_MULTILINE))
return 0;
EDIT_UnlockBuffer(es, TRUE);
/* The text buffer handle belongs to the app */
es->hlocapp = es->hloc32W;
TRACE("Returning %p, LocalSize() = %ld\n", es->hlocapp, LocalSize(es->hlocapp));
return es->hlocapp;
}
/*********************************************************************
*
* EM_GETLINE
*
*/
static INT EDIT_EM_GetLine(EDITSTATE *es, INT line, LPWSTR dst)
{
INT line_len, dst_len;
LPWSTR src;
INT i;
if (es->style & ES_MULTILINE)
{
if (line >= es->line_count)
return 0;
}
else
line = 0;
i = EDIT_EM_LineIndex(es, line);
src = es->text + i;
line_len = EDIT_EM_LineLength(es, i);
dst_len = *(WORD *)dst;
if (dst_len <= line_len)
{
memcpy(dst, src, dst_len * sizeof(WCHAR));
return dst_len;
}
else /* Append 0 if enough space */
{
memcpy(dst, src, line_len * sizeof(WCHAR));
dst[line_len] = 0;
return line_len;
}
}
/*********************************************************************
*
* EM_GETSEL
*
*/
static LRESULT EDIT_EM_GetSel(const EDITSTATE *es, PUINT start, PUINT end)
{
UINT s = es->selection_start;
UINT e = es->selection_end;
ORDER_UINT(s, e);
if (start)
*start = s;
if (end)
*end = e;
return MAKELONG(s, e);
}
/*********************************************************************
*
* EM_REPLACESEL
*
* FIXME: handle ES_NUMBER and ES_OEMCONVERT here
*
*/
static void EDIT_EM_ReplaceSel(EDITSTATE *es, BOOL can_undo, const WCHAR *lpsz_replace, UINT strl,
BOOL send_update, BOOL honor_limit)
{
UINT tl = get_text_length(es);
UINT utl;
UINT s;
UINT e;
UINT i;
UINT size;
LPWSTR p;
HRGN hrgn = 0;
LPWSTR buf = NULL;
UINT bufl;
TRACE("%s, can_undo %d, send_update %d\n",
debugstr_wn(lpsz_replace, strl), can_undo, send_update);
s = es->selection_start;
e = es->selection_end;
EDIT_InvalidateUniscribeData(es);
if ((s == e) && !strl)
return;
ORDER_UINT(s, e);
size = tl - (e - s) + strl;
if (!size)
es->text_width = 0;
/* Issue the EN_MAXTEXT notification and continue with replacing text
* so that buffer limit is honored. */
if ((honor_limit) && (size > es->buffer_limit)) {
EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
/* Buffer limit can be smaller than the actual length of text in combobox */
if (es->buffer_limit < (tl - (e-s)))
strl = 0;
else
strl = min(strl, es->buffer_limit - (tl - (e-s)));
}
if (!EDIT_MakeFit(es, tl - (e - s) + strl))
return;
if (e != s) {
/* there is something to be deleted */
TRACE("deleting stuff.\n");
bufl = e - s;
buf = heap_alloc((bufl + 1) * sizeof(WCHAR));
if (!buf) return;
memcpy(buf, es->text + s, bufl * sizeof(WCHAR));
buf[bufl] = 0; /* ensure 0 termination */
/* now delete */
strcpyW(es->text + s, es->text + e);
text_buffer_changed(es);
}
if (strl) {
/* there is an insertion */
tl = get_text_length(es);
TRACE("inserting stuff (tl %d, strl %d, selstart %d (%s), text %s)\n", tl, strl, s, debugstr_w(es->text + s), debugstr_w(es->text));
for (p = es->text + tl ; p >= es->text + s ; p--)
p[strl] = p[0];
for (i = 0 , p = es->text + s ; i < strl ; i++)
p[i] = lpsz_replace[i];
if(es->style & ES_UPPERCASE)
CharUpperBuffW(p, strl);
else if(es->style & ES_LOWERCASE)
CharLowerBuffW(p, strl);
text_buffer_changed(es);
}
if (es->style & ES_MULTILINE)
{
INT st = min(es->selection_start, es->selection_end);
INT vlc = get_vertical_line_count(es);
hrgn = CreateRectRgn(0, 0, 0, 0);
EDIT_BuildLineDefs_ML(es, st, st + strl,
strl - abs(es->selection_end - es->selection_start), hrgn);
/* if text is too long undo all changes */
if (honor_limit && !(es->style & ES_AUTOVSCROLL) && (es->line_count > vlc)) {
if (strl)
strcpyW(es->text + e, es->text + e + strl);
if (e != s)
for (i = 0 , p = es->text ; i < e - s ; i++)
p[i + s] = buf[i];
text_buffer_changed(es);
EDIT_BuildLineDefs_ML(es, s, e,
abs(es->selection_end - es->selection_start) - strl, hrgn);
strl = 0;
e = s;
hrgn = CreateRectRgn(0, 0, 0, 0);
EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
}
}
else {
INT fw = es->format_rect.right - es->format_rect.left;
EDIT_InvalidateUniscribeData(es);
EDIT_CalcLineWidth_SL(es);
/* remove chars that don't fit */
if (honor_limit && !(es->style & ES_AUTOHSCROLL) && (es->text_width > fw)) {
while ((es->text_width > fw) && s + strl >= s) {
strcpyW(es->text + s + strl - 1, es->text + s + strl);
strl--;
es->text_length = -1;
EDIT_InvalidateUniscribeData(es);
EDIT_CalcLineWidth_SL(es);
}
text_buffer_changed(es);
EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
}
}
if (e != s) {
if (can_undo) {
utl = strlenW(es->undo_text);
if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
/* undo-buffer is extended to the right */
EDIT_MakeUndoFit(es, utl + e - s);
memcpy(es->undo_text + utl, buf, (e - s)*sizeof(WCHAR));
(es->undo_text + utl)[e - s] = 0; /* ensure 0 termination */
} else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
/* undo-buffer is extended to the left */
EDIT_MakeUndoFit(es, utl + e - s);
for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
p[e - s] = p[0];
for (i = 0 , p = es->undo_text ; i < e - s ; i++)
p[i] = buf[i];
es->undo_position = s;
} else {
/* new undo-buffer */
EDIT_MakeUndoFit(es, e - s);
memcpy(es->undo_text, buf, (e - s)*sizeof(WCHAR));
es->undo_text[e - s] = 0; /* ensure 0 termination */
es->undo_position = s;
}
/* any deletion makes the old insertion-undo invalid */
es->undo_insert_count = 0;
} else
EDIT_EM_EmptyUndoBuffer(es);
}
if (strl) {
if (can_undo) {
if ((s == es->undo_position) ||
((es->undo_insert_count) &&
(s == es->undo_position + es->undo_insert_count)))
/*
* insertion is new and at delete position or
* an extension to either left or right
*/
es->undo_insert_count += strl;
else {
/* new insertion undo */
es->undo_position = s;
es->undo_insert_count = strl;
/* new insertion makes old delete-buffer invalid */
*es->undo_text = '\0';
}
} else
EDIT_EM_EmptyUndoBuffer(es);
}
heap_free(buf);
s += strl;
/* If text has been deleted and we're right or center aligned then scroll rightward */
if (es->style & (ES_RIGHT | ES_CENTER))
{
INT delta = strl - abs(es->selection_end - es->selection_start);
if (delta < 0 && es->x_offset)
{
if (abs(delta) > es->x_offset)
es->x_offset = 0;
else
es->x_offset += delta;
}
}
EDIT_EM_SetSel(es, s, s, FALSE);
es->flags |= EF_MODIFIED;
if (send_update) es->flags |= EF_UPDATE;
if (hrgn)
{
EDIT_UpdateTextRegion(es, hrgn, TRUE);
DeleteObject(hrgn);
}
else
EDIT_UpdateText(es, NULL, TRUE);
EDIT_EM_ScrollCaret(es);
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
if(send_update || (es->flags & EF_UPDATE))
{
es->flags &= ~EF_UPDATE;
EDIT_NOTIFY_PARENT(es, EN_CHANGE);
}
EDIT_InvalidateUniscribeData(es);
}
/*********************************************************************
*
* EM_SETHANDLE
*
* FIXME: ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
*
*/
static void EDIT_EM_SetHandle(EDITSTATE *es, HLOCAL hloc)
{
if (!(es->style & ES_MULTILINE))
return;
if (!hloc)
return;
EDIT_UnlockBuffer(es, TRUE);
es->hloc32W = hloc;
es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
/* The text buffer handle belongs to the control */
es->hlocapp = NULL;
EDIT_LockBuffer(es);
text_buffer_changed(es);
es->x_offset = es->y_offset = 0;
es->selection_start = es->selection_end = 0;
EDIT_EM_EmptyUndoBuffer(es);
es->flags &= ~EF_MODIFIED;
es->flags &= ~EF_UPDATE;
EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
EDIT_UpdateText(es, NULL, TRUE);
EDIT_EM_ScrollCaret(es);
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
}
/*********************************************************************
*
* EM_SETLIMITTEXT
*
* NOTE: this version currently implements WinNT limits
*
*/
static void EDIT_EM_SetLimitText(EDITSTATE *es, UINT limit)
{
if (!limit) limit = ~0u;
if (!(es->style & ES_MULTILINE)) limit = min(limit, 0x7ffffffe);
es->buffer_limit = limit;
}
/*********************************************************************
*
* EM_SETMARGINS
*
* EC_USEFONTINFO is used as a left or right value i.e. lParam and not as an
* action wParam despite what the docs say. EC_USEFONTINFO calculates the
* margin according to the textmetrics of the current font.
*
* When EC_USEFONTINFO is used in the non_cjk case the margins only
* change if the edit control is equal to or larger than a certain
* size. Though there is an exception for the empty client rect case
* with small font sizes.
*/
static BOOL is_cjk(UINT charset)
{
switch(charset)
{
case SHIFTJIS_CHARSET:
case HANGUL_CHARSET:
case GB2312_CHARSET:
case CHINESEBIG5_CHARSET:
return TRUE;
}
/* HANGUL_CHARSET is strange, though treated as CJK by Win 8, it is
* not by other versions including Win 10. */
return FALSE;
}
static void EDIT_EM_SetMargins(EDITSTATE *es, INT action,
WORD left, WORD right, BOOL repaint)
{
TEXTMETRICW tm;
INT default_left_margin = 0; /* in pixels */
INT default_right_margin = 0; /* in pixels */
/* Set the default margins depending on the font */
if (es->font && (left == EC_USEFONTINFO || right == EC_USEFONTINFO)) {
HDC dc = GetDC(es->hwndSelf);
HFONT old_font = SelectObject(dc, es->font);
LONG width = GdiGetCharDimensions(dc, &tm, NULL);
RECT rc;
/* The default margins are only non zero for TrueType or Vector fonts */
if (tm.tmPitchAndFamily & ( TMPF_VECTOR | TMPF_TRUETYPE )) {
if (!is_cjk(tm.tmCharSet)) {
default_left_margin = width / 2;
default_right_margin = width / 2;
GetClientRect(es->hwndSelf, &rc);
if (rc.right - rc.left < (width / 2 + width) * 2 &&
(width >= 28 || !IsRectEmpty(&rc)) ) {
default_left_margin = es->left_margin;
default_right_margin = es->right_margin;
}
} else {
/* FIXME: figure out the CJK values. They are not affected by the client rect. */
default_left_margin = width / 2;
default_right_margin = width / 2;
}
}
SelectObject(dc, old_font);
ReleaseDC(es->hwndSelf, dc);
}
if (action & EC_LEFTMARGIN) {
es->format_rect.left -= es->left_margin;
if (left != EC_USEFONTINFO)
es->left_margin = left;
else
es->left_margin = default_left_margin;
es->format_rect.left += es->left_margin;
}
if (action & EC_RIGHTMARGIN) {
es->format_rect.right += es->right_margin;
if (right != EC_USEFONTINFO)
es->right_margin = right;
else
es->right_margin = default_right_margin;
es->format_rect.right -= es->right_margin;
}
if (action & (EC_LEFTMARGIN | EC_RIGHTMARGIN)) {
EDIT_AdjustFormatRect(es);
if (repaint) EDIT_UpdateText(es, NULL, TRUE);
}
TRACE("left=%d, right=%d\n", es->left_margin, es->right_margin);
}
/*********************************************************************
*
* EM_SETPASSWORDCHAR
*
*/
static void EDIT_EM_SetPasswordChar(EDITSTATE *es, WCHAR c)
{
LONG style;
if (es->style & ES_MULTILINE)
return;
if (es->password_char == c)
return;
style = GetWindowLongW( es->hwndSelf, GWL_STYLE );
es->password_char = c;
if (c) {
SetWindowLongW( es->hwndSelf, GWL_STYLE, style | ES_PASSWORD );
es->style |= ES_PASSWORD;
} else {
SetWindowLongW( es->hwndSelf, GWL_STYLE, style & ~ES_PASSWORD );
es->style &= ~ES_PASSWORD;
}
EDIT_InvalidateUniscribeData(es);
EDIT_UpdateText(es, NULL, TRUE);
}
/*********************************************************************
*
* EM_SETTABSTOPS
*
*/
static BOOL EDIT_EM_SetTabStops(EDITSTATE *es, INT count, const INT *tabs)
{
if (!(es->style & ES_MULTILINE))
return FALSE;
heap_free(es->tabs);
es->tabs_count = count;
if (!count)
es->tabs = NULL;
else {
es->tabs = heap_alloc(count * sizeof(INT));
memcpy(es->tabs, tabs, count * sizeof(INT));
}
EDIT_InvalidateUniscribeData(es);
return TRUE;
}
/*********************************************************************
*
* EM_SETWORDBREAKPROC
*
*/
static void EDIT_EM_SetWordBreakProc(EDITSTATE *es, EDITWORDBREAKPROCW wbp)
{
if (es->word_break_proc == wbp)
return;
es->word_break_proc = wbp;
if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
EDIT_UpdateText(es, NULL, TRUE);
}
}
/*********************************************************************
*
* EM_UNDO / WM_UNDO
*
*/
static BOOL EDIT_EM_Undo(EDITSTATE *es)
{
INT ulength;
LPWSTR utext;
/* As per MSDN spec, for a single-line edit control,
the return value is always TRUE */
if( es->style & ES_READONLY )
return !(es->style & ES_MULTILINE);
ulength = strlenW(es->undo_text);
utext = heap_alloc((ulength + 1) * sizeof(WCHAR));
strcpyW(utext, es->undo_text);
TRACE("before UNDO:insertion length = %d, deletion buffer = %s\n",
es->undo_insert_count, debugstr_w(utext));
EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
EDIT_EM_EmptyUndoBuffer(es);
EDIT_EM_ReplaceSel(es, TRUE, utext, ulength, TRUE, TRUE);
EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
/* send the notification after the selection start and end are set */
EDIT_NOTIFY_PARENT(es, EN_CHANGE);
EDIT_EM_ScrollCaret(es);
heap_free(utext);
TRACE("after UNDO:insertion length = %d, deletion buffer = %s\n",
es->undo_insert_count, debugstr_w(es->undo_text));
return TRUE;
}
/* Helper function for WM_CHAR
*
* According to an MSDN blog article titled "Just because you're a control
* doesn't mean that you're necessarily inside a dialog box," multiline edit
* controls without ES_WANTRETURN would attempt to detect whether it is inside
* a dialog box or not.
*/
static inline BOOL EDIT_IsInsideDialog(EDITSTATE *es)
{
return (es->flags & EF_DIALOGMODE);
}
/*********************************************************************
*
* WM_PASTE
*
*/
static void EDIT_WM_Paste(EDITSTATE *es)
{
HGLOBAL hsrc;
LPWSTR src, ptr;
int len;
/* Protect read-only edit control from modification */
if(es->style & ES_READONLY)
return;
OpenClipboard(es->hwndSelf);
if ((hsrc = GetClipboardData(CF_UNICODETEXT))) {
src = GlobalLock(hsrc);
len = strlenW(src);
/* Protect single-line edit against pasting new line character */
if (!(es->style & ES_MULTILINE) && ((ptr = strchrW(src, '\n')))) {
len = ptr - src;
if (len && src[len - 1] == '\r')
--len;
}
EDIT_EM_ReplaceSel(es, TRUE, src, len, TRUE, TRUE);
GlobalUnlock(hsrc);
}
else if (es->style & ES_PASSWORD) {
/* clear selected text in password edit box even with empty clipboard */
EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
}
CloseClipboard();
}
/*********************************************************************
*
* WM_COPY
*
*/
static void EDIT_WM_Copy(EDITSTATE *es)
{
INT s = min(es->selection_start, es->selection_end);
INT e = max(es->selection_start, es->selection_end);
HGLOBAL hdst;
LPWSTR dst;
DWORD len;
if (e == s) return;
len = e - s;
hdst = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, (len + 1) * sizeof(WCHAR));
dst = GlobalLock(hdst);
memcpy(dst, es->text + s, len * sizeof(WCHAR));
dst[len] = 0; /* ensure 0 termination */
TRACE("%s\n", debugstr_w(dst));
GlobalUnlock(hdst);
OpenClipboard(es->hwndSelf);
EmptyClipboard();
SetClipboardData(CF_UNICODETEXT, hdst);
CloseClipboard();
}
/*********************************************************************
*
* WM_CLEAR
*
*/
static inline void EDIT_WM_Clear(EDITSTATE *es)
{
/* Protect read-only edit control from modification */
if(es->style & ES_READONLY)
return;
EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
}
/*********************************************************************
*
* WM_CUT
*
*/
static inline void EDIT_WM_Cut(EDITSTATE *es)
{
EDIT_WM_Copy(es);
EDIT_WM_Clear(es);
}
/*********************************************************************
*
* WM_CHAR
*
*/
static LRESULT EDIT_WM_Char(EDITSTATE *es, WCHAR c)
{
BOOL control;
control = GetKeyState(VK_CONTROL) & 0x8000;
switch (c) {
case '\r':
/* If it's not a multiline edit box, it would be ignored below.
* For multiline edit without ES_WANTRETURN, we have to make a
* special case.
*/
if ((es->style & ES_MULTILINE) && !(es->style & ES_WANTRETURN))
if (EDIT_IsInsideDialog(es))
break;
case '\n':
if (es->style & ES_MULTILINE) {
if (es->style & ES_READONLY) {
EDIT_MoveHome(es, FALSE, FALSE);
EDIT_MoveDown_ML(es, FALSE);
} else {
static const WCHAR cr_lfW[] = {'\r','\n'};
EDIT_EM_ReplaceSel(es, TRUE, cr_lfW, 2, TRUE, TRUE);
}
}
break;
case '\t':
if ((es->style & ES_MULTILINE) && !(es->style & ES_READONLY))
{
static const WCHAR tabW[] = {'\t'};
if (EDIT_IsInsideDialog(es))
break;
EDIT_EM_ReplaceSel(es, TRUE, tabW, 1, TRUE, TRUE);
}
break;
case VK_BACK:
if (!(es->style & ES_READONLY) && !control) {
if (es->selection_start != es->selection_end)
EDIT_WM_Clear(es);
else {
/* delete character left of caret */
EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
EDIT_MoveBackward(es, TRUE);
EDIT_WM_Clear(es);
}
}
break;
case 0x03: /* ^C */
if (!(es->style & ES_PASSWORD))
SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
break;
case 0x16: /* ^V */
if (!(es->style & ES_READONLY))
SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
break;
case 0x18: /* ^X */
if (!((es->style & ES_READONLY) || (es->style & ES_PASSWORD)))
SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
break;
case 0x1A: /* ^Z */
if (!(es->style & ES_READONLY))
SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
break;
default:
/*If Edit control style is ES_NUMBER allow users to key in only numeric values*/
if( (es->style & ES_NUMBER) && !( c >= '0' && c <= '9') )
break;
if (!(es->style & ES_READONLY) && (c >= ' ') && (c != 127))
EDIT_EM_ReplaceSel(es, TRUE, &c, 1, TRUE, TRUE);
break;
}
return 1;
}
/*********************************************************************
*
* EDIT_ContextMenuCommand
*
*/
static void EDIT_ContextMenuCommand(EDITSTATE *es, UINT id)
{
switch (id) {
case EM_UNDO:
SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
break;
case WM_CUT:
SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
break;
case WM_COPY:
SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
break;
case WM_PASTE:
SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
break;
case WM_CLEAR:
SendMessageW(es->hwndSelf, WM_CLEAR, 0, 0);
break;
case EM_SETSEL:
SendMessageW(es->hwndSelf, EM_SETSEL, 0, -1);
break;
default:
ERR("unknown menu item, please report\n");
break;
}
}
/*********************************************************************
*
* WM_CONTEXTMENU
*
* Note: the resource files resource/sysres_??.rc cannot define a
* single popup menu. Hence we use a (dummy) menubar
* containing the single popup menu as its first item.
*
* FIXME: the message identifiers have been chosen arbitrarily,
* hence we use MF_BYPOSITION.
* We might as well use the "real" values (anybody knows ?)
* The menu definition is in resources/sysres_??.rc.
* Once these are OK, we better use MF_BYCOMMAND here
* (as we do in EDIT_WM_Command()).
*
*/
static void EDIT_WM_ContextMenu(EDITSTATE *es, INT x, INT y)
{
HMENU menu = LoadMenuA(GetModuleHandleA("user32.dll"), "EDITMENU");
HMENU popup = GetSubMenu(menu, 0);
UINT start = es->selection_start;
UINT end = es->selection_end;
UINT cmd;
POINT pt;
ORDER_UINT(start, end);
/* undo */
EnableMenuItem(popup, 0, MF_BYPOSITION | (EDIT_EM_CanUndo(es) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
/* cut */
EnableMenuItem(popup, 2, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
/* copy */
EnableMenuItem(popup, 3, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) ? MF_ENABLED : MF_GRAYED));
/* paste */
EnableMenuItem(popup, 4, MF_BYPOSITION | (IsClipboardFormatAvailable(CF_UNICODETEXT) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
/* delete */
EnableMenuItem(popup, 5, MF_BYPOSITION | ((end - start) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
/* select all */
EnableMenuItem(popup, 7, MF_BYPOSITION | (start || (end != get_text_length(es)) ? MF_ENABLED : MF_GRAYED));
pt.x = x;
pt.y = y;
if (pt.x == -1 && pt.y == -1) /* passed via VK_APPS press/release */
{
RECT rc;
/* Windows places the menu at the edit's center in this case */
GetClientRect(es->hwndSelf, &rc);
pt.x = rc.left + (rc.right - rc.left) / 2;
pt.y = rc.top + (rc.bottom - rc.top) / 2;
ClientToScreen(es->hwndSelf, &pt);
}
if (!(es->flags & EF_FOCUSED))
SetFocus(es->hwndSelf);
cmd = TrackPopupMenu(popup, TPM_LEFTALIGN | TPM_RIGHTBUTTON | TPM_RETURNCMD | TPM_NONOTIFY,
pt.x, pt.y, 0, es->hwndSelf, NULL);
if (cmd)
EDIT_ContextMenuCommand(es, cmd);
DestroyMenu(menu);
}
/*********************************************************************
*
* WM_GETTEXT
*
*/
static INT EDIT_WM_GetText(const EDITSTATE *es, INT count, LPWSTR dst)
{
if (!count)
return 0;
lstrcpynW(dst, es->text, count);
return strlenW(dst);
}
/*********************************************************************
*
* EDIT_CheckCombo
*
*/
static BOOL EDIT_CheckCombo(EDITSTATE *es, UINT msg, INT key)
{
HWND hLBox = es->hwndListBox;
HWND hCombo;
BOOL bDropped;
int nEUI;
if (!hLBox)
return FALSE;
hCombo = GetParent(es->hwndSelf);
bDropped = TRUE;
nEUI = 0;
TRACE("[%p]: handling msg %x (%x)\n", es->hwndSelf, msg, key);
if (key == VK_UP || key == VK_DOWN)
{
if (SendMessageW(hCombo, CB_GETEXTENDEDUI, 0, 0))
nEUI = 1;
if (msg == WM_KEYDOWN || nEUI)
bDropped = (BOOL)SendMessageW(hCombo, CB_GETDROPPEDSTATE, 0, 0);
}
switch (msg)
{
case WM_KEYDOWN:
if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
{
/* make sure ComboLBox pops up */
SendMessageW(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
key = VK_F4;
nEUI = 2;
}
SendMessageW(hLBox, WM_KEYDOWN, key, 0);
break;
case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
if (nEUI)
SendMessageW(hCombo, CB_SHOWDROPDOWN, !bDropped, 0);
else
SendMessageW(hLBox, WM_KEYDOWN, VK_F4, 0);
break;
}
if (nEUI == 2)
SendMessageW(hCombo, CB_SETEXTENDEDUI, TRUE, 0);
return TRUE;
}
/*********************************************************************
*
* WM_KEYDOWN
*
* Handling of special keys that don't produce a WM_CHAR
* (i.e. non-printable keys) & Backspace & Delete
*
*/
static LRESULT EDIT_WM_KeyDown(EDITSTATE *es, INT key)
{
BOOL shift;
BOOL control;
if (GetKeyState(VK_MENU) & 0x8000)
return 0;
shift = GetKeyState(VK_SHIFT) & 0x8000;
control = GetKeyState(VK_CONTROL) & 0x8000;
switch (key) {
case VK_F4:
case VK_UP:
if (EDIT_CheckCombo(es, WM_KEYDOWN, key) || key == VK_F4)
break;
/* fall through */
case VK_LEFT:
if ((es->style & ES_MULTILINE) && (key == VK_UP))
EDIT_MoveUp_ML(es, shift);
else
if (control)
EDIT_MoveWordBackward(es, shift);
else
EDIT_MoveBackward(es, shift);
break;
case VK_DOWN:
if (EDIT_CheckCombo(es, WM_KEYDOWN, key))
break;
/* fall through */
case VK_RIGHT:
if ((es->style & ES_MULTILINE) && (key == VK_DOWN))
EDIT_MoveDown_ML(es, shift);
else if (control)
EDIT_MoveWordForward(es, shift);
else
EDIT_MoveForward(es, shift);
break;
case VK_HOME:
EDIT_MoveHome(es, shift, control);
break;
case VK_END:
EDIT_MoveEnd(es, shift, control);
break;
case VK_PRIOR:
if (es->style & ES_MULTILINE)
EDIT_MovePageUp_ML(es, shift);
else
EDIT_CheckCombo(es, WM_KEYDOWN, key);
break;
case VK_NEXT:
if (es->style & ES_MULTILINE)
EDIT_MovePageDown_ML(es, shift);
else
EDIT_CheckCombo(es, WM_KEYDOWN, key);
break;
case VK_DELETE:
if (!(es->style & ES_READONLY) && !(shift && control)) {
if (es->selection_start != es->selection_end) {
if (shift)
EDIT_WM_Cut(es);
else
EDIT_WM_Clear(es);
} else {
if (shift) {
/* delete character left of caret */
EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
EDIT_MoveBackward(es, TRUE);
EDIT_WM_Clear(es);
} else if (control) {
/* delete to end of line */
EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
EDIT_MoveEnd(es, TRUE, FALSE);
EDIT_WM_Clear(es);
} else {
/* delete character right of caret */
EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
EDIT_MoveForward(es, TRUE);
EDIT_WM_Clear(es);
}
}
}
break;
case VK_INSERT:
if (shift) {
if (!(es->style & ES_READONLY))
EDIT_WM_Paste(es);
} else if (control)
EDIT_WM_Copy(es);
break;
case VK_RETURN:
/* If the edit doesn't want the return send a message to the default object */
if(!(es->style & ES_MULTILINE) || !(es->style & ES_WANTRETURN))
{
DWORD dw;
if (!EDIT_IsInsideDialog(es)) break;
if (control) break;
dw = SendMessageW(es->hwndParent, DM_GETDEFID, 0, 0);
if (HIWORD(dw) == DC_HASDEFID)
{
HWND hwDefCtrl = GetDlgItem(es->hwndParent, LOWORD(dw));
if (hwDefCtrl)
{
SendMessageW(es->hwndParent, WM_NEXTDLGCTL, (WPARAM)hwDefCtrl, TRUE);
PostMessageW(hwDefCtrl, WM_KEYDOWN, VK_RETURN, 0);
}
}
}
break;
case VK_ESCAPE:
if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
PostMessageW(es->hwndParent, WM_CLOSE, 0, 0);
break;
case VK_TAB:
if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
SendMessageW(es->hwndParent, WM_NEXTDLGCTL, shift, 0);
break;
case 'A':
if (control)
{
if (EDIT_EM_SetSel(es, 0, get_text_length(es), FALSE))
{
EDIT_NOTIFY_PARENT(es, EN_UPDATE);
EDIT_NOTIFY_PARENT(es, EN_CHANGE);
}
}
break;
}
return TRUE;
}
/*********************************************************************
*
* WM_KILLFOCUS
*
*/
static LRESULT EDIT_WM_KillFocus(HTHEME theme, EDITSTATE *es)
{
UINT flags = RDW_INVALIDATE | RDW_UPDATENOW;
es->flags &= ~EF_FOCUSED;
DestroyCaret();
if (!(es->style & ES_NOHIDESEL))
EDIT_InvalidateText(es, es->selection_start, es->selection_end);
EDIT_NOTIFY_PARENT(es, EN_KILLFOCUS);
/* Throw away left over scroll when we lose focus */
es->wheelDeltaRemainder = 0;
if (theme)
flags |= RDW_FRAME;
RedrawWindow(es->hwndSelf, NULL, NULL, flags);
return 0;
}
/*********************************************************************
*
* WM_LBUTTONDBLCLK
*
* The caret position has been set on the WM_LBUTTONDOWN message
*
*/
static LRESULT EDIT_WM_LButtonDblClk(EDITSTATE *es)
{
INT s;
INT e = es->selection_end;
INT l;
INT li;
INT ll;
es->bCaptureState = TRUE;
SetCapture(es->hwndSelf);
l = EDIT_EM_LineFromChar(es, e);
li = EDIT_EM_LineIndex(es, l);
ll = EDIT_EM_LineLength(es, e);
s = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_RIGHT);
EDIT_EM_SetSel(es, s, e, FALSE);
EDIT_EM_ScrollCaret(es);
es->region_posx = es->region_posy = 0;
SetTimer(es->hwndSelf, 0, 100, NULL);
return 0;
}
/*********************************************************************
*
* WM_LBUTTONDOWN
*
*/
static LRESULT EDIT_WM_LButtonDown(EDITSTATE *es, DWORD keys, INT x, INT y)
{
INT e;
BOOL after_wrap;
es->bCaptureState = TRUE;
SetCapture(es->hwndSelf);
EDIT_ConfinePoint(es, &x, &y);
e = EDIT_CharFromPos(es, x, y, &after_wrap);
EDIT_EM_SetSel(es, (keys & MK_SHIFT) ? es->selection_start : e, e, after_wrap);
EDIT_EM_ScrollCaret(es);
es->region_posx = es->region_posy = 0;
SetTimer(es->hwndSelf, 0, 100, NULL);
if (!(es->flags & EF_FOCUSED))
SetFocus(es->hwndSelf);
return 0;
}
/*********************************************************************
*
* WM_LBUTTONUP
*
*/
static LRESULT EDIT_WM_LButtonUp(EDITSTATE *es)
{
if (es->bCaptureState) {
KillTimer(es->hwndSelf, 0);
if (GetCapture() == es->hwndSelf) ReleaseCapture();
}
es->bCaptureState = FALSE;
return 0;
}
/*********************************************************************
*
* WM_MBUTTONDOWN
*
*/
static LRESULT EDIT_WM_MButtonDown(EDITSTATE *es)
{
SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
return 0;
}
/*********************************************************************
*
* WM_MOUSEMOVE
*
*/
static LRESULT EDIT_WM_MouseMove(EDITSTATE *es, INT x, INT y)
{
INT e;
BOOL after_wrap;
INT prex, prey;
/* If the mouse has been captured by process other than the edit control itself,
* the windows edit controls will not select the strings with mouse move.
*/
if (!es->bCaptureState || GetCapture() != es->hwndSelf)
return 0;
/*
* FIXME: gotta do some scrolling if outside client
* area. Maybe reset the timer ?
*/
prex = x; prey = y;
EDIT_ConfinePoint(es, &x, &y);
es->region_posx = (prex < x) ? -1 : ((prex > x) ? 1 : 0);
es->region_posy = (prey < y) ? -1 : ((prey > y) ? 1 : 0);
e = EDIT_CharFromPos(es, x, y, &after_wrap);
EDIT_EM_SetSel(es, es->selection_start, e, after_wrap);
EDIT_SetCaretPos(es,es->selection_end,es->flags & EF_AFTER_WRAP);
return 0;
}
/*********************************************************************
*
* WM_PAINT
*
*/
static void EDIT_WM_Paint(EDITSTATE *es, HDC hdc)
{
PAINTSTRUCT ps;
INT i;
HDC dc;
HFONT old_font = 0;
RECT rc;
RECT rcClient;
RECT rcLine;
RECT rcRgn;
HBRUSH brush;
HBRUSH old_brush;
INT bw, bh;
BOOL rev = es->bEnableState &&
((es->flags & EF_FOCUSED) ||
(es->style & ES_NOHIDESEL));
dc = hdc ? hdc : BeginPaint(es->hwndSelf, &ps);
/* The dc we use for calculating may not be the one we paint into.
This is the safest action. */
EDIT_InvalidateUniscribeData(es);
GetClientRect(es->hwndSelf, &rcClient);
/* get the background brush */
brush = EDIT_NotifyCtlColor(es, dc);
/* paint the border and the background */
IntersectClipRect(dc, rcClient.left, rcClient.top, rcClient.right, rcClient.bottom);
if(es->style & WS_BORDER) {
bw = GetSystemMetrics(SM_CXBORDER);
bh = GetSystemMetrics(SM_CYBORDER);
rc = rcClient;
if(es->style & ES_MULTILINE) {
if(es->style & WS_HSCROLL) rc.bottom+=bh;
if(es->style & WS_VSCROLL) rc.right+=bw;
}
/* Draw the frame. Same code as in nonclient.c */
old_brush = SelectObject(dc, GetSysColorBrush(COLOR_WINDOWFRAME));
PatBlt(dc, rc.left, rc.top, rc.right - rc.left, bh, PATCOPY);
PatBlt(dc, rc.left, rc.top, bw, rc.bottom - rc.top, PATCOPY);
PatBlt(dc, rc.left, rc.bottom - 1, rc.right - rc.left, -bw, PATCOPY);
PatBlt(dc, rc.right - 1, rc.top, -bw, rc.bottom - rc.top, PATCOPY);
SelectObject(dc, old_brush);
/* Keep the border clean */
IntersectClipRect(dc, rc.left+bw, rc.top+bh,
max(rc.right-bw, rc.left+bw), max(rc.bottom-bh, rc.top+bh));
}
GetClipBox(dc, &rc);
FillRect(dc, &rc, brush);
IntersectClipRect(dc, es->format_rect.left,
es->format_rect.top,
es->format_rect.right,
es->format_rect.bottom);
if (es->style & ES_MULTILINE) {
rc = rcClient;
IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
}
if (es->font)
old_font = SelectObject(dc, es->font);
if (!es->bEnableState)
SetTextColor(dc, GetSysColor(COLOR_GRAYTEXT));
GetClipBox(dc, &rcRgn);
if (es->style & ES_MULTILINE) {
INT vlc = get_vertical_line_count(es);
for (i = es->y_offset ; i <= min(es->y_offset + vlc, es->y_offset + es->line_count - 1) ; i++) {
EDIT_UpdateUniscribeData(es, dc, i);
EDIT_GetLineRect(es, i, 0, -1, &rcLine);
if (IntersectRect(&rc, &rcRgn, &rcLine))
EDIT_PaintLine(es, dc, i, rev);
}
} else {
EDIT_UpdateUniscribeData(es, dc, 0);
EDIT_GetLineRect(es, 0, 0, -1, &rcLine);
if (IntersectRect(&rc, &rcRgn, &rcLine))
EDIT_PaintLine(es, dc, 0, rev);
}
if (es->font)
SelectObject(dc, old_font);
if (!hdc)
EndPaint(es->hwndSelf, &ps);
}
static void EDIT_WM_NCPaint(HWND hwnd, HRGN region)
{
DWORD exStyle = GetWindowLongW(hwnd, GWL_EXSTYLE);
HTHEME theme = GetWindowTheme(hwnd);
HRGN cliprgn = region;
if (theme && exStyle & WS_EX_CLIENTEDGE)
{
HDC dc;
RECT r;
int cxEdge = GetSystemMetrics(SM_CXEDGE),
cyEdge = GetSystemMetrics(SM_CYEDGE);
const int part = EP_EDITTEXT;
int state = ETS_NORMAL;
DWORD dwStyle = GetWindowLongW(hwnd, GWL_STYLE);
if (!IsWindowEnabled(hwnd))
state = ETS_DISABLED;
else if (dwStyle & ES_READONLY)
state = ETS_READONLY;
else if (GetFocus() == hwnd)
state = ETS_FOCUSED;
GetWindowRect(hwnd, &r);
/* New clipping region passed to default proc to exclude border */
cliprgn = CreateRectRgn(r.left + cxEdge, r.top + cyEdge,
r.right - cxEdge, r.bottom - cyEdge);
if (region != (HRGN)1)
CombineRgn(cliprgn, cliprgn, region, RGN_AND);
OffsetRect(&r, -r.left, -r.top);
#ifdef __REACTOS__ /* r73789 */
dc = GetWindowDC(hwnd);
/* Exclude client part */
ExcludeClipRect(dc,
r.left + cxEdge,
r.top + cyEdge,
r.right - cxEdge,
r.bottom -cyEdge);
#else
dc = GetDCEx(hwnd, region, DCX_WINDOW|DCX_INTERSECTRGN);
OffsetRect(&r, -r.left, -r.top);
#endif
if (IsThemeBackgroundPartiallyTransparent(theme, part, state))
DrawThemeParentBackground(hwnd, dc, &r);
DrawThemeBackground(theme, dc, part, state, &r, 0);
ReleaseDC(hwnd, dc);
}
/* Call default proc to get the scrollbars etc. also painted */
DefWindowProcW (hwnd, WM_NCPAINT, (WPARAM)cliprgn, 0);
}
/*********************************************************************
*
* WM_SETFOCUS
*
*/
static void EDIT_WM_SetFocus(HTHEME theme, EDITSTATE *es)
{
UINT flags = RDW_INVALIDATE | RDW_UPDATENOW;
es->flags |= EF_FOCUSED;
if (!(es->style & ES_NOHIDESEL))
EDIT_InvalidateText(es, es->selection_start, es->selection_end);
CreateCaret(es->hwndSelf, 0, 1, es->line_height);
EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
ShowCaret(es->hwndSelf);
EDIT_NOTIFY_PARENT(es, EN_SETFOCUS);
if (theme)
flags |= RDW_FRAME | RDW_ERASE;
RedrawWindow(es->hwndSelf, NULL, NULL, flags);
}
/*********************************************************************
*
* WM_SETFONT
*
* With Win95 look the margins are set to default font value unless
* the system font (font == 0) is being set, in which case they are left
* unchanged.
*
*/
static void EDIT_WM_SetFont(EDITSTATE *es, HFONT font, BOOL redraw)
{
TEXTMETRICW tm;
HDC dc;
HFONT old_font = 0;
RECT clientRect;
es->font = font;
EDIT_InvalidateUniscribeData(es);
dc = GetDC(es->hwndSelf);
if (font)
old_font = SelectObject(dc, font);
GetTextMetricsW(dc, &tm);
es->line_height = tm.tmHeight;
es->char_width = tm.tmAveCharWidth;
if (font)
SelectObject(dc, old_font);
ReleaseDC(es->hwndSelf, dc);
/* Reset the format rect and the margins */
GetClientRect(es->hwndSelf, &clientRect);
EDIT_SetRectNP(es, &clientRect);
EDIT_EM_SetMargins(es, EC_LEFTMARGIN | EC_RIGHTMARGIN,
EC_USEFONTINFO, EC_USEFONTINFO, FALSE);
if (es->style & ES_MULTILINE)
EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
else
EDIT_CalcLineWidth_SL(es);
if (redraw)
EDIT_UpdateText(es, NULL, TRUE);
if (es->flags & EF_FOCUSED) {
DestroyCaret();
CreateCaret(es->hwndSelf, 0, 1, es->line_height);
EDIT_SetCaretPos(es, es->selection_end,
es->flags & EF_AFTER_WRAP);
ShowCaret(es->hwndSelf);
}
}
/*********************************************************************
*
* WM_SETTEXT
*
* NOTES
* For multiline controls (ES_MULTILINE), reception of WM_SETTEXT triggers:
* The modified flag is reset. No notifications are sent.
*
* For single-line controls, reception of WM_SETTEXT triggers:
* The modified flag is reset. EN_UPDATE and EN_CHANGE notifications are sent.
*
*/
static void EDIT_WM_SetText(EDITSTATE *es, LPCWSTR text)
{
if (es->flags & EF_UPDATE)
/* fixed this bug once; complain if we see it about to happen again. */
ERR("SetSel may generate UPDATE message whose handler may reset "
"selection.\n");
EDIT_EM_SetSel(es, 0, (UINT)-1, FALSE);
if (text)
{
TRACE("%s\n", debugstr_w(text));
EDIT_EM_ReplaceSel(es, FALSE, text, strlenW(text), FALSE, FALSE);
}
else
{
TRACE("<NULL>\n");
EDIT_EM_ReplaceSel(es, FALSE, NULL, 0, FALSE, FALSE);
}
es->x_offset = 0;
es->flags &= ~EF_MODIFIED;
EDIT_EM_SetSel(es, 0, 0, FALSE);
/* Send the notification after the selection start and end have been set
* edit control doesn't send notification on WM_SETTEXT
* if it is multiline, or it is part of combobox
*/
if( !((es->style & ES_MULTILINE) || es->hwndListBox))
{
EDIT_NOTIFY_PARENT(es, EN_UPDATE);
EDIT_NOTIFY_PARENT(es, EN_CHANGE);
}
EDIT_EM_ScrollCaret(es);
EDIT_UpdateScrollInfo(es);
EDIT_InvalidateUniscribeData(es);
}
/*********************************************************************
*
* WM_SIZE
*
*/
static void EDIT_WM_Size(EDITSTATE *es, UINT action)
{
if ((action == SIZE_MAXIMIZED) || (action == SIZE_RESTORED)) {
RECT rc;
GetClientRect(es->hwndSelf, &rc);
EDIT_SetRectNP(es, &rc);
EDIT_UpdateText(es, NULL, TRUE);
}
}
/*********************************************************************
*
* WM_STYLECHANGED
*
* This message is sent by SetWindowLong on having changed either the Style
* or the extended style.
*
* We ensure that the window's version of the styles and the EDITSTATE's agree.
*
* See also EDIT_WM_NCCreate
*
* It appears that the Windows version of the edit control allows the style
* (as retrieved by GetWindowLong) to be any value and maintains an internal
* style variable which will generally be different. In this function we
* update the internal style based on what changed in the externally visible
* style.
*
* Much of this content as based upon the MSDN, especially:
* Platform SDK Documentation -> User Interface Services ->
* Windows User Interface -> Edit Controls -> Edit Control Reference ->
* Edit Control Styles
*/
static LRESULT EDIT_WM_StyleChanged ( EDITSTATE *es, WPARAM which, const STYLESTRUCT *style)
{
if (GWL_STYLE == which) {
DWORD style_change_mask;
DWORD new_style;
/* Only a subset of changes can be applied after the control
* has been created.
*/
style_change_mask = ES_UPPERCASE | ES_LOWERCASE |
ES_NUMBER;
if (es->style & ES_MULTILINE)
style_change_mask |= ES_WANTRETURN;
new_style = style->styleNew & style_change_mask;
/* Number overrides lowercase overrides uppercase (at least it
* does in Win95). However I'll bet that ES_NUMBER would be
* invalid under Win 3.1.
*/
if (new_style & ES_NUMBER) {
; /* do not override the ES_NUMBER */
} else if (new_style & ES_LOWERCASE) {
new_style &= ~ES_UPPERCASE;
}
es->style = (es->style & ~style_change_mask) | new_style;
} else if (GWL_EXSTYLE == which) {
; /* FIXME - what is needed here */
} else {
WARN ("Invalid style change %ld\n",which);
}
return 0;
}
/*********************************************************************
*
* WM_SYSKEYDOWN
*
*/
static LRESULT EDIT_WM_SysKeyDown(EDITSTATE *es, INT key, DWORD key_data)
{
if ((key == VK_BACK) && (key_data & 0x2000)) {
if (EDIT_EM_CanUndo(es))
EDIT_EM_Undo(es);
return 0;
} else if (key == VK_UP || key == VK_DOWN) {
if (EDIT_CheckCombo(es, WM_SYSKEYDOWN, key))
return 0;
}
return DefWindowProcW(es->hwndSelf, WM_SYSKEYDOWN, key, key_data);
}
/*********************************************************************
*
* WM_TIMER
*
*/
static void EDIT_WM_Timer(EDITSTATE *es)
{
if (es->region_posx < 0) {
EDIT_MoveBackward(es, TRUE);
} else if (es->region_posx > 0) {
EDIT_MoveForward(es, TRUE);
}
/*
* FIXME: gotta do some vertical scrolling here, like
* EDIT_EM_LineScroll(hwnd, 0, 1);
*/
}
/*********************************************************************
*
* WM_HSCROLL
*
*/
static LRESULT EDIT_WM_HScroll(EDITSTATE *es, INT action, INT pos)
{
INT dx;
INT fw;
if (!(es->style & ES_MULTILINE))
return 0;
if (!(es->style & ES_AUTOHSCROLL))
return 0;
dx = 0;
fw = es->format_rect.right - es->format_rect.left;
switch (action) {
case SB_LINELEFT:
TRACE("SB_LINELEFT\n");
if (es->x_offset)
dx = -es->char_width;
break;
case SB_LINERIGHT:
TRACE("SB_LINERIGHT\n");
if (es->x_offset < es->text_width)
dx = es->char_width;
break;
case SB_PAGELEFT:
TRACE("SB_PAGELEFT\n");
if (es->x_offset)
dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
break;
case SB_PAGERIGHT:
TRACE("SB_PAGERIGHT\n");
if (es->x_offset < es->text_width)
dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
break;
case SB_LEFT:
TRACE("SB_LEFT\n");
if (es->x_offset)
dx = -es->x_offset;
break;
case SB_RIGHT:
TRACE("SB_RIGHT\n");
if (es->x_offset < es->text_width)
dx = es->text_width - es->x_offset;
break;
case SB_THUMBTRACK:
TRACE("SB_THUMBTRACK %d\n", pos);
es->flags |= EF_HSCROLL_TRACK;
if(es->style & WS_HSCROLL)
dx = pos - es->x_offset;
else
{
INT fw, new_x;
/* Sanity check */
if(pos < 0 || pos > 100) return 0;
/* Assume default scroll range 0-100 */
fw = es->format_rect.right - es->format_rect.left;
new_x = pos * (es->text_width - fw) / 100;
dx = es->text_width ? (new_x - es->x_offset) : 0;
}
break;
case SB_THUMBPOSITION:
TRACE("SB_THUMBPOSITION %d\n", pos);
es->flags &= ~EF_HSCROLL_TRACK;
if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
dx = pos - es->x_offset;
else
{
INT fw, new_x;
/* Sanity check */
if(pos < 0 || pos > 100) return 0;
/* Assume default scroll range 0-100 */
fw = es->format_rect.right - es->format_rect.left;
new_x = pos * (es->text_width - fw) / 100;
dx = es->text_width ? (new_x - es->x_offset) : 0;
}
if (!dx) {
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
}
break;
case SB_ENDSCROLL:
TRACE("SB_ENDSCROLL\n");
break;
/*
* FIXME : the next two are undocumented !
* Are we doing the right thing ?
* At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
* although it's also a regular control message.
*/
case EM_GETTHUMB: /* this one is used by NT notepad */
{
LRESULT ret;
if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
ret = GetScrollPos(es->hwndSelf, SB_HORZ);
else
{
/* Assume default scroll range 0-100 */
INT fw = es->format_rect.right - es->format_rect.left;
ret = es->text_width ? es->x_offset * 100 / (es->text_width - fw) : 0;
}
TRACE("EM_GETTHUMB: returning %ld\n", ret);
return ret;
}
case EM_LINESCROLL:
TRACE("EM_LINESCROLL16\n");
dx = pos;
break;
default:
ERR("undocumented WM_HSCROLL action %d (0x%04x), please report\n",
action, action);
return 0;
}
if (dx)
{
INT fw = es->format_rect.right - es->format_rect.left;
/* check if we are going to move too far */
if(es->x_offset + dx + fw > es->text_width)
dx = es->text_width - fw - es->x_offset;
if(dx)
EDIT_EM_LineScroll_internal(es, dx, 0);
}
return 0;
}
/*********************************************************************
*
* WM_VSCROLL
*
*/
static LRESULT EDIT_WM_VScroll(EDITSTATE *es, INT action, INT pos)
{
INT dy;
if (!(es->style & ES_MULTILINE))
return 0;
if (!(es->style & ES_AUTOVSCROLL))
return 0;
dy = 0;
switch (action) {
case SB_LINEUP:
case SB_LINEDOWN:
case SB_PAGEUP:
case SB_PAGEDOWN:
TRACE("action %d (%s)\n", action, (action == SB_LINEUP ? "SB_LINEUP" :
(action == SB_LINEDOWN ? "SB_LINEDOWN" :
(action == SB_PAGEUP ? "SB_PAGEUP" :
"SB_PAGEDOWN"))));
EDIT_EM_Scroll(es, action);
return 0;
case SB_TOP:
TRACE("SB_TOP\n");
dy = -es->y_offset;
break;
case SB_BOTTOM:
TRACE("SB_BOTTOM\n");
dy = es->line_count - 1 - es->y_offset;
break;
case SB_THUMBTRACK:
TRACE("SB_THUMBTRACK %d\n", pos);
es->flags |= EF_VSCROLL_TRACK;
if(es->style & WS_VSCROLL)
dy = pos - es->y_offset;
else
{
/* Assume default scroll range 0-100 */
INT vlc, new_y;
/* Sanity check */
if(pos < 0 || pos > 100) return 0;
vlc = get_vertical_line_count(es);
new_y = pos * (es->line_count - vlc) / 100;
dy = es->line_count ? (new_y - es->y_offset) : 0;
TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
es->line_count, es->y_offset, pos, dy);
}
break;
case SB_THUMBPOSITION:
TRACE("SB_THUMBPOSITION %d\n", pos);
es->flags &= ~EF_VSCROLL_TRACK;
if(es->style & WS_VSCROLL)
dy = pos - es->y_offset;
else
{
/* Assume default scroll range 0-100 */
INT vlc, new_y;
/* Sanity check */
if(pos < 0 || pos > 100) return 0;
vlc = get_vertical_line_count(es);
new_y = pos * (es->line_count - vlc) / 100;
dy = es->line_count ? (new_y - es->y_offset) : 0;
TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
es->line_count, es->y_offset, pos, dy);
}
if (!dy)
{
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
}
break;
case SB_ENDSCROLL:
TRACE("SB_ENDSCROLL\n");
break;
/*
* FIXME : the next two are undocumented !
* Are we doing the right thing ?
* At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
* although it's also a regular control message.
*/
case EM_GETTHUMB: /* this one is used by NT notepad */
{
LRESULT ret;
if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_VSCROLL)
ret = GetScrollPos(es->hwndSelf, SB_VERT);
else
{
/* Assume default scroll range 0-100 */
INT vlc = get_vertical_line_count(es);
ret = es->line_count ? es->y_offset * 100 / (es->line_count - vlc) : 0;
}
TRACE("EM_GETTHUMB: returning %ld\n", ret);
return ret;
}
case EM_LINESCROLL:
TRACE("EM_LINESCROLL %d\n", pos);
dy = pos;
break;
default:
ERR("undocumented WM_VSCROLL action %d (0x%04x), please report\n",
action, action);
return 0;
}
if (dy)
EDIT_EM_LineScroll(es, 0, dy);
return 0;
}
/*********************************************************************
*
* EM_GETTHUMB
*
* FIXME: is this right ? (or should it be only VSCROLL)
* (and maybe only for edit controls that really have their
* own scrollbars) (and maybe only for multiline controls ?)
* All in all: very poorly documented
*
*/
static LRESULT EDIT_EM_GetThumb(EDITSTATE *es)
{
return MAKELONG(EDIT_WM_VScroll(es, EM_GETTHUMB, 0),
EDIT_WM_HScroll(es, EM_GETTHUMB, 0));
}
/********************************************************************
*
* The Following code is to handle inline editing from IMEs
*/
static void EDIT_GetCompositionStr(HIMC hIMC, LPARAM CompFlag, EDITSTATE *es)
{
LONG buflen;
LPWSTR lpCompStr;
LPSTR lpCompStrAttr = NULL;
DWORD dwBufLenAttr;
buflen = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, NULL, 0);
if (buflen < 0)
{
return;
}
lpCompStr = heap_alloc(buflen);
if (!lpCompStr)
{
ERR("Unable to allocate IME CompositionString\n");
return;
}
if (buflen)
ImmGetCompositionStringW(hIMC, GCS_COMPSTR, lpCompStr, buflen);
if (CompFlag & GCS_COMPATTR)
{
/*
* We do not use the attributes yet. it would tell us what characters
* are in transition and which are converted or decided upon
*/
dwBufLenAttr = ImmGetCompositionStringW(hIMC, GCS_COMPATTR, NULL, 0);
if (dwBufLenAttr)
{
dwBufLenAttr ++;
lpCompStrAttr = heap_alloc(dwBufLenAttr + 1);
if (!lpCompStrAttr)
{
ERR("Unable to allocate IME Attribute String\n");
heap_free(lpCompStr);
return;
}
ImmGetCompositionStringW(hIMC,GCS_COMPATTR, lpCompStrAttr,
dwBufLenAttr);
lpCompStrAttr[dwBufLenAttr] = 0;
}
}
/* check for change in composition start */
if (es->selection_end < es->composition_start)
es->composition_start = es->selection_end;
/* replace existing selection string */
es->selection_start = es->composition_start;
if (es->composition_len > 0)
es->selection_end = es->composition_start + es->composition_len;
else
es->selection_end = es->selection_start;
EDIT_EM_ReplaceSel(es, FALSE, lpCompStr, buflen / sizeof(WCHAR), TRUE, TRUE);
es->composition_len = abs(es->composition_start - es->selection_end);
es->selection_start = es->composition_start;
es->selection_end = es->selection_start + es->composition_len;
heap_free(lpCompStrAttr);
heap_free(lpCompStr);
}
static void EDIT_GetResultStr(HIMC hIMC, EDITSTATE *es)
{
LONG buflen;
LPWSTR lpResultStr;
buflen = ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, NULL, 0);
if (buflen <= 0)
{
return;
}
lpResultStr = heap_alloc(buflen);
if (!lpResultStr)
{
ERR("Unable to alloc buffer for IME string\n");
return;
}
ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, lpResultStr, buflen);
/* check for change in composition start */
if (es->selection_end < es->composition_start)
es->composition_start = es->selection_end;
es->selection_start = es->composition_start;
es->selection_end = es->composition_start + es->composition_len;
EDIT_EM_ReplaceSel(es, TRUE, lpResultStr, buflen / sizeof(WCHAR), TRUE, TRUE);
es->composition_start = es->selection_end;
es->composition_len = 0;
heap_free(lpResultStr);
}
static void EDIT_ImeComposition(HWND hwnd, LPARAM CompFlag, EDITSTATE *es)
{
HIMC hIMC;
int cursor;
if (es->composition_len == 0 && es->selection_start != es->selection_end)
{
EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
es->composition_start = es->selection_end;
}
hIMC = ImmGetContext(hwnd);
if (!hIMC)
return;
if (CompFlag & GCS_RESULTSTR)
{
EDIT_GetResultStr(hIMC, es);
cursor = 0;
}
else
{
if (CompFlag & GCS_COMPSTR)
EDIT_GetCompositionStr(hIMC, CompFlag, es);
cursor = ImmGetCompositionStringW(hIMC, GCS_CURSORPOS, 0, 0);
}
ImmReleaseContext(hwnd, hIMC);
EDIT_SetCaretPos(es, es->selection_start + cursor, es->flags & EF_AFTER_WRAP);
}
/*********************************************************************
*
* WM_NCCREATE
*
* See also EDIT_WM_StyleChanged
*/
static LRESULT EDIT_WM_NCCreate(HWND hwnd, LPCREATESTRUCTW lpcs)
{
EDITSTATE *es;
UINT alloc_size;
TRACE("Creating edit control, style = %08x\n", lpcs->style);
if (!(es = heap_alloc_zero(sizeof(*es))))
return FALSE;
SetWindowLongPtrW( hwnd, 0, (LONG_PTR)es );
/*
* Note: since the EDITSTATE has not been fully initialized yet,
* we can't use any API calls that may send
* WM_XXX messages before WM_NCCREATE is completed.
*/
es->style = lpcs->style;
es->bEnableState = !(es->style & WS_DISABLED);
es->hwndSelf = hwnd;
/* Save parent, which will be notified by EN_* messages */
es->hwndParent = lpcs->hwndParent;
if (es->style & ES_COMBO)
es->hwndListBox = GetDlgItem(es->hwndParent, ID_CB_LISTBOX);
/* FIXME: should we handle changes to WS_EX_RIGHT style after creation? */
if (lpcs->dwExStyle & WS_EX_RIGHT) es->style |= ES_RIGHT;
/* Number overrides lowercase overrides uppercase (at least it
* does in Win95). However I'll bet that ES_NUMBER would be
* invalid under Win 3.1.
*/
if (es->style & ES_NUMBER) {
; /* do not override the ES_NUMBER */
} else if (es->style & ES_LOWERCASE) {
es->style &= ~ES_UPPERCASE;
}
if (es->style & ES_MULTILINE) {
es->buffer_limit = BUFLIMIT_INITIAL;
if (es->style & WS_VSCROLL)
es->style |= ES_AUTOVSCROLL;
if (es->style & WS_HSCROLL)
es->style |= ES_AUTOHSCROLL;
es->style &= ~ES_PASSWORD;
if ((es->style & ES_CENTER) || (es->style & ES_RIGHT)) {
/* Confirmed - RIGHT overrides CENTER */
if (es->style & ES_RIGHT)
es->style &= ~ES_CENTER;
es->style &= ~WS_HSCROLL;
es->style &= ~ES_AUTOHSCROLL;
}
} else {
es->buffer_limit = BUFLIMIT_INITIAL;
if ((es->style & ES_RIGHT) && (es->style & ES_CENTER))
es->style &= ~ES_CENTER;
es->style &= ~WS_HSCROLL;
es->style &= ~WS_VSCROLL;
if (es->style & ES_PASSWORD)
es->password_char = '*';
}
alloc_size = ROUND_TO_GROW((es->buffer_size + 1) * sizeof(WCHAR));
if(!(es->hloc32W = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
goto cleanup;
es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
if (!(es->undo_text = heap_alloc_zero((es->buffer_size + 1) * sizeof(WCHAR))))
goto cleanup;
es->undo_buffer_size = es->buffer_size;
if (es->style & ES_MULTILINE)
if (!(es->first_line_def = heap_alloc_zero(sizeof(LINEDEF))))
goto cleanup;
es->line_count = 1;
/*
* In Win95 look and feel, the WS_BORDER style is replaced by the
* WS_EX_CLIENTEDGE style for the edit control. This gives the edit
* control a nonclient area so we don't need to draw the border.
* If WS_BORDER without WS_EX_CLIENTEDGE is specified we shouldn't have
* a nonclient area and we should handle painting the border ourselves.
*
* When making modifications please ensure that the code still works
* for edit controls created directly with style 0x50800000, exStyle 0
* (which should have a single pixel border)
*/
if (lpcs->dwExStyle & WS_EX_CLIENTEDGE)
es->style &= ~WS_BORDER;
else if (es->style & WS_BORDER)
SetWindowLongW(hwnd, GWL_STYLE, es->style & ~WS_BORDER);
return TRUE;
cleanup:
SetWindowLongPtrW(es->hwndSelf, 0, 0);
EDIT_InvalidateUniscribeData(es);
heap_free(es->first_line_def);
heap_free(es->undo_text);
if (es->hloc32W) LocalFree(es->hloc32W);
heap_free(es->logAttr);
heap_free(es);
return FALSE;
}
/*********************************************************************
*
* WM_CREATE
*
*/
static LRESULT EDIT_WM_Create(EDITSTATE *es, const WCHAR *name)
{
RECT clientRect;
TRACE("%s\n", debugstr_w(name));
/*
* To initialize some final structure members, we call some helper
* functions. However, since the EDITSTATE is not consistent (i.e.
* not fully initialized), we should be very careful which
* functions can be called, and in what order.
*/
EDIT_WM_SetFont(es, 0, FALSE);
EDIT_EM_EmptyUndoBuffer(es);
/* We need to calculate the format rect
(applications may send EM_SETMARGINS before the control gets visible) */
GetClientRect(es->hwndSelf, &clientRect);
EDIT_SetRectNP(es, &clientRect);
if (name && *name)
{
EDIT_EM_ReplaceSel(es, FALSE, name, strlenW(name), FALSE, FALSE);
/* if we insert text to the editline, the text scrolls out
* of the window, as the caret is placed after the insert
* pos normally; thus we reset es->selection... to 0 and
* update caret
*/
es->selection_start = es->selection_end = 0;
/* Adobe Photoshop does NOT like this. and MSDN says that EN_CHANGE
* Messages are only to be sent when the USER does something to
* change the contents. So I am removing this EN_CHANGE
*
* EDIT_NOTIFY_PARENT(es, EN_CHANGE);
*/
EDIT_EM_ScrollCaret(es);
}
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
OpenThemeData(es->hwndSelf, WC_EDITW);
/* The rule seems to return 1 here for success */
/* Power Builder masked edit controls will crash */
/* if not. */
/* FIXME: is that in all cases so ? */
return 1;
}
/*********************************************************************
*
* WM_NCDESTROY
*
*/
static LRESULT EDIT_WM_NCDestroy(EDITSTATE *es)
{
LINEDEF *pc, *pp;
HTHEME theme;
theme = GetWindowTheme(es->hwndSelf);
CloseThemeData(theme);
/* The app can own the text buffer handle */
if (es->hloc32W && (es->hloc32W != es->hlocapp))
LocalFree(es->hloc32W);
EDIT_InvalidateUniscribeData(es);
pc = es->first_line_def;
while (pc)
{
pp = pc->next;
heap_free(pc);
pc = pp;
}
SetWindowLongPtrW( es->hwndSelf, 0, 0 );
heap_free(es->undo_text);
heap_free(es);
return 0;
}
static LRESULT CALLBACK EDIT_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
EDITSTATE *es = (EDITSTATE *)GetWindowLongPtrW(hwnd, 0);
HTHEME theme = GetWindowTheme(hwnd);
LRESULT result = 0;
RECT *rect;
TRACE("hwnd=%p msg=%#x wparam=%lx lparam=%lx\n", hwnd, msg, wParam, lParam);
if (!es && msg != WM_NCCREATE)
return DefWindowProcW(hwnd, msg, wParam, lParam);
if (es && (msg != WM_NCDESTROY))
EDIT_LockBuffer(es);
switch (msg)
{
case EM_GETSEL:
result = EDIT_EM_GetSel(es, (UINT *)wParam, (UINT *)lParam);
break;
case EM_SETSEL:
EDIT_EM_SetSel(es, wParam, lParam, FALSE);
EDIT_EM_ScrollCaret(es);
result = 1;
break;
case EM_GETRECT:
rect = (RECT *)lParam;
if (rect)
*rect = es->format_rect;
break;
case EM_SETRECT:
if ((es->style & ES_MULTILINE) && lParam)
{
EDIT_SetRectNP(es, (RECT *)lParam);
EDIT_UpdateText(es, NULL, TRUE);
}
break;
case EM_SETRECTNP:
if ((es->style & ES_MULTILINE) && lParam)
EDIT_SetRectNP(es, (LPRECT)lParam);
break;
case EM_SCROLL:
result = EDIT_EM_Scroll(es, (INT)wParam);
break;
case EM_LINESCROLL:
result = (LRESULT)EDIT_EM_LineScroll(es, (INT)wParam, (INT)lParam);
break;
case EM_SCROLLCARET:
EDIT_EM_ScrollCaret(es);
result = 1;
break;
case EM_GETMODIFY:
result = ((es->flags & EF_MODIFIED) != 0);
break;
case EM_SETMODIFY:
if (wParam)
es->flags |= EF_MODIFIED;
else
es->flags &= ~(EF_MODIFIED | EF_UPDATE); /* reset pending updates */
break;
case EM_GETLINECOUNT:
result = (es->style & ES_MULTILINE) ? es->line_count : 1;
break;
case EM_LINEINDEX:
result = (LRESULT)EDIT_EM_LineIndex(es, (INT)wParam);
break;
case EM_SETHANDLE:
EDIT_EM_SetHandle(es, (HLOCAL)wParam);
break;
case EM_GETHANDLE:
result = (LRESULT)EDIT_EM_GetHandle(es);
break;
case EM_GETTHUMB:
result = EDIT_EM_GetThumb(es);
break;
/* these messages missing from specs */
case 0x00bf:
case 0x00c0:
case 0x00c3:
case 0x00ca:
FIXME("undocumented message 0x%x, please report\n", msg);
result = DefWindowProcW(hwnd, msg, wParam, lParam);
break;
case EM_LINELENGTH:
result = (LRESULT)EDIT_EM_LineLength(es, (INT)wParam);
break;
case EM_REPLACESEL:
{
const WCHAR *textW = (const WCHAR *)lParam;
EDIT_EM_ReplaceSel(es, (BOOL)wParam, textW, strlenW(textW), TRUE, TRUE);
result = 1;
break;
}
case EM_GETLINE:
result = (LRESULT)EDIT_EM_GetLine(es, (INT)wParam, (LPWSTR)lParam);
break;
case EM_SETLIMITTEXT:
EDIT_EM_SetLimitText(es, wParam);
break;
case EM_CANUNDO:
result = (LRESULT)EDIT_EM_CanUndo(es);
break;
case EM_UNDO:
case WM_UNDO:
result = (LRESULT)EDIT_EM_Undo(es);
break;
case EM_FMTLINES:
result = (LRESULT)EDIT_EM_FmtLines(es, (BOOL)wParam);
break;
case EM_LINEFROMCHAR:
result = (LRESULT)EDIT_EM_LineFromChar(es, (INT)wParam);
break;
case EM_SETTABSTOPS:
result = (LRESULT)EDIT_EM_SetTabStops(es, (INT)wParam, (LPINT)lParam);
break;
case EM_SETPASSWORDCHAR:
EDIT_EM_SetPasswordChar(es, wParam);
break;
case EM_EMPTYUNDOBUFFER:
EDIT_EM_EmptyUndoBuffer(es);
break;
case EM_GETFIRSTVISIBLELINE:
result = (es->style & ES_MULTILINE) ? es->y_offset : es->x_offset;
break;
case EM_SETREADONLY:
{
DWORD old_style = es->style;
if (wParam)
{
SetWindowLongW(hwnd, GWL_STYLE, GetWindowLongW(hwnd, GWL_STYLE) | ES_READONLY);
es->style |= ES_READONLY;
}
else
{
SetWindowLongW(hwnd, GWL_STYLE, GetWindowLongW(hwnd, GWL_STYLE) & ~ES_READONLY);
es->style &= ~ES_READONLY;
}
if (old_style ^ es->style)
InvalidateRect(es->hwndSelf, NULL, TRUE);
result = 1;
break;
}
case EM_SETWORDBREAKPROC:
EDIT_EM_SetWordBreakProc(es, (void *)lParam);
result = 1;
break;
case EM_GETWORDBREAKPROC:
result = (LRESULT)es->word_break_proc;
break;
case EM_GETPASSWORDCHAR:
result = es->password_char;
break;
case EM_SETMARGINS:
EDIT_EM_SetMargins(es, (INT)wParam, LOWORD(lParam), HIWORD(lParam), TRUE);
break;
case EM_GETMARGINS:
result = MAKELONG(es->left_margin, es->right_margin);
break;
case EM_GETLIMITTEXT:
result = es->buffer_limit;
break;
case EM_POSFROMCHAR:
if ((INT)wParam >= get_text_length(es)) result = -1;
else result = EDIT_EM_PosFromChar(es, (INT)wParam, FALSE);
break;
case EM_CHARFROMPOS:
result = EDIT_EM_CharFromPos(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
break;
/* End of the EM_ messages which were in numerical order; what order
* are these in? vaguely alphabetical?
*/
case WM_NCCREATE:
result = EDIT_WM_NCCreate(hwnd, (LPCREATESTRUCTW)lParam);
break;
case WM_NCDESTROY:
result = EDIT_WM_NCDestroy(es);
es = NULL;
break;
case WM_GETDLGCODE:
result = DLGC_HASSETSEL | DLGC_WANTCHARS | DLGC_WANTARROWS;
if (es->style & ES_MULTILINE)
result |= DLGC_WANTALLKEYS;
if (lParam)
{
MSG *msg = (MSG *)lParam;
es->flags |= EF_DIALOGMODE;
if (msg->message == WM_KEYDOWN)
{
int vk = (int)msg->wParam;
if (es->hwndListBox)
{
if (vk == VK_RETURN || vk == VK_ESCAPE)
if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
result |= DLGC_WANTMESSAGE;
}
}
}
break;
case WM_IME_CHAR:
case WM_CHAR:
{
WCHAR charW = wParam;
if (es->hwndListBox)
{
if (charW == VK_RETURN || charW == VK_ESCAPE)
{
if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
SendMessageW(GetParent(hwnd), WM_KEYDOWN, charW, 0);
break;
}
}
result = EDIT_WM_Char(es, charW);
break;
}
case WM_UNICHAR:
if (wParam == UNICODE_NOCHAR) return TRUE;
if (wParam <= 0x000fffff)
{
if (wParam > 0xffff) /* convert to surrogates */
{
wParam -= 0x10000;
EDIT_WM_Char(es, (wParam >> 10) + 0xd800);
EDIT_WM_Char(es, (wParam & 0x03ff) + 0xdc00);
}
else
EDIT_WM_Char(es, wParam);
}
return 0;
case WM_CLEAR:
EDIT_WM_Clear(es);
break;
case WM_CONTEXTMENU:
EDIT_WM_ContextMenu(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
break;
case WM_COPY:
EDIT_WM_Copy(es);
break;
case WM_CREATE:
result = EDIT_WM_Create(es, ((LPCREATESTRUCTW)lParam)->lpszName);
break;
case WM_CUT:
EDIT_WM_Cut(es);
break;
case WM_ENABLE:
es->bEnableState = (BOOL) wParam;
EDIT_UpdateText(es, NULL, TRUE);
if (theme)
RedrawWindow(hwnd, NULL, NULL, RDW_FRAME | RDW_INVALIDATE | RDW_UPDATENOW);
break;
case WM_ERASEBKGND:
/* we do the proper erase in EDIT_WM_Paint */
result = 1;
break;
case WM_GETFONT:
result = (LRESULT)es->font;
break;
case WM_GETTEXT:
result = (LRESULT)EDIT_WM_GetText(es, (INT)wParam, (LPWSTR)lParam);
break;
case WM_GETTEXTLENGTH:
result = get_text_length(es);
break;
case WM_HSCROLL:
result = EDIT_WM_HScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
break;
case WM_KEYDOWN:
result = EDIT_WM_KeyDown(es, (INT)wParam);
break;
case WM_KILLFOCUS:
result = EDIT_WM_KillFocus(theme, es);
break;
case WM_LBUTTONDBLCLK:
result = EDIT_WM_LButtonDblClk(es);
break;
case WM_LBUTTONDOWN:
result = EDIT_WM_LButtonDown(es, wParam, (short)LOWORD(lParam), (short)HIWORD(lParam));
break;
case WM_LBUTTONUP:
result = EDIT_WM_LButtonUp(es);
break;
case WM_MBUTTONDOWN:
result = EDIT_WM_MButtonDown(es);
break;
case WM_MOUSEMOVE:
result = EDIT_WM_MouseMove(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
break;
case WM_PRINTCLIENT:
case WM_PAINT:
EDIT_WM_Paint(es, (HDC)wParam);
break;
case WM_NCPAINT:
EDIT_WM_NCPaint(hwnd, (HRGN)wParam);
break;
case WM_PASTE:
EDIT_WM_Paste(es);
break;
case WM_SETFOCUS:
EDIT_WM_SetFocus(theme, es);
break;
case WM_SETFONT:
EDIT_WM_SetFont(es, (HFONT)wParam, LOWORD(lParam) != 0);
break;
case WM_SETREDRAW:
/* FIXME: actually set an internal flag and behave accordingly */
break;
case WM_SETTEXT:
EDIT_WM_SetText(es, (const WCHAR *)lParam);
result = TRUE;
break;
case WM_SIZE:
EDIT_WM_Size(es, (UINT)wParam);
break;
case WM_STYLECHANGED:
result = EDIT_WM_StyleChanged(es, wParam, (const STYLESTRUCT *)lParam);
break;
case WM_STYLECHANGING:
result = 0; /* See EDIT_WM_StyleChanged */
break;
case WM_SYSKEYDOWN:
result = EDIT_WM_SysKeyDown(es, (INT)wParam, (DWORD)lParam);
break;
case WM_TIMER:
EDIT_WM_Timer(es);
break;
case WM_VSCROLL:
result = EDIT_WM_VScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
break;
case WM_MOUSEWHEEL:
{
int wheelDelta;
UINT pulScrollLines = 3;
SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
if (wParam & (MK_SHIFT | MK_CONTROL))
{
result = DefWindowProcW(hwnd, msg, wParam, lParam);
break;
}
wheelDelta = GET_WHEEL_DELTA_WPARAM(wParam);
/* if scrolling changes direction, ignore left overs */
if ((wheelDelta < 0 && es->wheelDeltaRemainder < 0) ||
(wheelDelta > 0 && es->wheelDeltaRemainder > 0))
es->wheelDeltaRemainder += wheelDelta;
else
es->wheelDeltaRemainder = wheelDelta;
if (es->wheelDeltaRemainder && pulScrollLines)
{
int cLineScroll;
pulScrollLines = (int) min((UINT) es->line_count, pulScrollLines);
cLineScroll = pulScrollLines * (float)es->wheelDeltaRemainder / WHEEL_DELTA;
es->wheelDeltaRemainder -= WHEEL_DELTA * cLineScroll / (int)pulScrollLines;
result = EDIT_EM_LineScroll(es, 0, -cLineScroll);
}
break;
}
/* IME messages to make the edit control IME aware */
case WM_IME_SETCONTEXT:
break;
case WM_IME_STARTCOMPOSITION:
es->composition_start = es->selection_end;
es->composition_len = 0;
break;
case WM_IME_COMPOSITION:
EDIT_ImeComposition(hwnd, lParam, es);
break;
case WM_IME_ENDCOMPOSITION:
if (es->composition_len > 0)
{
EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
es->selection_end = es->selection_start;
es->composition_len= 0;
}
break;
case WM_IME_COMPOSITIONFULL:
break;
case WM_IME_SELECT:
break;
case WM_IME_CONTROL:
break;
case WM_IME_REQUEST:
switch (wParam)
{
case IMR_QUERYCHARPOSITION:
{
IMECHARPOSITION *chpos = (IMECHARPOSITION *)lParam;
LRESULT pos;
pos = EDIT_EM_PosFromChar(es, es->selection_start + chpos->dwCharPos, FALSE);
chpos->pt.x = LOWORD(pos);
chpos->pt.y = HIWORD(pos);
chpos->cLineHeight = es->line_height;
chpos->rcDocument = es->format_rect;
MapWindowPoints(hwnd, 0, &chpos->pt, 1);
MapWindowPoints(hwnd, 0, (POINT*)&chpos->rcDocument, 2);
result = 1;
break;
}
}
break;
case WM_THEMECHANGED:
CloseThemeData (theme);
OpenThemeData(hwnd, WC_EDITW);
break;
default:
result = DefWindowProcW(hwnd, msg, wParam, lParam);
break;
}
if (IsWindow(hwnd) && es && msg != EM_GETHANDLE)
EDIT_UnlockBuffer(es, FALSE);
TRACE("hwnd=%p msg=%x -- 0x%08lx\n", hwnd, msg, result);
return result;
}
void EDIT_Register(void)
{
WNDCLASSW wndClass;
memset(&wndClass, 0, sizeof(wndClass));
wndClass.style = CS_PARENTDC | CS_GLOBALCLASS | CS_DBLCLKS;
wndClass.lpfnWndProc = EDIT_WindowProc;
wndClass.cbClsExtra = 0;
#ifdef __i386__
wndClass.cbWndExtra = sizeof(EDITSTATE *) + sizeof(WORD);
#else
wndClass.cbWndExtra = sizeof(EDITSTATE *);
#endif
wndClass.hCursor = LoadCursorW(0, (LPWSTR)IDC_IBEAM);
wndClass.hbrBackground = NULL;
wndClass.lpszClassName = WC_EDITW;
RegisterClassW(&wndClass);
}
#ifdef __REACTOS__
void EDIT_Unregister(void)
{
UnregisterClassW(WC_EDITW, NULL);
}
#endif
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