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470 lines
13 KiB
C
470 lines
13 KiB
C
/* ------------- listbox.c ------------ */
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#include "dflat.h"
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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static int ExtendSelections(DFWINDOW, int, int);
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static void TestExtended(DFWINDOW, PARAM);
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static void ClearAllSelections(DFWINDOW);
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static void SetSelection(DFWINDOW, int);
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static void FlipSelection(DFWINDOW, int);
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static void ClearSelection(DFWINDOW, int);
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#else
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#define TestExtended(w,p) /**/
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#endif
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static void ChangeSelection(DFWINDOW, int, int);
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static void WriteSelection(DFWINDOW, int, int, DFRECT *);
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static BOOL SelectionInWindow(DFWINDOW, int);
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static int py = -1; /* the previous y mouse coordinate */
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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/* --------- SHIFT_F8 Key ------------ */
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static void AddModeKey(DFWINDOW wnd)
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{
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if (isMultiLine(wnd)) {
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wnd->AddMode ^= TRUE;
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DfSendMessage(GetParent(wnd), ADDSTATUS,
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wnd->AddMode ? ((PARAM) "Add Mode") : 0, 0);
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}
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}
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#endif
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/* --------- UP (Up Arrow) Key ------------ */
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static void UpKey(DFWINDOW wnd, PARAM p2)
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{
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if (wnd->selection > 0) {
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if (wnd->selection == wnd->wtop) {
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BaseWndProc(LISTBOX, wnd, KEYBOARD, UP, p2);
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DfPostMessage(wnd, LB_SELECTION, wnd->selection-1,
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isMultiLine(wnd) ? p2 : FALSE);
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}
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else {
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int newsel = wnd->selection-1;
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if (wnd->wlines == ClientHeight(wnd))
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while (*TextLine(wnd, newsel) == LINE)
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--newsel;
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DfPostMessage(wnd, LB_SELECTION, newsel,
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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isMultiLine(wnd) ? p2 :
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#endif
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FALSE);
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}
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}
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}
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/* --------- DN (Down Arrow) Key ------------ */
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static void DnKey(DFWINDOW wnd, PARAM p2)
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{
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if (wnd->selection < wnd->wlines-1) {
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if (wnd->selection == wnd->wtop+ClientHeight(wnd)-1) {
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BaseWndProc(LISTBOX, wnd, KEYBOARD, DN, p2);
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DfPostMessage(wnd, LB_SELECTION, wnd->selection+1,
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isMultiLine(wnd) ? p2 : FALSE);
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}
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else {
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int newsel = wnd->selection+1;
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if (wnd->wlines == ClientHeight(wnd))
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while (*TextLine(wnd, newsel) == LINE)
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newsel++;
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DfPostMessage(wnd, LB_SELECTION, newsel,
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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isMultiLine(wnd) ? p2 :
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#endif
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FALSE);
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}
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}
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}
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/* --------- HOME and PGUP Keys ------------ */
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static void HomePgUpKey(DFWINDOW wnd, PARAM p1, PARAM p2)
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{
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BaseWndProc(LISTBOX, wnd, KEYBOARD, p1, p2);
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DfPostMessage(wnd, LB_SELECTION, wnd->wtop,
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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isMultiLine(wnd) ? p2 :
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#endif
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FALSE);
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}
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/* --------- END and PGDN Keys ------------ */
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static void EndPgDnKey(DFWINDOW wnd, PARAM p1, PARAM p2)
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{
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int bot;
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BaseWndProc(LISTBOX, wnd, KEYBOARD, p1, p2);
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bot = wnd->wtop+ClientHeight(wnd)-1;
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if (bot > wnd->wlines-1)
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bot = wnd->wlines-1;
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DfPostMessage(wnd, LB_SELECTION, bot,
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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isMultiLine(wnd) ? p2 :
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#endif
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FALSE);
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}
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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/* --------- Space Bar Key ------------ */
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static void SpacebarKey(DFWINDOW wnd, PARAM p2)
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{
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if (isMultiLine(wnd)) {
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int sel = DfSendMessage(wnd, LB_CURRENTSELECTION, 0, 0);
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if (sel != -1) {
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if (wnd->AddMode)
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FlipSelection(wnd, sel);
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if (ItemSelected(wnd, sel)) {
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if (!((int) p2 & (LEFTSHIFT | RIGHTSHIFT)))
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wnd->AnchorPoint = sel;
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ExtendSelections(wnd, sel, (int) p2);
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}
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else
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wnd->AnchorPoint = -1;
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DfSendMessage(wnd, PAINT, 0, 0);
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}
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}
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}
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#endif
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/* --------- Enter ('\r') Key ------------ */
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static void EnterKey(DFWINDOW wnd)
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{
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if (wnd->selection != -1) {
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DfSendMessage(wnd, LB_SELECTION, wnd->selection, TRUE);
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DfSendMessage(wnd, LB_CHOOSE, wnd->selection, 0);
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}
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}
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/* --------- All Other Key Presses ------------ */
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static void KeyPress(DFWINDOW wnd, PARAM p1, PARAM p2)
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{
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int sel = wnd->selection+1;
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while (sel < wnd->wlines) {
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char *cp = TextLine(wnd, sel);
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if (cp == NULL)
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break;
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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if (isMultiLine(wnd))
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cp++;
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#endif
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/* --- special for directory list box --- */
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if (*cp == '[')
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cp++;
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if (tolower(*cp) == (int)p1) {
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DfSendMessage(wnd, LB_SELECTION, sel,
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isMultiLine(wnd) ? p2 : FALSE);
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if (!SelectionInWindow(wnd, sel)) {
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wnd->wtop = sel-ClientHeight(wnd)+1;
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DfSendMessage(wnd, PAINT, 0, 0);
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}
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break;
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}
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sel++;
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}
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}
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/* --------- KEYBOARD Message ------------ */
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static int KeyboardMsg(DFWINDOW wnd, PARAM p1, PARAM p2)
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{
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switch ((int) p1) {
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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case SHIFT_F8:
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AddModeKey(wnd);
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return TRUE;
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#endif
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case UP:
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TestExtended(wnd, p2);
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UpKey(wnd, p2);
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return TRUE;
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case DN:
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TestExtended(wnd, p2);
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DnKey(wnd, p2);
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return TRUE;
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case PGUP:
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case HOME:
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TestExtended(wnd, p2);
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HomePgUpKey(wnd, p1, p2);
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return TRUE;
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case PGDN:
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case END:
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TestExtended(wnd, p2);
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EndPgDnKey(wnd, p1, p2);
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return TRUE;
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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case ' ':
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SpacebarKey(wnd, p2);
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break;
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#endif
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case '\r':
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EnterKey(wnd);
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return TRUE;
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default:
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KeyPress(wnd, p1, p2);
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break;
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}
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return FALSE;
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}
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/* ------- LEFT_BUTTON Message -------- */
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static int LeftButtonMsg(DFWINDOW wnd, PARAM p1, PARAM p2)
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{
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int my = (int) p2 - GetTop(wnd);
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if (my >= wnd->wlines-wnd->wtop)
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my = wnd->wlines - wnd->wtop;
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if (!InsideRect(p1, p2, ClientRect(wnd)))
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return FALSE;
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if (wnd->wlines && my != py) {
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int sel = wnd->wtop+my-1;
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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int sh = getshift();
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if (!(sh & (LEFTSHIFT | RIGHTSHIFT))) {
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if (!(sh & CTRLKEY))
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ClearAllSelections(wnd);
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wnd->AnchorPoint = sel;
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DfSendMessage(wnd, PAINT, 0, 0);
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}
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#endif
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DfSendMessage(wnd, LB_SELECTION, sel, TRUE);
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py = my;
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}
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return TRUE;
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}
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/* ------------- DOUBLE_CLICK Message ------------ */
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static int DoubleClickMsg(DFWINDOW wnd, PARAM p1, PARAM p2)
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{
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if (WindowMoving || WindowSizing)
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return FALSE;
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if (wnd->wlines) {
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DFRECT rc = ClientRect(wnd);
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BaseWndProc(LISTBOX, wnd, DOUBLE_CLICK, p1, p2);
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if (InsideRect(p1, p2, rc))
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DfSendMessage(wnd, LB_CHOOSE, wnd->selection, 0);
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}
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return TRUE;
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}
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/* ------------ ADDTEXT Message -------------- */
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static int AddTextMsg(DFWINDOW wnd, PARAM p1, PARAM p2)
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{
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int rtn = BaseWndProc(LISTBOX, wnd, ADDTEXT, p1, p2);
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if (wnd->selection == -1)
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DfSendMessage(wnd, LB_SETSELECTION, 0, 0);
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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if (*(char *)p1 == LISTSELECTOR)
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wnd->SelectCount++;
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#endif
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return rtn;
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}
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/* --------- GETTEXT Message ------------ */
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static void GetTextMsg(DFWINDOW wnd, PARAM p1, PARAM p2)
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{
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if ((int)p2 != -1) {
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char *cp1 = (char *)p1;
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char *cp2 = TextLine(wnd, (int)p2);
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while (cp2 && *cp2 && *cp2 != '\n')
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*cp1++ = *cp2++;
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*cp1 = '\0';
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}
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}
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/* --------- LISTBOX Window Processing Module ------------ */
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int ListBoxProc(DFWINDOW wnd, DFMESSAGE msg, PARAM p1, PARAM p2)
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{
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switch (msg) {
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case CREATE_WINDOW:
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BaseWndProc(LISTBOX, wnd, msg, p1, p2);
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wnd->selection = -1;
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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wnd->AnchorPoint = -1;
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#endif
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return TRUE;
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case KEYBOARD:
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if (WindowMoving || WindowSizing)
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break;
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if (KeyboardMsg(wnd, p1, p2))
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return TRUE;
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break;
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case LEFT_BUTTON:
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if (LeftButtonMsg(wnd, p1, p2) == TRUE)
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return TRUE;
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break;
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case DOUBLE_CLICK:
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if (DoubleClickMsg(wnd, p1, p2))
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return TRUE;
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break;
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case DFM_BUTTON_RELEASED:
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if (WindowMoving || WindowSizing || VSliding)
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break;
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py = -1;
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return TRUE;
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case ADDTEXT:
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return AddTextMsg(wnd, p1, p2);
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case DFM_LB_GETTEXT:
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GetTextMsg(wnd, p1, p2);
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return TRUE;
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case CLEARTEXT:
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wnd->selection = -1;
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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wnd->AnchorPoint = -1;
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#endif
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wnd->SelectCount = 0;
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break;
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case PAINT:
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BaseWndProc(LISTBOX, wnd, msg, p1, p2);
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WriteSelection(wnd, wnd->selection, TRUE, (DFRECT *)p1);
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return TRUE;
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case SCROLL:
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case HORIZSCROLL:
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case SCROLLPAGE:
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case HORIZPAGE:
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case SCROLLDOC:
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BaseWndProc(LISTBOX, wnd, msg, p1, p2);
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WriteSelection(wnd,wnd->selection,TRUE,NULL);
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return TRUE;
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case LB_CHOOSE:
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DfSendMessage(GetParent(wnd), LB_CHOOSE, p1, p2);
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return TRUE;
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case LB_SELECTION:
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ChangeSelection(wnd, (int) p1, (int) p2);
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DfSendMessage(GetParent(wnd), LB_SELECTION,
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wnd->selection, 0);
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return TRUE;
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case LB_CURRENTSELECTION:
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return wnd->selection;
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case LB_SETSELECTION:
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ChangeSelection(wnd, (int) p1, 0);
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return TRUE;
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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case CLOSE_WINDOW:
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if (isMultiLine(wnd) && wnd->AddMode) {
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wnd->AddMode = FALSE;
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DfSendMessage(GetParent(wnd), ADDSTATUS, 0, 0);
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}
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break;
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#endif
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default:
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break;
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}
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return BaseWndProc(LISTBOX, wnd, msg, p1, p2);
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}
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static BOOL SelectionInWindow(DFWINDOW wnd, int sel)
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{
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return (wnd->wlines && sel >= wnd->wtop &&
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sel < wnd->wtop+ClientHeight(wnd));
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}
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static void WriteSelection(DFWINDOW wnd, int sel,
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int reverse, DFRECT *rc)
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{
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if (isVisible(wnd))
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if (SelectionInWindow(wnd, sel))
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WriteTextLine(wnd, rc, sel, reverse);
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}
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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/* ----- Test for extended selections in the listbox ----- */
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static void TestExtended(DFWINDOW wnd, PARAM p2)
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{
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if (isMultiLine(wnd) && !wnd->AddMode &&
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!((int) p2 & (LEFTSHIFT | RIGHTSHIFT))) {
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if (wnd->SelectCount > 1) {
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ClearAllSelections(wnd);
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DfSendMessage(wnd, PAINT, 0, 0);
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}
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}
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}
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/* ----- Clear selections in the listbox ----- */
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static void ClearAllSelections(DFWINDOW wnd)
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{
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if (isMultiLine(wnd) && wnd->SelectCount > 0) {
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int sel;
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for (sel = 0; sel < wnd->wlines; sel++)
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ClearSelection(wnd, sel);
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}
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}
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/* ----- Invert a selection in the listbox ----- */
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static void FlipSelection(DFWINDOW wnd, int sel)
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{
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if (isMultiLine(wnd)) {
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if (ItemSelected(wnd, sel))
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ClearSelection(wnd, sel);
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else
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SetSelection(wnd, sel);
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}
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}
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static int ExtendSelections(DFWINDOW wnd, int sel, int shift)
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{
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if (shift & (LEFTSHIFT | RIGHTSHIFT) &&
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wnd->AnchorPoint != -1) {
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int i = sel;
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int j = wnd->AnchorPoint;
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int rtn;
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if (j > i)
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swap(i,j);
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rtn = i - j;
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while (j <= i)
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SetSelection(wnd, j++);
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return rtn;
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}
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return 0;
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}
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static void SetSelection(DFWINDOW wnd, int sel)
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{
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if (isMultiLine(wnd) && !ItemSelected(wnd, sel)) {
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char *lp = TextLine(wnd, sel);
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*lp = LISTSELECTOR;
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wnd->SelectCount++;
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}
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}
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static void ClearSelection(DFWINDOW wnd, int sel)
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{
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if (isMultiLine(wnd) && ItemSelected(wnd, sel)) {
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char *lp = TextLine(wnd, sel);
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*lp = ' ';
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--wnd->SelectCount;
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}
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}
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BOOL ItemSelected(DFWINDOW wnd, int sel)
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{
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if (sel != -1 && isMultiLine(wnd) && sel < wnd->wlines) {
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char *cp = TextLine(wnd, sel);
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return (int)((*cp) & 255) == LISTSELECTOR;
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}
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return FALSE;
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}
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#endif
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static void ChangeSelection(DFWINDOW wnd,int sel,int shift)
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{
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if (sel != wnd->selection) {
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#ifdef INCLUDE_EXTENDEDSELECTIONS
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if (isMultiLine(wnd)) {
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int sels;
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if (!wnd->AddMode)
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ClearAllSelections(wnd);
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sels = ExtendSelections(wnd, sel, shift);
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if (sels > 1)
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DfSendMessage(wnd, PAINT, 0, 0);
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if (sels == 0 && !wnd->AddMode) {
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ClearSelection(wnd, wnd->selection);
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SetSelection(wnd, sel);
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wnd->AnchorPoint = sel;
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}
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}
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#endif
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WriteSelection(wnd, wnd->selection, FALSE, NULL);
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wnd->selection = sel;
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WriteSelection(wnd, sel, TRUE, NULL);
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}
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}
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/* EOF */
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