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https://github.com/reactos/reactos.git
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1756 lines
49 KiB
C
1756 lines
49 KiB
C
/*
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* ReactOS User32 Library
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* - ScrollBar control
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*
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* Copyright 2001 Casper S. Hornstrup
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* Copyright 2003 Thomas Weidenmueller
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* Copyright 2003 Filip Navara
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*
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* Based on Wine code.
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*
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* Copyright 1993 Martin Ayotte
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* Copyright 1994, 1996 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <user32.h>
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WINE_DEFAULT_DEBUG_CHANNEL(scrollbar);
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/* Definitions for scrollbar hit testing [See SCROLLBARINFO in MSDN] */
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#define SCROLL_NOWHERE 0x00 /* Outside the scroll bar */
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#define SCROLL_TOP_ARROW 0x01 /* Top or left arrow */
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#define SCROLL_TOP_RECT 0x02 /* Rectangle between the top arrow and the thumb */
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#define SCROLL_THUMB 0x03 /* Thumb rectangle */
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#define SCROLL_BOTTOM_RECT 0x04 /* Rectangle between the thumb and the bottom arrow */
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#define SCROLL_BOTTOM_ARROW 0x05 /* Bottom or right arrow */
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#define SCROLL_FIRST_DELAY 200 /* Delay (in ms) before first repetition when
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holding the button down */
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#define SCROLL_REPEAT_DELAY 50 /* Delay (in ms) between scroll repetitions */
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#define SCROLL_TIMER 0 /* Scroll timer id */
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/* Minimum size of the rectangle between the arrows */
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#define SCROLL_MIN_RECT 4
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/* Minimum size of the thumb in pixels */
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#define SCROLL_MIN_THUMB 6
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/* Overlap between arrows and thumb */
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#define SCROLL_ARROW_THUMB_OVERLAP 0
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/* Thumb-tracking info */
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static HWND ScrollTrackingWin = 0;
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static INT ScrollTrackingBar = 0;
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static INT ScrollTrackingPos = 0;
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static INT ScrollTrackingVal = 0;
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/* Hit test code of the last button-down event */
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static DWORD ScrollTrackHitTest = SCROLL_NOWHERE;
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static BOOL ScrollTrackVertical;
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/* Is the moving thumb being displayed? */
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static BOOL ScrollMovingThumb = FALSE;
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HBRUSH DefWndControlColor(HDC hDC, UINT ctlType);
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UINT_PTR WINAPI SetSystemTimer(HWND,UINT_PTR,UINT,TIMERPROC);
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BOOL WINAPI KillSystemTimer(HWND,UINT_PTR);
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/*********************************************************************
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* scrollbar class descriptor
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*/
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const struct builtin_class_descr SCROLL_builtin_class =
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{
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L"ScrollBar", /* name */
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CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW | CS_PARENTDC, /* style */
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ScrollBarWndProcA, /* procA */
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ScrollBarWndProcW, /* procW */
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sizeof(SBWND)-sizeof(WND), /* extra */
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IDC_ARROW, /* cursor */
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0 /* brush */
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};
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/* PRIVATE FUNCTIONS **********************************************************/
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static PSBDATA
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IntGetSBData(PWND pwnd, INT Bar)
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{
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PSBWND pSBWnd;
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PSBINFO pSBInfo;
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pSBInfo = DesktopPtrToUser(pwnd->pSBInfo);
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switch (Bar)
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{
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case SB_HORZ:
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return &pSBInfo->Horz;
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case SB_VERT:
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return &pSBInfo->Vert;
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case SB_CTL:
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if ( pwnd->cbwndExtra < (sizeof(SBWND)-sizeof(WND)) )
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{
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ERR("IntGetSBData Wrong Extra bytes for CTL Scrollbar!\n");
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return 0;
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}
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pSBWnd = (PSBWND)pwnd;
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return (PSBDATA)&pSBWnd->SBCalc;
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default:
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ERR("IntGetSBData Bad Bar!\n");
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}
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return NULL;
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}
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static void
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IntDrawScrollInterior(HWND hWnd, HDC hDC, INT nBar, BOOL Vertical,
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PSCROLLBARINFO ScrollBarInfo)
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{
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INT ThumbSize = ScrollBarInfo->xyThumbBottom - ScrollBarInfo->xyThumbTop;
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INT ThumbTop = ScrollBarInfo->xyThumbTop;
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RECT Rect;
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HBRUSH hSaveBrush, hBrush;
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BOOL TopSelected = FALSE, BottomSelected = FALSE;
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if (ScrollBarInfo->rgstate[SCROLL_TOP_RECT] & STATE_SYSTEM_PRESSED)
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TopSelected = TRUE;
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if (ScrollBarInfo->rgstate[SCROLL_BOTTOM_RECT] & STATE_SYSTEM_PRESSED)
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BottomSelected = TRUE;
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/*
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* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
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* The window-owned scrollbars need to call DefWndControlColor
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* to correctly setup default scrollbar colors
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*/
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if (nBar == SB_CTL)
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{
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hBrush = GetControlBrush( hWnd, hDC, WM_CTLCOLORSCROLLBAR);
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if (!hBrush)
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hBrush = GetSysColorBrush(COLOR_SCROLLBAR);
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}
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else
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{
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hBrush = DefWndControlColor(hDC, CTLCOLOR_SCROLLBAR);
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}
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hSaveBrush = SelectObject(hDC, hBrush);
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/* Calculate the scroll rectangle */
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if (Vertical)
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{
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Rect.top = ScrollBarInfo->rcScrollBar.top + ScrollBarInfo->dxyLineButton;
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Rect.bottom = ScrollBarInfo->rcScrollBar.bottom - ScrollBarInfo->dxyLineButton;
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Rect.left = ScrollBarInfo->rcScrollBar.left;
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Rect.right = ScrollBarInfo->rcScrollBar.right;
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}
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else
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{
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Rect.top = ScrollBarInfo->rcScrollBar.top;
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Rect.bottom = ScrollBarInfo->rcScrollBar.bottom;
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Rect.left = ScrollBarInfo->rcScrollBar.left + ScrollBarInfo->dxyLineButton;
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Rect.right = ScrollBarInfo->rcScrollBar.right - ScrollBarInfo->dxyLineButton;
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}
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/* Draw the scroll rectangles and thumb */
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if (!ScrollBarInfo->xyThumbBottom)
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{
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PatBlt(hDC, Rect.left, Rect.top, Rect.right - Rect.left,
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Rect.bottom - Rect.top, PATCOPY);
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/* Cleanup and return */
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SelectObject(hDC, hSaveBrush);
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return;
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}
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ThumbTop -= ScrollBarInfo->dxyLineButton;
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if (ScrollBarInfo->dxyLineButton)
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{
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if (Vertical)
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{
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if (ThumbSize)
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{
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PatBlt(hDC, Rect.left, Rect.top, Rect.right - Rect.left,
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ThumbTop, TopSelected ? BLACKNESS : PATCOPY);
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Rect.top += ThumbTop;
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PatBlt(hDC, Rect.left, Rect.top + ThumbSize, Rect.right - Rect.left,
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Rect.bottom - Rect.top - ThumbSize, BottomSelected ? BLACKNESS : PATCOPY);
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Rect.bottom = Rect.top + ThumbSize;
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}
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else
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{
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if (ThumbTop)
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{
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PatBlt(hDC, Rect.left, ScrollBarInfo->dxyLineButton,
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Rect.right - Rect.left, Rect.bottom - Rect.top, PATCOPY);
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}
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}
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}
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else
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{
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if (ThumbSize)
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{
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PatBlt(hDC, Rect.left, Rect.top, ThumbTop,
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Rect.bottom - Rect.top, TopSelected ? BLACKNESS : PATCOPY);
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Rect.left += ThumbTop;
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PatBlt(hDC, Rect.left + ThumbSize, Rect.top,
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Rect.right - Rect.left - ThumbSize, Rect.bottom - Rect.top,
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BottomSelected ? BLACKNESS : PATCOPY);
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Rect.right = Rect.left + ThumbSize;
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}
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else
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{
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if (ThumbTop)
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{
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PatBlt(hDC, ScrollBarInfo->dxyLineButton, Rect.top,
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Rect.right - Rect.left, Rect.bottom - Rect.top, PATCOPY);
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}
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}
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}
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}
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/* Draw the thumb */
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if (ThumbSize)
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DrawEdge(hDC, &Rect, EDGE_RAISED, BF_RECT | BF_MIDDLE);
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/* Cleanup */
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SelectObject(hDC, hSaveBrush);
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}
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static VOID FASTCALL
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IntDrawScrollArrows(HDC hDC, PSCROLLBARINFO ScrollBarInfo, BOOL Vertical)
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{
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RECT RectLT, RectRB;
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INT ScrollDirFlagLT, ScrollDirFlagRB;
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RectLT = RectRB = ScrollBarInfo->rcScrollBar;
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if (Vertical)
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{
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ScrollDirFlagLT = DFCS_SCROLLUP;
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ScrollDirFlagRB = DFCS_SCROLLDOWN;
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RectLT.bottom = RectLT.top + ScrollBarInfo->dxyLineButton;
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RectRB.top = RectRB.bottom - ScrollBarInfo->dxyLineButton;
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}
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else
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{
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ScrollDirFlagLT = DFCS_SCROLLLEFT;
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ScrollDirFlagRB = DFCS_SCROLLRIGHT;
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RectLT.right = RectLT.left + ScrollBarInfo->dxyLineButton;
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RectRB.left = RectRB.right - ScrollBarInfo->dxyLineButton;
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}
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if (ScrollBarInfo->rgstate[SCROLL_TOP_ARROW] & STATE_SYSTEM_PRESSED)
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{
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ScrollDirFlagLT |= DFCS_PUSHED | DFCS_FLAT;
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}
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if (ScrollBarInfo->rgstate[SCROLL_TOP_ARROW] & STATE_SYSTEM_UNAVAILABLE)
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{
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ScrollDirFlagLT |= DFCS_INACTIVE;
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}
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if (ScrollBarInfo->rgstate[SCROLL_BOTTOM_ARROW] & STATE_SYSTEM_PRESSED)
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{
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ScrollDirFlagRB |= DFCS_PUSHED | DFCS_FLAT;
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}
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if (ScrollBarInfo->rgstate[SCROLL_BOTTOM_ARROW] & STATE_SYSTEM_UNAVAILABLE)
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{
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ScrollDirFlagRB |= DFCS_INACTIVE;
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}
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DrawFrameControl(hDC, &RectLT, DFC_SCROLL, ScrollDirFlagLT);
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DrawFrameControl(hDC, &RectRB, DFC_SCROLL, ScrollDirFlagRB);
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}
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static VOID FASTCALL
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IntScrollDrawMovingThumb(HDC Dc, PSCROLLBARINFO ScrollBarInfo, BOOL Vertical)
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{
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INT Pos = ScrollTrackingPos;
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INT MaxSize;
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INT OldTop;
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if (Vertical)
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MaxSize = ScrollBarInfo->rcScrollBar.bottom - ScrollBarInfo->rcScrollBar.top;
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else
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MaxSize = ScrollBarInfo->rcScrollBar.right - ScrollBarInfo->rcScrollBar.left;
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MaxSize -= ScrollBarInfo->dxyLineButton + ScrollBarInfo->xyThumbBottom - ScrollBarInfo->xyThumbTop;
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if (Pos < ScrollBarInfo->dxyLineButton)
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Pos = ScrollBarInfo->dxyLineButton;
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else if (MaxSize < Pos)
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Pos = MaxSize;
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OldTop = ScrollBarInfo->xyThumbTop;
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ScrollBarInfo->xyThumbBottom = Pos + ScrollBarInfo->xyThumbBottom - ScrollBarInfo->xyThumbTop;
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ScrollBarInfo->xyThumbTop = Pos;
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IntDrawScrollInterior(ScrollTrackingWin, Dc, ScrollTrackingBar, Vertical, ScrollBarInfo);
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ScrollBarInfo->xyThumbBottom = OldTop + ScrollBarInfo->xyThumbBottom - ScrollBarInfo->xyThumbTop;
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ScrollBarInfo->xyThumbTop = OldTop;
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ScrollMovingThumb = !ScrollMovingThumb;
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}
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static LONG FASTCALL
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IntScrollGetObjectId(INT SBType)
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{
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if (SBType == SB_VERT)
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return OBJID_VSCROLL;
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if (SBType == SB_HORZ)
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return OBJID_HSCROLL;
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return OBJID_CLIENT;
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}
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static BOOL FASTCALL
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IntGetScrollBarInfo(HWND Wnd, INT Bar, PSCROLLBARINFO ScrollBarInfo)
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{
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ScrollBarInfo->cbSize = sizeof(SCROLLBARINFO);
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return NtUserGetScrollBarInfo(Wnd, IntScrollGetObjectId(Bar), ScrollBarInfo);
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}
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static VOID FASTCALL
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IntUpdateScrollArrows(HWND Wnd, HDC hDC, PSCROLLBARINFO ScrollBarInfo,
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SETSCROLLBARINFO *info, INT SBType, INT Arrow,
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BOOL Vertical, BOOL Pressed)
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{
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if (Pressed)
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{
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ScrollBarInfo->rgstate[Arrow] |= STATE_SYSTEM_PRESSED;
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}
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else
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{
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ScrollBarInfo->rgstate[Arrow] &= ~STATE_SYSTEM_PRESSED;
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}
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/* Update arrow state */
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info->rgstate[Arrow] = ScrollBarInfo->rgstate[Arrow];
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NtUserSetScrollBarInfo(Wnd, IntScrollGetObjectId(SBType), info);
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IntDrawScrollArrows(hDC, ScrollBarInfo, Vertical);
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}
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void
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IntDrawScrollBar(HWND Wnd, HDC DC, INT Bar)
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{
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//PSBWND pSBWnd;
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//INT ThumbSize;
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SCROLLBARINFO Info;
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BOOL Vertical;
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/*
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* Get scroll bar info.
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*/
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switch (Bar)
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{
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case SB_HORZ:
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Vertical = FALSE;
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break;
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case SB_VERT:
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Vertical = TRUE;
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break;
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case SB_CTL:
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Vertical = (GetWindowLongPtrW(Wnd, GWL_STYLE) & SBS_VERT) != 0;
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break;
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default:
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return;
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}
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if (!IntGetScrollBarInfo(Wnd, Bar, &Info))
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{
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return;
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}
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if (IsRectEmpty(&Info.rcScrollBar))
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{
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return;
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}
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//ThumbSize = pSBWnd->pSBCalc->pxThumbBottom - pSBWnd->pSBCalc->pxThumbTop;
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/*
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* Draw the arrows.
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*/
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if (Info.dxyLineButton)
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{
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IntDrawScrollArrows(DC, &Info, Vertical);
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}
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/*
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* Draw the interior.
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*/
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IntDrawScrollInterior(Wnd, DC, Bar, Vertical, &Info);
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/*
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* If scroll bar has focus, reposition the caret.
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*/
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if (Wnd == GetFocus() && SB_CTL == Bar)
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{
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if (Vertical)
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{
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SetCaretPos(Info.rcScrollBar.top + 1, Info.dxyLineButton + 1);
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}
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else
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{
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SetCaretPos(Info.dxyLineButton + 1, Info.rcScrollBar.top + 1);
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}
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}
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}
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static BOOL FASTCALL
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IntScrollPtInRectEx(LPRECT Rect, POINT Pt, BOOL Vertical)
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{
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RECT TempRect = *Rect;
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int scrollbarWidth;
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/* Pad hit rect to allow mouse to be dragged outside of scrollbar and
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* still be considered in the scrollbar. */
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if (Vertical)
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{
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scrollbarWidth = Rect->right - Rect->left;
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TempRect.left -= scrollbarWidth*8;
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TempRect.right += scrollbarWidth*8;
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TempRect.top -= scrollbarWidth*2;
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TempRect.bottom += scrollbarWidth*2;
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}
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else
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{
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scrollbarWidth = Rect->bottom - Rect->top;
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TempRect.left -= scrollbarWidth*2;
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TempRect.right += scrollbarWidth*2;
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TempRect.top -= scrollbarWidth*8;
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TempRect.bottom += scrollbarWidth*8;
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}
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return PtInRect(&TempRect, Pt);
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}
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static DWORD FASTCALL
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IntScrollHitTest(PSCROLLBARINFO ScrollBarInfo, BOOL Vertical, POINT Pt, BOOL Dragging)
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{
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INT ArrowSize, ThumbSize, ThumbPos;
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if ((Dragging && ! IntScrollPtInRectEx(&ScrollBarInfo->rcScrollBar, Pt, Vertical)) ||
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! PtInRect(&ScrollBarInfo->rcScrollBar, Pt)) return SCROLL_NOWHERE;
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ThumbPos = ScrollBarInfo->xyThumbTop;
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ThumbSize = ScrollBarInfo->xyThumbBottom - ThumbPos;
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ArrowSize = ScrollBarInfo->dxyLineButton;
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if (Vertical)
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{
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if (Pt.y < ScrollBarInfo->rcScrollBar.top + ArrowSize) return SCROLL_TOP_ARROW;
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if (Pt.y >= ScrollBarInfo->rcScrollBar.bottom - ArrowSize) return SCROLL_BOTTOM_ARROW;
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if (!ThumbPos) return SCROLL_TOP_RECT;
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Pt.y -= ScrollBarInfo->rcScrollBar.top;
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if (Pt.y < ThumbPos) return SCROLL_TOP_RECT;
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if (Pt.y >= ThumbPos + ThumbSize) return SCROLL_BOTTOM_RECT;
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}
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else
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{
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if (Pt.x < ScrollBarInfo->rcScrollBar.left + ArrowSize) return SCROLL_TOP_ARROW;
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if (Pt.x >= ScrollBarInfo->rcScrollBar.right - ArrowSize) return SCROLL_BOTTOM_ARROW;
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if (!ThumbPos) return SCROLL_TOP_RECT;
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Pt.x -= ScrollBarInfo->rcScrollBar.left;
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if (Pt.x < ThumbPos) return SCROLL_TOP_RECT;
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if (Pt.x >= ThumbPos + ThumbSize) return SCROLL_BOTTOM_RECT;
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}
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return SCROLL_THUMB;
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}
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/***********************************************************************
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* IntScrollGetScrollBarRect
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*
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* Compute the scroll bar rectangle, in drawing coordinates (i.e. client
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* coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
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* 'arrowSize' returns the width or height of an arrow (depending on
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* the orientation of the scrollbar), 'thumbSize' returns the size of
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* the thumb, and 'thumbPos' returns the position of the thumb
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* relative to the left or to the top.
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* Return TRUE if the scrollbar is vertical, FALSE if horizontal.
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*/
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static BOOL FASTCALL
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IntScrollGetScrollBarRect(HWND Wnd, INT Bar, RECT *Rect,
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INT *ArrowSize, INT *ThumbSize,
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INT *ThumbPos)
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{
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INT Pixels;
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BOOL Vertical;
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PWND pWnd;
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PSBINFO pSBInfo;
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PSBDATA pSBData;
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PSBWND pSBWnd;
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pWnd = ValidateHwnd( Wnd );
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if (!pWnd) return FALSE;
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pSBInfo = DesktopPtrToUser(pWnd->pSBInfo);
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*Rect = pWnd->rcClient;
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OffsetRect( Rect, -pWnd->rcWindow.left, -pWnd->rcWindow.top );
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if (pWnd->ExStyle & WS_EX_LAYOUTRTL)
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mirror_rect( &pWnd->rcWindow, Rect );
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|
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switch (Bar)
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{
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|
case SB_HORZ:
|
|
// WIN_GetRectangles( Wnd, COORDS_WINDOW, NULL, Rect );
|
|
Rect->top = Rect->bottom;
|
|
Rect->bottom += GetSystemMetrics(SM_CYHSCROLL);
|
|
if (pWnd->style & WS_BORDER)
|
|
{
|
|
Rect->left--;
|
|
Rect->right++;
|
|
}
|
|
else if (pWnd->style & WS_VSCROLL)
|
|
{
|
|
Rect->right++;
|
|
}
|
|
Vertical = FALSE;
|
|
pSBData = &pSBInfo->Horz;
|
|
break;
|
|
|
|
case SB_VERT:
|
|
// WIN_GetRectangles( Wnd, COORDS_WINDOW, NULL, Rect );
|
|
if (pWnd->ExStyle & WS_EX_LEFTSCROLLBAR)
|
|
{
|
|
Rect->right = Rect->left;
|
|
Rect->left -= GetSystemMetrics(SM_CXVSCROLL);
|
|
}
|
|
else
|
|
{
|
|
Rect->left = Rect->right;
|
|
Rect->right += GetSystemMetrics(SM_CXVSCROLL);
|
|
}
|
|
if (pWnd->style & WS_BORDER)
|
|
{
|
|
Rect->top--;
|
|
Rect->bottom++;
|
|
}
|
|
else if (pWnd->style & WS_HSCROLL)
|
|
{
|
|
Rect->bottom++;
|
|
}
|
|
Vertical = TRUE;
|
|
pSBData = &pSBInfo->Vert;
|
|
break;
|
|
|
|
case SB_CTL:
|
|
GetClientRect( Wnd, Rect );
|
|
Vertical = (pWnd->style & SBS_VERT);
|
|
pSBWnd = (PSBWND)pWnd;
|
|
pSBData = (PSBDATA)&pSBWnd->SBCalc;
|
|
break;
|
|
|
|
default:
|
|
return FALSE;
|
|
}
|
|
|
|
if (Vertical) Pixels = Rect->bottom - Rect->top;
|
|
else Pixels = Rect->right - Rect->left;
|
|
|
|
if (Pixels <= 2 * GetSystemMetrics(SM_CXVSCROLL) + SCROLL_MIN_RECT)
|
|
{
|
|
if (SCROLL_MIN_RECT < Pixels)
|
|
*ArrowSize = (Pixels - SCROLL_MIN_RECT) / 2;
|
|
else
|
|
*ArrowSize = 0;
|
|
*ThumbPos = *ThumbSize = 0;
|
|
}
|
|
else
|
|
{
|
|
*ArrowSize = GetSystemMetrics(SM_CXVSCROLL);
|
|
Pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP));
|
|
if (pSBData->page)
|
|
{
|
|
*ThumbSize = MulDiv(Pixels, pSBData->page, (pSBData->posMax - pSBData->posMin + 1));
|
|
if (*ThumbSize < SCROLL_MIN_THUMB) *ThumbSize = SCROLL_MIN_THUMB;
|
|
}
|
|
else *ThumbSize = GetSystemMetrics(SM_CXVSCROLL);
|
|
|
|
if (((Pixels -= *ThumbSize ) < 0) ||
|
|
(( pSBInfo->WSBflags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
|
|
{
|
|
/* Rectangle too small or scrollbar disabled -> no thumb */
|
|
*ThumbPos = *ThumbSize = 0;
|
|
}
|
|
else
|
|
{
|
|
INT Max = pSBData->posMax - max(pSBData->page - 1, 0);
|
|
if (pSBData->posMin >= Max)
|
|
*ThumbPos = *ArrowSize - SCROLL_ARROW_THUMB_OVERLAP;
|
|
else
|
|
*ThumbPos = *ArrowSize - SCROLL_ARROW_THUMB_OVERLAP
|
|
+ MulDiv(Pixels, (pSBData->pos - pSBData->posMin),(Max - pSBData->posMin));
|
|
}
|
|
}
|
|
return Vertical;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* IntScrollGetThumbVal
|
|
*
|
|
* Compute the current scroll position based on the thumb position in pixels
|
|
* from the top of the scroll-bar.
|
|
*/
|
|
static UINT FASTCALL
|
|
IntScrollGetThumbVal(HWND Wnd, INT SBType, PSCROLLBARINFO ScrollBarInfo,
|
|
BOOL Vertical, INT Pos)
|
|
{
|
|
PWND pWnd;
|
|
PSBDATA pSBData;
|
|
INT Pixels = Vertical ? ScrollBarInfo->rcScrollBar.bottom
|
|
- ScrollBarInfo->rcScrollBar.top
|
|
: ScrollBarInfo->rcScrollBar.right
|
|
- ScrollBarInfo->rcScrollBar.left;
|
|
|
|
pWnd = ValidateHwnd( Wnd );
|
|
if (!pWnd) return FALSE;
|
|
|
|
pSBData = IntGetSBData(pWnd, SBType);
|
|
|
|
if ((Pixels -= 2 * ScrollBarInfo->dxyLineButton) <= 0)
|
|
{
|
|
return pSBData->posMin;
|
|
}
|
|
|
|
if ((Pixels -= (ScrollBarInfo->xyThumbBottom - ScrollBarInfo->xyThumbTop)) <= 0)
|
|
{
|
|
return pSBData->posMin;
|
|
}
|
|
|
|
Pos = Pos - ScrollBarInfo->dxyLineButton;
|
|
if (Pos < 0)
|
|
{
|
|
Pos = 0;
|
|
}
|
|
if (Pos > Pixels) Pos = Pixels;
|
|
|
|
if (!pSBData->page)
|
|
Pos *= pSBData->posMax - pSBData->posMin;
|
|
else
|
|
Pos *= pSBData->posMax - pSBData->posMin - pSBData->page + 1;
|
|
|
|
return pSBData->posMin + ((Pos + Pixels / 2) / Pixels);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* IntScrollClipPos
|
|
*/
|
|
static POINT IntScrollClipPos(PRECT lpRect, POINT pt)
|
|
{
|
|
if( pt.x < lpRect->left )
|
|
pt.x = lpRect->left;
|
|
else
|
|
if( pt.x > lpRect->right )
|
|
pt.x = lpRect->right;
|
|
|
|
if( pt.y < lpRect->top )
|
|
pt.y = lpRect->top;
|
|
else
|
|
if( pt.y > lpRect->bottom )
|
|
pt.y = lpRect->bottom;
|
|
|
|
return pt;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* IntScrollDrawSizeGrip
|
|
*
|
|
* Draw the size grip.
|
|
*/
|
|
static void FASTCALL
|
|
IntScrollDrawSizeGrip(HWND Wnd, HDC Dc)
|
|
{
|
|
RECT Rect;
|
|
|
|
GetClientRect(Wnd, &Rect);
|
|
FillRect(Dc, &Rect, GetSysColorBrush(COLOR_SCROLLBAR));
|
|
Rect.left = max(Rect.left, Rect.right - GetSystemMetrics(SM_CXVSCROLL) - 1);
|
|
Rect.top = max(Rect.top, Rect.bottom - GetSystemMetrics(SM_CYHSCROLL) - 1);
|
|
DrawFrameControl(Dc, &Rect, DFC_SCROLL, DFCS_SCROLLSIZEGRIP);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SCROLL_RefreshScrollBar
|
|
*
|
|
* Repaint the scroll bar interior after a SetScrollRange() or
|
|
* SetScrollPos() call.
|
|
*/
|
|
static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
|
|
BOOL arrows, BOOL interior )
|
|
{
|
|
HDC hdc = GetDCEx( hwnd, 0,
|
|
DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
|
|
if (!hdc) return;
|
|
|
|
IntDrawScrollBar( hwnd, hdc, nBar);//, arrows, interior );
|
|
ReleaseDC( hwnd, hdc );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IntScrollHandleKbdEvent
|
|
*
|
|
* Handle a keyboard event (only for SB_CTL scrollbars with focus).
|
|
*/
|
|
static void FASTCALL
|
|
IntScrollHandleKbdEvent(
|
|
HWND Wnd /* [in] Handle of window with scrollbar(s) */,
|
|
WPARAM wParam /* [in] Variable input including enable state */,
|
|
LPARAM lParam /* [in] Variable input including input point */)
|
|
{
|
|
TRACE("Wnd=%p wParam=%ld lParam=%ld\n", Wnd, wParam, lParam);
|
|
|
|
/* hide caret on first KEYDOWN to prevent flicker */
|
|
if (0 == (lParam & PFD_DOUBLEBUFFER_DONTCARE))
|
|
{
|
|
HideCaret(Wnd);
|
|
}
|
|
|
|
switch(wParam)
|
|
{
|
|
case VK_PRIOR:
|
|
wParam = SB_PAGEUP;
|
|
break;
|
|
|
|
case VK_NEXT:
|
|
wParam = SB_PAGEDOWN;
|
|
break;
|
|
|
|
case VK_HOME:
|
|
wParam = SB_TOP;
|
|
break;
|
|
|
|
case VK_END:
|
|
wParam = SB_BOTTOM;
|
|
break;
|
|
|
|
case VK_UP:
|
|
wParam = SB_LINEUP;
|
|
break;
|
|
|
|
case VK_DOWN:
|
|
wParam = SB_LINEDOWN;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
SendMessageW(GetParent(Wnd),
|
|
(0 != (GetWindowLongPtrW(Wnd, GWL_STYLE ) & SBS_VERT) ?
|
|
WM_VSCROLL : WM_HSCROLL), wParam, (LPARAM) Wnd);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* IntScrollHandleScrollEvent
|
|
*
|
|
* Handle a mouse or timer event for the scrollbar.
|
|
* 'Pt' is the location of the mouse event in drawing coordinates
|
|
*/
|
|
static VOID FASTCALL
|
|
IntScrollHandleScrollEvent(HWND Wnd, INT SBType, UINT Msg, POINT Pt)
|
|
{
|
|
static POINT PrevPt; /* Previous mouse position for timer events */
|
|
static UINT TrackThumbPos; /* Thumb position when tracking started. */
|
|
static INT LastClickPos; /* Position in the scroll-bar of the last
|
|
button-down event. */
|
|
static INT LastMousePos; /* Position in the scroll-bar of the last
|
|
mouse event. */
|
|
|
|
DWORD HitTest;
|
|
HWND WndOwner, WndCtl;
|
|
BOOL Vertical;
|
|
HDC Dc;
|
|
SCROLLBARINFO ScrollBarInfo;
|
|
SETSCROLLBARINFO NewInfo;
|
|
|
|
if (! IntGetScrollBarInfo(Wnd, SBType, &ScrollBarInfo))
|
|
{
|
|
return;
|
|
}
|
|
if ((ScrollTrackHitTest == SCROLL_NOWHERE) && (Msg != WM_LBUTTONDOWN))
|
|
{
|
|
//// ReactOS : Justin Case something goes wrong.
|
|
if (Wnd == GetCapture())
|
|
{
|
|
ReleaseCapture();
|
|
}
|
|
////
|
|
return;
|
|
}
|
|
|
|
NewInfo.nTrackPos = ScrollTrackingVal;
|
|
NewInfo.reserved = ScrollBarInfo.reserved;
|
|
memcpy(NewInfo.rgstate, ScrollBarInfo.rgstate, (CCHILDREN_SCROLLBAR + 1) * sizeof(DWORD));
|
|
|
|
if (SBType == SB_CTL && (GetWindowLongPtrW(Wnd, GWL_STYLE) & (SBS_SIZEGRIP | SBS_SIZEBOX)))
|
|
{
|
|
switch(Msg)
|
|
{
|
|
case WM_LBUTTONDOWN: /* Initialise mouse tracking */
|
|
HideCaret(Wnd); /* hide caret while holding down LBUTTON */
|
|
SetCapture(Wnd);
|
|
PrevPt = Pt;
|
|
ScrollTrackHitTest = HitTest = SCROLL_THUMB;
|
|
break;
|
|
case WM_MOUSEMOVE:
|
|
GetClientRect(GetParent(GetParent(Wnd)), &ScrollBarInfo.rcScrollBar);
|
|
PrevPt = Pt;
|
|
break;
|
|
case WM_LBUTTONUP:
|
|
ReleaseCapture();
|
|
ScrollTrackHitTest = HitTest = SCROLL_NOWHERE;
|
|
if (Wnd == GetFocus()) ShowCaret(Wnd);
|
|
break;
|
|
case WM_SYSTIMER:
|
|
Pt = PrevPt;
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
Dc = GetDCEx(Wnd, 0, DCX_CACHE | ((SB_CTL == SBType) ? 0 : DCX_WINDOW));
|
|
if (SB_VERT == SBType)
|
|
{
|
|
Vertical = TRUE;
|
|
}
|
|
else if (SB_HORZ == SBType)
|
|
{
|
|
Vertical = FALSE;
|
|
}
|
|
else
|
|
{
|
|
Vertical = (0 != (GetWindowLongPtrW(Wnd, GWL_STYLE) & SBS_VERT));
|
|
}
|
|
WndOwner = (SB_CTL == SBType) ? GetParent(Wnd) : Wnd;
|
|
WndCtl = (SB_CTL == SBType) ? Wnd : NULL;
|
|
|
|
switch (Msg)
|
|
{
|
|
case WM_LBUTTONDOWN: /* Initialise mouse tracking */
|
|
HideCaret(Wnd); /* hide caret while holding down LBUTTON */
|
|
ScrollTrackVertical = Vertical;
|
|
ScrollTrackHitTest = HitTest = IntScrollHitTest(&ScrollBarInfo, Vertical, Pt, FALSE );
|
|
LastClickPos = Vertical ? (Pt.y - ScrollBarInfo.rcScrollBar.top)
|
|
: (Pt.x - ScrollBarInfo.rcScrollBar.left);
|
|
LastMousePos = LastClickPos;
|
|
TrackThumbPos = ScrollBarInfo.xyThumbTop;
|
|
PrevPt = Pt;
|
|
if (SBType == SB_CTL && (GetWindowLongPtrW(Wnd, GWL_STYLE) & WS_TABSTOP)) SetFocus(Wnd);
|
|
SetCapture(Wnd);
|
|
/* Don't update scrollbar if disabled. */
|
|
if (ScrollBarInfo.rgstate[ScrollTrackHitTest] != STATE_SYSTEM_UNAVAILABLE)
|
|
{
|
|
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, TRUE);
|
|
}
|
|
break;
|
|
|
|
case WM_MOUSEMOVE:
|
|
HitTest = IntScrollHitTest(&ScrollBarInfo, Vertical, Pt, TRUE);
|
|
PrevPt = Pt;
|
|
break;
|
|
|
|
case WM_LBUTTONUP:
|
|
HitTest = SCROLL_NOWHERE;
|
|
ReleaseCapture();
|
|
/* if scrollbar has focus, show back caret */
|
|
if (Wnd == GetFocus()) ShowCaret(Wnd);
|
|
/* Don't update scrollbar if disabled. */
|
|
if (ScrollBarInfo.rgstate[ScrollTrackHitTest] != STATE_SYSTEM_UNAVAILABLE)
|
|
{
|
|
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, FALSE);
|
|
IntDrawScrollInterior(Wnd,Dc,SBType,Vertical,&ScrollBarInfo);
|
|
}
|
|
break;
|
|
|
|
case WM_SYSTIMER:
|
|
Pt = PrevPt;
|
|
HitTest = IntScrollHitTest(&ScrollBarInfo, Vertical, Pt, FALSE);
|
|
break;
|
|
|
|
default:
|
|
return; /* Should never happen */
|
|
}
|
|
|
|
TRACE("Event: hwnd=%p bar=%d msg=%s pt=%d,%d hit=%d\n",
|
|
Wnd, SBType, SPY_GetMsgName(Msg,Wnd), Pt.x, Pt.y, HitTest );
|
|
|
|
switch (ScrollTrackHitTest)
|
|
{
|
|
case SCROLL_NOWHERE: /* No tracking in progress */
|
|
break;
|
|
|
|
case SCROLL_TOP_ARROW:
|
|
if (HitTest == ScrollTrackHitTest)
|
|
{
|
|
if ((WM_LBUTTONDOWN == Msg) || (WM_SYSTIMER == Msg))
|
|
{
|
|
SendMessageW(WndOwner, Vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
SB_LINEUP, (LPARAM) WndCtl);
|
|
}
|
|
SetSystemTimer(Wnd, SCROLL_TIMER, (WM_LBUTTONDOWN == Msg) ?
|
|
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
|
|
(TIMERPROC) NULL);
|
|
if (ScrollBarInfo.rgstate[ScrollTrackHitTest] != STATE_SYSTEM_UNAVAILABLE)
|
|
{
|
|
if (!(ScrollBarInfo.rgstate[ScrollTrackHitTest] &= STATE_SYSTEM_PRESSED))
|
|
{
|
|
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, TRUE);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, FALSE);
|
|
KillSystemTimer(Wnd, SCROLL_TIMER);
|
|
}
|
|
break;
|
|
|
|
case SCROLL_TOP_RECT:
|
|
if (HitTest == ScrollTrackHitTest)
|
|
{
|
|
if ((WM_LBUTTONDOWN == Msg) || (WM_SYSTIMER == Msg))
|
|
{
|
|
SendMessageW(WndOwner, Vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
SB_PAGEUP, (LPARAM) WndCtl);
|
|
}
|
|
SetSystemTimer(Wnd, SCROLL_TIMER, (WM_LBUTTONDOWN == Msg) ?
|
|
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
|
|
(TIMERPROC) NULL);
|
|
}
|
|
else
|
|
{
|
|
KillSystemTimer(Wnd, SCROLL_TIMER);
|
|
}
|
|
break;
|
|
|
|
case SCROLL_THUMB:
|
|
if (Msg == WM_LBUTTONDOWN)
|
|
{
|
|
ScrollTrackingWin = Wnd;
|
|
ScrollTrackingBar = SBType;
|
|
ScrollTrackingPos = TrackThumbPos + LastMousePos - LastClickPos;
|
|
ScrollTrackingVal = IntScrollGetThumbVal(Wnd, SBType, &ScrollBarInfo,
|
|
Vertical, ScrollTrackingPos);
|
|
NewInfo.nTrackPos = ScrollTrackingVal;
|
|
NtUserSetScrollBarInfo(Wnd, IntScrollGetObjectId(SBType), &NewInfo);
|
|
IntScrollDrawMovingThumb(Dc, &ScrollBarInfo, Vertical);
|
|
}
|
|
else if (Msg == WM_LBUTTONUP)
|
|
{
|
|
ScrollTrackingWin = 0;
|
|
ScrollTrackingVal = 0;
|
|
IntDrawScrollInterior(Wnd, Dc, SBType, Vertical, &ScrollBarInfo);
|
|
}
|
|
else /* WM_MOUSEMOVE */
|
|
{
|
|
UINT Pos;
|
|
|
|
if (! IntScrollPtInRectEx(&ScrollBarInfo.rcScrollBar, Pt, Vertical))
|
|
{
|
|
Pos = LastClickPos;
|
|
}
|
|
else
|
|
{
|
|
Pt = IntScrollClipPos(&ScrollBarInfo.rcScrollBar, Pt);
|
|
Pos = Vertical ? (Pt.y - ScrollBarInfo.rcScrollBar.top)
|
|
: (Pt.x - ScrollBarInfo.rcScrollBar.left);
|
|
}
|
|
if (Pos != LastMousePos || ! ScrollMovingThumb)
|
|
{
|
|
LastMousePos = Pos;
|
|
ScrollTrackingPos = TrackThumbPos + Pos - LastClickPos;
|
|
ScrollTrackingVal = IntScrollGetThumbVal(Wnd, SBType, &ScrollBarInfo,
|
|
Vertical, ScrollTrackingPos);
|
|
NewInfo.nTrackPos = ScrollTrackingVal;
|
|
NtUserSetScrollBarInfo(Wnd, IntScrollGetObjectId(SBType), &NewInfo);
|
|
IntScrollDrawMovingThumb(Dc, &ScrollBarInfo, Vertical);
|
|
SendMessageW(WndOwner, Vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
MAKEWPARAM(SB_THUMBTRACK, ScrollTrackingVal),
|
|
(LPARAM) WndCtl);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case SCROLL_BOTTOM_RECT:
|
|
if (HitTest == ScrollTrackHitTest)
|
|
{
|
|
if ((Msg == WM_LBUTTONDOWN) || (Msg == WM_SYSTIMER))
|
|
{
|
|
SendMessageW(WndOwner, Vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
SB_PAGEDOWN, (LPARAM) WndCtl);
|
|
}
|
|
SetSystemTimer(Wnd, SCROLL_TIMER, (WM_LBUTTONDOWN == Msg) ?
|
|
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
|
|
(TIMERPROC) NULL);
|
|
}
|
|
else
|
|
{
|
|
KillSystemTimer(Wnd, SCROLL_TIMER);
|
|
}
|
|
break;
|
|
|
|
case SCROLL_BOTTOM_ARROW:
|
|
if (HitTest == ScrollTrackHitTest)
|
|
{
|
|
if ((Msg == WM_LBUTTONDOWN) || (Msg == WM_SYSTIMER))
|
|
{
|
|
SendMessageW(WndOwner, Vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
SB_LINEDOWN, (LPARAM) WndCtl);
|
|
}
|
|
SetSystemTimer(Wnd, SCROLL_TIMER, (WM_LBUTTONDOWN == Msg) ?
|
|
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
|
|
(TIMERPROC) NULL);
|
|
if (ScrollBarInfo.rgstate[ScrollTrackHitTest] != STATE_SYSTEM_UNAVAILABLE)
|
|
{
|
|
if (!(ScrollBarInfo.rgstate[ScrollTrackHitTest] &= STATE_SYSTEM_PRESSED))
|
|
{
|
|
TRACE("Set Arrow\n");
|
|
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, TRUE);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, FALSE);
|
|
KillSystemTimer(Wnd, SCROLL_TIMER);
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (Msg == WM_LBUTTONDOWN)
|
|
{
|
|
if (SCROLL_THUMB == HitTest)
|
|
{
|
|
UINT Val = IntScrollGetThumbVal(Wnd, SBType, &ScrollBarInfo, Vertical,
|
|
TrackThumbPos + LastMousePos - LastClickPos);
|
|
SendMessageW(WndOwner, Vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
MAKEWPARAM(SB_THUMBTRACK, Val), (LPARAM) WndCtl);
|
|
}
|
|
}
|
|
|
|
if (Msg == WM_LBUTTONUP)
|
|
{
|
|
HitTest = ScrollTrackHitTest;
|
|
ScrollTrackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
|
|
|
|
if (SCROLL_THUMB == HitTest)
|
|
{
|
|
UINT Val = IntScrollGetThumbVal(Wnd, SBType, &ScrollBarInfo, Vertical,
|
|
TrackThumbPos + LastMousePos - LastClickPos);
|
|
SendMessageW(WndOwner, Vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
MAKEWPARAM(SB_THUMBPOSITION, Val), (LPARAM) WndCtl);
|
|
}
|
|
/* SB_ENDSCROLL doesn't report thumb position */
|
|
SendMessageW(WndOwner, Vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
SB_ENDSCROLL, (LPARAM) WndCtl);
|
|
|
|
/* Terminate tracking */
|
|
ScrollTrackingWin = 0;
|
|
}
|
|
|
|
ReleaseDC(Wnd, Dc);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IntScrollCreateScrollBar
|
|
*
|
|
* Create a scroll bar
|
|
*/
|
|
static void IntScrollCreateScrollBar(
|
|
HWND Wnd /* [in] Handle of window with scrollbar(s) */,
|
|
LPCREATESTRUCTW lpCreate /* [in] The style and place of the scroll bar */)
|
|
{
|
|
SCROLLINFO Info;
|
|
|
|
Info.cbSize = sizeof(SCROLLINFO);
|
|
Info.fMask = SIF_RANGE | SIF_PAGE | SIF_POS;
|
|
Info.nMin = 0;
|
|
Info.nMax = 0;
|
|
Info.nPage = 0;
|
|
Info.nPos = 0;
|
|
Info.nTrackPos = 0;
|
|
NtUserSetScrollInfo(Wnd, SB_CTL, &Info, FALSE);
|
|
|
|
TRACE("hwnd=%p lpCreate=%p\n", Wnd, lpCreate);
|
|
|
|
#if 0 /* FIXME */
|
|
if (lpCreate->style & WS_DISABLED)
|
|
{
|
|
// info->flags = ESB_DISABLE_BOTH;
|
|
//NtUserEnableScrollBar(Wnd,SB_CTL,(wParam ? ESB_ENABLE_BOTH : ESB_DISABLE_BOTH));
|
|
NtUserMessageCall( Wnd, WM_ENABLE, FALSE, 0, 0, FNID_SCROLLBAR, FALSE);
|
|
ERR("Created WS_DISABLED scrollbar\n");
|
|
}
|
|
#endif
|
|
if (0 != (lpCreate->style & (SBS_SIZEGRIP | SBS_SIZEBOX)))
|
|
{
|
|
if (0 != (lpCreate->style & SBS_SIZEBOXTOPLEFTALIGN))
|
|
{
|
|
MoveWindow(Wnd, lpCreate->x, lpCreate->y, GetSystemMetrics(SM_CXVSCROLL) + 1,
|
|
GetSystemMetrics(SM_CYHSCROLL) + 1, FALSE);
|
|
}
|
|
else if (0 != (lpCreate->style & SBS_SIZEBOXBOTTOMRIGHTALIGN))
|
|
{
|
|
MoveWindow(Wnd, lpCreate->x + lpCreate->cx - GetSystemMetrics(SM_CXVSCROLL) - 1,
|
|
lpCreate->y + lpCreate->cy - GetSystemMetrics(SM_CYHSCROLL) - 1,
|
|
GetSystemMetrics(SM_CXVSCROLL) + 1,
|
|
GetSystemMetrics(SM_CYHSCROLL) + 1, FALSE);
|
|
}
|
|
}
|
|
else if (0 != (lpCreate->style & SBS_VERT))
|
|
{
|
|
if (0 != (lpCreate->style & SBS_LEFTALIGN))
|
|
{
|
|
MoveWindow(Wnd, lpCreate->x, lpCreate->y,
|
|
GetSystemMetrics(SM_CXVSCROLL) + 1, lpCreate->cy, FALSE);
|
|
}
|
|
else if (0 != (lpCreate->style & SBS_RIGHTALIGN))
|
|
{
|
|
MoveWindow(Wnd,
|
|
lpCreate->x + lpCreate->cx - GetSystemMetrics(SM_CXVSCROLL) - 1,
|
|
lpCreate->y,
|
|
GetSystemMetrics(SM_CXVSCROLL) + 1, lpCreate->cy, FALSE);
|
|
}
|
|
}
|
|
else /* SBS_HORZ */
|
|
{
|
|
if (0 != (lpCreate->style & SBS_TOPALIGN))
|
|
{
|
|
MoveWindow(Wnd, lpCreate->x, lpCreate->y,
|
|
lpCreate->cx, GetSystemMetrics(SM_CYHSCROLL) + 1, FALSE);
|
|
}
|
|
else if (0 != (lpCreate->style & SBS_BOTTOMALIGN))
|
|
{
|
|
MoveWindow(Wnd,
|
|
lpCreate->x,
|
|
lpCreate->y + lpCreate->cy - GetSystemMetrics(SM_CYHSCROLL) - 1,
|
|
lpCreate->cx, GetSystemMetrics(SM_CYHSCROLL) + 1, FALSE);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* USER32 INTERNAL FUNCTIONS **************************************************/
|
|
|
|
/***********************************************************************
|
|
* ScrollTrackScrollBar
|
|
*
|
|
* Track a mouse button press on a scroll-bar.
|
|
* pt is in screen-coordinates for non-client scroll bars.
|
|
*/
|
|
VOID FASTCALL
|
|
ScrollTrackScrollBar(HWND Wnd, INT SBType, POINT Pt)
|
|
{
|
|
MSG Msg;
|
|
UINT XOffset = 0, YOffset = 0;
|
|
|
|
if (SBType != SB_CTL)
|
|
{ // Used with CMD mouse tracking.
|
|
PWND pwnd = ValidateHwnd(Wnd);
|
|
if (!pwnd) return;
|
|
XOffset = pwnd->rcClient.left - pwnd->rcWindow.left;
|
|
YOffset = pwnd->rcClient.top - pwnd->rcWindow.top;
|
|
// RECT rect;
|
|
// WIN_GetRectangles( Wnd, COORDS_CLIENT, &rect, NULL );
|
|
ScreenToClient(Wnd, &Pt);
|
|
// Pt.x -= rect.left;
|
|
// Pt.y -= rect.top;
|
|
Pt.x += XOffset;
|
|
Pt.y += YOffset;
|
|
}
|
|
|
|
IntScrollHandleScrollEvent(Wnd, SBType, WM_LBUTTONDOWN, Pt);
|
|
|
|
do
|
|
{
|
|
if (!GetMessageW(&Msg, 0, 0, 0)) break;
|
|
if (CallMsgFilterW(&Msg, MSGF_SCROLLBAR)) continue;
|
|
if ( Msg.message == WM_LBUTTONUP ||
|
|
Msg.message == WM_MOUSEMOVE ||
|
|
(Msg.message == WM_SYSTIMER && Msg.wParam == SCROLL_TIMER))
|
|
{
|
|
Pt.x = LOWORD(Msg.lParam) + XOffset;
|
|
Pt.y = HIWORD(Msg.lParam) + YOffset;
|
|
IntScrollHandleScrollEvent(Wnd, SBType, Msg.message, Pt);
|
|
}
|
|
else
|
|
{
|
|
TranslateMessage(&Msg);
|
|
DispatchMessageW(&Msg);
|
|
}
|
|
if (!IsWindow(Wnd))
|
|
{
|
|
ReleaseCapture();
|
|
break;
|
|
}
|
|
} while (Msg.message != WM_LBUTTONUP && GetCapture() == Wnd);
|
|
}
|
|
|
|
|
|
static DWORD FASTCALL
|
|
IntSetScrollInfo(HWND Wnd, LPCSCROLLINFO Info, BOOL bRedraw)
|
|
{
|
|
DWORD Ret = NtUserSetScrollInfo(Wnd, SB_CTL, Info, bRedraw);
|
|
if (Ret) IntNotifyWinEvent(EVENT_OBJECT_VALUECHANGE, Wnd, OBJID_CLIENT, CHILDID_SELF, WEF_SETBYWNDPTI);
|
|
return Ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ScrollBarWndProc
|
|
*/
|
|
LRESULT WINAPI
|
|
ScrollBarWndProc_common(WNDPROC DefWindowProc, HWND Wnd, UINT Msg, WPARAM wParam, LPARAM lParam, BOOL unicode )
|
|
{
|
|
#ifdef __REACTOS__ // Do this now, remove after Server side is fixed.
|
|
PWND pWnd;
|
|
PSBWND pSBWnd;
|
|
SCROLLINFO ScrollInfo;
|
|
|
|
pWnd = ValidateHwnd(Wnd);
|
|
if (pWnd)
|
|
{
|
|
if (!pWnd->fnid)
|
|
{
|
|
TRACE("ScrollBar CTL size %d\n", (sizeof(SBWND)-sizeof(WND)));
|
|
if ( pWnd->cbwndExtra < (sizeof(SBWND)-sizeof(WND)) )
|
|
{
|
|
ERR("Wrong Extra bytes for Scrollbar!\n");
|
|
return 0;
|
|
}
|
|
|
|
if (Msg != WM_CREATE)
|
|
{
|
|
return DefWindowProc(Wnd, Msg, wParam, lParam);
|
|
}
|
|
NtUserSetWindowFNID(Wnd, FNID_SCROLLBAR);
|
|
}
|
|
else
|
|
{
|
|
if (pWnd->fnid != FNID_SCROLLBAR)
|
|
{
|
|
ERR("Wrong window class for Scrollbar!\n");
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (! IsWindow(Wnd))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
// Must be a scroll bar control!
|
|
pSBWnd = (PSBWND)pWnd;
|
|
|
|
switch (Msg)
|
|
{
|
|
case WM_CREATE:
|
|
IntScrollCreateScrollBar(Wnd, (LPCREATESTRUCTW) lParam);
|
|
break;
|
|
|
|
case WM_ENABLE:
|
|
{
|
|
return SendMessageW( Wnd, SBM_ENABLE_ARROWS, wParam ? ESB_ENABLE_BOTH : ESB_DISABLE_BOTH, 0);
|
|
}
|
|
|
|
case WM_LBUTTONDBLCLK:
|
|
case WM_LBUTTONDOWN:
|
|
if (GetWindowLongW( Wnd, GWL_STYLE ) & SBS_SIZEGRIP)
|
|
{
|
|
SendMessageW( GetParent(Wnd), WM_SYSCOMMAND,
|
|
SC_SIZE + ((GetWindowLongW( Wnd, GWL_EXSTYLE ) & WS_EX_LAYOUTRTL) ?
|
|
WMSZ_BOTTOMLEFT : WMSZ_BOTTOMRIGHT), lParam );
|
|
}
|
|
else
|
|
{
|
|
POINT Pt;
|
|
Pt.x = (short)LOWORD(lParam);
|
|
Pt.y = (short)HIWORD(lParam);
|
|
ScrollTrackScrollBar(Wnd, SB_CTL, Pt);
|
|
}
|
|
break;
|
|
|
|
case WM_LBUTTONUP:
|
|
case WM_MOUSEMOVE:
|
|
case WM_SYSTIMER:
|
|
{
|
|
POINT Pt;
|
|
Pt.x = (short)LOWORD(lParam);
|
|
Pt.y = (short)HIWORD(lParam);
|
|
IntScrollHandleScrollEvent(Wnd, SB_CTL, Msg, Pt);
|
|
}
|
|
break;
|
|
|
|
case WM_KEYDOWN:
|
|
IntScrollHandleKbdEvent(Wnd, wParam, lParam);
|
|
break;
|
|
|
|
case WM_KEYUP:
|
|
ShowCaret(Wnd);
|
|
break;
|
|
|
|
case WM_SETFOCUS:
|
|
{
|
|
/* Create a caret when a ScrollBar get focus */
|
|
RECT Rect;
|
|
int ArrowSize, ThumbSize, ThumbPos, Vertical;
|
|
|
|
Vertical = IntScrollGetScrollBarRect(Wnd, SB_CTL, &Rect,
|
|
&ArrowSize, &ThumbSize, &ThumbPos);
|
|
if (! Vertical)
|
|
{
|
|
CreateCaret(Wnd, (HBITMAP) 1, ThumbSize - 2, Rect.bottom - Rect.top - 2);
|
|
SetCaretPos(ThumbPos + 1, Rect.top + 1);
|
|
}
|
|
else
|
|
{
|
|
CreateCaret(Wnd, (HBITMAP) 1, Rect.right - Rect.left - 2, ThumbSize - 2);
|
|
SetCaretPos(Rect.top + 1, ThumbPos + 1);
|
|
}
|
|
ShowCaret(Wnd);
|
|
}
|
|
break;
|
|
|
|
case WM_KILLFOCUS:
|
|
{
|
|
RECT Rect;
|
|
int ArrowSize, ThumbSize, ThumbPos, Vertical;
|
|
|
|
Vertical = IntScrollGetScrollBarRect(Wnd, SB_CTL, &Rect,
|
|
&ArrowSize, &ThumbSize, &ThumbPos);
|
|
if (! Vertical)
|
|
{
|
|
Rect.left = ThumbPos + 1;
|
|
Rect.right = Rect.left + ThumbSize;
|
|
}
|
|
else
|
|
{
|
|
Rect.top = ThumbPos + 1;
|
|
Rect.bottom = Rect.top + ThumbSize;
|
|
}
|
|
HideCaret(Wnd);
|
|
InvalidateRect(Wnd, &Rect, FALSE);
|
|
DestroyCaret();
|
|
}
|
|
break;
|
|
|
|
case WM_ERASEBKGND:
|
|
return 1;
|
|
|
|
case WM_GETDLGCODE:
|
|
return DLGC_WANTARROWS; /* Windows returns this value */
|
|
|
|
case WM_PAINT:
|
|
{
|
|
PAINTSTRUCT Ps;
|
|
HDC Dc;
|
|
|
|
Dc = (0 != wParam ? (HDC) wParam : BeginPaint(Wnd, &Ps));
|
|
|
|
if (GetWindowLongPtrW(Wnd, GWL_STYLE) & SBS_SIZEGRIP)
|
|
{
|
|
IntScrollDrawSizeGrip(Wnd, Dc);
|
|
}
|
|
else if (0 != (GetWindowLongPtrW(Wnd, GWL_STYLE) & SBS_SIZEBOX))
|
|
{
|
|
RECT Rect;
|
|
GetClientRect(Wnd, &Rect);
|
|
FillRect(Dc, &Rect, GetSysColorBrush(COLOR_SCROLLBAR));
|
|
}
|
|
else
|
|
{
|
|
IntDrawScrollBar(Wnd, Dc, SB_CTL/*, TRUE, TRUE*/);
|
|
}
|
|
|
|
if (0 == wParam)
|
|
{
|
|
EndPaint(Wnd, &Ps);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case SBM_GETPOS:
|
|
return pSBWnd->SBCalc.pos;
|
|
|
|
case SBM_GETRANGE:
|
|
*(LPINT)wParam = pSBWnd->SBCalc.posMin;
|
|
*(LPINT)lParam = pSBWnd->SBCalc.posMax;
|
|
// This message does not return a value.
|
|
return 0;
|
|
|
|
case SBM_ENABLE_ARROWS:
|
|
return EnableScrollBar( Wnd, SB_CTL, wParam );
|
|
|
|
case SBM_SETPOS:
|
|
{
|
|
ScrollInfo.cbSize = sizeof(SCROLLINFO);
|
|
ScrollInfo.fMask = SIF_POS|SIF_PREVIOUSPOS;
|
|
ScrollInfo.nPos = wParam;
|
|
return IntSetScrollInfo(Wnd, &ScrollInfo, lParam);
|
|
}
|
|
|
|
case SBM_SETRANGEREDRAW:
|
|
case SBM_SETRANGE:
|
|
{
|
|
ScrollInfo.cbSize = sizeof(SCROLLINFO);
|
|
ScrollInfo.fMask = SIF_RANGE|SIF_PREVIOUSPOS;
|
|
ScrollInfo.nMin = wParam;
|
|
ScrollInfo.nMax = lParam;
|
|
return IntSetScrollInfo(Wnd, &ScrollInfo, Msg == SBM_SETRANGEREDRAW ? TRUE : FALSE);
|
|
}
|
|
|
|
case SBM_SETSCROLLINFO:
|
|
return IntSetScrollInfo(Wnd, (LPCSCROLLINFO)lParam, wParam);
|
|
|
|
case SBM_GETSCROLLINFO:
|
|
{
|
|
PSBDATA pSBData = (PSBDATA)&pSBWnd->SBCalc;
|
|
DWORD ret = NtUserSBGetParms(Wnd, SB_CTL, pSBData, (SCROLLINFO *) lParam);
|
|
if (!ret)
|
|
{
|
|
ERR("SBM_GETSCROLLINFO No ScrollInfo\n");
|
|
}
|
|
return ret;
|
|
}
|
|
case SBM_GETSCROLLBARINFO:
|
|
((PSCROLLBARINFO)lParam)->cbSize = sizeof(SCROLLBARINFO);
|
|
return NtUserGetScrollBarInfo(Wnd, OBJID_CLIENT, (PSCROLLBARINFO)lParam);
|
|
|
|
case 0x00e5:
|
|
case 0x00e7:
|
|
case 0x00e8:
|
|
case 0x00ec:
|
|
case 0x00ed:
|
|
case 0x00ee:
|
|
case 0x00ef:
|
|
WARN("unknown Win32 msg %04x wp=%08lx lp=%08lx\n",
|
|
Msg, wParam, lParam );
|
|
break;
|
|
|
|
default:
|
|
if (WM_USER <= Msg)
|
|
{
|
|
WARN("unknown msg %04x wp=%04lx lp=%08lx\n", Msg, wParam, lParam);
|
|
}
|
|
if (unicode)
|
|
return DefWindowProcW( Wnd, Msg, wParam, lParam );
|
|
else
|
|
return DefWindowProcA( Wnd, Msg, wParam, lParam );
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
LRESULT WINAPI
|
|
ScrollBarWndProcW(HWND Wnd, UINT Msg, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
return ScrollBarWndProc_common(DefWindowProcW, Wnd, Msg, wParam, lParam, TRUE);
|
|
}
|
|
|
|
LRESULT WINAPI
|
|
ScrollBarWndProcA(HWND Wnd, UINT Msg, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
return ScrollBarWndProc_common(DefWindowProcA, Wnd, Msg, wParam, lParam, FALSE);
|
|
}
|
|
|
|
|
|
/* PUBLIC FUNCTIONS ***********************************************************/
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
BOOL
|
|
WINAPI
|
|
DECLSPEC_HOTPATCH
|
|
EnableScrollBar( HWND hwnd, UINT nBar, UINT flags )
|
|
{
|
|
BOOL Hook, Ret = FALSE;
|
|
|
|
LoadUserApiHook();
|
|
|
|
Hook = BeginIfHookedUserApiHook();
|
|
|
|
/* Bypass SEH and go direct. */
|
|
if (!Hook)
|
|
{
|
|
Ret = NtUserEnableScrollBar(hwnd, nBar, flags);
|
|
if (!Ret) return Ret;
|
|
SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
|
|
return Ret;
|
|
}
|
|
_SEH2_TRY
|
|
{
|
|
Ret = guah.EnableScrollBar(hwnd, nBar, flags);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
ERR("Got exception in hooked EnableScrollBar!\n");
|
|
}
|
|
_SEH2_END;
|
|
|
|
EndUserApiHook();
|
|
|
|
return Ret;
|
|
}
|
|
|
|
BOOL WINAPI
|
|
RealGetScrollInfo(HWND Wnd, INT SBType, LPSCROLLINFO Info)
|
|
{
|
|
PWND pWnd;
|
|
PSBDATA pSBData;
|
|
|
|
if (SB_CTL == SBType)
|
|
{
|
|
return SendMessageW(Wnd, SBM_GETSCROLLINFO, 0, (LPARAM) Info);
|
|
}
|
|
|
|
pWnd = ValidateHwnd(Wnd);
|
|
if (!pWnd) return FALSE;
|
|
|
|
if (SBType < SB_HORZ || SBType > SB_VERT)
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
if (!pWnd->pSBInfo)
|
|
{
|
|
SetLastError(ERROR_NO_SCROLLBARS);
|
|
return FALSE;
|
|
}
|
|
pSBData = IntGetSBData(pWnd, SBType);
|
|
return NtUserSBGetParms(Wnd, SBType, pSBData, Info);
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
BOOL WINAPI GetScrollBarInfo( _In_ HWND hwnd, _In_ LONG idObject, _Inout_ LPSCROLLBARINFO info)
|
|
{
|
|
BOOL Ret;
|
|
PWND pWnd = ValidateHwnd(hwnd);
|
|
TRACE("hwnd=%p idObject=%d info=%p\n", hwnd, idObject, info);
|
|
if (!pWnd) return FALSE;
|
|
Ret = NtUserGetScrollBarInfo(hwnd, idObject, info); // This will be fixed once SB is server side.
|
|
/* rcScrollBar needs to be in screen coordinates */
|
|
OffsetRect( &(info->rcScrollBar), pWnd->rcWindow.left, pWnd->rcWindow.top );
|
|
return Ret;
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
BOOL
|
|
WINAPI
|
|
DECLSPEC_HOTPATCH
|
|
GetScrollInfo(HWND Wnd, INT SBType, LPSCROLLINFO Info)
|
|
{
|
|
BOOL Hook, Ret = FALSE;
|
|
|
|
LoadUserApiHook();
|
|
|
|
Hook = BeginIfHookedUserApiHook();
|
|
|
|
/* Bypass SEH and go direct. */
|
|
if (!Hook) return RealGetScrollInfo(Wnd, SBType, Info);
|
|
|
|
_SEH2_TRY
|
|
{
|
|
Ret = guah.GetScrollInfo(Wnd, SBType, Info);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
ERR("Got exception in hooked GetScrollInfo!\n");
|
|
}
|
|
_SEH2_END;
|
|
|
|
EndUserApiHook();
|
|
|
|
return Ret;
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
INT
|
|
WINAPI
|
|
DECLSPEC_HOTPATCH
|
|
GetScrollPos(HWND Wnd, INT Bar)
|
|
{
|
|
PWND pwnd;
|
|
PSBDATA pSBData;
|
|
|
|
TRACE("Wnd=%p Bar=%d\n", Wnd, Bar);
|
|
|
|
/* Refer SB_CTL requests to the window */
|
|
if (SB_CTL == Bar)
|
|
{
|
|
return SendMessageW(Wnd, SBM_GETPOS, (WPARAM) 0, (LPARAM) 0);
|
|
}
|
|
else if (Bar == SB_HORZ || Bar == SB_VERT )
|
|
{
|
|
pwnd = ValidateHwnd(Wnd);
|
|
if (!pwnd) return 0;
|
|
|
|
if (pwnd->pSBInfo)
|
|
{
|
|
pSBData = IntGetSBData(pwnd, Bar);
|
|
return pSBData->pos;
|
|
}
|
|
|
|
SetLastError(ERROR_NO_SCROLLBARS);
|
|
TRACE("GetScrollPos No Scroll Info\n");
|
|
return 0;
|
|
}
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
BOOL
|
|
WINAPI
|
|
DECLSPEC_HOTPATCH
|
|
GetScrollRange(HWND Wnd, int Bar, LPINT MinPos, LPINT MaxPos)
|
|
{
|
|
PWND pwnd;
|
|
PSBDATA pSBData;
|
|
|
|
TRACE("Wnd=%x Bar=%d Min=%p Max=%p\n", Wnd, Bar, MinPos, MaxPos);
|
|
|
|
/* Refer SB_CTL requests to the window */
|
|
if (SB_CTL == Bar)
|
|
{
|
|
return SendMessageW(Wnd, SBM_GETRANGE, (WPARAM) MinPos, (LPARAM) MaxPos);
|
|
}
|
|
else if (Bar == SB_HORZ || Bar == SB_VERT )
|
|
{
|
|
pwnd = ValidateHwnd(Wnd);
|
|
if (!pwnd) return FALSE;
|
|
|
|
if (pwnd->pSBInfo)
|
|
{
|
|
pSBData = IntGetSBData(pwnd, Bar);
|
|
*MinPos = pSBData->posMin;
|
|
*MaxPos = pSBData->posMax;
|
|
}
|
|
else
|
|
{
|
|
SetLastError(ERROR_NO_SCROLLBARS);
|
|
*MinPos = 0;
|
|
*MaxPos = 0;
|
|
}
|
|
return TRUE;
|
|
}
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
INT WINAPI
|
|
RealSetScrollInfo(HWND Wnd, int SBType, LPCSCROLLINFO Info, BOOL bRedraw)
|
|
{
|
|
if (SB_CTL == SBType)
|
|
{
|
|
return SendMessageW(Wnd, SBM_SETSCROLLINFO, (WPARAM) bRedraw, (LPARAM) Info);
|
|
}
|
|
else
|
|
{
|
|
return NtUserSetScrollInfo(Wnd, SBType, Info, bRedraw);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
INT
|
|
WINAPI
|
|
DECLSPEC_HOTPATCH
|
|
SetScrollInfo(HWND Wnd, int SBType, LPCSCROLLINFO Info, BOOL bRedraw)
|
|
{
|
|
BOOL Hook;
|
|
INT Ret = 0;
|
|
|
|
LoadUserApiHook();
|
|
|
|
Hook = BeginIfHookedUserApiHook();
|
|
|
|
/* Bypass SEH and go direct. */
|
|
if (!Hook) return RealSetScrollInfo(Wnd, SBType, Info, bRedraw);
|
|
|
|
_SEH2_TRY
|
|
{
|
|
Ret = guah.SetScrollInfo(Wnd, SBType, Info, bRedraw);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
ERR("Got exception in hooked SetScrollInfo!\n");
|
|
}
|
|
_SEH2_END;
|
|
|
|
EndUserApiHook();
|
|
|
|
return Ret;
|
|
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
INT
|
|
WINAPI
|
|
DECLSPEC_HOTPATCH
|
|
SetScrollPos(HWND hWnd, INT nBar, INT nPos, BOOL bRedraw)
|
|
{
|
|
SCROLLINFO ScrollInfo;
|
|
|
|
ScrollInfo.cbSize = sizeof(SCROLLINFO);
|
|
ScrollInfo.fMask = SIF_POS|SIF_PREVIOUSPOS;
|
|
ScrollInfo.nPos = nPos;
|
|
|
|
return SetScrollInfo(hWnd, nBar, &ScrollInfo, bRedraw);
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
BOOL
|
|
WINAPI
|
|
DECLSPEC_HOTPATCH
|
|
SetScrollRange(HWND hWnd, INT nBar, INT nMinPos, INT nMaxPos, BOOL bRedraw)
|
|
{
|
|
PWND pWnd;
|
|
SCROLLINFO ScrollInfo;
|
|
|
|
pWnd = ValidateHwnd(hWnd);
|
|
if ( !pWnd ) return FALSE;
|
|
|
|
if (((LONGLONG)nMaxPos - nMinPos) > MAXLONG)
|
|
{
|
|
SetLastError(ERROR_INVALID_SCROLLBAR_RANGE);
|
|
return FALSE;
|
|
}
|
|
|
|
ScrollInfo.cbSize = sizeof(SCROLLINFO);
|
|
ScrollInfo.fMask = SIF_RANGE;
|
|
ScrollInfo.nMin = nMinPos;
|
|
ScrollInfo.nMax = nMaxPos;
|
|
SetScrollInfo(hWnd, nBar, &ScrollInfo, bRedraw); // do not bypass themes.
|
|
return TRUE;
|
|
}
|