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b9c882a127
This is confirmed by the tests in test_scrollbar() and manual tests on XP. Even though scrollbar
arrows and thumb are in fact transparent, DrawThemeParentBackground() is not called to paint the
parent background, leaving the transparent area untouched. On Windows, even if the scrollbar arrows
are reported to be transparent, the bitmaps for arrow parts in the stock themes are in fact opaque.
Fix Ice Cream Calculator slow scrolling after 4cb229a because the WM_PRINTCLIENT handling in the
application is slow.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53337
302 lines
11 KiB
C
302 lines
11 KiB
C
/*
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* Theming - Scrollbar control
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*
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* Copyright (c) 2015 Mark Harmstone
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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 St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*/
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "uxtheme.h"
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#include "uxthemedll.h"
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#include "vssym32.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(theme_scroll);
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void WINAPI UXTHEME_ScrollBarDraw(HWND hwnd, HDC dc, INT bar, enum SCROLL_HITTEST hit_test,
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const struct SCROLL_TRACKING_INFO *tracking_info,
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BOOL draw_arrows, BOOL draw_interior, RECT *rect, UINT enable_flags,
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INT arrowsize, INT thumbpos, INT thumbsize, BOOL vertical)
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{
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BOOL disabled = !IsWindowEnabled(hwnd);
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HTHEME theme;
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DWORD style;
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if (bar == SB_CTL)
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theme = GetWindowTheme(hwnd);
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else
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theme = OpenThemeDataForDpi(NULL, WC_SCROLLBARW, GetDpiForWindow(hwnd));
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if (!theme)
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{
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user_api.pScrollBarDraw(hwnd, dc, bar, hit_test, tracking_info, draw_arrows, draw_interior,
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rect, enable_flags, arrowsize, thumbpos, thumbsize, vertical);
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return;
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}
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style = GetWindowLongW(hwnd, GWL_STYLE);
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if (bar == SB_CTL && (style & SBS_SIZEBOX || style & SBS_SIZEGRIP)) {
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int state;
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if (style & SBS_SIZEBOXTOPLEFTALIGN)
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state = SZB_TOPLEFTALIGN;
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else
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state = SZB_RIGHTALIGN;
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/* Tests show that COLOR_BTNFACE is used instead of DrawThemeParentBackground() for drawing
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* background */
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FillRect(dc, rect, GetSysColorBrush(COLOR_BTNFACE));
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DrawThemeBackground(theme, dc, SBP_SIZEBOX, state, rect, NULL);
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} else {
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int uppertrackstate, lowertrackstate, thumbstate;
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HBRUSH track_brush = NULL;
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RECT partrect;
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SIZE grippersize;
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if (bar == SB_CTL)
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track_brush = (HBRUSH)SendMessageW(GetParent(hwnd), WM_CTLCOLORSCROLLBAR, (WPARAM)dc, (LPARAM)hwnd);
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if (disabled) {
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uppertrackstate = SCRBS_DISABLED;
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lowertrackstate = SCRBS_DISABLED;
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thumbstate = SCRBS_DISABLED;
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} else {
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uppertrackstate = SCRBS_NORMAL;
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lowertrackstate = SCRBS_NORMAL;
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thumbstate = SCRBS_NORMAL;
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if (vertical == tracking_info->vertical && hit_test == tracking_info->hit_test
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&& GetCapture() == hwnd)
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{
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if (hit_test == SCROLL_TOP_RECT)
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uppertrackstate = SCRBS_PRESSED;
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else if (hit_test == SCROLL_BOTTOM_RECT)
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lowertrackstate = SCRBS_PRESSED;
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else if (hit_test == SCROLL_THUMB)
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thumbstate = SCRBS_PRESSED;
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}
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else
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{
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if (hit_test == SCROLL_TOP_RECT)
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uppertrackstate = SCRBS_HOT;
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else if (hit_test == SCROLL_BOTTOM_RECT)
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lowertrackstate = SCRBS_HOT;
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else if (hit_test == SCROLL_THUMB)
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thumbstate = SCRBS_HOT;
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}
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/* Thumb is also shown as pressed when tracking */
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if (tracking_info->win == hwnd && tracking_info->bar == bar)
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thumbstate = SCRBS_PRESSED;
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}
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if (vertical) {
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int uparrowstate, downarrowstate;
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if (disabled) {
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uparrowstate = ABS_UPDISABLED;
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downarrowstate = ABS_DOWNDISABLED;
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} else {
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uparrowstate = ABS_UPNORMAL;
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downarrowstate = ABS_DOWNNORMAL;
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if (vertical == tracking_info->vertical && hit_test == tracking_info->hit_test
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&& GetCapture() == hwnd)
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{
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if (hit_test == SCROLL_TOP_ARROW)
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uparrowstate = ABS_UPPRESSED;
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else if (hit_test == SCROLL_BOTTOM_ARROW)
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downarrowstate = ABS_DOWNPRESSED;
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}
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else
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{
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if (hit_test == SCROLL_TOP_ARROW)
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uparrowstate = ABS_UPHOT;
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else if (hit_test == SCROLL_BOTTOM_ARROW)
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downarrowstate = ABS_DOWNHOT;
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}
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}
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partrect = *rect;
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partrect.bottom = partrect.top + arrowsize;
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DrawThemeBackground(theme, dc, SBP_ARROWBTN, uparrowstate, &partrect, NULL);
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partrect.bottom = rect->bottom;
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partrect.top = partrect.bottom - arrowsize;
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DrawThemeBackground(theme, dc, SBP_ARROWBTN, downarrowstate, &partrect, NULL);
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if (thumbpos > 0) {
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partrect.top = rect->top + arrowsize;
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partrect.bottom = rect->top + thumbpos;
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if (bar == SB_CTL && track_brush)
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FillRect(dc, &partrect, track_brush);
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else
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DrawThemeBackground(theme, dc, SBP_UPPERTRACKVERT, uppertrackstate, &partrect, NULL);
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}
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if (thumbsize > 0) {
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partrect.top = rect->top + thumbpos;
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partrect.bottom = partrect.top + thumbsize;
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DrawThemeBackground(theme, dc, SBP_THUMBBTNVERT, thumbstate, &partrect, NULL);
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if (SUCCEEDED(GetThemePartSize(theme, dc, SBP_GRIPPERVERT, thumbstate, NULL, TS_DRAW, &grippersize))) {
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MARGINS margins;
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if (SUCCEEDED(GetThemeMargins(theme, dc, SBP_THUMBBTNVERT, thumbstate, TMT_CONTENTMARGINS, &partrect, &margins))) {
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if (grippersize.cy <= (thumbsize - margins.cyTopHeight - margins.cyBottomHeight))
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DrawThemeBackground(theme, dc, SBP_GRIPPERVERT, thumbstate, &partrect, NULL);
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}
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}
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}
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partrect.bottom = rect->bottom - arrowsize;
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if (thumbsize > 0)
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partrect.top = rect->top + thumbpos + thumbsize;
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else
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partrect.top = rect->top + arrowsize;
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if (partrect.bottom > partrect.top)
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{
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if (bar == SB_CTL && track_brush)
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FillRect(dc, &partrect, track_brush);
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else
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DrawThemeBackground(theme, dc, SBP_LOWERTRACKVERT, lowertrackstate, &partrect, NULL);
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}
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} else {
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int leftarrowstate, rightarrowstate;
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if (disabled) {
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leftarrowstate = ABS_LEFTDISABLED;
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rightarrowstate = ABS_RIGHTDISABLED;
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} else {
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leftarrowstate = ABS_LEFTNORMAL;
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rightarrowstate = ABS_RIGHTNORMAL;
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if (vertical == tracking_info->vertical && hit_test == tracking_info->hit_test
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&& GetCapture() == hwnd)
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{
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if (hit_test == SCROLL_TOP_ARROW)
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leftarrowstate = ABS_LEFTPRESSED;
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else if (hit_test == SCROLL_BOTTOM_ARROW)
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rightarrowstate = ABS_RIGHTPRESSED;
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}
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else
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{
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if (hit_test == SCROLL_TOP_ARROW)
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leftarrowstate = ABS_LEFTHOT;
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else if (hit_test == SCROLL_BOTTOM_ARROW)
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rightarrowstate = ABS_RIGHTHOT;
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}
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}
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partrect = *rect;
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partrect.right = partrect.left + arrowsize;
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DrawThemeBackground(theme, dc, SBP_ARROWBTN, leftarrowstate, &partrect, NULL);
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partrect.right = rect->right;
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partrect.left = partrect.right - arrowsize;
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DrawThemeBackground(theme, dc, SBP_ARROWBTN, rightarrowstate, &partrect, NULL);
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if (thumbpos > 0) {
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partrect.left = rect->left + arrowsize;
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partrect.right = rect->left + thumbpos;
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if (bar == SB_CTL && track_brush)
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FillRect(dc, &partrect, track_brush);
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else
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DrawThemeBackground(theme, dc, SBP_UPPERTRACKHORZ, uppertrackstate, &partrect, NULL);
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}
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if (thumbsize > 0) {
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partrect.left = rect->left + thumbpos;
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partrect.right = partrect.left + thumbsize;
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DrawThemeBackground(theme, dc, SBP_THUMBBTNHORZ, thumbstate, &partrect, NULL);
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if (SUCCEEDED(GetThemePartSize(theme, dc, SBP_GRIPPERHORZ, thumbstate, NULL, TS_DRAW, &grippersize))) {
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MARGINS margins;
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if (SUCCEEDED(GetThemeMargins(theme, dc, SBP_THUMBBTNHORZ, thumbstate, TMT_CONTENTMARGINS, &partrect, &margins))) {
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if (grippersize.cx <= (thumbsize - margins.cxLeftWidth - margins.cxRightWidth))
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DrawThemeBackground(theme, dc, SBP_GRIPPERHORZ, thumbstate, &partrect, NULL);
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}
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}
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}
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partrect.right = rect->right - arrowsize;
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if (thumbsize > 0)
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partrect.left = rect->left + thumbpos + thumbsize;
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else
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partrect.left = rect->left + arrowsize;
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if (partrect.right > partrect.left)
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{
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if (bar == SB_CTL && track_brush)
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FillRect(dc, &partrect, track_brush);
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else
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DrawThemeBackground(theme, dc, SBP_LOWERTRACKHORZ, lowertrackstate, &partrect, NULL);
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}
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}
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}
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if (bar != SB_CTL)
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CloseThemeData(theme);
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}
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LRESULT WINAPI UXTHEME_ScrollbarWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam,
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BOOL unicode)
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{
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const WCHAR* themeClass = WC_SCROLLBARW;
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HTHEME theme;
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LRESULT result;
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TRACE("(%p, 0x%x, %Iu, %Iu, %d)\n", hwnd, msg, wParam, lParam, unicode);
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switch (msg) {
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case WM_CREATE:
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result = user_api.pScrollBarWndProc(hwnd, msg, wParam, lParam, unicode);
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OpenThemeData(hwnd, themeClass);
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return result;
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case WM_DESTROY:
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theme = GetWindowTheme(hwnd);
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CloseThemeData(theme);
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return user_api.pScrollBarWndProc(hwnd, msg, wParam, lParam, unicode);
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case WM_THEMECHANGED:
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theme = GetWindowTheme(hwnd);
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CloseThemeData(theme);
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OpenThemeData(hwnd, themeClass);
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InvalidateRect(hwnd, NULL, TRUE);
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break;
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case WM_SYSCOLORCHANGE:
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theme = GetWindowTheme(hwnd);
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if (!theme) return user_api.pScrollBarWndProc(hwnd, msg, wParam, lParam, unicode);
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/* Do nothing. When themed, a WM_THEMECHANGED will be received, too,
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* which will do the repaint. */
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break;
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default:
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return user_api.pScrollBarWndProc(hwnd, msg, wParam, lParam, unicode);
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}
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return 0;
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}
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