308 lines
12 KiB
C
308 lines
12 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, INT arrowsize,
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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, 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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if (IsThemeBackgroundPartiallyTransparent(theme, SBP_SIZEBOX, state))
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DrawThemeParentBackground(hwnd, dc, NULL);
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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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RECT partrect;
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SIZE grippersize;
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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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if (bar == SB_CTL && IsThemeBackgroundPartiallyTransparent(theme, SBP_ARROWBTN, uparrowstate))
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DrawThemeParentBackground(hwnd, dc, &partrect);
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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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if (bar == SB_CTL && IsThemeBackgroundPartiallyTransparent(theme, SBP_ARROWBTN, downarrowstate))
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DrawThemeParentBackground(hwnd, dc, &partrect);
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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 && IsThemeBackgroundPartiallyTransparent(theme, SBP_UPPERTRACKVERT, uppertrackstate))
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DrawThemeParentBackground(hwnd, dc, &partrect);
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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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if (bar == SB_CTL && IsThemeBackgroundPartiallyTransparent(theme, SBP_THUMBBTNVERT, thumbstate))
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DrawThemeParentBackground(hwnd, dc, &partrect);
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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 && IsThemeBackgroundPartiallyTransparent(theme, SBP_LOWERTRACKVERT, lowertrackstate))
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DrawThemeParentBackground(hwnd, dc, &partrect);
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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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if (bar == SB_CTL && IsThemeBackgroundPartiallyTransparent(theme, SBP_ARROWBTN, leftarrowstate))
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DrawThemeParentBackground(hwnd, dc, &partrect);
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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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if (bar == SB_CTL && IsThemeBackgroundPartiallyTransparent(theme, SBP_ARROWBTN, rightarrowstate))
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DrawThemeParentBackground(hwnd, dc, &partrect);
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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 && IsThemeBackgroundPartiallyTransparent(theme, SBP_UPPERTRACKHORZ, uppertrackstate))
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DrawThemeParentBackground(hwnd, dc, &partrect);
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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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if (bar == SB_CTL && IsThemeBackgroundPartiallyTransparent(theme, SBP_THUMBBTNHORZ, thumbstate))
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DrawThemeParentBackground(hwnd, dc, &partrect);
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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 && IsThemeBackgroundPartiallyTransparent(theme, SBP_LOWERTRACKHORZ, lowertrackstate))
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DrawThemeParentBackground(hwnd, dc, &partrect);
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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, %lu, %lu, %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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