void ScrollbarThemeWin::paintTrackPiece(GraphicsContext& context, Scrollbar& scrollbar, const IntRect& rect, ScrollbarPart partType)
{
checkAndInitScrollbarTheme();
bool start = partType == BackTrackPart;
int part;
if (scrollbar.orientation() == HorizontalScrollbar)
part = start ? SP_TRACKSTARTHOR : SP_TRACKENDHOR;
else
part = start ? SP_TRACKSTARTVERT : SP_TRACKENDVERT;
int state;
if (!scrollbar.enabled())
state = TS_DISABLED;
else if ((scrollbar.hoveredPart() == BackTrackPart && start) ||
(scrollbar.hoveredPart() == ForwardTrackPart && !start))
state = (scrollbar.pressedPart() == scrollbar.hoveredPart() ? TS_ACTIVE : TS_HOVER);
else
state = TS_NORMAL;
bool alphaBlend = false;
if (scrollbarTheme)
alphaBlend = IsThemeBackgroundPartiallyTransparent(scrollbarTheme, part, state);
LocalWindowsContext windowsContext(context, rect, alphaBlend);
RECT themeRect(rect);
if (scrollbarTheme)
DrawThemeBackground(scrollbarTheme, windowsContext.hdc(), part, state, &themeRect, 0);
else {
DWORD color3DFace = ::GetSysColor(COLOR_3DFACE);
DWORD colorScrollbar = ::GetSysColor(COLOR_SCROLLBAR);
DWORD colorWindow = ::GetSysColor(COLOR_WINDOW);
HDC hdc = windowsContext.hdc();
if ((color3DFace != colorScrollbar) && (colorWindow != colorScrollbar))
::FillRect(hdc, &themeRect, HBRUSH(COLOR_SCROLLBAR+1));
else {
static WORD patternBits[8] = { 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55 };
auto patternBitmap = adoptGDIObject(::CreateBitmap(8, 8, 1, 1, patternBits));
auto brush = adoptGDIObject(::CreatePatternBrush(patternBitmap.get()));
SaveDC(hdc);
::SetTextColor(hdc, ::GetSysColor(COLOR_3DHILIGHT));
::SetBkColor(hdc, ::GetSysColor(COLOR_3DFACE));
::SetBrushOrgEx(hdc, rect.x(), rect.y(), NULL);
::SelectObject(hdc, brush.get());
::FillRect(hdc, &themeRect, brush.get());
::RestoreDC(hdc, -1);
}
}
if (!alphaBlend && !context.isInTransparencyLayer())
DIBPixelData::setRGBABitmapAlpha(windowsContext.hdc(), rect, 255);
}
void ScrollbarThemeWin::paintButton(GraphicsContext& context, Scrollbar& scrollbar, const IntRect& rect, ScrollbarPart part)
{
checkAndInitScrollbarTheme();
bool start = (part == BackButtonStartPart);
int xpState = 0;
int classicState = 0;
if (scrollbar.orientation() == HorizontalScrollbar)
xpState = start ? TS_LEFT_BUTTON : TS_RIGHT_BUTTON;
else
xpState = start ? TS_UP_BUTTON : TS_DOWN_BUTTON;
classicState = xpState / 4;
if (!scrollbar.enabled()) {
xpState += TS_DISABLED;
classicState |= DFCS_INACTIVE;
} else if ((scrollbar.hoveredPart() == BackButtonStartPart && start) ||
(scrollbar.hoveredPart() == ForwardButtonEndPart && !start)) {
if (scrollbar.pressedPart() == scrollbar.hoveredPart()) {
xpState += TS_ACTIVE;
classicState |= DFCS_PUSHED;
classicState |= DFCS_FLAT;
} else
xpState += TS_HOVER;
} else {
if (scrollbar.hoveredPart() == NoPart || !runningVista)
xpState += TS_NORMAL;
else {
if (scrollbar.orientation() == HorizontalScrollbar)
xpState = start ? TS_LEFT_BUTTON_HOVER : TS_RIGHT_BUTTON_HOVER;
else
xpState = start ? TS_UP_BUTTON_HOVER : TS_DOWN_BUTTON_HOVER;
}
}
bool alphaBlend = false;
if (scrollbarTheme)
alphaBlend = IsThemeBackgroundPartiallyTransparent(scrollbarTheme, SP_BUTTON, xpState);
LocalWindowsContext windowsContext(context, rect, alphaBlend);
RECT themeRect(rect);
if (scrollbarTheme)
DrawThemeBackground(scrollbarTheme, windowsContext.hdc(), SP_BUTTON, xpState, &themeRect, 0);
else
::DrawFrameControl(windowsContext.hdc(), &themeRect, DFC_SCROLL, classicState);
if (!alphaBlend && !context.isInTransparencyLayer())
DIBPixelData::setRGBABitmapAlpha(windowsContext.hdc(), rect, 255);
}
void ScrollbarThemeAura::paintTrackPiece(GraphicsContext& gc,
const Scrollbar& scrollbar,
const IntRect& rect,
ScrollbarPart partType) {
DisplayItem::Type displayItemType = trackPiecePartToDisplayItemType(partType);
if (DrawingRecorder::useCachedDrawingIfPossible(gc, scrollbar,
displayItemType))
return;
DrawingRecorder recorder(gc, scrollbar, displayItemType, rect);
WebThemeEngine::State state = scrollbar.hoveredPart() == partType
? WebThemeEngine::StateHover
: WebThemeEngine::StateNormal;
if (useMockTheme() && !scrollbar.enabled())
state = WebThemeEngine::StateDisabled;
IntRect alignRect = trackRect(scrollbar, false);
WebThemeEngine::ExtraParams extraParams;
extraParams.scrollbarTrack.isBack = (partType == BackTrackPart);
extraParams.scrollbarTrack.trackX = alignRect.x();
extraParams.scrollbarTrack.trackY = alignRect.y();
extraParams.scrollbarTrack.trackWidth = alignRect.width();
extraParams.scrollbarTrack.trackHeight = alignRect.height();
Platform::current()->themeEngine()->paint(
gc.canvas(), scrollbar.orientation() == HorizontalScrollbar
? WebThemeEngine::PartScrollbarHorizontalTrack
: WebThemeEngine::PartScrollbarVerticalTrack,
state, WebRect(rect), &extraParams);
}
void ScrollbarThemeWin::paintThumb(GraphicsContext& context, Scrollbar& scrollbar, const IntRect& rect)
{
checkAndInitScrollbarTheme();
int state;
if (!scrollbar.enabled())
state = TS_DISABLED;
else if (scrollbar.pressedPart() == ThumbPart)
state = TS_ACTIVE; // Thumb always stays active once pressed.
else if (scrollbar.hoveredPart() == ThumbPart)
state = TS_HOVER;
else
state = TS_NORMAL;
bool alphaBlend = false;
if (scrollbarTheme)
alphaBlend = IsThemeBackgroundPartiallyTransparent(scrollbarTheme, scrollbar.orientation() == HorizontalScrollbar ? SP_THUMBHOR : SP_THUMBVERT, state);
LocalWindowsContext windowsContext(context, rect, alphaBlend);
RECT themeRect(rect);
if (scrollbarTheme) {
DrawThemeBackground(scrollbarTheme, windowsContext.hdc(), scrollbar.orientation() == HorizontalScrollbar ? SP_THUMBHOR : SP_THUMBVERT, state, &themeRect, 0);
paintGripper(scrollbar, windowsContext.hdc(), gripperRect(scrollbarThickness(), rect));
} else
::DrawEdge(windowsContext.hdc(), &themeRect, EDGE_RAISED, BF_RECT | BF_MIDDLE);
if (!alphaBlend && !context.isInTransparencyLayer())
DIBPixelData::setRGBABitmapAlpha(windowsContext.hdc(), rect, 255);
}
static void paintGripper(Scrollbar& scrollbar, HDC hdc, const IntRect& rect)
{
if (!scrollbarTheme)
return; // Classic look has no gripper.
int state;
if (!scrollbar.enabled())
state = TS_DISABLED;
else if (scrollbar.pressedPart() == ThumbPart)
state = TS_ACTIVE; // Thumb always stays active once pressed.
else if (scrollbar.hoveredPart() == ThumbPart)
state = TS_HOVER;
else
state = TS_NORMAL;
RECT themeRect(rect);
DrawThemeBackground(scrollbarTheme, hdc, scrollbar.orientation() == HorizontalScrollbar ? SP_GRIPPERHOR : SP_GRIPPERVERT, state, &themeRect, 0);
}
void ScrollbarThemeAura::paintThumb(GraphicsContext& gc,
const Scrollbar& scrollbar,
const IntRect& rect) {
if (DrawingRecorder::useCachedDrawingIfPossible(gc, scrollbar,
DisplayItem::kScrollbarThumb))
return;
DrawingRecorder recorder(gc, scrollbar, DisplayItem::kScrollbarThumb, rect);
WebThemeEngine::State state;
WebCanvas* canvas = gc.canvas();
if (scrollbar.pressedPart() == ThumbPart)
state = WebThemeEngine::StatePressed;
else if (scrollbar.hoveredPart() == ThumbPart)
state = WebThemeEngine::StateHover;
else
state = WebThemeEngine::StateNormal;
Platform::current()->themeEngine()->paint(
canvas, scrollbar.orientation() == HorizontalScrollbar
? WebThemeEngine::PartScrollbarHorizontalThumb
: WebThemeEngine::PartScrollbarVerticalThumb,
state, WebRect(rect), nullptr);
}