ScrollbarThemeChromiumLinux.cpp [plain text]
#include "config.h"
#include "ScrollbarThemeChromiumLinux.h"
#include "PlatformContextSkia.h"
#include "PlatformMouseEvent.h"
#include "Scrollbar.h"
#include "TransformationMatrix.h"
namespace WebCore {
ScrollbarTheme* ScrollbarTheme::nativeTheme()
{
static ScrollbarThemeChromiumLinux theme;
return &theme;
}
int ScrollbarThemeChromiumLinux::scrollbarThickness(ScrollbarControlSize controlSize)
{
return 15;
}
static void drawVertLine(SkCanvas* canvas, int x, int y1, int y2, const SkPaint& paint)
{
SkIRect skrect;
skrect.set(x, y1, x + 1, y2 + 1);
canvas->drawIRect(skrect, paint);
}
static void drawHorizLine(SkCanvas* canvas, int x1, int x2, int y, const SkPaint& paint)
{
SkIRect skrect;
skrect.set(x1, y, x2 + 1, y + 1);
canvas->drawIRect(skrect, paint);
}
static void drawBox(SkCanvas* canvas, const IntRect& rect, const SkPaint& paint)
{
const int right = rect.x() + rect.width() - 1;
const int bottom = rect.y() + rect.height() - 1;
drawHorizLine(canvas, rect.x(), right, rect.y(), paint);
drawVertLine(canvas, right, rect.y(), bottom, paint);
drawHorizLine(canvas, rect.x(), right, bottom, paint);
drawVertLine(canvas, rect.x(), rect.y(), bottom, paint);
}
IntRect ScrollbarThemeChromium::trackRect(Scrollbar* scrollbar, bool)
{
IntSize bs = buttonSize(scrollbar);
int thickness = scrollbarThickness(scrollbar->controlSize());
if (scrollbar->orientation() == HorizontalScrollbar)
return IntRect(scrollbar->x() + bs.width(), scrollbar->y(), scrollbar->width(), thickness);
return IntRect(scrollbar->x(), scrollbar->y() + bs.height(), thickness, scrollbar->height());
}
void ScrollbarThemeChromiumLinux::paintTrackPiece(GraphicsContext* gc, Scrollbar* scrollbar, const IntRect& rect, ScrollbarPart partType)
{
SkCanvas* const canvas = gc->platformContext()->canvas();
SkPaint paint;
SkIRect skrect;
skrect.set(rect.x(), rect.y(), rect.x() + rect.width(), rect.y() + rect.height());
paint.setARGB(0xff, 0xe3, 0xdd, 0xd8);
canvas->drawIRect(skrect, paint);
paint.setARGB(0xff, 0xc5, 0xba, 0xb0);
drawBox(canvas, rect, paint);
}
void ScrollbarThemeChromiumLinux::paintButton(GraphicsContext* gc, Scrollbar* scrollbar, const IntRect& rect, ScrollbarPart part)
{
}
void ScrollbarThemeChromiumLinux::paintThumb(GraphicsContext* gc, Scrollbar* scrollbar, const IntRect& rect)
{
const bool hovered = scrollbar->hoveredPart() == ThumbPart;
const int midx = rect.x() + rect.width() / 2;
const int midy = rect.y() + rect.height() / 2;
const bool vertical = scrollbar->orientation() == VerticalScrollbar;
SkCanvas* const canvas = gc->platformContext()->canvas();
SkPaint paint;
if (hovered)
paint.setARGB(0xff, 0xff, 0xff, 0xff);
else
paint.setARGB(0xff, 0xf4, 0xf2, 0xef);
SkIRect skrect;
if (vertical)
skrect.set(rect.x(), rect.y(), midx + 1, rect.y() + rect.height());
else
skrect.set(rect.x(), rect.y(), rect.x() + rect.width(), midy + 1);
canvas->drawIRect(skrect, paint);
if (hovered)
paint.setARGB(0xff, 0xf4, 0xf2, 0xef);
else
paint.setARGB(0xff, 0xea, 0xe5, 0xe0);
if (vertical)
skrect.set(midx + 1, rect.y(), rect.x() + rect.width(), rect.y() + rect.height());
else
skrect.set(rect.x(), midy + 1, rect.x() + rect.width(), rect.y() + rect.height());
canvas->drawIRect(skrect, paint);
paint.setARGB(0xff, 0x9d, 0x96, 0x8e);
drawBox(canvas, rect, paint);
if (rect.height() > 10 && rect.width() > 10) {
paint.setARGB(0xff, 0x9d, 0x96, 0x8e);
drawHorizLine(canvas, midx - 1, midx + 3, midy, paint);
drawHorizLine(canvas, midx - 1, midx + 3, midy - 3, paint);
drawHorizLine(canvas, midx - 1, midx + 3, midy + 3, paint);
}
}
bool ScrollbarThemeChromiumLinux::shouldCenterOnThumb(Scrollbar*, const PlatformMouseEvent& evt)
{
return (evt.shiftKey() && evt.button() == LeftButton) || (evt.button() == MiddleButton);
}
IntSize ScrollbarThemeChromiumLinux::buttonSize(Scrollbar* scrollbar)
{
return IntSize(0, 0);
}
int ScrollbarThemeChromiumLinux::minimumThumbLength(Scrollbar* scrollbar)
{
return 2 * scrollbarThickness(scrollbar->controlSize());
}
}