ScrollbarThemeChromiumLinux.cpp [plain text]
#include "config.h"
#include "ScrollbarThemeChromium.h"
#include "NotImplemented.h"
#include "PlatformContextSkia.h"
#include "PlatformMouseEvent.h"
#include "Scrollbar.h"
#include "TransformationMatrix.h"
#include "gtkdrawing.h"
#include <gtk/gtk.h>
#include "skia/ext/GdkSkia.h"
namespace WebCore {
int ScrollbarThemeChromium::scrollbarThickness(ScrollbarControlSize controlSize)
{
static int size = 0;
if (!size) {
MozGtkScrollbarMetrics metrics;
moz_gtk_get_scrollbar_metrics(&metrics);
size = metrics.slider_width;
}
return size;
}
bool ScrollbarThemeChromium::invalidateOnMouseEnterExit()
{
notImplemented();
return false;
}
static void initMozState(GtkWidgetState* mozState)
{
mozState->active = true;
mozState->focused = false;
mozState->inHover = false;
mozState->disabled = false;
mozState->isDefault = false;
mozState->canDefault = false;
mozState->depressed = false;
mozState->curpos = 0;
mozState->maxpos = 0;
}
static void paintScrollbarWidget(GraphicsContext* gc, const IntRect& rect,
GtkThemeWidgetType widget_type, gint flags)
{
PlatformContextSkia* pcs = gc->platformContext();
GdkRectangle gdkRect = { rect.x(), rect.y(), rect.width(), rect.height() };
const SkIRect clip_region = pcs->canvas()->getTotalClip().getBounds();
TransformationMatrix ctm = gc->getCTM().inverse();
IntPoint pos = ctm.mapPoint(
IntPoint(SkScalarRound(clip_region.fLeft), SkScalarRound(clip_region.fTop)));
GdkRectangle gdkClipRect;
gdkClipRect.x = pos.x();
gdkClipRect.y = pos.y();
gdkClipRect.width = clip_region.width();
gdkClipRect.height = clip_region.height();
gdk_rectangle_intersect(&gdkRect, &gdkClipRect, &gdkClipRect);
GtkWidgetState mozState;
initMozState(&mozState);
moz_gtk_widget_paint(widget_type, pcs->gdk_skia(), &gdkRect, &gdkClipRect,
&mozState, flags, GTK_TEXT_DIR_LTR);
}
void ScrollbarThemeChromium::paintTrackPiece(GraphicsContext* gc, Scrollbar* scrollbar,
const IntRect& rect, ScrollbarPart partType)
{
const bool horz = scrollbar->orientation() == HorizontalScrollbar;
const GtkThemeWidgetType track_type =
horz ? MOZ_GTK_SCROLLBAR_TRACK_HORIZONTAL : MOZ_GTK_SCROLLBAR_TRACK_VERTICAL;
paintScrollbarWidget(gc, rect, track_type, 0);
}
void ScrollbarThemeChromium::paintButton(GraphicsContext* gc, Scrollbar* scrollbar,
const IntRect& rect, ScrollbarPart part)
{
SkPaint paint;
paint.setARGB(255, 0, 255, 128);
SkRect skrect;
skrect.set(rect.x(), rect.y(), rect.x() + rect.width() - 1, rect.y() + rect.height() - 1);
gc->platformContext()->canvas()->drawRect(skrect, paint);
const bool horz = scrollbar->orientation() == HorizontalScrollbar;
gint flags = horz ? 0 : MOZ_GTK_STEPPER_VERTICAL;
flags |= ForwardButtonEndPart == part ? MOZ_GTK_STEPPER_DOWN : 0;
paintScrollbarWidget(gc, rect, MOZ_GTK_SCROLLBAR_BUTTON, flags);
}
void ScrollbarThemeChromium::paintThumb(GraphicsContext* gc, Scrollbar* scrollbar, const IntRect& rect)
{
const bool horz = scrollbar->orientation() == HorizontalScrollbar;
const GtkThemeWidgetType thumb_type =
horz ? MOZ_GTK_SCROLLBAR_THUMB_HORIZONTAL : MOZ_GTK_SCROLLBAR_THUMB_VERTICAL;
paintScrollbarWidget(gc, rect, thumb_type, 0);
}
}