From fb10ec5bbf081bed3de8dbf298d937562a63fb5d Mon Sep 17 00:00:00 2001 From: "xiyuan@chromium.org" Date: Mon, 24 Oct 2011 17:54:20 +0000 Subject: [Aura] Support transparent webkit. Support turning on webkit transparency by setting a background image. - Update RenderWidget::PaintRect to handle background transparency; - Update BackingStoreSkia::PaintToBackingStore to handle webkit transparency; - Turn on compositing of RenderWidgetHostViewAura's layer when we set a background with transparency; BUG=98311 TEST=Verify when applist change (chromium:98308) is in. Review URL: http://codereview.chromium.org/8369006 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@106943 0039d316-1c4b-4281-b951-d872f2087c98 --- content/renderer/render_widget.cc | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'content/renderer') diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc index b7b1605..97eac4c 100644 --- a/content/renderer/render_widget.cc +++ b/content/renderer/render_widget.cc @@ -534,8 +534,19 @@ void RenderWidget::PaintRect(const gfx::Rect& rect, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode); paint.setShader(shader)->unref(); - paint.setXfermodeMode(SkXfermode::kSrcOver_Mode); + + // Use kSrc_Mode to handle background_ transparency properly. + paint.setXfermodeMode(SkXfermode::kSrc_Mode); + + // Canvas could contain multiple update rects. Clip to given rect so that + // we don't accidentally clear other update rects. + canvas->save(); + SkRect clip; + clip.set(SkIntToScalar(rect.x()), SkIntToScalar(rect.y()), + SkIntToScalar(rect.right()), SkIntToScalar(rect.bottom())); + canvas->clipRect(clip); canvas->drawPaint(paint); + canvas->restore(); } // First see if this rect is a plugin that can paint itself faster. -- cgit v1.1