1 // Copyright 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "webkit/renderer/compositor_bindings/web_content_layer_impl.h" 6 7 #include "base/command_line.h" 8 #include "cc/base/switches.h" 9 #include "cc/layers/content_layer.h" 10 #include "cc/layers/picture_layer.h" 11 #include "third_party/WebKit/public/platform/WebContentLayerClient.h" 12 #include "third_party/WebKit/public/platform/WebFloatPoint.h" 13 #include "third_party/WebKit/public/platform/WebFloatRect.h" 14 #include "third_party/WebKit/public/platform/WebRect.h" 15 #include "third_party/WebKit/public/platform/WebSize.h" 16 #include "third_party/skia/include/utils/SkMatrix44.h" 17 18 using cc::ContentLayer; 19 using cc::PictureLayer; 20 21 namespace webkit { 22 usingPictureLayer()23static bool usingPictureLayer() { 24 return cc::switches::IsImplSidePaintingEnabled(); 25 } 26 WebContentLayerImpl(blink::WebContentLayerClient * client)27WebContentLayerImpl::WebContentLayerImpl(blink::WebContentLayerClient* client) 28 : client_(client), 29 ignore_lcd_text_change_(false) { 30 if (usingPictureLayer()) 31 layer_ = make_scoped_ptr(new WebLayerImpl(PictureLayer::Create(this))); 32 else 33 layer_ = make_scoped_ptr(new WebLayerImpl(ContentLayer::Create(this))); 34 layer_->layer()->SetIsDrawable(true); 35 can_use_lcd_text_ = layer_->layer()->can_use_lcd_text(); 36 } 37 ~WebContentLayerImpl()38WebContentLayerImpl::~WebContentLayerImpl() { 39 if (usingPictureLayer()) 40 static_cast<PictureLayer*>(layer_->layer())->ClearClient(); 41 else 42 static_cast<ContentLayer*>(layer_->layer())->ClearClient(); 43 } 44 layer()45blink::WebLayer* WebContentLayerImpl::layer() { return layer_.get(); } 46 setDoubleSided(bool double_sided)47void WebContentLayerImpl::setDoubleSided(bool double_sided) { 48 layer_->layer()->SetDoubleSided(double_sided); 49 } 50 setDrawCheckerboardForMissingTiles(bool enable)51void WebContentLayerImpl::setDrawCheckerboardForMissingTiles(bool enable) { 52 layer_->layer()->SetDrawCheckerboardForMissingTiles(enable); 53 } 54 PaintContents(SkCanvas * canvas,gfx::Rect clip,gfx::RectF * opaque)55void WebContentLayerImpl::PaintContents(SkCanvas* canvas, 56 gfx::Rect clip, 57 gfx::RectF* opaque) { 58 if (!client_) 59 return; 60 61 blink::WebFloatRect web_opaque; 62 // For picture layers, always record with LCD text. PictureLayerImpl 63 // will turn this off later during rasterization. 64 bool use_lcd_text = usingPictureLayer() || can_use_lcd_text_; 65 client_->paintContents(canvas, clip, use_lcd_text, web_opaque); 66 *opaque = web_opaque; 67 } 68 DidChangeLayerCanUseLCDText()69void WebContentLayerImpl::DidChangeLayerCanUseLCDText() { 70 // It is important to make this comparison because the LCD text status 71 // here can get out of sync with that in the layer. 72 if (can_use_lcd_text_ == layer_->layer()->can_use_lcd_text()) 73 return; 74 75 // LCD text cannot be enabled once disabled. 76 if (layer_->layer()->can_use_lcd_text() && ignore_lcd_text_change_) 77 return; 78 79 can_use_lcd_text_ = layer_->layer()->can_use_lcd_text(); 80 ignore_lcd_text_change_ = true; 81 layer_->invalidate(); 82 } 83 84 } // namespace webkit 85