| // Copyright 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "cc/resources/content_layer_updater.h" |
| |
| #include "base/debug/trace_event.h" |
| #include "base/time/time.h" |
| #include "cc/debug/rendering_stats_instrumentation.h" |
| #include "cc/resources/layer_painter.h" |
| #include "third_party/skia/include/core/SkCanvas.h" |
| #include "third_party/skia/include/core/SkPaint.h" |
| #include "third_party/skia/include/core/SkRect.h" |
| #include "third_party/skia/include/core/SkScalar.h" |
| #include "ui/gfx/rect_conversions.h" |
| #include "ui/gfx/rect_f.h" |
| |
| namespace cc { |
| |
| ContentLayerUpdater::ContentLayerUpdater( |
| scoped_ptr<LayerPainter> painter, |
| RenderingStatsInstrumentation* stats_instrumentation, |
| int layer_id) |
| : rendering_stats_instrumentation_(stats_instrumentation), |
| layer_id_(layer_id), |
| painter_(painter.Pass()) {} |
| |
| ContentLayerUpdater::~ContentLayerUpdater() {} |
| |
| void ContentLayerUpdater::set_rendering_stats_instrumentation( |
| RenderingStatsInstrumentation* rsi) { |
| rendering_stats_instrumentation_ = rsi; |
| } |
| |
| void ContentLayerUpdater::PaintContents(SkCanvas* canvas, |
| gfx::Rect content_rect, |
| float contents_width_scale, |
| float contents_height_scale, |
| gfx::Rect* resulting_opaque_rect) { |
| TRACE_EVENT0("cc", "ContentLayerUpdater::PaintContents"); |
| canvas->save(); |
| canvas->translate(SkFloatToScalar(-content_rect.x()), |
| SkFloatToScalar(-content_rect.y())); |
| |
| gfx::Rect layer_rect = content_rect; |
| |
| if (contents_width_scale != 1.f || contents_height_scale != 1.f) { |
| canvas->scale(SkFloatToScalar(contents_width_scale), |
| SkFloatToScalar(contents_height_scale)); |
| |
| layer_rect = gfx::ScaleToEnclosingRect( |
| content_rect, 1.f / contents_width_scale, 1.f / contents_height_scale); |
| } |
| |
| SkPaint paint; |
| paint.setAntiAlias(false); |
| paint.setXfermodeMode(SkXfermode::kClear_Mode); |
| SkRect layer_sk_rect = SkRect::MakeXYWH( |
| layer_rect.x(), layer_rect.y(), layer_rect.width(), layer_rect.height()); |
| canvas->drawRect(layer_sk_rect, paint); |
| canvas->clipRect(layer_sk_rect); |
| |
| gfx::RectF opaque_layer_rect; |
| painter_->Paint(canvas, layer_rect, &opaque_layer_rect); |
| canvas->restore(); |
| |
| gfx::Rect opaque_content_rect = gfx::ToEnclosedRect(gfx::ScaleRect( |
| opaque_layer_rect, contents_width_scale, contents_height_scale)); |
| *resulting_opaque_rect = opaque_content_rect; |
| |
| content_rect_ = content_rect; |
| } |
| |
| } // namespace cc |