Part 8 of cc/ directory shuffles: resources

cc/content_layer_updater.cc

-// 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/content_layer_updater.h"
-
-#include "base/debug/trace_event.h"
-#include "base/time.h"
-#include "cc/debug/rendering_stats.h"
-#include "cc/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)
-    : painter_(painter.Pass()) {}
-
-ContentLayerUpdater::~ContentLayerUpdater() {}
-
-void ContentLayerUpdater::PaintContents(SkCanvas* canvas,
-                                        gfx::Rect content_rect,
-                                        float contents_width_scale,
-                                        float contents_height_scale,
-                                        gfx::Rect* resulting_opaque_rect,
-                                        RenderingStats* stats) {
-  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));
-
-    gfx::RectF rect = gfx::ScaleRect(
-        content_rect, 1.f / contents_width_scale, 1.f / contents_height_scale);
-    layer_rect = gfx::ToEnclosingRect(rect);
-  }
-
-  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;
-  base::TimeTicks paint_begin_time;
-  if (stats)
-    paint_begin_time = base::TimeTicks::Now();
-  painter_->Paint(canvas, layer_rect, &opaque_layer_rect);
-  if (stats) {
-    stats->totalPaintTime += base::TimeTicks::Now() - paint_begin_time;
-    stats->totalPixelsPainted += content_rect.width() * content_rect.height();
-  }
-  canvas->restore();
-
-  gfx::RectF opaque_content_rect = gfx::ScaleRect(
-      opaque_layer_rect, contents_width_scale, contents_height_scale);
-  *resulting_opaque_rect = gfx::ToEnclosedRect(opaque_content_rect);
-
-  content_rect_ = content_rect;
-}
-
-}  // namespace cc