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| 1 // Copyright 2014 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 "cc/resources/filter_display_item.h" | |
| 6 | |
| 7 #include "base/strings/stringprintf.h" | |
| 8 #include "base/trace_event/trace_event_argument.h" | |
| 9 #include "cc/output/render_surface_filters.h" | |
| 10 #include "skia/ext/refptr.h" | |
| 11 #include "third_party/skia/include/core/SkCanvas.h" | |
| 12 #include "third_party/skia/include/core/SkImageFilter.h" | |
| 13 #include "third_party/skia/include/core/SkPaint.h" | |
| 14 #include "third_party/skia/include/core/SkXfermode.h" | |
| 15 #include "ui/gfx/skia_util.h" | |
| 16 | |
| 17 namespace cc { | |
| 18 | |
| 19 FilterDisplayItem::FilterDisplayItem() { | |
| 20 } | |
| 21 | |
| 22 FilterDisplayItem::~FilterDisplayItem() { | |
| 23 } | |
| 24 | |
| 25 void FilterDisplayItem::SetNew(const FilterOperations& filters, | |
| 26 const gfx::RectF& bounds) { | |
| 27 filters_ = filters; | |
| 28 bounds_ = bounds; | |
| 29 | |
| 30 size_t memory_usage = | |
| 31 sizeof(skia::RefPtr<SkImageFilter>) + sizeof(gfx::RectF); | |
| 32 DisplayItem::SetNew(true /* suitable_for_gpu_raster */, 1 /* op_count */, | |
| 33 memory_usage); | |
| 34 } | |
| 35 | |
| 36 void FilterDisplayItem::Raster(SkCanvas* canvas, | |
| 37 SkDrawPictureCallback* callback) const { | |
| 38 canvas->save(); | |
| 39 canvas->translate(bounds_.x(), bounds_.y()); | |
| 40 | |
| 41 skia::RefPtr<SkImageFilter> image_filter = | |
| 42 RenderSurfaceFilters::BuildImageFilter( | |
| 43 filters_, gfx::SizeF(bounds_.width(), bounds_.height())); | |
| 44 SkRect boundaries; | |
| 45 image_filter->computeFastBounds( | |
| 46 SkRect::MakeWH(bounds_.width(), bounds_.height()), &boundaries); | |
| 47 | |
| 48 SkPaint paint; | |
| 49 paint.setXfermodeMode(SkXfermode::kSrcOver_Mode); | |
| 50 paint.setImageFilter(image_filter.get()); | |
| 51 canvas->saveLayer(&boundaries, &paint); | |
| 52 | |
| 53 canvas->translate(-bounds_.x(), -bounds_.y()); | |
| 54 } | |
| 55 | |
| 56 void FilterDisplayItem::AsValueInto( | |
| 57 base::trace_event::TracedValue* array) const { | |
| 58 array->AppendString(base::StringPrintf("FilterDisplayItem bounds: [%s]", | |
| 59 bounds_.ToString().c_str())); | |
| 60 } | |
| 61 | |
| 62 EndFilterDisplayItem::EndFilterDisplayItem() { | |
| 63 DisplayItem::SetNew(true /* suitable_for_gpu_raster */, 0 /* op_count */, | |
| 64 0 /* memory_usage */); | |
| 65 } | |
| 66 | |
| 67 EndFilterDisplayItem::~EndFilterDisplayItem() { | |
| 68 } | |
| 69 | |
| 70 void EndFilterDisplayItem::Raster(SkCanvas* canvas, | |
| 71 SkDrawPictureCallback* callback) const { | |
| 72 canvas->restore(); | |
| 73 canvas->restore(); | |
| 74 } | |
| 75 | |
| 76 void EndFilterDisplayItem::AsValueInto( | |
| 77 base::trace_event::TracedValue* array) const { | |
| 78 array->AppendString("EndFilterDisplayItem"); | |
| 79 } | |
| 80 | |
| 81 } // namespace cc | |
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