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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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