1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
// Copyright 2015 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 "ui/compositor/clip_recorder.h"
#include "cc/playback/clip_display_item.h"
#include "cc/playback/clip_path_display_item.h"
#include "cc/playback/display_item_list.h"
#include "ui/compositor/paint_context.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/rect_conversions.h"
#include "ui/gfx/path.h"
#include "ui/gfx/skia_util.h"
namespace ui {
ClipRecorder::ClipRecorder(const PaintContext& context)
: context_(context), num_closers_(0) {}
ClipRecorder::~ClipRecorder() {
for (int i = num_closers_ - 1; i >= 0; --i) {
const gfx::Rect& bounds_in_layer = bounds_in_layer_[i];
switch (closers_[i]) {
case CLIP_RECT:
context_.list_->CreateAndAppendItem<cc::EndClipDisplayItem>(
bounds_in_layer);
break;
case CLIP_PATH:
context_.list_->CreateAndAppendItem<cc::EndClipPathDisplayItem>(
bounds_in_layer);
break;
}
}
}
void ClipRecorder::RecordCloser(const gfx::Rect& bounds_in_layer,
Closer closer) {
DCHECK_LT(num_closers_, kMaxOpCount);
closers_[num_closers_] = closer;
bounds_in_layer_[num_closers_++] = bounds_in_layer;
}
static gfx::Rect PathToEnclosingRect(const gfx::Path& path) {
return gfx::ToEnclosingRect(gfx::SkRectToRectF(path.getBounds()));
}
void ClipRecorder::ClipRect(const gfx::Rect& clip_rect) {
gfx::Rect clip_in_layer_space = context_.ToLayerSpaceRect(clip_rect);
context_.list_->CreateAndAppendItem<cc::ClipDisplayItem>(
clip_in_layer_space, clip_rect, std::vector<SkRRect>());
RecordCloser(clip_in_layer_space, CLIP_RECT);
}
void ClipRecorder::ClipPath(const gfx::Path& clip_path) {
bool anti_alias = false;
gfx::Rect clip_in_layer_space =
context_.ToLayerSpaceRect(PathToEnclosingRect(clip_path));
context_.list_->CreateAndAppendItem<cc::ClipPathDisplayItem>(
clip_in_layer_space, clip_path, SkRegion::kIntersect_Op, anti_alias);
RecordCloser(clip_in_layer_space, CLIP_PATH);
}
void ClipRecorder::ClipPathWithAntiAliasing(const gfx::Path& clip_path) {
bool anti_alias = true;
gfx::Rect clip_in_layer_space =
context_.ToLayerSpaceRect(PathToEnclosingRect(clip_path));
context_.list_->CreateAndAppendItem<cc::ClipPathDisplayItem>(
clip_in_layer_space, clip_path, SkRegion::kIntersect_Op, anti_alias);
RecordCloser(clip_in_layer_space, CLIP_PATH);
}
} // namespace ui
|
