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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "config.h" | 5 #include "config.h" |
6 | 6 |
7 #include "cc/font_atlas.h" | 7 #include "cc/font_atlas.h" |
8 | 8 |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "base/string_split.h" | 11 #include "base/string_split.h" |
12 #include "cc/proxy.h" | 12 #include "cc/proxy.h" |
13 #include "third_party/skia/include/core/SkCanvas.h" | 13 #include "third_party/skia/include/core/SkCanvas.h" |
14 #include "ui/gfx/point.h" | |
15 | 14 |
16 namespace cc { | 15 namespace cc { |
17 | 16 |
18 using namespace std; | 17 using namespace std; |
19 | 18 |
20 FontAtlas::FontAtlas(SkBitmap bitmap, IntRect asciiToRectTable[128], int fontHei
ght) | 19 FontAtlas::FontAtlas(SkBitmap bitmap, gfx::Rect asciiToRectTable[128], int fontH
eight) |
21 : m_atlas(bitmap) | 20 : m_atlas(bitmap) |
22 , m_fontHeight(fontHeight) | 21 , m_fontHeight(fontHeight) |
23 { | 22 { |
24 for (size_t i = 0; i < 128; ++i) | 23 for (size_t i = 0; i < 128; ++i) |
25 m_asciiToRectTable[i] = asciiToRectTable[i]; | 24 m_asciiToRectTable[i] = asciiToRectTable[i]; |
26 } | 25 } |
27 | 26 |
28 FontAtlas::~FontAtlas() | 27 FontAtlas::~FontAtlas() |
29 { | 28 { |
30 } | 29 } |
31 | 30 |
32 void FontAtlas::drawText(SkCanvas* canvas, const SkPaint& paint, const std::stri
ng& text, const gfx::Point& destPosition, const IntSize& clip) const | 31 void FontAtlas::drawText(SkCanvas* canvas, const SkPaint& paint, const std::stri
ng& text, const gfx::Point& destPosition, const gfx::Size& clip) const |
33 { | 32 { |
34 DCHECK(Proxy::isImplThread()); | 33 DCHECK(Proxy::isImplThread()); |
35 | 34 |
36 std::vector<std::string> lines; | 35 std::vector<std::string> lines; |
37 base::SplitString(text, '\n', &lines); | 36 base::SplitString(text, '\n', &lines); |
38 | 37 |
39 gfx::Point position = destPosition; | 38 gfx::Point position = destPosition; |
40 for (size_t i = 0; i < lines.size(); ++i) { | 39 for (size_t i = 0; i < lines.size(); ++i) { |
41 drawOneLineOfTextInternal(canvas, paint, lines[i], position); | 40 drawOneLineOfTextInternal(canvas, paint, lines[i], position); |
42 position.set_y(position.y() + m_fontHeight); | 41 position.set_y(position.y() + m_fontHeight); |
43 if (position.y() > clip.height()) | 42 if (position.y() > clip.height()) |
44 return; | 43 return; |
45 } | 44 } |
46 } | 45 } |
47 | 46 |
48 void FontAtlas::drawOneLineOfTextInternal(SkCanvas* canvas, const SkPaint& paint
, const std::string& textLine, const gfx::Point& destPosition) const | 47 void FontAtlas::drawOneLineOfTextInternal(SkCanvas* canvas, const SkPaint& paint
, const std::string& textLine, const gfx::Point& destPosition) const |
49 { | 48 { |
50 DCHECK(Proxy::isImplThread()); | 49 DCHECK(Proxy::isImplThread()); |
51 | 50 |
52 gfx::Point position = destPosition; | 51 gfx::Point position = destPosition; |
53 for (unsigned i = 0; i < textLine.length(); ++i) { | 52 for (unsigned i = 0; i < textLine.length(); ++i) { |
54 // If the ASCII code is out of bounds, then index 0 is used, which is ju
st a plain rectangle glyph. | 53 // If the ASCII code is out of bounds, then index 0 is used, which is ju
st a plain rectangle glyph. |
55 int asciiIndex = (textLine[i] < 128) ? textLine[i] : 0; | 54 int asciiIndex = (textLine[i] < 128) ? textLine[i] : 0; |
56 IntRect glyphBounds = m_asciiToRectTable[asciiIndex]; | 55 gfx::Rect glyphBounds = m_asciiToRectTable[asciiIndex]; |
57 SkIRect source = SkIRect::MakeXYWH(glyphBounds.x(), glyphBounds.y(), gly
phBounds.width(), glyphBounds.height()); | 56 SkIRect source = SkIRect::MakeXYWH(glyphBounds.x(), glyphBounds.y(), gly
phBounds.width(), glyphBounds.height()); |
58 canvas->drawBitmapRect(m_atlas, &source, SkRect::MakeXYWH(position.x(),
position.y(), glyphBounds.width(), glyphBounds.height()), &paint); | 57 canvas->drawBitmapRect(m_atlas, &source, SkRect::MakeXYWH(position.x(),
position.y(), glyphBounds.width(), glyphBounds.height()), &paint); |
59 position.set_x(position.x() + glyphBounds.width()); | 58 position.set_x(position.x() + glyphBounds.width()); |
60 } | 59 } |
61 } | 60 } |
62 | 61 |
63 void FontAtlas::drawDebugAtlas(SkCanvas* canvas, const gfx::Point& destPosition)
const | 62 void FontAtlas::drawDebugAtlas(SkCanvas* canvas, const gfx::Point& destPosition)
const |
64 { | 63 { |
65 DCHECK(Proxy::isImplThread()); | 64 DCHECK(Proxy::isImplThread()); |
66 | 65 |
67 SkIRect source = SkIRect::MakeWH(m_atlas.width(), m_atlas.height()); | 66 SkIRect source = SkIRect::MakeWH(m_atlas.width(), m_atlas.height()); |
68 canvas->drawBitmapRect(m_atlas, &source, SkRect::MakeXYWH(destPosition.x(),
destPosition.y(), m_atlas.width(), m_atlas.height())); | 67 canvas->drawBitmapRect(m_atlas, &source, SkRect::MakeXYWH(destPosition.x(),
destPosition.y(), m_atlas.width(), m_atlas.height())); |
69 } | 68 } |
70 | 69 |
71 } // namespace cc | 70 } // namespace cc |
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