OLD | NEW |
| (Empty) |
1 // Copyright (c) 2011 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 "views/painter.h" | |
6 | |
7 #include "base/logging.h" | |
8 #include "third_party/skia/include/core/SkBitmap.h" | |
9 #include "third_party/skia/include/effects/SkGradientShader.h" | |
10 #include "ui/base/resource/resource_bundle.h" | |
11 #include "ui/gfx/canvas.h" | |
12 #include "ui/gfx/canvas_skia.h" | |
13 #include "ui/gfx/insets.h" | |
14 #include "ui/gfx/point.h" | |
15 | |
16 namespace views { | |
17 | |
18 namespace { | |
19 | |
20 class GradientPainter : public Painter { | |
21 public: | |
22 GradientPainter(bool horizontal, const SkColor& top, const SkColor& bottom) | |
23 : horizontal_(horizontal) { | |
24 colors_[0] = top; | |
25 colors_[1] = bottom; | |
26 } | |
27 | |
28 virtual ~GradientPainter() { | |
29 } | |
30 | |
31 void Paint(int w, int h, gfx::Canvas* canvas) { | |
32 SkPaint paint; | |
33 SkPoint p[2]; | |
34 p[0].set(SkIntToScalar(0), SkIntToScalar(0)); | |
35 if (horizontal_) | |
36 p[1].set(SkIntToScalar(w), SkIntToScalar(0)); | |
37 else | |
38 p[1].set(SkIntToScalar(0), SkIntToScalar(h)); | |
39 | |
40 SkShader* s = | |
41 SkGradientShader::CreateLinear(p, colors_, NULL, 2, | |
42 SkShader::kClamp_TileMode, NULL); | |
43 paint.setStyle(SkPaint::kFill_Style); | |
44 paint.setShader(s); | |
45 // Need to unref shader, otherwise never deleted. | |
46 s->unref(); | |
47 | |
48 canvas->GetSkCanvas()->drawRectCoords( | |
49 SkIntToScalar(0), SkIntToScalar(0), SkIntToScalar(w), SkIntToScalar(h), | |
50 paint); | |
51 } | |
52 | |
53 private: | |
54 bool horizontal_; | |
55 SkColor colors_[2]; | |
56 | |
57 DISALLOW_COPY_AND_ASSIGN(GradientPainter); | |
58 }; | |
59 | |
60 | |
61 class ImagePainter : public Painter { | |
62 public: | |
63 ImagePainter(const SkBitmap& image, | |
64 const gfx::Insets& insets, | |
65 bool paint_center) | |
66 : image_(image), | |
67 insets_(insets), | |
68 paint_center_(paint_center) { | |
69 DCHECK(image.width() > insets.width() && | |
70 image.height() > insets.height()); | |
71 } | |
72 | |
73 // Paints the images. | |
74 virtual void Paint(int w, int h, gfx::Canvas* canvas) { | |
75 if (w == image_.width() && h == image_.height()) { | |
76 // Early out if the size we're to render at equals the size of the image. | |
77 canvas->DrawBitmapInt(image_, 0, 0); | |
78 return; | |
79 } | |
80 // Upper left. | |
81 canvas->DrawBitmapInt(image_, 0, 0, insets_.left(), insets_.top(), | |
82 0, 0, insets_.left(), insets_.top(), true); | |
83 // Top edge. | |
84 canvas->DrawBitmapInt( | |
85 image_, | |
86 insets_.left(), 0, image_.width() - insets_.width(), insets_.top(), | |
87 insets_.left(), 0, w - insets_.width(), insets_.top(), true); | |
88 // Upper right. | |
89 canvas->DrawBitmapInt( | |
90 image_, | |
91 image_.width() - insets_.right(), 0, insets_.right(), insets_.top(), | |
92 w - insets_.right(), 0, insets_.right(), insets_.top(), true); | |
93 // Right edge. | |
94 canvas->DrawBitmapInt( | |
95 image_, | |
96 image_.width() - insets_.right(), insets_.top(), | |
97 insets_.right(), image_.height() - insets_.height(), | |
98 w - insets_.right(), insets_.top(), insets_.right(), | |
99 h - insets_.height(), true); | |
100 // Bottom right. | |
101 canvas->DrawBitmapInt( | |
102 image_, | |
103 image_.width() - insets_.right(), image_.height() - insets_.bottom(), | |
104 insets_.right(), insets_.bottom(), | |
105 w - insets_.right(), h - insets_.bottom(), insets_.right(), | |
106 insets_.bottom(), true); | |
107 // Bottom edge. | |
108 canvas->DrawBitmapInt( | |
109 image_, | |
110 insets_.left(), image_.height() - insets_.bottom(), | |
111 image_.width() - insets_.width(), insets_.bottom(), | |
112 insets_.left(), h - insets_.bottom(), w - insets_.width(), | |
113 insets_.bottom(), true); | |
114 // Bottom left. | |
115 canvas->DrawBitmapInt( | |
116 image_, | |
117 0, image_.height() - insets_.bottom(), insets_.left(), | |
118 insets_.bottom(), | |
119 0, h - insets_.bottom(), insets_.left(), insets_.bottom(), true); | |
120 // Left. | |
121 canvas->DrawBitmapInt( | |
122 image_, | |
123 0, insets_.top(), insets_.left(), image_.height() - insets_.height(), | |
124 0, insets_.top(), insets_.left(), h - insets_.height(), true); | |
125 // Center. | |
126 if (paint_center_) { | |
127 canvas->DrawBitmapInt( | |
128 image_, | |
129 insets_.left(), insets_.top(), | |
130 image_.width() - insets_.width(), image_.height() - insets_.height(), | |
131 insets_.left(), insets_.top(), | |
132 w - insets_.width(), h - insets_.height(), true); | |
133 } | |
134 } | |
135 | |
136 private: | |
137 const SkBitmap image_; | |
138 const gfx::Insets insets_; | |
139 bool paint_center_; | |
140 | |
141 DISALLOW_COPY_AND_ASSIGN(ImagePainter); | |
142 }; | |
143 | |
144 } // namespace | |
145 | |
146 // static | |
147 void Painter::PaintPainterAt(int x, int y, int w, int h, | |
148 gfx::Canvas* canvas, Painter* painter) { | |
149 DCHECK(canvas && painter); | |
150 if (w < 0 || h < 0) | |
151 return; | |
152 canvas->Save(); | |
153 canvas->Translate(gfx::Point(x, y)); | |
154 painter->Paint(w, h, canvas); | |
155 canvas->Restore(); | |
156 } | |
157 | |
158 // static | |
159 Painter* Painter::CreateHorizontalGradient(SkColor c1, SkColor c2) { | |
160 return new GradientPainter(true, c1, c2); | |
161 } | |
162 | |
163 // static | |
164 Painter* Painter::CreateVerticalGradient(SkColor c1, SkColor c2) { | |
165 return new GradientPainter(false, c1, c2); | |
166 } | |
167 | |
168 // static | |
169 Painter* Painter::CreateImagePainter(const SkBitmap& image, | |
170 const gfx::Insets& insets, | |
171 bool paint_center) { | |
172 return new ImagePainter(image, insets, paint_center); | |
173 } | |
174 | |
175 HorizontalPainter::HorizontalPainter(const int image_resource_names[]) { | |
176 ResourceBundle& rb = ResourceBundle::GetSharedInstance(); | |
177 for (int i = 0; i < 3; ++i) | |
178 images_[i] = rb.GetBitmapNamed(image_resource_names[i]); | |
179 height_ = images_[LEFT]->height(); | |
180 DCHECK(images_[LEFT]->height() == images_[RIGHT]->height() && | |
181 images_[LEFT]->height() == images_[CENTER]->height()); | |
182 } | |
183 | |
184 void HorizontalPainter::Paint(int w, int h, gfx::Canvas* canvas) { | |
185 if (w < (images_[LEFT]->width() + images_[CENTER]->width() + | |
186 images_[RIGHT]->width())) { | |
187 // No room to paint. | |
188 return; | |
189 } | |
190 canvas->DrawBitmapInt(*images_[LEFT], 0, 0); | |
191 canvas->DrawBitmapInt(*images_[RIGHT], w - images_[RIGHT]->width(), 0); | |
192 canvas->TileImageInt(*images_[CENTER], | |
193 images_[LEFT]->width(), | |
194 0, | |
195 w - images_[LEFT]->width() - images_[RIGHT]->width(), | |
196 height_); | |
197 } | |
198 | |
199 } // namespace views | |
OLD | NEW |