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| 1 // Copyright (c) 2012 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 "ui/views/painter.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/memory/scoped_ptr.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/image/image.h" | |
| 13 #include "ui/gfx/image/image_skia.h" | |
| 14 #include "ui/gfx/image/image_skia_operations.h" | |
| 15 #include "ui/gfx/insets.h" | |
| 16 #include "ui/gfx/nine_image_painter.h" | |
| 17 #include "ui/gfx/point.h" | |
| 18 #include "ui/gfx/rect.h" | |
| 19 #include "ui/views/view.h" | |
| 20 | |
| 21 namespace views { | |
| 22 | |
| 23 namespace { | |
| 24 | |
| 25 // DashedFocusPainter ---------------------------------------------------------- | |
| 26 | |
| 27 class DashedFocusPainter : public Painter { | |
| 28 public: | |
| 29 explicit DashedFocusPainter(const gfx::Insets& insets); | |
| 30 virtual ~DashedFocusPainter(); | |
| 31 | |
| 32 // Painter: | |
| 33 virtual gfx::Size GetMinimumSize() const override; | |
| 34 virtual void Paint(gfx::Canvas* canvas, const gfx::Size& size) override; | |
| 35 | |
| 36 private: | |
| 37 const gfx::Insets insets_; | |
| 38 | |
| 39 DISALLOW_COPY_AND_ASSIGN(DashedFocusPainter); | |
| 40 }; | |
| 41 | |
| 42 DashedFocusPainter::DashedFocusPainter(const gfx::Insets& insets) | |
| 43 : insets_(insets) { | |
| 44 } | |
| 45 | |
| 46 DashedFocusPainter::~DashedFocusPainter() { | |
| 47 } | |
| 48 | |
| 49 gfx::Size DashedFocusPainter::GetMinimumSize() const { | |
| 50 return gfx::Size(); | |
| 51 } | |
| 52 | |
| 53 void DashedFocusPainter::Paint(gfx::Canvas* canvas, const gfx::Size& size) { | |
| 54 gfx::Rect rect(size); | |
| 55 rect.Inset(insets_); | |
| 56 canvas->DrawFocusRect(rect); | |
| 57 } | |
| 58 | |
| 59 // SolidFocusPainter ----------------------------------------------------------- | |
| 60 | |
| 61 class SolidFocusPainter : public Painter { | |
| 62 public: | |
| 63 SolidFocusPainter(SkColor color, const gfx::Insets& insets); | |
| 64 virtual ~SolidFocusPainter(); | |
| 65 | |
| 66 // Painter: | |
| 67 virtual gfx::Size GetMinimumSize() const override; | |
| 68 virtual void Paint(gfx::Canvas* canvas, const gfx::Size& size) override; | |
| 69 | |
| 70 private: | |
| 71 const SkColor color_; | |
| 72 const gfx::Insets insets_; | |
| 73 | |
| 74 DISALLOW_COPY_AND_ASSIGN(SolidFocusPainter); | |
| 75 }; | |
| 76 | |
| 77 SolidFocusPainter::SolidFocusPainter(SkColor color, | |
| 78 const gfx::Insets& insets) | |
| 79 : color_(color), | |
| 80 insets_(insets) { | |
| 81 } | |
| 82 | |
| 83 SolidFocusPainter::~SolidFocusPainter() { | |
| 84 } | |
| 85 | |
| 86 gfx::Size SolidFocusPainter::GetMinimumSize() const { | |
| 87 return gfx::Size(); | |
| 88 } | |
| 89 | |
| 90 void SolidFocusPainter::Paint(gfx::Canvas* canvas, const gfx::Size& size) { | |
| 91 gfx::Rect rect(size); | |
| 92 rect.Inset(insets_); | |
| 93 canvas->DrawSolidFocusRect(rect, color_); | |
| 94 } | |
| 95 | |
| 96 // GradientPainter ------------------------------------------------------------ | |
| 97 | |
| 98 class GradientPainter : public Painter { | |
| 99 public: | |
| 100 GradientPainter(bool horizontal, | |
| 101 SkColor* colors, | |
| 102 SkScalar* pos, | |
| 103 size_t count); | |
| 104 virtual ~GradientPainter(); | |
| 105 | |
| 106 // Painter: | |
| 107 virtual gfx::Size GetMinimumSize() const override; | |
| 108 virtual void Paint(gfx::Canvas* canvas, const gfx::Size& size) override; | |
| 109 | |
| 110 private: | |
| 111 // If |horizontal_| is true then the gradient is painted horizontally. | |
| 112 bool horizontal_; | |
| 113 // The gradient colors. | |
| 114 scoped_ptr<SkColor[]> colors_; | |
| 115 // The relative positions of the corresponding gradient colors. | |
| 116 scoped_ptr<SkScalar[]> pos_; | |
| 117 // The number of elements in |colors_| and |pos_|. | |
| 118 size_t count_; | |
| 119 | |
| 120 DISALLOW_COPY_AND_ASSIGN(GradientPainter); | |
| 121 }; | |
| 122 | |
| 123 GradientPainter::GradientPainter(bool horizontal, | |
| 124 SkColor* colors, | |
| 125 SkScalar* pos, | |
| 126 size_t count) | |
| 127 : horizontal_(horizontal), | |
| 128 colors_(new SkColor[count]), | |
| 129 pos_(new SkScalar[count]), | |
| 130 count_(count) { | |
| 131 for (size_t i = 0; i < count_; ++i) { | |
| 132 pos_[i] = pos[i]; | |
| 133 colors_[i] = colors[i]; | |
| 134 } | |
| 135 } | |
| 136 | |
| 137 GradientPainter::~GradientPainter() { | |
| 138 } | |
| 139 | |
| 140 gfx::Size GradientPainter::GetMinimumSize() const { | |
| 141 return gfx::Size(); | |
| 142 } | |
| 143 | |
| 144 void GradientPainter::Paint(gfx::Canvas* canvas, const gfx::Size& size) { | |
| 145 SkPaint paint; | |
| 146 SkPoint p[2]; | |
| 147 p[0].iset(0, 0); | |
| 148 if (horizontal_) | |
| 149 p[1].iset(size.width(), 0); | |
| 150 else | |
| 151 p[1].iset(0, size.height()); | |
| 152 | |
| 153 skia::RefPtr<SkShader> s = skia::AdoptRef(SkGradientShader::CreateLinear( | |
| 154 p, colors_.get(), pos_.get(), count_, SkShader::kClamp_TileMode)); | |
| 155 paint.setStyle(SkPaint::kFill_Style); | |
| 156 paint.setShader(s.get()); | |
| 157 | |
| 158 canvas->sk_canvas()->drawRectCoords(SkIntToScalar(0), SkIntToScalar(0), | |
| 159 SkIntToScalar(size.width()), | |
| 160 SkIntToScalar(size.height()), paint); | |
| 161 } | |
| 162 | |
| 163 // ImagePainter --------------------------------------------------------------- | |
| 164 | |
| 165 // ImagePainter stores and paints nine images as a scalable grid. | |
| 166 class ImagePainter : public Painter { | |
| 167 public: | |
| 168 // Constructs an ImagePainter with the specified image resource ids. | |
| 169 // See CreateImageGridPainter()'s comment regarding image ID count and order. | |
| 170 explicit ImagePainter(const int image_ids[]); | |
| 171 | |
| 172 // Constructs an ImagePainter with the specified image and insets. | |
| 173 ImagePainter(const gfx::ImageSkia& image, const gfx::Insets& insets); | |
| 174 | |
| 175 virtual ~ImagePainter(); | |
| 176 | |
| 177 // Painter: | |
| 178 virtual gfx::Size GetMinimumSize() const override; | |
| 179 virtual void Paint(gfx::Canvas* canvas, const gfx::Size& size) override; | |
| 180 | |
| 181 private: | |
| 182 scoped_ptr<gfx::NineImagePainter> nine_painter_; | |
| 183 | |
| 184 DISALLOW_COPY_AND_ASSIGN(ImagePainter); | |
| 185 }; | |
| 186 | |
| 187 ImagePainter::ImagePainter(const int image_ids[]) | |
| 188 : nine_painter_(ui::CreateNineImagePainter(image_ids)) { | |
| 189 } | |
| 190 | |
| 191 ImagePainter::ImagePainter(const gfx::ImageSkia& image, | |
| 192 const gfx::Insets& insets) | |
| 193 : nine_painter_(new gfx::NineImagePainter(image, insets)) { | |
| 194 } | |
| 195 | |
| 196 ImagePainter::~ImagePainter() { | |
| 197 } | |
| 198 | |
| 199 gfx::Size ImagePainter::GetMinimumSize() const { | |
| 200 return nine_painter_->GetMinimumSize(); | |
| 201 } | |
| 202 | |
| 203 void ImagePainter::Paint(gfx::Canvas* canvas, const gfx::Size& size) { | |
| 204 nine_painter_->Paint(canvas, gfx::Rect(size)); | |
| 205 } | |
| 206 | |
| 207 } // namespace | |
| 208 | |
| 209 | |
| 210 // Painter -------------------------------------------------------------------- | |
| 211 | |
| 212 Painter::Painter() { | |
| 213 } | |
| 214 | |
| 215 Painter::~Painter() { | |
| 216 } | |
| 217 | |
| 218 // static | |
| 219 void Painter::PaintPainterAt(gfx::Canvas* canvas, | |
| 220 Painter* painter, | |
| 221 const gfx::Rect& rect) { | |
| 222 DCHECK(canvas && painter); | |
| 223 canvas->Save(); | |
| 224 canvas->Translate(rect.OffsetFromOrigin()); | |
| 225 painter->Paint(canvas, rect.size()); | |
| 226 canvas->Restore(); | |
| 227 } | |
| 228 | |
| 229 // static | |
| 230 void Painter::PaintFocusPainter(View* view, | |
| 231 gfx::Canvas* canvas, | |
| 232 Painter* focus_painter) { | |
| 233 if (focus_painter && view->HasFocus()) | |
| 234 PaintPainterAt(canvas, focus_painter, view->GetLocalBounds()); | |
| 235 } | |
| 236 | |
| 237 // static | |
| 238 Painter* Painter::CreateHorizontalGradient(SkColor c1, SkColor c2) { | |
| 239 SkColor colors[2]; | |
| 240 colors[0] = c1; | |
| 241 colors[1] = c2; | |
| 242 SkScalar pos[] = {0, 1}; | |
| 243 return new GradientPainter(true, colors, pos, 2); | |
| 244 } | |
| 245 | |
| 246 // static | |
| 247 Painter* Painter::CreateVerticalGradient(SkColor c1, SkColor c2) { | |
| 248 SkColor colors[2]; | |
| 249 colors[0] = c1; | |
| 250 colors[1] = c2; | |
| 251 SkScalar pos[] = {0, 1}; | |
| 252 return new GradientPainter(false, colors, pos, 2); | |
| 253 } | |
| 254 | |
| 255 // static | |
| 256 Painter* Painter::CreateVerticalMultiColorGradient(SkColor* colors, | |
| 257 SkScalar* pos, | |
| 258 size_t count) { | |
| 259 return new GradientPainter(false, colors, pos, count); | |
| 260 } | |
| 261 | |
| 262 // static | |
| 263 Painter* Painter::CreateImagePainter(const gfx::ImageSkia& image, | |
| 264 const gfx::Insets& insets) { | |
| 265 return new ImagePainter(image, insets); | |
| 266 } | |
| 267 | |
| 268 // static | |
| 269 Painter* Painter::CreateImageGridPainter(const int image_ids[]) { | |
| 270 return new ImagePainter(image_ids); | |
| 271 } | |
| 272 | |
| 273 // static | |
| 274 scoped_ptr<Painter> Painter::CreateDashedFocusPainter() { | |
| 275 return scoped_ptr<Painter>(new DashedFocusPainter(gfx::Insets())).Pass(); | |
| 276 } | |
| 277 | |
| 278 // static | |
| 279 scoped_ptr<Painter> Painter::CreateDashedFocusPainterWithInsets( | |
| 280 const gfx::Insets& insets) { | |
| 281 return scoped_ptr<Painter>(new DashedFocusPainter(insets)).Pass(); | |
| 282 } | |
| 283 | |
| 284 // static | |
| 285 scoped_ptr<Painter> Painter::CreateSolidFocusPainter( | |
| 286 SkColor color, | |
| 287 const gfx::Insets& insets) { | |
| 288 return scoped_ptr<Painter>(new SolidFocusPainter(color, insets)).Pass(); | |
| 289 } | |
| 290 | |
| 291 // HorizontalPainter ---------------------------------------------------------- | |
| 292 | |
| 293 HorizontalPainter::HorizontalPainter(const int image_resource_names[]) { | |
| 294 ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance(); | |
| 295 for (int i = 0; i < 3; ++i) | |
| 296 images_[i] = rb.GetImageNamed(image_resource_names[i]).ToImageSkia(); | |
| 297 DCHECK_EQ(images_[LEFT]->height(), images_[CENTER]->height()); | |
| 298 DCHECK_EQ(images_[LEFT]->height(), images_[RIGHT]->height()); | |
| 299 } | |
| 300 | |
| 301 HorizontalPainter::~HorizontalPainter() { | |
| 302 } | |
| 303 | |
| 304 gfx::Size HorizontalPainter::GetMinimumSize() const { | |
| 305 return gfx::Size( | |
| 306 images_[LEFT]->width() + images_[CENTER]->width() + | |
| 307 images_[RIGHT]->width(), images_[LEFT]->height()); | |
| 308 } | |
| 309 | |
| 310 void HorizontalPainter::Paint(gfx::Canvas* canvas, const gfx::Size& size) { | |
| 311 if (size.width() < GetMinimumSize().width()) | |
| 312 return; // No room to paint. | |
| 313 | |
| 314 canvas->DrawImageInt(*images_[LEFT], 0, 0); | |
| 315 canvas->DrawImageInt(*images_[RIGHT], size.width() - images_[RIGHT]->width(), | |
| 316 0); | |
| 317 canvas->TileImageInt( | |
| 318 *images_[CENTER], images_[LEFT]->width(), 0, | |
| 319 size.width() - images_[LEFT]->width() - images_[RIGHT]->width(), | |
| 320 images_[LEFT]->height()); | |
| 321 } | |
| 322 | |
| 323 } // namespace views | |
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