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| 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 "ui/gfx/native_theme_android.h" |
| 6 |
| 7 #include <limits> |
| 8 |
| 9 #include "base/logging.h" |
| 10 #include "grit/gfx_resources.h" |
| 11 #include "third_party/skia/include/effects/SkGradientShader.h" |
| 12 #include "ui/base/resource/resource_bundle.h" |
| 13 #include "ui/gfx/color_utils.h" |
| 14 #include "ui/gfx/rect.h" |
| 15 #include "ui/gfx/size.h" |
| 16 |
| 17 namespace gfx { |
| 18 |
| 19 unsigned int NativeThemeAndroid::button_length_ = 14; |
| 20 unsigned int NativeThemeAndroid::scrollbar_width_ = 15; |
| 21 unsigned int NativeThemeAndroid::thumb_inactive_color_ = 0xeaeaea; |
| 22 unsigned int NativeThemeAndroid::thumb_active_color_ = 0xf4f4f4; |
| 23 unsigned int NativeThemeAndroid::track_color_ = 0xd3d3d3; |
| 24 |
| 25 // These are the default dimensions of radio buttons and checkboxes. |
| 26 static const int kCheckboxAndRadioWidth = 13; |
| 27 static const int kCheckboxAndRadioHeight = 13; |
| 28 |
| 29 // These sizes match the sizes in Chromium Win. |
| 30 static const int kSliderThumbWidth = 11; |
| 31 static const int kSliderThumbHeight = 21; |
| 32 |
| 33 static const SkColor kSliderTrackBackgroundColor = |
| 34 SkColorSetRGB(0xe3, 0xdd, 0xd8); |
| 35 static const SkColor kSliderThumbLightGrey = SkColorSetRGB(0xf4, 0xf2, 0xef); |
| 36 static const SkColor kSliderThumbDarkGrey = SkColorSetRGB(0xea, 0xe5, 0xe0); |
| 37 static const SkColor kSliderThumbBorderDarkGrey = |
| 38 SkColorSetRGB(0x9d, 0x96, 0x8e); |
| 39 |
| 40 // Get lightness adjusted color. |
| 41 static SkColor BrightenColor(const color_utils::HSL& hsl, |
| 42 SkAlpha alpha, |
| 43 double lightness_amount) { |
| 44 color_utils::HSL adjusted = hsl; |
| 45 adjusted.l += lightness_amount; |
| 46 if (adjusted.l > 1.0) |
| 47 adjusted.l = 1.0; |
| 48 if (adjusted.l < 0.0) |
| 49 adjusted.l = 0.0; |
| 50 |
| 51 return color_utils::HSLToSkColor(adjusted, alpha); |
| 52 } |
| 53 |
| 54 // static |
| 55 NativeThemeAndroid* NativeThemeAndroid::instance() { |
| 56 // The global NativeThemeAndroid instance. |
| 57 static NativeThemeAndroid s_native_theme; |
| 58 return &s_native_theme; |
| 59 } |
| 60 |
| 61 gfx::Size NativeThemeAndroid::GetPartSize(Part part) const { |
| 62 switch (part) { |
| 63 case SCROLLBAR_DOWN_ARROW: |
| 64 case SCROLLBAR_UP_ARROW: |
| 65 return gfx::Size(scrollbar_width_, button_length_); |
| 66 case SCROLLBAR_LEFT_ARROW: |
| 67 case SCROLLBAR_RIGHT_ARROW: |
| 68 return gfx::Size(button_length_, scrollbar_width_); |
| 69 case CHECKBOX: |
| 70 case RADIO: |
| 71 return gfx::Size(kCheckboxAndRadioWidth, kCheckboxAndRadioHeight); |
| 72 case SLIDER_TNUMB: |
| 73 // These sizes match the sizes in Chromium Win. |
| 74 return gfx::Size(kSliderThumbWidth, kSliderThumbHeight); |
| 75 case INNER_SPIN_BUTTON: |
| 76 return gfx::Size(scrollbar_width_, 0); |
| 77 case PUSH_BUTTON: |
| 78 case TEXTFIELD: |
| 79 case MENU_LIST: |
| 80 case SLIDER_TRACK: |
| 81 case PROGRESS_BAR: |
| 82 return gfx::Size(); // No default size. |
| 83 } |
| 84 return gfx::Size(); |
| 85 } |
| 86 |
| 87 void NativeThemeAndroid::Paint(SkCanvas* canvas, |
| 88 Part part, |
| 89 State state, |
| 90 const gfx::Rect& rect, |
| 91 const ExtraParams& extra) { |
| 92 switch (part) { |
| 93 case SCROLLBAR_DOWN_ARROW: |
| 94 case SCROLLBAR_UP_ARROW: |
| 95 case SCROLLBAR_LEFT_ARROW: |
| 96 case SCROLLBAR_RIGHT_ARROW: |
| 97 PaintArrowButton(canvas, rect, part, state); |
| 98 break; |
| 99 case CHECKBOX: |
| 100 PaintCheckbox(canvas, state, rect, extra.button); |
| 101 break; |
| 102 case RADIO: |
| 103 PaintRadio(canvas, state, rect, extra.button); |
| 104 break; |
| 105 case PUSH_BUTTON: |
| 106 PaintButton(canvas, state, rect, extra.button); |
| 107 break; |
| 108 case TEXTFIELD: |
| 109 PaintTextField(canvas, state, rect, extra.text_field); |
| 110 break; |
| 111 case MENU_LIST: |
| 112 PaintMenuList(canvas, state, rect, extra.menu_list); |
| 113 break; |
| 114 case SLIDER_TRACK: |
| 115 PaintSliderTrack(canvas, state, rect, extra.slider); |
| 116 break; |
| 117 case SLIDER_TNUMB: |
| 118 PaintSliderThumb(canvas, state, rect, extra.slider); |
| 119 break; |
| 120 case INNER_SPIN_BUTTON: |
| 121 PaintInnerSpinButton(canvas, state, rect, extra.inner_spin); |
| 122 break; |
| 123 case PROGRESS_BAR: |
| 124 PaintProgressBar(canvas, state, rect, extra.progress_bar); |
| 125 break; |
| 126 default: |
| 127 NOTREACHED(); |
| 128 } |
| 129 } |
| 130 |
| 131 NativeThemeAndroid::NativeThemeAndroid() { |
| 132 } |
| 133 |
| 134 NativeThemeAndroid::~NativeThemeAndroid() { |
| 135 } |
| 136 |
| 137 void NativeThemeAndroid::PaintArrowButton(SkCanvas* canvas, |
| 138 const gfx::Rect& rect, |
| 139 Part direction, |
| 140 State state) { |
| 141 int widthMiddle; |
| 142 int lengthMiddle; |
| 143 SkPaint paint; |
| 144 if (direction == SCROLLBAR_UP_ARROW || direction == SCROLLBAR_DOWN_ARROW) { |
| 145 widthMiddle = rect.width() / 2 + 1; |
| 146 lengthMiddle = rect.height() / 2 + 1; |
| 147 } else { |
| 148 lengthMiddle = rect.width() / 2 + 1; |
| 149 widthMiddle = rect.height() / 2 + 1; |
| 150 } |
| 151 |
| 152 // Calculate button color. |
| 153 SkScalar trackHSV[3]; |
| 154 SkColorToHSV(track_color_, trackHSV); |
| 155 SkColor buttonColor = SaturateAndBrighten(trackHSV, 0, 0.2); |
| 156 SkColor backgroundColor = buttonColor; |
| 157 if (state == kPressed) { |
| 158 SkScalar buttonHSV[3]; |
| 159 SkColorToHSV(buttonColor, buttonHSV); |
| 160 buttonColor = SaturateAndBrighten(buttonHSV, 0, -0.1); |
| 161 } else if (state == kHovered) { |
| 162 SkScalar buttonHSV[3]; |
| 163 SkColorToHSV(buttonColor, buttonHSV); |
| 164 buttonColor = SaturateAndBrighten(buttonHSV, 0, 0.05); |
| 165 } |
| 166 |
| 167 SkIRect skrect; |
| 168 skrect.set(rect.x(), rect.y(), rect.x() + rect.width(), rect.y() |
| 169 + rect.height()); |
| 170 // Paint the background (the area visible behind the rounded corners). |
| 171 paint.setColor(backgroundColor); |
| 172 canvas->drawIRect(skrect, paint); |
| 173 |
| 174 // Paint the button's outline and fill the middle |
| 175 SkPath outline; |
| 176 switch (direction) { |
| 177 case SCROLLBAR_UP_ARROW: |
| 178 outline.moveTo(rect.x() + 0.5, rect.y() + rect.height() + 0.5); |
| 179 outline.rLineTo(0, -(rect.height() - 2)); |
| 180 outline.rLineTo(2, -2); |
| 181 outline.rLineTo(rect.width() - 5, 0); |
| 182 outline.rLineTo(2, 2); |
| 183 outline.rLineTo(0, rect.height() - 2); |
| 184 break; |
| 185 case SCROLLBAR_DOWN_ARROW: |
| 186 outline.moveTo(rect.x() + 0.5, rect.y() - 0.5); |
| 187 outline.rLineTo(0, rect.height() - 2); |
| 188 outline.rLineTo(2, 2); |
| 189 outline.rLineTo(rect.width() - 5, 0); |
| 190 outline.rLineTo(2, -2); |
| 191 outline.rLineTo(0, -(rect.height() - 2)); |
| 192 break; |
| 193 case SCROLLBAR_RIGHT_ARROW: |
| 194 outline.moveTo(rect.x() - 0.5, rect.y() + 0.5); |
| 195 outline.rLineTo(rect.width() - 2, 0); |
| 196 outline.rLineTo(2, 2); |
| 197 outline.rLineTo(0, rect.height() - 5); |
| 198 outline.rLineTo(-2, 2); |
| 199 outline.rLineTo(-(rect.width() - 2), 0); |
| 200 break; |
| 201 case SCROLLBAR_LEFT_ARROW: |
| 202 outline.moveTo(rect.x() + rect.width() + 0.5, rect.y() + 0.5); |
| 203 outline.rLineTo(-(rect.width() - 2), 0); |
| 204 outline.rLineTo(-2, 2); |
| 205 outline.rLineTo(0, rect.height() - 5); |
| 206 outline.rLineTo(2, 2); |
| 207 outline.rLineTo(rect.width() - 2, 0); |
| 208 break; |
| 209 default: |
| 210 break; |
| 211 } |
| 212 outline.close(); |
| 213 |
| 214 paint.setStyle(SkPaint::kFill_Style); |
| 215 paint.setColor(buttonColor); |
| 216 canvas->drawPath(outline, paint); |
| 217 |
| 218 paint.setAntiAlias(true); |
| 219 paint.setStyle(SkPaint::kStroke_Style); |
| 220 SkScalar thumbHSV[3]; |
| 221 SkColorToHSV(thumb_inactive_color_, thumbHSV); |
| 222 paint.setColor(OutlineColor(trackHSV, thumbHSV)); |
| 223 canvas->drawPath(outline, paint); |
| 224 |
| 225 // If the button is disabled or read-only, the arrow is drawn with the |
| 226 // outline color. |
| 227 if (state != kDisabled) |
| 228 paint.setColor(SK_ColorBLACK); |
| 229 |
| 230 paint.setAntiAlias(false); |
| 231 paint.setStyle(SkPaint::kFill_Style); |
| 232 |
| 233 SkPath path; |
| 234 // The constants in this block of code are hand-tailored to produce good |
| 235 // looking arrows without anti-aliasing. |
| 236 switch (direction) { |
| 237 case SCROLLBAR_UP_ARROW: |
| 238 path.moveTo(rect.x() + widthMiddle - 4, rect.y() + lengthMiddle + 2); |
| 239 path.rLineTo(7, 0); |
| 240 path.rLineTo(-4, -4); |
| 241 break; |
| 242 case SCROLLBAR_DOWN_ARROW: |
| 243 path.moveTo(rect.x() + widthMiddle - 4, rect.y() + lengthMiddle - 3); |
| 244 path.rLineTo(7, 0); |
| 245 path.rLineTo(-4, 4); |
| 246 break; |
| 247 case SCROLLBAR_RIGHT_ARROW: |
| 248 path.moveTo(rect.x() + lengthMiddle - 3, rect.y() + widthMiddle - 4); |
| 249 path.rLineTo(0, 7); |
| 250 path.rLineTo(4, -4); |
| 251 break; |
| 252 case SCROLLBAR_LEFT_ARROW: |
| 253 path.moveTo(rect.x() + lengthMiddle + 1, rect.y() + widthMiddle - 5); |
| 254 path.rLineTo(0, 9); |
| 255 path.rLineTo(-4, -4); |
| 256 break; |
| 257 default: |
| 258 break; |
| 259 } |
| 260 path.close(); |
| 261 |
| 262 canvas->drawPath(path, paint); |
| 263 } |
| 264 |
| 265 void NativeThemeAndroid::PaintCheckbox(SkCanvas* canvas, |
| 266 State state, |
| 267 const gfx::Rect& rect, |
| 268 const ButtonExtraParams& button) { |
| 269 ResourceBundle& rb = ResourceBundle::GetSharedInstance(); |
| 270 SkBitmap* image = NULL; |
| 271 if (button.indeterminate) { |
| 272 image = state == kDisabled ? |
| 273 rb.GetBitmapNamed(IDR_CHECKBOX_DISABLED_INDETERMINATE) : |
| 274 rb.GetBitmapNamed(IDR_CHECKBOX_INDETERMINATE); |
| 275 } else if (button.checked) { |
| 276 image = state == kDisabled ? |
| 277 rb.GetBitmapNamed(IDR_CHECKBOX_DISABLED_ON) : |
| 278 rb.GetBitmapNamed(IDR_CHECKBOX_ON); |
| 279 } else { |
| 280 image = state == kDisabled ? |
| 281 rb.GetBitmapNamed(IDR_CHECKBOX_DISABLED_OFF) : |
| 282 rb.GetBitmapNamed(IDR_CHECKBOX_OFF); |
| 283 } |
| 284 |
| 285 gfx::Rect bounds = rect.Center(gfx::Size(image->width(), image->height())); |
| 286 DrawBitmapInt(canvas, *image, 0, 0, image->width(), image->height(), |
| 287 bounds.x(), bounds.y(), bounds.width(), bounds.height()); |
| 288 } |
| 289 |
| 290 void NativeThemeAndroid::PaintRadio(SkCanvas* canvas, |
| 291 State state, |
| 292 const gfx::Rect& rect, |
| 293 const ButtonExtraParams& button) { |
| 294 ResourceBundle& rb = ResourceBundle::GetSharedInstance(); |
| 295 SkBitmap* image = NULL; |
| 296 if (state == kDisabled) { |
| 297 image = button.checked ? |
| 298 rb.GetBitmapNamed(IDR_RADIO_DISABLED_ON) : |
| 299 rb.GetBitmapNamed(IDR_RADIO_DISABLED_OFF); |
| 300 } else { |
| 301 image = button.checked ? |
| 302 rb.GetBitmapNamed(IDR_RADIO_ON) : |
| 303 rb.GetBitmapNamed(IDR_RADIO_OFF); |
| 304 } |
| 305 |
| 306 gfx::Rect bounds = rect.Center(gfx::Size(image->width(), image->height())); |
| 307 DrawBitmapInt(canvas, *image, 0, 0, image->width(), image->height(), |
| 308 bounds.x(), bounds.y(), bounds.width(), bounds.height()); |
| 309 } |
| 310 |
| 311 void NativeThemeAndroid::PaintButton(SkCanvas* canvas, |
| 312 State state, |
| 313 const gfx::Rect& rect, |
| 314 const ButtonExtraParams& button) { |
| 315 SkPaint paint; |
| 316 SkRect skrect; |
| 317 int kRight = rect.right(); |
| 318 int kBottom = rect.bottom(); |
| 319 SkColor base_color = button.background_color; |
| 320 |
| 321 color_utils::HSL base_hsl; |
| 322 color_utils::SkColorToHSL(base_color, &base_hsl); |
| 323 |
| 324 // Our standard gradient is from 0xdd to 0xf8. This is the amount of |
| 325 // increased luminance between those values. |
| 326 SkColor light_color(BrightenColor(base_hsl, SkColorGetA(base_color), 0.105)); |
| 327 |
| 328 // If the button is too small, fallback to drawing a single, solid color |
| 329 if (rect.width() < 5 || rect.height() < 5) { |
| 330 paint.setColor(base_color); |
| 331 skrect.set(rect.x(), rect.y(), kRight, kBottom); |
| 332 canvas->drawRect(skrect, paint); |
| 333 return; |
| 334 } |
| 335 |
| 336 if (button.has_border) { |
| 337 int kBorderAlpha = state == kHovered ? 0x80 : 0x55; |
| 338 paint.setARGB(kBorderAlpha, 0, 0, 0); |
| 339 canvas->drawLine(rect.x() + 1, rect.y(), kRight - 1, rect.y(), paint); |
| 340 canvas->drawLine(kRight - 1, rect.y() + 1, kRight - 1, kBottom - 1, paint); |
| 341 canvas->drawLine(rect.x() + 1, kBottom - 1, kRight - 1, kBottom - 1, paint); |
| 342 canvas->drawLine(rect.x(), rect.y() + 1, rect.x(), kBottom - 1, paint); |
| 343 } |
| 344 |
| 345 paint.setColor(SK_ColorBLACK); |
| 346 int kLightEnd = state == kPressed ? 1 : 0; |
| 347 int kDarkEnd = !kLightEnd; |
| 348 SkPoint gradient_bounds[2]; |
| 349 gradient_bounds[kLightEnd].set(SkIntToScalar(rect.x()), |
| 350 SkIntToScalar(rect.y())); |
| 351 gradient_bounds[kDarkEnd].set(SkIntToScalar(rect.x()), |
| 352 SkIntToScalar(kBottom - 1)); |
| 353 SkColor colors[2]; |
| 354 colors[0] = light_color; |
| 355 colors[1] = base_color; |
| 356 |
| 357 SkShader* shader = SkGradientShader::CreateLinear( |
| 358 gradient_bounds, colors, NULL, 2, SkShader::kClamp_TileMode, NULL); |
| 359 paint.setStyle(SkPaint::kFill_Style); |
| 360 paint.setShader(shader); |
| 361 shader->unref(); |
| 362 |
| 363 if (button.has_border) { |
| 364 skrect.set(rect.x() + 1, rect.y() + 1, kRight - 1, kBottom - 1); |
| 365 } else { |
| 366 skrect.set(rect.x(), rect.y(), kRight, kBottom); |
| 367 } |
| 368 canvas->drawRect(skrect, paint); |
| 369 paint.setShader(NULL); |
| 370 |
| 371 if (button.has_border) { |
| 372 paint.setColor(BrightenColor(base_hsl, SkColorGetA(base_color), -0.0588)); |
| 373 canvas->drawPoint(rect.x() + 1, rect.y() + 1, paint); |
| 374 canvas->drawPoint(kRight - 2, rect.y() + 1, paint); |
| 375 canvas->drawPoint(rect.x() + 1, kBottom - 2, paint); |
| 376 canvas->drawPoint(kRight - 2, kBottom - 2, paint); |
| 377 } |
| 378 } |
| 379 |
| 380 void NativeThemeAndroid::PaintTextField(SkCanvas* canvas, |
| 381 State state, |
| 382 const gfx::Rect& rect, |
| 383 const TextFieldExtraParams& text) { |
| 384 // The following drawing code simulates the user-agent css border for |
| 385 // text area and text input so that we do not break layout tests. Once we |
| 386 // have decided the desired looks, we should update the code here and |
| 387 // the layout test expectations. |
| 388 SkRect bounds; |
| 389 bounds.set(rect.x(), rect.y(), rect.right() - 1, rect.bottom() - 1); |
| 390 |
| 391 SkPaint fill_paint; |
| 392 fill_paint.setStyle(SkPaint::kFill_Style); |
| 393 fill_paint.setColor(text.background_color); |
| 394 canvas->drawRect(bounds, fill_paint); |
| 395 |
| 396 if (text.is_text_area) { |
| 397 // Draw text area border: 1px solid black |
| 398 SkPaint stroke_paint; |
| 399 fill_paint.setStyle(SkPaint::kStroke_Style); |
| 400 fill_paint.setColor(SK_ColorBLACK); |
| 401 canvas->drawRect(bounds, fill_paint); |
| 402 } else { |
| 403 // Draw text input and listbox inset border |
| 404 // Text Input: 2px inset #eee |
| 405 // Listbox: 1px inset #808080 |
| 406 SkColor kLightColor = text.is_listbox ? |
| 407 SkColorSetRGB(0x80, 0x80, 0x80) : SkColorSetRGB(0xee, 0xee, 0xee); |
| 408 SkColor kDarkColor = text.is_listbox ? |
| 409 SkColorSetRGB(0x2c, 0x2c, 0x2c) : SkColorSetRGB(0x9a, 0x9a, 0x9a); |
| 410 int kBorderWidth = text.is_listbox ? 1 : 2; |
| 411 |
| 412 SkPaint dark_paint; |
| 413 dark_paint.setAntiAlias(true); |
| 414 dark_paint.setStyle(SkPaint::kFill_Style); |
| 415 dark_paint.setColor(kDarkColor); |
| 416 |
| 417 SkPaint light_paint; |
| 418 light_paint.setAntiAlias(true); |
| 419 light_paint.setStyle(SkPaint::kFill_Style); |
| 420 light_paint.setColor(kLightColor); |
| 421 |
| 422 int left = rect.x(); |
| 423 int top = rect.y(); |
| 424 int right = rect.right(); |
| 425 int bottom = rect.bottom(); |
| 426 |
| 427 SkPath path; |
| 428 path.incReserve(4); |
| 429 |
| 430 // Top |
| 431 path.moveTo(SkIntToScalar(left), SkIntToScalar(top)); |
| 432 path.lineTo(SkIntToScalar(left + kBorderWidth), |
| 433 SkIntToScalar(top + kBorderWidth)); |
| 434 path.lineTo(SkIntToScalar(right - kBorderWidth), |
| 435 SkIntToScalar(top + kBorderWidth)); |
| 436 path.lineTo(SkIntToScalar(right), SkIntToScalar(top)); |
| 437 canvas->drawPath(path, dark_paint); |
| 438 |
| 439 // Bottom |
| 440 path.reset(); |
| 441 path.moveTo(SkIntToScalar(left + kBorderWidth), |
| 442 SkIntToScalar(bottom - kBorderWidth)); |
| 443 path.lineTo(SkIntToScalar(left), SkIntToScalar(bottom)); |
| 444 path.lineTo(SkIntToScalar(right), SkIntToScalar(bottom)); |
| 445 path.lineTo(SkIntToScalar(right - kBorderWidth), |
| 446 SkIntToScalar(bottom - kBorderWidth)); |
| 447 canvas->drawPath(path, light_paint); |
| 448 |
| 449 // Left |
| 450 path.reset(); |
| 451 path.moveTo(SkIntToScalar(left), SkIntToScalar(top)); |
| 452 path.lineTo(SkIntToScalar(left), SkIntToScalar(bottom)); |
| 453 path.lineTo(SkIntToScalar(left + kBorderWidth), |
| 454 SkIntToScalar(bottom - kBorderWidth)); |
| 455 path.lineTo(SkIntToScalar(left + kBorderWidth), |
| 456 SkIntToScalar(top + kBorderWidth)); |
| 457 canvas->drawPath(path, dark_paint); |
| 458 |
| 459 // Right |
| 460 path.reset(); |
| 461 path.moveTo(SkIntToScalar(right - kBorderWidth), |
| 462 SkIntToScalar(top + kBorderWidth)); |
| 463 path.lineTo(SkIntToScalar(right - kBorderWidth), SkIntToScalar(bottom)); |
| 464 path.lineTo(SkIntToScalar(right), SkIntToScalar(bottom)); |
| 465 path.lineTo(SkIntToScalar(right), SkIntToScalar(top)); |
| 466 canvas->drawPath(path, light_paint); |
| 467 } |
| 468 } |
| 469 |
| 470 void NativeThemeAndroid::PaintMenuList(SkCanvas* canvas, |
| 471 State state, |
| 472 const gfx::Rect& rect, |
| 473 const MenuListExtraParams& menu_list) { |
| 474 // If a border radius is specified, we let the WebCore paint the background |
| 475 // and the border of the control. |
| 476 if (!menu_list.has_border_radius) { |
| 477 ButtonExtraParams button = { 0 }; |
| 478 button.background_color = menu_list.background_color; |
| 479 button.has_border = menu_list.has_border; |
| 480 PaintButton(canvas, state, rect, button); |
| 481 } |
| 482 |
| 483 SkPaint paint; |
| 484 paint.setColor(SK_ColorBLACK); |
| 485 paint.setAntiAlias(true); |
| 486 paint.setStyle(SkPaint::kFill_Style); |
| 487 |
| 488 SkPath path; |
| 489 path.moveTo(menu_list.arrow_x, menu_list.arrow_y - 3); |
| 490 path.rLineTo(6, 0); |
| 491 path.rLineTo(-3, 6); |
| 492 path.close(); |
| 493 canvas->drawPath(path, paint); |
| 494 } |
| 495 |
| 496 void NativeThemeAndroid::PaintSliderTrack(SkCanvas* canvas, |
| 497 State state, |
| 498 const gfx::Rect& rect, |
| 499 const SliderExtraParams& slider) { |
| 500 int kMidX = rect.x() + rect.width() / 2; |
| 501 int kMidY = rect.y() + rect.height() / 2; |
| 502 |
| 503 SkPaint paint; |
| 504 paint.setColor(kSliderTrackBackgroundColor); |
| 505 |
| 506 SkRect skrect; |
| 507 if (slider.vertical) { |
| 508 skrect.set(std::max(rect.x(), kMidX - 2), |
| 509 rect.y(), |
| 510 std::min(rect.right(), kMidX + 2), |
| 511 rect.bottom()); |
| 512 } else { |
| 513 skrect.set(rect.x(), |
| 514 std::max(rect.y(), kMidY - 2), |
| 515 rect.right(), |
| 516 std::min(rect.bottom(), kMidY + 2)); |
| 517 } |
| 518 canvas->drawRect(skrect, paint); |
| 519 } |
| 520 |
| 521 void NativeThemeAndroid::PaintSliderThumb(SkCanvas* canvas, |
| 522 State state, |
| 523 const gfx::Rect& rect, |
| 524 const SliderExtraParams& slider) { |
| 525 bool hovered = (state == kHovered) || slider.in_drag; |
| 526 int kMidX = rect.x() + rect.width() / 2; |
| 527 int kMidY = rect.y() + rect.height() / 2; |
| 528 |
| 529 SkPaint paint; |
| 530 paint.setColor(hovered ? SK_ColorWHITE : kSliderThumbLightGrey); |
| 531 |
| 532 SkIRect skrect; |
| 533 if (slider.vertical) |
| 534 skrect.set(rect.x(), rect.y(), kMidX + 1, rect.bottom()); |
| 535 else |
| 536 skrect.set(rect.x(), rect.y(), rect.right(), kMidY + 1); |
| 537 |
| 538 canvas->drawIRect(skrect, paint); |
| 539 |
| 540 paint.setColor(hovered ? kSliderThumbLightGrey : kSliderThumbDarkGrey); |
| 541 |
| 542 if (slider.vertical) |
| 543 skrect.set(kMidX + 1, rect.y(), rect.right(), rect.bottom()); |
| 544 else |
| 545 skrect.set(rect.x(), kMidY + 1, rect.right(), rect.bottom()); |
| 546 |
| 547 canvas->drawIRect(skrect, paint); |
| 548 |
| 549 paint.setColor(kSliderThumbBorderDarkGrey); |
| 550 DrawBox(canvas, rect, paint); |
| 551 |
| 552 if (rect.height() > 10 && rect.width() > 10) { |
| 553 DrawHorizLine(canvas, kMidX - 2, kMidX + 2, kMidY, paint); |
| 554 DrawHorizLine(canvas, kMidX - 2, kMidX + 2, kMidY - 3, paint); |
| 555 DrawHorizLine(canvas, kMidX - 2, kMidX + 2, kMidY + 3, paint); |
| 556 } |
| 557 } |
| 558 |
| 559 void NativeThemeAndroid::PaintInnerSpinButton( |
| 560 SkCanvas* canvas, |
| 561 State state, |
| 562 const gfx::Rect& rect, |
| 563 const InnerSpinButtonExtraParams& spin_button) { |
| 564 if (spin_button.read_only) |
| 565 state = kDisabled; |
| 566 |
| 567 State north_state = state; |
| 568 State south_state = state; |
| 569 if (spin_button.spin_up) |
| 570 south_state = south_state != kDisabled ? kNormal : kDisabled; |
| 571 else |
| 572 north_state = north_state != kDisabled ? kNormal : kDisabled; |
| 573 |
| 574 gfx::Rect half = rect; |
| 575 half.set_height(rect.height() / 2); |
| 576 PaintArrowButton(canvas, half, SCROLLBAR_UP_ARROW, north_state); |
| 577 |
| 578 half.set_y(rect.y() + rect.height() / 2); |
| 579 PaintArrowButton(canvas, half, SCROLLBAR_DOWN_ARROW, south_state); |
| 580 } |
| 581 |
| 582 void NativeThemeAndroid::PaintProgressBar( |
| 583 SkCanvas* canvas, |
| 584 State state, |
| 585 const gfx::Rect& rect, |
| 586 const ProgressBarExtraParams& progress_bar) { |
| 587 ResourceBundle& rb = ResourceBundle::GetSharedInstance(); |
| 588 SkBitmap* bar_image = rb.GetBitmapNamed(IDR_PROGRESS_BAR); |
| 589 SkBitmap* left_border_image = rb.GetBitmapNamed(IDR_PROGRESS_BORDER_LEFT); |
| 590 SkBitmap* right_border_image = rb.GetBitmapNamed(IDR_PROGRESS_BORDER_RIGHT); |
| 591 |
| 592 double tile_scale = static_cast<double>(rect.height()) / |
| 593 bar_image->height(); |
| 594 |
| 595 int new_tile_width = static_cast<int>(bar_image->width() * tile_scale); |
| 596 double tile_scale_x = static_cast<double>(new_tile_width) / |
| 597 bar_image->width(); |
| 598 |
| 599 DrawTiledImage(canvas, *bar_image, 0, 0, tile_scale_x, tile_scale, |
| 600 rect.x(), rect.y(), rect.width(), rect.height()); |
| 601 |
| 602 if (progress_bar.value_rect_width) { |
| 603 SkBitmap* value_image = rb.GetBitmapNamed(IDR_PROGRESS_VALUE); |
| 604 |
| 605 new_tile_width = static_cast<int>(value_image->width() * tile_scale); |
| 606 tile_scale_x = static_cast<double>(new_tile_width) / |
| 607 value_image->width(); |
| 608 |
| 609 DrawTiledImage(canvas, *value_image, 0, 0, tile_scale_x, tile_scale, |
| 610 progress_bar.value_rect_x, |
| 611 progress_bar.value_rect_y, |
| 612 progress_bar.value_rect_width, |
| 613 progress_bar.value_rect_height); |
| 614 } |
| 615 |
| 616 int dest_left_border_width = static_cast<int>(left_border_image->width() * |
| 617 tile_scale); |
| 618 SkRect dest_rect = { |
| 619 SkIntToScalar(rect.x()), |
| 620 SkIntToScalar(rect.y()), |
| 621 SkIntToScalar(rect.x() + dest_left_border_width), |
| 622 SkIntToScalar(rect.bottom()) |
| 623 }; |
| 624 canvas->drawBitmapRect(*left_border_image, NULL, dest_rect); |
| 625 |
| 626 int dest_right_border_width = static_cast<int>(right_border_image->width() * |
| 627 tile_scale); |
| 628 dest_rect.set(SkIntToScalar(rect.right() - dest_right_border_width), |
| 629 SkIntToScalar(rect.y()), |
| 630 SkIntToScalar(rect.right()), |
| 631 SkIntToScalar(rect.bottom())); |
| 632 canvas->drawBitmapRect(*right_border_image, NULL, dest_rect); |
| 633 } |
| 634 |
| 635 bool NativeThemeAndroid::IntersectsClipRectInt(SkCanvas* canvas, |
| 636 int x, |
| 637 int y, |
| 638 int w, |
| 639 int h) { |
| 640 SkRect clip; |
| 641 return canvas->getClipBounds(&clip) && |
| 642 clip.intersect(SkIntToScalar(x), SkIntToScalar(y), SkIntToScalar(x + w), |
| 643 SkIntToScalar(y + h)); |
| 644 } |
| 645 |
| 646 void NativeThemeAndroid::DrawBitmapInt(SkCanvas* canvas, |
| 647 const SkBitmap& bitmap, |
| 648 int src_x, |
| 649 int src_y, |
| 650 int src_w, |
| 651 int src_h, |
| 652 int dest_x, |
| 653 int dest_y, |
| 654 int dest_w, |
| 655 int dest_h) { |
| 656 DLOG_ASSERT(src_x + src_w < std::numeric_limits<int16_t>::max() && |
| 657 src_y + src_h < std::numeric_limits<int16_t>::max()); |
| 658 if (src_w <= 0 || src_h <= 0 || dest_w <= 0 || dest_h <= 0) { |
| 659 NOTREACHED() << "Attempting to draw bitmap to/from an empty rect!"; |
| 660 return; |
| 661 } |
| 662 |
| 663 if (!IntersectsClipRectInt(canvas, dest_x, dest_y, dest_w, dest_h)) |
| 664 return; |
| 665 |
| 666 SkRect dest_rect = { SkIntToScalar(dest_x), |
| 667 SkIntToScalar(dest_y), |
| 668 SkIntToScalar(dest_x + dest_w), |
| 669 SkIntToScalar(dest_y + dest_h) }; |
| 670 |
| 671 if (src_w == dest_w && src_h == dest_h) { |
| 672 // Workaround for apparent bug in Skia that causes image to occasionally |
| 673 // shift. |
| 674 SkIRect src_rect = { src_x, src_y, src_x + src_w, src_y + src_h }; |
| 675 canvas->drawBitmapRect(bitmap, &src_rect, dest_rect); |
| 676 return; |
| 677 } |
| 678 |
| 679 // Make a bitmap shader that contains the bitmap we want to draw. This is |
| 680 // basically what SkCanvas.drawBitmap does internally, but it gives us |
| 681 // more control over quality and will use the mipmap in the source image if |
| 682 // it has one, whereas drawBitmap won't. |
| 683 SkShader* shader = SkShader::CreateBitmapShader(bitmap, |
| 684 SkShader::kRepeat_TileMode, |
| 685 SkShader::kRepeat_TileMode); |
| 686 SkMatrix shader_scale; |
| 687 shader_scale.setScale(SkFloatToScalar(static_cast<float>(dest_w) / src_w), |
| 688 SkFloatToScalar(static_cast<float>(dest_h) / src_h)); |
| 689 shader_scale.preTranslate(SkIntToScalar(-src_x), SkIntToScalar(-src_y)); |
| 690 shader_scale.postTranslate(SkIntToScalar(dest_x), SkIntToScalar(dest_y)); |
| 691 shader->setLocalMatrix(shader_scale); |
| 692 |
| 693 // The rect will be filled by the bitmap. |
| 694 SkPaint p; |
| 695 p.setFilterBitmap(true); |
| 696 p.setShader(shader); |
| 697 shader->unref(); |
| 698 canvas->drawRect(dest_rect, p); |
| 699 } |
| 700 |
| 701 void NativeThemeAndroid::DrawTiledImage(SkCanvas* canvas, |
| 702 const SkBitmap& bitmap, |
| 703 int src_x, |
| 704 int src_y, |
| 705 double tile_scale_x, |
| 706 double tile_scale_y, |
| 707 int dest_x, |
| 708 int dest_y, |
| 709 int w, |
| 710 int h) const { |
| 711 SkShader* shader = SkShader::CreateBitmapShader(bitmap, |
| 712 SkShader::kRepeat_TileMode, |
| 713 SkShader::kRepeat_TileMode); |
| 714 if (tile_scale_x != 1.0 || tile_scale_y != 1.0) { |
| 715 SkMatrix shader_scale; |
| 716 shader_scale.setScale(SkDoubleToScalar(tile_scale_x), |
| 717 SkDoubleToScalar(tile_scale_y)); |
| 718 shader->setLocalMatrix(shader_scale); |
| 719 } |
| 720 |
| 721 SkPaint paint; |
| 722 paint.setShader(shader); |
| 723 paint.setXfermodeMode(SkXfermode::kSrcOver_Mode); |
| 724 |
| 725 // CreateBitmapShader returns a Shader with a reference count of one, we |
| 726 // need to unref after paint takes ownership of the shader. |
| 727 shader->unref(); |
| 728 canvas->save(); |
| 729 canvas->translate(SkIntToScalar(dest_x - src_x), |
| 730 SkIntToScalar(dest_y - src_y)); |
| 731 canvas->clipRect(SkRect::MakeXYWH(src_x, src_y, w, h)); |
| 732 canvas->drawPaint(paint); |
| 733 canvas->restore(); |
| 734 } |
| 735 |
| 736 SkColor NativeThemeAndroid::SaturateAndBrighten( |
| 737 SkScalar* hsv, |
| 738 SkScalar saturate_amount, |
| 739 SkScalar brighten_amount) const { |
| 740 SkScalar color[3]; |
| 741 color[0] = hsv[0]; |
| 742 color[1] = Clamp(hsv[1] + saturate_amount, 0.0, 1.0); |
| 743 color[2] = Clamp(hsv[2] + brighten_amount, 0.0, 1.0); |
| 744 return SkHSVToColor(color); |
| 745 } |
| 746 |
| 747 SkScalar NativeThemeAndroid::Clamp(SkScalar value, |
| 748 SkScalar min, |
| 749 SkScalar max) const { |
| 750 return std::min(std::max(value, min), max); |
| 751 } |
| 752 |
| 753 void NativeThemeAndroid::DrawVertLine(SkCanvas* canvas, |
| 754 int x, |
| 755 int y1, |
| 756 int y2, |
| 757 const SkPaint& paint) const { |
| 758 SkIRect skrect; |
| 759 skrect.set(x, y1, x + 1, y2 + 1); |
| 760 canvas->drawIRect(skrect, paint); |
| 761 } |
| 762 |
| 763 void NativeThemeAndroid::DrawHorizLine(SkCanvas* canvas, |
| 764 int x1, |
| 765 int x2, |
| 766 int y, |
| 767 const SkPaint& paint) const { |
| 768 SkIRect skrect; |
| 769 skrect.set(x1, y, x2 + 1, y + 1); |
| 770 canvas->drawIRect(skrect, paint); |
| 771 } |
| 772 |
| 773 void NativeThemeAndroid::DrawBox(SkCanvas* canvas, |
| 774 const gfx::Rect& rect, |
| 775 const SkPaint& paint) const { |
| 776 int right = rect.x() + rect.width() - 1; |
| 777 int bottom = rect.y() + rect.height() - 1; |
| 778 DrawHorizLine(canvas, rect.x(), right, rect.y(), paint); |
| 779 DrawVertLine(canvas, right, rect.y(), bottom, paint); |
| 780 DrawHorizLine(canvas, rect.x(), right, bottom, paint); |
| 781 DrawVertLine(canvas, rect.x(), rect.y(), bottom, paint); |
| 782 } |
| 783 |
| 784 SkColor NativeThemeAndroid::OutlineColor(SkScalar* hsv1, SkScalar* hsv2) const { |
| 785 // GTK Theme engines have way too much control over the layout of |
| 786 // the scrollbar. We might be able to more closely approximate its |
| 787 // look-and-feel, if we sent whole images instead of just colors |
| 788 // from the browser to the renderer. But even then, some themes |
| 789 // would just break. |
| 790 // |
| 791 // So, instead, we don't even try to 100% replicate the look of |
| 792 // the native scrollbar. We render our own version, but we make |
| 793 // sure to pick colors that blend in nicely with the system GTK |
| 794 // theme. In most cases, we can just sample a couple of pixels |
| 795 // from the system scrollbar and use those colors to draw our |
| 796 // scrollbar. |
| 797 // |
| 798 // This works fine for the track color and the overall thumb |
| 799 // color. But it fails spectacularly for the outline color used |
| 800 // around the thumb piece. Not all themes have a clearly defined |
| 801 // outline. For some of them it is partially transparent, and for |
| 802 // others the thickness is very unpredictable. |
| 803 // |
| 804 // So, instead of trying to approximate the system theme, we |
| 805 // instead try to compute a reasonable looking choice based on the |
| 806 // known color of the track and the thumb piece. This is difficult |
| 807 // when trying to deal both with high- and low-contrast themes, |
| 808 // and both with positive and inverted themes. |
| 809 // |
| 810 // The following code has been tested to look OK with all of the |
| 811 // default GTK themes. |
| 812 SkScalar min_diff = Clamp((hsv1[1] + hsv2[1]) * 1.2, 0.28, 0.5); |
| 813 SkScalar diff = Clamp(fabs(hsv1[2] - hsv2[2]) / 2, min_diff, 0.5); |
| 814 |
| 815 if (hsv1[2] + hsv2[2] > 1.0) |
| 816 diff = -diff; |
| 817 |
| 818 return SaturateAndBrighten(hsv2, -0.2, diff); |
| 819 } |
| 820 |
| 821 } // namespace gfx |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 8497054:
Upstream: ui implementation in Android (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src