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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/native_theme/native_theme_base.h" | |
| 6 | |
| 7 #include <limits> | |
| 8 | |
| 9 #include "base/command_line.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "base/memory/scoped_ptr.h" | |
| 12 #include "third_party/skia/include/effects/SkGradientShader.h" | |
| 13 #include "ui/base/layout.h" | |
| 14 #include "ui/base/resource/resource_bundle.h" | |
| 15 #include "ui/base/ui_base_switches.h" | |
| 16 #include "ui/gfx/canvas.h" | |
| 17 #include "ui/gfx/color_utils.h" | |
| 18 #include "ui/gfx/image/image_skia.h" | |
| 19 #include "ui/gfx/rect.h" | |
| 20 #include "ui/gfx/size.h" | |
| 21 #include "ui/gfx/skia_util.h" | |
| 22 #include "ui/native_theme/common_theme.h" | |
| 23 #include "ui/resources/grit/ui_resources.h" | |
| 24 | |
| 25 namespace { | |
| 26 | |
| 27 // These are the default dimensions of radio buttons and checkboxes. | |
| 28 const int kCheckboxAndRadioWidth = 13; | |
| 29 const int kCheckboxAndRadioHeight = 13; | |
| 30 | |
| 31 // These sizes match the sizes in Chromium Win. | |
| 32 const int kSliderThumbWidth = 11; | |
| 33 const int kSliderThumbHeight = 21; | |
| 34 | |
| 35 const SkColor kSliderTrackBackgroundColor = | |
| 36 SkColorSetRGB(0xe3, 0xdd, 0xd8); | |
| 37 const SkColor kSliderThumbLightGrey = SkColorSetRGB(0xf4, 0xf2, 0xef); | |
| 38 const SkColor kSliderThumbDarkGrey = SkColorSetRGB(0xea, 0xe5, 0xe0); | |
| 39 const SkColor kSliderThumbBorderDarkGrey = | |
| 40 SkColorSetRGB(0x9d, 0x96, 0x8e); | |
| 41 | |
| 42 const SkColor kTextBorderColor = SkColorSetRGB(0xa9, 0xa9, 0xa9); | |
| 43 | |
| 44 const SkColor kMenuPopupBackgroundColor = SkColorSetRGB(210, 225, 246); | |
| 45 | |
| 46 const unsigned int kDefaultScrollbarWidth = 15; | |
| 47 const unsigned int kDefaultScrollbarButtonLength = 14; | |
| 48 | |
| 49 const SkColor kCheckboxTinyColor = SK_ColorGRAY; | |
| 50 const SkColor kCheckboxShadowColor = SkColorSetARGB(0x15, 0, 0, 0); | |
| 51 const SkColor kCheckboxShadowHoveredColor = SkColorSetARGB(0x1F, 0, 0, 0); | |
| 52 const SkColor kCheckboxShadowDisabledColor = SkColorSetARGB(0, 0, 0, 0); | |
| 53 const SkColor kCheckboxGradientColors[] = { | |
| 54 SkColorSetRGB(0xed, 0xed, 0xed), | |
| 55 SkColorSetRGB(0xde, 0xde, 0xde) }; | |
| 56 const SkColor kCheckboxGradientPressedColors[] = { | |
| 57 SkColorSetRGB(0xe7, 0xe7, 0xe7), | |
| 58 SkColorSetRGB(0xd7, 0xd7, 0xd7) }; | |
| 59 const SkColor kCheckboxGradientHoveredColors[] = { | |
| 60 SkColorSetRGB(0xf0, 0xf0, 0xf0), | |
| 61 SkColorSetRGB(0xe0, 0xe0, 0xe0) }; | |
| 62 const SkColor kCheckboxGradientDisabledColors[] = { | |
| 63 SkColorSetARGB(0x80, 0xed, 0xed, 0xed), | |
| 64 SkColorSetARGB(0x80, 0xde, 0xde, 0xde) }; | |
| 65 const SkColor kCheckboxBorderColor = SkColorSetARGB(0x40, 0, 0, 0); | |
| 66 const SkColor kCheckboxBorderHoveredColor = SkColorSetARGB(0x4D, 0, 0, 0); | |
| 67 const SkColor kCheckboxBorderDisabledColor = SkColorSetARGB(0x20, 0, 0, 0); | |
| 68 const SkColor kCheckboxStrokeColor = SkColorSetARGB(0xB3, 0, 0, 0); | |
| 69 const SkColor kCheckboxStrokeDisabledColor = SkColorSetARGB(0x59, 0, 0, 0); | |
| 70 const SkColor kRadioDotColor = SkColorSetRGB(0x66, 0x66, 0x66); | |
| 71 const SkColor kRadioDotDisabledColor = SkColorSetARGB(0x80, 0x66, 0x66, 0x66); | |
| 72 | |
| 73 // Get lightness adjusted color. | |
| 74 SkColor BrightenColor(const color_utils::HSL& hsl, SkAlpha alpha, | |
| 75 double lightness_amount) { | |
| 76 color_utils::HSL adjusted = hsl; | |
| 77 adjusted.l += lightness_amount; | |
| 78 if (adjusted.l > 1.0) | |
| 79 adjusted.l = 1.0; | |
| 80 if (adjusted.l < 0.0) | |
| 81 adjusted.l = 0.0; | |
| 82 | |
| 83 return color_utils::HSLToSkColor(adjusted, alpha); | |
| 84 } | |
| 85 | |
| 86 } // namespace | |
| 87 | |
| 88 namespace ui { | |
| 89 | |
| 90 gfx::Size NativeThemeBase::GetPartSize(Part part, | |
| 91 State state, | |
| 92 const ExtraParams& extra) const { | |
| 93 gfx::Size size = CommonThemeGetPartSize(part, state, extra); | |
| 94 if (!size.IsEmpty()) | |
| 95 return size; | |
| 96 | |
| 97 switch (part) { | |
| 98 // Please keep these in the order of NativeTheme::Part. | |
| 99 case kCheckbox: | |
| 100 return gfx::Size(kCheckboxAndRadioWidth, kCheckboxAndRadioHeight); | |
| 101 case kInnerSpinButton: | |
| 102 return gfx::Size(scrollbar_width_, 0); | |
| 103 case kMenuList: | |
| 104 return gfx::Size(); // No default size. | |
| 105 case kMenuCheck: | |
| 106 case kMenuCheckBackground: | |
| 107 case kMenuPopupArrow: | |
| 108 NOTIMPLEMENTED(); | |
| 109 break; | |
| 110 case kMenuPopupBackground: | |
| 111 return gfx::Size(); // No default size. | |
| 112 case kMenuPopupGutter: | |
| 113 case kMenuPopupSeparator: | |
| 114 NOTIMPLEMENTED(); | |
| 115 break; | |
| 116 case kMenuItemBackground: | |
| 117 case kProgressBar: | |
| 118 case kPushButton: | |
| 119 return gfx::Size(); // No default size. | |
| 120 case kRadio: | |
| 121 return gfx::Size(kCheckboxAndRadioWidth, kCheckboxAndRadioHeight); | |
| 122 case kScrollbarDownArrow: | |
| 123 case kScrollbarUpArrow: | |
| 124 return gfx::Size(scrollbar_width_, scrollbar_button_length_); | |
| 125 case kScrollbarLeftArrow: | |
| 126 case kScrollbarRightArrow: | |
| 127 return gfx::Size(scrollbar_button_length_, scrollbar_width_); | |
| 128 case kScrollbarHorizontalThumb: | |
| 129 // This matches Firefox on Linux. | |
| 130 return gfx::Size(2 * scrollbar_width_, scrollbar_width_); | |
| 131 case kScrollbarVerticalThumb: | |
| 132 // This matches Firefox on Linux. | |
| 133 return gfx::Size(scrollbar_width_, 2 * scrollbar_width_); | |
| 134 case kScrollbarHorizontalTrack: | |
| 135 return gfx::Size(0, scrollbar_width_); | |
| 136 case kScrollbarVerticalTrack: | |
| 137 return gfx::Size(scrollbar_width_, 0); | |
| 138 case kScrollbarHorizontalGripper: | |
| 139 case kScrollbarVerticalGripper: | |
| 140 NOTIMPLEMENTED(); | |
| 141 break; | |
| 142 case kSliderTrack: | |
| 143 return gfx::Size(); // No default size. | |
| 144 case kSliderThumb: | |
| 145 // These sizes match the sizes in Chromium Win. | |
| 146 return gfx::Size(kSliderThumbWidth, kSliderThumbHeight); | |
| 147 case kTabPanelBackground: | |
| 148 NOTIMPLEMENTED(); | |
| 149 break; | |
| 150 case kTextField: | |
| 151 return gfx::Size(); // No default size. | |
| 152 case kTrackbarThumb: | |
| 153 case kTrackbarTrack: | |
| 154 case kWindowResizeGripper: | |
| 155 NOTIMPLEMENTED(); | |
| 156 break; | |
| 157 default: | |
| 158 NOTREACHED() << "Unknown theme part: " << part; | |
| 159 break; | |
| 160 } | |
| 161 return gfx::Size(); | |
| 162 } | |
| 163 | |
| 164 void NativeThemeBase::PaintStateTransition(SkCanvas* canvas, | |
| 165 Part part, | |
| 166 State startState, | |
| 167 State endState, | |
| 168 double progress, | |
| 169 const gfx::Rect& rect) const { | |
| 170 if (rect.IsEmpty()) | |
| 171 return; | |
| 172 | |
| 173 // Currently state transition is animation only working for overlay scrollbars | |
| 174 // on Aura platforms. | |
| 175 switch (part) { | |
| 176 case kScrollbarHorizontalThumb: | |
| 177 case kScrollbarVerticalThumb: | |
| 178 PaintScrollbarThumbStateTransition( | |
| 179 canvas, startState, endState, progress, rect); | |
| 180 break; | |
| 181 default: | |
| 182 NOTREACHED() << "Does not support state transition for this part:" | |
| 183 << part; | |
| 184 break; | |
| 185 } | |
| 186 return; | |
| 187 } | |
| 188 | |
| 189 void NativeThemeBase::Paint(SkCanvas* canvas, | |
| 190 Part part, | |
| 191 State state, | |
| 192 const gfx::Rect& rect, | |
| 193 const ExtraParams& extra) const { | |
| 194 if (rect.IsEmpty()) | |
| 195 return; | |
| 196 | |
| 197 switch (part) { | |
| 198 // Please keep these in the order of NativeTheme::Part. | |
| 199 case kComboboxArrow: | |
| 200 CommonThemePaintComboboxArrow(canvas, rect); | |
| 201 break; | |
| 202 case kCheckbox: | |
| 203 PaintCheckbox(canvas, state, rect, extra.button); | |
| 204 break; | |
| 205 case kInnerSpinButton: | |
| 206 PaintInnerSpinButton(canvas, state, rect, extra.inner_spin); | |
| 207 break; | |
| 208 case kMenuList: | |
| 209 PaintMenuList(canvas, state, rect, extra.menu_list); | |
| 210 break; | |
| 211 case kMenuCheck: | |
| 212 case kMenuCheckBackground: | |
| 213 case kMenuPopupArrow: | |
| 214 NOTIMPLEMENTED(); | |
| 215 break; | |
| 216 case kMenuPopupBackground: | |
| 217 PaintMenuPopupBackground(canvas, rect.size(), extra.menu_background); | |
| 218 break; | |
| 219 case kMenuPopupGutter: | |
| 220 case kMenuPopupSeparator: | |
| 221 NOTIMPLEMENTED(); | |
| 222 break; | |
| 223 case kMenuItemBackground: | |
| 224 PaintMenuItemBackground(canvas, state, rect, extra.menu_list); | |
| 225 break; | |
| 226 case kProgressBar: | |
| 227 PaintProgressBar(canvas, state, rect, extra.progress_bar); | |
| 228 break; | |
| 229 case kPushButton: | |
| 230 PaintButton(canvas, state, rect, extra.button); | |
| 231 break; | |
| 232 case kRadio: | |
| 233 PaintRadio(canvas, state, rect, extra.button); | |
| 234 break; | |
| 235 case kScrollbarDownArrow: | |
| 236 case kScrollbarUpArrow: | |
| 237 case kScrollbarLeftArrow: | |
| 238 case kScrollbarRightArrow: | |
| 239 if (scrollbar_button_length_ > 0) | |
| 240 PaintArrowButton(canvas, rect, part, state); | |
| 241 break; | |
| 242 case kScrollbarHorizontalThumb: | |
| 243 case kScrollbarVerticalThumb: | |
| 244 PaintScrollbarThumb(canvas, part, state, rect); | |
| 245 break; | |
| 246 case kScrollbarHorizontalTrack: | |
| 247 case kScrollbarVerticalTrack: | |
| 248 PaintScrollbarTrack(canvas, part, state, extra.scrollbar_track, rect); | |
| 249 break; | |
| 250 case kScrollbarHorizontalGripper: | |
| 251 case kScrollbarVerticalGripper: | |
| 252 // Invoked by views scrollbar code, don't care about for non-win | |
| 253 // implementations, so no NOTIMPLEMENTED. | |
| 254 break; | |
| 255 case kScrollbarCorner: | |
| 256 PaintScrollbarCorner(canvas, state, rect); | |
| 257 break; | |
| 258 case kSliderTrack: | |
| 259 PaintSliderTrack(canvas, state, rect, extra.slider); | |
| 260 break; | |
| 261 case kSliderThumb: | |
| 262 PaintSliderThumb(canvas, state, rect, extra.slider); | |
| 263 break; | |
| 264 case kTabPanelBackground: | |
| 265 NOTIMPLEMENTED(); | |
| 266 break; | |
| 267 case kTextField: | |
| 268 PaintTextField(canvas, state, rect, extra.text_field); | |
| 269 break; | |
| 270 case kTrackbarThumb: | |
| 271 case kTrackbarTrack: | |
| 272 case kWindowResizeGripper: | |
| 273 NOTIMPLEMENTED(); | |
| 274 break; | |
| 275 default: | |
| 276 NOTREACHED() << "Unknown theme part: " << part; | |
| 277 break; | |
| 278 } | |
| 279 } | |
| 280 | |
| 281 NativeThemeBase::NativeThemeBase() | |
| 282 : scrollbar_width_(kDefaultScrollbarWidth), | |
| 283 scrollbar_button_length_(kDefaultScrollbarButtonLength) { | |
| 284 } | |
| 285 | |
| 286 NativeThemeBase::~NativeThemeBase() { | |
| 287 } | |
| 288 | |
| 289 void NativeThemeBase::PaintArrowButton( | |
| 290 SkCanvas* canvas, | |
| 291 const gfx::Rect& rect, Part direction, State state) const { | |
| 292 SkPaint paint; | |
| 293 | |
| 294 // Calculate button color. | |
| 295 SkScalar trackHSV[3]; | |
| 296 SkColorToHSV(track_color_, trackHSV); | |
| 297 SkColor buttonColor = SaturateAndBrighten(trackHSV, 0, 0.2f); | |
| 298 SkColor backgroundColor = buttonColor; | |
| 299 if (state == kPressed) { | |
| 300 SkScalar buttonHSV[3]; | |
| 301 SkColorToHSV(buttonColor, buttonHSV); | |
| 302 buttonColor = SaturateAndBrighten(buttonHSV, 0, -0.1f); | |
| 303 } else if (state == kHovered) { | |
| 304 SkScalar buttonHSV[3]; | |
| 305 SkColorToHSV(buttonColor, buttonHSV); | |
| 306 buttonColor = SaturateAndBrighten(buttonHSV, 0, 0.05f); | |
| 307 } | |
| 308 | |
| 309 SkIRect skrect; | |
| 310 skrect.set(rect.x(), rect.y(), rect.x() + rect.width(), rect.y() | |
| 311 + rect.height()); | |
| 312 // Paint the background (the area visible behind the rounded corners). | |
| 313 paint.setColor(backgroundColor); | |
| 314 canvas->drawIRect(skrect, paint); | |
| 315 | |
| 316 // Paint the button's outline and fill the middle | |
| 317 SkPath outline; | |
| 318 switch (direction) { | |
| 319 case kScrollbarUpArrow: | |
| 320 outline.moveTo(rect.x() + 0.5, rect.y() + rect.height() + 0.5); | |
| 321 outline.rLineTo(0, -(rect.height() - 2)); | |
| 322 outline.rLineTo(2, -2); | |
| 323 outline.rLineTo(rect.width() - 5, 0); | |
| 324 outline.rLineTo(2, 2); | |
| 325 outline.rLineTo(0, rect.height() - 2); | |
| 326 break; | |
| 327 case kScrollbarDownArrow: | |
| 328 outline.moveTo(rect.x() + 0.5, rect.y() - 0.5); | |
| 329 outline.rLineTo(0, rect.height() - 2); | |
| 330 outline.rLineTo(2, 2); | |
| 331 outline.rLineTo(rect.width() - 5, 0); | |
| 332 outline.rLineTo(2, -2); | |
| 333 outline.rLineTo(0, -(rect.height() - 2)); | |
| 334 break; | |
| 335 case kScrollbarRightArrow: | |
| 336 outline.moveTo(rect.x() - 0.5, rect.y() + 0.5); | |
| 337 outline.rLineTo(rect.width() - 2, 0); | |
| 338 outline.rLineTo(2, 2); | |
| 339 outline.rLineTo(0, rect.height() - 5); | |
| 340 outline.rLineTo(-2, 2); | |
| 341 outline.rLineTo(-(rect.width() - 2), 0); | |
| 342 break; | |
| 343 case kScrollbarLeftArrow: | |
| 344 outline.moveTo(rect.x() + rect.width() + 0.5, rect.y() + 0.5); | |
| 345 outline.rLineTo(-(rect.width() - 2), 0); | |
| 346 outline.rLineTo(-2, 2); | |
| 347 outline.rLineTo(0, rect.height() - 5); | |
| 348 outline.rLineTo(2, 2); | |
| 349 outline.rLineTo(rect.width() - 2, 0); | |
| 350 break; | |
| 351 default: | |
| 352 break; | |
| 353 } | |
| 354 outline.close(); | |
| 355 | |
| 356 paint.setStyle(SkPaint::kFill_Style); | |
| 357 paint.setColor(buttonColor); | |
| 358 canvas->drawPath(outline, paint); | |
| 359 | |
| 360 paint.setAntiAlias(true); | |
| 361 paint.setStyle(SkPaint::kStroke_Style); | |
| 362 SkScalar thumbHSV[3]; | |
| 363 SkColorToHSV(thumb_inactive_color_, thumbHSV); | |
| 364 paint.setColor(OutlineColor(trackHSV, thumbHSV)); | |
| 365 canvas->drawPath(outline, paint); | |
| 366 | |
| 367 PaintArrow(canvas, rect, direction, GetArrowColor(state)); | |
| 368 } | |
| 369 | |
| 370 void NativeThemeBase::PaintArrow(SkCanvas* gc, | |
| 371 const gfx::Rect& rect, | |
| 372 Part direction, | |
| 373 SkColor color) const { | |
| 374 int width_middle, length_middle; | |
| 375 if (direction == kScrollbarUpArrow || direction == kScrollbarDownArrow) { | |
| 376 width_middle = rect.width() / 2 + 1; | |
| 377 length_middle = rect.height() / 2 + 1; | |
| 378 } else { | |
| 379 length_middle = rect.width() / 2 + 1; | |
| 380 width_middle = rect.height() / 2 + 1; | |
| 381 } | |
| 382 | |
| 383 SkPaint paint; | |
| 384 paint.setColor(color); | |
| 385 paint.setAntiAlias(false); | |
| 386 paint.setStyle(SkPaint::kFill_Style); | |
| 387 | |
| 388 SkPath path; | |
| 389 // The constants in this block of code are hand-tailored to produce good | |
| 390 // looking arrows without anti-aliasing. | |
| 391 switch (direction) { | |
| 392 case kScrollbarUpArrow: | |
| 393 path.moveTo(rect.x() + width_middle - 4, rect.y() + length_middle + 2); | |
| 394 path.rLineTo(7, 0); | |
| 395 path.rLineTo(-4, -4); | |
| 396 break; | |
| 397 case kScrollbarDownArrow: | |
| 398 path.moveTo(rect.x() + width_middle - 4, rect.y() + length_middle - 3); | |
| 399 path.rLineTo(7, 0); | |
| 400 path.rLineTo(-4, 4); | |
| 401 break; | |
| 402 case kScrollbarRightArrow: | |
| 403 path.moveTo(rect.x() + length_middle - 3, rect.y() + width_middle - 4); | |
| 404 path.rLineTo(0, 7); | |
| 405 path.rLineTo(4, -4); | |
| 406 break; | |
| 407 case kScrollbarLeftArrow: | |
| 408 path.moveTo(rect.x() + length_middle + 1, rect.y() + width_middle - 5); | |
| 409 path.rLineTo(0, 9); | |
| 410 path.rLineTo(-4, -4); | |
| 411 break; | |
| 412 default: | |
| 413 break; | |
| 414 } | |
| 415 path.close(); | |
| 416 | |
| 417 gc->drawPath(path, paint); | |
| 418 } | |
| 419 | |
| 420 void NativeThemeBase::PaintScrollbarTrack(SkCanvas* canvas, | |
| 421 Part part, | |
| 422 State state, | |
| 423 const ScrollbarTrackExtraParams& extra_params, | |
| 424 const gfx::Rect& rect) const { | |
| 425 SkPaint paint; | |
| 426 SkIRect skrect; | |
| 427 | |
| 428 skrect.set(rect.x(), rect.y(), rect.right(), rect.bottom()); | |
| 429 SkScalar track_hsv[3]; | |
| 430 SkColorToHSV(track_color_, track_hsv); | |
| 431 paint.setColor(SaturateAndBrighten(track_hsv, 0, 0)); | |
| 432 canvas->drawIRect(skrect, paint); | |
| 433 | |
| 434 SkScalar thumb_hsv[3]; | |
| 435 SkColorToHSV(thumb_inactive_color_, thumb_hsv); | |
| 436 | |
| 437 paint.setColor(OutlineColor(track_hsv, thumb_hsv)); | |
| 438 DrawBox(canvas, rect, paint); | |
| 439 } | |
| 440 | |
| 441 void NativeThemeBase::PaintScrollbarThumb(SkCanvas* canvas, | |
| 442 Part part, | |
| 443 State state, | |
| 444 const gfx::Rect& rect) const { | |
| 445 const bool hovered = state == kHovered; | |
| 446 const int midx = rect.x() + rect.width() / 2; | |
| 447 const int midy = rect.y() + rect.height() / 2; | |
| 448 const bool vertical = part == kScrollbarVerticalThumb; | |
| 449 | |
| 450 SkScalar thumb[3]; | |
| 451 SkColorToHSV(hovered ? thumb_active_color_ : thumb_inactive_color_, thumb); | |
| 452 | |
| 453 SkPaint paint; | |
| 454 paint.setColor(SaturateAndBrighten(thumb, 0, 0.02f)); | |
| 455 | |
| 456 SkIRect skrect; | |
| 457 if (vertical) | |
| 458 skrect.set(rect.x(), rect.y(), midx + 1, rect.y() + rect.height()); | |
| 459 else | |
| 460 skrect.set(rect.x(), rect.y(), rect.x() + rect.width(), midy + 1); | |
| 461 | |
| 462 canvas->drawIRect(skrect, paint); | |
| 463 | |
| 464 paint.setColor(SaturateAndBrighten(thumb, 0, -0.02f)); | |
| 465 | |
| 466 if (vertical) { | |
| 467 skrect.set( | |
| 468 midx + 1, rect.y(), rect.x() + rect.width(), rect.y() + rect.height()); | |
| 469 } else { | |
| 470 skrect.set( | |
| 471 rect.x(), midy + 1, rect.x() + rect.width(), rect.y() + rect.height()); | |
| 472 } | |
| 473 | |
| 474 canvas->drawIRect(skrect, paint); | |
| 475 | |
| 476 SkScalar track[3]; | |
| 477 SkColorToHSV(track_color_, track); | |
| 478 paint.setColor(OutlineColor(track, thumb)); | |
| 479 DrawBox(canvas, rect, paint); | |
| 480 | |
| 481 if (rect.height() > 10 && rect.width() > 10) { | |
| 482 const int grippy_half_width = 2; | |
| 483 const int inter_grippy_offset = 3; | |
| 484 if (vertical) { | |
| 485 DrawHorizLine(canvas, | |
| 486 midx - grippy_half_width, | |
| 487 midx + grippy_half_width, | |
| 488 midy - inter_grippy_offset, | |
| 489 paint); | |
| 490 DrawHorizLine(canvas, | |
| 491 midx - grippy_half_width, | |
| 492 midx + grippy_half_width, | |
| 493 midy, | |
| 494 paint); | |
| 495 DrawHorizLine(canvas, | |
| 496 midx - grippy_half_width, | |
| 497 midx + grippy_half_width, | |
| 498 midy + inter_grippy_offset, | |
| 499 paint); | |
| 500 } else { | |
| 501 DrawVertLine(canvas, | |
| 502 midx - inter_grippy_offset, | |
| 503 midy - grippy_half_width, | |
| 504 midy + grippy_half_width, | |
| 505 paint); | |
| 506 DrawVertLine(canvas, | |
| 507 midx, | |
| 508 midy - grippy_half_width, | |
| 509 midy + grippy_half_width, | |
| 510 paint); | |
| 511 DrawVertLine(canvas, | |
| 512 midx + inter_grippy_offset, | |
| 513 midy - grippy_half_width, | |
| 514 midy + grippy_half_width, | |
| 515 paint); | |
| 516 } | |
| 517 } | |
| 518 } | |
| 519 | |
| 520 void NativeThemeBase::PaintScrollbarCorner(SkCanvas* canvas, | |
| 521 State state, | |
| 522 const gfx::Rect& rect) const { | |
| 523 } | |
| 524 | |
| 525 void NativeThemeBase::PaintCheckbox(SkCanvas* canvas, | |
| 526 State state, | |
| 527 const gfx::Rect& rect, | |
| 528 const ButtonExtraParams& button) const { | |
| 529 SkRect skrect = PaintCheckboxRadioCommon(canvas, state, rect, | |
| 530 SkIntToScalar(2)); | |
| 531 if (!skrect.isEmpty()) { | |
| 532 // Draw the checkmark / dash. | |
| 533 SkPaint paint; | |
| 534 paint.setAntiAlias(true); | |
| 535 paint.setStyle(SkPaint::kStroke_Style); | |
| 536 if (state == kDisabled) | |
| 537 paint.setColor(kCheckboxStrokeDisabledColor); | |
| 538 else | |
| 539 paint.setColor(kCheckboxStrokeColor); | |
| 540 if (button.indeterminate) { | |
| 541 SkPath dash; | |
| 542 dash.moveTo(skrect.x() + skrect.width() * 0.16, | |
| 543 (skrect.y() + skrect.bottom()) / 2); | |
| 544 dash.rLineTo(skrect.width() * 0.68, 0); | |
| 545 paint.setStrokeWidth(SkFloatToScalar(skrect.height() * 0.2)); | |
| 546 canvas->drawPath(dash, paint); | |
| 547 } else if (button.checked) { | |
| 548 SkPath check; | |
| 549 check.moveTo(skrect.x() + skrect.width() * 0.2, | |
| 550 skrect.y() + skrect.height() * 0.5); | |
| 551 check.rLineTo(skrect.width() * 0.2, skrect.height() * 0.2); | |
| 552 paint.setStrokeWidth(SkFloatToScalar(skrect.height() * 0.23)); | |
| 553 check.lineTo(skrect.right() - skrect.width() * 0.2, | |
| 554 skrect.y() + skrect.height() * 0.2); | |
| 555 canvas->drawPath(check, paint); | |
| 556 } | |
| 557 } | |
| 558 } | |
| 559 | |
| 560 // Draws the common elements of checkboxes and radio buttons. | |
| 561 // Returns the rectangle within which any additional decorations should be | |
| 562 // drawn, or empty if none. | |
| 563 SkRect NativeThemeBase::PaintCheckboxRadioCommon( | |
| 564 SkCanvas* canvas, | |
| 565 State state, | |
| 566 const gfx::Rect& rect, | |
| 567 const SkScalar borderRadius) const { | |
| 568 | |
| 569 SkRect skrect = gfx::RectToSkRect(rect); | |
| 570 | |
| 571 // Use the largest square that fits inside the provided rectangle. | |
| 572 // No other browser seems to support non-square widget, so accidentally | |
| 573 // having non-square sizes is common (eg. amazon and webkit dev tools). | |
| 574 if (skrect.width() != skrect.height()) { | |
| 575 SkScalar size = SkMinScalar(skrect.width(), skrect.height()); | |
| 576 skrect.inset((skrect.width() - size) / 2, (skrect.height() - size) / 2); | |
| 577 } | |
| 578 | |
| 579 // If the rectangle is too small then paint only a rectangle. We don't want | |
| 580 // to have to worry about '- 1' and '+ 1' calculations below having overflow | |
| 581 // or underflow. | |
| 582 if (skrect.width() <= 2) { | |
| 583 SkPaint paint; | |
| 584 paint.setColor(kCheckboxTinyColor); | |
| 585 paint.setStyle(SkPaint::kFill_Style); | |
| 586 canvas->drawRect(skrect, paint); | |
| 587 // Too small to draw anything more. | |
| 588 return SkRect::MakeEmpty(); | |
| 589 } | |
| 590 | |
| 591 // Make room for the drop shadow. | |
| 592 skrect.iset(skrect.x(), skrect.y(), skrect.right() - 1, skrect.bottom() - 1); | |
| 593 | |
| 594 // Draw the drop shadow below the widget. | |
| 595 if (state != kPressed) { | |
| 596 SkPaint paint; | |
| 597 paint.setAntiAlias(true); | |
| 598 SkRect shadowRect = skrect; | |
| 599 shadowRect.offset(0, 1); | |
| 600 if (state == kDisabled) | |
| 601 paint.setColor(kCheckboxShadowDisabledColor); | |
| 602 else if (state == kHovered) | |
| 603 paint.setColor(kCheckboxShadowHoveredColor); | |
| 604 else | |
| 605 paint.setColor(kCheckboxShadowColor); | |
| 606 paint.setStyle(SkPaint::kFill_Style); | |
| 607 canvas->drawRoundRect(shadowRect, borderRadius, borderRadius, paint); | |
| 608 } | |
| 609 | |
| 610 // Draw the gradient-filled rectangle | |
| 611 SkPoint gradient_bounds[3]; | |
| 612 gradient_bounds[0].set(skrect.x(), skrect.y()); | |
| 613 gradient_bounds[1].set(skrect.x(), skrect.y() + skrect.height() * 0.38); | |
| 614 gradient_bounds[2].set(skrect.x(), skrect.bottom()); | |
| 615 const SkColor* startEndColors; | |
| 616 if (state == kPressed) | |
| 617 startEndColors = kCheckboxGradientPressedColors; | |
| 618 else if (state == kHovered) | |
| 619 startEndColors = kCheckboxGradientHoveredColors; | |
| 620 else if (state == kDisabled) | |
| 621 startEndColors = kCheckboxGradientDisabledColors; | |
| 622 else /* kNormal */ | |
| 623 startEndColors = kCheckboxGradientColors; | |
| 624 SkColor colors[3] = {startEndColors[0], startEndColors[0], startEndColors[1]}; | |
| 625 skia::RefPtr<SkShader> shader = skia::AdoptRef( | |
| 626 SkGradientShader::CreateLinear( | |
| 627 gradient_bounds, colors, NULL, 3, SkShader::kClamp_TileMode)); | |
| 628 SkPaint paint; | |
| 629 paint.setAntiAlias(true); | |
| 630 paint.setShader(shader.get()); | |
| 631 paint.setStyle(SkPaint::kFill_Style); | |
| 632 canvas->drawRoundRect(skrect, borderRadius, borderRadius, paint); | |
| 633 paint.setShader(NULL); | |
| 634 | |
| 635 // Draw the border. | |
| 636 if (state == kHovered) | |
| 637 paint.setColor(kCheckboxBorderHoveredColor); | |
| 638 else if (state == kDisabled) | |
| 639 paint.setColor(kCheckboxBorderDisabledColor); | |
| 640 else | |
| 641 paint.setColor(kCheckboxBorderColor); | |
| 642 paint.setStyle(SkPaint::kStroke_Style); | |
| 643 paint.setStrokeWidth(SkIntToScalar(1)); | |
| 644 skrect.inset(SkFloatToScalar(.5f), SkFloatToScalar(.5f)); | |
| 645 canvas->drawRoundRect(skrect, borderRadius, borderRadius, paint); | |
| 646 | |
| 647 // Return the rectangle excluding the drop shadow for drawing any additional | |
| 648 // decorations. | |
| 649 return skrect; | |
| 650 } | |
| 651 | |
| 652 void NativeThemeBase::PaintRadio(SkCanvas* canvas, | |
| 653 State state, | |
| 654 const gfx::Rect& rect, | |
| 655 const ButtonExtraParams& button) const { | |
| 656 | |
| 657 // Most of a radio button is the same as a checkbox, except the the rounded | |
| 658 // square is a circle (i.e. border radius >= 100%). | |
| 659 const SkScalar radius = SkFloatToScalar( | |
| 660 static_cast<float>(std::max(rect.width(), rect.height())) / 2); | |
| 661 SkRect skrect = PaintCheckboxRadioCommon(canvas, state, rect, radius); | |
| 662 if (!skrect.isEmpty() && button.checked) { | |
| 663 // Draw the dot. | |
| 664 SkPaint paint; | |
| 665 paint.setAntiAlias(true); | |
| 666 paint.setStyle(SkPaint::kFill_Style); | |
| 667 if (state == kDisabled) | |
| 668 paint.setColor(kRadioDotDisabledColor); | |
| 669 else | |
| 670 paint.setColor(kRadioDotColor); | |
| 671 skrect.inset(skrect.width() * 0.25, skrect.height() * 0.25); | |
| 672 // Use drawRoundedRect instead of drawOval to be completely consistent | |
| 673 // with the border in PaintCheckboxRadioNewCommon. | |
| 674 canvas->drawRoundRect(skrect, radius, radius, paint); | |
| 675 } | |
| 676 } | |
| 677 | |
| 678 void NativeThemeBase::PaintButton(SkCanvas* canvas, | |
| 679 State state, | |
| 680 const gfx::Rect& rect, | |
| 681 const ButtonExtraParams& button) const { | |
| 682 SkPaint paint; | |
| 683 const int kRight = rect.right(); | |
| 684 const int kBottom = rect.bottom(); | |
| 685 SkRect skrect = SkRect::MakeLTRB(rect.x(), rect.y(), kRight, kBottom); | |
| 686 SkColor base_color = button.background_color; | |
| 687 | |
| 688 color_utils::HSL base_hsl; | |
| 689 color_utils::SkColorToHSL(base_color, &base_hsl); | |
| 690 | |
| 691 // Our standard gradient is from 0xdd to 0xf8. This is the amount of | |
| 692 // increased luminance between those values. | |
| 693 SkColor light_color(BrightenColor(base_hsl, SkColorGetA(base_color), 0.105)); | |
| 694 | |
| 695 // If the button is too small, fallback to drawing a single, solid color | |
| 696 if (rect.width() < 5 || rect.height() < 5) { | |
| 697 paint.setColor(base_color); | |
| 698 canvas->drawRect(skrect, paint); | |
| 699 return; | |
| 700 } | |
| 701 | |
| 702 paint.setColor(SK_ColorBLACK); | |
| 703 const int kLightEnd = state == kPressed ? 1 : 0; | |
| 704 const int kDarkEnd = !kLightEnd; | |
| 705 SkPoint gradient_bounds[2]; | |
| 706 gradient_bounds[kLightEnd].iset(rect.x(), rect.y()); | |
| 707 gradient_bounds[kDarkEnd].iset(rect.x(), kBottom - 1); | |
| 708 SkColor colors[2]; | |
| 709 colors[0] = light_color; | |
| 710 colors[1] = base_color; | |
| 711 | |
| 712 skia::RefPtr<SkShader> shader = skia::AdoptRef( | |
| 713 SkGradientShader::CreateLinear( | |
| 714 gradient_bounds, colors, NULL, 2, SkShader::kClamp_TileMode)); | |
| 715 paint.setStyle(SkPaint::kFill_Style); | |
| 716 paint.setAntiAlias(true); | |
| 717 paint.setShader(shader.get()); | |
| 718 | |
| 719 canvas->drawRoundRect(skrect, SkIntToScalar(1), SkIntToScalar(1), paint); | |
| 720 paint.setShader(NULL); | |
| 721 | |
| 722 if (button.has_border) { | |
| 723 int border_alpha = state == kHovered ? 0x80 : 0x55; | |
| 724 if (button.is_focused) { | |
| 725 border_alpha = 0xff; | |
| 726 paint.setColor(GetSystemColor(kColorId_FocusedBorderColor)); | |
| 727 } | |
| 728 paint.setStyle(SkPaint::kStroke_Style); | |
| 729 paint.setStrokeWidth(SkIntToScalar(1)); | |
| 730 paint.setAlpha(border_alpha); | |
| 731 skrect.inset(SkFloatToScalar(.5f), SkFloatToScalar(.5f)); | |
| 732 canvas->drawRoundRect(skrect, SkIntToScalar(1), SkIntToScalar(1), paint); | |
| 733 } | |
| 734 } | |
| 735 | |
| 736 void NativeThemeBase::PaintTextField(SkCanvas* canvas, | |
| 737 State state, | |
| 738 const gfx::Rect& rect, | |
| 739 const TextFieldExtraParams& text) const { | |
| 740 SkRect bounds; | |
| 741 bounds.set(rect.x(), rect.y(), rect.right() - 1, rect.bottom() - 1); | |
| 742 | |
| 743 SkPaint fill_paint; | |
| 744 fill_paint.setStyle(SkPaint::kFill_Style); | |
| 745 fill_paint.setColor(text.background_color); | |
| 746 canvas->drawRect(bounds, fill_paint); | |
| 747 | |
| 748 // Text INPUT, listbox SELECT, and TEXTAREA have consistent borders. | |
| 749 // border: 1px solid #a9a9a9 | |
| 750 SkPaint stroke_paint; | |
| 751 stroke_paint.setStyle(SkPaint::kStroke_Style); | |
| 752 stroke_paint.setColor(kTextBorderColor); | |
| 753 canvas->drawRect(bounds, stroke_paint); | |
| 754 } | |
| 755 | |
| 756 void NativeThemeBase::PaintMenuList( | |
| 757 SkCanvas* canvas, | |
| 758 State state, | |
| 759 const gfx::Rect& rect, | |
| 760 const MenuListExtraParams& menu_list) const { | |
| 761 // If a border radius is specified, we let the WebCore paint the background | |
| 762 // and the border of the control. | |
| 763 if (!menu_list.has_border_radius) { | |
| 764 ButtonExtraParams button = { 0 }; | |
| 765 button.background_color = menu_list.background_color; | |
| 766 button.has_border = menu_list.has_border; | |
| 767 PaintButton(canvas, state, rect, button); | |
| 768 } | |
| 769 | |
| 770 SkPaint paint; | |
| 771 paint.setColor(SK_ColorBLACK); | |
| 772 paint.setAntiAlias(true); | |
| 773 paint.setStyle(SkPaint::kFill_Style); | |
| 774 | |
| 775 SkPath path; | |
| 776 path.moveTo(menu_list.arrow_x, menu_list.arrow_y - 3); | |
| 777 path.rLineTo(6, 0); | |
| 778 path.rLineTo(-3, 6); | |
| 779 path.close(); | |
| 780 canvas->drawPath(path, paint); | |
| 781 } | |
| 782 | |
| 783 void NativeThemeBase::PaintMenuPopupBackground( | |
| 784 SkCanvas* canvas, | |
| 785 const gfx::Size& size, | |
| 786 const MenuBackgroundExtraParams& menu_background) const { | |
| 787 canvas->drawColor(kMenuPopupBackgroundColor, SkXfermode::kSrc_Mode); | |
| 788 } | |
| 789 | |
| 790 void NativeThemeBase::PaintMenuItemBackground( | |
| 791 SkCanvas* canvas, | |
| 792 State state, | |
| 793 const gfx::Rect& rect, | |
| 794 const MenuListExtraParams& menu_list) const { | |
| 795 // By default don't draw anything over the normal background. | |
| 796 } | |
| 797 | |
| 798 void NativeThemeBase::PaintSliderTrack(SkCanvas* canvas, | |
| 799 State state, | |
| 800 const gfx::Rect& rect, | |
| 801 const SliderExtraParams& slider) const { | |
| 802 const int kMidX = rect.x() + rect.width() / 2; | |
| 803 const int kMidY = rect.y() + rect.height() / 2; | |
| 804 | |
| 805 SkPaint paint; | |
| 806 paint.setColor(kSliderTrackBackgroundColor); | |
| 807 | |
| 808 SkRect skrect; | |
| 809 if (slider.vertical) { | |
| 810 skrect.set(std::max(rect.x(), kMidX - 2), | |
| 811 rect.y(), | |
| 812 std::min(rect.right(), kMidX + 2), | |
| 813 rect.bottom()); | |
| 814 } else { | |
| 815 skrect.set(rect.x(), | |
| 816 std::max(rect.y(), kMidY - 2), | |
| 817 rect.right(), | |
| 818 std::min(rect.bottom(), kMidY + 2)); | |
| 819 } | |
| 820 canvas->drawRect(skrect, paint); | |
| 821 } | |
| 822 | |
| 823 void NativeThemeBase::PaintSliderThumb(SkCanvas* canvas, | |
| 824 State state, | |
| 825 const gfx::Rect& rect, | |
| 826 const SliderExtraParams& slider) const { | |
| 827 const bool hovered = (state == kHovered) || slider.in_drag; | |
| 828 const int kMidX = rect.x() + rect.width() / 2; | |
| 829 const int kMidY = rect.y() + rect.height() / 2; | |
| 830 | |
| 831 SkPaint paint; | |
| 832 paint.setColor(hovered ? SK_ColorWHITE : kSliderThumbLightGrey); | |
| 833 | |
| 834 SkIRect skrect; | |
| 835 if (slider.vertical) | |
| 836 skrect.set(rect.x(), rect.y(), kMidX + 1, rect.bottom()); | |
| 837 else | |
| 838 skrect.set(rect.x(), rect.y(), rect.right(), kMidY + 1); | |
| 839 | |
| 840 canvas->drawIRect(skrect, paint); | |
| 841 | |
| 842 paint.setColor(hovered ? kSliderThumbLightGrey : kSliderThumbDarkGrey); | |
| 843 | |
| 844 if (slider.vertical) | |
| 845 skrect.set(kMidX + 1, rect.y(), rect.right(), rect.bottom()); | |
| 846 else | |
| 847 skrect.set(rect.x(), kMidY + 1, rect.right(), rect.bottom()); | |
| 848 | |
| 849 canvas->drawIRect(skrect, paint); | |
| 850 | |
| 851 paint.setColor(kSliderThumbBorderDarkGrey); | |
| 852 DrawBox(canvas, rect, paint); | |
| 853 | |
| 854 if (rect.height() > 10 && rect.width() > 10) { | |
| 855 DrawHorizLine(canvas, kMidX - 2, kMidX + 2, kMidY, paint); | |
| 856 DrawHorizLine(canvas, kMidX - 2, kMidX + 2, kMidY - 3, paint); | |
| 857 DrawHorizLine(canvas, kMidX - 2, kMidX + 2, kMidY + 3, paint); | |
| 858 } | |
| 859 } | |
| 860 | |
| 861 void NativeThemeBase::PaintInnerSpinButton(SkCanvas* canvas, | |
| 862 State state, | |
| 863 const gfx::Rect& rect, | |
| 864 const InnerSpinButtonExtraParams& spin_button) const { | |
| 865 if (spin_button.read_only) | |
| 866 state = kDisabled; | |
| 867 | |
| 868 State north_state = state; | |
| 869 State south_state = state; | |
| 870 if (spin_button.spin_up) | |
| 871 south_state = south_state != kDisabled ? kNormal : kDisabled; | |
| 872 else | |
| 873 north_state = north_state != kDisabled ? kNormal : kDisabled; | |
| 874 | |
| 875 gfx::Rect half = rect; | |
| 876 half.set_height(rect.height() / 2); | |
| 877 PaintArrowButton(canvas, half, kScrollbarUpArrow, north_state); | |
| 878 | |
| 879 half.set_y(rect.y() + rect.height() / 2); | |
| 880 PaintArrowButton(canvas, half, kScrollbarDownArrow, south_state); | |
| 881 } | |
| 882 | |
| 883 void NativeThemeBase::PaintProgressBar(SkCanvas* canvas, | |
| 884 State state, | |
| 885 const gfx::Rect& rect, | |
| 886 const ProgressBarExtraParams& progress_bar) const { | |
| 887 ResourceBundle& rb = ResourceBundle::GetSharedInstance(); | |
| 888 gfx::ImageSkia* bar_image = rb.GetImageSkiaNamed(IDR_PROGRESS_BAR); | |
| 889 gfx::ImageSkia* left_border_image = rb.GetImageSkiaNamed( | |
| 890 IDR_PROGRESS_BORDER_LEFT); | |
| 891 gfx::ImageSkia* right_border_image = rb.GetImageSkiaNamed( | |
| 892 IDR_PROGRESS_BORDER_RIGHT); | |
| 893 | |
| 894 DCHECK(bar_image->width() > 0); | |
| 895 DCHECK(rect.width() > 0); | |
| 896 | |
| 897 float tile_scale_y = static_cast<float>(rect.height()) / bar_image->height(); | |
| 898 | |
| 899 int dest_left_border_width = left_border_image->width(); | |
| 900 int dest_right_border_width = right_border_image->width(); | |
| 901 | |
| 902 // Since an implicit float -> int conversion will truncate, we want to make | |
| 903 // sure that if a border is desired, it gets at least one pixel. | |
| 904 if (dest_left_border_width > 0) { | |
| 905 dest_left_border_width = dest_left_border_width * tile_scale_y; | |
| 906 dest_left_border_width = std::max(dest_left_border_width, 1); | |
| 907 } | |
| 908 if (dest_right_border_width > 0) { | |
| 909 dest_right_border_width = dest_right_border_width * tile_scale_y; | |
| 910 dest_right_border_width = std::max(dest_right_border_width, 1); | |
| 911 } | |
| 912 | |
| 913 // Since the width of the progress bar may not be evenly divisible by the | |
| 914 // tile size, in order to make it look right we may need to draw some of the | |
| 915 // with a width of 1 pixel smaller than the rest of the tiles. | |
| 916 int new_tile_width = static_cast<int>(bar_image->width() * tile_scale_y); | |
| 917 new_tile_width = std::max(new_tile_width, 1); | |
| 918 | |
| 919 float tile_scale_x = static_cast<float>(new_tile_width) / bar_image->width(); | |
| 920 if (rect.width() % new_tile_width == 0) { | |
| 921 DrawTiledImage(canvas, *bar_image, 0, 0, tile_scale_x, tile_scale_y, | |
| 922 rect.x(), rect.y(), | |
| 923 rect.width(), rect.height()); | |
| 924 } else { | |
| 925 int num_tiles = 1 + rect.width() / new_tile_width; | |
| 926 int overshoot = num_tiles * new_tile_width - rect.width(); | |
| 927 // Since |overshoot| represents the number of tiles that were too big, draw | |
| 928 // |overshoot| tiles with their width reduced by 1. | |
| 929 int num_big_tiles = num_tiles - overshoot; | |
| 930 int num_small_tiles = overshoot; | |
| 931 int small_width = new_tile_width - 1; | |
| 932 float small_scale_x = static_cast<float>(small_width) / bar_image->width(); | |
| 933 float big_scale_x = tile_scale_x; | |
| 934 | |
| 935 gfx::Rect big_rect = rect; | |
| 936 gfx::Rect small_rect = rect; | |
| 937 big_rect.Inset(0, 0, num_small_tiles*small_width, 0); | |
| 938 small_rect.Inset(num_big_tiles*new_tile_width, 0, 0, 0); | |
| 939 | |
| 940 DrawTiledImage(canvas, *bar_image, 0, 0, big_scale_x, tile_scale_y, | |
| 941 big_rect.x(), big_rect.y(), big_rect.width(), big_rect.height()); | |
| 942 DrawTiledImage(canvas, *bar_image, 0, 0, small_scale_x, tile_scale_y, | |
| 943 small_rect.x(), small_rect.y(), small_rect.width(), small_rect.height()); | |
| 944 } | |
| 945 if (progress_bar.value_rect_width) { | |
| 946 gfx::ImageSkia* value_image = rb.GetImageSkiaNamed(IDR_PROGRESS_VALUE); | |
| 947 | |
| 948 new_tile_width = static_cast<int>(value_image->width() * tile_scale_y); | |
| 949 tile_scale_x = static_cast<float>(new_tile_width) / | |
| 950 value_image->width(); | |
| 951 | |
| 952 DrawTiledImage(canvas, *value_image, 0, 0, tile_scale_x, tile_scale_y, | |
| 953 progress_bar.value_rect_x, | |
| 954 progress_bar.value_rect_y, | |
| 955 progress_bar.value_rect_width, | |
| 956 progress_bar.value_rect_height); | |
| 957 } | |
| 958 | |
| 959 DrawImageInt(canvas, *left_border_image, 0, 0, left_border_image->width(), | |
| 960 left_border_image->height(), rect.x(), rect.y(), dest_left_border_width, | |
| 961 rect.height()); | |
| 962 | |
| 963 int dest_x = rect.right() - dest_right_border_width; | |
| 964 DrawImageInt(canvas, *right_border_image, 0, 0, right_border_image->width(), | |
| 965 right_border_image->height(), dest_x, rect.y(), | |
| 966 dest_right_border_width, rect.height()); | |
| 967 } | |
| 968 | |
| 969 bool NativeThemeBase::IntersectsClipRectInt(SkCanvas* canvas, | |
| 970 int x, int y, int w, int h) const { | |
| 971 SkRect clip; | |
| 972 return canvas->getClipBounds(&clip) && | |
| 973 clip.intersect(SkIntToScalar(x), SkIntToScalar(y), SkIntToScalar(x + w), | |
| 974 SkIntToScalar(y + h)); | |
| 975 } | |
| 976 | |
| 977 void NativeThemeBase::DrawImageInt( | |
| 978 SkCanvas* sk_canvas, const gfx::ImageSkia& image, | |
| 979 int src_x, int src_y, int src_w, int src_h, | |
| 980 int dest_x, int dest_y, int dest_w, int dest_h) const { | |
| 981 scoped_ptr<gfx::Canvas> canvas(CommonThemeCreateCanvas(sk_canvas)); | |
| 982 canvas->DrawImageInt(image, src_x, src_y, src_w, src_h, | |
| 983 dest_x, dest_y, dest_w, dest_h, true); | |
| 984 } | |
| 985 | |
| 986 void NativeThemeBase::DrawTiledImage(SkCanvas* sk_canvas, | |
| 987 const gfx::ImageSkia& image, | |
| 988 int src_x, int src_y, float tile_scale_x, float tile_scale_y, | |
| 989 int dest_x, int dest_y, int w, int h) const { | |
| 990 scoped_ptr<gfx::Canvas> canvas(CommonThemeCreateCanvas(sk_canvas)); | |
| 991 canvas->TileImageInt(image, src_x, src_y, tile_scale_x, | |
| 992 tile_scale_y, dest_x, dest_y, w, h); | |
| 993 } | |
| 994 | |
| 995 SkColor NativeThemeBase::SaturateAndBrighten(SkScalar* hsv, | |
| 996 SkScalar saturate_amount, | |
| 997 SkScalar brighten_amount) const { | |
| 998 SkScalar color[3]; | |
| 999 color[0] = hsv[0]; | |
| 1000 color[1] = Clamp(hsv[1] + saturate_amount, 0.0, 1.0); | |
| 1001 color[2] = Clamp(hsv[2] + brighten_amount, 0.0, 1.0); | |
| 1002 return SkHSVToColor(color); | |
| 1003 } | |
| 1004 | |
| 1005 SkColor NativeThemeBase::GetArrowColor(State state) const { | |
| 1006 if (state != kDisabled) | |
| 1007 return SK_ColorBLACK; | |
| 1008 | |
| 1009 SkScalar track_hsv[3]; | |
| 1010 SkColorToHSV(track_color_, track_hsv); | |
| 1011 SkScalar thumb_hsv[3]; | |
| 1012 SkColorToHSV(thumb_inactive_color_, thumb_hsv); | |
| 1013 return OutlineColor(track_hsv, thumb_hsv); | |
| 1014 } | |
| 1015 | |
| 1016 void NativeThemeBase::DrawVertLine(SkCanvas* canvas, | |
| 1017 int x, | |
| 1018 int y1, | |
| 1019 int y2, | |
| 1020 const SkPaint& paint) const { | |
| 1021 SkIRect skrect; | |
| 1022 skrect.set(x, y1, x + 1, y2 + 1); | |
| 1023 canvas->drawIRect(skrect, paint); | |
| 1024 } | |
| 1025 | |
| 1026 void NativeThemeBase::DrawHorizLine(SkCanvas* canvas, | |
| 1027 int x1, | |
| 1028 int x2, | |
| 1029 int y, | |
| 1030 const SkPaint& paint) const { | |
| 1031 SkIRect skrect; | |
| 1032 skrect.set(x1, y, x2 + 1, y + 1); | |
| 1033 canvas->drawIRect(skrect, paint); | |
| 1034 } | |
| 1035 | |
| 1036 void NativeThemeBase::DrawBox(SkCanvas* canvas, | |
| 1037 const gfx::Rect& rect, | |
| 1038 const SkPaint& paint) const { | |
| 1039 const int right = rect.x() + rect.width() - 1; | |
| 1040 const int bottom = rect.y() + rect.height() - 1; | |
| 1041 DrawHorizLine(canvas, rect.x(), right, rect.y(), paint); | |
| 1042 DrawVertLine(canvas, right, rect.y(), bottom, paint); | |
| 1043 DrawHorizLine(canvas, rect.x(), right, bottom, paint); | |
| 1044 DrawVertLine(canvas, rect.x(), rect.y(), bottom, paint); | |
| 1045 } | |
| 1046 | |
| 1047 SkScalar NativeThemeBase::Clamp(SkScalar value, | |
| 1048 SkScalar min, | |
| 1049 SkScalar max) const { | |
| 1050 return std::min(std::max(value, min), max); | |
| 1051 } | |
| 1052 | |
| 1053 SkColor NativeThemeBase::OutlineColor(SkScalar* hsv1, SkScalar* hsv2) const { | |
| 1054 // GTK Theme engines have way too much control over the layout of | |
| 1055 // the scrollbar. We might be able to more closely approximate its | |
| 1056 // look-and-feel, if we sent whole images instead of just colors | |
| 1057 // from the browser to the renderer. But even then, some themes | |
| 1058 // would just break. | |
| 1059 // | |
| 1060 // So, instead, we don't even try to 100% replicate the look of | |
| 1061 // the native scrollbar. We render our own version, but we make | |
| 1062 // sure to pick colors that blend in nicely with the system GTK | |
| 1063 // theme. In most cases, we can just sample a couple of pixels | |
| 1064 // from the system scrollbar and use those colors to draw our | |
| 1065 // scrollbar. | |
| 1066 // | |
| 1067 // This works fine for the track color and the overall thumb | |
| 1068 // color. But it fails spectacularly for the outline color used | |
| 1069 // around the thumb piece. Not all themes have a clearly defined | |
| 1070 // outline. For some of them it is partially transparent, and for | |
| 1071 // others the thickness is very unpredictable. | |
| 1072 // | |
| 1073 // So, instead of trying to approximate the system theme, we | |
| 1074 // instead try to compute a reasonable looking choice based on the | |
| 1075 // known color of the track and the thumb piece. This is difficult | |
| 1076 // when trying to deal both with high- and low-contrast themes, | |
| 1077 // and both with positive and inverted themes. | |
| 1078 // | |
| 1079 // The following code has been tested to look OK with all of the | |
| 1080 // default GTK themes. | |
| 1081 SkScalar min_diff = Clamp((hsv1[1] + hsv2[1]) * 1.2f, 0.28f, 0.5f); | |
| 1082 SkScalar diff = Clamp(fabs(hsv1[2] - hsv2[2]) / 2, min_diff, 0.5f); | |
| 1083 | |
| 1084 if (hsv1[2] + hsv2[2] > 1.0) | |
| 1085 diff = -diff; | |
| 1086 | |
| 1087 return SaturateAndBrighten(hsv2, -0.2f, diff); | |
| 1088 } | |
| 1089 | |
| 1090 } // namespace ui | |
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