widget/Theme.cpp

   1 /* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "Theme.h"
   7 #include "ThemeCocoa.h"
   8
   9 #include "mozilla/MathAlgorithms.h"
  10 #include "mozilla/ClearOnShutdown.h"
  11 #include "mozilla/dom/Document.h"
  12 #include "mozilla/dom/HTMLMeterElement.h"
  13 #include "mozilla/dom/HTMLProgressElement.h"
  14 #include "mozilla/gfx/Rect.h"
  15 #include "mozilla/gfx/Types.h"
  16 #include "mozilla/gfx/Filters.h"
  17 #include "mozilla/RelativeLuminanceUtils.h"
  18 #include "mozilla/StaticPrefs_widget.h"
  19 #include "mozilla/webrender/WebRenderAPI.h"
  20 #include "nsCSSColorUtils.h"
  21 #include "nsCSSRendering.h"
  22 #include "nsDeviceContext.h"
  23 #include "nsLayoutUtils.h"
  24 #include "nsRangeFrame.h"
  25 #include "PathHelpers.h"
  26 #include "ScrollbarDrawingAndroid.h"
  27 #include "ScrollbarDrawingCocoa.h"
  28 #include "ScrollbarDrawingGTK.h"
  29 #include "ScrollbarDrawingWin.h"
  30 #include "ScrollbarDrawingWin11.h"
  31
  32 #ifdef XP_WIN
  33 #  include "mozilla/WindowsVersion.h"
  34 #endif
  35
  36 using namespace mozilla;
  37 using namespace mozilla::dom;
  38 using namespace mozilla::gfx;
  39 using namespace mozilla::widget;
  40
  41 namespace {
  42
  43 static constexpr gfx::sRGBColor sColorGrey10(
  44     gfx::sRGBColor::UnusualFromARGB(0xffe9e9ed));
  45 static constexpr gfx::sRGBColor sColorGrey10Alpha50(
  46     gfx::sRGBColor::UnusualFromARGB(0x7fe9e9ed));
  47 static constexpr gfx::sRGBColor sColorGrey20(
  48     gfx::sRGBColor::UnusualFromARGB(0xffd0d0d7));
  49 static constexpr gfx::sRGBColor sColorGrey30(
  50     gfx::sRGBColor::UnusualFromARGB(0xffb1b1b9));
  51 static constexpr gfx::sRGBColor sColorGrey40(
  52     gfx::sRGBColor::UnusualFromARGB(0xff8f8f9d));
  53 static constexpr gfx::sRGBColor sColorGrey40Alpha50(
  54     gfx::sRGBColor::UnusualFromARGB(0x7f8f8f9d));
  55 static constexpr gfx::sRGBColor sColorGrey50(
  56     gfx::sRGBColor::UnusualFromARGB(0xff676774));
  57 static constexpr gfx::sRGBColor sColorGrey60(
  58     gfx::sRGBColor::UnusualFromARGB(0xff484851));
  59
  60 static constexpr gfx::sRGBColor sColorMeterGreen10(
  61     gfx::sRGBColor::UnusualFromARGB(0xff00ab60));
  62 static constexpr gfx::sRGBColor sColorMeterGreen20(
  63     gfx::sRGBColor::UnusualFromARGB(0xff056139));
  64 static constexpr gfx::sRGBColor sColorMeterYellow10(
  65     gfx::sRGBColor::UnusualFromARGB(0xffffbd4f));
  66 static constexpr gfx::sRGBColor sColorMeterYellow20(
  67     gfx::sRGBColor::UnusualFromARGB(0xffd2811e));
  68 static constexpr gfx::sRGBColor sColorMeterRed10(
  69     gfx::sRGBColor::UnusualFromARGB(0xffe22850));
  70 static constexpr gfx::sRGBColor sColorMeterRed20(
  71     gfx::sRGBColor::UnusualFromARGB(0xff810220));
  72
  73 static const CSSCoord kMinimumColorPickerHeight = 32.0f;
  74 static const CSSCoord kMinimumRangeThumbSize = 20.0f;
  75 static const CSSCoord kMinimumDropdownArrowButtonWidth = 18.0f;
  76 static const CSSCoord kMinimumSpinnerButtonWidth = 18.0f;
  77 static const CSSCoord kMinimumSpinnerButtonHeight = 9.0f;
  78 static const CSSCoord kButtonBorderWidth = 1.0f;
  79 static const CSSCoord kMenulistBorderWidth = 1.0f;
  80 static const CSSCoord kTextFieldBorderWidth = 1.0f;
  81 static const CSSCoord kRangeHeight = 6.0f;
  82 static const CSSCoord kProgressbarHeight = 6.0f;
  83 static const CSSCoord kMeterHeight = 12.0f;
  84
  85 // nsCheckboxRadioFrame takes the bottom of the content box as the baseline.
  86 // This border-width makes its baseline 2px under the bottom, which is nice.
  87 static constexpr CSSCoord kCheckboxRadioBorderWidth = 2.0f;
  88
  89 static constexpr sRGBColor sTransparent = sRGBColor::White(0.0);
  90
  91 // This pushes and pops a clip rect to the draw target.
  92 //
  93 // This is done to reduce fuzz in places where we may have antialiasing,
  94 // because skia is not clip-invariant: given different clips, it does not
  95 // guarantee the same result, even if the painted content doesn't intersect
  96 // the clips.
  97 //
  98 // This is a bit sad, overall, but...
  99 struct MOZ_RAII AutoClipRect {
 100   AutoClipRect(DrawTarget& aDt, const LayoutDeviceRect& aRect) : mDt(aDt) {
 101     mDt.PushClipRect(aRect.ToUnknownRect());
 102   }
 103
 104   ~AutoClipRect() { mDt.PopClip(); }
 105
 106  private:
 107   DrawTarget& mDt;
 108 };
 109
 110 static StaticRefPtr<Theme> gNativeInstance;
 111 static StaticRefPtr<Theme> gNonNativeInstance;
 112 static StaticRefPtr<Theme> gRDMInstance;
 113
 114 }  // namespace
 115
 116 #ifdef ANDROID
 117 already_AddRefed<Theme> do_CreateNativeThemeDoNotUseDirectly() {
 118   // Android doesn't have a native theme.
 119   return do_AddRef(new Theme(Theme::ScrollbarStyle()));
 120 }
 121 #endif
 122
 123 already_AddRefed<nsITheme> do_GetBasicNativeThemeDoNotUseDirectly() {
 124   if (MOZ_UNLIKELY(!gNonNativeInstance)) {
 125     UniquePtr<ScrollbarDrawing> scrollbarDrawing = Theme::ScrollbarStyle();
 126 #ifdef MOZ_WIDGET_COCOA
 127     gNonNativeInstance = new ThemeCocoa(std::move(scrollbarDrawing));
 128 #else
 129     gNonNativeInstance = new Theme(std::move(scrollbarDrawing));
 130 #endif
 131     ClearOnShutdown(&gNonNativeInstance);
 132   }
 133   return do_AddRef(gNonNativeInstance);
 134 }
 135
 136 already_AddRefed<nsITheme> do_GetNativeThemeDoNotUseDirectly() {
 137   if (MOZ_UNLIKELY(!gNativeInstance)) {
 138     gNativeInstance = do_CreateNativeThemeDoNotUseDirectly();
 139     ClearOnShutdown(&gNativeInstance);
 140   }
 141   return do_AddRef(gNativeInstance);
 142 }
 143
 144 already_AddRefed<nsITheme> do_GetRDMThemeDoNotUseDirectly() {
 145   if (MOZ_UNLIKELY(!gRDMInstance)) {
 146     gRDMInstance = new Theme(MakeUnique<ScrollbarDrawingAndroid>());
 147     ClearOnShutdown(&gRDMInstance);
 148   }
 149   return do_AddRef(gRDMInstance);
 150 }
 151
 152 namespace mozilla::widget {
 153
 154 NS_IMPL_ISUPPORTS_INHERITED(Theme, nsNativeTheme, nsITheme)
 155
 156 static constexpr nsLiteralCString kPrefs[] = {
 157     "widget.non-native-theme.use-theme-accent"_ns,
 158     "widget.non-native-theme.win.scrollbar.use-system-size"_ns,
 159     "widget.non-native-theme.scrollbar.size.override"_ns,
 160     "widget.non-native-theme.scrollbar.style"_ns,
 161 };
 162
 163 void Theme::Init() {
 164   for (const auto& pref : kPrefs) {
 165     Preferences::RegisterCallback(PrefChangedCallback, pref);
 166   }
 167   LookAndFeelChanged();
 168 }
 169
 170 void Theme::Shutdown() {
 171   for (const auto& pref : kPrefs) {
 172     Preferences::UnregisterCallback(PrefChangedCallback, pref);
 173   }
 174 }
 175
 176 /* static */
 177 void Theme::LookAndFeelChanged() {
 178   ThemeColors::RecomputeAccentColors();
 179   if (gNonNativeInstance) {
 180     gNonNativeInstance->SetScrollbarDrawing(ScrollbarStyle());
 181   }
 182   if (gNativeInstance) {
 183     gNativeInstance->SetScrollbarDrawing(ScrollbarStyle());
 184   }
 185 }
 186
 187 /* static */
 188 auto Theme::GetDPIRatio(nsPresContext* aPc, StyleAppearance aAppearance)
 189     -> DPIRatio {
 190   // Widgets react to zoom, except scrollbars.
 191   if (IsWidgetScrollbarPart(aAppearance)) {
 192     return ScrollbarDrawing::GetDPIRatioForScrollbarPart(aPc);
 193   }
 194   return DPIRatio(float(AppUnitsPerCSSPixel()) / aPc->AppUnitsPerDevPixel());
 195 }
 196
 197 /* static */
 198 auto Theme::GetDPIRatio(nsIFrame* aFrame, StyleAppearance aAppearance)
 199     -> DPIRatio {
 200   return GetDPIRatio(aFrame->PresContext(), aAppearance);
 201 }
 202
 203 // Checkbox and radio need to preserve aspect-ratio for compat. We also snap the
 204 // size to exact device pixels to avoid snapping disorting the circles.
 205 static LayoutDeviceRect CheckBoxRadioRect(const LayoutDeviceRect& aRect) {
 206   // Place a square rect in the center of aRect.
 207   auto size = std::trunc(std::min(aRect.width, aRect.height));
 208   auto position = aRect.Center() - LayoutDevicePoint(size * 0.5, size * 0.5);
 209   return LayoutDeviceRect(position, LayoutDeviceSize(size, size));
 210 }
 211
 212 std::pair<sRGBColor, sRGBColor> Theme::ComputeCheckboxColors(
 213     const EventStates& aState, StyleAppearance aAppearance,
 214     const Colors& aColors) {
 215   MOZ_ASSERT(aAppearance == StyleAppearance::Checkbox ||
 216              aAppearance == StyleAppearance::Radio);
 217
 218   bool isDisabled = aState.HasState(NS_EVENT_STATE_DISABLED);
 219   bool isChecked = aState.HasState(NS_EVENT_STATE_CHECKED);
 220   bool isIndeterminate = aAppearance == StyleAppearance::Checkbox &&
 221                          aState.HasState(NS_EVENT_STATE_INDETERMINATE);
 222
 223   if (isChecked || isIndeterminate) {
 224     if (isDisabled) {
 225       auto color = ComputeBorderColor(aState, aColors, OutlineCoversBorder::No);
 226       return std::make_pair(color, color);
 227     }
 228
 229     bool isActive =
 230         aState.HasAllStates(NS_EVENT_STATE_HOVER | NS_EVENT_STATE_ACTIVE);
 231     bool isHovered = aState.HasState(NS_EVENT_STATE_HOVER);
 232     const auto& color = isActive    ? aColors.Accent().GetDarker()
 233                         : isHovered ? aColors.Accent().GetDark()
 234                                     : aColors.Accent().Get();
 235     return std::make_pair(color, color);
 236   }
 237
 238   return ComputeTextfieldColors(aState, aColors, OutlineCoversBorder::No);
 239 }
 240
 241 sRGBColor Theme::ComputeCheckmarkColor(const EventStates& aState,
 242                                        const Colors& aColors) {
 243   if (aColors.HighContrast()) {
 244     return aColors.System(StyleSystemColor::Selecteditemtext);
 245   }
 246   if (aState.HasState(NS_EVENT_STATE_DISABLED)) {
 247     return sRGBColor::White(.8f);
 248   }
 249   return aColors.Accent().GetForeground();
 250 }
 251
 252 sRGBColor Theme::ComputeBorderColor(const EventStates& aState,
 253                                     const Colors& aColors,
 254                                     OutlineCoversBorder aOutlineCoversBorder) {
 255   bool isDisabled = aState.HasState(NS_EVENT_STATE_DISABLED);
 256   if (aColors.HighContrast()) {
 257     return aColors.System(isDisabled ? StyleSystemColor::Graytext
 258                                      : StyleSystemColor::Buttontext);
 259   }
 260   bool isActive =
 261       aState.HasAllStates(NS_EVENT_STATE_HOVER | NS_EVENT_STATE_ACTIVE);
 262   bool isHovered = aState.HasState(NS_EVENT_STATE_HOVER);
 263   bool isFocused = aState.HasState(NS_EVENT_STATE_FOCUSRING);
 264   if (isDisabled) {
 265     return sColorGrey40Alpha50;
 266   }
 267   if (isFocused && aOutlineCoversBorder == OutlineCoversBorder::Yes) {
 268     // If we draw the outline over the border, prevent issues where the border
 269     // shows underneath if it snaps in the wrong direction by using a
 270     // transparent border. An alternative to this is ensuring that we snap the
 271     // offset in PaintRoundedFocusRect the same was a we snap border widths, so
 272     // that negative offsets are guaranteed to cover the border.
 273     // But this looks harder to mess up.
 274     return sTransparent;
 275   }
 276   bool dark = aColors.IsDark();
 277   if (isActive) {
 278     return dark ? sColorGrey20 : sColorGrey60;
 279   }
 280   if (isHovered) {
 281     return dark ? sColorGrey30 : sColorGrey50;
 282   }
 283   return sColorGrey40;
 284 }
 285
 286 std::pair<sRGBColor, sRGBColor> Theme::ComputeButtonColors(
 287     const EventStates& aState, const Colors& aColors, nsIFrame* aFrame) {
 288   bool isActive =
 289       aState.HasAllStates(NS_EVENT_STATE_HOVER | NS_EVENT_STATE_ACTIVE);
 290   bool isDisabled = aState.HasState(NS_EVENT_STATE_DISABLED);
 291   bool isHovered = aState.HasState(NS_EVENT_STATE_HOVER);
 292
 293   nscolor backgroundColor = [&] {
 294     if (isDisabled) {
 295       return aColors.SystemNs(StyleSystemColor::MozButtondisabledface);
 296     }
 297     if (isActive) {
 298       return aColors.SystemNs(StyleSystemColor::MozButtonactiveface);
 299     }
 300     if (isHovered) {
 301       return aColors.SystemNs(StyleSystemColor::MozButtonhoverface);
 302     }
 303     return aColors.SystemNs(StyleSystemColor::Buttonface);
 304   }();
 305
 306   if (aState.HasState(NS_EVENT_STATE_AUTOFILL)) {
 307     backgroundColor = NS_ComposeColors(
 308         backgroundColor,
 309         aColors.SystemNs(StyleSystemColor::MozAutofillBackground));
 310   }
 311
 312   const sRGBColor borderColor =
 313       ComputeBorderColor(aState, aColors, OutlineCoversBorder::Yes);
 314   return std::make_pair(sRGBColor::FromABGR(backgroundColor), borderColor);
 315 }
 316
 317 std::pair<sRGBColor, sRGBColor> Theme::ComputeTextfieldColors(
 318     const EventStates& aState, const Colors& aColors,
 319     OutlineCoversBorder aOutlineCoversBorder) {
 320   nscolor backgroundColor = [&] {
 321     if (aState.HasState(NS_EVENT_STATE_DISABLED)) {
 322       return aColors.SystemNs(StyleSystemColor::MozDisabledfield);
 323     }
 324     return aColors.SystemNs(StyleSystemColor::Field);
 325   }();
 326
 327   if (aState.HasState(NS_EVENT_STATE_AUTOFILL)) {
 328     backgroundColor = NS_ComposeColors(
 329         backgroundColor,
 330         aColors.SystemNs(StyleSystemColor::MozAutofillBackground));
 331   }
 332
 333   const sRGBColor borderColor =
 334       ComputeBorderColor(aState, aColors, aOutlineCoversBorder);
 335   return std::make_pair(sRGBColor::FromABGR(backgroundColor), borderColor);
 336 }
 337
 338 std::pair<sRGBColor, sRGBColor> Theme::ComputeRangeProgressColors(
 339     const EventStates& aState, const Colors& aColors) {
 340   if (aColors.HighContrast()) {
 341     return aColors.SystemPair(StyleSystemColor::Selecteditem,
 342                               StyleSystemColor::Buttontext);
 343   }
 344
 345   bool isActive =
 346       aState.HasAllStates(NS_EVENT_STATE_HOVER | NS_EVENT_STATE_ACTIVE);
 347   bool isDisabled = aState.HasState(NS_EVENT_STATE_DISABLED);
 348   bool isHovered = aState.HasState(NS_EVENT_STATE_HOVER);
 349
 350   if (isDisabled) {
 351     return std::make_pair(sColorGrey40Alpha50, sColorGrey40Alpha50);
 352   }
 353   if (isActive || isHovered) {
 354     return std::make_pair(aColors.Accent().GetDark(),
 355                           aColors.Accent().GetDarker());
 356   }
 357   return std::make_pair(aColors.Accent().Get(), aColors.Accent().GetDark());
 358 }
 359
 360 std::pair<sRGBColor, sRGBColor> Theme::ComputeRangeTrackColors(
 361     const EventStates& aState, const Colors& aColors) {
 362   if (aColors.HighContrast()) {
 363     return aColors.SystemPair(StyleSystemColor::Window,
 364                               StyleSystemColor::Buttontext);
 365   }
 366   bool isActive =
 367       aState.HasAllStates(NS_EVENT_STATE_HOVER | NS_EVENT_STATE_ACTIVE);
 368   bool isDisabled = aState.HasState(NS_EVENT_STATE_DISABLED);
 369   bool isHovered = aState.HasState(NS_EVENT_STATE_HOVER);
 370
 371   if (isDisabled) {
 372     return std::make_pair(sColorGrey10Alpha50, sColorGrey40Alpha50);
 373   }
 374   if (isActive || isHovered) {
 375     return std::make_pair(sColorGrey20, sColorGrey50);
 376   }
 377   return std::make_pair(sColorGrey10, sColorGrey40);
 378 }
 379
 380 std::pair<sRGBColor, sRGBColor> Theme::ComputeRangeThumbColors(
 381     const EventStates& aState, const Colors& aColors) {
 382   if (aColors.HighContrast()) {
 383     return aColors.SystemPair(StyleSystemColor::Selecteditemtext,
 384                               StyleSystemColor::Selecteditem);
 385   }
 386
 387   bool isActive =
 388       aState.HasAllStates(NS_EVENT_STATE_HOVER | NS_EVENT_STATE_ACTIVE);
 389   bool isDisabled = aState.HasState(NS_EVENT_STATE_DISABLED);
 390   bool isHovered = aState.HasState(NS_EVENT_STATE_HOVER);
 391
 392   const sRGBColor& backgroundColor = [&] {
 393     if (isDisabled) {
 394       return sColorGrey40;
 395     }
 396     if (isActive) {
 397       return aColors.Accent().Get();
 398     }
 399     if (isHovered) {
 400       return sColorGrey60;
 401     }
 402     return sColorGrey50;
 403   }();
 404
 405   const sRGBColor borderColor = sRGBColor::OpaqueWhite();
 406   return std::make_pair(backgroundColor, borderColor);
 407 }
 408
 409 std::pair<sRGBColor, sRGBColor> Theme::ComputeProgressColors(
 410     const Colors& aColors) {
 411   if (aColors.HighContrast()) {
 412     return aColors.SystemPair(StyleSystemColor::Selecteditem,
 413                               StyleSystemColor::Buttontext);
 414   }
 415   return std::make_pair(aColors.Accent().Get(), aColors.Accent().GetDark());
 416 }
 417
 418 std::pair<sRGBColor, sRGBColor> Theme::ComputeProgressTrackColors(
 419     const Colors& aColors) {
 420   if (aColors.HighContrast()) {
 421     return aColors.SystemPair(StyleSystemColor::Buttonface,
 422                               StyleSystemColor::Buttontext);
 423   }
 424   return std::make_pair(sColorGrey10, sColorGrey40);
 425 }
 426
 427 std::pair<sRGBColor, sRGBColor> Theme::ComputeMeterchunkColors(
 428     const EventStates& aMeterState, const Colors& aColors) {
 429   if (aColors.HighContrast()) {
 430     return ComputeProgressColors(aColors);
 431   }
 432   sRGBColor borderColor = sColorMeterGreen20;
 433   sRGBColor chunkColor = sColorMeterGreen10;
 434
 435   if (aMeterState.HasState(NS_EVENT_STATE_SUB_OPTIMUM)) {
 436     borderColor = sColorMeterYellow20;
 437     chunkColor = sColorMeterYellow10;
 438   } else if (aMeterState.HasState(NS_EVENT_STATE_SUB_SUB_OPTIMUM)) {
 439     borderColor = sColorMeterRed20;
 440     chunkColor = sColorMeterRed10;
 441   }
 442
 443   return std::make_pair(chunkColor, borderColor);
 444 }
 445
 446 std::array<sRGBColor, 3> Theme::ComputeFocusRectColors(const Colors& aColors) {
 447   if (aColors.HighContrast()) {
 448     return {aColors.System(StyleSystemColor::Selecteditem),
 449             aColors.System(StyleSystemColor::Buttontext),
 450             aColors.System(StyleSystemColor::Window)};
 451   }
 452   const auto& accent = aColors.Accent();
 453   const sRGBColor middle =
 454       aColors.IsDark() ? sRGBColor::Black(.3f) : sRGBColor::White(.3f);
 455   return {accent.Get(), middle, accent.GetLight()};
 456 }
 457
 458 static const CSSCoord kInnerFocusOutlineWidth = 2.0f;
 459
 460 template <typename PaintBackendData>
 461 void Theme::PaintRoundedFocusRect(PaintBackendData& aBackendData,
 462                                   const LayoutDeviceRect& aRect,
 463                                   const Colors& aColors, DPIRatio aDpiRatio,
 464                                   CSSCoord aRadius, CSSCoord aOffset) {
 465   // NOTE(emilio): If the widths or offsets here change, make sure to tweak
 466   // the GetWidgetOverflow path for FocusOutline.
 467   auto [innerColor, middleColor, outerColor] = ComputeFocusRectColors(aColors);
 468
 469   LayoutDeviceRect focusRect(aRect);
 470
 471   // The focus rect is painted outside of the border area (aRect), see:
 472   //
 473   //   data:text/html,<div style="border: 1px solid; outline: 2px solid
 474   //   red">Foobar</div>
 475   //
 476   // But some controls might provide a negative offset to cover the border, if
 477   // necessary.
 478   CSSCoord strokeWidth = kInnerFocusOutlineWidth;
 479   auto strokeWidthDevPx =
 480       LayoutDeviceCoord(ThemeDrawing::SnapBorderWidth(strokeWidth, aDpiRatio));
 481   CSSCoord strokeRadius = aRadius;
 482   focusRect.Inflate(aOffset * aDpiRatio + strokeWidthDevPx);
 483
 484   ThemeDrawing::PaintRoundedRectWithRadius(
 485       aBackendData, focusRect, sTransparent, innerColor, strokeWidth,
 486       strokeRadius, aDpiRatio);
 487
 488   strokeWidth = CSSCoord(1.0f);
 489   strokeWidthDevPx =
 490       LayoutDeviceCoord(ThemeDrawing::SnapBorderWidth(strokeWidth, aDpiRatio));
 491   strokeRadius += strokeWidth;
 492   focusRect.Inflate(strokeWidthDevPx);
 493
 494   ThemeDrawing::PaintRoundedRectWithRadius(
 495       aBackendData, focusRect, sTransparent, middleColor, strokeWidth,
 496       strokeRadius, aDpiRatio);
 497
 498   strokeWidth = CSSCoord(2.0f);
 499   strokeWidthDevPx =
 500       LayoutDeviceCoord(ThemeDrawing::SnapBorderWidth(strokeWidth, aDpiRatio));
 501   strokeRadius += strokeWidth;
 502   focusRect.Inflate(strokeWidthDevPx);
 503
 504   ThemeDrawing::PaintRoundedRectWithRadius(
 505       aBackendData, focusRect, sTransparent, outerColor, strokeWidth,
 506       strokeRadius, aDpiRatio);
 507 }
 508
 509 void Theme::PaintCheckboxControl(DrawTarget& aDrawTarget,
 510                                  const LayoutDeviceRect& aRect,
 511                                  const EventStates& aState,
 512                                  const Colors& aColors, DPIRatio aDpiRatio) {
 513   auto [backgroundColor, borderColor] =
 514       ComputeCheckboxColors(aState, StyleAppearance::Checkbox, aColors);
 515   {
 516     const CSSCoord radius = 2.0f;
 517     CSSCoord borderWidth = kCheckboxRadioBorderWidth;
 518     if (backgroundColor == borderColor) {
 519       borderWidth = 0.0f;
 520     }
 521     ThemeDrawing::PaintRoundedRectWithRadius(aDrawTarget, aRect,
 522                                              backgroundColor, borderColor,
 523                                              borderWidth, radius, aDpiRatio);
 524   }
 525
 526   if (aState.HasState(NS_EVENT_STATE_INDETERMINATE)) {
 527     PaintIndeterminateMark(aDrawTarget, aRect, aState, aColors);
 528   } else if (aState.HasState(NS_EVENT_STATE_CHECKED)) {
 529     PaintCheckMark(aDrawTarget, aRect, aState, aColors);
 530   }
 531
 532   if (aState.HasState(NS_EVENT_STATE_FOCUSRING)) {
 533     PaintRoundedFocusRect(aDrawTarget, aRect, aColors, aDpiRatio, 5.0f, 1.0f);
 534   }
 535 }
 536
 537 constexpr CSSCoord kCheckboxRadioContentBoxSize = 10.0f;
 538 constexpr CSSCoord kCheckboxRadioBorderBoxSize =
 539     kCheckboxRadioContentBoxSize + kCheckboxRadioBorderWidth * 2.0f;
 540
 541 void Theme::PaintCheckMark(DrawTarget& aDrawTarget,
 542                            const LayoutDeviceRect& aRect,
 543                            const EventStates& aState, const Colors& aColors) {
 544   // Points come from the coordinates on a 14X14 (kCheckboxRadioBorderBoxSize)
 545   // unit box centered at 0,0
 546   const float checkPolygonX[] = {-4.5f, -1.5f, -0.5f, 5.0f, 4.75f,
 547                                  3.5f,  -0.5f, -1.5f, -3.5f};
 548   const float checkPolygonY[] = {0.5f,  4.0f, 4.0f,  -2.5f, -4.0f,
 549                                  -4.0f, 1.0f, 1.25f, -1.0f};
 550   const int32_t checkNumPoints = sizeof(checkPolygonX) / sizeof(float);
 551   const float scale =
 552       ThemeDrawing::ScaleToFillRect(aRect, kCheckboxRadioBorderBoxSize);
 553   auto center = aRect.Center().ToUnknownPoint();
 554
 555   RefPtr<PathBuilder> builder = aDrawTarget.CreatePathBuilder();
 556   Point p = center + Point(checkPolygonX[0] * scale, checkPolygonY[0] * scale);
 557   builder->MoveTo(p);
 558   for (int32_t i = 1; i < checkNumPoints; i++) {
 559     p = center + Point(checkPolygonX[i] * scale, checkPolygonY[i] * scale);
 560     builder->LineTo(p);
 561   }
 562   RefPtr<Path> path = builder->Finish();
 563
 564   sRGBColor fillColor = ComputeCheckmarkColor(aState, aColors);
 565   aDrawTarget.Fill(path, ColorPattern(ToDeviceColor(fillColor)));
 566 }
 567
 568 void Theme::PaintIndeterminateMark(DrawTarget& aDrawTarget,
 569                                    const LayoutDeviceRect& aRect,
 570                                    const EventStates& aState,
 571                                    const Colors& aColors) {
 572   const CSSCoord borderWidth = 2.0f;
 573   const float scale =
 574       ThemeDrawing::ScaleToFillRect(aRect, kCheckboxRadioBorderBoxSize);
 575
 576   Rect rect = aRect.ToUnknownRect();
 577   rect.y += (rect.height / 2) - (borderWidth * scale / 2);
 578   rect.height = borderWidth * scale;
 579   rect.x += (borderWidth * scale) + (borderWidth * scale / 8);
 580   rect.width -= ((borderWidth * scale) + (borderWidth * scale / 8)) * 2;
 581
 582   sRGBColor fillColor = ComputeCheckmarkColor(aState, aColors);
 583   aDrawTarget.FillRect(rect, ColorPattern(ToDeviceColor(fillColor)));
 584 }
 585
 586 template <typename PaintBackendData>
 587 void Theme::PaintStrokedCircle(PaintBackendData& aPaintData,
 588                                const LayoutDeviceRect& aRect,
 589                                const sRGBColor& aBackgroundColor,
 590                                const sRGBColor& aBorderColor,
 591                                const CSSCoord aBorderWidth,
 592                                DPIRatio aDpiRatio) {
 593   auto radius = LayoutDeviceCoord(aRect.Size().width) / aDpiRatio;
 594   ThemeDrawing::PaintRoundedRectWithRadius(aPaintData, aRect, aBackgroundColor,
 595                                            aBorderColor, aBorderWidth, radius,
 596                                            aDpiRatio);
 597 }
 598
 599 void Theme::PaintCircleShadow(WebRenderBackendData& aWrData,
 600                               const LayoutDeviceRect& aBoxRect,
 601                               const LayoutDeviceRect& aClipRect,
 602                               float aShadowAlpha, const CSSPoint& aShadowOffset,
 603                               CSSCoord aShadowBlurStdDev, DPIRatio aDpiRatio) {
 604   const bool kBackfaceIsVisible = true;
 605   const LayoutDeviceCoord stdDev = aShadowBlurStdDev * aDpiRatio;
 606   const LayoutDevicePoint shadowOffset = aShadowOffset * aDpiRatio;
 607   const IntSize inflation =
 608       gfxAlphaBoxBlur::CalculateBlurRadius(gfxPoint(stdDev, stdDev));
 609   LayoutDeviceRect shadowRect = aBoxRect;
 610   shadowRect.MoveBy(shadowOffset);
 611   shadowRect.Inflate(inflation.width, inflation.height);
 612   const auto boxRect = wr::ToLayoutRect(aBoxRect);
 613   aWrData.mBuilder.PushBoxShadow(
 614       wr::ToLayoutRect(shadowRect), wr::ToLayoutRect(aClipRect),
 615       kBackfaceIsVisible, boxRect,
 616       wr::ToLayoutVector2D(aShadowOffset * aDpiRatio),
 617       wr::ToColorF(DeviceColor(0.0f, 0.0f, 0.0f, aShadowAlpha)), stdDev,
 618       /* aSpread = */ 0.0f,
 619       wr::ToBorderRadius(gfx::RectCornerRadii(aBoxRect.Size().width)),
 620       wr::BoxShadowClipMode::Outset);
 621 }
 622
 623 void Theme::PaintCircleShadow(DrawTarget& aDrawTarget,
 624                               const LayoutDeviceRect& aBoxRect,
 625                               const LayoutDeviceRect& aClipRect,
 626                               float aShadowAlpha, const CSSPoint& aShadowOffset,
 627                               CSSCoord aShadowBlurStdDev, DPIRatio aDpiRatio) {
 628   Float stdDev = aShadowBlurStdDev * aDpiRatio;
 629   Point offset = (aShadowOffset * aDpiRatio).ToUnknownPoint();
 630
 631   RefPtr<FilterNode> blurFilter =
 632       aDrawTarget.CreateFilter(FilterType::GAUSSIAN_BLUR);
 633   if (!blurFilter) {
 634     return;
 635   }
 636
 637   blurFilter->SetAttribute(ATT_GAUSSIAN_BLUR_STD_DEVIATION, stdDev);
 638
 639   IntSize inflation =
 640       gfxAlphaBoxBlur::CalculateBlurRadius(gfxPoint(stdDev, stdDev));
 641   Rect inflatedRect = aBoxRect.ToUnknownRect();
 642   inflatedRect.Inflate(inflation.width, inflation.height);
 643   Rect sourceRectInFilterSpace =
 644       inflatedRect - aBoxRect.TopLeft().ToUnknownPoint();
 645   Point destinationPointOfSourceRect = inflatedRect.TopLeft() + offset;
 646
 647   IntSize dtSize = RoundedToInt(aBoxRect.Size().ToUnknownSize());
 648   RefPtr<DrawTarget> ellipseDT = aDrawTarget.CreateSimilarDrawTargetForFilter(
 649       dtSize, SurfaceFormat::A8, blurFilter, blurFilter,
 650       sourceRectInFilterSpace, destinationPointOfSourceRect);
 651   if (!ellipseDT) {
 652     return;
 653   }
 654
 655   AutoClipRect clipRect(aDrawTarget, aClipRect);
 656
 657   RefPtr<Path> ellipse = MakePathForEllipse(
 658       *ellipseDT, (aBoxRect - aBoxRect.TopLeft()).Center().ToUnknownPoint(),
 659       aBoxRect.Size().ToUnknownSize());
 660   ellipseDT->Fill(ellipse,
 661                   ColorPattern(DeviceColor(0.0f, 0.0f, 0.0f, aShadowAlpha)));
 662   RefPtr<SourceSurface> ellipseSurface = ellipseDT->Snapshot();
 663
 664   blurFilter->SetInput(IN_GAUSSIAN_BLUR_IN, ellipseSurface);
 665   aDrawTarget.DrawFilter(blurFilter, sourceRectInFilterSpace,
 666                          destinationPointOfSourceRect);
 667 }
 668
 669 template <typename PaintBackendData>
 670 void Theme::PaintRadioControl(PaintBackendData& aPaintData,
 671                               const LayoutDeviceRect& aRect,
 672                               const EventStates& aState, const Colors& aColors,
 673                               DPIRatio aDpiRatio) {
 674   auto [backgroundColor, borderColor] =
 675       ComputeCheckboxColors(aState, StyleAppearance::Radio, aColors);
 676   {
 677     CSSCoord borderWidth = kCheckboxRadioBorderWidth;
 678     if (backgroundColor == borderColor) {
 679       borderWidth = 0.0f;
 680     }
 681     PaintStrokedCircle(aPaintData, aRect, backgroundColor, borderColor,
 682                        borderWidth, aDpiRatio);
 683   }
 684
 685   if (aState.HasState(NS_EVENT_STATE_CHECKED)) {
 686     LayoutDeviceRect rect(aRect);
 687     auto width = LayoutDeviceCoord(
 688         ThemeDrawing::SnapBorderWidth(kCheckboxRadioBorderWidth, aDpiRatio));
 689     rect.Deflate(width);
 690
 691     auto checkColor = ComputeCheckmarkColor(aState, aColors);
 692     PaintStrokedCircle(aPaintData, rect, backgroundColor, checkColor,
 693                        kCheckboxRadioBorderWidth, aDpiRatio);
 694   }
 695
 696   if (aState.HasState(NS_EVENT_STATE_FOCUSRING)) {
 697     PaintRoundedFocusRect(aPaintData, aRect, aColors, aDpiRatio, 5.0f, 1.0f);
 698   }
 699 }
 700
 701 template <typename PaintBackendData>
 702 void Theme::PaintTextField(PaintBackendData& aPaintData,
 703                            const LayoutDeviceRect& aRect,
 704                            const EventStates& aState, const Colors& aColors,
 705                            DPIRatio aDpiRatio) {
 706   auto [backgroundColor, borderColor] =
 707       ComputeTextfieldColors(aState, aColors, OutlineCoversBorder::Yes);
 708
 709   const CSSCoord radius = 2.0f;
 710
 711   ThemeDrawing::PaintRoundedRectWithRadius(aPaintData, aRect, backgroundColor,
 712                                            borderColor, kTextFieldBorderWidth,
 713                                            radius, aDpiRatio);
 714
 715   if (aState.HasState(NS_EVENT_STATE_FOCUSRING)) {
 716     PaintRoundedFocusRect(aPaintData, aRect, aColors, aDpiRatio,
 717                           radius + kTextFieldBorderWidth,
 718                           -kTextFieldBorderWidth);
 719   }
 720 }
 721
 722 template <typename PaintBackendData>
 723 void Theme::PaintListbox(PaintBackendData& aPaintData,
 724                          const LayoutDeviceRect& aRect,
 725                          const EventStates& aState, const Colors& aColors,
 726                          DPIRatio aDpiRatio) {
 727   const CSSCoord radius = 2.0f;
 728   auto [backgroundColor, borderColor] =
 729       ComputeTextfieldColors(aState, aColors, OutlineCoversBorder::Yes);
 730
 731   ThemeDrawing::PaintRoundedRectWithRadius(aPaintData, aRect, backgroundColor,
 732                                            borderColor, kMenulistBorderWidth,
 733                                            radius, aDpiRatio);
 734
 735   if (aState.HasState(NS_EVENT_STATE_FOCUSRING)) {
 736     PaintRoundedFocusRect(aPaintData, aRect, aColors, aDpiRatio,
 737                           radius + kMenulistBorderWidth, -kMenulistBorderWidth);
 738   }
 739 }
 740
 741 template <typename PaintBackendData>
 742 void Theme::PaintMenulist(PaintBackendData& aDrawTarget,
 743                           const LayoutDeviceRect& aRect,
 744                           const EventStates& aState, const Colors& aColors,
 745                           DPIRatio aDpiRatio) {
 746   const CSSCoord radius = 4.0f;
 747   auto [backgroundColor, borderColor] = ComputeButtonColors(aState, aColors);
 748
 749   ThemeDrawing::PaintRoundedRectWithRadius(aDrawTarget, aRect, backgroundColor,
 750                                            borderColor, kMenulistBorderWidth,
 751                                            radius, aDpiRatio);
 752
 753   if (aState.HasState(NS_EVENT_STATE_FOCUSRING)) {
 754     PaintRoundedFocusRect(aDrawTarget, aRect, aColors, aDpiRatio,
 755                           radius + kMenulistBorderWidth, -kMenulistBorderWidth);
 756   }
 757 }
 758
 759 void Theme::PaintMenulistArrowButton(nsIFrame* aFrame, DrawTarget& aDrawTarget,
 760                                      const LayoutDeviceRect& aRect,
 761                                      const EventStates& aState) {
 762   const float kPolygonX[] = {-4.0f, -0.5f, 0.5f, 4.0f,  4.0f,
 763                              3.0f,  0.0f,  0.0f, -3.0f, -4.0f};
 764   const float kPolygonY[] = {-1,    3.0f, 3.0f, -1.0f, -2.0f,
 765                              -2.0f, 1.5f, 1.5f, -2.0f, -2.0f};
 766
 767   const float kPolygonSize = kMinimumDropdownArrowButtonWidth;
 768
 769   const auto arrowColor = sRGBColor::FromABGR(
 770       nsLayoutUtils::GetColor(aFrame, &nsStyleText::mWebkitTextFillColor));
 771   ThemeDrawing::PaintArrow(aDrawTarget, aRect, kPolygonX, kPolygonY,
 772                            kPolygonSize, ArrayLength(kPolygonX), arrowColor);
 773 }
 774
 775 void Theme::PaintSpinnerButton(nsIFrame* aFrame, DrawTarget& aDrawTarget,
 776                                const LayoutDeviceRect& aRect,
 777                                const EventStates& aState,
 778                                StyleAppearance aAppearance,
 779                                const Colors& aColors, DPIRatio aDpiRatio) {
 780   auto [backgroundColor, borderColor] = ComputeButtonColors(aState, aColors);
 781
 782   aDrawTarget.FillRect(aRect.ToUnknownRect(),
 783                        ColorPattern(ToDeviceColor(backgroundColor)));
 784
 785   const float kPolygonX[] = {-3.5f, -0.5f, 0.5f, 3.5f,  3.5f,
 786                              2.5f,  0.0f,  0.0f, -2.5f, -3.5f};
 787   float polygonY[] = {-1.5f, 1.5f, 1.5f, -1.5f, -2.5f,
 788                       -2.5f, 0.0f, 0.0f, -2.5f, -2.5f};
 789
 790   const float kPolygonSize = kMinimumSpinnerButtonHeight;
 791   if (aAppearance == StyleAppearance::SpinnerUpbutton) {
 792     for (auto& coord : polygonY) {
 793       coord = -coord;
 794     }
 795   }
 796
 797   ThemeDrawing::PaintArrow(aDrawTarget, aRect, kPolygonX, polygonY,
 798                            kPolygonSize, ArrayLength(kPolygonX), borderColor);
 799 }
 800
 801 template <typename PaintBackendData>
 802 void Theme::PaintRange(nsIFrame* aFrame, PaintBackendData& aPaintData,
 803                        const LayoutDeviceRect& aRect, const EventStates& aState,
 804                        const Colors& aColors, DPIRatio aDpiRatio,
 805                        bool aHorizontal) {
 806   nsRangeFrame* rangeFrame = do_QueryFrame(aFrame);
 807   if (!rangeFrame) {
 808     return;
 809   }
 810
 811   double progress = rangeFrame->GetValueAsFractionOfRange();
 812   auto rect = aRect;
 813   LayoutDeviceRect thumbRect(0, 0, kMinimumRangeThumbSize * aDpiRatio,
 814                              kMinimumRangeThumbSize * aDpiRatio);
 815   LayoutDeviceRect progressClipRect(aRect);
 816   LayoutDeviceRect trackClipRect(aRect);
 817   const LayoutDeviceCoord verticalSize = kRangeHeight * aDpiRatio;
 818   if (aHorizontal) {
 819     rect.height = verticalSize;
 820     rect.y = aRect.y + (aRect.height - rect.height) / 2;
 821     thumbRect.y = aRect.y + (aRect.height - thumbRect.height) / 2;
 822
 823     if (IsFrameRTL(aFrame)) {
 824       thumbRect.x =
 825           aRect.x + (aRect.width - thumbRect.width) * (1.0 - progress);
 826       float midPoint = thumbRect.Center().X();
 827       trackClipRect.SetBoxX(aRect.X(), midPoint);
 828       progressClipRect.SetBoxX(midPoint, aRect.XMost());
 829     } else {
 830       thumbRect.x = aRect.x + (aRect.width - thumbRect.width) * progress;
 831       float midPoint = thumbRect.Center().X();
 832       progressClipRect.SetBoxX(aRect.X(), midPoint);
 833       trackClipRect.SetBoxX(midPoint, aRect.XMost());
 834     }
 835   } else {
 836     rect.width = verticalSize;
 837     rect.x = aRect.x + (aRect.width - rect.width) / 2;
 838     thumbRect.x = aRect.x + (aRect.width - thumbRect.width) / 2;
 839
 840     thumbRect.y =
 841         aRect.y + (aRect.height - thumbRect.height) * (1.0 - progress);
 842     float midPoint = thumbRect.Center().Y();
 843     trackClipRect.SetBoxY(aRect.Y(), midPoint);
 844     progressClipRect.SetBoxY(midPoint, aRect.YMost());
 845   }
 846
 847   const CSSCoord borderWidth = 1.0f;
 848   const CSSCoord radius = 3.0f;
 849
 850   auto [progressColor, progressBorderColor] =
 851       ComputeRangeProgressColors(aState, aColors);
 852   auto [trackColor, trackBorderColor] =
 853       ComputeRangeTrackColors(aState, aColors);
 854
 855   ThemeDrawing::PaintRoundedRectWithRadius(aPaintData, rect, progressClipRect,
 856                                            progressColor, progressBorderColor,
 857                                            borderWidth, radius, aDpiRatio);
 858
 859   ThemeDrawing::PaintRoundedRectWithRadius(aPaintData, rect, trackClipRect,
 860                                            trackColor, trackBorderColor,
 861                                            borderWidth, radius, aDpiRatio);
 862
 863   if (!aState.HasState(NS_EVENT_STATE_DISABLED)) {
 864     // Ensure the shadow doesn't expand outside of our overflow rect declared in
 865     // GetWidgetOverflow().
 866     auto overflowRect = aRect;
 867     overflowRect.Inflate(CSSCoord(6.0f) * aDpiRatio);
 868     // Thumb shadow
 869     PaintCircleShadow(aPaintData, thumbRect, overflowRect, 0.3f,
 870                       CSSPoint(0.0f, 2.0f), 2.0f, aDpiRatio);
 871   }
 872
 873   // Draw the thumb on top.
 874   const CSSCoord thumbBorderWidth = 2.0f;
 875   auto [thumbColor, thumbBorderColor] =
 876       ComputeRangeThumbColors(aState, aColors);
 877
 878   PaintStrokedCircle(aPaintData, thumbRect, thumbColor, thumbBorderColor,
 879                      thumbBorderWidth, aDpiRatio);
 880
 881   if (aState.HasState(NS_EVENT_STATE_FOCUSRING)) {
 882     PaintRoundedFocusRect(aPaintData, aRect, aColors, aDpiRatio, radius, 1.0f);
 883   }
 884 }
 885
 886 template <typename PaintBackendData>
 887 void Theme::PaintProgress(nsIFrame* aFrame, PaintBackendData& aPaintData,
 888                           const LayoutDeviceRect& aRect,
 889                           const EventStates& aState, const Colors& aColors,
 890                           DPIRatio aDpiRatio, bool aIsMeter) {
 891   const CSSCoord borderWidth = 1.0f;
 892   const CSSCoord radius = aIsMeter ? 6.0f : 3.0f;
 893
 894   LayoutDeviceRect rect(aRect);
 895   const LayoutDeviceCoord thickness =
 896       (aIsMeter ? kMeterHeight : kProgressbarHeight) * aDpiRatio;
 897
 898   const bool isHorizontal = !nsNativeTheme::IsVerticalProgress(aFrame);
 899   if (isHorizontal) {
 900     // Center it vertically.
 901     rect.y += (rect.height - thickness) / 2;
 902     rect.height = thickness;
 903   } else {
 904     // Center it horizontally.
 905     rect.x += (rect.width - thickness) / 2;
 906     rect.width = thickness;
 907   }
 908
 909   {
 910     // Paint the track, unclipped.
 911     auto [backgroundColor, borderColor] = ComputeProgressTrackColors(aColors);
 912     ThemeDrawing::PaintRoundedRectWithRadius(aPaintData, rect, rect,
 913                                              backgroundColor, borderColor,
 914                                              borderWidth, radius, aDpiRatio);
 915   }
 916
 917   // Now paint the chunk, clipped as needed.
 918   LayoutDeviceRect clipRect = rect;
 919   if (aState.HasState(NS_EVENT_STATE_INDETERMINATE)) {
 920     // For indeterminate progress, we paint an animated chunk of 1/3 of the
 921     // progress size.
 922     //
 923     // Animation speed and math borrowed from GTK.
 924     const LayoutDeviceCoord size = isHorizontal ? rect.width : rect.height;
 925     const LayoutDeviceCoord barSize = size * 0.3333f;
 926     const LayoutDeviceCoord travel = 2.0f * (size - barSize);
 927
 928     // Period equals to travel / pixelsPerMillisecond where pixelsPerMillisecond
 929     // equals progressSize / 1000.0.  This is equivalent to 1600.
 930     const unsigned kPeriod = 1600;
 931
 932     const int t = PR_IntervalToMilliseconds(PR_IntervalNow()) % kPeriod;
 933     const LayoutDeviceCoord dx = travel * float(t) / float(kPeriod);
 934     if (isHorizontal) {
 935       rect.width = barSize;
 936       rect.x += (dx < travel * .5f) ? dx : travel - dx;
 937     } else {
 938       rect.height = barSize;
 939       rect.y += (dx < travel * .5f) ? dx : travel - dx;
 940     }
 941     clipRect = rect;
 942     // Queue the next frame if needed.
 943     if (!QueueAnimatedContentForRefresh(aFrame->GetContent(), 60)) {
 944       NS_WARNING("Couldn't refresh indeterminate <progress>");
 945     }
 946   } else {
 947     // This is the progress chunk, clip it to the right amount.
 948     double position = [&] {
 949       if (aIsMeter) {
 950         auto* meter = dom::HTMLMeterElement::FromNode(aFrame->GetContent());
 951         if (!meter) {
 952           return 0.0;
 953         }
 954         return meter->Position();
 955       }
 956       auto* progress = dom::HTMLProgressElement::FromNode(aFrame->GetContent());
 957       if (!progress) {
 958         return 0.0;
 959       }
 960       return progress->Position();
 961     }();
 962     if (isHorizontal) {
 963       double clipWidth = rect.width * position;
 964       clipRect.width = clipWidth;
 965       if (IsFrameRTL(aFrame)) {
 966         clipRect.x += rect.width - clipWidth;
 967       }
 968     } else {
 969       double clipHeight = rect.height * position;
 970       clipRect.height = clipHeight;
 971       clipRect.y += rect.height - clipHeight;
 972     }
 973   }
 974
 975   auto [backgroundColor, borderColor] =
 976       aIsMeter ? ComputeMeterchunkColors(aState, aColors)
 977                : ComputeProgressColors(aColors);
 978   ThemeDrawing::PaintRoundedRectWithRadius(aPaintData, rect, clipRect,
 979                                            backgroundColor, borderColor,
 980                                            borderWidth, radius, aDpiRatio);
 981 }
 982
 983 template <typename PaintBackendData>
 984 void Theme::PaintButton(nsIFrame* aFrame, PaintBackendData& aPaintData,
 985                         const LayoutDeviceRect& aRect,
 986                         const EventStates& aState, const Colors& aColors,
 987                         DPIRatio aDpiRatio) {
 988   const CSSCoord radius = 4.0f;
 989   auto [backgroundColor, borderColor] =
 990       ComputeButtonColors(aState, aColors, aFrame);
 991
 992   ThemeDrawing::PaintRoundedRectWithRadius(aPaintData, aRect, backgroundColor,
 993                                            borderColor, kButtonBorderWidth,
 994                                            radius, aDpiRatio);
 995
 996   if (aState.HasState(NS_EVENT_STATE_FOCUSRING)) {
 997     PaintRoundedFocusRect(aPaintData, aRect, aColors, aDpiRatio,
 998                           radius + kButtonBorderWidth, -kButtonBorderWidth);
 999   }
1000 }
1001
1002 NS_IMETHODIMP
1003 Theme::DrawWidgetBackground(gfxContext* aContext, nsIFrame* aFrame,
1004                             StyleAppearance aAppearance, const nsRect& aRect,
1005                             const nsRect& /* aDirtyRect */,
1006                             DrawOverflow aDrawOverflow) {
1007   if (!DoDrawWidgetBackground(*aContext->GetDrawTarget(), aFrame, aAppearance,
1008                               aRect, aDrawOverflow)) {
1009     return NS_ERROR_NOT_IMPLEMENTED;
1010   }
1011   return NS_OK;
1012 }
1013
1014 bool Theme::CreateWebRenderCommandsForWidget(
1015     mozilla::wr::DisplayListBuilder& aBuilder,
1016     mozilla::wr::IpcResourceUpdateQueue& aResources,
1017     const mozilla::layers::StackingContextHelper& aSc,
1018     mozilla::layers::RenderRootStateManager* aManager, nsIFrame* aFrame,
1019     StyleAppearance aAppearance, const nsRect& aRect) {
1020   if (!StaticPrefs::widget_non_native_theme_webrender()) {
1021     return false;
1022   }
1023   WebRenderBackendData data{aBuilder, aResources, aSc, aManager};
1024   return DoDrawWidgetBackground(data, aFrame, aAppearance, aRect,
1025                                 DrawOverflow::Yes);
1026 }
1027
1028 static LayoutDeviceRect ToSnappedRect(const nsRect& aRect,
1029                                       nscoord aTwipsPerPixel, DrawTarget& aDt) {
1030   return LayoutDeviceRect::FromUnknownRect(
1031       NSRectToSnappedRect(aRect, aTwipsPerPixel, aDt));
1032 }
1033
1034 static LayoutDeviceRect ToSnappedRect(const nsRect& aRect,
1035                                       nscoord aTwipsPerPixel,
1036                                       WebRenderBackendData& aDt) {
1037   // TODO: Do we need to do any more snapping here?
1038   return LayoutDeviceRect::FromAppUnits(aRect, aTwipsPerPixel);
1039 }
1040
1041 template <typename PaintBackendData>
1042 bool Theme::DoDrawWidgetBackground(PaintBackendData& aPaintData,
1043                                    nsIFrame* aFrame,
1044                                    StyleAppearance aAppearance,
1045                                    const nsRect& aRect,
1046                                    DrawOverflow aDrawOverflow) {
1047   static_assert(std::is_same_v<PaintBackendData, DrawTarget> ||
1048                 std::is_same_v<PaintBackendData, WebRenderBackendData>);
1049
1050   const nsPresContext* pc = aFrame->PresContext();
1051   const nscoord twipsPerPixel = pc->AppUnitsPerDevPixel();
1052   const auto devPxRect = ToSnappedRect(aRect, twipsPerPixel, aPaintData);
1053
1054   const EventStates docState = pc->Document()->GetDocumentState();
1055   EventStates eventState = GetContentState(aFrame, aAppearance);
1056   if (aAppearance == StyleAppearance::MozMenulistArrowButton) {
1057     bool isHTML = IsHTMLContent(aFrame);
1058     nsIFrame* parentFrame = aFrame->GetParent();
1059     bool isMenulist = !isHTML && parentFrame->IsMenuFrame();
1060     // HTML select and XUL menulist dropdown buttons get state from the
1061     // parent.
1062     if (isHTML || isMenulist) {
1063       aFrame = parentFrame;
1064       eventState = GetContentState(parentFrame, aAppearance);
1065     }
1066   }
1067
1068   // Don't paint the outline if we're asked not to draw overflow, or if the
1069   // author has specified another kind of outline on focus.
1070   if (aDrawOverflow == DrawOverflow::No ||
1071       !aFrame->StyleOutline()->mOutlineStyle.IsAuto()) {
1072     eventState &= ~NS_EVENT_STATE_FOCUSRING;
1073   }
1074
1075   // Hack to avoid skia fuzziness: Add a dummy clip if the widget doesn't
1076   // overflow devPxRect.
1077   Maybe<AutoClipRect> maybeClipRect;
1078   if constexpr (std::is_same_v<PaintBackendData, DrawTarget>) {
1079     if (aAppearance != StyleAppearance::FocusOutline &&
1080         aAppearance != StyleAppearance::Range &&
1081         !eventState.HasState(NS_EVENT_STATE_FOCUSRING)) {
1082       maybeClipRect.emplace(aPaintData, devPxRect);
1083     }
1084   }
1085
1086   const Colors colors(aFrame);
1087   DPIRatio dpiRatio = GetDPIRatio(aFrame, aAppearance);
1088
1089   switch (aAppearance) {
1090     case StyleAppearance::Radio: {
1091       auto rect = CheckBoxRadioRect(devPxRect);
1092       PaintRadioControl(aPaintData, rect, eventState, colors, dpiRatio);
1093       break;
1094     }
1095     case StyleAppearance::Checkbox: {
1096       if constexpr (std::is_same_v<PaintBackendData, WebRenderBackendData>) {
1097         // TODO: Need to figure out how to best draw this using WR.
1098         return false;
1099       } else {
1100         auto rect = CheckBoxRadioRect(devPxRect);
1101         PaintCheckboxControl(aPaintData, rect, eventState, colors, dpiRatio);
1102       }
1103       break;
1104     }
1105     case StyleAppearance::Textarea:
1106     case StyleAppearance::Textfield:
1107     case StyleAppearance::NumberInput:
1108       PaintTextField(aPaintData, devPxRect, eventState, colors, dpiRatio);
1109       break;
1110     case StyleAppearance::Listbox:
1111       PaintListbox(aPaintData, devPxRect, eventState, colors, dpiRatio);
1112       break;
1113     case StyleAppearance::MenulistButton:
1114     case StyleAppearance::Menulist:
1115       PaintMenulist(aPaintData, devPxRect, eventState, colors, dpiRatio);
1116       break;
1117     case StyleAppearance::MozMenulistArrowButton:
1118       if constexpr (std::is_same_v<PaintBackendData, WebRenderBackendData>) {
1119         // TODO: Need to figure out how to best draw this using WR.
1120         return false;
1121       } else {
1122         PaintMenulistArrowButton(aFrame, aPaintData, devPxRect, eventState);
1123       }
1124       break;
1125     case StyleAppearance::SpinnerUpbutton:
1126     case StyleAppearance::SpinnerDownbutton:
1127       if constexpr (std::is_same_v<PaintBackendData, WebRenderBackendData>) {
1128         // TODO: Need to figure out how to best draw this using WR.
1129         return false;
1130       } else {
1131         PaintSpinnerButton(aFrame, aPaintData, devPxRect, eventState,
1132                            aAppearance, colors, dpiRatio);
1133       }
1134       break;
1135     case StyleAppearance::Range:
1136       PaintRange(aFrame, aPaintData, devPxRect, eventState, colors, dpiRatio,
1137                  IsRangeHorizontal(aFrame));
1138       break;
1139     case StyleAppearance::RangeThumb:
1140       // Painted as part of StyleAppearance::Range.
1141       break;
1142     case StyleAppearance::ProgressBar:
1143       PaintProgress(aFrame, aPaintData, devPxRect, eventState, colors, dpiRatio,
1144                     /* aIsMeter = */ false);
1145       break;
1146     case StyleAppearance::Progresschunk:
1147       /* Painted as part of the progress bar */
1148       break;
1149     case StyleAppearance::Meter:
1150       PaintProgress(aFrame, aPaintData, devPxRect, eventState, colors, dpiRatio,
1151                     /* aIsMeter = */ true);
1152       break;
1153     case StyleAppearance::Meterchunk:
1154       /* Painted as part of the meter bar */
1155       break;
1156     case StyleAppearance::ScrollbarthumbHorizontal:
1157     case StyleAppearance::ScrollbarthumbVertical: {
1158       bool isHorizontal =
1159           aAppearance == StyleAppearance::ScrollbarthumbHorizontal;
1160       return GetScrollbarDrawing().PaintScrollbarThumb(
1161           aPaintData, devPxRect, isHorizontal, aFrame,
1162           *nsLayoutUtils::StyleForScrollbar(aFrame), eventState, docState,
1163           colors, dpiRatio);
1164     }
1165     case StyleAppearance::ScrollbartrackHorizontal:
1166     case StyleAppearance::ScrollbartrackVertical: {
1167       bool isHorizontal =
1168           aAppearance == StyleAppearance::ScrollbartrackHorizontal;
1169       return GetScrollbarDrawing().PaintScrollbarTrack(
1170           aPaintData, devPxRect, isHorizontal, aFrame,
1171           *nsLayoutUtils::StyleForScrollbar(aFrame), docState, colors,
1172           dpiRatio);
1173     }
1174     case StyleAppearance::ScrollbarHorizontal:
1175     case StyleAppearance::ScrollbarVertical: {
1176       bool isHorizontal = aAppearance == StyleAppearance::ScrollbarHorizontal;
1177       return GetScrollbarDrawing().PaintScrollbar(
1178           aPaintData, devPxRect, isHorizontal, aFrame,
1179           *nsLayoutUtils::StyleForScrollbar(aFrame), eventState, docState,
1180           colors, dpiRatio);
1181     }
1182     case StyleAppearance::Scrollcorner:
1183       return GetScrollbarDrawing().PaintScrollCorner(
1184           aPaintData, devPxRect, aFrame,
1185           *nsLayoutUtils::StyleForScrollbar(aFrame), docState, colors,
1186           dpiRatio);
1187     case StyleAppearance::ScrollbarbuttonUp:
1188     case StyleAppearance::ScrollbarbuttonDown:
1189     case StyleAppearance::ScrollbarbuttonLeft:
1190     case StyleAppearance::ScrollbarbuttonRight:
1191       // For scrollbar-width:thin, we don't display the buttons.
1192       if (!ScrollbarDrawing::IsScrollbarWidthThin(aFrame)) {
1193         if constexpr (std::is_same_v<PaintBackendData, WebRenderBackendData>) {
1194           // TODO: Need to figure out how to best draw this using WR.
1195           return false;
1196         } else {
1197           GetScrollbarDrawing().PaintScrollbarButton(
1198               aPaintData, aAppearance, devPxRect, aFrame,
1199               *nsLayoutUtils::StyleForScrollbar(aFrame), eventState, docState,
1200               colors, dpiRatio);
1201         }
1202       }
1203       break;
1204     case StyleAppearance::Button:
1205       PaintButton(aFrame, aPaintData, devPxRect, eventState, colors, dpiRatio);
1206       break;
1207     case StyleAppearance::FocusOutline:
1208       PaintAutoStyleOutline(aFrame, aPaintData, devPxRect, colors, dpiRatio);
1209       break;
1210     default:
1211       // Various appearance values are used for XUL elements.  Normally these
1212       // will not be available in content documents (and thus in the content
1213       // processes where the native basic theme can be used), but tests are
1214       // run with the remote XUL pref enabled and so we can get in here.  So
1215       // we just return an error rather than assert.
1216       return false;
1217   }
1218
1219   return true;
1220 }
1221
1222 template <typename PaintBackendData>
1223 void Theme::PaintAutoStyleOutline(nsIFrame* aFrame,
1224                                   PaintBackendData& aPaintData,
1225                                   const LayoutDeviceRect& aRect,
1226                                   const Colors& aColors, DPIRatio aDpiRatio) {
1227   auto [innerColor, middleColor, outerColor] = ComputeFocusRectColors(aColors);
1228   Unused << middleColor;
1229   Unused << outerColor;
1230
1231   LayoutDeviceRect rect(aRect);
1232   auto width = LayoutDeviceCoord(
1233       ThemeDrawing::SnapBorderWidth(kInnerFocusOutlineWidth, aDpiRatio));
1234   rect.Inflate(width);
1235
1236   const nscoord offset = aFrame->StyleOutline()->mOutlineOffset.ToAppUnits();
1237   nscoord cssRadii[8];
1238   if (!aFrame->GetBorderRadii(cssRadii)) {
1239     const CSSCoord cssOffset = CSSCoord::FromAppUnits(offset);
1240     const CSSCoord radius =
1241         cssOffset >= 0.0f
1242             ? kInnerFocusOutlineWidth
1243             : std::max(kInnerFocusOutlineWidth + cssOffset, CSSCoord(0.0f));
1244     return ThemeDrawing::PaintRoundedRectWithRadius(
1245         aPaintData, rect, sRGBColor::White(0.0f), innerColor,
1246         kInnerFocusOutlineWidth, radius, aDpiRatio);
1247   }
1248
1249   nsPresContext* pc = aFrame->PresContext();
1250   const Float devPixelOffset = pc->AppUnitsToFloatDevPixels(offset);
1251
1252   RectCornerRadii innerRadii;
1253   nsCSSRendering::ComputePixelRadii(cssRadii, pc->AppUnitsPerDevPixel(),
1254                                     &innerRadii);
1255
1256   const auto borderColor = ToDeviceColor(innerColor);
1257   // NOTE(emilio): This doesn't use PaintRoundedRectWithRadius because we need
1258   // to support arbitrary radii.
1259   RectCornerRadii outerRadii;
1260   if constexpr (std::is_same_v<PaintBackendData, WebRenderBackendData>) {
1261     const Float widths[4] = {width + devPixelOffset, width + devPixelOffset,
1262                              width + devPixelOffset, width + devPixelOffset};
1263     nsCSSBorderRenderer::ComputeOuterRadii(innerRadii, widths, &outerRadii);
1264
1265     const auto dest = wr::ToLayoutRect(rect);
1266     const auto side = wr::ToBorderSide(borderColor, StyleBorderStyle::Solid);
1267     const wr::BorderSide sides[4] = {side, side, side, side};
1268     const bool kBackfaceIsVisible = true;
1269     const auto wrWidths = wr::ToBorderWidths(width, width, width, width);
1270     const auto wrRadius = wr::ToBorderRadius(outerRadii);
1271     aPaintData.mBuilder.PushBorder(dest, dest, kBackfaceIsVisible, wrWidths,
1272                                    {sides, 4}, wrRadius);
1273   } else {
1274     const LayoutDeviceCoord halfWidth = width * 0.5f;
1275     rect.Deflate(halfWidth);
1276     const Float widths[4] = {
1277         halfWidth + devPixelOffset, halfWidth + devPixelOffset,
1278         halfWidth + devPixelOffset, halfWidth + devPixelOffset};
1279     nsCSSBorderRenderer::ComputeOuterRadii(innerRadii, widths, &outerRadii);
1280     RefPtr<Path> path =
1281         MakePathForRoundedRect(aPaintData, rect.ToUnknownRect(), outerRadii);
1282     aPaintData.Stroke(path, ColorPattern(borderColor), StrokeOptions(width));
1283   }
1284 }
1285
1286 LayoutDeviceIntMargin Theme::GetWidgetBorder(nsDeviceContext* aContext,
1287                                              nsIFrame* aFrame,
1288                                              StyleAppearance aAppearance) {
1289   switch (aAppearance) {
1290     case StyleAppearance::Textfield:
1291     case StyleAppearance::Textarea:
1292     case StyleAppearance::NumberInput:
1293     case StyleAppearance::Listbox:
1294     case StyleAppearance::Menulist:
1295     case StyleAppearance::MenulistButton:
1296     case StyleAppearance::Button:
1297       // Return the border size from the UA sheet, even though what we paint
1298       // doesn't actually match that. We know this is the UA sheet border
1299       // because we disable native theming when different border widths are
1300       // specified by authors, see Theme::IsWidgetStyled.
1301       //
1302       // The Rounded() bit is technically redundant, but needed to appease the
1303       // type system, we should always end up with full device pixels due to
1304       // round_border_to_device_pixels at style time.
1305       return LayoutDeviceIntMargin::FromAppUnits(
1306                  aFrame->StyleBorder()->GetComputedBorder(),
1307                  aFrame->PresContext()->AppUnitsPerDevPixel())
1308           .Rounded();
1309     case StyleAppearance::Checkbox:
1310     case StyleAppearance::Radio: {
1311       DPIRatio dpiRatio = GetDPIRatio(aFrame, aAppearance);
1312       LayoutDeviceIntCoord w =
1313           ThemeDrawing::SnapBorderWidth(kCheckboxRadioBorderWidth, dpiRatio);
1314       return LayoutDeviceIntMargin(w, w, w, w);
1315     }
1316     default:
1317       return LayoutDeviceIntMargin();
1318   }
1319 }
1320
1321 bool Theme::GetWidgetPadding(nsDeviceContext* aContext, nsIFrame* aFrame,
1322                              StyleAppearance aAppearance,
1323                              LayoutDeviceIntMargin* aResult) {
1324   switch (aAppearance) {
1325     // Radios and checkboxes return a fixed size in GetMinimumWidgetSize
1326     // and have a meaningful baseline, so they can't have
1327     // author-specified padding.
1328     case StyleAppearance::Radio:
1329     case StyleAppearance::Checkbox:
1330       aResult->SizeTo(0, 0, 0, 0);
1331       return true;
1332     default:
1333       break;
1334   }
1335   return false;
1336 }
1337
1338 bool Theme::GetWidgetOverflow(nsDeviceContext* aContext, nsIFrame* aFrame,
1339                               StyleAppearance aAppearance,
1340                               nsRect* aOverflowRect) {
1341   nsIntMargin overflow;
1342   switch (aAppearance) {
1343     case StyleAppearance::FocusOutline:
1344       // 2px * one segment
1345       overflow.SizeTo(2, 2, 2, 2);
1346       break;
1347     case StyleAppearance::Radio:
1348     case StyleAppearance::Checkbox:
1349     case StyleAppearance::Range:
1350       // 2px for each outline segment, plus 1px separation, plus we paint with a
1351       // 1px extra offset, so 6px.
1352       overflow.SizeTo(6, 6, 6, 6);
1353       break;
1354     case StyleAppearance::Textarea:
1355     case StyleAppearance::Textfield:
1356     case StyleAppearance::NumberInput:
1357     case StyleAppearance::Listbox:
1358     case StyleAppearance::MenulistButton:
1359     case StyleAppearance::Menulist:
1360     case StyleAppearance::Button:
1361       // 2px for each segment, plus 1px separation, but we paint 1px inside
1362       // the border area so 4px overflow.
1363       overflow.SizeTo(4, 4, 4, 4);
1364       break;
1365     default:
1366       return false;
1367   }
1368
1369   // TODO: This should convert from device pixels to app units, not from CSS
1370   // pixels. And it should take the dpi ratio into account.
1371   // Using CSS pixels can cause the overflow to be too small if the page is
1372   // zoomed out.
1373   aOverflowRect->Inflate(nsMargin(CSSPixel::ToAppUnits(overflow.top),
1374                                   CSSPixel::ToAppUnits(overflow.right),
1375                                   CSSPixel::ToAppUnits(overflow.bottom),
1376                                   CSSPixel::ToAppUnits(overflow.left)));
1377
1378   return true;
1379 }
1380
1381 auto Theme::GetScrollbarSizes(nsPresContext* aPresContext,
1382                               StyleScrollbarWidth aWidth, Overlay aOverlay)
1383     -> ScrollbarSizes {
1384   return GetScrollbarDrawing().GetScrollbarSizes(aPresContext, aWidth,
1385                                                  aOverlay);
1386 }
1387
1388 nscoord Theme::GetCheckboxRadioPrefSize() {
1389   return CSSPixel::ToAppUnits(kCheckboxRadioContentBoxSize);
1390 }
1391
1392 /* static */
1393 UniquePtr<ScrollbarDrawing> Theme::ScrollbarStyle() {
1394   switch (StaticPrefs::widget_non_native_theme_scrollbar_style()) {
1395     case 1:
1396       return MakeUnique<ScrollbarDrawingCocoa>();
1397     case 2:
1398       return MakeUnique<ScrollbarDrawingGTK>();
1399     case 3:
1400       return MakeUnique<ScrollbarDrawingAndroid>();
1401     case 4:
1402       return MakeUnique<ScrollbarDrawingWin>();
1403     case 5:
1404       return MakeUnique<ScrollbarDrawingWin11>();
1405     default:
1406       break;
1407   }
1408     // Default to native scrollbar style for each platform.
1409 #ifdef XP_WIN
1410   if (IsWin11OrLater()) {
1411     return MakeUnique<ScrollbarDrawingWin11>();
1412   }
1413   return MakeUnique<ScrollbarDrawingWin>();
1414 #elif MOZ_WIDGET_COCOA
1415   return MakeUnique<ScrollbarDrawingCocoa>();
1416 #elif MOZ_WIDGET_GTK
1417   return MakeUnique<ScrollbarDrawingGTK>();
1418 #elif ANDROID
1419   return MakeUnique<ScrollbarDrawingAndroid>();
1420 #else
1421 #  error "Unknown platform, need scrollbar implementation."
1422 #endif
1423 }
1424
1425 NS_IMETHODIMP
1426 Theme::GetMinimumWidgetSize(nsPresContext* aPresContext, nsIFrame* aFrame,
1427                             StyleAppearance aAppearance,
1428                             LayoutDeviceIntSize* aResult,
1429                             bool* aIsOverridable) {
1430   DPIRatio dpiRatio = GetDPIRatio(aFrame, aAppearance);
1431
1432   aResult->width = aResult->height = 0;
1433   *aIsOverridable = true;
1434
1435   if (IsWidgetScrollbarPart(aAppearance)) {
1436     *aResult = GetScrollbarDrawing().GetMinimumWidgetSize(aPresContext,
1437                                                           aAppearance, aFrame);
1438     return NS_OK;
1439   }
1440
1441   switch (aAppearance) {
1442     case StyleAppearance::Button:
1443       if (aFrame->IsColorControlFrame()) {
1444         aResult->height = (kMinimumColorPickerHeight * dpiRatio).Rounded();
1445       }
1446       break;
1447     case StyleAppearance::RangeThumb:
1448       aResult->SizeTo((kMinimumRangeThumbSize * dpiRatio).Rounded(),
1449                       (kMinimumRangeThumbSize * dpiRatio).Rounded());
1450       break;
1451     case StyleAppearance::MozMenulistArrowButton:
1452       aResult->width = (kMinimumDropdownArrowButtonWidth * dpiRatio).Rounded();
1453       break;
1454     case StyleAppearance::SpinnerUpbutton:
1455     case StyleAppearance::SpinnerDownbutton:
1456       aResult->width = (kMinimumSpinnerButtonWidth * dpiRatio).Rounded();
1457       aResult->height = (kMinimumSpinnerButtonHeight * dpiRatio).Rounded();
1458       break;
1459     default:
1460       break;
1461   }
1462
1463   return NS_OK;
1464 }
1465
1466 nsITheme::Transparency Theme::GetWidgetTransparency(
1467     nsIFrame* aFrame, StyleAppearance aAppearance) {
1468   return GetScrollbarDrawing()
1469       .GetScrollbarPartTransparency(aFrame, aAppearance)
1470       .valueOr(eUnknownTransparency);
1471 }
1472
1473 NS_IMETHODIMP
1474 Theme::WidgetStateChanged(nsIFrame* aFrame, StyleAppearance aAppearance,
1475                           nsAtom* aAttribute, bool* aShouldRepaint,
1476                           const nsAttrValue* aOldValue) {
1477   if (!aAttribute) {
1478     // Hover/focus/active changed.  Always repaint.
1479     *aShouldRepaint = true;
1480   } else {
1481     // Check the attribute to see if it's relevant.
1482     // disabled, checked, dlgtype, default, etc.
1483     *aShouldRepaint = false;
1484     if (aAttribute == nsGkAtoms::disabled || aAttribute == nsGkAtoms::checked ||
1485         aAttribute == nsGkAtoms::selected ||
1486         aAttribute == nsGkAtoms::visuallyselected ||
1487         aAttribute == nsGkAtoms::menuactive ||
1488         aAttribute == nsGkAtoms::sortDirection ||
1489         aAttribute == nsGkAtoms::focused || aAttribute == nsGkAtoms::_default ||
1490         aAttribute == nsGkAtoms::open || aAttribute == nsGkAtoms::hover) {
1491       *aShouldRepaint = true;
1492     }
1493   }
1494
1495   return NS_OK;
1496 }
1497
1498 NS_IMETHODIMP
1499 Theme::ThemeChanged() { return NS_OK; }
1500
1501 bool Theme::WidgetAppearanceDependsOnWindowFocus(StyleAppearance aAppearance) {
1502   return IsWidgetScrollbarPart(aAppearance);
1503 }
1504
1505 nsITheme::ThemeGeometryType Theme::ThemeGeometryTypeForWidget(
1506     nsIFrame* aFrame, StyleAppearance aAppearance) {
1507   return eThemeGeometryTypeUnknown;
1508 }
1509
1510 bool Theme::ThemeSupportsWidget(nsPresContext* aPresContext, nsIFrame* aFrame,
1511                                 StyleAppearance aAppearance) {
1512   switch (aAppearance) {
1513     case StyleAppearance::Radio:
1514     case StyleAppearance::Checkbox:
1515     case StyleAppearance::FocusOutline:
1516     case StyleAppearance::Textarea:
1517     case StyleAppearance::Textfield:
1518     case StyleAppearance::Range:
1519     case StyleAppearance::RangeThumb:
1520     case StyleAppearance::ProgressBar:
1521     case StyleAppearance::Progresschunk:
1522     case StyleAppearance::Meter:
1523     case StyleAppearance::Meterchunk:
1524     case StyleAppearance::ScrollbarbuttonUp:
1525     case StyleAppearance::ScrollbarbuttonDown:
1526     case StyleAppearance::ScrollbarbuttonLeft:
1527     case StyleAppearance::ScrollbarbuttonRight:
1528     case StyleAppearance::ScrollbarthumbHorizontal:
1529     case StyleAppearance::ScrollbarthumbVertical:
1530     case StyleAppearance::ScrollbartrackHorizontal:
1531     case StyleAppearance::ScrollbartrackVertical:
1532     case StyleAppearance::ScrollbarHorizontal:
1533     case StyleAppearance::ScrollbarVertical:
1534     case StyleAppearance::Scrollcorner:
1535     case StyleAppearance::Button:
1536     case StyleAppearance::Listbox:
1537     case StyleAppearance::Menulist:
1538     case StyleAppearance::MenulistButton:
1539     case StyleAppearance::NumberInput:
1540     case StyleAppearance::MozMenulistArrowButton:
1541     case StyleAppearance::SpinnerUpbutton:
1542     case StyleAppearance::SpinnerDownbutton:
1543       return !IsWidgetStyled(aPresContext, aFrame, aAppearance);
1544     default:
1545       return false;
1546   }
1547 }
1548
1549 bool Theme::WidgetIsContainer(StyleAppearance aAppearance) {
1550   switch (aAppearance) {
1551     case StyleAppearance::MozMenulistArrowButton:
1552     case StyleAppearance::Radio:
1553     case StyleAppearance::Checkbox:
1554       return false;
1555     default:
1556       return true;
1557   }
1558 }
1559
1560 bool Theme::ThemeDrawsFocusForWidget(nsIFrame*, StyleAppearance) {
1561   return true;
1562 }
1563
1564 bool Theme::ThemeNeedsComboboxDropmarker() { return true; }
1565
1566 bool Theme::ThemeSupportsScrollbarButtons() {
1567   return GetScrollbarDrawing().ShouldDrawScrollbarButtons();
1568 }
1569
1570 }  // namespace mozilla::widget