ui/native_theme/native_theme_win.cc

   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_win.h"
   6
   7 #include <windows.h>
   8 #include <uxtheme.h>
   9 #include <vsstyle.h>
  10 #include <vssym32.h>
  11
  12 #include "base/basictypes.h"
  13 #include "base/logging.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/win/scoped_gdi_object.h"
  16 #include "base/win/scoped_hdc.h"
  17 #include "base/win/scoped_select_object.h"
  18 #include "base/win/windows_version.h"
  19 #include "skia/ext/bitmap_platform_device.h"
  20 #include "skia/ext/platform_canvas.h"
  21 #include "skia/ext/skia_utils_win.h"
  22 #include "third_party/skia/include/core/SkCanvas.h"
  23 #include "third_party/skia/include/core/SkColor.h"
  24 #include "third_party/skia/include/core/SkColorPriv.h"
  25 #include "third_party/skia/include/core/SkShader.h"
  26 #include "ui/base/resource/material_design/material_design_controller.h"
  27 #include "ui/gfx/color_utils.h"
  28 #include "ui/gfx/gdi_util.h"
  29 #include "ui/gfx/geometry/rect.h"
  30 #include "ui/gfx/geometry/rect_conversions.h"
  31 #include "ui/gfx/win/dpi.h"
  32 #include "ui/native_theme/common_theme.h"
  33
  34 // This was removed from Winvers.h but is still used.
  35 #if !defined(COLOR_MENUHIGHLIGHT)
  36 #define COLOR_MENUHIGHLIGHT 29
  37 #endif
  38
  39 namespace {
  40
  41 // Windows system color IDs cached and updated by the native theme.
  42 const int kSystemColors[] = {
  43   COLOR_3DFACE,
  44   COLOR_BTNTEXT,
  45   COLOR_GRAYTEXT,
  46   COLOR_HIGHLIGHT,
  47   COLOR_HIGHLIGHTTEXT,
  48   COLOR_SCROLLBAR,
  49   COLOR_WINDOW,
  50   COLOR_WINDOWTEXT,
  51   COLOR_BTNFACE,
  52   COLOR_MENUHIGHLIGHT,
  53 };
  54
  55 void SetCheckerboardShader(SkPaint* paint, const RECT& align_rect) {
  56   // Create a 2x2 checkerboard pattern using the 3D face and highlight colors.
  57   const SkColor face = color_utils::GetSysSkColor(COLOR_3DFACE);
  58   const SkColor highlight = color_utils::GetSysSkColor(COLOR_3DHILIGHT);
  59   SkColor buffer[] = { face, highlight, highlight, face };
  60   // Confusing bit: we first create a temporary bitmap with our desired pattern,
  61   // then copy it to another bitmap.  The temporary bitmap doesn't take
  62   // ownership of the pixel data, and so will point to garbage when this
  63   // function returns.  The copy will copy the pixel data into a place owned by
  64   // the bitmap, which is in turn owned by the shader, etc., so it will live
  65   // until we're done using it.
  66   SkImageInfo info = SkImageInfo::MakeN32Premul(2, 2);
  67   SkBitmap temp_bitmap;
  68   temp_bitmap.installPixels(info, buffer, info.minRowBytes());
  69   SkBitmap bitmap;
  70   temp_bitmap.copyTo(&bitmap);
  71
  72   // Align the pattern with the upper corner of |align_rect|.
  73   SkMatrix local_matrix;
  74   local_matrix.setTranslate(SkIntToScalar(align_rect.left),
  75                             SkIntToScalar(align_rect.top));
  76   skia::RefPtr<SkShader> shader =
  77       skia::AdoptRef(SkShader::CreateBitmapShader(bitmap,
  78                                                   SkShader::kRepeat_TileMode,
  79                                                   SkShader::kRepeat_TileMode,
  80                                                   &local_matrix));
  81   paint->setShader(shader.get());
  82 }
  83
  84 //    <-a->
  85 // [  *****             ]
  86 //  ____ |              |
  87 //  <-a-> <------b----->
  88 // a: object_width
  89 // b: frame_width
  90 // *: animating object
  91 //
  92 // - the animation goes from "[" to "]" repeatedly.
  93 // - the animation offset is at first "|"
  94 //
  95 int ComputeAnimationProgress(int frame_width,
  96                              int object_width,
  97                              int pixels_per_second,
  98                              double animated_seconds) {
  99   int animation_width = frame_width + object_width;
 100   double interval = static_cast<double>(animation_width) / pixels_per_second;
 101   double ratio = fmod(animated_seconds, interval) / interval;
 102   return static_cast<int>(animation_width * ratio) - object_width;
 103 }
 104
 105 RECT InsetRect(const RECT* rect, int size) {
 106   gfx::Rect result(*rect);
 107   result.Inset(size, size);
 108   return result.ToRECT();
 109 }
 110
 111 }  // namespace
 112
 113 namespace ui {
 114
 115 bool NativeThemeWin::IsThemingActive() const {
 116   return is_theme_active_ && is_theme_active_();
 117 }
 118
 119 bool NativeThemeWin::IsUsingHighContrastTheme() const {
 120   if (is_using_high_contrast_valid_)
 121     return is_using_high_contrast_;
 122   HIGHCONTRAST result;
 123   result.cbSize = sizeof(HIGHCONTRAST);
 124   is_using_high_contrast_ =
 125       SystemParametersInfo(SPI_GETHIGHCONTRAST, result.cbSize, &result, 0) &&
 126       (result.dwFlags & HCF_HIGHCONTRASTON) == HCF_HIGHCONTRASTON;
 127   is_using_high_contrast_valid_ = true;
 128   return is_using_high_contrast_;
 129 }
 130
 131 HRESULT NativeThemeWin::GetThemeColor(ThemeName theme,
 132                                       int part_id,
 133                                       int state_id,
 134                                       int prop_id,
 135                                       SkColor* color) const {
 136   HANDLE handle = GetThemeHandle(theme);
 137   if (!handle || !get_theme_color_)
 138     return E_NOTIMPL;
 139   COLORREF color_ref;
 140   if (get_theme_color_(handle, part_id, state_id, prop_id, &color_ref) != S_OK)
 141     return E_NOTIMPL;
 142   *color = skia::COLORREFToSkColor(color_ref);
 143   return S_OK;
 144 }
 145
 146 SkColor NativeThemeWin::GetThemeColorWithDefault(ThemeName theme,
 147                                                  int part_id,
 148                                                  int state_id,
 149                                                  int prop_id,
 150                                                  int default_sys_color) const {
 151   SkColor color;
 152   return (GetThemeColor(theme, part_id, state_id, prop_id, &color) == S_OK) ?
 153       color : color_utils::GetSysSkColor(default_sys_color);
 154 }
 155
 156 gfx::Size NativeThemeWin::GetThemeBorderSize(ThemeName theme) const {
 157   // For simplicity use the wildcard state==0, part==0, since it works
 158   // for the cases we currently depend on.
 159   int border;
 160   return (GetThemeInt(theme, 0, 0, TMT_BORDERSIZE, &border) == S_OK) ?
 161       gfx::Size(border, border) :
 162       gfx::Size(GetSystemMetrics(SM_CXEDGE), GetSystemMetrics(SM_CYEDGE));
 163 }
 164
 165 void NativeThemeWin::DisableTheming() const {
 166   if (set_theme_properties_)
 167     set_theme_properties_(0);
 168 }
 169
 170 void NativeThemeWin::CloseHandles() const {
 171   if (!close_theme_)
 172     return;
 173
 174   for (int i = 0; i < LAST; ++i) {
 175     if (theme_handles_[i]) {
 176       close_theme_(theme_handles_[i]);
 177       theme_handles_[i] = NULL;
 178     }
 179   }
 180 }
 181
 182 bool NativeThemeWin::IsClassicTheme(ThemeName name) const {
 183   return !theme_dll_ || !GetThemeHandle(name);
 184 }
 185
 186 // static
 187 NativeThemeWin* NativeThemeWin::instance() {
 188   CR_DEFINE_STATIC_LOCAL(NativeThemeWin, s_native_theme, ());
 189   return &s_native_theme;
 190 }
 191
 192 gfx::Size NativeThemeWin::GetPartSize(Part part,
 193                                       State state,
 194                                       const ExtraParams& extra) const {
 195   gfx::Size part_size = CommonThemeGetPartSize(part, state, extra);
 196   if (!part_size.IsEmpty())
 197     return part_size;
 198
 199   // The GetThemePartSize call below returns the default size without
 200   // accounting for user customization (crbug/218291).
 201   switch (part) {
 202     case kScrollbarDownArrow:
 203     case kScrollbarLeftArrow:
 204     case kScrollbarRightArrow:
 205     case kScrollbarUpArrow:
 206     case kScrollbarHorizontalThumb:
 207     case kScrollbarVerticalThumb:
 208     case kScrollbarHorizontalTrack:
 209     case kScrollbarVerticalTrack: {
 210       int size = gfx::win::GetSystemMetricsInDIP(SM_CXVSCROLL);
 211       if (size == 0)
 212         size = 17;
 213       return gfx::Size(size, size);
 214     }
 215     default:
 216       break;
 217   }
 218
 219   int part_id = GetWindowsPart(part, state, extra);
 220   int state_id = GetWindowsState(part, state, extra);
 221
 222   base::win::ScopedGetDC screen_dc(NULL);
 223   SIZE size;
 224   if (SUCCEEDED(GetThemePartSize(GetThemeName(part), screen_dc, part_id,
 225                                  state_id, NULL, TS_TRUE, &size)))
 226     return gfx::Size(size.cx, size.cy);
 227
 228   // TODO(rogerta): For now, we need to support radio buttons and checkboxes
 229   // when theming is not enabled.  Support for other parts can be added
 230   // if/when needed.
 231   return (part == kCheckbox || part == kRadio) ?
 232       gfx::Size(13, 13) : gfx::Size();
 233 }
 234
 235 void NativeThemeWin::Paint(SkCanvas* canvas,
 236                            Part part,
 237                            State state,
 238                            const gfx::Rect& rect,
 239                            const ExtraParams& extra) const {
 240   if (rect.IsEmpty())
 241     return;
 242
 243   switch (part) {
 244     case kComboboxArrow:
 245       CommonThemePaintComboboxArrow(canvas, rect);
 246       return;
 247     case kMenuPopupGutter:
 248       CommonThemePaintMenuGutter(canvas, rect);
 249       return;
 250     case kMenuPopupSeparator:
 251       CommonThemePaintMenuSeparator(canvas, rect);
 252       return;
 253     case kMenuPopupBackground:
 254       CommonThemePaintMenuBackground(canvas, rect);
 255       return;
 256     case kMenuItemBackground:
 257       CommonThemePaintMenuItemBackground(canvas, state, rect);
 258       return;
 259     default:
 260       break;
 261   }
 262
 263   bool needs_paint_indirect = false;
 264   if (!skia::SupportsPlatformPaint(canvas)) {
 265     // This block will only get hit with --enable-accelerated-drawing flag.
 266     needs_paint_indirect = true;
 267   } else {
 268     // Scrollbar components on Windows Classic theme (on all Windows versions)
 269     // have particularly problematic alpha values, so always draw them
 270     // indirectly. In addition, scrollbar thumbs and grippers for the Windows XP
 271     // theme (available only on Windows XP) also need their alpha values
 272     // fixed.
 273     switch (part) {
 274       case kScrollbarDownArrow:
 275       case kScrollbarUpArrow:
 276       case kScrollbarLeftArrow:
 277       case kScrollbarRightArrow:
 278         needs_paint_indirect = !GetThemeHandle(SCROLLBAR);
 279         break;
 280       case kScrollbarHorizontalThumb:
 281       case kScrollbarVerticalThumb:
 282       case kScrollbarHorizontalGripper:
 283       case kScrollbarVerticalGripper:
 284         needs_paint_indirect = !GetThemeHandle(SCROLLBAR) ||
 285             base::win::GetVersion() == base::win::VERSION_XP;
 286         break;
 287       default:
 288         break;
 289     }
 290   }
 291
 292   if (needs_paint_indirect)
 293     PaintIndirect(canvas, part, state, rect, extra);
 294   else
 295     PaintDirect(canvas, part, state, rect, extra);
 296 }
 297
 298 NativeThemeWin::NativeThemeWin()
 299     : draw_theme_(NULL),
 300       draw_theme_ex_(NULL),
 301       get_theme_color_(NULL),
 302       get_theme_content_rect_(NULL),
 303       get_theme_part_size_(NULL),
 304       open_theme_(NULL),
 305       close_theme_(NULL),
 306       set_theme_properties_(NULL),
 307       is_theme_active_(NULL),
 308       get_theme_int_(NULL),
 309       theme_dll_(LoadLibrary(L"uxtheme.dll")),
 310       color_change_listener_(this),
 311       is_using_high_contrast_(false),
 312       is_using_high_contrast_valid_(false) {
 313   if (theme_dll_) {
 314     draw_theme_ = reinterpret_cast<DrawThemeBackgroundPtr>(
 315         GetProcAddress(theme_dll_, "DrawThemeBackground"));
 316     draw_theme_ex_ = reinterpret_cast<DrawThemeBackgroundExPtr>(
 317         GetProcAddress(theme_dll_, "DrawThemeBackgroundEx"));
 318     get_theme_color_ = reinterpret_cast<GetThemeColorPtr>(
 319         GetProcAddress(theme_dll_, "GetThemeColor"));
 320     get_theme_content_rect_ = reinterpret_cast<GetThemeContentRectPtr>(
 321         GetProcAddress(theme_dll_, "GetThemeBackgroundContentRect"));
 322     get_theme_part_size_ = reinterpret_cast<GetThemePartSizePtr>(
 323         GetProcAddress(theme_dll_, "GetThemePartSize"));
 324     open_theme_ = reinterpret_cast<OpenThemeDataPtr>(
 325         GetProcAddress(theme_dll_, "OpenThemeData"));
 326     close_theme_ = reinterpret_cast<CloseThemeDataPtr>(
 327         GetProcAddress(theme_dll_, "CloseThemeData"));
 328     set_theme_properties_ = reinterpret_cast<SetThemeAppPropertiesPtr>(
 329         GetProcAddress(theme_dll_, "SetThemeAppProperties"));
 330     is_theme_active_ = reinterpret_cast<IsThemeActivePtr>(
 331         GetProcAddress(theme_dll_, "IsThemeActive"));
 332     get_theme_int_ = reinterpret_cast<GetThemeIntPtr>(
 333         GetProcAddress(theme_dll_, "GetThemeInt"));
 334   }
 335   memset(theme_handles_, 0, sizeof(theme_handles_));
 336
 337   // Initialize the cached system colors.
 338   UpdateSystemColors();
 339 }
 340
 341 NativeThemeWin::~NativeThemeWin() {
 342   if (theme_dll_) {
 343     // todo (cpu): fix this soon.  Making a call to CloseHandles() here breaks
 344     // certain tests and the reliability bots.
 345     // CloseHandles();
 346     FreeLibrary(theme_dll_);
 347   }
 348 }
 349
 350 void NativeThemeWin::OnSysColorChange() {
 351   UpdateSystemColors();
 352   is_using_high_contrast_valid_ = false;
 353   NotifyObservers();
 354 }
 355
 356 void NativeThemeWin::UpdateSystemColors() {
 357   for (int i = 0; i < arraysize(kSystemColors); ++i) {
 358     system_colors_[kSystemColors[i]] =
 359         color_utils::GetSysSkColor(kSystemColors[i]);
 360   }
 361 }
 362
 363 void NativeThemeWin::PaintDirect(SkCanvas* canvas,
 364                                  Part part,
 365                                  State state,
 366                                  const gfx::Rect& rect,
 367                                  const ExtraParams& extra) const {
 368   skia::ScopedPlatformPaint scoped_platform_paint(canvas);
 369   HDC hdc = scoped_platform_paint.GetPlatformSurface();
 370
 371   switch (part) {
 372     case kCheckbox:
 373       PaintCheckbox(hdc, part, state, rect, extra.button);
 374       return;
 375     case kInnerSpinButton:
 376       PaintSpinButton(hdc, part, state, rect, extra.inner_spin);
 377       return;
 378     case kMenuList:
 379       PaintMenuList(hdc, state, rect, extra.menu_list);
 380       return;
 381     case kMenuCheck:
 382       PaintMenuCheck(hdc, state, rect, extra.menu_check);
 383       return;
 384     case kMenuCheckBackground:
 385       PaintMenuCheckBackground(hdc, state, rect);
 386       return;
 387     case kMenuPopupArrow:
 388       PaintMenuArrow(hdc, state, rect, extra.menu_arrow);
 389       return;
 390     case kMenuPopupBackground:
 391       PaintMenuBackground(hdc, rect);
 392       return;
 393     case kMenuPopupGutter:
 394       PaintMenuGutter(hdc, rect);
 395       return;
 396     case kMenuPopupSeparator:
 397       PaintMenuSeparator(hdc, rect);
 398       return;
 399     case kMenuItemBackground:
 400       PaintMenuItemBackground(hdc, state, rect, extra.menu_item);
 401       return;
 402     case kProgressBar:
 403       PaintProgressBar(hdc, rect, extra.progress_bar);
 404       return;
 405     case kPushButton:
 406       PaintPushButton(hdc, part, state, rect, extra.button);
 407       return;
 408     case kRadio:
 409       PaintRadioButton(hdc, part, state, rect, extra.button);
 410       return;
 411     case kScrollbarDownArrow:
 412     case kScrollbarUpArrow:
 413     case kScrollbarLeftArrow:
 414     case kScrollbarRightArrow:
 415       PaintScrollbarArrow(hdc, part, state, rect, extra.scrollbar_arrow);
 416       return;
 417     case kScrollbarHorizontalThumb:
 418     case kScrollbarVerticalThumb:
 419     case kScrollbarHorizontalGripper:
 420     case kScrollbarVerticalGripper:
 421       PaintScrollbarThumb(hdc, part, state, rect, extra.scrollbar_thumb);
 422       return;
 423     case kScrollbarHorizontalTrack:
 424     case kScrollbarVerticalTrack:
 425       PaintScrollbarTrack(canvas, hdc, part, state, rect,
 426                           extra.scrollbar_track);
 427       return;
 428     case kScrollbarCorner:
 429       canvas->drawColor(SK_ColorWHITE, SkXfermode::kSrc_Mode);
 430       return;
 431     case kTabPanelBackground:
 432       PaintTabPanelBackground(hdc, rect);
 433       return;
 434     case kTextField:
 435       PaintTextField(hdc, part, state, rect, extra.text_field);
 436       return;
 437     case kTrackbarThumb:
 438     case kTrackbarTrack:
 439       PaintTrackbar(canvas, hdc, part, state, rect, extra.trackbar);
 440       return;
 441     case kWindowResizeGripper:
 442       PaintWindowResizeGripper(hdc, rect);
 443       return;
 444     case kComboboxArrow:
 445     case kSliderTrack:
 446     case kSliderThumb:
 447     case kMaxPart:
 448       NOTREACHED();
 449   }
 450 }
 451
 452 SkColor NativeThemeWin::GetSystemColor(ColorId color_id) const {
 453   SkColor color;
 454   if (CommonThemeGetSystemColor(color_id, &color))
 455     return color;
 456
 457   // TODO: Obtain the correct colors using GetSysColor.
 458   const SkColor kInvalidColorIdColor = SkColorSetRGB(255, 0, 128);
 459   const SkColor kUrlTextColor = SkColorSetRGB(0x0b, 0x80, 0x43);
 460   // Dialogs:
 461   const SkColor kDialogBackgroundColor = SkColorSetRGB(251, 251, 251);
 462   // FocusableBorder:
 463   const SkColor kFocusedBorderColor = SkColorSetRGB(0x4d, 0x90, 0xfe);
 464   const SkColor kUnfocusedBorderColor = SkColorSetRGB(0xd9, 0xd9, 0xd9);
 465   // Button:
 466   const SkColor kButtonBackgroundColor = SkColorSetRGB(0xde, 0xde, 0xde);
 467   const SkColor kButtonHighlightColor = SkColorSetARGB(200, 255, 255, 255);
 468   const SkColor kButtonHoverColor = SkColorSetRGB(6, 45, 117);
 469   const SkColor kButtonHoverBackgroundColor = SkColorSetRGB(0xEA, 0xEA, 0xEA);
 470   // MenuItem:
 471   const SkColor kEnabledMenuItemForegroundColor = SkColorSetRGB(6, 45, 117);
 472   const SkColor kDisabledMenuItemForegroundColor = SkColorSetRGB(161, 161, 146);
 473   const SkColor kFocusedMenuItemBackgroundColor = SkColorSetRGB(246, 249, 253);
 474   const SkColor kMenuSeparatorColor = SkColorSetARGB(50, 0, 0, 0);
 475   // Table:
 476   const SkColor kPositiveTextColor = SkColorSetRGB(0x0b, 0x80, 0x43);
 477   const SkColor kNegativeTextColor = SkColorSetRGB(0xc5, 0x39, 0x29);
 478
 479   switch (color_id) {
 480     // Windows
 481     case kColorId_WindowBackground:
 482       return system_colors_[COLOR_WINDOW];
 483
 484     // Dialogs
 485     case kColorId_DialogBackground:
 486       return color_utils::IsInvertedColorScheme() ?
 487           color_utils::InvertColor(kDialogBackgroundColor) :
 488           kDialogBackgroundColor;
 489
 490     // FocusableBorder
 491     case kColorId_FocusedBorderColor:
 492       return kFocusedBorderColor;
 493     case kColorId_UnfocusedBorderColor:
 494       return kUnfocusedBorderColor;
 495
 496     // Button
 497     case kColorId_ButtonBackgroundColor:
 498       return kButtonBackgroundColor;
 499     case kColorId_ButtonEnabledColor:
 500       return system_colors_[COLOR_BTNTEXT];
 501     case kColorId_ButtonDisabledColor:
 502       return system_colors_[COLOR_GRAYTEXT];
 503     case kColorId_ButtonHighlightColor:
 504       return kButtonHighlightColor;
 505     case kColorId_ButtonHoverColor:
 506       return kButtonHoverColor;
 507     case kColorId_ButtonHoverBackgroundColor:
 508       return kButtonHoverBackgroundColor;
 509     case kColorId_BlueButtonEnabledColor:
 510     case kColorId_BlueButtonDisabledColor:
 511     case kColorId_BlueButtonPressedColor:
 512     case kColorId_BlueButtonHoverColor:
 513       NOTREACHED();
 514       return kInvalidColorIdColor;
 515
 516     // MenuItem
 517     case kColorId_EnabledMenuItemForegroundColor:
 518       return kEnabledMenuItemForegroundColor;
 519     case kColorId_DisabledMenuItemForegroundColor:
 520       return kDisabledMenuItemForegroundColor;
 521     case kColorId_DisabledEmphasizedMenuItemForegroundColor:
 522       return SK_ColorBLACK;
 523     case kColorId_FocusedMenuItemBackgroundColor:
 524       return kFocusedMenuItemBackgroundColor;
 525     case kColorId_MenuSeparatorColor:
 526       return kMenuSeparatorColor;
 527     case kColorId_SelectedMenuItemForegroundColor:
 528     case kColorId_HoverMenuItemBackgroundColor:
 529     case kColorId_MenuBackgroundColor:
 530     case kColorId_MenuBorderColor:
 531       NOTREACHED();
 532       return kInvalidColorIdColor;
 533
 534     // MenuButton
 535     case kColorId_EnabledMenuButtonBorderColor:
 536     case kColorId_FocusedMenuButtonBorderColor:
 537     case kColorId_HoverMenuButtonBorderColor:
 538       NOTREACHED();
 539       return kInvalidColorIdColor;
 540
 541     // Label
 542     case kColorId_LabelEnabledColor:
 543       return system_colors_[COLOR_BTNTEXT];
 544     case kColorId_LabelDisabledColor:
 545       return system_colors_[COLOR_GRAYTEXT];
 546     case kColorId_LabelBackgroundColor:
 547       return system_colors_[COLOR_WINDOW];
 548
 549     // Link
 550     case kColorId_LinkDisabled:
 551       return system_colors_[COLOR_WINDOWTEXT];
 552     case kColorId_LinkEnabled:
 553       return system_colors_[COLOR_HOTLIGHT];
 554     case kColorId_LinkPressed:
 555       return SkColorSetRGB(200, 0, 0);
 556
 557     // Textfield
 558     case kColorId_TextfieldDefaultColor:
 559       return system_colors_[COLOR_WINDOWTEXT];
 560     case kColorId_TextfieldDefaultBackground:
 561       return system_colors_[COLOR_WINDOW];
 562     case kColorId_TextfieldReadOnlyColor:
 563       return system_colors_[COLOR_GRAYTEXT];
 564     case kColorId_TextfieldReadOnlyBackground:
 565       return system_colors_[COLOR_3DFACE];
 566     case kColorId_TextfieldSelectionColor:
 567       return system_colors_[COLOR_HIGHLIGHTTEXT];
 568     case kColorId_TextfieldSelectionBackgroundFocused:
 569       return system_colors_[COLOR_HIGHLIGHT];
 570
 571     // Tooltip
 572     case kColorId_TooltipBackground:
 573     case kColorId_TooltipText:
 574       NOTREACHED();
 575       return kInvalidColorIdColor;
 576
 577     // Tree
 578     // NOTE: these aren't right for all themes, but as close as I could get.
 579     case kColorId_TreeBackground:
 580       return system_colors_[COLOR_WINDOW];
 581     case kColorId_TreeText:
 582       return system_colors_[COLOR_WINDOWTEXT];
 583     case kColorId_TreeSelectedText:
 584       return system_colors_[COLOR_HIGHLIGHTTEXT];
 585     case kColorId_TreeSelectedTextUnfocused:
 586       return system_colors_[COLOR_BTNTEXT];
 587     case kColorId_TreeSelectionBackgroundFocused:
 588       return system_colors_[COLOR_HIGHLIGHT];
 589     case kColorId_TreeSelectionBackgroundUnfocused:
 590       return system_colors_[IsUsingHighContrastTheme() ?
 591                               COLOR_MENUHIGHLIGHT : COLOR_BTNFACE];
 592     case kColorId_TreeArrow:
 593       return system_colors_[COLOR_WINDOWTEXT];
 594
 595     // Table
 596     case kColorId_TableBackground:
 597       return system_colors_[COLOR_WINDOW];
 598     case kColorId_TableText:
 599       return system_colors_[COLOR_WINDOWTEXT];
 600     case kColorId_TableSelectedText:
 601       return system_colors_[COLOR_HIGHLIGHTTEXT];
 602     case kColorId_TableSelectedTextUnfocused:
 603       return system_colors_[COLOR_BTNTEXT];
 604     case kColorId_TableSelectionBackgroundFocused:
 605       return system_colors_[COLOR_HIGHLIGHT];
 606     case kColorId_TableSelectionBackgroundUnfocused:
 607       return system_colors_[IsUsingHighContrastTheme() ?
 608                               COLOR_MENUHIGHLIGHT : COLOR_BTNFACE];
 609     case kColorId_TableGroupingIndicatorColor:
 610       return system_colors_[COLOR_GRAYTEXT];
 611
 612     // Results Tables
 613     case kColorId_ResultsTableNormalBackground:
 614       return system_colors_[COLOR_WINDOW];
 615     case kColorId_ResultsTableHoveredBackground:
 616       return color_utils::AlphaBlend(system_colors_[COLOR_HIGHLIGHT],
 617                                      system_colors_[COLOR_WINDOW], 0x40);
 618     case kColorId_ResultsTableSelectedBackground:
 619       return system_colors_[COLOR_HIGHLIGHT];
 620     case kColorId_ResultsTableNormalText:
 621       return system_colors_[COLOR_WINDOWTEXT];
 622     case kColorId_ResultsTableHoveredText:
 623       return color_utils::GetReadableColor(
 624           system_colors_[COLOR_WINDOWTEXT],
 625           GetSystemColor(kColorId_ResultsTableHoveredBackground));
 626     case kColorId_ResultsTableSelectedText:
 627       return system_colors_[COLOR_HIGHLIGHTTEXT];
 628     case kColorId_ResultsTableNormalDimmedText:
 629       return color_utils::AlphaBlend(system_colors_[COLOR_WINDOWTEXT],
 630                                      system_colors_[COLOR_WINDOW], 0x80);
 631     case kColorId_ResultsTableHoveredDimmedText:
 632       return color_utils::AlphaBlend(
 633           system_colors_[COLOR_WINDOWTEXT],
 634           GetSystemColor(kColorId_ResultsTableHoveredBackground), 0x80);
 635     case kColorId_ResultsTableSelectedDimmedText:
 636       return color_utils::AlphaBlend(system_colors_[COLOR_HIGHLIGHTTEXT],
 637                                      system_colors_[COLOR_HIGHLIGHT], 0x80);
 638     case kColorId_ResultsTableNormalUrl:
 639       return color_utils::GetReadableColor(kUrlTextColor,
 640                                            system_colors_[COLOR_WINDOW]);
 641     case kColorId_ResultsTableHoveredUrl:
 642       return color_utils::GetReadableColor(
 643           kUrlTextColor,
 644           GetSystemColor(kColorId_ResultsTableHoveredBackground));
 645     case kColorId_ResultsTableSelectedUrl:
 646       return color_utils::GetReadableColor(kUrlTextColor,
 647                                            system_colors_[COLOR_HIGHLIGHT]);
 648     case kColorId_ResultsTableNormalDivider:
 649       return color_utils::AlphaBlend(system_colors_[COLOR_WINDOWTEXT],
 650                                      system_colors_[COLOR_WINDOW], 0x34);
 651     case kColorId_ResultsTableHoveredDivider:
 652       return color_utils::AlphaBlend(
 653           system_colors_[COLOR_WINDOWTEXT],
 654           GetSystemColor(kColorId_ResultsTableHoveredBackground), 0x34);
 655     case kColorId_ResultsTableSelectedDivider:
 656       return color_utils::AlphaBlend(system_colors_[COLOR_HIGHLIGHTTEXT],
 657                                      system_colors_[COLOR_HIGHLIGHT], 0x34);
 658     case kColorId_ResultsTablePositiveText:
 659       return color_utils::GetReadableColor(kPositiveTextColor,
 660                                            system_colors_[COLOR_WINDOW]);
 661     case kColorId_ResultsTablePositiveHoveredText:
 662       return color_utils::GetReadableColor(
 663           kPositiveTextColor,
 664           GetSystemColor(kColorId_ResultsTableHoveredBackground));
 665     case kColorId_ResultsTablePositiveSelectedText:
 666       return color_utils::GetReadableColor(kPositiveTextColor,
 667                                            system_colors_[COLOR_HIGHLIGHT]);
 668     case kColorId_ResultsTableNegativeText:
 669       return color_utils::GetReadableColor(kNegativeTextColor,
 670                                            system_colors_[COLOR_WINDOW]);
 671     case kColorId_ResultsTableNegativeHoveredText:
 672       return color_utils::GetReadableColor(
 673           kNegativeTextColor,
 674           GetSystemColor(kColorId_ResultsTableHoveredBackground));
 675     case kColorId_ResultsTableNegativeSelectedText:
 676       return color_utils::GetReadableColor(kNegativeTextColor,
 677                                            system_colors_[COLOR_HIGHLIGHT]);
 678     default:
 679       NOTREACHED();
 680       return kInvalidColorIdColor;
 681   }
 682 }
 683
 684 void NativeThemeWin::PaintIndirect(SkCanvas* canvas,
 685                                    Part part,
 686                                    State state,
 687                                    const gfx::Rect& rect,
 688                                    const ExtraParams& extra) const {
 689   // TODO(asvitkine): This path is pretty inefficient - for each paint operation
 690   //                  it creates a new offscreen bitmap Skia canvas. This can
 691   //                  be sped up by doing it only once per part/state and
 692   //                  keeping a cache of the resulting bitmaps.
 693
 694   // Create an offscreen canvas that is backed by an HDC.
 695   skia::RefPtr<skia::BitmapPlatformDevice> device = skia::AdoptRef(
 696       skia::BitmapPlatformDevice::Create(
 697           rect.width(), rect.height(), false, NULL));
 698   DCHECK(device);
 699   SkCanvas offscreen_canvas(device.get());
 700   DCHECK(skia::SupportsPlatformPaint(&offscreen_canvas));
 701
 702   // Some of the Windows theme drawing operations do not write correct alpha
 703   // values for fully-opaque pixels; instead the pixels get alpha 0. This is
 704   // especially a problem on Windows XP or when using the Classic theme.
 705   //
 706   // To work-around this, mark all pixels with a placeholder value, to detect
 707   // which pixels get touched by the paint operation. After paint, set any
 708   // pixels that have alpha 0 to opaque and placeholders to fully-transparent.
 709   const SkColor placeholder = SkColorSetARGB(1, 0, 0, 0);
 710   offscreen_canvas.clear(placeholder);
 711
 712   // Offset destination rects to have origin (0,0).
 713   gfx::Rect adjusted_rect(rect.size());
 714   ExtraParams adjusted_extra(extra);
 715   switch (part) {
 716     case kProgressBar:
 717       adjusted_extra.progress_bar.value_rect_x = 0;
 718       adjusted_extra.progress_bar.value_rect_y = 0;
 719       break;
 720     case kScrollbarHorizontalTrack:
 721     case kScrollbarVerticalTrack:
 722       adjusted_extra.scrollbar_track.track_x = 0;
 723       adjusted_extra.scrollbar_track.track_y = 0;
 724       break;
 725     default:
 726       break;
 727   }
 728   // Draw the theme controls using existing HDC-drawing code.
 729   PaintDirect(&offscreen_canvas, part, state, adjusted_rect, adjusted_extra);
 730
 731   // Copy the pixels to a bitmap that has ref-counted pixel storage, which is
 732   // necessary to have when drawing to a SkPicture.
 733   const SkBitmap& hdc_bitmap =
 734       offscreen_canvas.getDevice()->accessBitmap(false);
 735   SkBitmap bitmap;
 736   hdc_bitmap.copyTo(&bitmap, kN32_SkColorType);
 737
 738   // Post-process the pixels to fix up the alpha values (see big comment above).
 739   const SkPMColor placeholder_value = SkPreMultiplyColor(placeholder);
 740   const int pixel_count = rect.width() * rect.height();
 741   SkPMColor* pixels = bitmap.getAddr32(0, 0);
 742   for (int i = 0; i < pixel_count; i++) {
 743     if (pixels[i] == placeholder_value) {
 744       // Pixel wasn't touched - make it fully transparent.
 745       pixels[i] = SkPackARGB32(0, 0, 0, 0);
 746     } else if (SkGetPackedA32(pixels[i]) == 0) {
 747       // Pixel was touched but has incorrect alpha of 0, make it fully opaque.
 748       pixels[i] = SkPackARGB32(0xFF,
 749                                SkGetPackedR32(pixels[i]),
 750                                SkGetPackedG32(pixels[i]),
 751                                SkGetPackedB32(pixels[i]));
 752     }
 753   }
 754
 755   // Draw the offscreen bitmap to the destination canvas.
 756   canvas->drawBitmap(bitmap, rect.x(), rect.y());
 757 }
 758
 759 HRESULT NativeThemeWin::GetThemePartSize(ThemeName theme_name,
 760                                          HDC hdc,
 761                                          int part_id,
 762                                          int state_id,
 763                                          RECT* rect,
 764                                          int ts,
 765                                          SIZE* size) const {
 766   HANDLE handle = GetThemeHandle(theme_name);
 767   return (handle && get_theme_part_size_) ?
 768       get_theme_part_size_(handle, hdc, part_id, state_id, rect, ts, size) :
 769       E_NOTIMPL;
 770 }
 771
 772 HRESULT NativeThemeWin::PaintButton(HDC hdc,
 773                                     State state,
 774                                     const ButtonExtraParams& extra,
 775                                     int part_id,
 776                                     int state_id,
 777                                     RECT* rect) const {
 778   HANDLE handle = GetThemeHandle(BUTTON);
 779   if (handle && draw_theme_)
 780     return draw_theme_(handle, hdc, part_id, state_id, rect, NULL);
 781
 782   // Adjust classic_state based on part, state, and extras.
 783   int classic_state = extra.classic_state;
 784   switch (part_id) {
 785     case BP_CHECKBOX:
 786       classic_state |= DFCS_BUTTONCHECK;
 787       break;
 788     case BP_RADIOBUTTON:
 789       classic_state |= DFCS_BUTTONRADIO;
 790       break;
 791     case BP_PUSHBUTTON:
 792       classic_state |= DFCS_BUTTONPUSH;
 793       break;
 794     default:
 795       NOTREACHED();
 796       break;
 797   }
 798
 799   switch (state) {
 800     case kDisabled:
 801       classic_state |= DFCS_INACTIVE;
 802       break;
 803     case kHovered:
 804     case kNormal:
 805       break;
 806     case kPressed:
 807       classic_state |= DFCS_PUSHED;
 808       break;
 809     case kNumStates:
 810       NOTREACHED();
 811       break;
 812   }
 813
 814   if (extra.checked)
 815     classic_state |= DFCS_CHECKED;
 816
 817   // Draw it manually.
 818   // All pressed states have both low bits set, and no other states do.
 819   const bool focused = ((state_id & ETS_FOCUSED) == ETS_FOCUSED);
 820   const bool pressed = ((state_id & PBS_PRESSED) == PBS_PRESSED);
 821   if ((BP_PUSHBUTTON == part_id) && (pressed || focused)) {
 822     // BP_PUSHBUTTON has a focus rect drawn around the outer edge, and the
 823     // button itself is shrunk by 1 pixel.
 824     HBRUSH brush = GetSysColorBrush(COLOR_3DDKSHADOW);
 825     if (brush) {
 826       FrameRect(hdc, rect, brush);
 827       InflateRect(rect, -1, -1);
 828     }
 829   }
 830   DrawFrameControl(hdc, rect, DFC_BUTTON, classic_state);
 831
 832   // Draw the focus rectangle (the dotted line box) only on buttons.  For radio
 833   // and checkboxes, we let webkit draw the focus rectangle (orange glow).
 834   if ((BP_PUSHBUTTON == part_id) && focused) {
 835     // The focus rect is inside the button.  The exact number of pixels depends
 836     // on whether we're in classic mode or using uxtheme.
 837     if (handle && get_theme_content_rect_) {
 838       get_theme_content_rect_(handle, hdc, part_id, state_id, rect, rect);
 839     } else {
 840       InflateRect(rect, -GetSystemMetrics(SM_CXEDGE),
 841                   -GetSystemMetrics(SM_CYEDGE));
 842     }
 843     DrawFocusRect(hdc, rect);
 844   }
 845
 846   // Classic theme doesn't support indeterminate checkboxes.  We draw
 847   // a recangle inside a checkbox like IE10 does.
 848   if (part_id == BP_CHECKBOX && extra.indeterminate) {
 849     RECT inner_rect = *rect;
 850     // "4 / 13" is same as IE10 in classic theme.
 851     int padding = (inner_rect.right - inner_rect.left) * 4 / 13;
 852     InflateRect(&inner_rect, -padding, -padding);
 853     int color_index = state == kDisabled ? COLOR_GRAYTEXT : COLOR_WINDOWTEXT;
 854     FillRect(hdc, &inner_rect, GetSysColorBrush(color_index));
 855   }
 856
 857   return S_OK;
 858 }
 859
 860 HRESULT NativeThemeWin::PaintMenuSeparator(
 861     HDC hdc,
 862     const gfx::Rect& rect) const {
 863   RECT rect_win = rect.ToRECT();
 864
 865   HANDLE handle = GetThemeHandle(MENU);
 866   if (handle && draw_theme_) {
 867     // Delta is needed for non-classic to move separator up slightly.
 868     --rect_win.top;
 869     --rect_win.bottom;
 870     return draw_theme_(handle, hdc, MENU_POPUPSEPARATOR, MPI_NORMAL, &rect_win,
 871                        NULL);
 872   }
 873
 874   DrawEdge(hdc, &rect_win, EDGE_ETCHED, BF_TOP);
 875   return S_OK;
 876 }
 877
 878 HRESULT NativeThemeWin::PaintMenuGutter(HDC hdc,
 879                                         const gfx::Rect& rect) const {
 880   RECT rect_win = rect.ToRECT();
 881   HANDLE handle = GetThemeHandle(MENU);
 882   return (handle && draw_theme_) ?
 883       draw_theme_(handle, hdc, MENU_POPUPGUTTER, MPI_NORMAL, &rect_win, NULL) :
 884       E_NOTIMPL;
 885 }
 886
 887 HRESULT NativeThemeWin::PaintMenuArrow(
 888     HDC hdc,
 889     State state,
 890     const gfx::Rect& rect,
 891     const MenuArrowExtraParams& extra) const {
 892   int state_id = MSM_NORMAL;
 893   if (state == kDisabled)
 894     state_id = MSM_DISABLED;
 895
 896   HANDLE handle = GetThemeHandle(MENU);
 897   RECT rect_win = rect.ToRECT();
 898   if (handle && draw_theme_) {
 899     if (extra.pointing_right) {
 900       return draw_theme_(handle, hdc, MENU_POPUPSUBMENU, state_id, &rect_win,
 901                          NULL);
 902     }
 903     // There is no way to tell the uxtheme API to draw a left pointing arrow; it
 904     // doesn't have a flag equivalent to DFCS_MENUARROWRIGHT.  But they are
 905     // needed for RTL locales on Vista.  So use a memory DC and mirror the
 906     // region with GDI's StretchBlt.
 907     gfx::Rect r(rect);
 908     base::win::ScopedCreateDC mem_dc(CreateCompatibleDC(hdc));
 909     base::win::ScopedBitmap mem_bitmap(CreateCompatibleBitmap(hdc, r.width(),
 910                                                               r.height()));
 911     base::win::ScopedSelectObject select_bitmap(mem_dc.Get(), mem_bitmap);
 912     // Copy and horizontally mirror the background from hdc into mem_dc. Use
 913     // a negative-width source rect, starting at the rightmost pixel.
 914     StretchBlt(mem_dc.Get(), 0, 0, r.width(), r.height(),
 915                hdc, r.right()-1, r.y(), -r.width(), r.height(), SRCCOPY);
 916     // Draw the arrow.
 917     RECT theme_rect = {0, 0, r.width(), r.height()};
 918     HRESULT result = draw_theme_(handle, mem_dc.Get(), MENU_POPUPSUBMENU,
 919                                   state_id, &theme_rect, NULL);
 920     // Copy and mirror the result back into mem_dc.
 921     StretchBlt(hdc, r.x(), r.y(), r.width(), r.height(),
 922                mem_dc.Get(), r.width()-1, 0, -r.width(), r.height(), SRCCOPY);
 923     return result;
 924   }
 925
 926   // For some reason, Windows uses the name DFCS_MENUARROWRIGHT to indicate a
 927   // left pointing arrow. This makes the following statement counterintuitive.
 928   UINT pfc_state = extra.pointing_right ? DFCS_MENUARROW : DFCS_MENUARROWRIGHT;
 929   return PaintFrameControl(hdc, rect, DFC_MENU, pfc_state, extra.is_selected,
 930                            state);
 931 }
 932
 933 HRESULT NativeThemeWin::PaintMenuBackground(HDC hdc,
 934                                             const gfx::Rect& rect) const {
 935   HANDLE handle = GetThemeHandle(MENU);
 936   RECT rect_win = rect.ToRECT();
 937   if (handle && draw_theme_) {
 938     HRESULT result = draw_theme_(handle, hdc, MENU_POPUPBACKGROUND, 0,
 939                                  &rect_win, NULL);
 940     FrameRect(hdc, &rect_win, GetSysColorBrush(COLOR_3DSHADOW));
 941     return result;
 942   }
 943
 944   FillRect(hdc, &rect_win, GetSysColorBrush(COLOR_MENU));
 945   DrawEdge(hdc, &rect_win, EDGE_RAISED, BF_RECT);
 946   return S_OK;
 947 }
 948
 949 HRESULT NativeThemeWin::PaintMenuCheck(
 950     HDC hdc,
 951     State state,
 952     const gfx::Rect& rect,
 953     const MenuCheckExtraParams& extra) const {
 954   HANDLE handle = GetThemeHandle(MENU);
 955   if (handle && draw_theme_) {
 956     const int state_id = extra.is_radio ?
 957         ((state == kDisabled) ? MC_BULLETDISABLED : MC_BULLETNORMAL) :
 958         ((state == kDisabled) ? MC_CHECKMARKDISABLED : MC_CHECKMARKNORMAL);
 959     RECT rect_win = rect.ToRECT();
 960     return draw_theme_(handle, hdc, MENU_POPUPCHECK, state_id, &rect_win, NULL);
 961   }
 962
 963   return PaintFrameControl(hdc, rect, DFC_MENU,
 964                            extra.is_radio ? DFCS_MENUBULLET : DFCS_MENUCHECK,
 965                            extra.is_selected, state);
 966 }
 967
 968 HRESULT NativeThemeWin::PaintMenuCheckBackground(HDC hdc,
 969                                                  State state,
 970                                                  const gfx::Rect& rect) const {
 971   HANDLE handle = GetThemeHandle(MENU);
 972   if (!handle || !draw_theme_)
 973     return S_OK;  // Nothing to do for background.
 974
 975   int state_id = state == kDisabled ? MCB_DISABLED : MCB_NORMAL;
 976   RECT rect_win = rect.ToRECT();
 977   return draw_theme_(handle, hdc, MENU_POPUPCHECKBACKGROUND, state_id,
 978                      &rect_win, NULL);
 979 }
 980
 981 HRESULT NativeThemeWin::PaintMenuItemBackground(
 982     HDC hdc,
 983     State state,
 984     const gfx::Rect& rect,
 985     const MenuItemExtraParams& extra) const {
 986   HANDLE handle = GetThemeHandle(MENU);
 987   RECT rect_win = rect.ToRECT();
 988   int state_id = MPI_NORMAL;
 989   switch (state) {
 990     case kDisabled:
 991       state_id = extra.is_selected ? MPI_DISABLEDHOT : MPI_DISABLED;
 992       break;
 993     case kHovered:
 994       state_id = MPI_HOT;
 995       break;
 996     case kNormal:
 997       break;
 998     case kPressed:
 999     case kNumStates:
1000       NOTREACHED();
1001       break;
1002   }
1003
1004   if (handle && draw_theme_)
1005     return draw_theme_(handle, hdc, MENU_POPUPITEM, state_id, &rect_win, NULL);
1006
1007   if (extra.is_selected)
1008     FillRect(hdc, &rect_win, GetSysColorBrush(COLOR_HIGHLIGHT));
1009   return S_OK;
1010 }
1011
1012 HRESULT NativeThemeWin::PaintPushButton(HDC hdc,
1013                                         Part part,
1014                                         State state,
1015                                         const gfx::Rect& rect,
1016                                         const ButtonExtraParams& extra) const {
1017   int state_id = extra.is_default ? PBS_DEFAULTED : PBS_NORMAL;
1018   switch (state) {
1019     case kDisabled:
1020       state_id = PBS_DISABLED;
1021       break;
1022     case kHovered:
1023       state_id = PBS_HOT;
1024       break;
1025     case kNormal:
1026       break;
1027     case kPressed:
1028       state_id = PBS_PRESSED;
1029       break;
1030     case kNumStates:
1031       NOTREACHED();
1032       break;
1033   }
1034
1035   RECT rect_win = rect.ToRECT();
1036   return PaintButton(hdc, state, extra, BP_PUSHBUTTON, state_id, &rect_win);
1037 }
1038
1039 HRESULT NativeThemeWin::PaintRadioButton(HDC hdc,
1040                                          Part part,
1041                                          State state,
1042                                          const gfx::Rect& rect,
1043                                          const ButtonExtraParams& extra) const {
1044   int state_id = extra.checked ? RBS_CHECKEDNORMAL : RBS_UNCHECKEDNORMAL;
1045   switch (state) {
1046     case kDisabled:
1047       state_id = extra.checked ? RBS_CHECKEDDISABLED : RBS_UNCHECKEDDISABLED;
1048       break;
1049     case kHovered:
1050       state_id = extra.checked ? RBS_CHECKEDHOT : RBS_UNCHECKEDHOT;
1051       break;
1052     case kNormal:
1053       break;
1054     case kPressed:
1055       state_id = extra.checked ? RBS_CHECKEDPRESSED : RBS_UNCHECKEDPRESSED;
1056       break;
1057     case kNumStates:
1058       NOTREACHED();
1059       break;
1060   }
1061
1062   RECT rect_win = rect.ToRECT();
1063   return PaintButton(hdc, state, extra, BP_RADIOBUTTON, state_id, &rect_win);
1064 }
1065
1066 HRESULT NativeThemeWin::PaintCheckbox(HDC hdc,
1067                                       Part part,
1068                                       State state,
1069                                       const gfx::Rect& rect,
1070                                       const ButtonExtraParams& extra) const {
1071   int state_id = extra.checked ?
1072       CBS_CHECKEDNORMAL :
1073       (extra.indeterminate ? CBS_MIXEDNORMAL : CBS_UNCHECKEDNORMAL);
1074   switch (state) {
1075     case kDisabled:
1076       state_id = extra.checked ?
1077           CBS_CHECKEDDISABLED :
1078           (extra.indeterminate ? CBS_MIXEDDISABLED : CBS_UNCHECKEDDISABLED);
1079       break;
1080     case kHovered:
1081       state_id = extra.checked ?
1082           CBS_CHECKEDHOT :
1083           (extra.indeterminate ? CBS_MIXEDHOT : CBS_UNCHECKEDHOT);
1084       break;
1085     case kNormal:
1086       break;
1087     case kPressed:
1088       state_id = extra.checked ?
1089           CBS_CHECKEDPRESSED :
1090           (extra.indeterminate ? CBS_MIXEDPRESSED : CBS_UNCHECKEDPRESSED);
1091       break;
1092     case kNumStates:
1093       NOTREACHED();
1094       break;
1095   }
1096
1097   RECT rect_win = rect.ToRECT();
1098   return PaintButton(hdc, state, extra, BP_CHECKBOX, state_id, &rect_win);
1099 }
1100
1101 HRESULT NativeThemeWin::PaintMenuList(HDC hdc,
1102                                       State state,
1103                                       const gfx::Rect& rect,
1104                                       const MenuListExtraParams& extra) const {
1105   HANDLE handle = GetThemeHandle(MENULIST);
1106   RECT rect_win = rect.ToRECT();
1107   int state_id = CBXS_NORMAL;
1108   switch (state) {
1109     case kDisabled:
1110       state_id = CBXS_DISABLED;
1111       break;
1112     case kHovered:
1113       state_id = CBXS_HOT;
1114       break;
1115     case kNormal:
1116       break;
1117     case kPressed:
1118       state_id = CBXS_PRESSED;
1119       break;
1120     case kNumStates:
1121       NOTREACHED();
1122       break;
1123   }
1124
1125   if (handle && draw_theme_)
1126     return draw_theme_(handle, hdc, CP_DROPDOWNBUTTON, state_id, &rect_win,
1127                        NULL);
1128
1129   // Draw it manually.
1130   DrawFrameControl(hdc, &rect_win, DFC_SCROLL,
1131                    DFCS_SCROLLCOMBOBOX | extra.classic_state);
1132   return S_OK;
1133 }
1134
1135 HRESULT NativeThemeWin::PaintScrollbarArrow(
1136     HDC hdc,
1137     Part part,
1138     State state,
1139     const gfx::Rect& rect,
1140     const ScrollbarArrowExtraParams& extra) const {
1141   static const int state_id_matrix[4][kNumStates] = {
1142       {ABS_DOWNDISABLED, ABS_DOWNHOT, ABS_DOWNNORMAL, ABS_DOWNPRESSED},
1143       {ABS_LEFTDISABLED, ABS_LEFTHOT, ABS_LEFTNORMAL, ABS_LEFTPRESSED},
1144       {ABS_RIGHTDISABLED, ABS_RIGHTHOT, ABS_RIGHTNORMAL, ABS_RIGHTPRESSED},
1145       {ABS_UPDISABLED, ABS_UPHOT, ABS_UPNORMAL, ABS_UPPRESSED},
1146   };
1147   HANDLE handle = GetThemeHandle(SCROLLBAR);
1148   RECT rect_win = rect.ToRECT();
1149   if (handle && draw_theme_) {
1150     int index = part - kScrollbarDownArrow;
1151     DCHECK_GE(index, 0);
1152     DCHECK_LT(static_cast<size_t>(index), arraysize(state_id_matrix));
1153     int state_id = state_id_matrix[index][state];
1154
1155     // Hovering means that the cursor is over the scroolbar, but not over the
1156     // specific arrow itself.  We don't want to show it "hot" mode, but only
1157     // in "hover" mode.
1158     if (state == kHovered && extra.is_hovering) {
1159       switch (part) {
1160         case kScrollbarDownArrow:
1161           state_id = ABS_DOWNHOVER;
1162           break;
1163         case kScrollbarLeftArrow:
1164           state_id = ABS_LEFTHOVER;
1165           break;
1166         case kScrollbarRightArrow:
1167           state_id = ABS_RIGHTHOVER;
1168           break;
1169         case kScrollbarUpArrow:
1170           state_id = ABS_UPHOVER;
1171           break;
1172         default:
1173           NOTREACHED();
1174           break;
1175       }
1176     }
1177     return PaintScaledTheme(handle, hdc, SBP_ARROWBTN, state_id, rect);
1178   }
1179
1180   int classic_state = DFCS_SCROLLDOWN;
1181   switch (part) {
1182     case kScrollbarDownArrow:
1183       break;
1184     case kScrollbarLeftArrow:
1185       classic_state = DFCS_SCROLLLEFT;
1186       break;
1187     case kScrollbarRightArrow:
1188       classic_state = DFCS_SCROLLRIGHT;
1189       break;
1190     case kScrollbarUpArrow:
1191       classic_state = DFCS_SCROLLUP;
1192       break;
1193     default:
1194       NOTREACHED();
1195       break;
1196   }
1197   switch (state) {
1198     case kDisabled:
1199       classic_state |= DFCS_INACTIVE;
1200       break;
1201     case kHovered:
1202       classic_state |= DFCS_HOT;
1203       break;
1204     case kNormal:
1205       break;
1206     case kPressed:
1207       classic_state |= DFCS_PUSHED;
1208       break;
1209     case kNumStates:
1210       NOTREACHED();
1211       break;
1212   }
1213   DrawFrameControl(hdc, &rect_win, DFC_SCROLL, classic_state);
1214   return S_OK;
1215 }
1216
1217 HRESULT NativeThemeWin::PaintScrollbarThumb(
1218     HDC hdc,
1219     Part part,
1220     State state,
1221     const gfx::Rect& rect,
1222     const ScrollbarThumbExtraParams& extra) const {
1223   HANDLE handle = GetThemeHandle(SCROLLBAR);
1224   RECT rect_win = rect.ToRECT();
1225
1226   int part_id = SBP_THUMBBTNVERT;
1227   switch (part) {
1228     case kScrollbarHorizontalThumb:
1229       part_id = SBP_THUMBBTNHORZ;
1230       break;
1231     case kScrollbarVerticalThumb:
1232       break;
1233     case kScrollbarHorizontalGripper:
1234       part_id = SBP_GRIPPERHORZ;
1235       break;
1236     case kScrollbarVerticalGripper:
1237       part_id = SBP_GRIPPERVERT;
1238       break;
1239     default:
1240       NOTREACHED();
1241       break;
1242   }
1243
1244   int state_id = SCRBS_NORMAL;
1245   switch (state) {
1246     case kDisabled:
1247       state_id = SCRBS_DISABLED;
1248       break;
1249     case kHovered:
1250       state_id = extra.is_hovering ? SCRBS_HOVER : SCRBS_HOT;
1251       break;
1252     case kNormal:
1253       break;
1254     case kPressed:
1255       state_id = SCRBS_PRESSED;
1256       break;
1257     case kNumStates:
1258       NOTREACHED();
1259       break;
1260   }
1261
1262   if (handle && draw_theme_)
1263     return PaintScaledTheme(handle, hdc, part_id, state_id, rect);
1264
1265   // Draw it manually.
1266   if ((part_id == SBP_THUMBBTNHORZ) || (part_id == SBP_THUMBBTNVERT))
1267     DrawEdge(hdc, &rect_win, EDGE_RAISED, BF_RECT | BF_MIDDLE);
1268   // Classic mode doesn't have a gripper.
1269   return S_OK;
1270 }
1271
1272 HRESULT NativeThemeWin::PaintScrollbarTrack(
1273     SkCanvas* canvas,
1274     HDC hdc,
1275     Part part,
1276     State state,
1277     const gfx::Rect& rect,
1278     const ScrollbarTrackExtraParams& extra) const {
1279   HANDLE handle = GetThemeHandle(SCROLLBAR);
1280   RECT rect_win = rect.ToRECT();
1281
1282   const int part_id = extra.is_upper ?
1283       ((part == kScrollbarHorizontalTrack) ?
1284           SBP_UPPERTRACKHORZ : SBP_UPPERTRACKVERT) :
1285       ((part == kScrollbarHorizontalTrack) ?
1286           SBP_LOWERTRACKHORZ : SBP_LOWERTRACKVERT);
1287
1288   int state_id = SCRBS_NORMAL;
1289   switch (state) {
1290     case kDisabled:
1291       state_id = SCRBS_DISABLED;
1292       break;
1293     case kHovered:
1294       state_id = SCRBS_HOVER;
1295       break;
1296     case kNormal:
1297       break;
1298     case kPressed:
1299       state_id = SCRBS_PRESSED;
1300       break;
1301     case kNumStates:
1302       NOTREACHED();
1303       break;
1304   }
1305
1306   if (handle && draw_theme_)
1307     return draw_theme_(handle, hdc, part_id, state_id, &rect_win, NULL);
1308
1309   // Draw it manually.
1310   if ((system_colors_[COLOR_SCROLLBAR] != system_colors_[COLOR_3DFACE]) &&
1311       (system_colors_[COLOR_SCROLLBAR] != system_colors_[COLOR_WINDOW])) {
1312     FillRect(hdc, &rect_win, reinterpret_cast<HBRUSH>(COLOR_SCROLLBAR + 1));
1313   } else {
1314     SkPaint paint;
1315     RECT align_rect = gfx::Rect(extra.track_x, extra.track_y, extra.track_width,
1316                                 extra.track_height).ToRECT();
1317     SetCheckerboardShader(&paint, align_rect);
1318     canvas->drawIRect(skia::RECTToSkIRect(rect_win), paint);
1319   }
1320   if (extra.classic_state & DFCS_PUSHED)
1321     InvertRect(hdc, &rect_win);
1322   return S_OK;
1323 }
1324
1325 HRESULT NativeThemeWin::PaintSpinButton(
1326     HDC hdc,
1327     Part part,
1328     State state,
1329     const gfx::Rect& rect,
1330     const InnerSpinButtonExtraParams& extra) const {
1331   HANDLE handle = GetThemeHandle(SPIN);
1332   RECT rect_win = rect.ToRECT();
1333   int part_id = extra.spin_up ? SPNP_UP : SPNP_DOWN;
1334   int state_id = extra.spin_up ? UPS_NORMAL : DNS_NORMAL;
1335   switch (state) {
1336     case kDisabled:
1337       state_id = extra.spin_up ? UPS_DISABLED : DNS_DISABLED;
1338       break;
1339     case kHovered:
1340       state_id = extra.spin_up ? UPS_HOT : DNS_HOT;
1341       break;
1342     case kNormal:
1343       break;
1344     case kPressed:
1345       state_id = extra.spin_up ? UPS_PRESSED : DNS_PRESSED;
1346       break;
1347     case kNumStates:
1348       NOTREACHED();
1349       break;
1350   }
1351
1352   if (handle && draw_theme_)
1353     return draw_theme_(handle, hdc, part_id, state_id, &rect_win, NULL);
1354   DrawFrameControl(hdc, &rect_win, DFC_SCROLL, extra.classic_state);
1355   return S_OK;
1356 }
1357
1358 HRESULT NativeThemeWin::PaintTrackbar(
1359     SkCanvas* canvas,
1360     HDC hdc,
1361     Part part,
1362     State state,
1363     const gfx::Rect& rect,
1364     const TrackbarExtraParams& extra) const {
1365   const int part_id = extra.vertical ?
1366       ((part == kTrackbarTrack) ? TKP_TRACKVERT : TKP_THUMBVERT) :
1367       ((part == kTrackbarTrack) ? TKP_TRACK : TKP_THUMBBOTTOM);
1368
1369   int state_id = TUS_NORMAL;
1370   switch (state) {
1371     case kDisabled:
1372       state_id = TUS_DISABLED;
1373       break;
1374     case kHovered:
1375       state_id = TUS_HOT;
1376       break;
1377     case kNormal:
1378       break;
1379     case kPressed:
1380       state_id = TUS_PRESSED;
1381       break;
1382     case kNumStates:
1383       NOTREACHED();
1384       break;
1385   }
1386
1387   // Make the channel be 4 px thick in the center of the supplied rect.  (4 px
1388   // matches what XP does in various menus; GetThemePartSize() doesn't seem to
1389   // return good values here.)
1390   RECT rect_win = rect.ToRECT();
1391   RECT channel_rect = rect.ToRECT();
1392   const int channel_thickness = 4;
1393   if (part_id == TKP_TRACK) {
1394     channel_rect.top +=
1395         ((channel_rect.bottom - channel_rect.top - channel_thickness) / 2);
1396     channel_rect.bottom = channel_rect.top + channel_thickness;
1397   } else if (part_id == TKP_TRACKVERT) {
1398     channel_rect.left +=
1399         ((channel_rect.right - channel_rect.left - channel_thickness) / 2);
1400     channel_rect.right = channel_rect.left + channel_thickness;
1401   }  // else this isn't actually a channel, so |channel_rect| == |rect|.
1402
1403   HANDLE handle = GetThemeHandle(TRACKBAR);
1404   if (handle && draw_theme_)
1405     return draw_theme_(handle, hdc, part_id, state_id, &channel_rect, NULL);
1406
1407   // Classic mode, draw it manually.
1408   if ((part_id == TKP_TRACK) || (part_id == TKP_TRACKVERT)) {
1409     DrawEdge(hdc, &channel_rect, EDGE_SUNKEN, BF_RECT);
1410   } else if (part_id == TKP_THUMBVERT) {
1411     DrawEdge(hdc, &rect_win, EDGE_RAISED, BF_RECT | BF_SOFT | BF_MIDDLE);
1412   } else {
1413     // Split rect into top and bottom pieces.
1414     RECT top_section = rect.ToRECT();
1415     RECT bottom_section = rect.ToRECT();
1416     top_section.bottom -= ((bottom_section.right - bottom_section.left) / 2);
1417     bottom_section.top = top_section.bottom;
1418     DrawEdge(hdc, &top_section, EDGE_RAISED,
1419              BF_LEFT | BF_TOP | BF_RIGHT | BF_SOFT | BF_MIDDLE | BF_ADJUST);
1420
1421     // Split triangular piece into two diagonals.
1422     RECT& left_half = bottom_section;
1423     RECT right_half = bottom_section;
1424     right_half.left += ((bottom_section.right - bottom_section.left) / 2);
1425     left_half.right = right_half.left;
1426     DrawEdge(hdc, &left_half, EDGE_RAISED,
1427              BF_DIAGONAL_ENDTOPLEFT | BF_SOFT | BF_MIDDLE | BF_ADJUST);
1428     DrawEdge(hdc, &right_half, EDGE_RAISED,
1429              BF_DIAGONAL_ENDBOTTOMLEFT | BF_SOFT | BF_MIDDLE | BF_ADJUST);
1430
1431     // If the button is pressed, draw hatching.
1432     if (extra.classic_state & DFCS_PUSHED) {
1433       SkPaint paint;
1434       SetCheckerboardShader(&paint, rect_win);
1435
1436       // Fill all three pieces with the pattern.
1437       canvas->drawIRect(skia::RECTToSkIRect(top_section), paint);
1438
1439       SkScalar left_triangle_top = SkIntToScalar(left_half.top);
1440       SkScalar left_triangle_right = SkIntToScalar(left_half.right);
1441       SkPath left_triangle;
1442       left_triangle.moveTo(SkIntToScalar(left_half.left), left_triangle_top);
1443       left_triangle.lineTo(left_triangle_right, left_triangle_top);
1444       left_triangle.lineTo(left_triangle_right,
1445                            SkIntToScalar(left_half.bottom));
1446       left_triangle.close();
1447       canvas->drawPath(left_triangle, paint);
1448
1449       SkScalar right_triangle_left = SkIntToScalar(right_half.left);
1450       SkScalar right_triangle_top = SkIntToScalar(right_half.top);
1451       SkPath right_triangle;
1452       right_triangle.moveTo(right_triangle_left, right_triangle_top);
1453       right_triangle.lineTo(SkIntToScalar(right_half.right),
1454                             right_triangle_top);
1455       right_triangle.lineTo(right_triangle_left,
1456                             SkIntToScalar(right_half.bottom));
1457       right_triangle.close();
1458       canvas->drawPath(right_triangle, paint);
1459     }
1460   }
1461   return S_OK;
1462 }
1463
1464 HRESULT NativeThemeWin::PaintProgressBar(
1465     HDC hdc,
1466     const gfx::Rect& rect,
1467     const ProgressBarExtraParams& extra) const {
1468   // There is no documentation about the animation speed, frame-rate, nor
1469   // size of moving overlay of the indeterminate progress bar.
1470   // So we just observed real-world programs and guessed following parameters.
1471   const int kDeterminateOverlayPixelsPerSecond = 300;
1472   const int kDeterminateOverlayWidth = 120;
1473   const int kIndeterminateOverlayPixelsPerSecond =  175;
1474   const int kVistaIndeterminateOverlayWidth = 120;
1475   const int kXPIndeterminateOverlayWidth = 55;
1476   // The thickness of the bar frame inside |value_rect|
1477   const int kXPBarPadding = 3;
1478
1479   RECT bar_rect = rect.ToRECT();
1480   RECT value_rect = gfx::Rect(extra.value_rect_x,
1481                               extra.value_rect_y,
1482                               extra.value_rect_width,
1483                               extra.value_rect_height).ToRECT();
1484
1485   HANDLE handle = GetThemeHandle(PROGRESS);
1486   if (!handle || !draw_theme_ || !draw_theme_ex_) {
1487     FillRect(hdc, &bar_rect, GetSysColorBrush(COLOR_BTNFACE));
1488     FillRect(hdc, &value_rect, GetSysColorBrush(COLOR_BTNSHADOW));
1489     DrawEdge(hdc, &bar_rect, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
1490     return S_OK;
1491   }
1492
1493   draw_theme_(handle, hdc, PP_BAR, 0, &bar_rect, NULL);
1494
1495   bool pre_vista = base::win::GetVersion() < base::win::VERSION_VISTA;
1496   int bar_width = bar_rect.right - bar_rect.left;
1497   if (!extra.determinate) {
1498     // The glossy overlay for the indeterminate progress bar has a small pause
1499     // after each animation. We emulate this by adding an invisible margin the
1500     // animation has to traverse.
1501     int width_with_margin = bar_width + kIndeterminateOverlayPixelsPerSecond;
1502     int overlay_width = pre_vista ?
1503         kXPIndeterminateOverlayWidth : kVistaIndeterminateOverlayWidth;
1504     RECT overlay_rect = bar_rect;
1505     overlay_rect.left += ComputeAnimationProgress(
1506         width_with_margin, overlay_width, kIndeterminateOverlayPixelsPerSecond,
1507         extra.animated_seconds);
1508     overlay_rect.right = overlay_rect.left + overlay_width;
1509     if (pre_vista) {
1510       RECT shrunk_rect = InsetRect(&overlay_rect, kXPBarPadding);
1511       RECT shrunk_bar_rect = InsetRect(&bar_rect, kXPBarPadding);
1512       draw_theme_(handle, hdc, PP_CHUNK, 0, &shrunk_rect, &shrunk_bar_rect);
1513     } else {
1514       draw_theme_(handle, hdc, PP_MOVEOVERLAY, 0, &overlay_rect, &bar_rect);
1515     }
1516     return S_OK;
1517   }
1518
1519   // We care about the direction here because PP_CHUNK painting is asymmetric.
1520   // TODO(morrita): This RTL guess can be wrong.  We should pass in the
1521   // direction from WebKit.
1522   const DTBGOPTS value_draw_options = {
1523     sizeof(DTBGOPTS),
1524     (bar_rect.right == value_rect.right && bar_rect.left != value_rect.left) ?
1525         DTBG_MIRRORDC : 0u,
1526     bar_rect
1527   };
1528   if (pre_vista) {
1529     // On XP, the progress bar is chunk-style and has no glossy effect.  We need
1530     // to shrink the destination rect to fit the part inside the bar with an
1531     // appropriate margin.
1532     RECT shrunk_value_rect = InsetRect(&value_rect, kXPBarPadding);
1533     draw_theme_ex_(handle, hdc, PP_CHUNK, 0, &shrunk_value_rect,
1534                    &value_draw_options);
1535   } else  {
1536     // On Vista or later, the progress bar part has a single-block value part
1537     // and a glossy effect.  The value part has exactly same height as the bar
1538     // part, so we don't need to shrink the rect.
1539     draw_theme_ex_(handle, hdc, PP_FILL, 0, &value_rect, &value_draw_options);
1540
1541     RECT overlay_rect = value_rect;
1542     overlay_rect.left += ComputeAnimationProgress(
1543         bar_width, kDeterminateOverlayWidth, kDeterminateOverlayPixelsPerSecond,
1544         extra.animated_seconds);
1545     overlay_rect.right = overlay_rect.left + kDeterminateOverlayWidth;
1546     draw_theme_(handle, hdc, PP_MOVEOVERLAY, 0, &overlay_rect, &value_rect);
1547   }
1548   return S_OK;
1549 }
1550
1551 HRESULT NativeThemeWin::PaintWindowResizeGripper(HDC hdc,
1552                                                  const gfx::Rect& rect) const {
1553   HANDLE handle = GetThemeHandle(STATUS);
1554   RECT rect_win = rect.ToRECT();
1555   if (handle && draw_theme_) {
1556     // Paint the status bar gripper.  There doesn't seem to be a standard
1557     // gripper in Windows for the space between scrollbars.  This is pretty
1558     // close, but it's supposed to be painted over a status bar.
1559     return draw_theme_(handle, hdc, SP_GRIPPER, 0, &rect_win, NULL);
1560   }
1561
1562   // Draw a windows classic scrollbar gripper.
1563   DrawFrameControl(hdc, &rect_win, DFC_SCROLL, DFCS_SCROLLSIZEGRIP);
1564   return S_OK;
1565 }
1566
1567 HRESULT NativeThemeWin::PaintTabPanelBackground(HDC hdc,
1568                                                 const gfx::Rect& rect) const {
1569   HANDLE handle = GetThemeHandle(TAB);
1570   RECT rect_win = rect.ToRECT();
1571   if (handle && draw_theme_)
1572     return draw_theme_(handle, hdc, TABP_BODY, 0, &rect_win, NULL);
1573
1574   // Classic just renders a flat color background.
1575   FillRect(hdc, &rect_win, reinterpret_cast<HBRUSH>(COLOR_3DFACE + 1));
1576   return S_OK;
1577 }
1578
1579 HRESULT NativeThemeWin::PaintTextField(
1580     HDC hdc,
1581     Part part,
1582     State state,
1583     const gfx::Rect& rect,
1584     const TextFieldExtraParams& extra) const {
1585   int state_id = ETS_NORMAL;
1586   switch (state) {
1587     case kDisabled:
1588       state_id = ETS_DISABLED;
1589       break;
1590     case kHovered:
1591       state_id = ETS_HOT;
1592       break;
1593     case kNormal:
1594       if (extra.is_read_only)
1595         state_id = ETS_READONLY;
1596       else if (extra.is_focused)
1597         state_id = ETS_FOCUSED;
1598       break;
1599     case kPressed:
1600       state_id = ETS_SELECTED;
1601       break;
1602     case kNumStates:
1603       NOTREACHED();
1604       break;
1605   }
1606
1607   RECT rect_win = rect.ToRECT();
1608   return PaintTextField(hdc, EP_EDITTEXT, state_id, extra.classic_state,
1609                         &rect_win,
1610                         skia::SkColorToCOLORREF(extra.background_color),
1611                         extra.fill_content_area, extra.draw_edges);
1612 }
1613
1614 HRESULT NativeThemeWin::PaintTextField(HDC hdc,
1615                                        int part_id,
1616                                        int state_id,
1617                                        int classic_state,
1618                                        RECT* rect,
1619                                        COLORREF color,
1620                                        bool fill_content_area,
1621                                        bool draw_edges) const {
1622   // TODO(ojan): http://b/1210017 Figure out how to give the ability to
1623   // exclude individual edges from being drawn.
1624
1625   HANDLE handle = GetThemeHandle(TEXTFIELD);
1626   // TODO(mpcomplete): can we detect if the color is specified by the user,
1627   // and if not, just use the system color?
1628   // CreateSolidBrush() accepts a RGB value but alpha must be 0.
1629   base::win::ScopedGDIObject<HBRUSH> bg_brush(CreateSolidBrush(color));
1630   // DrawThemeBackgroundEx was introduced in XP SP2, so that it's possible
1631   // draw_theme_ex_ is NULL and draw_theme_ is non-null.
1632   if (!handle || (!draw_theme_ex_ && (!draw_theme_ || !draw_edges))) {
1633     // Draw it manually.
1634     if (draw_edges)
1635       DrawEdge(hdc, rect, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
1636
1637     if (fill_content_area) {
1638       FillRect(hdc, rect, (classic_state & DFCS_INACTIVE) ?
1639                    reinterpret_cast<HBRUSH>(COLOR_BTNFACE + 1) : bg_brush);
1640     }
1641     return S_OK;
1642   }
1643
1644   static const DTBGOPTS omit_border_options = {
1645     sizeof(DTBGOPTS),
1646     DTBG_OMITBORDER,
1647     { 0, 0, 0, 0 }
1648   };
1649   HRESULT hr = draw_theme_ex_ ?
1650     draw_theme_ex_(handle, hdc, part_id, state_id, rect,
1651                    draw_edges ? NULL : &omit_border_options) :
1652     draw_theme_(handle, hdc, part_id, state_id, rect, NULL);
1653
1654   // TODO(maruel): Need to be fixed if get_theme_content_rect_ is NULL.
1655   if (fill_content_area && get_theme_content_rect_) {
1656     RECT content_rect;
1657     hr = get_theme_content_rect_(handle, hdc, part_id, state_id, rect,
1658                                   &content_rect);
1659     FillRect(hdc, &content_rect, bg_brush);
1660   }
1661   return hr;
1662 }
1663
1664 HRESULT NativeThemeWin::PaintScaledTheme(HANDLE theme,
1665                                          HDC hdc,
1666                                          int part_id,
1667                                          int state_id,
1668                                          const gfx::Rect& rect) const {
1669   // Correct the scaling and positioning of sub-components such as scrollbar
1670   // arrows and thumb grippers in the event that the world transform applies
1671   // scaling (e.g. in high-DPI mode).
1672   XFORM save_transform;
1673   if (GetWorldTransform(hdc, &save_transform)) {
1674     float scale = save_transform.eM11;
1675     if (scale != 1 && save_transform.eM12 == 0) {
1676       ModifyWorldTransform(hdc, NULL, MWT_IDENTITY);
1677       gfx::Rect scaled_rect = gfx::ScaleToEnclosedRect(rect, scale);
1678       scaled_rect.Offset(save_transform.eDx, save_transform.eDy);
1679       RECT bounds = scaled_rect.ToRECT();
1680       HRESULT result = draw_theme_(theme, hdc, part_id, state_id, &bounds,
1681                                    NULL);
1682       SetWorldTransform(hdc, &save_transform);
1683       return result;
1684     }
1685   }
1686   RECT bounds = rect.ToRECT();
1687   return draw_theme_(theme, hdc, part_id, state_id, &bounds, NULL);
1688 }
1689
1690 // static
1691 NativeThemeWin::ThemeName NativeThemeWin::GetThemeName(Part part) {
1692   switch (part) {
1693     case kCheckbox:
1694     case kPushButton:
1695     case kRadio:
1696       return BUTTON;
1697     case kInnerSpinButton:
1698       return SPIN;
1699     case kMenuList:
1700     case kMenuCheck:
1701     case kMenuPopupArrow:
1702     case kMenuPopupGutter:
1703     case kMenuPopupSeparator:
1704       return MENU;
1705     case kProgressBar:
1706       return PROGRESS;
1707     case kScrollbarDownArrow:
1708     case kScrollbarLeftArrow:
1709     case kScrollbarRightArrow:
1710     case kScrollbarUpArrow:
1711     case kScrollbarHorizontalThumb:
1712     case kScrollbarVerticalThumb:
1713     case kScrollbarHorizontalTrack:
1714     case kScrollbarVerticalTrack:
1715       return SCROLLBAR;
1716     case kSliderTrack:
1717     case kSliderThumb:
1718       return TRACKBAR;
1719     case kTextField:
1720       return TEXTFIELD;
1721     case kWindowResizeGripper:
1722       return STATUS;
1723     case kComboboxArrow:
1724     case kMenuCheckBackground:
1725     case kMenuPopupBackground:
1726     case kMenuItemBackground:
1727     case kScrollbarHorizontalGripper:
1728     case kScrollbarVerticalGripper:
1729     case kScrollbarCorner:
1730     case kTabPanelBackground:
1731     case kTrackbarThumb:
1732     case kTrackbarTrack:
1733     case kMaxPart:
1734       NOTREACHED();
1735   }
1736   return LAST;
1737 }
1738
1739 // static
1740 int NativeThemeWin::GetWindowsPart(Part part,
1741                                    State state,
1742                                    const ExtraParams& extra) {
1743   switch (part) {
1744     case kCheckbox:
1745       return BP_CHECKBOX;
1746     case kMenuCheck:
1747       return MENU_POPUPCHECK;
1748     case kMenuPopupArrow:
1749       return MENU_POPUPSUBMENU;
1750     case kMenuPopupGutter:
1751       return MENU_POPUPGUTTER;
1752     case kMenuPopupSeparator:
1753       return MENU_POPUPSEPARATOR;
1754     case kPushButton:
1755       return BP_PUSHBUTTON;
1756     case kRadio:
1757       return BP_RADIOBUTTON;
1758     case kScrollbarDownArrow:
1759     case kScrollbarLeftArrow:
1760     case kScrollbarRightArrow:
1761     case kScrollbarUpArrow:
1762       return SBP_ARROWBTN;
1763     case kScrollbarHorizontalThumb:
1764       return SBP_THUMBBTNHORZ;
1765     case kScrollbarVerticalThumb:
1766       return SBP_THUMBBTNVERT;
1767     case kWindowResizeGripper:
1768       return SP_GRIPPER;
1769     case kComboboxArrow:
1770     case kInnerSpinButton:
1771     case kMenuList:
1772     case kMenuCheckBackground:
1773     case kMenuPopupBackground:
1774     case kMenuItemBackground:
1775     case kProgressBar:
1776     case kScrollbarHorizontalTrack:
1777     case kScrollbarVerticalTrack:
1778     case kScrollbarHorizontalGripper:
1779     case kScrollbarVerticalGripper:
1780     case kScrollbarCorner:
1781     case kSliderTrack:
1782     case kSliderThumb:
1783     case kTabPanelBackground:
1784     case kTextField:
1785     case kTrackbarThumb:
1786     case kTrackbarTrack:
1787     case kMaxPart:
1788       NOTREACHED();
1789   }
1790   return 0;
1791 }
1792
1793 int NativeThemeWin::GetWindowsState(Part part,
1794                                     State state,
1795                                     const ExtraParams& extra) {
1796   switch (part) {
1797     case kCheckbox:
1798       switch (state) {
1799         case kDisabled:
1800           return CBS_UNCHECKEDDISABLED;
1801         case kHovered:
1802           return CBS_UNCHECKEDHOT;
1803         case kNormal:
1804           return CBS_UNCHECKEDNORMAL;
1805         case kPressed:
1806           return CBS_UNCHECKEDPRESSED;
1807         case kNumStates:
1808           NOTREACHED();
1809           return 0;
1810       }
1811     case kMenuCheck:
1812       switch (state) {
1813         case kDisabled:
1814           return extra.menu_check.is_radio ?
1815               MC_BULLETDISABLED : MC_CHECKMARKDISABLED;
1816         case kHovered:
1817         case kNormal:
1818         case kPressed:
1819           return extra.menu_check.is_radio ?
1820               MC_BULLETNORMAL : MC_CHECKMARKNORMAL;
1821         case kNumStates:
1822           NOTREACHED();
1823           return 0;
1824       }
1825     case kMenuPopupArrow:
1826     case kMenuPopupGutter:
1827     case kMenuPopupSeparator:
1828       switch (state) {
1829         case kDisabled:
1830           return MBI_DISABLED;
1831         case kHovered:
1832           return MBI_HOT;
1833         case kNormal:
1834           return MBI_NORMAL;
1835         case kPressed:
1836           return MBI_PUSHED;
1837         case kNumStates:
1838           NOTREACHED();
1839           return 0;
1840       }
1841     case kPushButton:
1842       switch (state) {
1843         case kDisabled:
1844           return PBS_DISABLED;
1845         case kHovered:
1846           return PBS_HOT;
1847         case kNormal:
1848           return PBS_NORMAL;
1849         case kPressed:
1850           return PBS_PRESSED;
1851         case kNumStates:
1852           NOTREACHED();
1853           return 0;
1854       }
1855     case kRadio:
1856       switch (state) {
1857         case kDisabled:
1858           return RBS_UNCHECKEDDISABLED;
1859         case kHovered:
1860           return RBS_UNCHECKEDHOT;
1861         case kNormal:
1862           return RBS_UNCHECKEDNORMAL;
1863         case kPressed:
1864           return RBS_UNCHECKEDPRESSED;
1865         case kNumStates:
1866           NOTREACHED();
1867           return 0;
1868       }
1869     case kScrollbarDownArrow:
1870       switch (state) {
1871         case kDisabled:
1872           return ABS_DOWNDISABLED;
1873         case kHovered:
1874           // Mimic ScrollbarThemeChromiumWin.cpp in WebKit.
1875           return base::win::GetVersion() < base::win::VERSION_VISTA ?
1876               ABS_DOWNHOT : ABS_DOWNHOVER;
1877         case kNormal:
1878           return ABS_DOWNNORMAL;
1879         case kPressed:
1880           return ABS_DOWNPRESSED;
1881         case kNumStates:
1882           NOTREACHED();
1883           return 0;
1884       }
1885     case kScrollbarLeftArrow:
1886       switch (state) {
1887         case kDisabled:
1888           return ABS_LEFTDISABLED;
1889         case kHovered:
1890           // Mimic ScrollbarThemeChromiumWin.cpp in WebKit.
1891           return base::win::GetVersion() < base::win::VERSION_VISTA ?
1892               ABS_LEFTHOT : ABS_LEFTHOVER;
1893         case kNormal:
1894           return ABS_LEFTNORMAL;
1895         case kPressed:
1896           return ABS_LEFTPRESSED;
1897         case kNumStates:
1898           NOTREACHED();
1899           return 0;
1900       }
1901     case kScrollbarRightArrow:
1902       switch (state) {
1903         case kDisabled:
1904           return ABS_RIGHTDISABLED;
1905         case kHovered:
1906           // Mimic ScrollbarThemeChromiumWin.cpp in WebKit.
1907           return base::win::GetVersion() < base::win::VERSION_VISTA ?
1908               ABS_RIGHTHOT : ABS_RIGHTHOVER;
1909         case kNormal:
1910           return ABS_RIGHTNORMAL;
1911         case kPressed:
1912           return ABS_RIGHTPRESSED;
1913         case kNumStates:
1914           NOTREACHED();
1915           return 0;
1916       }
1917       break;
1918     case kScrollbarUpArrow:
1919       switch (state) {
1920         case kDisabled:
1921           return ABS_UPDISABLED;
1922         case kHovered:
1923           // Mimic ScrollbarThemeChromiumWin.cpp in WebKit.
1924           return base::win::GetVersion() < base::win::VERSION_VISTA ?
1925               ABS_UPHOT : ABS_UPHOVER;
1926         case kNormal:
1927           return ABS_UPNORMAL;
1928         case kPressed:
1929           return ABS_UPPRESSED;
1930         case kNumStates:
1931           NOTREACHED();
1932           return 0;
1933       }
1934       break;
1935     case kScrollbarHorizontalThumb:
1936     case kScrollbarVerticalThumb:
1937       switch (state) {
1938         case kDisabled:
1939           return SCRBS_DISABLED;
1940         case kHovered:
1941           // Mimic WebKit's behaviour in ScrollbarThemeChromiumWin.cpp.
1942           return base::win::GetVersion() < base::win::VERSION_VISTA ?
1943               SCRBS_HOT : SCRBS_HOVER;
1944         case kNormal:
1945           return SCRBS_NORMAL;
1946         case kPressed:
1947           return SCRBS_PRESSED;
1948         case kNumStates:
1949           NOTREACHED();
1950           return 0;
1951       }
1952     case kWindowResizeGripper:
1953       switch (state) {
1954         case kDisabled:
1955         case kHovered:
1956         case kNormal:
1957         case kPressed:
1958           return 1;  // gripper has no windows state
1959         case kNumStates:
1960           NOTREACHED();
1961           return 0;
1962       }
1963     case kComboboxArrow:
1964     case kInnerSpinButton:
1965     case kMenuList:
1966     case kMenuCheckBackground:
1967     case kMenuPopupBackground:
1968     case kMenuItemBackground:
1969     case kProgressBar:
1970     case kScrollbarHorizontalTrack:
1971     case kScrollbarVerticalTrack:
1972     case kScrollbarHorizontalGripper:
1973     case kScrollbarVerticalGripper:
1974     case kScrollbarCorner:
1975     case kSliderTrack:
1976     case kSliderThumb:
1977     case kTabPanelBackground:
1978     case kTextField:
1979     case kTrackbarThumb:
1980     case kTrackbarTrack:
1981     case kMaxPart:
1982       NOTREACHED();
1983   }
1984   return 0;
1985 }
1986
1987 HRESULT NativeThemeWin::GetThemeInt(ThemeName theme,
1988                                     int part_id,
1989                                     int state_id,
1990                                     int prop_id,
1991                                     int *value) const {
1992   HANDLE handle = GetThemeHandle(theme);
1993   return (handle && get_theme_int_) ?
1994       get_theme_int_(handle, part_id, state_id, prop_id, value) : E_NOTIMPL;
1995 }
1996
1997 HRESULT NativeThemeWin::PaintFrameControl(HDC hdc,
1998                                           const gfx::Rect& rect,
1999                                           UINT type,
2000                                           UINT state,
2001                                           bool is_selected,
2002                                           State control_state) const {
2003   const int width = rect.width();
2004   const int height = rect.height();
2005
2006   // DrawFrameControl for menu arrow/check wants a monochrome bitmap.
2007   base::win::ScopedBitmap mask_bitmap(CreateBitmap(width, height, 1, 1, NULL));
2008
2009   if (mask_bitmap == NULL)
2010     return E_OUTOFMEMORY;
2011
2012   base::win::ScopedCreateDC bitmap_dc(CreateCompatibleDC(NULL));
2013   base::win::ScopedSelectObject select_bitmap(bitmap_dc.Get(), mask_bitmap);
2014   RECT local_rect = { 0, 0, width, height };
2015   DrawFrameControl(bitmap_dc.Get(), &local_rect, type, state);
2016
2017   // We're going to use BitBlt with a b&w mask. This results in using the dest
2018   // dc's text color for the black bits in the mask, and the dest dc's
2019   // background color for the white bits in the mask. DrawFrameControl draws the
2020   // check in black, and the background in white.
2021   int bg_color_key = COLOR_MENU;
2022   int text_color_key = COLOR_MENUTEXT;
2023   switch (control_state) {
2024     case kDisabled:
2025       bg_color_key = is_selected ? COLOR_HIGHLIGHT : COLOR_MENU;
2026       text_color_key = COLOR_GRAYTEXT;
2027       break;
2028     case kHovered:
2029       bg_color_key = COLOR_HIGHLIGHT;
2030       text_color_key = COLOR_HIGHLIGHTTEXT;
2031       break;
2032     case kNormal:
2033       break;
2034     case kPressed:
2035     case kNumStates:
2036       NOTREACHED();
2037       break;
2038   }
2039   COLORREF old_bg_color = SetBkColor(hdc, GetSysColor(bg_color_key));
2040   COLORREF old_text_color = SetTextColor(hdc, GetSysColor(text_color_key));
2041   BitBlt(hdc, rect.x(), rect.y(), width, height, bitmap_dc.Get(), 0, 0,
2042          SRCCOPY);
2043   SetBkColor(hdc, old_bg_color);
2044   SetTextColor(hdc, old_text_color);
2045
2046   return S_OK;
2047 }
2048
2049 HANDLE NativeThemeWin::GetThemeHandle(ThemeName theme_name) const {
2050   if (!open_theme_ || theme_name < 0 || theme_name >= LAST)
2051     return 0;
2052
2053   if (theme_handles_[theme_name])
2054     return theme_handles_[theme_name];
2055
2056   // Not found, try to load it.
2057   HANDLE handle = 0;
2058   switch (theme_name) {
2059   case BUTTON:
2060     handle = open_theme_(NULL, L"Button");
2061     break;
2062   case LIST:
2063     handle = open_theme_(NULL, L"Listview");
2064     break;
2065   case MENU:
2066     handle = open_theme_(NULL, L"Menu");
2067     break;
2068   case MENULIST:
2069     handle = open_theme_(NULL, L"Combobox");
2070     break;
2071   case SCROLLBAR:
2072     handle = open_theme_(NULL, L"Scrollbar");
2073     break;
2074   case STATUS:
2075     handle = open_theme_(NULL, L"Status");
2076     break;
2077   case TAB:
2078     handle = open_theme_(NULL, L"Tab");
2079     break;
2080   case TEXTFIELD:
2081     handle = open_theme_(NULL, L"Edit");
2082     break;
2083   case TRACKBAR:
2084     handle = open_theme_(NULL, L"Trackbar");
2085     break;
2086   case WINDOW:
2087     handle = open_theme_(NULL, L"Window");
2088     break;
2089   case PROGRESS:
2090     handle = open_theme_(NULL, L"Progress");
2091     break;
2092   case SPIN:
2093     handle = open_theme_(NULL, L"Spin");
2094     break;
2095   case LAST:
2096     NOTREACHED();
2097     break;
2098   }
2099   theme_handles_[theme_name] = handle;
2100   return handle;
2101 }
2102
2103 }  // namespace ui