ui/native_theme/native_theme_aurawin.cc

   1 // Copyright 2014 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_aurawin.h"
   6
   7 #include "third_party/skia/include/core/SkCanvas.h"
   8 #include "ui/native_theme/common_theme.h"
   9 #include "ui/native_theme/native_theme_win.h"
  10
  11 namespace ui {
  12
  13 namespace {
  14
  15 bool IsScrollbarPart(NativeTheme::Part part) {
  16   switch (part) {
  17     case NativeTheme::kScrollbarDownArrow:
  18     case NativeTheme::kScrollbarLeftArrow:
  19     case NativeTheme::kScrollbarRightArrow:
  20     case NativeTheme::kScrollbarUpArrow:
  21     case NativeTheme::kScrollbarHorizontalThumb:
  22     case NativeTheme::kScrollbarVerticalThumb:
  23     case NativeTheme::kScrollbarHorizontalTrack:
  24     case NativeTheme::kScrollbarVerticalTrack:
  25     case NativeTheme::kScrollbarHorizontalGripper:
  26     case NativeTheme::kScrollbarVerticalGripper:
  27     case NativeTheme::kScrollbarCorner:
  28       return true;
  29     default:
  30       return false;
  31   }
  32 }
  33
  34 }  // namespace
  35
  36 // static
  37 NativeTheme* NativeTheme::instance() {
  38   return NativeThemeAuraWin::instance();
  39 }
  40
  41 // static
  42 NativeThemeAura* NativeThemeAura::instance() {
  43   return NativeThemeAuraWin::instance();
  44 }
  45
  46 // static
  47 NativeThemeAuraWin* NativeThemeAuraWin::instance() {
  48   CR_DEFINE_STATIC_LOCAL(NativeThemeAuraWin, s_native_theme, ());
  49   return &s_native_theme;
  50 }
  51
  52 NativeThemeAuraWin::NativeThemeAuraWin() {
  53 }
  54
  55 NativeThemeAuraWin::~NativeThemeAuraWin() {
  56 }
  57
  58 void NativeThemeAuraWin::Paint(SkCanvas* canvas,
  59                                Part part,
  60                                State state,
  61                                const gfx::Rect& rect,
  62                                const ExtraParams& extra) const {
  63   if (IsScrollbarPart(part) &&
  64       NativeThemeWin::instance()->IsUsingHighContrastTheme()) {
  65     NativeThemeWin::instance()->Paint(canvas, part, state, rect, extra);
  66     return;
  67   }
  68
  69   NativeThemeAura::Paint(canvas, part, state, rect, extra);
  70 }
  71
  72 gfx::Size NativeThemeAuraWin::GetPartSize(Part part,
  73                                           State state,
  74                                           const ExtraParams& extra) const {
  75   gfx::Size part_size = CommonThemeGetPartSize(part, state, extra);
  76   if (!part_size.IsEmpty())
  77     return part_size;
  78
  79   // We want aura on windows to use the same size for scrollbars as we would in
  80   // the native theme.
  81   if (IsScrollbarPart(part))
  82     return NativeThemeWin::instance()->GetPartSize(part, state, extra);
  83
  84   return NativeThemeAura::GetPartSize(part, state, extra);
  85 }
  86
  87 }  // namespace ui