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   }
  30   return false;
  31 }
  32
  33 }  // namespace
  34
  35 // static
  36 NativeTheme* NativeTheme::instance() {
  37   return NativeThemeAuraWin::instance();
  38 }
  39
  40 // static
  41 NativeThemeAura* NativeThemeAura::instance() {
  42   return NativeThemeAuraWin::instance();
  43 }
  44
  45 // static
  46 NativeThemeAuraWin* NativeThemeAuraWin::instance() {
  47   CR_DEFINE_STATIC_LOCAL(NativeThemeAuraWin, s_native_theme, ());
  48   return &s_native_theme;
  49 }
  50
  51 NativeThemeAuraWin::NativeThemeAuraWin() {
  52 }
  53
  54 NativeThemeAuraWin::~NativeThemeAuraWin() {
  55 }
  56
  57 void NativeThemeAuraWin::Paint(SkCanvas* canvas,
  58                                Part part,
  59                                State state,
  60                                const gfx::Rect& rect,
  61                                const ExtraParams& extra) const {
  62   if (IsScrollbarPart(part) &&
  63       NativeThemeWin::instance()->IsUsingHighContrastTheme()) {
  64     NativeThemeWin::instance()->Paint(canvas, part, state, rect, extra);
  65     return;
  66   }
  67
  68   NativeThemeAura::Paint(canvas, part, state, rect, extra);
  69 }
  70
  71 gfx::Size NativeThemeAuraWin::GetPartSize(Part part,
  72                                           State state,
  73                                           const ExtraParams& extra) const {
  74   gfx::Size part_size = CommonThemeGetPartSize(part, state, extra);
  75   if (!part_size.IsEmpty())
  76     return part_size;
  77
  78   // We want aura on windows to use the same size for scrollbars as we would in
  79   // the native theme.
  80   if (IsScrollbarPart(part))
  81     return NativeThemeWin::instance()->GetPartSize(part, state, extra);
  82
  83   return NativeThemeAura::GetPartSize(part, state, extra);
  84 }
  85
  86 }  // namespace ui