ui/views/controls/button/checkbox.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/views/controls/button/checkbox.h"
   6
   7 #include "ui/accessibility/ax_view_state.h"
   8 #include "ui/base/resource/resource_bundle.h"
   9 #include "ui/resources/grit/ui_resources.h"
  10 #include "ui/views/controls/button/label_button_border.h"
  11 #include "ui/views/painter.h"
  12 #include "ui/views/resources/grit/views_resources.h"
  13
  14 namespace views {
  15
  16 // static
  17 const char Checkbox::kViewClassName[] = "Checkbox";
  18
  19 Checkbox::Checkbox(const base::string16& label)
  20     : LabelButton(NULL, label),
  21       checked_(false) {
  22   SetHorizontalAlignment(gfx::ALIGN_LEFT);
  23   scoped_ptr<LabelButtonBorder> button_border(new LabelButtonBorder());
  24   // Inset the trailing side by a couple pixels for the focus border.
  25   button_border->set_insets(gfx::Insets(0, 0, 0, 2));
  26   SetBorder(button_border.Pass());
  27   SetFocusable(true);
  28
  29   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  30
  31   // Unchecked/Unfocused images.
  32   SetCustomImage(false, false, STATE_NORMAL,
  33                  *rb.GetImageSkiaNamed(IDR_CHECKBOX));
  34   SetCustomImage(false, false, STATE_HOVERED,
  35                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_HOVER));
  36   SetCustomImage(false, false, STATE_PRESSED,
  37                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_PRESSED));
  38   SetCustomImage(false, false, STATE_DISABLED,
  39                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_DISABLED));
  40
  41   // Checked/Unfocused images.
  42   SetCustomImage(true, false, STATE_NORMAL,
  43                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_CHECKED));
  44   SetCustomImage(true, false, STATE_HOVERED,
  45                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_CHECKED_HOVER));
  46   SetCustomImage(true, false, STATE_PRESSED,
  47                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_CHECKED_PRESSED));
  48   SetCustomImage(true, false, STATE_DISABLED,
  49                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_CHECKED_DISABLED));
  50
  51   // Unchecked/Focused images.
  52   SetCustomImage(false, true, STATE_NORMAL,
  53                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED));
  54   SetCustomImage(false, true, STATE_HOVERED,
  55                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED_HOVER));
  56   SetCustomImage(false, true, STATE_PRESSED,
  57                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED_PRESSED));
  58
  59   // Checked/Focused images.
  60   SetCustomImage(true, true, STATE_NORMAL,
  61                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED_CHECKED));
  62   SetCustomImage(true, true, STATE_HOVERED,
  63                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED_CHECKED_HOVER));
  64   SetCustomImage(true, true, STATE_PRESSED,
  65                  *rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED_CHECKED_PRESSED));
  66
  67   // Limit the checkbox height to match the legacy appearance.
  68   const gfx::Size preferred_size(LabelButton::GetPreferredSize());
  69   SetMinSize(gfx::Size(0, preferred_size.height() + 4));
  70 }
  71
  72 Checkbox::~Checkbox() {
  73 }
  74
  75 void Checkbox::SetChecked(bool checked) {
  76   checked_ = checked;
  77   UpdateImage();
  78 }
  79
  80 void Checkbox::Layout() {
  81   LabelButton::Layout();
  82
  83   // Construct a focus painter that only surrounds the label area.
  84   gfx::Rect rect = label()->GetMirroredBounds();
  85   rect.Inset(-2, 3);
  86   SetFocusPainter(Painter::CreateDashedFocusPainterWithInsets(
  87                       gfx::Insets(rect.y(), rect.x(),
  88                                   height() - rect.bottom(),
  89                                   width() - rect.right())));
  90 }
  91
  92 const char* Checkbox::GetClassName() const {
  93   return kViewClassName;
  94 }
  95
  96 void Checkbox::GetAccessibleState(ui::AXViewState* state) {
  97   LabelButton::GetAccessibleState(state);
  98   state->role = ui::AX_ROLE_CHECK_BOX;
  99   if (checked())
 100     state->AddStateFlag(ui::AX_STATE_CHECKED);
 101 }
 102
 103 void Checkbox::OnFocus() {
 104   LabelButton::OnFocus();
 105   UpdateImage();
 106 }
 107
 108 void Checkbox::OnBlur() {
 109   LabelButton::OnBlur();
 110   UpdateImage();
 111 }
 112
 113 const gfx::ImageSkia& Checkbox::GetImage(ButtonState for_state) {
 114   const size_t checked_index = checked_ ? 1 : 0;
 115   const size_t focused_index = HasFocus() ? 1 : 0;
 116   if (for_state != STATE_NORMAL &&
 117       images_[checked_index][focused_index][for_state].isNull())
 118     return images_[checked_index][focused_index][STATE_NORMAL];
 119   return images_[checked_index][focused_index][for_state];
 120 }
 121
 122 void Checkbox::SetCustomImage(bool checked,
 123                               bool focused,
 124                               ButtonState for_state,
 125                               const gfx::ImageSkia& image) {
 126   const size_t checked_index = checked ? 1 : 0;
 127   const size_t focused_index = focused ? 1 : 0;
 128   images_[checked_index][focused_index][for_state] = image;
 129   UpdateImage();
 130 }
 131
 132 void Checkbox::NotifyClick(const ui::Event& event) {
 133   SetChecked(!checked());
 134   LabelButton::NotifyClick(event);
 135 }
 136
 137 ui::NativeTheme::Part Checkbox::GetThemePart() const {
 138   return ui::NativeTheme::kCheckbox;
 139 }
 140
 141 void Checkbox::GetExtraParams(ui::NativeTheme::ExtraParams* params) const {
 142   LabelButton::GetExtraParams(params);
 143   params->button.checked = checked_;
 144 }
 145
 146 }  // namespace views