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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/views/controls/button/checkbox.h"
#include "ui/accessibility/ax_view_state.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/resources/grit/ui_resources.h"
#include "ui/views/controls/button/label_button_border.h"
#include "ui/views/painter.h"
namespace views {
// static
const char Checkbox::kViewClassName[] = "Checkbox";
Checkbox::Checkbox(const base::string16& label)
: LabelButton(NULL, label),
checked_(false) {
SetHorizontalAlignment(gfx::ALIGN_LEFT);
scoped_ptr<LabelButtonBorder> button_border(new LabelButtonBorder(style()));
button_border->SetPainter(false, STATE_HOVERED, NULL);
button_border->SetPainter(false, STATE_PRESSED, NULL);
// Inset the trailing side by a couple pixels for the focus border.
button_border->set_insets(gfx::Insets(0, 0, 0, 2));
SetBorder(button_border.Pass());
SetFocusable(true);
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
// Unchecked/Unfocused images.
SetCustomImage(false, false, STATE_NORMAL,
*rb.GetImageSkiaNamed(IDR_CHECKBOX));
SetCustomImage(false, false, STATE_HOVERED,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_HOVER));
SetCustomImage(false, false, STATE_PRESSED,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_PRESSED));
SetCustomImage(false, false, STATE_DISABLED,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_DISABLED));
// Checked/Unfocused images.
SetCustomImage(true, false, STATE_NORMAL,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_CHECKED));
SetCustomImage(true, false, STATE_HOVERED,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_CHECKED_HOVER));
SetCustomImage(true, false, STATE_PRESSED,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_CHECKED_PRESSED));
SetCustomImage(true, false, STATE_DISABLED,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_CHECKED_DISABLED));
// Unchecked/Focused images.
SetCustomImage(false, true, STATE_NORMAL,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED));
SetCustomImage(false, true, STATE_HOVERED,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED_HOVER));
SetCustomImage(false, true, STATE_PRESSED,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED_PRESSED));
// Checked/Focused images.
SetCustomImage(true, true, STATE_NORMAL,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED_CHECKED));
SetCustomImage(true, true, STATE_HOVERED,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED_CHECKED_HOVER));
SetCustomImage(true, true, STATE_PRESSED,
*rb.GetImageSkiaNamed(IDR_CHECKBOX_FOCUSED_CHECKED_PRESSED));
// Limit the checkbox height to match the legacy appearance.
const gfx::Size preferred_size(LabelButton::GetPreferredSize());
SetMinSize(gfx::Size(0, preferred_size.height() + 4));
}
Checkbox::~Checkbox() {
}
void Checkbox::SetChecked(bool checked) {
checked_ = checked;
UpdateImage();
}
void Checkbox::Layout() {
LabelButton::Layout();
// Construct a focus painter that only surrounds the label area.
gfx::Rect rect = label()->GetMirroredBounds();
rect.Inset(-2, 3);
SetFocusPainter(Painter::CreateDashedFocusPainterWithInsets(
gfx::Insets(rect.y(), rect.x(),
height() - rect.bottom(),
width() - rect.right())));
}
const char* Checkbox::GetClassName() const {
return kViewClassName;
}
void Checkbox::GetAccessibleState(ui::AXViewState* state) {
LabelButton::GetAccessibleState(state);
state->role = ui::AX_ROLE_CHECK_BOX;
if (checked())
state->AddStateFlag(ui::AX_STATE_CHECKED);
}
void Checkbox::OnFocus() {
LabelButton::OnFocus();
UpdateImage();
}
void Checkbox::OnBlur() {
LabelButton::OnBlur();
UpdateImage();
}
const gfx::ImageSkia& Checkbox::GetImage(ButtonState for_state) {
const size_t checked_index = checked_ ? 1 : 0;
const size_t focused_index = HasFocus() ? 1 : 0;
if (for_state != STATE_NORMAL &&
images_[checked_index][focused_index][for_state].isNull())
return images_[checked_index][focused_index][STATE_NORMAL];
return images_[checked_index][focused_index][for_state];
}
void Checkbox::SetCustomImage(bool checked,
bool focused,
ButtonState for_state,
const gfx::ImageSkia& image) {
const size_t checked_index = checked ? 1 : 0;
const size_t focused_index = focused ? 1 : 0;
images_[checked_index][focused_index][for_state] = image;
UpdateImage();
}
void Checkbox::NotifyClick(const ui::Event& event) {
SetChecked(!checked());
LabelButton::NotifyClick(event);
}
ui::NativeTheme::Part Checkbox::GetThemePart() const {
return ui::NativeTheme::kCheckbox;
}
void Checkbox::GetExtraParams(ui::NativeTheme::ExtraParams* params) const {
LabelButton::GetExtraParams(params);
params->button.checked = checked_;
}
} // namespace views
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