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// Copyright (c) 2010 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.
#ifndef VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
#define VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
#include "app/animation.h"
#include "views/controls/button/button.h"
class ThrobAnimation;
namespace views {
// A button with custom rendering. The common base class of ImageButton and
// TextButton.
// Note that this type of button is not focusable by default and will not be
// part of the focus chain. Call SetFocusable(true) to make it part of the
// focus chain.
class CustomButton : public Button,
public AnimationDelegate {
public:
virtual ~CustomButton();
// Possible states
enum ButtonState {
BS_NORMAL = 0,
BS_HOT,
BS_PUSHED,
BS_DISABLED,
BS_COUNT
};
// Get/sets the current display state of the button.
ButtonState state() const { return state_; }
void SetState(ButtonState state);
// Starts throbbing. See HoverAnimation for a description of cycles_til_stop.
void StartThrobbing(int cycles_til_stop);
// Set how long the hover animation will last for.
void SetAnimationDuration(int duration);
// Sets whether or not to show the highlighed (i.e. hot) state. Default true.
void SetShowHighlighted(bool show_highlighted);
// Overridden from View:
virtual void SetEnabled(bool enabled);
virtual bool IsEnabled() const;
virtual bool IsFocusable() const;
void set_triggerable_event_flags(int triggerable_event_flags) {
triggerable_event_flags_ = triggerable_event_flags;
}
int triggerable_event_flags() const {
return triggerable_event_flags_;
}
protected:
// Construct the Button with a Listener. See comment for Button's ctor.
explicit CustomButton(ButtonListener* listener);
// Returns true if the event is one that can trigger notifying the listener.
// This implementation returns true if the left mouse button is down.
virtual bool IsTriggerableEvent(const MouseEvent& e);
// Overridden from View:
virtual bool AcceleratorPressed(const Accelerator& accelerator);
virtual bool OnMousePressed(const MouseEvent& e);
virtual bool OnMouseDragged(const MouseEvent& e);
virtual void OnMouseReleased(const MouseEvent& e, bool canceled);
virtual void OnMouseEntered(const MouseEvent& e);
virtual void OnMouseMoved(const MouseEvent& e);
virtual void OnMouseExited(const MouseEvent& e);
virtual bool OnKeyPressed(const KeyEvent& e);
virtual bool OnKeyReleased(const KeyEvent& e);
virtual void OnDragDone();
virtual void ShowContextMenu(const gfx::Point& p, bool is_mouse_gesture);
virtual void ViewHierarchyChanged(bool is_add, View *parent, View *child);
virtual void SetHotTracked(bool flag);
virtual bool IsHotTracked() const;
virtual void WillLoseFocus();
// Overridden from AnimationDelegate:
virtual void AnimationProgressed(const Animation* animation);
// Returns true if the button should become pressed when the user
// holds the mouse down over the button. For this implementation,
// we simply return IsTriggerableEvent(e).
virtual bool ShouldEnterPushedState(const MouseEvent& e);
// The button state (defined in implementation)
ButtonState state_;
// Hover animation.
scoped_ptr<ThrobAnimation> hover_animation_;
private:
// Set / test whether the button is highlighted (in the hover state).
void SetHighlighted(bool highlighted);
bool IsHighlighted() const;
// Returns whether the button is pushed.
bool IsPushed() const;
// Should we animate when the state changes? Defaults to true, but false while
// throbbing.
bool animate_on_state_change_;
// Whether or not to show the highlighted (i.e. hot) state.
bool show_highlighted_;
// Mouse event flags which can trigger button actions.
int triggerable_event_flags_;
DISALLOW_COPY_AND_ASSIGN(CustomButton);
};
} // namespace views
#endif // VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
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