aseprite/src/ui/button.h

// ASEPRITE gui library
// Copyright (C) 2001-2012  David Capello
//
// This source file is distributed under a BSD-like license, please
// read LICENSE.txt for more information.

#ifndef UI_BUTTON_H_INCLUDED
#define UI_BUTTON_H_INCLUDED

#include "base/compiler_specific.h"
#include "base/signal.h"
#include "ui/widget.h"

#include <vector>

struct BITMAP;

namespace ui {

  class Event;

  class IButtonIcon
  {
  public:
    virtual ~IButtonIcon() { }
    virtual void destroy() = 0;
    virtual int getWidth() = 0;
    virtual int getHeight() = 0;
    virtual BITMAP* getNormalIcon() = 0;
    virtual BITMAP* getSelectedIcon() = 0;
    virtual BITMAP* getDisabledIcon() = 0;
    virtual int getIconAlign() = 0;
  };

  // Generic button
  class ButtonBase : public Widget
  {
  public:
    ButtonBase(const char* text,
               int type,
               int behaviorType,
               int drawType);
    virtual ~ButtonBase();

    int getBehaviorType() const;
    int getDrawType() const;

    // Sets the interface used to get icons for the button depending its
    // state. This interface is deleted automatically in the ButtonBase dtor.
    void setIconInterface(IButtonIcon* iconInterface);

    // Used by the current theme to draw the button icon.
    IButtonIcon* getIconInterface() const { return m_iconInterface; }

    // Signals
    Signal1<void, Event&> Click;

  protected:
    // Events
    bool onProcessMessage(Message* msg) OVERRIDE;
    void onPreferredSize(PreferredSizeEvent& ev) OVERRIDE;
    void onPaint(PaintEvent& ev) OVERRIDE;

    // New events
    virtual void onClick(Event& ev);

  private:
    void generateButtonSelectSignal();

    bool m_pressedStatus;
    int m_behaviorType;
    int m_drawType;
    IButtonIcon* m_iconInterface;

  protected:
    bool m_handleSelect;
  };

  // Pushable button to execute commands
  class Button : public ButtonBase
  {
  public:
    Button(const char* text);
  };

  // Check boxes
  class CheckBox : public ButtonBase
  {
  public:
    CheckBox(const char* text, int drawType = JI_CHECK);
  };

  // Radio buttons
  class RadioButton : public ButtonBase
  {
  public:
    RadioButton(const char* text, int radioGroup, int drawType = JI_RADIO);

    int getRadioGroup() const;
    void setRadioGroup(int radioGroup);

    void deselectRadioGroup();

  protected:
    void onSelect() OVERRIDE;

  private:
    int m_radioGroup;
  };

} // namespace ui

#endif