tb_widget_animation.h

// ================================================================================
// ==      This file is a part of Turbo Badger. (C) 2011-2014, Emil Segerås      ==
// ==                     See tb_core.h for more information.                    ==
// ================================================================================

#ifndef TB_WIDGET_ANIMATION_H
#define TB_WIDGET_ANIMATION_H

#include "tb_widgets_listener.h"
#include "animation/tb_animation.h"

namespace tb {

#define TB_ALMOST_ZERO_OPACITY 0.001f

class TBWidgetAnimationObject : public TBAnimationObject, public TBLinkOf<TBWidgetAnimationObject>
{
public:
    // For safe typecasting
    TBOBJECT_SUBCLASS(TBWidgetAnimationObject, TBAnimationObject);

    TBWidgetAnimationObject(TBWidget *widget);
    virtual ~TBWidgetAnimationObject();
public:
    TBWidget *m_widget;
};

class TBWidgetAnimationOpacity : public TBWidgetAnimationObject
{
public:
    // For safe typecasting
    TBOBJECT_SUBCLASS(TBWidgetAnimationOpacity, TBWidgetAnimationObject);

    TBWidgetAnimationOpacity(TBWidget *widget, float src_opacity, float dst_opacity, bool die);
    virtual void OnAnimationStart();
    virtual void OnAnimationUpdate(float progress);
    virtual void OnAnimationStop(bool aborted);
private:
    float m_src_opacity;
    float m_dst_opacity;
    bool m_die;
};

class TBWidgetAnimationRect : public TBWidgetAnimationObject
{
public:
    // For safe typecasting
    TBOBJECT_SUBCLASS(TBWidgetAnimationRect, TBWidgetAnimationObject);

    enum MODE {
        MODE_SRC_TO_DST,
        MODE_DELTA_IN,
        MODE_DELTA_OUT
    };
    TBWidgetAnimationRect(TBWidget *widget, const TBRect &src_rect, const TBRect &dst_rect);
    TBWidgetAnimationRect(TBWidget *widget, const TBRect &delta_rect, MODE mode);
    virtual void OnAnimationStart();
    virtual void OnAnimationUpdate(float progress);
    virtual void OnAnimationStop(bool aborted);
private:
    TBRect m_src_rect;
    TBRect m_dst_rect;
    TBRect m_delta_rect;
    MODE m_mode;
};

class TBWidgetsAnimationManager : public TBWidgetListener
{
public:
    static void Init();

    static void Shutdown();

    static void AbortAnimations(TBWidget *widget);

    static void AbortAnimations(TBWidget *widget, TB_TYPE_ID type_id);

private:
    // == TBWidgetListener ==================
    virtual void OnWidgetDelete(TBWidget *widget);
    virtual bool OnWidgetDying(TBWidget *widget);
    virtual void OnWidgetAdded(TBWidget *parent, TBWidget *child);
    virtual void OnWidgetRemove(TBWidget *parent, TBWidget *child);
};

} // namespace tb

#endif // TB_WIDGET_ANIMATION_H