CzUITextView.h

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// 
//
// AppEasy SDK - Cross Platform Multi-purpose Game and App Engine
//
// Developed by Matthew Hopwood of Pocketeers Limited - www.pocketeers.co.uk
//
// For updates, tutorials and more details check out www.appeasymobile.com
//
// This code is provided free of charge and without any warranty whatsoever. You must ensure that this whole notice is present in all files and derivatives, so the reader knows its origin.
// If you use this SDK in your product then please ensure that you credit AppEasy's usage appropriately. Please see www.appeasymobile.com for licensing details and support
//
//

#if !defined(_CCZ_UI_TEXT_VIEW_H_)
#define _CCZ_UI_TEXT_VIEW_H_

#include "CzUIBase.h"
#include "CzUILabel.h"
#include "CzScene.h"
#include "CzBrush.h"
#include "CzInput.h"

//
//
//
//
// CzUITextView - UI class that allows the user to view and edit multi-line scrolling text
//
//
//
//
class CzUITextView : public CzUILabel
{
public:
    // Properties
protected:
    CzIVec2             Area;                           ///< The area that the etxt should fit into
    float               Zoom;                           ///< Current zoom
    float               MinZoom;                        ///< The minimum zoom point
    float               MaxZoom;                        ///< The maximum zoom point
public:
    void                setArea(CzIVec2& size);
    CzIVec2             getArea() const                 { return Area; }
    void                setZoom(float scale);
    float               getZoom() const                 { return Zoom; }
    void                setMinZoom(float scale)         { MinZoom = scale; }
    float               getMinZoom() const              { return MinZoom; }
    void                setMaxZoom(float scale)         { MaxZoom = scale; }
    float               getMaxZoom() const              { return MaxZoom; }
    bool                setProperty(unsigned int property_name, const CzXomlProperty& data, bool delta);
    bool                setProperty(unsigned int property_name, const CzString& data, bool delta);
    bool                getProperty(unsigned int property_name, CzXomlProperty& prop);

    // Properties end
protected:
    float               PrevZoom;
    CzVec2              Midpoint;
    bool                ZoomValid;
    float               PreviousDist;
    float               CompoundScale;
    CzVec2              CompoundPosition;
    float               SavedCompoundScale;
    CzVec2              SavedCompoundPosition;
    CzVec2              PanVelocity;
    int                 TouchIndices[2];
    int                 NumTouches;
    bool                UpdateBinding(unsigned int property_name, CzXomlVariable* var);
public:
    CzUITextView();

    virtual bool        InitView(bool native_res, float min_scale, float max_scale);

    bool                Update(float dt);
    bool                UpdateVisual();

    // Event handlers
    void                NotifyBeginTouch(int index, int x, int y, bool allow_bubble);
    void                NotifyEndTouch(int index, int x, int y, bool allow_bubble);

    // Implementation of IzXomlClass interface
    int                 LoadFromXoml(IzXomlResource* parent, bool load_children, CzXmlNode* node);

    // Implementation of IzAnimTarget interface
    bool                UpdateFromAnimation(CzAnimInstance *animation);

    // Internal (used by XOML system to setup and cleanup the XOML class properties system
protected:
    static CzXomlClassDef*  TextViewClassDef;                               // XOML class definition
public:
    static void             InitClass();
    static void             ReleaseClass();

    static bool             _setMinZoom(IzXomlResource* target, const CzXomlProperty& prop, bool add);
    static CzXomlProperty   _getMinZoom(IzXomlResource* target);
    static bool             _setMaxZoom(IzXomlResource* target, const CzXomlProperty& prop, bool add);
    static CzXomlProperty   _getMaxZoom(IzXomlResource* target);
    static bool             _setZoom(IzXomlResource* target, const CzXomlProperty& prop, bool add);
    static CzXomlProperty   _getZoom(IzXomlResource* target);
    static bool             _setArea(IzXomlResource* target, const CzXomlProperty& prop, bool add);
    static CzXomlProperty   _getArea(IzXomlResource* target);
};

//
//  CzUITextViewCreator - Creates an instance of a TextView actor object
//
class CzUITextViewCreator : public IzXomlClassCreator
{
public:
    CzUITextViewCreator()
    {
        setClassName("textview");
    }
    IzXomlResource* CreateInstance(IzXomlResource* parent)  { return new CzUITextView(); }
};


#endif  // _CCZ_UI_TEXT_VIEW_H_