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/* Copyright (C) 2004 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/**
* @file myx_gc_layer.h
* @brief Implementation of the GC layer class.
*
*/
#ifndef __GC_LAYER_H__
#define __GC_LAYER_H__
#include "myx_gc_base.h"
//----------------------------------------------------------------------------------------------------------------------
class CGenericCanvas;
class CFigureInstance;
class CFigure;
class CConnection;
class CConnectionInstance;
/**
* This is the base layer class, which is used by views to display their content. There are descendants for special things
* like feedback, grids and so on.
*/
class GENERIC_CANVAS_API CLayer: public CGCBase
{
friend class CFigureInstance;
friend class CFigureInstanceEnumerator;
friend class CInstanceListener;
friend class CGCView;
private:
class CInstanceListener: private CGCBaseListener
{
friend class CLayer;
protected:
CLayer* layer;
public:
virtual void __cdecl onAction(CGCBase* sender, CGCBase* origin, TAction** action);
virtual void __cdecl onChange(CGCBase* sender, CGCBase* origin, TGCChangeReason reason);
virtual void __cdecl onDestroy(CGCBase* object);
virtual void __cdecl onError(CGCBase* sender, CGCBase* origin, const char* message);
};
wstring FName; // The name of the layer.
bool FDirty; // True if any of the properties changed that affect the display list.
float FScaling[3]; // The factors to scale the layer in each direction.
float FMinimalScale; // The lesser of the x and y scale factors.
float FTranslation[3]; // The factors to move the layer.
CFigureInstances FInstances; // A list of figures instances.
CFigureInstances FGroups; // A list of groups.
bool FVisible; // true if the layer is visible, otherwise false. Default is true.
bool FEnabled; // True if the layer answers to mouse and keyboard actions.
CInstanceListener FListener;
protected:
void applyTransformations();
void checkError(void);
void renderFeedback(CFigureInstance* instance);
virtual void renderLayerContent(TBoundingBox bounds);
virtual void validateLayerContent(void);
virtual void zoomChanged(float newZoom);
public:
CLayer(string name, CGenericCanvas* canvas);
virtual ~CLayer(void);
virtual void __cdecl addInstance(CFigureInstance* instance);
virtual void __cdecl bringToFront(CFigureInstance* instance, CFigureInstance* relativeTo = NULL);
virtual void __cdecl clear(void);
virtual CFigureInstance* __cdecl createInstance(CFigure* figure);
void getHitTestInfoAt(CHitResults* hits, TVertex point, bool singleHit);
virtual bool __cdecl enabledGet(void);
virtual void __cdecl enabledSet(bool isEnabled);
virtual const CFigureInstances *instancesGet();
virtual void __cdecl layerToView(TVertex original, TVertex& result);
void makeDirty(void);
wstring name(void) { return FName; };
virtual TGCVariant __cdecl propertyGet(const char* name, unsigned int index);
virtual void __cdecl propertySet(const char* name, unsigned int index, TGCVariant value);
virtual void __cdecl removeInstance(CFigureInstance* instance);
virtual void __cdecl render(TBoundingBox bounds);
virtual void __cdecl scale(float Sx, float Sy, float Sz, bool accumulative = false);
virtual void __cdecl scaleV(const float Factor[3], bool accumulative = false);
virtual void __cdecl sendToBack(CFigureInstance* instance, CFigureInstance* relativeTo = NULL);
virtual void __cdecl translate(float Tx, float Ty, float Tz, bool accumulative = false);
virtual void __cdecl translateV(const float Factor[3], bool accumulative = false);
void validate(void);
virtual void __cdecl viewToLayer(TVertex original, TVertex& result);
virtual bool __cdecl visibleGet(void);
virtual void __cdecl visibleSet(bool isVisible);
};
//----------------------------------------------------------------------------------------------------------------------
/**
* The grid layer is a special layer variant that renders itself as grid.
*/
class GENERIC_CANVAS_API CGridLayer: public CLayer
{
friend class CGCView;
private:
CGCView* FView; // The view to which this layer belongs.
protected:
virtual void renderLayerContent(TBoundingBox bounds);
public:
CGridLayer(CGCView* view);
};
//----------------------------------------------------------------------------------------------------------------------
#endif // __GC_LAYER_H__
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