GClasses::GWidgetCanvas Class Reference

Detailed Description

A painting canvas.

#include <GWidgets.h>

Inheritance diagram for GClasses::GWidgetCanvas:

Public Member Functions
	GWidgetCanvas (GWidgetGroup *pParent, int x, int y, int w, int h, GImage *pImage)
virtual	~GWidgetCanvas ()
virtual void	draw (GImage *pCanvas, int x, int y)
	Draws this widget on pCanvas at (x,y) More...
void	setDirty ()
void	setHorizScroll (int x)
void	setImage (GImage *pImage)
void	setSelectionMask (GImage *pMask)
	Only the alpha channel of the mask is used. The other values should be constant, or else the selection border will cut through the selection. If you change what is selected, you should call this method again, even though it may still be the same mask image. More...
void	setVertScroll (int y)
void	setZoom (float f)
virtual WidgetType	type ()
float	zoom ()
void	zoomToFit ()
Public Member Functions inherited from GClasses::GWidgetAtomic
	GWidgetAtomic (GWidgetGroup *pParent, int x, int y, int w, int h)
virtual	~GWidgetAtomic ()
virtual bool	isAtomic ()
virtual bool	isClickable ()
virtual void	onChar (char c)
virtual void	onGetFocus ()
virtual void	onLoseFocus ()
virtual void	onSpecialKey (int key)
Public Member Functions inherited from GClasses::GWidget
	GWidget (GWidgetGroup *m_pParent, int x, int y, int w, int h)
virtual	~GWidget ()
int	id ()
GWidgetGroup *	parent ()
GRect *	rect ()
void	setPos (int x, int y)

Protected Member Functions
virtual void	grab (int button, int x, int y)
virtual void	onMouseMove (int dx, int dy)
virtual void	release (int button)

Protected Attributes
float	m_fZoom
int	m_nHScroll
int	m_nMouseX
int	m_nMouseY
int	m_nVScroll
GImage *	m_pImageIn
bool	m_pressed
GImage *	m_pSelectionMask
Protected Attributes inherited from GClasses::GWidget
GWidgetCommon *	m_common
int	m_nID
GWidgetGroup *	m_pParent
GRect	m_rect

Additional Inherited Members

Public Types inherited from GClasses::GWidget

Constructor & Destructor Documentation

GClasses::GWidgetCanvas::GWidgetCanvas	(	GWidgetGroup *	pParent,
		int	x,
		int	y,
		int	w,
		int	h,
		GImage *	pImage
	)

virtual GClasses::GWidgetCanvas::~GWidgetCanvas ( )

virtual

Member Function Documentation

virtual void GClasses::GWidgetCanvas::draw ( GImage *  pCanvas, int  x, int  y  )

virtual

Draws this widget on pCanvas at (x,y)

Implements GClasses::GWidget.

virtual void GClasses::GWidgetCanvas::grab ( int  button, int  x, int  y  )

protectedvirtual

Reimplemented from GClasses::GWidgetAtomic.

virtual void GClasses::GWidgetCanvas::onMouseMove ( int  dx, int  dy  )

protectedvirtual

Reimplemented from GClasses::GWidgetAtomic.

virtual void GClasses::GWidgetCanvas::release ( int  button )

protectedvirtual

Reimplemented from GClasses::GWidgetAtomic.

void GClasses::GWidgetCanvas::setDirty

(

)

void GClasses::GWidgetCanvas::setHorizScroll

(

int

x

)

void GClasses::GWidgetCanvas::setImage

(

GImage *

pImage

)

void GClasses::GWidgetCanvas::setSelectionMask

(

GImage *

pMask

)

Only the alpha channel of the mask is used. The other values should be constant, or else the selection border will cut through the selection. If you change what is selected, you should call this method again, even though it may still be the same mask image.

void GClasses::GWidgetCanvas::setVertScroll

(

int

y

)

void GClasses::GWidgetCanvas::setZoom

(

float

f

)

virtual WidgetType GClasses::GWidgetCanvas::type ( )

inlinevirtual

Implements GClasses::GWidget.

float GClasses::GWidgetCanvas::zoom ( )

inline

void GClasses::GWidgetCanvas::zoomToFit

(

)

Member Data Documentation

float GClasses::GWidgetCanvas::m_fZoom

protected

int GClasses::GWidgetCanvas::m_nHScroll

protected

int GClasses::GWidgetCanvas::m_nMouseX

protected

int GClasses::GWidgetCanvas::m_nMouseY

protected

int GClasses::GWidgetCanvas::m_nVScroll

protected

GImage* GClasses::GWidgetCanvas::m_pImageIn

protected

bool GClasses::GWidgetCanvas::m_pressed

protected

GImage* GClasses::GWidgetCanvas::m_pSelectionMask

protected