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/*
* Modification History
*
* 2001-September-16 Jason Rohrer
* Created.
*/
#ifndef STICKY_BUTTON_GL_INCLUDED
#define STICKY_BUTTON_GL_INCLUDED
#include "ButtonGL.h"
#include "minorGems/graphics/Image.h"
#include "minorGems/graphics/openGL/SingleTextureGL.h"
/**
* A button that can be toggled between a pressed
* and unpressed state.
*
* @author Jason Rohrer
*/
class StickyButtonGL : public ButtonGL {
public:
/**
* Constructs a button.
*
* @param inAnchorX the x position of the upper left corner
* of this component.
* @param inAnchorY the y position of the upper left corner
* of this component.
* @param inWidth the width of this component.
* @param inHeight the height of this component.
* @param inUnpressedImage the image to display
* when this button is unpressed. Must have dimensions
* that are powers of 2.
* Will be destroyed when this class is destroyed.
* @param inPressedImage the image to display
* when this button is pressed. Must have dimensions
* that are powers of 2.
* Will be destroyed when this class is destroyed.
*/
StickyButtonGL(
double inAnchorX, double inAnchorY, double inWidth,
double inHeight, Image *inUnpressedImage,
Image *inPressedImage );
/**
* Gets whether this button is toggled to a pressed state.
*
* @return true iff this button is pressed.
*/
virtual char isPressed();
/**
* Sets this button's state.
*
* Note that if this function call causes
* this button's state to change, then all
* registered ActionListeners are notified.
*
* @param inPressed true iff this button should be
* pressed.
*/
virtual void setPressed( char inPressed );
// override funxtions in GUIComponentGL
virtual void mouseDragged( double inX, double inY );
virtual void mousePressed( double inX, double inY );
virtual void mouseReleased( double inX, double inY );
};
inline StickyButtonGL::StickyButtonGL(
double inAnchorX, double inAnchorY, double inWidth,
double inHeight, Image *inUnpressedImage,
Image *inPressedImage )
: ButtonGL( inAnchorX, inAnchorY, inWidth, inHeight,
inUnpressedImage, inPressedImage ) {
}
inline char StickyButtonGL::isPressed() {
if( mCurrentTexture == mPressedTexture ) {
return true;
}
else {
return false;
}
}
inline void StickyButtonGL::setPressed( char inPressed ) {
SingleTextureGL *lastTexture = mCurrentTexture;
if( inPressed ) {
mCurrentTexture = mPressedTexture;
}
else {
mCurrentTexture = mUnpressedTexture;
}
// check for state change
if( lastTexture != mCurrentTexture ) {
fireActionPerformed( this );
}
}
inline void StickyButtonGL::mouseDragged( double inX, double inY ) {
// do nothing until the release
}
inline void StickyButtonGL::mousePressed( double inX, double inY ) {
// do nothing until the release
}
inline void StickyButtonGL::mouseReleased( double inX, double inY ) {
// Note the following situation:
// If the mouse is pressed on another button and then
// released on this button, this button will toggle...
// This is non-standard behavior, but the situation occurs
// rarely. By ignoring this situation, we save a bit of coding,
// but this may need to be fixed later.
if( isInside( inX, inY ) ) {
// toggle our state to the opposite of it's current setting
setPressed( !isPressed() );
// this will fire an action automatically
}
}
#endif
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