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/*
* Modification History
*
* 2001-September-15 Jason Rohrer
* Created.
* Changed to use normalized floating point coordinates.
* Fixed some compile bugs.
* Changed to extend the GUIComponent class.
*
* 2001-October-29 Jason Rohrer
* Added support for focus.
*/
#ifndef GUI_COMPONENT_GL_INCLUDED
#define GUI_COMPONENT_GL_INCLUDED
#include "minorGems/graphics/openGL/RedrawListenerGL.h"
#include "minorGems/ui/GUIComponent.h"
/**
* A base class for all OpenGL GUI components.
*
* Note that all coordinates are specified in a normalized
* [0,1.0] space, where the screen is spanned by this [0,1.0] range.
*
* @author Jason Rohrer
*/
class GUIComponentGL : public GUIComponent, public RedrawListenerGL {
public:
/**
* Tests whether a point is inside this component.
*
* @param inX the x value to check.
* @param inY the y value to check.
*
* @return true iff the point is insided this component.
*/
virtual char isInside( double inX, double inY );
/**
* Sets this component's focus status.
*
* Note that this component may ignore this function call
* and configure its own focus (for example, some
* components are never focused).
*
* The default implementation ignores this call
* and is never focused.
*
* @param inFocus true iff this component should be focused.
*/
virtual void setFocus( char inFocus );
// the implementations below do nothing, but they allow
// subclasses to pick which input they care about (and which
// functions they want to override)
// implements a normalized (to [0,1.0] version
// of a MouseHandlerGL-like interface
virtual void mouseMoved( double inX, double inY );
virtual void mouseDragged( double inX, double inY );
virtual void mousePressed( double inX, double inY );
virtual void mouseReleased( double inX, double inY );
// implements a normalized (to [0,1.0] version
// of a KeyboardHandlerGL-like interface
virtual char isFocused();
virtual void keyPressed( unsigned char inKey, double inX, double inY );
virtual void specialKeyPressed( int inKey, double inX, double inY );
virtual void keyReleased( unsigned char inKey,
double inX, double inY );
virtual void specialKeyReleased( int inKey, double inX, double inY );
// implements the RedrawListenerGL interface
virtual void fireRedraw();
protected:
/**
* Constructs a component.
*
* Should only be called by subclass constructors.
*
* @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.
*/
GUIComponentGL( double inAnchorX, double inAnchorY, double inWidth,
double inHeight );
double mAnchorX;
double mAnchorY;
double mWidth;
double mHeight;
};
inline GUIComponentGL::GUIComponentGL(
double inAnchorX, double inAnchorY, double inWidth,
double inHeight )
: mAnchorX( inAnchorX ), mAnchorY( inAnchorY ), mWidth( inWidth ),
mHeight( inHeight ) {
}
inline char GUIComponentGL::isInside( double inX, double inY ) {
if( inX >= mAnchorX && inX < mAnchorX + mWidth
&& inY >= mAnchorY && inY < mAnchorY + mHeight ) {
return true;
}
else {
return false;
}
}
inline void GUIComponentGL::mouseMoved( double inX, double inY ) {
}
inline void GUIComponentGL::mouseDragged( double inX, double inY ) {
}
inline void GUIComponentGL::mousePressed( double inX, double inY ) {
}
inline void GUIComponentGL::mouseReleased( double inX, double inY ) {
}
inline void GUIComponentGL::setFocus( char inFocus ) {
// default implementation ignores this call
}
inline char GUIComponentGL::isFocused() {
return false;
}
inline void GUIComponentGL::keyPressed(
unsigned char inKey, double inX, double inY ) {
}
inline void GUIComponentGL::specialKeyPressed(
int inKey, double inX, double inY ) {
}
inline void GUIComponentGL::keyReleased(
unsigned char inKey, double inX, double inY ) {
}
inline void GUIComponentGL::specialKeyReleased(
int inKey, double inX, double inY ) {
}
inline void GUIComponentGL::fireRedraw() {
}
#endif
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