Re: [Plib-users] Re: Custom 'Looking' Widgets

[<Rol...@t-...>]

On Sunday 28 July 2002 19:37, Majel deMaya wrote:
> myButton->setRenderCallback(customCallback);

The render callback is the suggested way.
As I wanted to have textured buttons, I derived from puButton and replaced the 
draw function. What I did there should also be possible in the render 
callback.

puImageButton.h:
#include "puImageButton.h"
#include <iostream.h>

#ifndef INCL_PUIMAGEBUTTON_H
#define INCL_PUIMAGEBUTTON_H

#include <plib/pu.h>
#include <plib/ssg.h>

class puImageButton : public puButton
{
public:
puImageButton(int,int,int,int,const char *);
void draw(int dx,int dy);
protected:
ssgTexture *texture;
};

#endif

puImageButton.cpp:
puImageButton::puImageButton(int minx,int miny,int maxx,int maxy,const char 
*image) : puButton(minx,miny,maxx,maxy)
{
texture=new ssgTexture(image);
//cerr << "texture handle : " << texture->getHandle() << endl;
}

void puImageButton::draw(int dx,int dy)
{
if (!visible || (window!=puGetWindow())) return;

puButton::draw(dx,dy);

int m=4;
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture->getHandle());
glColor4f(1.0,1.0,1.0,1.0);
glBegin(GL_QUADS);
glTexCoord2f(0.0,0.0);
  glVertex2i(dx+abox.min[0]+m,dy+abox.min[1]+m);
glTexCoord2f(0.0,1.0);
  glVertex2i(dx+abox.min[0]+m,dy+abox.max[1]-m);
glTexCoord2f(1.0,1.0);
  glVertex2i(dx+abox.max[0]-m,dy+abox.max[1]-m);
glTexCoord2f(1.0,0.0);
  glVertex2i(dx+abox.max[0]-m,dy+abox.min[1]+m);
glEnd();
glDisable(GL_TEXTURE_2D);
}

Try to put something like that in the above draw function into your callback 
(without the first two lines), it should work.

Rolf
-- 
Rolf Jakob at home (rj...@du...)
WWW : http://www.franken.de/users/duffy1/rjakob (KDE-Utils and CCS)