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/**
* Copyright 2014-2023 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.graph.ui.shapes;
import com.jogamp.opengl.GL;
import com.jogamp.opengl.GL2ES2;
import com.jogamp.opengl.GLCapabilities;
import com.jogamp.opengl.GLCapabilitiesImmutable;
import com.jogamp.opengl.GLContext;
import com.jogamp.opengl.GLDrawable;
import com.jogamp.opengl.GLDrawableFactory;
import com.jogamp.opengl.GLEventListener;
import com.jogamp.opengl.GLOffscreenAutoDrawable;
import com.jogamp.graph.curve.opengl.RegionRenderer;
import com.jogamp.graph.ui.GraphShape;
import com.jogamp.opengl.FBObject;
import com.jogamp.opengl.util.texture.ImageSequence;
import com.jogamp.opengl.util.texture.Texture;
/**
* A GraphUI {@link GLEventListener} based {@link TexSeqButton} {@link GraphShape}.
* <p>
* GraphUI is GPU based and resolution independent.
* </p>
* <p>
* The {@link GLEventListener} is rendered via an {@link GLOffscreenAutoDrawable.FBO} into an {@link ImageSequence}.
* </p>
* <p>
* This button is rendered with a round oval shape.
* To render it rectangular, {@link #setCorner(float)} to zero.
* </p>
*/
public class GLButton extends TexSeqButton {
private final GLEventListener glel;
private final boolean useAlpha;
private volatile int fboWidth = 200;
private volatile int fboHeight = 200;
private volatile GLOffscreenAutoDrawable.FBO fboGLAD = null;
private boolean animateGLEL = false;
public GLButton(final int renderModes, final float width, final float height,
final int textureUnit, final GLEventListener glel, final boolean useAlpha) {
super(renderModes, width, height, new ImageSequence(textureUnit, true));
this.glel = glel;
this.useAlpha = useAlpha;
setColor(0.95f, 0.95f, 0.95f, 1.0f);
setPressedColorMod(1f, 1f, 1f, 0.9f);
setToggleOffColorMod(0.8f, 0.8f, 0.8f, 1.0f);
setToggleOnColorMod(1.0f, 1.0f, 1.0f, 1.0f);
// fake surface-size, will be overriden in initial FBO setup @ display
this.fboWidth = 320;
this.fboHeight = Math.round( 640 * height / width );
}
public final void setAnimate(final boolean v) { animateGLEL = v; }
public final boolean getAnimate() { return animateGLEL; }
public final void setFBOSize(final int fboWidth, final int fboHeight) {
this.fboWidth = fboWidth;
this.fboHeight = fboHeight;
}
public final GLOffscreenAutoDrawable.FBO getFBOAutoDrawable() { return fboGLAD; }
@Override
protected void destroyImpl(final GL2ES2 gl, final RegionRenderer renderer) {
((ImageSequence)texSeq).destroy(gl);
fboGLAD.destroy();
}
@Override
public void draw(final GL2ES2 gl, final RegionRenderer renderer, final int[] sampleCount) {
final int[/*2*/] surfaceSize = getSurfaceSize(renderer.getMatrix(), renderer.getViewport(), new int[2]);
final boolean got_sz = null != surfaceSize && 0 < surfaceSize[0] && 0 < surfaceSize[1];
if( null == fboGLAD ) {
final ImageSequence imgSeq = (ImageSequence)texSeq;
final GLContext ctx = gl.getContext();
final GLDrawable drawable = ctx.getGLDrawable();
final GLCapabilitiesImmutable reqCaps = drawable.getRequestedGLCapabilities();
final GLCapabilities caps = (GLCapabilities) reqCaps.cloneMutable();
caps.setFBO(true);
caps.setDoubleBuffered(false);
if( !useAlpha ) {
caps.setAlphaBits(0);
}
final GLDrawableFactory factory = GLDrawableFactory.getFactory(caps.getGLProfile());
// System.err.println("XXX FBO initSurfaceSize got_sz "+got_sz+", "+fboWidth+" x "+fboHeight+" -> "+surfaceSize[0]+" x "+surfaceSize[1]);
if( got_sz ) {
// override with real surface-size
fboWidth = surfaceSize[0];
fboHeight = surfaceSize[1];
}
fboGLAD = (GLOffscreenAutoDrawable.FBO) factory.createOffscreenAutoDrawable(
drawable.getNativeSurface().getGraphicsConfiguration().getScreen().getDevice(),
caps, null, fboWidth, fboHeight);
fboWidth = 0;
fboHeight = 0;
fboGLAD.setSharedContext(ctx);
fboGLAD.setTextureUnit(imgSeq.getTextureUnit());
fboGLAD.addGLEventListener(glel);
fboGLAD.display(); // 1st init!
final FBObject.TextureAttachment texA01 = fboGLAD.getColorbuffer(GL.GL_FRONT).getTextureAttachment();
final Texture tex = new Texture(texA01.getName(), imgSeq.getTextureTarget(),
fboGLAD.getSurfaceWidth(), fboGLAD.getSurfaceHeight(), fboGLAD.getSurfaceWidth(), fboGLAD.getSurfaceHeight(),
false /* mustFlipVertically */);
imgSeq.addFrame(gl, tex);
markStateDirty();
} else if( 0 != fboWidth*fboHeight ) {
fboGLAD.setSurfaceSize(fboWidth, fboHeight);
fboWidth = 0;
fboHeight = 0;
markStateDirty();
} else if( got_sz && ( fboGLAD.getSurfaceWidth() != surfaceSize[0] || fboGLAD.getSurfaceHeight() != surfaceSize[1] ) ) {
// System.err.println("XXX FBO setSurfaceSize "+fboGLAD.getSurfaceWidth()+" x "+fboGLAD.getSurfaceHeight()+" -> "+surfaceSize[0]+" x "+surfaceSize[1]);
final ImageSequence imgSeq = (ImageSequence)texSeq;
fboGLAD.setSurfaceSize(surfaceSize[0], surfaceSize[1]);
fboGLAD.display(); // re-init!
imgSeq.destroy(gl);
final FBObject.TextureAttachment texA01 = fboGLAD.getColorbuffer(GL.GL_FRONT).getTextureAttachment();
final Texture tex = new Texture(texA01.getName(), imgSeq.getTextureTarget(),
fboGLAD.getSurfaceWidth(), fboGLAD.getSurfaceHeight(), fboGLAD.getSurfaceWidth(), fboGLAD.getSurfaceHeight(),
false /* mustFlipVertically */);
imgSeq.addFrame(gl, tex);
fboWidth = 0;
fboHeight = 0;
markStateDirty();
} else if( animateGLEL ) {
fboGLAD.display();
}
super.draw(gl, renderer, sampleCount);
if( animateGLEL ) {
markStateDirty(); // keep on going
}
}
}
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