GraphUI: Relocate com.jogamp.graph.ui.gl.* -> com.jogamp.graph.ui.*, resolve GL/VK abstraction at a later time differently

Actual GPU rendering toolkit dependency can be abstracted differently, i.e. GPU <- { GL, VK } etc.

1 files changed, 170 insertions, 0 deletions

diff --git a/src/graphui/classes/com/jogamp/graph/ui/shapes/GLButton.java b/src/graphui/classes/com/jogamp/graph/ui/shapes/GLButton.java
new file mode 100644
index 000000000..f11475b84
--- /dev/null
+++ b/src/graphui/classes/com/jogamp/graph/ui/shapes/GLButton.java
@@ -0,0 +1,170 @@
+/**
+ * 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
+        }
+    }
+}