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/**
* Copyright 2010-2023 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.GL2ES2;
import com.jogamp.opengl.GLProfile;
import com.jogamp.graph.curve.OutlineShape;
import com.jogamp.graph.curve.Region;
import com.jogamp.graph.curve.opengl.RegionRenderer;
import com.jogamp.graph.curve.opengl.TextRegionUtil;
import com.jogamp.graph.font.Font;
import com.jogamp.graph.geom.plane.AffineTransform;
import com.jogamp.graph.ui.GraphShape;
import com.jogamp.opengl.math.FloatUtil;
import com.jogamp.opengl.math.Vec2f;
import com.jogamp.opengl.math.Vec3f;
import com.jogamp.opengl.math.Vec4f;
import com.jogamp.opengl.math.geom.AABBox;
import jogamp.graph.ui.shapes.Label0;
/**
* A GraphUI text labeled {@link BaseButton} {@link GraphShape}
* <p>
* GraphUI is GPU based and resolution independent.
* </p>
* <p>
* This button is rendered with a round oval shape.
* To render it rectangular, {@link #setCorner(float)} to zero.
* </p>
*/
public class Button extends BaseButton {
/** {@value} */
public static final float DEFAULT_SPACING_X = 0.12f;
/** {@value} */
public static final float DEFAULT_SPACING_Y = 0.42f;
private static final float DEFAULT_LABEL_ZOFFSET = 0.0001f; // 0.05f;
private float labelZOffset;
private final Label0 label;
private float spacingX = DEFAULT_SPACING_X;
private float spacingY = DEFAULT_SPACING_Y;
private final AffineTransform tempT1 = new AffineTransform();
private final AffineTransform tempT2 = new AffineTransform();
private final AffineTransform tempT3 = new AffineTransform();
public Button(final int renderModes, final Font labelFont,
final String labelText, final float width,
final float height) {
super(renderModes | Region.COLORCHANNEL_RENDERING_BIT, width, height);
this.labelZOffset = DEFAULT_LABEL_ZOFFSET;
this.label = new Label0(labelFont, labelText, new Vec4f( 1.66f, 1.66f, 1.66f, 1.0f )); // 0.60 * 1.66 ~= 1.0
}
public Font getFont() { return label.getFont(); }
public String getLaben() { return label.getText(); }
@Override
public void draw(final GL2ES2 gl, final RegionRenderer renderer, final int[] sampleCount) {
// No need to setup an poly offset for z-fighting, using one region now
// Setup poly offset for z-fighting
// gl.glEnable(GL.GL_POLYGON_OFFSET_FILL);
// gl.glPolygonOffset(0f, 1f);
super.draw(gl, renderer, sampleCount);
// gl.glDisable(GL.GL_POLYGON_OFFSET_FILL);
}
@Override
protected void addShapeToRegion(final GLProfile glp, final GL2ES2 gl) {
final OutlineShape shape = createBaseShape( FloatUtil.isZero(labelZOffset) ? 0f : -labelZOffset );
box.resize(shape.getBounds());
setRotationPivot( box.getCenter() );
// Sum Region buffer size of base-shape + text
final int[/*2*/] vertIndexCount = Region.countOutlineShape(shape, new int[2]);
TextRegionUtil.countStringRegion(label.getFont(), label.getText(), vertIndexCount);
resetGLRegion(glp, gl, null, vertIndexCount[0], vertIndexCount[1]);
region.addOutlineShape(shape, null, rgbaColor);
// Precompute text-box size .. guessing pixelSize
final float lw = box.getWidth() * ( 1f - spacingX ) ;
final float lh = box.getHeight() * ( 1f - spacingY ) ;
final AABBox lbox0_em = label.getFont().getGlyphBounds(label.getText(), tempT1, tempT2);
// final AABBox lbox0_em = label.getFont().getGlyphShapeBounds(null, label.getText(), tempT1, tempT2);
final float lsx = lw / lbox0_em.getWidth();
final float lsy = lh / lbox0_em.getHeight();
final float lScale = lsx < lsy ? lsx : lsy;
// Setting left-corner transform using text-box in font em-size [0..1]
final AABBox lbox1_s = new AABBox(lbox0_em).scale2(lScale);
// Center text .. (share same center w/ button)
final Vec3f lctr = lbox1_s.getCenter();
final Vec3f ctr = box.getCenter();
final Vec2f ltxy = new Vec2f(ctr.x() - lctr.x(), ctr.y() - lctr.y() );
if( DEBUG_DRAW ) {
System.err.println("Button: dim "+width+" x "+height+", spacing "+spacingX+", "+spacingY);
System.err.println("Button: net-text "+lw+" x "+lh);
System.err.println("Button: shape "+box);
System.err.println("Button: text_em "+lbox0_em+" em, "+label.getText());
System.err.println("Button: lscale "+lsx+" x "+lsy+" -> "+lScale);
System.err.printf ("Button: text_s %s%n", lbox1_s);
System.err.printf ("Button: ltxy %s, %f / %f%n", ltxy, ltxy.x() * lScale, ltxy.y() * lScale);
}
final AABBox lbox2 = label.addShapeToRegion(lScale, region, ltxy, tempT1, tempT2, tempT3);
if( DEBUG_DRAW ) {
System.err.printf("Button.X: lbox2 %s%n", lbox2);
}
}
public float getLabelZOffset() { return labelZOffset; }
public Button setLabelZOffset(final float v) {
labelZOffset = v;
markShapeDirty();
return this;
}
public final float getSpacingX() { return spacingX; }
public final float getSpacingY() { return spacingY; }
/**
* In percent of text label
* @param spacingX spacing in percent on X, default is {@link #DEFAULT_SPACING_X}
* @param spacingY spacing in percent on Y, default is {@link #DEFAULT_SPACING_Y}
*/
public final Button setSpacing(final float spacingX, final float spacingY) {
if ( spacingX < 0.0f ) {
this.spacingX = 0.0f;
} else if ( spacingX > 1.0f ) {
this.spacingX = 1.0f;
} else {
this.spacingX = spacingX;
}
if ( spacingY < 0.0f ) {
this.spacingY = 0.0f;
} else if ( spacingY > 1.0f ) {
this.spacingY = 1.0f;
} else {
this.spacingY = spacingY;
}
markShapeDirty();
return this;
}
public final Vec4f getLabelColor() {
return label.getColor();
}
public final Button setLabelColor(final float r, final float g, final float b) {
label.setColor(r, g, b, 1.0f);
markShapeDirty();
return this;
}
public final Button setFont(final Font labelFont) {
if( !label.getFont().equals(labelFont) ) {
label.setFont(labelFont);
markShapeDirty();
}
return this;
}
public final Button setLabel(final String labelText) {
if( !label.getText().equals(labelText) ) {
label.setText(labelText);
markShapeDirty();
}
return this;
}
public final Button setLabel(final Font labelFont, final String labelText) {
if( !label.getText().equals(labelText) || !label.getFont().equals(labelFont) ) {
label.setFont(labelFont);
label.setText(labelText);
markShapeDirty();
}
return this;
}
@Override
public String getSubString() {
return super.getSubString()+", "+ label + ", " + "spacing["+spacingX+", "+spacingY+"]";
}
}
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