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/**
* Copyright 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.layout;
import java.util.List;
import com.jogamp.graph.ui.GraphShape;
import com.jogamp.graph.ui.Group;
import com.jogamp.graph.ui.Shape;
import com.jogamp.opengl.math.geom.AABBox;
import com.jogamp.opengl.util.PMVMatrix;
/**
* GraphUI Grid {@link Group.Layout}.
*/
public class GridLayout implements Group.Layout {
/** Layout order for {@link Group#getShapes()}} after population. */
public static enum Order {
/** COLUMN layout order of {@link Group#getShapes()}} is left to right and top to bottom. */
COLUMN,
/** ROW layout order of {@link Group#getShapes()}} is top to bottom and left to right. */
ROW
}
private final Order order;
private final int col_limit;
private final int row_limit;
private final float cellWidth, cellHeight;
private final Padding padding;
private int row_count, col_count;
/**
* Default layout order of {@link Group#getShapes()}} is {@link Order#COLUMN}.
* @param column_limit [1..inf)
* @param cellWidth
* @param cellHeight
*/
public GridLayout(final int column_limit, final float cellWidth, final float cellHeight) {
this(Math.max(1, column_limit), -1, cellWidth, cellHeight, new Padding());
}
/**
* Default layout order of {@link Group#getShapes()}} is {@link Order#COLUMN}.
* @param column_limit [1..inf)
* @param cellWidth
* @param cellHeight
* @param padding
*/
public GridLayout(final int column_limit, final float cellWidth, final float cellHeight, final Padding padding) {
this(Math.max(1, column_limit), -1, cellWidth, cellHeight, padding);
}
/**
* Default layout order of {@link Group#getShapes()}} is {@link Order#ROW}.
* @param cellWidth
* @param cellHeight
* @param padding
* @param row_limit [1..inf)
*/
public GridLayout(final float cellWidth, final float cellHeight, final Padding padding, final int row_limit) {
this(-1, Math.max(1, row_limit), cellWidth, cellHeight, padding);
}
private GridLayout(final int column_limit, final int row_limit, final float cellWidth, final float cellHeight, final Padding padding) {
this.order = 0 < column_limit ? Order.COLUMN : Order.ROW;
this.col_limit = column_limit;
this.row_limit = row_limit;
this.cellWidth = cellWidth;
this.cellHeight = cellHeight;
this.padding = padding;;
row_count = 0;
col_count = 0;
}
public Order getOrder() { return order; }
public int getColumnCount() { return col_count; }
public int getRowCount() { return row_count; }
@Override
public void layout(final Group g, final AABBox box, final PMVMatrix pmv) {
final List<Shape> shapes = g.getShapes();
if( Order.COLUMN == order ) {
row_count = (int) Math.ceil( (double)shapes.size() / (double)col_limit );
col_count = col_limit;
} else { // Order.ROW_MAJOR == order
row_count = row_limit;
col_count = (int) Math.ceil( (double)shapes.size() / (double)row_limit );
}
int col_i = 0, row_i = 0;
final AABBox sbox = new AABBox();
for(final Shape s : shapes) {
// measure size
pmv.glPushMatrix();
s.setTransform(pmv);
s.getBounds().transformMv(pmv, sbox);
pmv.glPopMatrix();
// adjust size and position (centered)
final float x = ( ( col_i ) * ( cellWidth + padding.width() ) ) + padding.left;
final float y = ( ( row_count - row_i - 1 ) * ( cellHeight + padding.height() ) ) + padding.bottom;
final float sx = cellWidth / sbox.getWidth();
final float sy = cellHeight/ sbox.getHeight();
final float sxy = sx < sy ? sx : sy;
final float dxh = sbox.getWidth() * ( sx - sxy ) * 0.5f;
final float dyh = sbox.getHeight() * ( sy - sxy ) * 0.5f;
s.moveTo( x + dxh, y + dyh, 0f ); // center the scaled artifact
s.move( sbox.getLow().mul(-1f*sxy) ); // remove the bottom-left delta
s.scale( sxy, sxy, 1f);
box.resize( x + cellWidth + padding.right, y + cellHeight + padding.top, 0);
box.resize( x - padding.left, y - padding.bottom, 0);
// System.err.println("["+row_i+"]["+col_i+"]: "+x+" / "+y+", sxy "+sxy+", d[xy]h "+dxh+" x "+dyh+", "+sbox);
// position for next cell
if( Order.COLUMN == order ) {
if( col_i + 1 == col_limit ) {
col_i = 0;
row_i++;
} else {
col_i++;
}
} else { // Order.ROW_MAJOR == order
if( row_i + 1 == row_limit ) {
row_i = 0;
col_i++;
} else {
row_i++;
}
}
}
}
@Override
public String toString() {
return "Grid["+row_count+"x"+col_count+", "+order+", cell["+cellWidth+" x "+cellHeight+"], "+padding+"]";
}
}
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