1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/**
* 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.Group;
import com.jogamp.graph.ui.Shape;
import com.jogamp.opengl.math.FloatUtil;
import com.jogamp.opengl.math.geom.AABBox;
import com.jogamp.opengl.util.PMVMatrix;
/**
* GraphUI Stack {@link Group.Layout}.
* <p>
* A stack of {@link Shape}s
* - Size kept unscaled
* - Position depends on {@Link Padding} and {@link Margin}
* - Cell size can be set
* </p>
*/
public class BoxLayout implements Group.Layout {
private final float cellWidth, cellHeight;
private final Margin margin;
private final Padding padding;
private static final boolean TRACE_LAYOUT = false;
public BoxLayout(final Padding padding) {
this(0f, 0f, new Margin(), padding);
}
public BoxLayout(final float width, final float height, final Margin margin) {
this(width, height, margin, new Padding());
}
/**
*
* @param width
* @param height
* @param margin
* @param padding
*/
public BoxLayout(final float width, final float height, final Margin margin, final Padding padding) {
this.cellWidth = Math.max(0f, width);
this.cellHeight = Math.max(0f, height);
this.margin = margin;
this.padding = padding;
}
public Padding getPadding() { return padding; }
public Margin getMargin() { return margin; }
@Override
public void layout(final Group g, final AABBox box, final PMVMatrix pmv) {
final boolean hasCellWidth = !FloatUtil.isZero(cellWidth);
final boolean hasCellHeight = !FloatUtil.isZero(cellHeight);
final List<Shape> shapes = g.getShapes();
final AABBox sbox = new AABBox();
for(int i=0; i < shapes.size(); ++i) {
final Shape s = shapes.get(i);
// measure size
pmv.glPushMatrix();
s.setTransform(pmv);
s.getBounds().transformMv(pmv, sbox);
pmv.glPopMatrix();
// adjust size and position (centered)
final float paddedWidth = sbox.getWidth() + padding.width();
final float paddedHeight = sbox.getHeight() + padding.height();
final float cellWidth2 = hasCellWidth ? cellWidth : paddedWidth;
final float cellHeight2 = hasCellHeight ? cellHeight : paddedHeight;
float x = margin.left;
float y = margin.bottom;
if( !margin.isCenteredHoriz() && paddedWidth <= cellWidth2 ) {
x += padding.left;
}
if( !margin.isCenteredVert() && paddedHeight <= cellHeight2 ) {
y += padding.bottom;
}
final float dxh, dyh;
if( margin.isCenteredHoriz() ) {
dxh = 0.5f * ( cellWidth2 - paddedWidth ); // actual horiz-centered
} else {
dxh = 0;
}
if( margin.isCenteredVert() ) {
dyh = 0.5f * ( cellHeight2 - paddedHeight ); // actual vert-centered
} else {
dyh = 0;
}
if( TRACE_LAYOUT ) {
System.err.println("bl["+i+"].0: @ "+s.getPosition()+", sbox "+sbox);
System.err.println("bl["+i+"].m: "+x+" / "+y+" + "+dxh+" / "+dyh+", p "+paddedWidth+" x "+paddedHeight+", sz "+cellWidth2+" x "+cellHeight2+", box "+box.getWidth()+" x "+box.getHeight());
}
s.move( x + dxh, y + dyh, 0f ); // center the scaled artifact
s.move( sbox.getLow().mul(-1f) ); // remove the bottom-left delta
// resize bounds including padding, excluding margin
box.resize( x + sbox.getWidth() + padding.right, y + sbox.getHeight() + padding.top, 0);
box.resize( x - padding.left, y - padding.bottom, 0);
if( TRACE_LAYOUT ) {
System.err.println("bl["+i+"].x: "+x+" / "+y+" + "+dxh+" / "+dyh+" -> "+s.getPosition()+", p "+paddedWidth+" x "+paddedHeight+", sz "+cellWidth2+" x "+cellHeight2+", box "+box.getWidth()+" x "+box.getHeight());
}
}
}
@Override
public String toString() {
return "Box[cell["+cellWidth+" x "+cellHeight+"], "+margin+", "+padding+"]";
}
}
|
