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/*
* java-gnome, a UI library for writing GTK and GNOME programs from Java!
*
* Copyright © 2009-2010 Operational Dynamics Consulting, Pty Ltd
* Copyright © 2009 Vreixo Formoso
*
* The code in this file, and the program it is a part of, is made available
* to you by its authors as open source software: you can redistribute it
* and/or modify it under the terms of the GNU General Public License version
* 2 ("GPL") as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GPL for more details.
*
* You should have received a copy of the GPL along with this program. If not,
* see http://www.gnu.org/licenses/. The authors of this program may be
* contacted through http://java-gnome.sourceforge.net/.
*/
package org.freedesktop.cairo;
import org.gnome.gtk.GraphicalTestCase;
/**
* Unit tests for org.freedesktop.cairo.Context functions.
*
* @author Vreixo Formoso
*/
public class ValidateCairoContext extends GraphicalTestCase
{
public final void testSaveRestore() {
final Context cr;
final ImageSurface s;
s = new ImageSurface(Format.ARGB32, 100, 100);
cr = new Context(s);
/* set some parameters */
cr.setLineWidth(2.5);
assertEquals(2.5, cr.getLineWidth());
/* save context */
cr.save();
/* change parameters */
cr.setLineWidth(38.0);
assertEquals(38.0, cr.getLineWidth());
/* save again */
cr.save();
cr.setLineWidth(1.2);
assertEquals(1.2, cr.getLineWidth());
/* restore */
cr.restore();
assertEquals(38.0, cr.getLineWidth());
cr.restore();
assertEquals(2.5, cr.getLineWidth());
try {
cr.restore();
fail("restore() without matching save() should fail");
} catch (IllegalStateException e) {
// ok
}
}
public final void testCairoInFill() {
final Context cr;
final ImageSurface s;
s = new ImageSurface(Format.ARGB32, 100, 100);
cr = new Context(s);
cr.moveTo(10.0, 10.0);
cr.rectangle(10.0, 10.0, 80.0, 80.0);
assertTrue(cr.inFill(50.0, 50.0));
assertFalse(cr.inFill(5.0, 5.0));
assertFalse(cr.inFill(95.0, 95.0));
/*
* Now, some curiousity about corner cases, established while
* documenting.
*/
assertFalse(cr.inFill(0.0, 0.0));
assertFalse(cr.inFill(9.9, 9.9));
assertTrue(cr.inFill(10.1, 10.1));
assertTrue(cr.inFill(10.01, 10.01));
assertTrue(cr.inFill(90.0, 90.0));
assertFalse(cr.inFill(90.1, 90.1));
assertFalse(cr.inFill(90.01, 90.01));
assertFalse(cr.inFill(100.0, 100.0));
}
public final void testCairoInStroke() {
final Context cr;
final ImageSurface s;
s = new ImageSurface(Format.ARGB32, 100, 100);
cr = new Context(s);
cr.moveTo(10.0, 10.0);
cr.setLineWidth(1.0);
cr.rectangle(10.0, 10.0, 80.0, 80.0);
assertFalse(cr.inStroke(50.0, 50.0));
assertFalse(cr.inStroke(5.0, 5.0));
assertFalse(cr.inStroke(95.0, 95.0));
/*
* Corner cases.
*/
assertFalse(cr.inStroke(0.0, 0.0));
assertTrue(cr.inStroke(9.9, 9.9));
assertTrue(cr.inStroke(10.1, 10.1));
assertTrue(cr.inStroke(10.5, 10.5));
assertFalse(cr.inStroke(10.51, 10.51));
assertTrue(cr.inStroke(90.0, 90.0));
assertTrue(cr.inStroke(90.1, 90.1));
assertTrue(cr.inStroke(90.5, 90.5));
assertFalse(cr.inStroke(90.51, 90.51));
assertTrue(cr.inStroke(89.51, 89.51));
assertFalse(cr.inStroke(89.49, 89.49));
}
public final void testCairoFillClears() {
final Context cr;
final ImageSurface s;
s = new ImageSurface(Format.ARGB32, 100, 100);
cr = new Context(s);
cr.rectangle(10.0, 10.0, 80.0, 80.0);
assertTrue(cr.inFill(50.0, 50.0));
cr.fill();
assertFalse(cr.inFill(50.0, 50.0));
}
public final void testCairoFillPreserve() {
final Context cr;
final ImageSurface s;
s = new ImageSurface(Format.ARGB32, 100, 100);
cr = new Context(s);
cr.rectangle(10.0, 10.0, 80.0, 80.0);
assertTrue(cr.inFill(50.0, 50.0));
cr.fillPreserve();
assertTrue(cr.inFill(50.0, 50.0));
}
}
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