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
|
// MouseWheelListenerTest.java --
// Copyright (C) 2011 Pavel Tisnovsky <ptisnovs@redhat.com>
// This file is part of Mauve.
// Mauve is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
// Mauve 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
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Mauve; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 51 Franklin Street,
// Fifth Floor, Boston, MA 02110-1301 USA.
// Tags: GUI
// Uses: ../LocationTests
package gnu.testlet.java.awt.Canvas;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
import gnu.testlet.java.awt.LocationTests;
import java.awt.*;
import java.awt.event.*;
/**
* Check if MouseWheelListener could be registered for an AWT Canvas
* and if action is performed when mouse wheel is rotated up and down.
*/
public class MouseWheelListenerTest
extends Panel
implements Testlet
{
// these flags are set by MouseWheelListener
boolean mouseWheelScrollUpFlag = false;
boolean mouseWheelScrollDownFlag = false;
/**
* Runs the test using the specified harness.
*
* @param harness the test harness (<code>null</code> not permitted).
*/
public void test(TestHarness harness)
{
setBackground(Color.red);
Frame frame = new Frame();
Canvas canvas = new Canvas();
canvas.setBackground(Color.blue);
canvas.setSize(100,100);
add(canvas);
// register new mouse wheel listener
canvas.addMouseWheelListener(
new MouseWheelListener() {
public void mouseWheelMoved(MouseWheelEvent e)
{
// figure out if mouse wheel is scrolled up or down
mouseWheelScrollUpFlag |= e.getWheelRotation() < 0;
mouseWheelScrollDownFlag |= e.getWheelRotation() > 0;
}
}
);
frame.add(this);
frame.pack();
frame.show();
// AWT robot is used performing some actions
// also to wait for all
// widgets to stabilize theirs size and position.
Robot robot = harness.createRobot();
// we should wait a moment before the computations
// and pixel checks
robot.waitForIdle();
robot.delay(1000);
// compute absolute coordinations of canvas on a screen
Rectangle bounds = canvas.getBounds();
Point loc = frame.getLocationOnScreen();
Insets i = frame.getInsets();
bounds.x += i.left + loc.x;
bounds.y += i.top + loc.y;
// position of checked pixel
int checkedPixelX = bounds.x + bounds.width / 2;
int checkedPixelY = bounds.y + bounds.height / 2;
// move the mouse cursor to a tested pixel to show users what's checked
robot.mouseMove(checkedPixelX, checkedPixelY);
robot.waitForIdle();
robot.delay(250);
robot.mouseWheel(+1);
robot.delay(250);
robot.mouseWheel(-1);
robot.delay(250);
// There is a delay to avoid any race conditions
// and so user can see frame
robot.waitForIdle();
robot.delay(1000);
// it's necesarry to clean up the component from desktop
frame.dispose();
// check if all actions were performed
harness.check(mouseWheelScrollUpFlag);
harness.check(mouseWheelScrollDownFlag);
}
/**
* Paint method for our implementation of a Panel
*/
public void paint(Graphics g)
{
Image offScr = createImage(getSize().width, getSize().height);
Graphics offG = offScr.getGraphics();
offG.setClip(0, 0, getSize().width, getSize().height);
super.paint(offG);
g.drawImage(offScr, 0, 0, null);
offG.dispose();
}
}
|
