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
|
/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.graphics;
import org.eclipse.swt.*;
public class Path {
/**
* the handle to the OS path resource
* (Warning: This field is platform dependent)
*/
public int handle;
/**
* the device where this font was created
*/
Device device;
public Path (Device device) {
if (device == null) device = Device.getDevice();
if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
this.device = device;
SWT.error(SWT.ERROR_NO_GRAPHICS_LIBRARY);
if (handle == 0) SWT.error(SWT.ERROR_NO_HANDLES);
if (device.tracking) device.new_Object(this);
}
public void addArc(float x, float y, float width, float height, float startAngle, float arcAngle) {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
}
public void addPath(Path path) {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (path.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
public void addRectangle(float x, float y, float width, float height) {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
}
public void addString(String string, float x, float y, Font font) {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (font == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
public void close() {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
}
public void curveTo(float cx1, float cy1, float cx2, float cy2, float x, float y) {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
}
public void getCurrentPoint(float[] point) {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (point == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (point.length < 2) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
public void lineTo(float x, float y) {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
}
public void moveTo(float x, float y) {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
}
public void quadTo(float cx, float cy, float x, float y) {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
}
public void dispose() {
if (handle == 0) return;
handle = 0;
if (device.tracking) device.dispose_Object(this);
device = null;
}
public boolean isDisposed() {
return handle == 0;
}
public String toString() {
if (isDisposed()) return "Path {*DISPOSED*}";
return "Path {" + handle + "}";
}
}
|
