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
|
package example;
import com.artifex.mupdf.fitz.*;
import java.awt.*;
import java.awt.image.*;
public class PageCanvas extends java.awt.Canvas
{
protected Page page;
protected BufferedImage image;
protected float mScale = 1.0f;
private float mRetinaScale = 1.0f;
private static boolean mShowAnnots = false;
public static BufferedImage imageFromPixmap(Pixmap pixmap) {
int w = pixmap.getWidth();
int h = pixmap.getHeight();
BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
image.setRGB(0, 0, w, h, pixmap.getPixels(), 0, w);
return image;
}
public static BufferedImage imageFromPageWithDevice(Page page, Matrix ctm) {
// make a blank pixmap
Rect bbox = page.getBounds();
bbox.transform(ctm);
Pixmap pixmap = new Pixmap(ColorSpace.DeviceBGR, bbox, true);
pixmap.clear(255);
// make a device
DrawDevice dev = new DrawDevice(pixmap);
// run page contents (without annotations)
page.runPageContents(dev, ctm, new Cookie());
// run annotations
if (mShowAnnots)
{
Annotation annotations[] = page.getAnnotations();
if (annotations != null && annotations.length>0)
{
for (Annotation annot : annotations) {
annot.run(dev, ctm, new Cookie());
}
}
}
dev.destroy();
BufferedImage image = imageFromPixmap(pixmap);
pixmap.destroy();
return image;
}
public static BufferedImage imageFromPage(Page page, Matrix ctm) {
Pixmap pixmap = page.toPixmap(ctm, ColorSpace.DeviceBGR, true);
BufferedImage image = imageFromPixmap(pixmap);
pixmap.destroy();
return image;
}
public PageCanvas(Page page_, float nativeScale) {
mRetinaScale = nativeScale;
mScale = mRetinaScale;
this.page = page_;
run();
}
private void run()
{
Matrix ctm = new Matrix();
ctm.scale(mScale);
image = imageFromPageWithDevice(page, ctm);
repaint();
}
public Dimension getPreferredSize() {
return new Dimension(image.getWidth(), image.getHeight());
}
public Dimension getMinimumSize() {
return getPreferredSize();
}
public Dimension getMaximumSize() {
return getPreferredSize();
}
public void zoomIn() {
if (mScale < 10) {
mScale += 0.25f;
run();
}
}
public void zoomOut() {
if (mScale > 0.25f) {
mScale -= 0.25f;
run();
}
}
public void toggleAnnots() {
mShowAnnots = !mShowAnnots;
run();
}
public void paint(Graphics g)
{
float scale = 1.0f;
scale = 1/mRetinaScale;
final Graphics2D g2d = (Graphics2D)g.create(0, 0, image.getWidth(), image.getHeight());
g2d.scale(scale, scale);
g2d.drawImage(image, 0, 0, null);
g2d.dispose();
}
}
|
