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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
package org.libreoffice;
import android.graphics.Bitmap;
import android.util.Log;
import org.libreoffice.kit.Document;
import org.libreoffice.kit.LibreOfficeKit;
import org.libreoffice.kit.Office;
import org.mozilla.gecko.gfx.BufferedCairoImage;
import org.mozilla.gecko.gfx.CairoImage;
import org.mozilla.gecko.gfx.LayerController;
import java.nio.ByteBuffer;
public class LOKitTileProvider implements TileProvider {
private static final String LOGTAG = LOKitTileProvider.class.getSimpleName();
public static int TILE_SIZE = 256;
public final Office mOffice;
public final Document mDocument;
private final LayerController mLayerController;
private final float mTileWidth;
private final float mTileHeight;
private final String mInputFile;
private float mDPI;
private float mWidthTwip;
private float mHeightTwip;
public LOKitTileProvider(LayerController layerController, String input) {
mLayerController = layerController;
mDPI = (float) LOKitShell.getDpi();
mTileWidth = pixelToTwip(TILE_SIZE, mDPI);
mTileHeight = pixelToTwip(TILE_SIZE, mDPI);
LibreOfficeKit.putenv("SAL_LOG=+WARN+INFO-INFO.legacy.osl-INFO.i18nlangtag");
LibreOfficeKit.init(LibreOfficeMainActivity.mAppContext);
mOffice = new Office(LibreOfficeKit.getLibreOfficeKitHandle());
mInputFile = input;
mDocument = mOffice.documentLoad(input);
if (checkDocument()) {
int parts = mDocument.getParts();
Log.i(LOGTAG, "Document parts: " + parts);
if (parts >= 1) {
mDocument.setPart(0);
}
for (int i = 0; i < parts; i++) {
String partName = mDocument.getPartName(i);
if (partName.isEmpty()) {
switch (mDocument.getDocumentType()) {
case Document.DOCTYPE_DRAWING:
case Document.DOCTYPE_TEXT:
partName = "Page " + (i + 1);
break;
case Document.DOCTYPE_SPREADSHEET:
partName = "Sheet " + (i + 1);
break;
case Document.DOCTYPE_PRESENTATION:
partName = "Slide " + (i + 1);
break;
case Document.DOCTYPE_OTHER:
default:
partName = "Part " + (i + 1);
break;
}
}
Log.i(LOGTAG, "Document part " + i + " name:'" + partName + "'");
mDocument.setPart(i);
final DocumentPartView partView = new DocumentPartView(i, partName, thumbnail(128));
LibreOfficeMainActivity.mAppContext.getDocumentPartView().add(partView);
}
LibreOfficeMainActivity.mAppContext.mMainHandler.post(new Runnable() {
@Override
public void run() {
LibreOfficeMainActivity.mAppContext.getDocumentPartViewListAdpater().notifyDataSetChanged();
}
});
}
}
private float twipToPixel(float input, float dpi) {
return input / 1440.0f * dpi;
}
private float pixelToTwip(float input, float dpi) {
return (input / dpi) * 1440.0f;
}
private boolean checkDocument() {
if (mDocument == null || !mOffice.getError().isEmpty()) {
Log.e(LOGTAG, "Error at loading: " + mOffice.getError());
return false;
}
mWidthTwip = mDocument.getDocumentWidth();
mHeightTwip = mDocument.getDocumentHeight();
if (mWidthTwip == 0 && mHeightTwip == 0) {
Log.e(LOGTAG, "Document size zero - last error: " + mOffice.getError());
} else {
Log.i(LOGTAG, "Document size: " + mDocument.getDocumentWidth() + " x " + mDocument.getDocumentHeight());
}
return true;
}
@Override
public int getPageWidth() {
return (int) twipToPixel(mWidthTwip, mDPI);
}
@Override
public int getPageHeight() {
return (int) twipToPixel(mHeightTwip, mDPI);
}
@Override
public boolean isReady() {
return mDocument != null;
}
@Override
public CairoImage createTile(float x, float y, float zoom) {
ByteBuffer buffer = ByteBuffer.allocateDirect(TILE_SIZE * TILE_SIZE * 4);
Bitmap bitmap = Bitmap.createBitmap(TILE_SIZE, TILE_SIZE, Bitmap.Config.ARGB_8888);
if (mDocument != null) {
float twipX = pixelToTwip(x, mDPI) / zoom;
float twipY = pixelToTwip(y, mDPI) / zoom;
float twipWidth = mTileWidth / zoom;
float twipHeight = mTileHeight / zoom;
mDocument.paintTile(buffer, TILE_SIZE, TILE_SIZE, (int) twipX, (int) twipY, (int) twipWidth, (int) twipHeight);
} else {
Log.e(LOGTAG, "Document is null!!");
}
bitmap.copyPixelsFromBuffer(buffer);
CairoImage image = new BufferedCairoImage(bitmap);
return image;
}
@Override
public Bitmap thumbnail(int size) {
int widthPixel = getPageWidth();
int heightPixel = getPageHeight();
if (widthPixel > heightPixel) {
double ratio = heightPixel / (double) widthPixel;
widthPixel = size;
heightPixel = (int) (widthPixel * ratio);
} else {
double ratio = widthPixel / (double) heightPixel;
heightPixel = size;
widthPixel = (int) (heightPixel * ratio);
}
ByteBuffer buffer = ByteBuffer.allocateDirect(widthPixel * heightPixel * 4);
mDocument.paintTile(buffer, widthPixel, heightPixel, 0, 0, (int) mWidthTwip, (int) mHeightTwip);
Bitmap bitmap = Bitmap.createBitmap(widthPixel, heightPixel, Bitmap.Config.ARGB_8888);
bitmap.copyPixelsFromBuffer(buffer);
if (bitmap == null) {
Log.w(LOGTAG, "Thumbnail not created!");
}
return bitmap;
}
@Override
public void close() {
Log.i(LOGTAG, "Document destroyed: " + mInputFile);
if (mDocument != null) {
mDocument.destroy();
}
}
@Override
public void changePart(int partIndex) {
mDocument.setPart(partIndex);
}
}
|
