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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
#include "Renderer.h"
#include <poppler/qt5/poppler-qt5.h>
#include <QThread>
class Link {
public:
Link(TextData *_data, Poppler::Link *_link) : data(_data), link(_link) { }
~Link() { delete data; }
TextData* getData() { return data; }
Poppler::Link* getLink() { return link; }
private:
TextData *data;
Poppler::Link *link;
};
static Poppler::Document *DOC;
QHash<int, QImage> loadingHash;
QHash<int, QList<Link*>> linkHash;
Renderer::Renderer(){
DOC = 0;
needpass = false;
pnum = 0;
degrees = 0;
}
Renderer::~Renderer(){
//qDeleteAll(loadingHash);
loadingHash.clear();
}
bool Renderer::loadMultiThread(){ return true; }
/*QJsonObject Renderer::properties(){
return QJsonObject(); //TO-DO
}*/
bool Renderer::loadDocument(QString path, QString password){
//qDebug() << "Load Document:" << path;
if(DOC!=0 && path!=docpath){
//Clear out the old document first
delete DOC;
DOC=0;
if(linkHash.size() > 0) {
foreach(QList<Link*> linkArray, linkHash) {
qDeleteAll(linkArray);
}
linkHash.clear();
}
needpass = false;
pnum=0;
docpath = path;
}
//Load the Document (if needed);
if(DOC==0){
//qDebug() << "Loading Document";
DOC = Poppler::Document::load(path);
docpath = path;
}
if(DOC==0){
qDebug() << "Could not open file:" << path;
return false;
}else if(DOC->isLocked()){
//qDebug() << "Document Locked";
needpass = true;
if(password.isEmpty()){ return false; } //stop here - need to get password from user before continuing
needpass = !DOC->unlock(QByteArray(), password.toLocal8Bit());
if(needpass){ return false; } //invalid password
}
//qDebug() << "Opening File:" << path;
doctitle = DOC->title();
if(doctitle.isEmpty()){ doctitle = path.section("/",-1); }
pnum = DOC->numPages();
//Setup the Document
Poppler::Page *PAGE = DOC->page(0);
if(PAGE!=0){
/*switch(PAGE->orientation()){
case Poppler::Page::Landscape:
WIDGET->setOrientation(QPageLayout::Landscape); break;
default:
WIDGET->setOrientation(QPageLayout::Portrait);
}*/
delete PAGE;
return true; //could load the first page
}
return false; //nothing to load
}
void Renderer::renderPage(int pagenum, QSize DPI, int degrees){
//qDebug() << "Render Page:" << pagenum << DPI << degrees;
if(DOC!=0){
Poppler::Page *PAGE = DOC->page(pagenum);
QImage img;
if(PAGE!=0){
Poppler::Page::Rotation rotation;
switch(degrees) {
case 90:
rotation = Poppler::Page::Rotation::Rotate90;
break;
case 180:
rotation = Poppler::Page::Rotation::Rotate180;
break;
case 270:
rotation = Poppler::Page::Rotation::Rotate270;
break;
default:
rotation = Poppler::Page::Rotation::Rotate0;
}
img = PAGE->renderToImage(DPI.width(), DPI.height(), -1, -1, -1, -1, rotation);
loadingHash.insert(pagenum, img);
QList<Link*> linkArray;
foreach(Poppler::Link *link, PAGE->links()) {
QString location;
if(link->linkType() == Poppler::Link::LinkType::Goto)
location = dynamic_cast<Poppler::LinkGoto*>(link)->fileName();
else if(link->linkType() == Poppler::Link::LinkType::Goto)
location = dynamic_cast<Poppler::LinkBrowse*>(link)->url();
Link *newLink = new Link(new TextData(link->linkArea(), pagenum, location), link);
linkArray.append(newLink);
}
linkHash.insert(pagenum, linkArray);
delete PAGE;
}
//qDebug() << "Done Render Page:" << pagenum << img.size();
}else{
loadingHash.insert(pagenum, QImage());
}
emit PageLoaded(pagenum);
}
QList<TextData*> Renderer::searchDocument(QString text, bool matchCase){
QList<TextData*> results;
for(int i = 0; i < pnum; i++) {
QList<Poppler::TextBox*> textList = DOC->page(i)->textList();
for(int j = 0; j < textList.size(); j++) {
if(textList[j]->text().contains(text,
(matchCase) ? Qt::CaseSensitive : Qt::CaseInsensitive)) {
TextData *t = new TextData(textList[j]->boundingBox(), i+1, text);
results.append(t);
}
}
}
return results;
}
QImage Renderer::imageHash(int pagenum) {
return loadingHash[pagenum];
}
int Renderer::hashSize() {
return loadingHash.keys().length();
}
void Renderer::clearHash() {
loadingHash.clear();
}
//Highlighting found text, bookmarks, and page properties disabled for Poppler
bool Renderer::supportsExtraFeatures() { return false; }
void Renderer::traverseOutline(void *, int) { }
void Renderer::handleLink(QString linkDest) {
Poppler::Link* trueLink;
foreach(QList<Link*> linkArray, linkHash) {
for(int i = 0; i < linkArray.size(); i++) {
Poppler::Link* link = linkArray[i]->getLink();
if(link->linkType() == Poppler::Link::LinkType::Browse) {
if(linkDest == dynamic_cast<Poppler::LinkBrowse*>(link)->url())
trueLink = link;
}else if(link->linkType() == Poppler::Link::LinkType::Goto) {
if(linkDest == dynamic_cast<Poppler::LinkGoto*>(link)->fileName())
trueLink = link;
}
}
}
if(trueLink) {
if(trueLink->linkType() == Poppler::Link::LinkType::Goto)
emit goToPosition(dynamic_cast<Poppler::LinkGoto*>(trueLink)->destination().pageNumber(), 0, 0);
}
}
TextData* Renderer::linkList(int pageNum, int entry) {
if(linkHash[pageNum].size() > 0)
return linkHash[pageNum][entry]->getData();
else
return 0;
}
QList<QString> Renderer::annotList(int pageNum, int entry) {
return QList<QString>() << QString() << QString();
}
int Renderer::linkSize(int pageNum) { return linkHash[pageNum].size(); }
int Renderer::annotSize(int pageNum) { return 0; }
QRectF Renderer::annotLoc(int pageNum, int entry) { return QRectF(); }
bool Renderer::isExternalLink(int pageNum, QString text) {
Poppler::Link* trueLink;
foreach(QList<Link*> linkArray, linkHash) {
for(int i = 0; i < linkArray.size(); i++) {
Poppler::Link* link = linkArray[i]->getLink();
if(link->linkType() == Poppler::Link::LinkType::Browse) {
if(text == dynamic_cast<Poppler::LinkBrowse*>(link)->url())
trueLink = link;
}else if(link->linkType() == Poppler::Link::LinkType::Goto) {
if(text == dynamic_cast<Poppler::LinkGoto*>(link)->fileName())
trueLink = link;
}
}
}
if(trueLink) {
if(trueLink->linkType() == Poppler::Link::LinkType::Goto)
return dynamic_cast<Poppler::LinkGoto*>(trueLink)->isExternal();
if(trueLink->linkType() == Poppler::Link::LinkType::Browse)
return true;
}
}
|
