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
|
#include "Renderer.h"
#include <QDateTime>
#include <mupdf/fitz.h>
//#include <pthread.h>
fz_document *DOC;
fz_context *CTX;
inline QString getTextInfo(QString str) {
char infoBuff[1000];
int size = DOC->lookup_metadata(CTX, DOC, ("info:"+str).toLocal8Bit().data(), infoBuff, 1000);
if(size != -1){ return QString::fromLatin1(infoBuff); }
return "";
}
/*void lock_mutex(void *user, int lock) {
pthread_mutex_t *mutex = (pthread_mutex_t *) user;
pthread_mutex_lock(&mutex[lock]);
}
void unlock_mutex(void *user, int lock) {
pthread_mutex_t *mutex = (pthread_mutex_t *) user;
pthread_mutex_unlock(&mutex[lock]);
}*/
Renderer::Renderer(){
/*pthread_mutex_t mutex[FZ_LOCK_MAX];
fz_locks_context locks;
locks.user = mutex;
locks.lock = lock_mutex;
locks.unlock = unlock_mutex;
for (int i = 0; i < FZ_LOCK_MAX; i++)
pthread_mutex_init(&mutex[i], NULL);*/
mutex = new QMutex();
DOC = 0;
//CTX = fz_new_context(NULL, &locks, FZ_STORE_UNLIMITED);
CTX = fz_new_context(NULL, NULL, FZ_STORE_UNLIMITED);
qDebug() << "Context created";
needpass = false;
}
Renderer::~Renderer(){
}
//bool Renderer::loadMultiThread(){ return true; }
QJsonObject Renderer::properties(){
QJsonObject jobj;
jobj.insert("title", getTextInfo("Title") );
jobj.insert("subject", getTextInfo("Subject") );
jobj.insert("author", getTextInfo("Author") );
jobj.insert("creator", getTextInfo("Creator") );
jobj.insert("producer", getTextInfo("Producer") );
jobj.insert("keywords", getTextInfo("Keywords") );
jobj.insert("dt_created", QDateTime::fromString( getTextInfo("CreationDate").left(16), "'D:'yyyyMMddHHmmss").toString() );
jobj.insert("dt_modified", QDateTime::fromString( getTextInfo("ModDate").left(16), "'D:'yyyyMMddHHmmss").toString() );
return jobj;
}
bool Renderer::loadDocument(QString path, QString password){
//first time through
if(DOC==0){
fz_register_document_handlers(CTX);
qDebug() << "Document handlers registered";
}else if(path!=docpath){
//fz_close_document(DOC);
//Clear out the old document first
delete DOC;
DOC=0;
needpass = false;
docpath = path;
}
if(DOC==0){
DOC = fz_open_document(CTX, path.toLocal8Bit().data());
docpath = path;
qDebug() << "File opened";
if(DOC==0){
qDebug() << "Could not open file:" << path;
return false;
}
needpass = (fz_needs_password(CTX, DOC) != 0);
}
if(needpass && password.isEmpty()){ return false; }
else if(needpass){
needpass = !fz_authenticate_password(CTX, DOC, password.toLocal8Bit());
if(needpass){ return false; } //incorrect password
}
qDebug() << "Password Check cleared";
//Could read/access the PDF - go ahead and load the info now
pnum = -1;
doctitle.clear();
//qDebug() << "Opening File:" << path;
QString title = getTextInfo("Subject");
if(!title.isNull())
doctitle = title;
else
doctitle = path.section("/",-1);
pnum = fz_count_pages(CTX, DOC);
//Setup the Document
fz_page *PAGE = fz_load_page(CTX, DOC, 0);
qDebug() << "Page Loaded";
//Possibly check Page orientation";
return (PAGE);
}
//Consider rendering through a display list
QImage Renderer::renderPage(int pagenum, QSize DPI){
QImage img;
fz_matrix matrix;
fz_pixmap *pixmap = nullptr;
fz_scale(&matrix, DPI.width()/96.0, DPI.height()/96.0);
//fz_context *ctx = fz_clone_context(CTX);
mutex->lock();
fz_try(CTX) {
pixmap = fz_new_pixmap_from_page_number(CTX, DOC, pagenum, &matrix, fz_device_rgb(CTX), 0);
}fz_catch(CTX){
qDebug() << "Error when rendering page using MuPDF";
}
mutex->unlock();
img = QImage(pixmap->samples, pixmap->w, pixmap->h, pixmap->stride, QImage::Format_RGB888);
qDebug() << "Render Page:" << pagenum;
return img;
}
QList<TextData*> Renderer::searchDocument(QString text, bool matchCase){
fz_rect rectBuffer[1000];
QList<TextData*> results;
for(int i = 0; i < pnum; i++) {
int count = fz_search_page_number(CTX, DOC, i, text.toLatin1().data(), rectBuffer, 1000);
//qDebug() << "Page " << i+1 << ": Count, " << count;
for(int j = 0; j < count; j++) {
QRect rect(rectBuffer[j].x0, rectBuffer[j].y0, rectBuffer[j].x1-rectBuffer[j].x0, rectBuffer[j].y1 - rectBuffer[j].y0);
TextData *t = new TextData(rect, i+1, text);
//MuPDF search does not match case, so retrieve the exact text at the location found and determine whether or not it matches the case of the search text if the user selected to match case
if(matchCase){
fz_stext_page *sPage = fz_new_stext_page_from_page_number(CTX, DOC, i, NULL);
QString currentStr = QString(fz_copy_selection(CTX, sPage, *fz_rect_min(&rectBuffer[j]), *fz_rect_max(&rectBuffer[j]), false));
if(currentStr.contains(text, Qt::CaseSensitive)){ results.append(t); }
}else{
results.append(t);
}
}
}
return results;
}
|
