summaryrefslogtreecommitdiffstats
path: root/kpdf/core/page.cpp
blob: 630c9480734d0b870bc350838106fb0d95b75703 (plain)
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
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
/***************************************************************************
 *   Copyright (C) 2004 by Enrico Ros <eros.kde@email.it>                  *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

// qt/kde includes
#include <tqpixmap.h>
#include <tqstring.h>
#include <tqmap.h>
#include <kdebug.h>

// local includes
#include "page.h"
#include "pagetransition.h"
#include "link.h"
#include "conf/settings.h"
#include "xpdf/TextOutputDev.h"


/** class KPDFPage **/

KPDFPage::KPDFPage( uint page, float w, float h, int r )
    : m_number( page ), m_rotation( r ), m_width( w ), m_height( h ),
    m_bookmarked( false ), m_text( 0 ), m_transition( 0 )
{
    setRotation( r );
}

KPDFPage::~KPDFPage()
{
    deletePixmapsAndRects();
    deleteHighlights();
    delete m_text;
    delete m_transition;
}

void KPDFPage::rotate90degrees()
    {
        float w = m_width;
        m_width = m_height;
        m_height = w;

        // avoid Division-By-Zero problems in the program

        if ( m_width <= 0 )
        m_width = 1;
        if ( m_height <= 0 )
        m_height = 1;

        deletePixmapsAndRects();
    }

void KPDFPage::setRotation( int r )
{
    // if landscape swap width <-> height (rotate 90deg CCW)
    if ( r == 90 || r == 270 )
    {
        float w = m_width;
        m_width = m_height;
        m_height = w;
    }
    // avoid Division-By-Zero problems in the program
    if ( m_width <= 0 )
        m_width = 1;
    if ( m_height <= 0 )
        m_height = 1;

    deletePixmapsAndRects();
}

bool KPDFPage::hasPixmap( int id, int width, int height ) const
{
    if ( !m_pixmaps.tqcontains( id ) )
        return false;
    if ( width == -1 || height == -1 )
        return true;
    TQPixmap * p = m_pixmaps[ id ];
    return p ? ( p->width() == width && p->height() == height ) : false;
}

bool KPDFPage::hasSearchPage() const
{
    return m_text != 0;
}

bool KPDFPage::hasBookmark() const
{
    return m_bookmarked;
}

bool KPDFPage::hasObjectRect( double x, double y ) const
{
    if ( m_rects.count() < 1 )
        return false;
    TQValueList< ObjectRect * >::const_iterator it = m_rects.begin(), end = m_rects.end();
    for ( ; it != end; ++it )
        if ( (*it)->tqcontains( x, y ) )
            return true;
    return false;
}

bool KPDFPage::hasHighlights( int s_id ) const
{
    // simple case: have no highlights
    if ( m_highlights.isEmpty() )
        return false;
    // simple case: we have highlights and no id to match
    if ( s_id == -1 )
        return true;
    // iterate on the highlights list to find an entry by id
    TQValueList< HighlightRect * >::const_iterator it = m_highlights.begin(), end = m_highlights.end();
    for ( ; it != end; ++it )
        if ( (*it)->s_id == s_id )
            return true;
    return false;
}

bool KPDFPage::hasTransition() const
{
    return m_transition != 0;
}


NormalizedRect * KPDFPage::findText( const TQString & text, bool strictCase, NormalizedRect * lastRect ) const
{
    if ( text.isEmpty() )
        return 0;

    // create a xpf's Unicode (unsigned int) array for the given text
    const TQChar * str = text.tqunicode();
    int len = text.length();
    TQMemArray<Unicode> u(len);
    for (int i = 0; i < len; ++i)
        u[i] = str[i].tqunicode();

    // find out the direction of search
    enum SearchDir { FromTop, NextMatch, PrevMatch } dir = lastRect ? NextMatch : FromTop;
    double sLeft, sTop, sRight, sBottom;
    if ( dir == NextMatch )
    {
        sLeft = lastRect->left * m_width;
        sTop = lastRect->top * m_height;
        sRight = lastRect->right * m_width;
        sBottom = lastRect->bottom * m_height;
    }

    // this loop is only for 'bad case' matches
    bool found = false;
    while ( !found )
    {
        if ( dir == FromTop )
            found = m_text->findText( const_cast<Unicode*>(static_cast<const Unicode*>(u)), len, gTrue, gTrue, gFalse, gFalse, strictCase, gFalse, &sLeft, &sTop, &sRight, &sBottom );
        else if ( dir == NextMatch )
            found = m_text->findText( const_cast<Unicode*>(static_cast<const Unicode*>(u)), len, gFalse, gTrue, gTrue, gFalse, strictCase, gFalse, &sLeft, &sTop, &sRight, &sBottom );
        else if ( dir == PrevMatch )
            // FIXME: this doesn't work as expected (luckily backward search isn't yet used)
	    // TODO: check if the new xpdf 3.01 code is able of searching backwards
            found = m_text->findText( const_cast<Unicode*>(static_cast<const Unicode*>(u)), len, gTrue, gFalse, gFalse, gTrue, strictCase, gTrue, &sLeft, &sTop, &sRight, &sBottom );

        // if not found (even in case unsensitive search), terminate
        if ( !found )
            break;
    }

    // if the page was found, return a new normalizedRect
    if ( found )
        return new NormalizedRect( sLeft / m_width, sTop / m_height, sRight / m_width, sBottom / m_height );
    return 0;
}

const TQString KPDFPage::getText( const NormalizedRect & rect ) const
{
    if ( !m_text )
        return TQString();
    int left = (int)( rect.left * m_width ),
        top = (int)( rect.top * m_height ),
        right = (int)( rect.right * m_width ),
        bottom = (int)( rect.bottom * m_height );
    GString * text = m_text->getText( left, top, right, bottom );
    TQString result = TQString::fromUtf8( text->getCString() );
    delete text;
    return result; 
}

const ObjectRect * KPDFPage::hasObject( ObjectRect::ObjectType type, double x, double y ) const
{
    TQValueList< ObjectRect * >::const_iterator it = m_rects.begin(), end = m_rects.end();
    for ( ; it != end; ++it )
        if ( (*it)->tqcontains( x, y ) )
            if ((*it)->objectType() == type) return *it;
    return 0;
}

const KPDFPageTransition * KPDFPage::getTransition() const
{
    return m_transition;
}


void KPDFPage::setPixmap( int id, TQPixmap * pixmap )
{
    if ( m_pixmaps.tqcontains( id ) )
        delete m_pixmaps[id];
    m_pixmaps[id] = pixmap;
}

void KPDFPage::setSearchPage( TextPage * tp )
{
    delete m_text;
    m_text = tp;
}

void KPDFPage::setBookmark( bool state )
{
    m_bookmarked = state;
}

void KPDFPage::setObjectRects( const TQValueList< ObjectRect * > rects )
{
    TQValueList< ObjectRect * >::iterator it = m_rects.begin(), end = m_rects.end();
    for ( ; it != end; ++it )
        delete *it;
    m_rects = rects;
}

void KPDFPage::setHighlight( int s_id, NormalizedRect * &rect, const TQColor & color )
{
    // create a HighlightRect descriptor taking values from params
    HighlightRect * hr = new HighlightRect();
    hr->s_id = s_id;
    hr->color = color;
    hr->left = rect->left;
    hr->top = rect->top;
    hr->right = rect->right;
    hr->bottom = rect->bottom;
    // append the HighlightRect to the list
    m_highlights.append( hr );
    // delete old object and change reference
    delete rect;
    rect = hr;
}

void KPDFPage::setTransition( KPDFPageTransition * transition )
{
    delete m_transition;
    m_transition = transition;
}

void KPDFPage::deletePixmap( int id )
{
    if ( m_pixmaps.tqcontains( id ) )
    {
        delete m_pixmaps[ id ];
        m_pixmaps.remove( id );
    }
}

void KPDFPage::deletePixmapsAndRects()
{
    // delete all stored pixmaps
    TQMap<int,TQPixmap *>::iterator it = m_pixmaps.begin(), end = m_pixmaps.end();
    for ( ; it != end; ++it )
        delete *it;
    m_pixmaps.clear();
    // delete ObjectRects
    TQValueList< ObjectRect * >::iterator rIt = m_rects.begin(), rEnd = m_rects.end();
    for ( ; rIt != rEnd; ++rIt )
        delete *rIt;
    m_rects.clear();
}

void KPDFPage::deleteHighlights( int s_id )
{
    // delete highlights by ID
    TQValueList< HighlightRect * >::iterator it = m_highlights.begin(), end = m_highlights.end();
    while ( it != end )
    {
        HighlightRect * highlight = *it;
        if ( s_id == -1 || highlight->s_id == s_id )
        {
            it = m_highlights.remove( it );
            delete highlight;
        }
        else
            ++it;
    }
}


/** class NormalizedRect **/

NormalizedRect::NormalizedRect()
    : left( 0.0 ), top( 0.0 ), right( 0.0 ), bottom( 0.0 ) {}

NormalizedRect::NormalizedRect( double l, double t, double r, double b )
    // note: check for swapping coords?
    : left( l ), top( t ), right( r ), bottom( b ) {}

NormalizedRect::NormalizedRect( const TQRect & r, double xScale, double yScale )
    : left( (double)r.left() / xScale ), top( (double)r.top() / yScale ),
    right( (double)r.right() / xScale ), bottom( (double)r.bottom() / yScale ) {}

bool NormalizedRect::tqcontains( double x, double y ) const
{
    return x >= left && x <= right && y >= top && y <= bottom;
}

bool NormalizedRect::intersects( const NormalizedRect & r ) const
{
    return (r.left < right) && (r.right > left) && (r.top < bottom) && (r.bottom > top);
}

bool NormalizedRect::intersects( double l, double t, double r, double b ) const
{
    return (l < right) && (r > left) && (t < bottom) && (b > top);
}

TQRect NormalizedRect::tqgeometry( int xScale, int yScale ) const
{
    int l = (int)( left * xScale ),
        t = (int)( top * yScale ),
        r = (int)( right * xScale ),
        b = (int)( bottom * yScale );
    return TQRect( l, t, r - l + 1, b - t + 1 );
}


/** class ObjectRect **/

ObjectRect::ObjectRect( double l, double t, double r, double b, ObjectType type, void * pnt )
    // assign coordinates swapping them if negative width or height
    : NormalizedRect( r > l ? l : r, b > t ? t : b, r > l ? r : l, b > t ? b : t ),
    m_objectType( type ), m_pointer( pnt )
{
}

ObjectRect::~ObjectRect()
{
    if ( !m_pointer )
        return;

    if ( m_objectType == Link )
        delete static_cast<KPDFLink*>( m_pointer );
    else
        kdDebug() << "Object deletion not implemented for type '" << m_objectType << "' ." << endl;
}