summaryrefslogtreecommitdiffstats
path: root/digikam/libs/widgets/imageplugins/imageregionwidget.cpp
blob: 470a908443ce97525e1e9e646e487536c78ff6d9 (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
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
/* ============================================================
 *
 * This file is a part of digiKam project
 * http://www.digikam.org
 * 
 * Date        : 2004-08-17
 * Description : a widget to draw an image clip region.
 * 
 * Copyright (C) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * 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, or (at your option)
 * any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * ============================================================ */

// C++ includes.

#include <cmath>

// TQt includes.

#include <tqpainter.h>
#include <tqpixmap.h>
#include <tqtimer.h>
#include <tqpainter.h>
#include <tqpen.h>
#include <tqimage.h>
#include <tqbrush.h>
#include <tqfont.h> 
#include <tqfontmetrics.h> 
#include <tqpointarray.h>

// KDE includes.

#include <kstandarddirs.h>
#include <kcursor.h>
#include <kglobal.h>
#include <kapplication.h>

// Local includes.

#include "ddebug.h"
#include "imageiface.h"
#include "imageregionwidget.h"
#include "imageregionwidget.moc"

namespace Digikam
{

class ImageRegionWidgetPriv
{

public:

    ImageRegionWidgetPriv()
    {
        iface        = 0;
        separateView = ImageRegionWidget::SeparateViewVertical;
    }

    int          separateView;
    int          xpos;
    int          ypos;

    TQPixmap      pixmapRegion;          // Pixmap of current region to render.
    
    TQPointArray  hightlightPoints;
    
    DImg         image;                 // Entire content image to render pixmap.
    
    ImageIface  *iface;
};

ImageRegionWidget::ImageRegionWidget(int wp, int hp, TQWidget *tqparent, bool scrollBar)
                 : PreviewWidget(tqparent)
{
    d = new ImageRegionWidgetPriv;
    d->iface = new ImageIface(0, 0);
    d->image = d->iface->getOriginalImg()->copy(); 

    setMinimumSize(wp, hp);
    setBackgroundColor(tqcolorGroup().background());

    if( !scrollBar ) 
    {
       setVScrollBarMode( TQScrollView::AlwaysOff );
       setHScrollBarMode( TQScrollView::AlwaysOff );
    }
    
    connect(this, TQT_SIGNAL(signalZoomFactorChanged(double)),
            this, TQT_SLOT(slotZoomFactorChanged()));
}

ImageRegionWidget::~ImageRegionWidget()
{
    if (d->iface) delete d->iface;
    delete d;
}

void ImageRegionWidget::resizeEvent(TQResizeEvent* e)
{
    if (!e) return;

    TQScrollView::resizeEvent(e);

    // NOTE: We will always adapt the min. zoom factor to the visible size of canvas
 
    double srcWidth  = previewWidth();
    double srcHeight = previewHeight();
    double dstWidth  = contentsRect().width();
    double dstHeight = contentsRect().height();
    double zoom      = TQMAX(dstWidth/srcWidth, dstHeight/srcHeight); 

    setZoomMin(zoom);
    setZoomMax(zoom*12.0);
    setZoomFactor(zoom);
}

int ImageRegionWidget::previewWidth()
{
    return d->image.width();
}

int ImageRegionWidget::previewHeight()
{
    return d->image.height();
}

bool ImageRegionWidget::previewIsNull()
{
    return d->image.isNull();
}

void ImageRegionWidget::resetPreview()
{
    d->image.reset();
}

void ImageRegionWidget::paintPreview(TQPixmap *pix, int sx, int sy, int sw, int sh)
{
    DImg img = d->image.smoothScaleSection(sx, sy, sw, sh, tileSize(), tileSize());    
    TQPixmap pix2 = d->iface->convertToPixmap(img);
    bitBlt(pix, 0, 0, &pix2, 0, 0);
}

void ImageRegionWidget::setHighLightPoints(const TQPointArray& pointsList)
{
    d->hightlightPoints = pointsList;
    repaintContents(false);   
}

void ImageRegionWidget::slotZoomFactorChanged()
{
    emit signalContentsMovedEvent(true);
}

void ImageRegionWidget::slotSeparateViewToggled(int mode)
{
    d->separateView = mode;
    updateContentsSize();
    slotZoomFactorChanged(); 
}

TQRect ImageRegionWidget::getImageRegion()
{
    TQRect region;    

    switch (d->separateView)
    {
        case SeparateViewVertical:
        case SeparateViewHorizontal:
        case SeparateViewNone:
            region = TQRect(contentsX(), contentsY(), visibleWidth(), visibleHeight()); 
            break;
        case SeparateViewDuplicateVert:
            region = TQRect(contentsX(), contentsY(), visibleWidth()/2, visibleHeight());  
            break;
        case SeparateViewDuplicateHorz:
            region = TQRect(contentsX(), contentsY(), visibleWidth(), visibleHeight()/2);  
            break;
    }
        
    return region;   
}

void ImageRegionWidget::viewportPaintExtraData()
{   
    if (!m_movingInProgress && !d->pixmapRegion.isNull())
    {
        TQPainter p(viewport());
        TQRect region = getLocalTargetImageRegion();
        TQRect rt(contentsToViewport(region.topLeft()), contentsToViewport(region.bottomRight())); 

        region = getLocalImageRegionToRender();
        TQRect ro(contentsToViewport(region.topLeft()), contentsToViewport(region.bottomRight())); 

        bitBlt(viewport(), rt.x(), rt.y(), &d->pixmapRegion, 0, 0, rt.width(), rt.height());

        // Drawing separate view.
        
        switch (d->separateView)
        {
            case SeparateViewVertical:
            case SeparateViewDuplicateVert:
            {
                p.setPen(TQPen(TQt::white, 2, TQt::SolidLine));
                p.drawLine(rt.topLeft().x(),    rt.topLeft().y(),
                           rt.bottomLeft().x(), rt.bottomLeft().y());
                p.setPen(TQPen(TQt::red, 2, TQt::DotLine));
                p.drawLine(rt.topLeft().x(),    rt.topLeft().y()+1,
                           rt.bottomLeft().x(), rt.bottomLeft().y()-1);
                            
                p.setPen(TQPen(TQt::red, 1)) ;                    
                TQFontMetrics fontMt = p.fontMetrics();
                
                TQString text(i18n("Target"));
                TQRect textRect;
                TQRect fontRect = fontMt.boundingRect(0, 0, contentsWidth(), contentsHeight(), 0, text); 
                textRect.setTopLeft(TQPoint(rt.topLeft().x()+20, rt.topLeft().y()+20));
                textRect.setSize( TQSize(fontRect.width()+2, fontRect.height()+2) );
                p.fillRect(textRect, TQBrush(TQColor(250, 250, 255)) );
                p.drawRect(textRect);
                p.drawText(textRect, TQt::AlignCenter, text);
                            
                text = i18n("Original");                    
                fontRect = fontMt.boundingRect(0, 0, contentsWidth(), contentsHeight(), 0, text); 

                if (d->separateView == SeparateViewVertical)
                    ro.moveBy(-ro.width(), 0);

                textRect.setTopLeft(TQPoint(ro.topLeft().x()+20, ro.topLeft().y()+20));
                textRect.setSize( TQSize(fontRect.width()+2, fontRect.height()+2 ) );       
                p.fillRect(textRect, TQBrush(TQColor(250, 250, 255)) );
                p.drawRect(textRect);
                p.drawText(textRect, TQt::AlignCenter, text);
                break;
            }
            case SeparateViewHorizontal:
            case SeparateViewDuplicateHorz:
            {
                p.setPen(TQPen(TQt::white, 2, TQt::SolidLine));
                p.drawLine(rt.topLeft().x()+1,  rt.topLeft().y(),
                           rt.topRight().x()-1, rt.topRight().y());
                p.setPen(TQPen(TQt::red, 2, TQt::DotLine));
                p.drawLine(rt.topLeft().x(),   rt.topLeft().y(),
                           rt.topRight().x(), rt.topRight().y());
                            
                p.setPen(TQPen(TQt::red, 1)) ;                    
                TQFontMetrics fontMt = p.fontMetrics();
                
                TQString text(i18n("Target"));
                TQRect textRect;
                TQRect fontRect = fontMt.boundingRect(0, 0, contentsWidth(), contentsHeight(), 0, text); 
                textRect.setTopLeft(TQPoint(rt.topLeft().x()+20, rt.topLeft().y()+20));
                textRect.setSize( TQSize(fontRect.width()+2, fontRect.height()+2) );
                p.fillRect(textRect, TQBrush(TQColor(250, 250, 255)) );
                p.drawRect(textRect);
                p.drawText(textRect, TQt::AlignCenter, text);
                            
                text = i18n("Original");                    
                fontRect = fontMt.boundingRect(0, 0, contentsWidth(), contentsHeight(), 0, text);

                if (d->separateView == SeparateViewHorizontal)
                    ro.moveBy(0, -ro.height());

                textRect.setTopLeft(TQPoint(ro.topLeft().x()+20, ro.topLeft().y()+20));
                textRect.setSize( TQSize(fontRect.width()+2, fontRect.height()+2 ) );       
                p.fillRect(textRect, TQBrush(TQColor(250, 250, 255)) );
                p.drawRect(textRect);
                p.drawText(textRect, TQt::AlignCenter, text);
                break;
            }
        }
        
        // Drawing HighLighted points.
        
        if (!d->hightlightPoints.isEmpty())
        {
            TQPoint pt;
            TQRect  hpArea;
            
            for (int i = 0 ; i < d->hightlightPoints.count() ; i++)
            {
                pt = d->hightlightPoints.point(i);
                
                if ( getImageRegionToRender().tqcontains(pt) )
                {
                    int x = (int)(((double)pt.x() * tileSize()) / floor(tileSize() / zoomFactor()));
                    int y = (int)(((double)pt.y() * tileSize()) / floor(tileSize() / zoomFactor()));

                    TQPoint hp(contentsToViewport(TQPoint(x, y)));
                    hpArea.setSize(TQSize((int)(16*zoomFactor()), (int)(16*zoomFactor())));
                    hpArea.moveCenter(hp);

                    p.setPen(TQPen(TQt::white, 2, TQt::SolidLine));
                    p.drawLine(hp.x(), hpArea.y(), 
                               hp.x(), hp.y()-(int)(3*zoomFactor()));
                    p.drawLine(hp.x(), hp.y()+(int)(3*zoomFactor()), 
                               hp.x(), hpArea.bottom());
                    p.drawLine(hpArea.x(),                   hp.y(), 
                               hp.x()-(int)(3*zoomFactor()), hp.y());
                    p.drawLine(hp.x()+(int)(3*zoomFactor()), hp.y(), 
                               hpArea.right(),                hp.y());

                    p.setPen(TQPen(TQt::red, 2, TQt::DotLine));
                    p.drawLine(hp.x(), hpArea.y(), 
                               hp.x(), hp.y()-(int)(3*zoomFactor()));
                    p.drawLine(hp.x(), hp.y()+(int)(3*zoomFactor()), 
                               hp.x(), hpArea.bottom());
                    p.drawLine(hpArea.x(),                   hp.y(), 
                               hp.x()-(int)(3*zoomFactor()), hp.y());
                    p.drawLine(hp.x()+(int)(3*zoomFactor()), hp.y(), 
                               hpArea.right(),                hp.y());
                }
            }
        }
        p.end();
    }
}

void ImageRegionWidget::setCenterContentsPosition()
{
    center(contentsWidth()/2, contentsHeight()/2);    
    slotZoomFactorChanged();
}

void ImageRegionWidget::setContentsPosition(int x, int y, bool targetDone)
{
    if( targetDone )
        m_movingInProgress = false;

    setContentsPos(x, y);    
    
    if( targetDone )
       slotZoomFactorChanged();
}

void ImageRegionWidget::backupPixmapRegion()
{
    d->pixmapRegion = TQPixmap();
}

void ImageRegionWidget::restorePixmapRegion()
{
    m_movingInProgress = true;
    viewport()->tqrepaint(false);
}

void ImageRegionWidget::updatePreviewImage(DImg *img)
{
    DImg image = img->copy();
    TQRect r    = getLocalImageRegionToRender();
    image.resize(r.width(), r.height());

    // Because image plugins are tool witch only work on image data, the DImg container
    // do not contain metadata from original image. About Color Managed View, we need to 
    // restore the embedded ICC color profile. 
    image.setICCProfil(d->image.getICCProfil());
    d->pixmapRegion = d->iface->convertToPixmap(image);
}

DImg ImageRegionWidget::getImageRegionImage()
{
    return (d->image.copy(getImageRegionToRender()));
}

TQRect ImageRegionWidget::getImageRegionToRender()
{
    TQRect r = getLocalImageRegionToRender();

    int x = (int)(((double)r.x()      / tileSize()) * floor(tileSize() / zoomFactor()));
    int y = (int)(((double)r.y()      / tileSize()) * floor(tileSize() / zoomFactor()));
    int w = (int)(((double)r.width()  / tileSize()) * floor(tileSize() / zoomFactor()));   
    int h = (int)(((double)r.height() / tileSize()) * floor(tileSize() / zoomFactor()));

    TQRect rect(x, y, w, h);
    return (rect);
}

TQRect ImageRegionWidget::getLocalImageRegionToRender()
{
    TQRect region;
    
    if (d->separateView == SeparateViewVertical)
    {
        region = TQRect((int)ceilf(contentsX()+visibleWidth()/2.0), contentsY(), 
                       (int)ceilf(visibleWidth()/2.0),             visibleHeight());
    }
    else if (d->separateView == SeparateViewHorizontal)
    {
        region = TQRect(contentsX(),    (int)ceilf(contentsY()+visibleHeight()/2.0), 
                       visibleWidth(), (int)ceilf(visibleHeight()/2.0));
    }
    else if (d->separateView == SeparateViewDuplicateVert)
    {
        region = TQRect(contentsX(),                    contentsY(), 
                       (int)ceilf(visibleWidth()/2.0), visibleHeight());
    }
    else if (d->separateView == SeparateViewDuplicateHorz)
    {
        region = TQRect(contentsX(),    contentsY(), 
                       visibleWidth(), (int)ceilf(visibleHeight()/2.0));
    }
    else 
    {
        region = TQRect(contentsX(),    contentsY(), 
                       visibleWidth(), visibleHeight());
    }
    
    return (region);
}

TQRect ImageRegionWidget::getLocalTargetImageRegion()
{
    TQRect region = getLocalImageRegionToRender();
    
    if (d->separateView == SeparateViewDuplicateVert)
        region.moveBy(region.width(), 0);
    else if (d->separateView == SeparateViewDuplicateHorz)
        region.moveBy(0, region.height());
    
    return region;
}

void ImageRegionWidget::setContentsSize()
{
    switch (d->separateView)
    {
        case SeparateViewVertical:
        case SeparateViewHorizontal:
        case SeparateViewNone:
        {
            PreviewWidget::setContentsSize();
            break;
        }
        case SeparateViewDuplicateVert:
        {
            resizeContents(zoomWidth()+visibleWidth()/2, zoomHeight());
            break;
        }
        case SeparateViewDuplicateHorz:
        {
            resizeContents(zoomWidth(), zoomHeight()+visibleHeight()/2);
            break;
        }
        default:
            DWarning() << "Unknown separation view specified" << endl;
    }
}

void ImageRegionWidget::contentsWheelEvent(TQWheelEvent *e)
{
    e->accept();

    if (e->state() & TQt::ControlButton)
    {
        if (e->delta() < 0 && !maxZoom())
            slotIncreaseZoom();
        else if (e->delta() > 0 && !minZoom())
            slotDecreaseZoom();
        return;
    }
}

}  // NameSpace Digikam