summaryrefslogtreecommitdiffstats
path: root/kolourpaint/tools/kptoolrectangle.cpp
blob: 2c717feeef97b51fdc1e6a1d793f4a6d3b9de7c1 (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
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638

/*
   Copyright (c) 2003,2004,2005 Clarence Dang <[email protected]>
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions
   are met:

   1. Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/


#define DEBUG_KP_TOOL_RECTANGLE 0

#include <tqbitmap.h>
#include <tqcursor.h>
#include <tqevent.h>
#include <tqpainter.h>

#include <kdebug.h>
#include <klocale.h>

#include <kpcolor.h>
#include <kpcommandhistory.h>
#include <kpdefs.h>
#include <kpdocument.h>
#include <kpmainwindow.h>
#include <kppixmapfx.h>
#include <kptemppixmap.h>
#include <kptoolrectangle.h>
#include <kptooltoolbar.h>
#include <kptoolwidgetfillstyle.h>
#include <kptoolwidgetlinewidth.h>
#include <kpview.h>
#include <kpviewmanager.h>

static TQPixmap pixmap (const kpToolRectangle::Mode mode,
                       kpDocument *document, const TQRect &rect,
                       const TQPoint &startPoint, const TQPoint &endPoint,
                       const TQPen &pen, const TQPen &maskPen,
                       const TQBrush &brush, const TQBrush &maskBrush)
{
    TQPixmap pixmap = document->getPixmapAt (rect);
    TQBitmap maskBitmap;

    TQPainter painter, maskPainter;

#if DEBUG_KP_TOOL_RECTANGLE && 1
    kdDebug () << "pixmap: rect=" << rect
               << " startPoint=" << startPoint
               << " endPoint=" << endPoint
               << endl;
    kdDebug () << "\tm: p=" << (maskPen.style () != Qt::NoPen)
               << " b=" << (maskBrush.style () != Qt::NoBrush)
               << " o: p=" << (pen.style () != Qt::NoPen)
               << " b=" << (brush.style () != Qt::NoBrush)
               << endl;
    kdDebug () << "\tmaskPen.color()=" << (int *) maskPen.color ().rgb ()
               << " transparent=" << (int *) Qt::color0.rgb ()/*transparent*/
               << endl;
#endif

    if (pixmap.mask () ||
        (maskPen.style () != Qt::NoPen &&
         maskPen.color () ==  Qt::color0/*transparent*/) ||
        (maskBrush.style () != Qt::NoBrush &&
         maskBrush.color () == Qt::color0/*transparent*/))
    {
        maskBitmap = kpPixmapFX::getNonNullMask (pixmap);
        maskPainter.begin (&maskBitmap);
        maskPainter.setPen (maskPen);
        maskPainter.setBrush (maskBrush);
    }

    if (pen.style () != Qt::NoPen ||
        brush.style () != Qt::NoBrush)
    {
        painter.begin (&pixmap);
        painter.setPen (pen);
        painter.setBrush (brush);
    }

#define PAINTER_CALL(cmd)         \
{                                 \
    if (painter.isActive ())      \
        painter . cmd ;           \
                                  \
    if (maskPainter.isActive ())  \
        maskPainter . cmd ;       \
}

    if (startPoint != endPoint)
    {
    #if DEBUG_KP_TOOL_RECTANGLE && 1
        kdDebug () << "\tdraw shape" << endl;
    #endif

        // TODO: Rectangle of pen width 1, height 1 and width X is rendered
        //       as width X - 1.
        switch (mode)
        {
        case kpToolRectangle::Rectangle:
            PAINTER_CALL (drawRect (TQRect (startPoint - rect.topLeft (), endPoint - rect.topLeft ())));
            break;
        case kpToolRectangle::RoundedRectangle:
            PAINTER_CALL (drawRoundRect (TQRect (startPoint - rect.topLeft (), endPoint - rect.topLeft ())));
            break;
        case kpToolRectangle::Ellipse:
            PAINTER_CALL (drawEllipse (TQRect (startPoint - rect.topLeft (), endPoint - rect.topLeft ())));
            break;
        default:
            kdError () << "kptoolrectangle.cpp::pixmap() passed unknown mode: " << int (mode) << endl;
            break;
        }
    }
    else
    {
    #if DEBUG_KP_TOOL_RECTANGLE && 1
        kdDebug () << "\tstartPoint == endPoint" << endl;
    #endif
        // SYNC: Work around Qt bug: can't draw 1x1 rectangle
        // Not strictly correct for border width > 1
        // but better than not drawing at all
        PAINTER_CALL (drawPoint (startPoint - rect.topLeft ()));
    }
#undef PAINTER_CALL

    if (painter.isActive ())
        painter.end ();

    if (maskPainter.isActive ())
        maskPainter.end ();

    if (!maskBitmap.isNull ())
        pixmap.setMask (maskBitmap);

    return pixmap;
}


/*
 * kpToolRectangle
 */

kpToolRectangle::kpToolRectangle (Mode mode,
                                  const TQString &text,
                                  const TQString &description,
                                  int key,
                                  kpMainWindow *mainWindow,
                                  const char *name)
    : kpTool (text, description, key, mainWindow, name),
      m_mode (mode),
      m_toolWidgetLineWidth (0),
      m_toolWidgetFillStyle (0)
{
}

kpToolRectangle::kpToolRectangle (kpMainWindow *mainWindow)
    : kpTool (i18n ("Rectangle"), i18n ("Draws rectangles and squares"),
              Qt::Key_R,
              mainWindow, "tool_rectangle"),
      m_mode (Rectangle),
      m_toolWidgetLineWidth (0),
      m_toolWidgetFillStyle (0)
{
}

kpToolRectangle::~kpToolRectangle ()
{
}

void kpToolRectangle::setMode (Mode mode)
{
    m_mode = mode;
}


// private
void kpToolRectangle::updatePens ()
{
    for (int i = 0; i < 2; i++)
        updatePen (i);
}

// private
void kpToolRectangle::updateBrushes ()
{
    for (int i = 0; i < 2; i++)
        updateBrush (i);
}

// virtual private slot
void kpToolRectangle::slotForegroundColorChanged (const kpColor &)
{
#if DEBUG_KP_TOOL_RECTANGLE
    kdDebug () << "kpToolRectangle::slotForegroundColorChanged()" << endl;
#endif
    updatePen (0);
    updateBrush (0);  // brush may be in foreground color
    updateBrush (1);
}

// virtual private slot
void kpToolRectangle::slotBackgroundColorChanged (const kpColor &)
{
#if DEBUG_KP_TOOL_RECTANGLE
    kdDebug () << "kpToolRectangle::slotBackgroundColorChanged()" << endl;
    kdDebug () << "\tm_toolWidgetFillStyle=" << m_toolWidgetFillStyle << endl;
#endif
    updatePen (1);
    updateBrush (0);
    updateBrush (1);  // brush may be in background color
}

// private
void kpToolRectangle::updatePen (int mouseButton)
{
    TQColor maskPenColor = color (mouseButton).maskColor ();

    if (!m_toolWidgetLineWidth)
    {
        if (color (mouseButton).isOpaque ())
            m_pen [mouseButton] = TQPen (color (mouseButton).toQColor ());
        else
            m_pen [mouseButton] = Qt::NoPen;
        m_maskPen [mouseButton] = TQPen (maskPenColor);
    }
    else
    {
        if (color (mouseButton).isOpaque ())
        {
            m_pen [mouseButton] = TQPen (color (mouseButton).toQColor (),
                                        m_toolWidgetLineWidth->lineWidth (),
                                        Qt::SolidLine);
        }
        else
            m_pen [mouseButton] = Qt::NoPen;
        m_maskPen [mouseButton] = TQPen (maskPenColor,
                                        m_toolWidgetLineWidth->lineWidth (),
                                        Qt::SolidLine);
    }
}

void kpToolRectangle::updateBrush (int mouseButton)
{
#if DEBUG_KP_TOOL_RECTANGLE
    kdDebug () << "kpToolRectangle::brush ()  mouseButton=" << mouseButton
               << " m_toolWidgetFillStyle=" << m_toolWidgetFillStyle
               << endl;
#endif
    if (m_toolWidgetFillStyle)
    {
        m_brush [mouseButton] = m_toolWidgetFillStyle->brush (
            color (mouseButton)/*foreground colour*/,
            color (1 - mouseButton)/*background colour*/);

        m_maskBrush [mouseButton] = m_toolWidgetFillStyle->maskBrush (
            color (mouseButton)/*foreground colour*/,
            color (1 - mouseButton)/*background colour*/);
    }
    else
    {
        m_brush [mouseButton] = Qt::NoBrush;
        m_maskBrush [mouseButton] = Qt::NoBrush;
    }
}


// private slot virtual
void kpToolRectangle::slotLineWidthChanged ()
{
    updatePens ();

    if (hasBegunDraw ())
        updateShape ();
}

// private slot virtual
void kpToolRectangle::slotFillStyleChanged ()
{
    updateBrushes ();

    if (hasBegunDraw ())
        updateShape ();
}


// private
TQString kpToolRectangle::haventBegunDrawUserMessage () const
{
    return i18n ("Drag to draw.");
}

// virtual
void kpToolRectangle::begin ()
{
#if DEBUG_KP_TOOL_RECTANGLE
    kdDebug () << "kpToolRectangle::begin ()" << endl;
#endif

    kpToolToolBar *tb = toolToolBar ();

#if DEBUG_KP_TOOL_RECTANGLE
    kdDebug () << "\ttoolToolBar=" << tb << endl;
#endif

    if (tb)
    {
        m_toolWidgetLineWidth = tb->toolWidgetLineWidth ();
        connect (m_toolWidgetLineWidth, TQT_SIGNAL (lineWidthChanged (int)),
                 this, TQT_SLOT (slotLineWidthChanged ()));
        m_toolWidgetLineWidth->show ();

        updatePens ();


        m_toolWidgetFillStyle = tb->toolWidgetFillStyle ();
        connect (m_toolWidgetFillStyle, TQT_SIGNAL (fillStyleChanged (kpToolWidgetFillStyle::FillStyle)),
                 this, TQT_SLOT (slotFillStyleChanged ()));
        m_toolWidgetFillStyle->show ();

        updateBrushes ();
    }

#if DEBUG_KP_TOOL_RECTANGLE
    kdDebug () << "\t\tm_toolWidgetFillStyle=" << m_toolWidgetFillStyle << endl;
#endif

    viewManager ()->setCursor (TQCursor (CrossCursor));

    setUserMessage (haventBegunDrawUserMessage ());
}

// virtual
void kpToolRectangle::end ()
{
#if DEBUG_KP_TOOL_RECTANGLE
    kdDebug () << "kpToolRectangle::end ()" << endl;
#endif

    if (m_toolWidgetLineWidth)
    {
        disconnect (m_toolWidgetLineWidth, TQT_SIGNAL (lineWidthChanged (int)),
                    this, TQT_SLOT (slotLineWidthChanged ()));
        m_toolWidgetLineWidth = 0;
    }

    if (m_toolWidgetFillStyle)
    {
        disconnect (m_toolWidgetFillStyle, TQT_SIGNAL (fillStyleChanged (kpToolWidgetFillStyle::FillStyle)),
                   this, TQT_SLOT (slotFillStyleChanged ()));
        m_toolWidgetFillStyle = 0;
    }

    viewManager ()->unsetCursor ();
}

void kpToolRectangle::applyModifiers ()
{
    TQRect rect = TQRect (m_startPoint, m_currentPoint).normalize ();

#if DEBUG_KP_TOOL_RECTANGLE
    kdDebug () << "kpToolRectangle::applyModifiers(" << rect
               << ") shift=" << m_shiftPressed
               << " ctrl=" << m_controlPressed
               << endl;
#endif

    // user wants to m_startPoint == centre
    if (m_controlPressed)
    {
        int xdiff = kAbs (m_startPoint.x () - m_currentPoint.x ());
        int ydiff = kAbs (m_startPoint.y () - m_currentPoint.y ());
        rect = TQRect (m_startPoint.x () - xdiff, m_startPoint.y () - ydiff,
                      xdiff * 2 + 1, ydiff * 2 + 1);
    }

    // user wants major axis == minor axis:
    //   rectangle --> square
    //   rounded rectangle --> rounded square
    //   ellipse --> circle
    if (m_shiftPressed)
    {
        if (!m_controlPressed)
        {
            if (rect.width () < rect.height ())
            {
                if (m_startPoint.y () == rect.y ())
                    rect.setHeight (rect.width ());
                else
                    rect.setY (rect.bottom () - rect.width () + 1);
            }
            else
            {
                if (m_startPoint.x () == rect.x ())
                    rect.setWidth (rect.height ());
                else
                    rect.setX (rect.right () - rect.height () + 1);
            }
        }
        // have to maintain the centre
        else
        {
            if (rect.width () < rect.height ())
            {
                TQPoint center = rect.center ();
                rect.setHeight (rect.width ());
                rect.moveCenter (center);
            }
            else
            {
                TQPoint center = rect.center ();
                rect.setWidth (rect.height ());
                rect.moveCenter (center);
            }
        }
    }

    m_toolRectangleStartPoint = rect.topLeft ();
    m_toolRectangleEndPoint = rect.bottomRight ();

    m_toolRectangleRectWithoutLineWidth = rect;
    m_toolRectangleRect = kpTool::neededRect (rect, QMAX (m_pen [m_mouseButton].width (),
                                                          m_maskPen [m_mouseButton].width ()));
}

void kpToolRectangle::beginDraw ()
{
    setUserMessage (cancelUserMessage ());
}

void kpToolRectangle::updateShape ()
{
    viewManager ()->setFastUpdates ();

    TQPixmap newPixmap = pixmap (m_mode, document (), m_toolRectangleRect,
                                m_toolRectangleStartPoint, m_toolRectangleEndPoint,
                                m_pen [m_mouseButton], m_maskPen [m_mouseButton],
                                m_brush [m_mouseButton], m_maskBrush [m_mouseButton]);
    kpTempPixmap newTempPixmap (false/*always display*/,
                                kpTempPixmap::SetPixmap/*render mode*/,
                                m_toolRectangleRect.topLeft (),
                                newPixmap);
    viewManager ()->setTempPixmap (newTempPixmap);

    viewManager ()->restoreFastUpdates ();
}

void kpToolRectangle::draw (const TQPoint &, const TQPoint &, const TQRect &)
{
    applyModifiers ();


    updateShape ();


    // Recover the start and end points from the transformed & normalized m_toolRectangleRect

    // S. or S or SC or S == C
    // .C    C
    if (m_currentPoint.x () >= m_startPoint.x () &&
        m_currentPoint.y () >= m_startPoint.y ())
    {
        setUserShapePoints (m_toolRectangleRectWithoutLineWidth.topLeft (),
                            m_toolRectangleRectWithoutLineWidth.bottomRight ());
    }
    // .C or C
    // S.    S
    else if (m_currentPoint.x () >= m_startPoint.x () &&
             m_currentPoint.y () < m_startPoint.y ())
    {
        setUserShapePoints (m_toolRectangleRectWithoutLineWidth.bottomLeft (),
                            m_toolRectangleRectWithoutLineWidth.topRight ());
    }
    // .S or CS
    // C.
    else if (m_currentPoint.x () < m_startPoint.x () &&
             m_currentPoint.y () >= m_startPoint.y ())
    {
        setUserShapePoints (m_toolRectangleRectWithoutLineWidth.topRight (),
                            m_toolRectangleRectWithoutLineWidth.bottomLeft ());
    }
    // C.
    // .S
    else
    {
        setUserShapePoints (m_toolRectangleRectWithoutLineWidth.bottomRight (),
                            m_toolRectangleRectWithoutLineWidth.topLeft ());
    }
}

void kpToolRectangle::cancelShape ()
{
#if 0
    endDraw (m_currentPoint, TQRect (m_startPoint, m_currentPoint).normalize ());
    mainWindow ()->commandHistory ()->undo ();
#else
    viewManager ()->invalidateTempPixmap ();
#endif

    setUserMessage (i18n ("Let go of all the mouse buttons."));
}

void kpToolRectangle::releasedAllButtons ()
{
    setUserMessage (haventBegunDrawUserMessage ());
}

void kpToolRectangle::endDraw (const TQPoint &, const TQRect &)
{
    applyModifiers ();

    // TODO: flicker
    viewManager ()->invalidateTempPixmap ();

    mainWindow ()->commandHistory ()->addCommand (
        new kpToolRectangleCommand
            (m_mode,
             m_pen [m_mouseButton], m_maskPen [m_mouseButton],
             m_brush [m_mouseButton], m_maskBrush [m_mouseButton],
             m_toolRectangleRect, m_toolRectangleStartPoint, m_toolRectangleEndPoint,
             mainWindow ()));

    setUserMessage (haventBegunDrawUserMessage ());
}


/*
 * kpToolRectangleCommand
 */

kpToolRectangleCommand::kpToolRectangleCommand (kpToolRectangle::Mode mode,
                                                const TQPen &pen, const TQPen &maskPen,
                                                const TQBrush &brush, const TQBrush &maskBrush,
                                                const TQRect &rect,
                                                const TQPoint &startPoint, const TQPoint &endPoint,
                                                kpMainWindow *mainWindow)
    : kpCommand (mainWindow),
      m_mode (mode),
      m_pen (pen), m_maskPen (maskPen),
      m_brush (brush), m_maskBrush (maskBrush),
      m_rect (rect),
      m_startPoint (startPoint),
      m_endPoint (endPoint),
      m_oldPixmapPtr (0)
{
}

kpToolRectangleCommand::~kpToolRectangleCommand ()
{
    delete m_oldPixmapPtr;
}


// public virtual [base kpCommand]
TQString kpToolRectangleCommand::name () const
{
    switch (m_mode)
    {
    case kpToolRectangle::Rectangle:
        return i18n ("Rectangle");
    case kpToolRectangle::RoundedRectangle:
        return i18n ("Rounded Rectangle");
    case kpToolRectangle::Ellipse:
        return i18n ("Ellipse");
    default:
        kdError () << "kpToolRectangleCommand::name() passed unknown mode: " << int (m_mode) << endl;
        return TQString::null;
    }
}


// public virtual [base kpCommand]
int kpToolRectangleCommand::size () const
{
    return kpPixmapFX::pixmapSize (m_oldPixmapPtr);
}


// public virtual [base kpCommand]
void kpToolRectangleCommand::execute ()
{
    kpDocument *doc = document ();
    if (!doc)
        return;

    // store Undo info
    if (!m_oldPixmapPtr)
    {
        // OPT: I can do better with no brush
        m_oldPixmapPtr = new TQPixmap ();
        *m_oldPixmapPtr = doc->getPixmapAt (m_rect);
    }
    else
        kdError () << "kpToolRectangleCommand::execute() m_oldPixmapPtr not null" << endl;

    doc->setPixmapAt (pixmap (m_mode, doc,
                              m_rect, m_startPoint, m_endPoint,
                              m_pen, m_maskPen,
                              m_brush, m_maskBrush),
                      m_rect.topLeft ());
}

// public virtual [base kpCommand]
void kpToolRectangleCommand::unexecute ()
{
    kpDocument *doc = document ();
    if (!doc)
        return;

    if (m_oldPixmapPtr)
    {
        doc->setPixmapAt (*m_oldPixmapPtr, m_rect.topLeft ());

        delete m_oldPixmapPtr;
        m_oldPixmapPtr = 0;
    }
    else
        kdError () << "kpToolRectangleCommand::unexecute() m_oldPixmapPtr null" << endl;
}

#include <kptoolrectangle.moc>