forked from mapmapteam/mapmap
/
MapperGLCanvas.cpp
514 lines (454 loc) · 14 KB
/
MapperGLCanvas.cpp
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
/*
* MapperGLCanvas.cpp
*
* (c) 2013 Sofian Audry -- info(@)sofianaudry(.)com
* (c) 2013 Alexandre Quessy -- alexandre(@)quessy(.)net
*
* 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 3 of the License, 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "MapperGLCanvas.h"
#include "MainWindow.h"
#include "Commands.h"
MapperGLCanvas::MapperGLCanvas(MainWindow* mainWindow, QWidget* parent, const QGLWidget * shareWidget, QGraphicsScene* scene)
: QGraphicsView(parent),
_mainWindow(mainWindow),
_mousePressedOnVertex(false),
_activeVertex(NO_VERTEX),
_shapeGrabbed(false), // comment out?
_shapeFirstGrab(false), // comment out?
_zoomLevel(0)
{
// For now clicking on the window doesn't do anything.
setDragMode(QGraphicsView::NoDrag);
setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing |
QPainter::HighQualityAntialiasing | QPainter::SmoothPixmapTransform);
setResizeAnchor(AnchorViewCenter);
setInteractive(true);
//setFrameStyle(Sunken | StyledPanel);
// TODO: check this
// setOptimizationFlags(QGraphicsView::DontSavePainterState);
//setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
resetTransform();
// setAcceptDrops(true);
// Render with OpenGL.
setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers), this, shareWidget));
setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
// TODO: do we need to delete scene (or call new QGraphicsScene(this)?)
setScene(scene ? scene : new QGraphicsScene);
// Black background.
this->scene()->setBackgroundBrush(Qt::black);
}
MShape* MapperGLCanvas::getCurrentShape()
{
return getShapeFromMappingId(MainWindow::instance()->getCurrentMappingId());
}
ShapeGraphicsItem* MapperGLCanvas::getCurrentShapeGraphicsItem()
{
return getShapeGraphicsItemFromMappingId(MainWindow::instance()->getCurrentMappingId());
}
// Draws foreground (displays crosshair if needed).
void MapperGLCanvas::drawForeground(QPainter *painter , const QRectF &rect)
{
Q_UNUSED(rect);
if (_mainWindow->displayControls())
{
uid mid = _mainWindow->getCurrentMappingId();
if (mid != NULL_UID)
{
ShapeGraphicsItem* item = getCurrentShapeGraphicsItem();
if (item)
item->getControlPainter()->paint(painter);
}
}
}
//
void MapperGLCanvas::mousePressEvent(QMouseEvent* event)
{
bool mousePressedOnSomething = false;
_mousePressedPosition = event->pos();
QPointF pos = mapToScene(event->pos());
// Drag the scene with middle button.
if (event->buttons() & Qt::MiddleButton)
{
// NOTE: This is a trick code to implement scroll hand drag using the middle button.
QMouseEvent releaseEvent(QEvent::MouseButtonRelease, event->pos(), event->globalPos(), Qt::LeftButton, 0, event->modifiers());
QGraphicsView::mouseReleaseEvent(&releaseEvent);
setDragMode(QGraphicsView::ScrollHandDrag);
// We need to pretend it is actually the left button that was pressed!
QMouseEvent fakeEvent(event->type(), event->pos(), event->globalPos(),
Qt::LeftButton, event->buttons() | Qt::LeftButton, event->modifiers());
QGraphicsView::mousePressEvent(&fakeEvent);
}
// Check for vertex selection first.
else if (event->buttons() & Qt::LeftButton)
{
MShape* shape = getCurrentShape();
if (shape)
{
// Note: we compare with the square value for fastest computation of the distance
int minDistance = sq(MM::VERTEX_SELECT_RADIUS);
// Find the ID of the nearest vertex (from currently selected shape)
for (int i = 0; i < shape->nVertices(); i++)
{
int dist = distSq(_mousePressedPosition, mapFromScene(shape->getVertex(i))); // squared distance
if (dist < minDistance)
{
_activeVertex = i;
minDistance = dist;
_mousePressedOnVertex = true;
mousePressedOnSomething = true;
_grabbedObjectStartPosition = shape->getVertex(i);
}
}
}
}
if (mousePressedOnSomething)
return;
// Check for shape selection.
if (event->buttons() & (Qt::LeftButton | Qt::RightButton)) // Add Right click for context menu
{
MShape* selectedShape = getCurrentShape();
// Possibility of changing shape in output by clicking on it.
MappingManager manager = getMainWindow()->getMappingManager();
QVector<Mapping::ptr> mappings = manager.getVisibleMappings();
for (QVector<Mapping::ptr>::const_iterator it = mappings.end() - 1; it >= mappings.begin(); --it)
{
MShape *shape = getShapeFromMappingId((*it)->getId());
// Check if mouse was pressed on that shape.
if (shape && shape->includesPoint(pos))
{
mousePressedOnSomething = true;
// Deselect vertices.
deselectVertices();
// Change mapping (only available in destination).
if (isOutput() && shape != selectedShape)
{
// Change current mapping.
getMainWindow()->setCurrentMapping((*it)->getId());
// Reset selected shape to new one.
selectedShape = getCurrentShape();
}
break;
}
}
// Grab the shape.
if (event->buttons() & Qt::LeftButton) // This preserve me from duplicate code above
{
if (selectedShape && selectedShape->includesPoint(pos))
{
_shapeGrabbed = true;
_shapeFirstGrab = true;
_grabbedObjectStartPosition = pos;
}
}
}
if (mousePressedOnSomething)
return;
// Deactivate.
deselectAll();
}
void MapperGLCanvas::mouseReleaseEvent(QMouseEvent* event)
{
Q_UNUSED(event);
// Wrap-up dragging the scene with middle button.
if (event->buttons() & Qt::MiddleButton)
{
QMouseEvent fakeEvent(event->type(), event->pos(), event->globalPos(),
Qt::LeftButton, event->buttons() & ~Qt::LeftButton, event->modifiers());
QGraphicsView::mouseReleaseEvent(&fakeEvent);
setDragMode(QGraphicsView::NoDrag);
setCursor(Qt::ArrowCursor);
}
// // Click on vertex ==> select the vertex.
// if ((event->buttons() & Qt::LeftButton) && _mousePressedOnVertex)
// {
// }
if (_mousePressedOnVertex)
{
}
else if (_shapeGrabbed)
{
}
_mousePressedOnVertex = false;
_shapeGrabbed = false;
}
void MapperGLCanvas::mouseMoveEvent(QMouseEvent* event)
{
static QPoint lastMousePos;
QPointF pos = mapToScene(event->pos());
// Prepare to store commands
undoStack = getMainWindow()->getUndoStack();
// Vertex grab.
if (_mousePressedOnVertex)
{
// std::cout << "Move event " << std::endl;
MShape* shape = getCurrentShape();
if (shape && _activeVertex != NO_VERTEX)
{
// QPointF p = shape->getVertex(_activeVertex);
// // Set point to mouse coordinates.
// p.setX(pos.x());
// p.setY(pos.y());
QPointF p = pos;
// Stick to vertices.
if (_mainWindow->stickyVertices())
_glueVertex(&p);
shape->setVertex(_activeVertex, p);
}
}
// Shape grab.
else if (_shapeGrabbed)
{
// std::cout << "Move event " << std::endl;
MShape* shape = getCurrentShape();
if (shape)
{
if (_shapeFirstGrab)
{
lastMousePos = _mousePressedPosition;
_shapeFirstGrab = false;
}
}
QPointF diff = pos - mapToScene(lastMousePos);
shape->translate(diff.x(), diff.y());
}
// Window translation action
else if (event->buttons() & Qt::MiddleButton)
{
QPointF diff = event->pos() - lastMousePos;
QGraphicsView* view = scene()->views().first();
view->translate(diff.x(), diff.y());
// view->update();
}
lastMousePos = event->pos();
}
//
//void MapperGLCanvas::keyPressEvent(QKeyEvent* event)
//{
// // Prepare to store commands
// undoStack = getMainWindow()->getUndoStack();
//
// // Checks if the key has been handled by this function or needs to be deferred to superclass.
// bool handledKey = false;
//
// // Active vertex selected.
// if (hasActiveVertex())
// {
// Shape* shape = getCurrentShape();
// QPointF p = shape->getVertex(_activeVertex);
// handledKey = true;
// switch (event->key()) {
// // TODO: key tab should switch to next vertex: not working because somehow caught at a higher level
// // to switch between frames of the layout
//// case Qt::Key_Tab:
//// if (shape)
//// _activeVertex = (_activeVertex + 1) % shape->nVertices();
//// p = shape->getVertex(_activeVertex); // reset to new vertex
//// qDebug() << "New active vertex : " << _activeVertex << endl;
//// break;
// // Handle pixel-wise adjustments of vertex.
// case Qt::Key_Up:
// p.ry()--;
// break;
// case Qt::Key_Down:
// p.ry()++;
// break;
// case Qt::Key_Right:
// p.rx()++;
// break;
// case Qt::Key_Left:
// p.rx()--;
// break;
// default:
// if (event->matches(QKeySequence::Undo))
// undoStack->undo();
//
// else if (event->matches(QKeySequence::Redo))
// undoStack->redo();
// else
// handledKey = false;
// break;
// }
// // TODO: this will always be called even if no arrow key has been pressed (small performance issue).
// // Enable to Undo and Redo when arrow keys move the position of vertices
// undoStack->push(new MoveVertexCommand(this, _activeVertex, p));
// }
//
// // Defer unhandled keys to parent.
// if (!handledKey)
// {
// QWidget::keyPressEvent(event);
// }
//
//// std::cout << "Key pressed" << std::endl;
//// int xMove = 0;
//// int yMove = 0;
//// switch (event->key()) {
//// case Qt::Key_Tab:
//// if (event->modifiers() & Qt::ControlModifier)
//// switchImage( (Common::getCurrentSourceId() + 1) % Common::nImages());
//// else
//// {
//// Quad& quad = getQuad();
//// _active_vertex = (_active_vertex + 1 ) % 4;
//// }
//// break;
//// case Qt::Key_Up:
//// yMove = -1;
//// break;
//// case Qt::Key_Down:
//// yMove = +1;
//// break;
//// case Qt::Key_Left:
//// xMove = -1;
//// break;
//// case Qt::Key_Right:
//// xMove = +1;
//// break;
//// default:
//// std::cerr << "Unhandled key" << std::endl;
//// QWidget::keyPressEvent(event);
//// break;
//// }
////
//// Quad& quad = getQuad();
//// Point *p = quad.getVertex(_active_vertex);
//// p->x += xMove;
//// p->y += yMove;
//// quad.setVertex(_active_vertex, p);
////
//// update();
////
//// emit quadChanged();
//}
//
//void MapperGLCanvas::paintEvent(QPaintEvent* )
//{
// makeCurrent();
//
// QPainter painter(this);
// painter.setRenderHint(QPainter::Antialiasing);
//
// draw(&painter);
//
// painter.end();
//}
void MapperGLCanvas::updateCanvas()
{
update();
scene()->update();
}
///* Stick vertex p of Shape orig to another Shape's vertex, if the 2 vertices are
// * close enough. The distance per coordinate is currently set in dist_stick
// * variable. Perhaps the sticky-sensitivity should be configurable through GUI */
//void MapperGLCanvas::glueVertex(MShape *orig, QPointF *p)
//{
// MappingManager manager = getMainWindow()->getMappingManager();
// for (int i = 0; i < manager.nMappings(); i++)
// {
// MShape *shape = getShapeFromMappingId(manager.getMapping(i)->getId());
// if (shape && shape != orig)
// {
// for (int vertex = 0; vertex < shape->nVertices(); vertex++)
// {
// const QPointF& v = shape->getVertex(vertex);
// if (distIsInside(v, *p, MM::VERTEX_STICK_RADIUS))
// {
// p->setX(v.x());
// p->setY(v.y());
// }
// }
// }
// }
//}
void MapperGLCanvas::deselectVertices()
{
_activeVertex = NO_VERTEX;
_mousePressedOnVertex = false;
}
void MapperGLCanvas::deselectAll()
{
deselectVertices();
_shapeGrabbed = false;
_shapeFirstGrab = false;
}
void MapperGLCanvas::wheelEvent(QWheelEvent *event)
{
int deltaLevel = event->delta() / 120;
qreal zoomFactor = qPow(MM::ZOOM_FACTOR, _zoomLevel);
if (deltaLevel > 0)
{
// First check if we're already at max.
while (deltaLevel && zoomFactor < MM::ZOOM_MAX) {
_zoomLevel++;
deltaLevel--;
zoomFactor = qPow(MM::ZOOM_FACTOR, _zoomLevel);
}
zoomFactor = qMin(zoomFactor, MM::ZOOM_MAX);
}
else
{
// First check if we're already at min.
while (deltaLevel && zoomFactor > MM::ZOOM_MIN) {
_zoomLevel--;
deltaLevel++;
zoomFactor = qPow(MM::ZOOM_FACTOR, _zoomLevel);
}
zoomFactor = qMax(zoomFactor, MM::ZOOM_MIN);
}
// Re-bound zoom (for consistency).
zoomFactor = getZoomFactor();
// Apply zoom to view.
QGraphicsView* view = scene()->views().first();
view->resetMatrix();
view->scale(zoomFactor, zoomFactor);
view->update();
// Accept wheel scrolling event.
event->accept();
}
bool MapperGLCanvas::eventFilter(QObject *target, QEvent *event)
{
if (event->type() == QEvent::KeyPress)
{
QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
setActiveVertexIndex(getMainWindow()->getOutputWindow()->getCanvas()->getActiveVertexIndex());
MapperGLCanvas::keyPressEvent(keyEvent);
return true;
}
else
{
return QObject::eventFilter(target, event);
}
}
void MapperGLCanvas::_glueVertex(QPointF* p)
{
MappingManager manager = MainWindow::instance()->getMappingManager();
for (int i = 0; i < manager.nMappings(); i++)
{
MShape *shape = manager.getMapping(i)->getShape().get();
if (shape && shape != getCurrentShape())
{
for (int vertex = 0; vertex < shape->nVertices(); vertex++)
{
const QPointF& v = shape->getVertex(vertex);
if (distIsInside(v, *p, MM::VERTEX_STICK_RADIUS))
{
p->setX(v.x());
p->setY(v.y());
}
}
}
}
}