Krita Source Code Documentation
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kis_painting_assistants_decoration.cpp
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1/*
2 * SPDX-FileCopyrightText: 2009 Cyrille Berger <cberger@cberger.net>
3 * SPDX-FileCopyrightText: 2017 Scott Petrovic <scottpetrovic@gmail.com>
4 *
5 * SPDX-License-Identifier: GPL-2.0-or-later
6 */
7
9
10#include <cstdint>
11#include <limits>
12
13#include <QList>
14#include <QPointF>
15#include <klocalizedstring.h>
16#include <kactioncollection.h>
17#include <ktoggleaction.h>
18#include <kis_algebra_2d.h>
19#include "kis_debug.h"
20#include "KisDocument.h"
21#include "kis_canvas2.h"
23#include "kis_icon_utils.h"
24#include "KisViewManager.h"
26#include "kis_tool_proxy.h"
28
29#include <QPainter>
30#include <QPainterPath>
31#include <QApplication>
32
56
57
58
60 KisCanvasDecoration("paintingAssistantsDecoration", parent),
61 d(new Private)
62{
65 setPriority(95);
66 d->snapOnlyOneAssistant = true; //turn on by default.
67 d->snapEraser = false;
68
69 slotConfigChanged(); // load the initial config
70}
71
76
78{
79 const bool shouldBeVisible = !assistants().isEmpty();
80
81 if (visible() != shouldBeVisible) {
82 setVisible(shouldBeVisible);
83 }
84}
85
95
97{
98 QList<KisPaintingAssistantSP> assistants = view()->document()->assistants();
99 if (assistants.contains(assistant)) return;
100
101 assistants.append(assistant);
102 assistant->setAssistantGlobalColorCache(view()->document()->assistantsGlobalColor());
103
104 view()->document()->setAssistants(assistants);
105 setVisible(!assistants.isEmpty());
106 Q_EMIT assistantChanged();
107}
108
109// bring assistant to front of assistants list, effectively causing assistant to be rendered above the others
111{
112 QList<KisPaintingAssistantSP> assistants = view()->document()->assistants();
113 assistants.removeOne(assistant);
114
115 if (!assistant) return;
116 assistants.append(assistant);
117
118 view()->document()->setAssistants(assistants);
119 setVisible(!assistants.isEmpty());
120 Q_EMIT assistantChanged();
121
122}
123
125{
126 QList<KisPaintingAssistantSP> assistants = view()->document()->assistants();
127 KIS_ASSERT_RECOVER_NOOP(assistants.contains(assistant));
128
129 if (assistants.removeAll(assistant)) {
130 view()->document()->setAssistants(assistants);
131 setVisible(!assistants.isEmpty());
132 Q_EMIT assistantChanged();
133 }
134}
135
137{
138 QList<KisPaintingAssistantSP> assistants = view()->document()->assistants();
139 assistants.clear();
140 view()->document()->setAssistants(assistants);
141 setVisible(!assistants.isEmpty());
142
143 Q_EMIT assistantChanged();
144}
145
147{
148 Q_FOREACH (KisPaintingAssistantSP assistant, assistants) {
149 assistant->setAssistantGlobalColorCache(view()->document()->assistantsGlobalColor());
150 }
151 view()->document()->setAssistants(assistants);
152 setVisible(!assistants.isEmpty());
153
154 Q_EMIT assistantChanged();
155}
156
158{
159 if (!assistants().empty()) {
160 Q_FOREACH (KisPaintingAssistantSP assistant, assistants()) {
161 assistant->setAdjustedBrushPosition(position);
162 }
163 }
164}
165
166
167QPointF KisPaintingAssistantsDecoration::adjustPosition(const QPointF& point, const QPointF& strokeBegin)
168{
169
170 if (assistants().empty()) {
171 // No assistants, so no adjustment
172 return point;
173 }
174
175 if (!d->snapEraser
177 // No snapping if eraser snapping is disabled and brush is an eraser
178 return point;
179 }
180
181 KisImageSP image = d->m_canvas->image();
183
185 const qreal moveThresholdPt = 4.0 / (converter->effectiveZoom() * qMax(image->xRes(), image->yRes()));
186
187 QPointF best = point;
188 qreal minSquareDistance = std::numeric_limits<qreal>::max();
189 qreal secondSquareDistance = std::numeric_limits<qreal>::max();
190
192 // In these cases the best assistant needs to be determined.
193 int numSuitableAssistants = 0;
194 KisPaintingAssistantSP bestAssistant;
195
196 Q_FOREACH (KisPaintingAssistantSP assistant, assistants()) {
197 if (assistant->isSnappingActive() == true){ // the toggle button with eye icon to disable assistants
198 QPointF newpoint = assistant->adjustPosition(point, strokeBegin, true, moveThresholdPt);
199 // Assistants that can't or don't want to snap return NaN values (aside from possible numeric issues)
200 // NOTE: It would be safer to also reject points too far outside canvas (or widget?) area,
201 // because for example squashed concentric ellipses can currently shoot points far off.
202 if (qIsNaN(newpoint.x()) || qIsNaN(newpoint.y())) {
203 continue;
204 }
205 ++numSuitableAssistants;
206 qreal dist = kisSquareDistance(newpoint, point);
207 if (dist < minSquareDistance) {
208 best = newpoint;
209 secondSquareDistance = minSquareDistance;
210 minSquareDistance = dist;
211 bestAssistant = assistant;
212 } else if (dist < secondSquareDistance) {
213 secondSquareDistance = dist;
214 }
215 assistant->setFollowBrushPosition(true);
216 }
217 }
218
219 // When there are multiple choices within moveThresholdPt, delay the decision until movement leaves
220 // threshold to determine which curve follows cursor movement the closest. Assistants with multiple
221 // snapping curves also need this movement to decide the best choice.
222 // NOTE: It is currently not possible to tell painting tools that a decision is pending, or that
223 // the active snapping curve changed, so certain artifact lines from snapping changes are unavoidable.
224
225 if (numSuitableAssistants > 1 && KisAlgebra2D::norm(point - strokeBegin) <= moveThresholdPt
226 && (sqrt(secondSquareDistance) < moveThresholdPt)) {
227 return strokeBegin;
228 } else if (numSuitableAssistants > 0 && d->snapOnlyOneAssistant) {
229 // if only snapping to one assistant, register it
230 d->firstAssistant = bestAssistant;
231 }
232 } else {
233 // Make sure BUG:448187 doesn't crop up again
234 KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(d->firstAssistant->isSnappingActive(), point);
235 // there already is an assistant locked in, check if it can be used
236 QPointF newpoint = d->firstAssistant->adjustPosition(point, strokeBegin, false, moveThresholdPt);
237 // BUGFIX: 402535
238 // assistants might return (NaN,NaN), must always check for that
239 if (!(qIsNaN(newpoint.x()) || qIsNaN(newpoint.y()))) {
240 best = newpoint;
241 }
242 }
243
244 return best;
245}
246
247void KisPaintingAssistantsDecoration::adjustLine(QPointF &point, QPointF &strokeBegin)
248{
249 if (assistants().empty()) {
250 // No assistants, so no adjustment
251 return;
252 }
253
254 // TODO: figure it out
255 if (!d->snapEraser
257 // No snapping if eraser snapping is disabled and brush is an eraser
258 return;
259 }
260
261 QPointF originalPoint = point;
262 QPointF originalStrokeBegin = strokeBegin;
263
264 qreal minDistance = 10000.0;
265 bool minDistValid = false;
266 QPointF finalPoint = originalPoint;
267 QPointF finalStrokeBegin = originalStrokeBegin;
268 KisPaintingAssistantSP bestAssistant;
269 Q_FOREACH (KisPaintingAssistantSP assistant, assistants()) {
270 if(assistant->isSnappingActive() == true){//this checks if the assistant in question has it's snapping boolean turned on//
271 //QPointF pt = assistant->adjustPosition(point, strokeBegin, true);
272 QPointF p1 = originalPoint;
273 QPointF p2 = originalStrokeBegin;
274 assistant->adjustLine(p1, p2);
275 if (p1.isNull() || p2.isNull()) {
276 // possibly lines cannot snap to this assistant, or this line cannot, at least
277 continue;
278 }
279 qreal distance = kisSquareDistance(p1, originalPoint) + kisSquareDistance(p2, originalStrokeBegin);
280 if (distance < minDistance || !minDistValid) {
281 finalPoint = p1;
282 finalStrokeBegin = p2;
283 minDistValid = true;
284 bestAssistant = assistant;
285 }
286 }
287 }
288 if (bestAssistant) {
289 bestAssistant->setFollowBrushPosition(true);
290 }
291 point = finalPoint;
292 strokeBegin = finalStrokeBegin;
293}
294
296{
297 d->firstAssistant.clear();
298
299 Q_FOREACH (KisPaintingAssistantSP assistant, assistants()) {
300 assistant->endStroke();
301 }
302}
303
304void KisPaintingAssistantsDecoration::drawDecoration(QPainter& gc, const QRectF& updateRect, const KisCoordinatesConverter *converter, KisCanvas2* canvas)
305{
306 if(assistants().isEmpty()) {
307 return; // no assistants to worry about, ok to exit
308 }
309
310 if (!canvas) {
311 dbgFile<<"canvas does not exist in painting assistant decoration, you may have passed arguments incorrectly:"<<canvas;
312 } else {
313 d->m_canvas = canvas;
314 }
315
316 // the preview functionality for assistants. do not show while editing
317
318 KoToolProxy *proxy = view()->canvasBase()->toolProxy();
320 KisToolProxy *kritaProxy = dynamic_cast<KisToolProxy*>(proxy);
322
323 const bool outlineVisible =
326 kritaProxy->supportsPaintingAssistants();
327
328 Q_FOREACH (KisPaintingAssistantSP assistant, assistants()) {
329 assistant->drawAssistant(gc, updateRect, converter, canvas->displayRendererInterface(), d->useCache, canvas, assistantVisibility(), outlineVisible);
330
331 if (isEditingAssistants()) {
332 drawHandles(assistant, gc, converter, canvas->displayRendererInterface());
333 }
334 }
335
336 // draw editor controls on top of all assistant lines (why this code is last)
337 if (isEditingAssistants()) {
338 Q_FOREACH (KisPaintingAssistantSP assistant, assistants()) {
339 drawEditorWidget(assistant, gc, converter, canvas->displayRendererInterface());
340 }
341 }
342}
343
345{
346 QTransform initialTransform = converter->documentToWidgetTransform();
347
348 KoColor c;
349 c.fromQColor(assistant->effectiveAssistantColor());
350 QColor colorToPaint = renderInterface->convertColorToDisplayColorSpace(c);
351
352 Q_FOREACH (const KisPaintingAssistantHandleSP handle, assistant->handles()) {
353
354
355 QPointF transformedHandle = initialTransform.map(*handle);
356 QRectF ellipse(transformedHandle - QPointF(handleSize() * 0.5, handleSize() * 0.5), QSizeF(handleSize(), handleSize()));
357
358 QPainterPath path;
359 path.addEllipse(ellipse);
360
361 gc.save();
362 gc.setPen(Qt::NoPen);
363 gc.setBrush(colorToPaint);
364 gc.drawPath(path);
365 gc.restore();
366 }
367
368 // some assistants have side handles like the vanishing point assistant
369 Q_FOREACH (const KisPaintingAssistantHandleSP handle, assistant->sideHandles()) {
370 QPointF transformedHandle = initialTransform.map(*handle);
371 QRectF ellipse(transformedHandle - QPointF(handleSize() * 0.5, handleSize() * 0.5), QSizeF(handleSize(), handleSize()));
372
373 QPainterPath path;
374 path.addEllipse(ellipse);
375
376 gc.save();
377 gc.setPen(Qt::NoPen);
378 gc.setBrush(colorToPaint);
379 gc.drawPath(path);
380 gc.restore();
381 }
382}
383
388
393
395{
397 Q_FOREACH (KisPaintingAssistantSP assistant, assistants()) {
398 Q_FOREACH (const KisPaintingAssistantHandleSP handle, assistant->handles()) {
399 if (!hs.contains(handle)) {
400 hs.push_back(handle);
401 }
402 }
403 Q_FOREACH (const KisPaintingAssistantHandleSP handle, assistant->sideHandles()) {
404 if (!hs.contains(handle)) {
405 hs.push_back(handle);
406 }
407 }
408 }
409 return hs;
410}
411
413{
415 if (view()) {
416 if (view()->document()) {
417 assistants = view()->document()->assistants();
418 }
419 }
420 return assistants;
421}
422
424{
425 return !assistants().isEmpty();
426}
427
432
438
443
444
449
454
459
461{
462 d->snapEraser = assistant;
463}
464
474{
475 Q_FOREACH (KisPaintingAssistantSP assistant, assistants()) {
476 assistant->uncache();
477 }
478}
484
486{
487 // "outline" means assistant preview (line that depends on the mouse cursor)
489}
490
492{
493 return view()->document()->assistantsGlobalColor();
494}
495
497{
498 // view()->document() is referenced multiple times in this class
499 // it is used to later store things in the KRA file when saving.
500 view()->document()->setAssistantsGlobalColor(color);
501
502 Q_FOREACH (KisPaintingAssistantSP assistant, assistants()) {
503 assistant->setAssistantGlobalColorCache(color);
504 }
505
506 uncache();
507}
508
510{
511 setVisible(true); // this turns on the decorations in general. we leave it on at this point
512 d->m_isEditingAssistants = true;
513 uncache(); // updates visuals when editing
514}
515
517{
518 if (!d->m_canvas) {
519 return;
520 }
521
522 d->m_isEditingAssistants = false; // some elements are hidden when we aren't editing
523 uncache(); // updates visuals when not editing
524}
525
530
531QPointF KisPaintingAssistantsDecoration::snapToGuide(KoPointerEvent *e, const QPointF &offset, bool useModifiers)
532{
533 if (!d->m_canvas || !d->m_canvas->currentImage()) {
534 return e->point;
535 }
536
537
538 KoSnapGuide *snapGuide = d->m_canvas->snapGuide();
539 QPointF pos = snapGuide->snap(e->point, offset, useModifiers ? e->modifiers() : Qt::NoModifier);
540
541 return pos;
542}
543
544QPointF KisPaintingAssistantsDecoration::snapToGuide(const QPointF& pt, const QPointF &offset)
545{
546 if (!d->m_canvas) {
547 return pt;
548 }
549
550
551 KoSnapGuide *snapGuide = d->m_canvas->snapGuide();
552 QPointF pos = snapGuide->snap(pt, offset, Qt::NoModifier);
553
554 return pos;
555}
556
557/*
558 * functions only used internally in this class
559 * we potentially could make some of these inline to speed up performance
560*/
561
562void drawSingleState(QPainter& gc, const QImage &icon, QRect maxRect, const QPoint &position, const KoColorDisplayRendererInterface *renderInterface, QPoint additional = QPoint()) {
563 maxRect.moveTopLeft(position+additional);
564 const QMargins m(2, 2, 2, 2);
565 QRect target(QPoint(), (icon.size()/icon.devicePixelRatioF()));
566 target.moveCenter(maxRect.center());
567 target = target.marginsRemoved(m);
568 gc.drawImage(target.intersected(maxRect), renderInterface->convertImageToDisplayColorSpace(icon));
569}
570
571void drawDoubleState(QPainter& gc, const QImage &icon, const QImage &icon2, QRect maxRect, const QPoint &position, const bool state, const KoColorDisplayRendererInterface *renderInterface) {
572 maxRect.moveTopLeft(position);
573 const QMargins m(2, 2, 2, 2);
574 QRect target(QPoint(), (icon.size()/icon.devicePixelRatioF()));
575 target.moveCenter(maxRect.center());
576 target = target.marginsRemoved(m);
577 if (state) {
578 gc.drawImage(target.intersected(maxRect), renderInterface->convertImageToDisplayColorSpace(icon));
579 } else {
580 gc.save();
581 gc.setOpacity(0.35);
582 gc.drawImage(target.intersected(maxRect.marginsRemoved(m)), renderInterface->convertImageToDisplayColorSpace(icon2));
583 gc.restore();
584 }
585}
586
588{
589 if (!assistant->isAssistantComplete() || !globalEditorWidgetData.widgetActivated) {
590 return;
591 }
592
593 QTransform initialTransform = converter->documentToWidgetTransform();
594 QPointF actionsPosition = initialTransform.map(assistant->viewportConstrainedEditorPosition(converter, globalEditorWidgetData.boundingSize));
595
596 //draw editor widget background
597 QPalette sysPalette = renderInterface->systemPaletteForDisplayColorSpace();
598
599 QBrush backgroundColor = sysPalette.window();
600 QPointF actionsBGRectangle(actionsPosition + QPointF(globalEditorWidgetData.widgetOffset,globalEditorWidgetData.widgetOffset));
601 QPen stroke(sysPalette.window(), 2);
602
603
604 gc.setRenderHint(QPainter::Antialiasing);
605
606
607 QPainterPath bgPath;
608 bgPath.addRoundedRect(QRectF(actionsBGRectangle.x(), actionsBGRectangle.y(), globalEditorWidgetData.boundingSize.width(), globalEditorWidgetData.boundingSize.height()), 6, 6);
609
610
611 // if the assistant is selected, make outline stroke fatter and use theme's highlight color
612 // for better visual feedback
613 if (selectedAssistant()) { // there might not be a selected assistant, so do not seg fault
614 if (assistant->getEditorPosition() == selectedAssistant()->getEditorPosition()) {
615 stroke.setWidth(6);
616 stroke.setColor(sysPalette.color(QPalette::Highlight));
617
618 }
619 }
620
621 gc.setPen(stroke);
622 gc.drawPath(bgPath);
623 gc.fillPath(bgPath, backgroundColor);
624
625 //draw drag handle
626 KoColor c;
627 c.fromQColor(QColor(150,150,150,255));
628 QColor dragDecorationColor = renderInterface->convertColorToDisplayColorSpace(c);
629
630 QPainterPath dragRect;
633
634 gc.fillPath(bgPath.intersected(dragRect),dragDecorationColor);
635
636 //draw dot decoration on handle
637 QPainterPath dragRectDots;
638 c.fromQColor(QColor(50,50,50,255));
639 QColor dragDecorationDotsColor = renderInterface->convertColorToDisplayColorSpace(c);
640 int dotSize = 2;
641 dragRectDots.addEllipse(3,2.5,dotSize,dotSize);
642 dragRectDots.addEllipse(3,7.5,dotSize,dotSize);
643 dragRectDots.addEllipse(3,-2.5,dotSize,dotSize);
644 dragRectDots.addEllipse(3,-7.5,dotSize,dotSize);
645 dragRectDots.addEllipse(-3,2.5,dotSize,dotSize);
646 dragRectDots.addEllipse(-3,7.5,dotSize,dotSize);
647 dragRectDots.addEllipse(-3,-2.5,dotSize,dotSize);
648 dragRectDots.addEllipse(-3,-7.5,dotSize,dotSize);
649 dragRectDots.translate((globalEditorWidgetData.dragDecorationWidth/2)+width,(globalEditorWidgetData.boundingSize.height()/2)+actionsPosition.y()+globalEditorWidgetData.widgetOffset);
650 gc.fillPath(dragRectDots,dragDecorationDotsColor);
651
652 QRect buttonRect(QPoint(0,0), QSize(globalEditorWidgetData.buttonSize, globalEditorWidgetData.buttonSize));
653 //loop over all visible buttons and render them
655 QPoint pos = QPointF(actionsPosition + globalEditorWidgetData.moveIconPosition).toPoint();
656 drawSingleState(gc, globalEditorWidgetData.m_iconMove, buttonRect, pos, renderInterface, QPoint(5, 5));
657 }
659 QPoint pos = QPointF(actionsPosition + globalEditorWidgetData.snapIconPosition).toPoint();
660 drawDoubleState(gc, globalEditorWidgetData.m_iconSnapOn, globalEditorWidgetData.m_iconSnapOff, buttonRect, pos, assistant->isSnappingActive(), renderInterface);
661 }
663 QPoint pos = QPointF(actionsPosition + globalEditorWidgetData.lockedIconPosition).toPoint();
664 drawDoubleState(gc, globalEditorWidgetData.m_iconLockOn, globalEditorWidgetData.m_iconLockOff, buttonRect, pos, assistant->isLocked(), renderInterface);
665 }
667 QPoint pos = QPointF(actionsPosition + globalEditorWidgetData.duplicateIconPosition).toPoint();
668 drawDoubleState(gc, globalEditorWidgetData.m_iconDuplicate, globalEditorWidgetData.m_iconDuplicate, buttonRect, pos, !assistant->isDuplicating(), renderInterface);
669 }
671 QPoint pos = QPointF(actionsPosition + globalEditorWidgetData.deleteIconPosition).toPoint();
672 drawSingleState(gc, globalEditorWidgetData.m_iconDelete, buttonRect, pos, renderInterface);
673 }
674}
QPointF p2
QPointF p1
KisMagneticGraph::vertex_descriptor target(typename KisMagneticGraph::edge_descriptor e, KisMagneticGraph g)
const QString COMPOSITE_ERASE
qreal distance(const QPointF &p1, const QPointF &p2)
KoColorDisplayRendererInterface * displayRendererInterface() const override
displayRendererInterface The display renderer interface has a number of color conversion functions wh...
KisImageWSP currentImage() const
KisCoordinatesConverter * coordinatesConverter
KisImageWSP image() const
QPointer< KisView > view() const
virtual void setVisible(bool v)
@ ASSISTANTS_DRAW_MODE_PIXMAP_CACHE
Definition kis_config.h:806
@ ASSISTANTS_DRAW_MODE_LARGE_PIXMAP_CACHE
Definition kis_config.h:807
AssistantsDrawMode assistantsDrawMode(bool defaultValue=false) const
double xRes() const
double yRes() const
void drawHandles(KisPaintingAssistantSP assistant, QPainter &gc, const KisCoordinatesConverter *converter, const KoColorDisplayRendererInterface *renderInterface)
QList< KisPaintingAssistantSP > assistants() const
void addAssistant(KisPaintingAssistantSP assistant)
QPointF snapToGuide(KoPointerEvent *e, const QPointF &offset, bool useModifiers)
void drawEditorWidget(KisPaintingAssistantSP assistant, QPainter &gc, const KisCoordinatesConverter *converter, const KoColorDisplayRendererInterface *renderInterface)
void setAssistantVisible(bool set)
sets whether the main assistant is visible
void toggleOutlineVisible()
toggles whether there will be a preview of the assistant result when painting
void setSelectedAssistant(KisPaintingAssistantSP assistant)
void toggleAssistantVisible()
toggles whether the assistant is active or not
void setOnlyOneAssistantSnap(bool assistant)
sets whether we snap to only one assistant
KisPaintingAssistantsDecoration(QPointer< KisView > parent)
void removeAssistant(KisPaintingAssistantSP assistant)
void raiseAssistant(KisPaintingAssistantSP assistant)
bool assistantVisibility()
returns assistant visibility
void setAssistants(const QList< KisPaintingAssistantSP > &assistants)
void drawDecoration(QPainter &gc, const QRectF &updateRect, const KisCoordinatesConverter *converter, KisCanvas2 *canvas) override
void setEraserSnap(bool assistant)
sets whether eraser brushes snap
void adjustLine(QPointF &point, QPointF &strokeBegin)
void setOutlineVisible(bool set)
sets whether the preview is visible
QList< KisPaintingAssistantHandleSP > handles()
QPointF adjustPosition(const QPointF &point, const QPointF &strokeBegin)
bool supportsPaintingAssistants() const
KoSnapGuide * snapGuide
QPointer< KoCanvasResourceProvider > resourceManager
virtual QColor convertColorToDisplayColorSpace(const KoColor color) const =0
convertColorToDisplayColorSpace
virtual QImage convertImageToDisplayColorSpace(const QImage source) const =0
convertImageToDisplayColorSpace
virtual QPalette systemPaletteForDisplayColorSpace() const =0
systemPaletteForDisplayColorSpace
void fromQColor(const QColor &c)
Convenient function for converting from a QColor.
Definition KoColor.cpp:213
Qt::KeyboardModifiers modifiers() const
QPointF point
The point in document coordinates.
QPointF snap(const QPointF &mousePosition, Qt::KeyboardModifiers modifiers)
snaps the mouse position, returns if mouse was snapped
#define KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(cond, val)
Definition kis_assert.h:129
#define KIS_SAFE_ASSERT_RECOVER_RETURN(cond)
Definition kis_assert.h:128
#define KIS_ASSERT_RECOVER_NOOP(cond)
Definition kis_assert.h:97
#define dbgFile
Definition kis_debug.h:53
qreal kisSquareDistance(const QPointF &pt1, const QPointF &pt2)
Definition kis_global.h:194
void drawSingleState(QPainter &gc, const QImage &icon, QRect maxRect, const QPoint &position, const KoColorDisplayRendererInterface *renderInterface, QPoint additional=QPoint())
void drawDoubleState(QPainter &gc, const QImage &icon, const QImage &icon2, QRect maxRect, const QPoint &position, const bool state, const KoColorDisplayRendererInterface *renderInterface)
qreal norm(const T &a)