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-rw-r--r--examples/widgets/painting/shared/hoverpoints.cpp436
1 files changed, 178 insertions, 258 deletions
diff --git a/examples/widgets/painting/shared/hoverpoints.cpp b/examples/widgets/painting/shared/hoverpoints.cpp
index 417d593d04..a917139613 100644
--- a/examples/widgets/painting/shared/hoverpoints.cpp
+++ b/examples/widgets/painting/shared/hoverpoints.cpp
@@ -1,87 +1,23 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the demonstration applications of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * 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.
-** * Neither the name of The Qt Company Ltd nor the names of its
-** contributors may be used to endorse or promote products derived
-** from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "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 COPYRIGHT
-** OWNER OR CONTRIBUTORS 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."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "arthurwidgets.h"
#include "hoverpoints.h"
#include <algorithm>
-#if QT_CONFIG(opengl)
-#include <QtOpenGL/QOpenGLWindow>
-#endif
-
-#define printf
-
HoverPoints::HoverPoints(QWidget *widget, PointShape shape)
- : QObject(widget)
+ : QObject(widget),
+ m_widget(widget),
+ m_shape(shape)
{
- m_widget = widget;
widget->installEventFilter(this);
widget->setAttribute(Qt::WA_AcceptTouchEvents);
- m_connectionType = CurveConnection;
- m_sortType = NoSort;
- m_shape = shape;
- m_pointPen = QPen(QColor(255, 255, 255, 191), 1);
- m_connectionPen = QPen(QColor(255, 255, 255, 127), 2);
- m_pointBrush = QBrush(QColor(191, 191, 191, 127));
- m_pointSize = QSize(11, 11);
- m_currentIndex = -1;
- m_editable = true;
- m_enabled = true;
-
connect(this, &HoverPoints::pointsChanged,
m_widget, QOverload<>::of(&QWidget::update));
}
-
void HoverPoints::setEnabled(bool enabled)
{
if (m_enabled != enabled) {
@@ -90,191 +26,200 @@ void HoverPoints::setEnabled(bool enabled)
}
}
-
bool HoverPoints::eventFilter(QObject *object, QEvent *event)
{
- if (object == m_widget && m_enabled) {
- switch (event->type()) {
+ if (object != m_widget || !m_enabled)
+ return false;
- case QEvent::MouseButtonPress:
- {
- if (!m_fingerPointMapping.isEmpty())
- return true;
- QMouseEvent *me = (QMouseEvent *) event;
-
- QPointF clickPos = me->position().toPoint();
- int index = -1;
- for (int i=0; i<m_points.size(); ++i) {
- QPainterPath path;
- if (m_shape == CircleShape)
- path.addEllipse(pointBoundingRect(i));
- else
- path.addRect(pointBoundingRect(i));
-
- if (path.contains(clickPos)) {
- index = i;
- break;
- }
+ switch (event->type()) {
+ case QEvent::MouseButtonPress:
+ {
+ if (!m_fingerPointMapping.isEmpty())
+ return true;
+ auto *me = static_cast<const QMouseEvent *>(event);
+ QPointF clickPos = me->position().toPoint();
+ qsizetype index = -1;
+ for (qsizetype i = 0; i < m_points.size(); ++i) {
+ QPainterPath path;
+ const QRectF rect = pointBoundingRect(m_points.at(i));
+ if (m_shape == CircleShape)
+ path.addEllipse(rect);
+ else
+ path.addRect(rect);
+
+ if (path.contains(clickPos)) {
+ index = i;
+ break;
}
+ }
- if (me->button() == Qt::LeftButton) {
- if (index == -1) {
- if (!m_editable)
- return false;
- int pos = 0;
- // Insert sort for x or y
- if (m_sortType == XSort) {
- for (int i=0; i<m_points.size(); ++i)
- if (m_points.at(i).x() > clickPos.x()) {
- pos = i;
- break;
- }
- } else if (m_sortType == YSort) {
- for (int i=0; i<m_points.size(); ++i)
- if (m_points.at(i).y() > clickPos.y()) {
- pos = i;
- break;
- }
+ if (me->button() == Qt::LeftButton) {
+ if (index == -1) {
+ if (!m_editable)
+ return false;
+ qsizetype pos = 0;
+ // Insert sort for x or y
+ switch (m_sortType) {
+ case XSort:
+ for (qsizetype i = 0; i < m_points.size(); ++i) {
+ if (m_points.at(i).x() > clickPos.x()) {
+ pos = i;
+ break;
+ }
}
-
- m_points.insert(pos, clickPos);
- m_locks.insert(pos, 0);
- m_currentIndex = pos;
- firePointChange();
- } else {
- m_currentIndex = index;
- }
- return true;
-
- } else if (me->button() == Qt::RightButton) {
- if (index >= 0 && m_editable) {
- if (m_locks[index] == 0) {
- m_locks.remove(index);
- m_points.remove(index);
+ break;
+ case YSort:
+ for (qsizetype i = 0; i < m_points.size(); ++i) {
+ if (m_points.at(i).y() > clickPos.y()) {
+ pos = i;
+ break;
+ }
}
- firePointChange();
- return true;
+ break;
+ default:
+ break;
}
+
+ m_points.insert(pos, clickPos);
+ m_locks.insert(pos, 0);
+ m_currentIndex = pos;
+ firePointChange();
+ } else {
+ m_currentIndex = index;
}
+ return true;
+ } else if (me->button() == Qt::RightButton) {
+ if (index >= 0 && m_editable) {
+ if (m_locks[index] == 0) {
+ m_locks.remove(index);
+ m_points.remove(index);
+ }
+ firePointChange();
+ return true;
+ }
}
+ }
+ break;
+
+ case QEvent::MouseButtonRelease:
+ if (!m_fingerPointMapping.isEmpty())
+ return true;
+ m_currentIndex = -1;
break;
- case QEvent::MouseButtonRelease:
- if (!m_fingerPointMapping.isEmpty())
- return true;
- m_currentIndex = -1;
- break;
+ case QEvent::MouseMove:
+ if (!m_fingerPointMapping.isEmpty())
+ return true;
+ if (m_currentIndex >= 0) {
+ auto *me = static_cast<const QMouseEvent *>(event);
+ movePoint(m_currentIndex, me->position().toPoint());
+ }
+ break;
- case QEvent::MouseMove:
- if (!m_fingerPointMapping.isEmpty())
- return true;
- if (m_currentIndex >= 0)
- movePoint(m_currentIndex, ((QMouseEvent *)event)->position().toPoint());
- break;
- case QEvent::TouchBegin:
- case QEvent::TouchUpdate:
+ case QEvent::TouchBegin:
+ case QEvent::TouchUpdate:
+ {
+ auto *touchEvent = static_cast<const QTouchEvent*>(event);
+ const auto points = touchEvent->points();
+ const qreal pointSize = qMax(m_pointSize.width(), m_pointSize.height());
+ for (const auto &point : points) {
+ const int id = point.id();
+ switch (point.state()) {
+ case QEventPoint::Pressed:
+ case QEventPoint::Stationary:
{
- const QTouchEvent *const touchEvent = static_cast<const QTouchEvent*>(event);
- const auto points = touchEvent->points();
- const qreal pointSize = qMax(m_pointSize.width(), m_pointSize.height());
- for (const auto &point : points) {
- const int id = point.id();
- switch (point.state()) {
- case QEventPoint::Pressed:
- {
- // find the point, move it
- const auto mappedPoints = m_fingerPointMapping.values();
- QSet<int> activePoints = QSet<int>(mappedPoints.begin(), mappedPoints.end());
- int activePoint = -1;
- qreal distance = -1;
- const int pointsCount = m_points.size();
- const int activePointCount = activePoints.size();
- if (pointsCount == 2 && activePointCount == 1) { // only two points
- activePoint = activePoints.contains(0) ? 1 : 0;
- } else {
- for (int i=0; i<pointsCount; ++i) {
- if (activePoints.contains(i))
- continue;
-
- qreal d = QLineF(point.position(), m_points.at(i)).length();
- if ((distance < 0 && d < 12 * pointSize) || d < distance) {
- distance = d;
- activePoint = i;
- }
-
- }
- }
- if (activePoint != -1) {
- m_fingerPointMapping.insert(point.id(), activePoint);
- movePoint(activePoint, point.position());
- }
- }
- break;
- case QEventPoint::Released:
- {
- // move the point and release
- QHash<int,int>::iterator it = m_fingerPointMapping.find(id);
- movePoint(it.value(), point.position());
- m_fingerPointMapping.erase(it);
- }
- break;
- case QEventPoint::Updated:
- {
- // move the point
- const int pointIdx = m_fingerPointMapping.value(id, -1);
- if (pointIdx >= 0) // do we track this point?
- movePoint(pointIdx, point.position());
+ // find the point, move it
+ const auto mappedPoints = m_fingerPointMapping.values();
+ QSet<qsizetype> activePoints(mappedPoints.begin(), mappedPoints.end());
+ qsizetype activePoint = -1;
+ qreal distance = -1;
+ const qsizetype pointsCount = m_points.size();
+ const qsizetype activePointCount = activePoints.size();
+ if (pointsCount == 2 && activePointCount == 1) { // only two points
+ activePoint = activePoints.contains(0) ? 1 : 0;
+ } else {
+ for (qsizetype i = 0; i < pointsCount; ++i) {
+ if (activePoints.contains(i))
+ continue;
+
+ qreal d = QLineF(point.position(), m_points.at(i)).length();
+ if ((distance < 0 && d < 12 * pointSize) || d < distance) {
+ distance = d;
+ activePoint = i;
}
- break;
- default:
- break;
+
}
}
- if (m_fingerPointMapping.isEmpty()) {
- event->ignore();
- return false;
- } else {
- return true;
+ if (activePoint != -1) {
+ m_fingerPointMapping.insert(id, activePoint);
+ movePoint(activePoint, point.position());
}
}
break;
- case QEvent::TouchEnd:
- if (m_fingerPointMapping.isEmpty()) {
- event->ignore();
- return false;
+ case QEventPoint::Released:
+ {
+ // move the point and release
+ const auto it = m_fingerPointMapping.constFind(id);
+ if (it != m_fingerPointMapping.constEnd()) {
+ movePoint(it.value(), point.position());
+ m_fingerPointMapping.erase(it);
+ }
}
- return true;
break;
-
- case QEvent::Resize:
- {
- QResizeEvent *e = (QResizeEvent *) event;
- if (e->oldSize().width() == 0 || e->oldSize().height() == 0)
- break;
- qreal stretch_x = e->size().width() / qreal(e->oldSize().width());
- qreal stretch_y = e->size().height() / qreal(e->oldSize().height());
- for (int i=0; i<m_points.size(); ++i) {
- QPointF p = m_points[i];
- movePoint(i, QPointF(p.x() * stretch_x, p.y() * stretch_y), false);
+ case QEventPoint::Updated:
+ {
+ // move the point
+ const qsizetype pointIdx = m_fingerPointMapping.value(id, -1);
+ if (pointIdx >= 0) // do we track this point?
+ movePoint(pointIdx, point.position());
}
-
- firePointChange();
break;
+ default:
+ break;
+ }
}
-
- case QEvent::Paint:
- {
- QWidget *that_widget = m_widget;
- m_widget = nullptr;
- QCoreApplication::sendEvent(object, event);
- m_widget = that_widget;
- paintPoints();
- return true;
+ if (m_fingerPointMapping.isEmpty()) {
+ event->ignore();
+ return false;
+ }
+ return true;
+ }
+ case QEvent::TouchEnd:
+ if (m_fingerPointMapping.isEmpty()) {
+ event->ignore();
+ return false;
}
- default:
+ return true;
+
+ case QEvent::Resize:
+ {
+ auto *e = static_cast<const QResizeEvent *>(event);
+ if (e->oldSize().width() <= 0 || e->oldSize().height() <= 0)
break;
+ qreal stretch_x = e->size().width() / qreal(e->oldSize().width());
+ qreal stretch_y = e->size().height() / qreal(e->oldSize().height());
+ for (qsizetype i = 0; i < m_points.size(); ++i) {
+ QPointF p = m_points.at(i);
+ movePoint(i, QPointF(p.x() * stretch_x, p.y() * stretch_y), false);
}
+
+ firePointChange();
+ break;
+ }
+
+ case QEvent::Paint:
+ {
+ QWidget *that_widget = m_widget;
+ m_widget = nullptr;
+ QCoreApplication::sendEvent(object, event);
+ m_widget = that_widget;
+ paintPoints();
+ return true;
+ }
+
+ default:
+ break;
}
return false;
@@ -284,17 +229,7 @@ bool HoverPoints::eventFilter(QObject *object, QEvent *event)
void HoverPoints::paintPoints()
{
QPainter p;
-#if QT_CONFIG(opengl)
- ArthurFrame *af = qobject_cast<ArthurFrame *>(m_widget);
- if (af && af->usesOpenGL() && af->glWindow()->isValid()) {
- af->glWindow()->makeCurrent();
- p.begin(af->glWindow());
- } else {
- p.begin(m_widget);
- }
-#else
p.begin(m_widget);
-#endif
p.setRenderHint(QPainter::Antialiasing);
@@ -304,8 +239,8 @@ void HoverPoints::paintPoints()
if (m_connectionType == CurveConnection) {
QPainterPath path;
path.moveTo(m_points.at(0));
- for (int i=1; i<m_points.size(); ++i) {
- QPointF p1 = m_points.at(i-1);
+ for (qsizetype i = 1; i < m_points.size(); ++i) {
+ QPointF p1 = m_points.at(i - 1);
QPointF p2 = m_points.at(i);
qreal distance = p2.x() - p1.x();
@@ -322,8 +257,8 @@ void HoverPoints::paintPoints()
p.setPen(m_pointPen);
p.setBrush(m_pointBrush);
- for (int i=0; i<m_points.size(); ++i) {
- QRectF bounds = pointBoundingRect(i);
+ for (const auto &point : std::as_const(m_points)) {
+ QRectF bounds = pointBoundingRect(point);
if (m_shape == CircleShape)
p.drawEllipse(bounds);
else
@@ -354,32 +289,28 @@ void HoverPoints::setPoints(const QPolygonF &points)
if (points.size() != m_points.size())
m_fingerPointMapping.clear();
m_points.clear();
- for (int i=0; i<points.size(); ++i)
+ for (qsizetype i = 0; i < points.size(); ++i)
m_points << bound_point(points.at(i), boundingRect(), 0);
m_locks.clear();
if (m_points.size() > 0) {
m_locks.resize(m_points.size());
-
m_locks.fill(0);
}
}
-
-void HoverPoints::movePoint(int index, const QPointF &point, bool emitUpdate)
+void HoverPoints::movePoint(qsizetype index, const QPointF &point, bool emitUpdate)
{
m_points[index] = bound_point(point, boundingRect(), m_locks.at(index));
if (emitUpdate)
firePointChange();
}
-
inline static bool x_less_than(const QPointF &p1, const QPointF &p2)
{
return p1.x() < p2.x();
}
-
inline static bool y_less_than(const QPointF &p1, const QPointF &p2)
{
return p1.y() < p2.y();
@@ -387,14 +318,11 @@ inline static bool y_less_than(const QPointF &p1, const QPointF &p2)
void HoverPoints::firePointChange()
{
-// printf("HoverPoints::firePointChange(), current=%d\n", m_currentIndex);
-
if (m_sortType != NoSort) {
QPointF oldCurrent;
- if (m_currentIndex != -1) {
+ if (m_currentIndex != -1)
oldCurrent = m_points[m_currentIndex];
- }
if (m_sortType == XSort)
std::sort(m_points.begin(), m_points.end(), x_less_than);
@@ -403,22 +331,14 @@ void HoverPoints::firePointChange()
// Compensate for changed order...
if (m_currentIndex != -1) {
- for (int i=0; i<m_points.size(); ++i) {
+ for (qsizetype i = 0; i < m_points.size(); ++i) {
if (m_points[i] == oldCurrent) {
m_currentIndex = i;
break;
}
}
}
-
-// printf(" - firePointChange(), current=%d\n", m_currentIndex);
-
}
-// for (int i=0; i<m_points.size(); ++i) {
-// printf(" - point(%2d)=[%.2f, %.2f], lock=%d\n",
-// i, m_points.at(i).x(), m_points.at(i).y(), m_locks.at(i));
-// }
-
emit pointsChanged(m_points);
}