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Diffstat (limited to 'examples/painting/shared/hoverpoints.cpp')
| -rw-r--r-- | examples/painting/shared/hoverpoints.cpp | 415 |
1 files changed, 0 insertions, 415 deletions
diff --git a/examples/painting/shared/hoverpoints.cpp b/examples/painting/shared/hoverpoints.cpp deleted file mode 100644 index 824d92eb30..0000000000 --- a/examples/painting/shared/hoverpoints.cpp +++ /dev/null @@ -1,415 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the demonstration applications of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifdef QT_OPENGL_SUPPORT -#include <QGLWidget> -#endif - -#include "arthurwidgets.h" -#include "hoverpoints.h" - -#define printf - -HoverPoints::HoverPoints(QWidget *widget, PointShape shape) - : QObject(widget) -{ - 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, SIGNAL(pointsChanged(QPolygonF)), - m_widget, SLOT(update())); -} - - -void HoverPoints::setEnabled(bool enabled) -{ - if (m_enabled != enabled) { - m_enabled = enabled; - m_widget->update(); - } -} - - -bool HoverPoints::eventFilter(QObject *object, QEvent *event) -{ - if (object == m_widget && m_enabled) { - switch (event->type()) { - - case QEvent::MouseButtonPress: - { - if (!m_fingerPointMapping.isEmpty()) - return true; - QMouseEvent *me = (QMouseEvent *) event; - - QPointF clickPos = me->pos(); - 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; - } - } - - 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; - } - } - - 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::MouseMove: - if (!m_fingerPointMapping.isEmpty()) - return true; - if (m_currentIndex >= 0) - movePoint(m_currentIndex, ((QMouseEvent *)event)->pos()); - break; - case QEvent::TouchBegin: - case QEvent::TouchUpdate: - { - const QTouchEvent *const touchEvent = static_cast<const QTouchEvent*>(event); - const QList<QTouchEvent::TouchPoint> points = touchEvent->touchPoints(); - const qreal pointSize = qMax(m_pointSize.width(), m_pointSize.height()); - foreach (const QTouchEvent::TouchPoint &touchPoint, points) { - const int id = touchPoint.id(); - switch (touchPoint.state()) { - case Qt::TouchPointPressed: - { - // find the point, move it - QSet<int> activePoints = QSet<int>::fromList(m_fingerPointMapping.values()); - 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(touchPoint.pos(), m_points.at(i)).length(); - if ((distance < 0 && d < 12 * pointSize) || d < distance) { - distance = d; - activePoint = i; - } - - } - } - if (activePoint != -1) { - m_fingerPointMapping.insert(touchPoint.id(), activePoint); - movePoint(activePoint, touchPoint.pos()); - } - } - break; - case Qt::TouchPointReleased: - { - // move the point and release - QHash<int,int>::iterator it = m_fingerPointMapping.find(id); - movePoint(it.value(), touchPoint.pos()); - m_fingerPointMapping.erase(it); - } - break; - case Qt::TouchPointMoved: - { - // move the point - const int pointIdx = m_fingerPointMapping.value(id, -1); - if (pointIdx >= 0) // do we track this point? - movePoint(pointIdx, touchPoint.pos()); - } - break; - default: - break; - } - } - if (m_fingerPointMapping.isEmpty()) { - event->ignore(); - return false; - } else { - return true; - } - } - break; - case QEvent::TouchEnd: - if (m_fingerPointMapping.isEmpty()) { - event->ignore(); - return false; - } - 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); - } - - firePointChange(); - break; - } - - case QEvent::Paint: - { - QWidget *that_widget = m_widget; - m_widget = 0; - QApplication::sendEvent(object, event); - m_widget = that_widget; - paintPoints(); -#ifdef QT_OPENGL_SUPPORT - ArthurFrame *af = qobject_cast<ArthurFrame *>(that_widget); - if (af && af->usesOpenGL()) - af->glWidget()->swapBuffers(); -#endif - return true; - } - default: - break; - } - } - - return false; -} - - -void HoverPoints::paintPoints() -{ - QPainter p; -#ifdef QT_OPENGL_SUPPORT - ArthurFrame *af = qobject_cast<ArthurFrame *>(m_widget); - if (af && af->usesOpenGL()) - p.begin(af->glWidget()); - else - p.begin(m_widget); -#else - p.begin(m_widget); -#endif - - p.setRenderHint(QPainter::Antialiasing); - - if (m_connectionPen.style() != Qt::NoPen && m_connectionType != NoConnection) { - p.setPen(m_connectionPen); - - 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); - QPointF p2 = m_points.at(i); - qreal distance = p2.x() - p1.x(); - - path.cubicTo(p1.x() + distance / 2, p1.y(), - p1.x() + distance / 2, p2.y(), - p2.x(), p2.y()); - } - p.drawPath(path); - } else { - p.drawPolyline(m_points); - } - } - - p.setPen(m_pointPen); - p.setBrush(m_pointBrush); - - for (int i=0; i<m_points.size(); ++i) { - QRectF bounds = pointBoundingRect(i); - if (m_shape == CircleShape) - p.drawEllipse(bounds); - else - p.drawRect(bounds); - } -} - -static QPointF bound_point(const QPointF &point, const QRectF &bounds, int lock) -{ - QPointF p = point; - - qreal left = bounds.left(); - qreal right = bounds.right(); - qreal top = bounds.top(); - qreal bottom = bounds.bottom(); - - if (p.x() < left || (lock & HoverPoints::LockToLeft)) p.setX(left); - else if (p.x() > right || (lock & HoverPoints::LockToRight)) p.setX(right); - - if (p.y() < top || (lock & HoverPoints::LockToTop)) p.setY(top); - else if (p.y() > bottom || (lock & HoverPoints::LockToBottom)) p.setY(bottom); - - return p; -} - -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) - 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) -{ - 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(); -} - -void HoverPoints::firePointChange() -{ -// printf("HoverPoints::firePointChange(), current=%d\n", m_currentIndex); - - if (m_sortType != NoSort) { - - QPointF oldCurrent; - if (m_currentIndex != -1) { - oldCurrent = m_points[m_currentIndex]; - } - - if (m_sortType == XSort) - qSort(m_points.begin(), m_points.end(), x_less_than); - else if (m_sortType == YSort) - qSort(m_points.begin(), m_points.end(), y_less_than); - - // Compensate for changed order... - if (m_currentIndex != -1) { - for (int 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); -} |