diff options
Diffstat (limited to 'examples')
23 files changed, 92 insertions, 89 deletions
diff --git a/examples/opengl/legacy/framebufferobject2/framebufferobject2.pro b/examples/opengl/legacy/framebufferobject2/framebufferobject2.pro index e0067cf27f..78fc6b1a63 100644 --- a/examples/opengl/legacy/framebufferobject2/framebufferobject2.pro +++ b/examples/opengl/legacy/framebufferobject2/framebufferobject2.pro @@ -5,11 +5,7 @@ RESOURCES += framebufferobject2.qrc QT += opengl widgets # install -target.path = $$[QT_INSTALL_EXAMPLES]/opengl/framebufferobject2 +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/legacy/framebufferobject2 INSTALLS += target -contains(QT_CONFIG, opengles.) { - contains(QT_CONFIG, angle): \ - warning("Qt was built with ANGLE, which provides only OpenGL ES 2.0 on top of DirectX 9.0c") - error("This example requires Qt to be configured with -opengl desktop") -} +contains(QT_CONFIG, opengles.|angle|dynamicgl):error("This example requires Qt to be configured with -opengl desktop") diff --git a/examples/opengl/legacy/grabber/grabber.pro b/examples/opengl/legacy/grabber/grabber.pro index b8567580f0..1db0e23156 100644 --- a/examples/opengl/legacy/grabber/grabber.pro +++ b/examples/opengl/legacy/grabber/grabber.pro @@ -6,11 +6,7 @@ SOURCES = glwidget.cpp \ QT += opengl widgets # install -target.path = $$[QT_INSTALL_EXAMPLES]/opengl/grabber +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/legacy/grabber INSTALLS += target -contains(QT_CONFIG, opengles.) { - contains(QT_CONFIG, angle): \ - warning("Qt was built with ANGLE, which provides only OpenGL ES 2.0 on top of DirectX 9.0c") - error("This example requires Qt to be configured with -opengl desktop") -} +contains(QT_CONFIG, opengles.|angle|dynamicgl):error("This example requires Qt to be configured with -opengl desktop") diff --git a/examples/opengl/legacy/hellogl/glwidget.cpp b/examples/opengl/legacy/hellogl/glwidget.cpp index 02501cd99e..122f7ddfe1 100644 --- a/examples/opengl/legacy/hellogl/glwidget.cpp +++ b/examples/opengl/legacy/hellogl/glwidget.cpp @@ -128,6 +128,8 @@ void GLWidget::setZRotation(int angle) //! [6] void GLWidget::initializeGL() { + initializeOpenGLFunctions(); + qglClearColor(qtPurple.dark()); logo = new QtLogo(this, 64); @@ -153,7 +155,7 @@ void GLWidget::paintGL() glRotatef(xRot / 16.0, 1.0, 0.0, 0.0); glRotatef(yRot / 16.0, 0.0, 1.0, 0.0); glRotatef(zRot / 16.0, 0.0, 0.0, 1.0); - logo->draw(); + logo->draw(static_cast<QOpenGLFunctions_1_1 *>(this)); } //! [7] diff --git a/examples/opengl/legacy/hellogl/glwidget.h b/examples/opengl/legacy/hellogl/glwidget.h index 994e38e13d..9aca4451df 100644 --- a/examples/opengl/legacy/hellogl/glwidget.h +++ b/examples/opengl/legacy/hellogl/glwidget.h @@ -42,11 +42,12 @@ #define GLWIDGET_H #include <QGLWidget> +#include <QOpenGLFunctions_1_1> class QtLogo; //! [0] -class GLWidget : public QGLWidget +class GLWidget : public QGLWidget, public QOpenGLFunctions_1_1 { Q_OBJECT diff --git a/examples/opengl/legacy/hellogl/hellogl.pro b/examples/opengl/legacy/hellogl/hellogl.pro index 500bd85b3c..c211242fd2 100644 --- a/examples/opengl/legacy/hellogl/hellogl.pro +++ b/examples/opengl/legacy/hellogl/hellogl.pro @@ -11,11 +11,7 @@ SOURCES = glwidget.cpp \ QT += opengl widgets # install -target.path = $$[QT_INSTALL_EXAMPLES]/opengl/hellogl +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/legacy/hellogl INSTALLS += target -contains(QT_CONFIG, opengles.) { - contains(QT_CONFIG, angle): \ - warning("Qt was built with ANGLE, which provides only OpenGL ES 2.0 on top of DirectX 9.0c") - error("This example requires Qt to be configured with -opengl desktop") -} +contains(QT_CONFIG, opengles.|angle):error("This example requires Qt to be configured with -opengl desktop") diff --git a/examples/opengl/legacy/overpainting/glwidget.cpp b/examples/opengl/legacy/overpainting/glwidget.cpp index b41bc31126..52b6c35801 100644 --- a/examples/opengl/legacy/overpainting/glwidget.cpp +++ b/examples/opengl/legacy/overpainting/glwidget.cpp @@ -115,6 +115,8 @@ void GLWidget::setZRotation(int angle) //! [2] void GLWidget::initializeGL() { + initializeOpenGLFunctions(); + glEnable(GL_MULTISAMPLE); logo = new QtLogo(this); @@ -173,7 +175,7 @@ void GLWidget::paintEvent(QPaintEvent *event) glRotatef(yRot / 16.0, 0.0, 1.0, 0.0); glRotatef(zRot / 16.0, 0.0, 0.0, 1.0); - logo->draw(); + logo->draw(static_cast<QOpenGLFunctions_1_1 *>(this)); //! [7] //! [8] diff --git a/examples/opengl/legacy/overpainting/glwidget.h b/examples/opengl/legacy/overpainting/glwidget.h index dd5c0ba9ff..7e62a00170 100644 --- a/examples/opengl/legacy/overpainting/glwidget.h +++ b/examples/opengl/legacy/overpainting/glwidget.h @@ -42,13 +42,14 @@ #define GLWIDGET_H #include <QGLWidget> +#include <QOpenGLFunctions_1_1> #include <QTimer> class Bubble; class QtLogo; //! [0] -class GLWidget : public QGLWidget +class GLWidget : public QGLWidget, public QOpenGLFunctions_1_1 { Q_OBJECT diff --git a/examples/opengl/legacy/overpainting/overpainting.pro b/examples/opengl/legacy/overpainting/overpainting.pro index c1bda7853d..cc46f18889 100644 --- a/examples/opengl/legacy/overpainting/overpainting.pro +++ b/examples/opengl/legacy/overpainting/overpainting.pro @@ -13,11 +13,7 @@ SOURCES = bubble.cpp \ qtlogo.cpp # install -target.path = $$[QT_INSTALL_EXAMPLES]/opengl/overpainting +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/legacy/overpainting INSTALLS += target -contains(QT_CONFIG, opengles.) { - contains(QT_CONFIG, angle): \ - warning("Qt was built with ANGLE, which provides only OpenGL ES 2.0 on top of DirectX 9.0c") - error("This example requires Qt to be configured with -opengl desktop") -} +contains(QT_CONFIG, opengles.|angle):error("This example requires Qt to be configured with -opengl desktop") diff --git a/examples/opengl/legacy/pbuffers/pbuffers.pro b/examples/opengl/legacy/pbuffers/pbuffers.pro index a349e39f68..d779a2a2dc 100644 --- a/examples/opengl/legacy/pbuffers/pbuffers.pro +++ b/examples/opengl/legacy/pbuffers/pbuffers.pro @@ -7,11 +7,7 @@ RESOURCES += pbuffers.qrc QT += opengl widgets # install -target.path = $$[QT_INSTALL_EXAMPLES]/opengl/pbuffers +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/legacy/pbuffers INSTALLS += target -contains(QT_CONFIG, opengles.) { - contains(QT_CONFIG, angle): \ - warning("Qt was built with ANGLE, which provides only OpenGL ES 2.0 on top of DirectX 9.0c") - error("This example requires Qt to be configured with -opengl desktop") -} +contains(QT_CONFIG, opengles.|angle|dynamicgl):error("This example requires Qt to be configured with -opengl desktop") diff --git a/examples/opengl/legacy/pbuffers2/pbuffers2.pro b/examples/opengl/legacy/pbuffers2/pbuffers2.pro index f9dd269eea..2ba40a6f74 100644 --- a/examples/opengl/legacy/pbuffers2/pbuffers2.pro +++ b/examples/opengl/legacy/pbuffers2/pbuffers2.pro @@ -5,11 +5,7 @@ SOURCES += glwidget.cpp main.cpp RESOURCES += pbuffers2.qrc # install -target.path = $$[QT_INSTALL_EXAMPLES]/opengl/pbuffers2 +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/legacy/pbuffers2 INSTALLS += target -contains(QT_CONFIG, opengles.) { - contains(QT_CONFIG, angle): \ - warning("Qt was built with ANGLE, which provides only OpenGL ES 2.0 on top of DirectX 9.0c") - error("This example requires Qt to be configured with -opengl desktop") -} +contains(QT_CONFIG, opengles.|angle|dynamicgl):error("This example requires Qt to be configured with -opengl desktop") diff --git a/examples/opengl/legacy/samplebuffers/samplebuffers.pro b/examples/opengl/legacy/samplebuffers/samplebuffers.pro index b57599aae4..3719f5039d 100644 --- a/examples/opengl/legacy/samplebuffers/samplebuffers.pro +++ b/examples/opengl/legacy/samplebuffers/samplebuffers.pro @@ -4,11 +4,7 @@ SOURCES += glwidget.cpp main.cpp QT += opengl widgets # install -target.path = $$[QT_INSTALL_EXAMPLES]/opengl/samplebuffers +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/legacy/samplebuffers INSTALLS += target -contains(QT_CONFIG, opengles.) { - contains(QT_CONFIG, angle): \ - warning("Qt was built with ANGLE, which provides only OpenGL ES 2.0 on top of DirectX 9.0c") - error("This example requires Qt to be configured with -opengl desktop") -} +contains(QT_CONFIG, opengles.|angle|dynamicgl):error("This example requires Qt to be configured with -opengl desktop") diff --git a/examples/opengl/legacy/shared/qtlogo.cpp b/examples/opengl/legacy/shared/qtlogo.cpp index efe3fb0201..0d960dd4b6 100644 --- a/examples/opengl/legacy/shared/qtlogo.cpp +++ b/examples/opengl/legacy/shared/qtlogo.cpp @@ -43,6 +43,7 @@ #include <QGLWidget> #include <QMatrix4x4> #include <QVector3D> +#include <QOpenGLFunctions_1_1> #include <qmath.h> @@ -60,7 +61,7 @@ struct Geometry void appendSmooth(const QVector3D &a, const QVector3D &n, int from); void appendFaceted(const QVector3D &a, const QVector3D &n); void finalize(); - void loadArrays() const; + void loadArrays(QOpenGLFunctions_1_1 *functions) const; }; //! [0] @@ -73,7 +74,7 @@ public: void setSmoothing(Smoothing s) { sm = s; } void translate(const QVector3D &t); void rotate(qreal deg, QVector3D axis); - void draw() const; + void draw(QOpenGLFunctions_1_1 *functions) const; void addTri(const QVector3D &a, const QVector3D &b, const QVector3D &c, const QVector3D &n); void addQuad(const QVector3D &a, const QVector3D &b, const QVector3D &c, const QVector3D &d); @@ -96,10 +97,10 @@ static inline void qSetColor(float colorVec[], QColor c) colorVec[3] = c.alphaF(); } -void Geometry::loadArrays() const +void Geometry::loadArrays(QOpenGLFunctions_1_1 *functions) const { - glVertexPointer(3, GL_FLOAT, 0, vertices.constData()); - glNormalPointer(GL_FLOAT, 0, normals.constData()); + functions->glVertexPointer(3, GL_FLOAT, 0, vertices.constData()); + functions->glNormalPointer(GL_FLOAT, 0, normals.constData()); } void Geometry::finalize() @@ -170,15 +171,15 @@ void Patch::translate(const QVector3D &t) } //! [2] -void Patch::draw() const +void Patch::draw(QOpenGLFunctions_1_1 *functions) const { - glPushMatrix(); - glMultMatrixf(mat.constData()); - glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, faceColor); + functions->glPushMatrix(); + functions->glMultMatrixf(mat.constData()); + functions->glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, faceColor); const GLushort *indices = geom->faces.constData(); - glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, indices + start); - glPopMatrix(); + functions->glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, indices + start); + functions->glPopMatrix(); } //! [2] @@ -371,17 +372,17 @@ void QtLogo::buildGeometry(int divisions, qreal scale) //! [3] //! [4] -void QtLogo::draw() const +void QtLogo::draw(QOpenGLFunctions_1_1 *functions) const { - geom->loadArrays(); + geom->loadArrays(functions); - glEnableClientState(GL_VERTEX_ARRAY); - glEnableClientState(GL_NORMAL_ARRAY); + functions->glEnableClientState(GL_VERTEX_ARRAY); + functions->glEnableClientState(GL_NORMAL_ARRAY); for (int i = 0; i < parts.count(); ++i) - parts[i]->draw(); + parts[i]->draw(functions); - glDisableClientState(GL_VERTEX_ARRAY); - glDisableClientState(GL_NORMAL_ARRAY); + functions->glDisableClientState(GL_VERTEX_ARRAY); + functions->glDisableClientState(GL_NORMAL_ARRAY); } //! [4] diff --git a/examples/opengl/legacy/shared/qtlogo.h b/examples/opengl/legacy/shared/qtlogo.h index 562435daed..9bd15a1431 100644 --- a/examples/opengl/legacy/shared/qtlogo.h +++ b/examples/opengl/legacy/shared/qtlogo.h @@ -44,6 +44,7 @@ #include <QObject> #include <QColor> +class QOpenGLFunctions_1_1; class Patch; struct Geometry; @@ -54,7 +55,7 @@ public: explicit QtLogo(QObject *parent, int d = 64, qreal s = 1.0); ~QtLogo(); void setColor(QColor c); - void draw() const; + void draw(QOpenGLFunctions_1_1 *functions) const; private: void buildGeometry(int d, qreal s); diff --git a/examples/opengl/qopenglwidget/glwidget.cpp b/examples/opengl/qopenglwidget/glwidget.cpp index f93e667615..df52e3efbf 100644 --- a/examples/opengl/qopenglwidget/glwidget.cpp +++ b/examples/opengl/qopenglwidget/glwidget.cpp @@ -537,14 +537,14 @@ void GLWidget::setTransparent(bool transparent) window()->update(); } -void GLWidget::resizeGL(int w, int h) +void GLWidget::resizeGL(int, int) { if (m_hasButton) { if (!m_btn) { - m_btn = new QPushButton("A widget on top.\nPress me!", this); + m_btn = new QPushButton("A widget on top.\nPress for more widgets.", this); connect(m_btn, &QPushButton::clicked, this, &GLWidget::handleButtonPress); } - m_btn->move(w / 2, h / 2); + m_btn->move(20, 80); } } diff --git a/examples/opengl/qopenglwidget/mainwindow.cpp b/examples/opengl/qopenglwidget/mainwindow.cpp index 6cf1d5d6e2..22111afdcb 100644 --- a/examples/opengl/qopenglwidget/mainwindow.cpp +++ b/examples/opengl/qopenglwidget/mainwindow.cpp @@ -47,6 +47,7 @@ #include <QLabel> #include <QCheckBox> #include <QSpinBox> +#include <QScrollArea> #include "glwidget.h" @@ -69,7 +70,7 @@ MainWindow::MainWindow() "and therefore an interval < 16 ms will likely lead to a 60 FPS update rate."); QGroupBox *updateGroupBox = new QGroupBox(this); QCheckBox *timerBased = new QCheckBox("Use timer", this); - timerBased->setChecked(true); + timerBased->setChecked(false); timerBased->setToolTip("Toggles using a timer to trigger update().\n" "When not set, each paintGL() schedules the next update immediately,\n" "expecting the blocking swap to throttle the thread.\n" @@ -87,7 +88,7 @@ MainWindow::MainWindow() slider->setRange(0, 50); slider->setSliderPosition(30); m_timer->setInterval(10); - label->setText("A QOpenGLWidget"); + label->setText("A scrollable QOpenGLWidget"); label->setAlignment(Qt::AlignHCenter); QGroupBox * groupBox = new QGroupBox(this); @@ -96,7 +97,10 @@ MainWindow::MainWindow() m_layout = new QGridLayout(groupBox); - m_layout->addWidget(glwidget,1,0,8,1); + QScrollArea *scrollArea = new QScrollArea; + scrollArea->setWidget(glwidget); + + m_layout->addWidget(scrollArea,1,0,8,1); m_layout->addWidget(label,9,0,1,1); m_layout->addWidget(updateGroupBox, 10, 0, 1, 1); m_layout->addWidget(slider, 11,0,1,1); @@ -134,7 +138,10 @@ MainWindow::MainWindow() connect(timerBased, &QCheckBox::toggled, this, &MainWindow::timerUsageChanged); connect(timerBased, &QCheckBox::toggled, updateInterval, &QWidget::setEnabled); - m_timer->start(); + if (timerBased->isChecked()) + m_timer->start(); + else + updateInterval->setEnabled(false); } void MainWindow::updateIntervalChanged(int value) @@ -170,3 +177,8 @@ void MainWindow::timerUsageChanged(bool enabled) w->update(); } } + +void MainWindow::resizeEvent(QResizeEvent *) +{ + m_glWidgets[0]->setMinimumSize(size() + QSize(128, 128)); +} diff --git a/examples/opengl/qopenglwidget/mainwindow.h b/examples/opengl/qopenglwidget/mainwindow.h index f1b2c51e53..9ad8a01339 100644 --- a/examples/opengl/qopenglwidget/mainwindow.h +++ b/examples/opengl/qopenglwidget/mainwindow.h @@ -56,6 +56,8 @@ public: void addNew(); bool timerEnabled() const { return m_timer->isActive(); } + void resizeEvent(QResizeEvent *); + private slots: void updateIntervalChanged(int value); void timerUsageChanged(bool enabled); diff --git a/examples/touch/fingerpaint/scribblearea.cpp b/examples/touch/fingerpaint/scribblearea.cpp index 469c6b1a70..05598c134c 100644 --- a/examples/touch/fingerpaint/scribblearea.cpp +++ b/examples/touch/fingerpaint/scribblearea.cpp @@ -187,13 +187,14 @@ bool ScribbleArea::event(QEvent *event) foreach (const QTouchEvent::TouchPoint &touchPoint, touchPoints) { switch (touchPoint.state()) { case Qt::TouchPointStationary: - // don't do anything if this touch point hasn't moved + case Qt::TouchPointReleased: + // don't do anything if this touch point hasn't moved or has been released continue; default: { QRectF rect = touchPoint.rect(); if (rect.isEmpty()) { - qreal diameter = MinimumDiameter; + qreal diameter = MaximumDiameter; if (touch->device()->capabilities() & QTouchDevice::Pressure) diameter = MinimumDiameter + (MaximumDiameter - MinimumDiameter) * touchPoint.pressure(); rect.setSize(QSizeF(diameter, diameter)); diff --git a/examples/widgets/doc/images/imagegestures-example.jpg b/examples/widgets/doc/images/imagegestures-example.jpg Binary files differnew file mode 100644 index 0000000000..c8484b4a71 --- /dev/null +++ b/examples/widgets/doc/images/imagegestures-example.jpg diff --git a/examples/widgets/doc/src/plugandpaint.qdoc b/examples/widgets/doc/src/plugandpaint.qdoc index 7a8a2cf2fc..a1e26272bc 100644 --- a/examples/widgets/doc/src/plugandpaint.qdoc +++ b/examples/widgets/doc/src/plugandpaint.qdoc @@ -30,8 +30,7 @@ \title Plug & Paint Example \ingroup examples-widgets-tools - \brief The Plug & Paint example demonstrates how to write Qt - applications that can be extended through plugins. + \brief Demonstrates how to extend Qt applications using plugins. \image plugandpaint.png Screenshot of the Plug & Paint example @@ -314,6 +313,9 @@ /*! \example tools/plugandpaintplugins/basictools \title Plug & Paint Basic Tools Example + \brief A plugin providing the basic tools for painting functionality. + + \image plugandpaint.png Screenshot of the Plug & Paint example The Basic Tools example is a static plugin for the \l{tools/plugandpaint}{Plug & Paint} example. It provides a set @@ -499,6 +501,9 @@ /*! \example tools/plugandpaintplugins/extrafilters \title Plug & Paint Extra Filters Example + \brief A plugin providing the extra filters. + + \image plugandpaint.png Screenshot of the Plug & Paint example The Extra Filters example is a plugin for the \l{tools/plugandpaint}{Plug & Paint} example. It provides a set diff --git a/examples/widgets/gestures/imagegestures/doc/src/imagegestures.qdoc b/examples/widgets/gestures/imagegestures/doc/src/imagegestures.qdoc index 07acef6b4d..2751c64e76 100644 --- a/examples/widgets/gestures/imagegestures/doc/src/imagegestures.qdoc +++ b/examples/widgets/gestures/imagegestures/doc/src/imagegestures.qdoc @@ -28,10 +28,13 @@ /*! \example gestures/imagegestures \title Image Gestures Example + \brief Demonstrates the use of simple gestures in a widget This example shows how to enable gestures for a widget and use gesture input to perform actions. + \image imagegestures-example.jpg + We use two classes to create the user interface for the application: \c MainWidget and \c ImageWidget. The \c MainWidget class is simply used as a container for the \c ImageWidget class, which we will configure to accept gesture input. Since we diff --git a/examples/widgets/graphicsview/boxes/boxes.pro b/examples/widgets/graphicsview/boxes/boxes.pro index e608b1c845..15d26f02f0 100644 --- a/examples/widgets/graphicsview/boxes/boxes.pro +++ b/examples/widgets/graphicsview/boxes/boxes.pro @@ -1,10 +1,6 @@ QT += opengl widgets -contains(QT_CONFIG, opengles.) { - contains(QT_CONFIG, angle): \ - warning("Qt was built with ANGLE, which provides only OpenGL ES 2.0 on top of DirectX 9.0c") - error("This example requires Qt to be configured with -opengl desktop") -} +contains(QT_CONFIG, opengles.|angle|dynamicgl):error("This example requires Qt to be configured with -opengl desktop") HEADERS += 3rdparty/fbm.h \ glbuffers.h \ diff --git a/examples/widgets/widgets/imageviewer/imageviewer.cpp b/examples/widgets/widgets/imageviewer/imageviewer.cpp index c32f21e7f3..0b8513f090 100644 --- a/examples/widgets/widgets/imageviewer/imageviewer.cpp +++ b/examples/widgets/widgets/imageviewer/imageviewer.cpp @@ -107,7 +107,7 @@ void ImageViewer::open() mimeTypeFilters.sort(); const QStringList picturesLocations = QStandardPaths::standardLocations(QStandardPaths::PicturesLocation); QFileDialog dialog(this, tr("Open File"), - picturesLocations.isEmpty() ? QDir::currentPath() : picturesLocations.first()); + picturesLocations.isEmpty() ? QDir::currentPath() : picturesLocations.last()); dialog.setAcceptMode(QFileDialog::AcceptOpen); dialog.setMimeTypeFilters(mimeTypeFilters); dialog.selectMimeTypeFilter("image/jpeg"); diff --git a/examples/widgets/windowcontainer/windowcontainer.cpp b/examples/widgets/windowcontainer/windowcontainer.cpp index 022b6dafc4..a38a10e6f6 100644 --- a/examples/widgets/windowcontainer/windowcontainer.cpp +++ b/examples/widgets/windowcontainer/windowcontainer.cpp @@ -92,10 +92,12 @@ public: } void mousePressEvent(QMouseEvent *e) Q_DECL_OVERRIDE { - m_mouseDown = true; - m_polygon.clear(); - m_polygon.append(e->pos()); - renderLater(); + if (!m_mouseDown) { + m_mouseDown = true; + m_polygon.clear(); + m_polygon.append(e->pos()); + renderLater(); + } } void mouseMoveEvent(QMouseEvent *e) Q_DECL_OVERRIDE { @@ -106,9 +108,11 @@ public: } void mouseReleaseEvent(QMouseEvent *e) Q_DECL_OVERRIDE { - m_mouseDown = false; - m_polygon.append(e->pos()); - renderLater(); + if (m_mouseDown) { + m_mouseDown = false; + m_polygon.append(e->pos()); + renderLater(); + } } void focusInEvent(QFocusEvent *) Q_DECL_OVERRIDE { |
