diff options
Diffstat (limited to 'examples/widgets/painting/gradients/gradients.cpp')
| -rw-r--r-- | examples/widgets/painting/gradients/gradients.cpp | 66 |
1 files changed, 59 insertions, 7 deletions
diff --git a/examples/widgets/painting/gradients/gradients.cpp b/examples/widgets/painting/gradients/gradients.cpp index 78c174a8bf..004f6710cd 100644 --- a/examples/widgets/painting/gradients/gradients.cpp +++ b/examples/widgets/painting/gradients/gradients.cpp @@ -301,8 +301,15 @@ GradientWidget::GradientWidget(QWidget *parent) m_reflectSpreadButton = new QRadioButton(tr("Reflect Spread"), spreadGroup); m_repeatSpreadButton = new QRadioButton(tr("Repeat Spread"), spreadGroup); + QGroupBox *presetsGroup = new QGroupBox(mainGroup); + presetsGroup->setTitle(tr("Presets")); + QPushButton *prevPresetButton = new QPushButton(tr("<"), presetsGroup); + m_presetButton = new QPushButton(tr("(unset)"), presetsGroup); + QPushButton *nextPresetButton = new QPushButton(tr(">"), presetsGroup); + updatePresetName(); + QGroupBox *defaultsGroup = new QGroupBox(mainGroup); - defaultsGroup->setTitle(tr("Defaults")); + defaultsGroup->setTitle(tr("Examples")); QPushButton *default1Button = new QPushButton(tr("1"), defaultsGroup); QPushButton *default2Button = new QPushButton(tr("2"), defaultsGroup); QPushButton *default3Button = new QPushButton(tr("3"), defaultsGroup); @@ -310,13 +317,11 @@ GradientWidget::GradientWidget(QWidget *parent) QPushButton *showSourceButton = new QPushButton(mainGroup); showSourceButton->setText(tr("Show Source")); -#ifdef QT_OPENGL_SUPPORT +#if QT_CONFIG(opengl) QPushButton *enableOpenGLButton = new QPushButton(mainGroup); enableOpenGLButton->setText(tr("Use OpenGL")); enableOpenGLButton->setCheckable(true); enableOpenGLButton->setChecked(m_renderer->usesOpenGL()); - if (!QGLFormat::hasOpenGL()) - enableOpenGLButton->hide(); #endif QPushButton *whatsThisButton = new QPushButton(mainGroup); whatsThisButton->setText(tr("What's This?")); @@ -327,15 +332,16 @@ GradientWidget::GradientWidget(QWidget *parent) mainLayout->addWidget(m_renderer); mainLayout->addWidget(mainGroup); - mainGroup->setFixedWidth(180); + mainGroup->setFixedWidth(200); QVBoxLayout *mainGroupLayout = new QVBoxLayout(mainGroup); mainGroupLayout->addWidget(editorGroup); mainGroupLayout->addWidget(typeGroup); mainGroupLayout->addWidget(spreadGroup); + mainGroupLayout->addWidget(presetsGroup); mainGroupLayout->addWidget(defaultsGroup); mainGroupLayout->addStretch(1); mainGroupLayout->addWidget(showSourceButton); -#ifdef QT_OPENGL_SUPPORT +#if QT_CONFIG(opengl) mainGroupLayout->addWidget(enableOpenGLButton); #endif mainGroupLayout->addWidget(whatsThisButton); @@ -353,6 +359,11 @@ GradientWidget::GradientWidget(QWidget *parent) spreadGroupLayout->addWidget(m_repeatSpreadButton); spreadGroupLayout->addWidget(m_reflectSpreadButton); + QHBoxLayout *presetsGroupLayout = new QHBoxLayout(presetsGroup); + presetsGroupLayout->addWidget(prevPresetButton); + presetsGroupLayout->addWidget(m_presetButton, 1); + presetsGroupLayout->addWidget(nextPresetButton); + QHBoxLayout *defaultsGroupLayout = new QHBoxLayout(defaultsGroup); defaultsGroupLayout->addWidget(default1Button); defaultsGroupLayout->addWidget(default2Button); @@ -375,6 +386,13 @@ GradientWidget::GradientWidget(QWidget *parent) connect(m_repeatSpreadButton, &QRadioButton::clicked, m_renderer, &GradientRenderer::setRepeatSpread); + connect(prevPresetButton, &QPushButton::clicked, + this, &GradientWidget::setPrevPreset); + connect(m_presetButton, &QPushButton::clicked, + this, &GradientWidget::setPreset); + connect(nextPresetButton, &QPushButton::clicked, + this, &GradientWidget::setNextPreset); + connect(default1Button, &QPushButton::clicked, this, &GradientWidget::setDefault1); connect(default2Button, &QPushButton::clicked, @@ -386,7 +404,7 @@ GradientWidget::GradientWidget(QWidget *parent) connect(showSourceButton, &QPushButton::clicked, m_renderer, &GradientRenderer::showSource); -#ifdef QT_OPENGL_SUPPORT +#if QT_CONFIG(opengl) connect(enableOpenGLButton, QOverload<bool>::of(&QPushButton::clicked), m_renderer, &ArthurFrame::enableOpenGL); #endif @@ -471,6 +489,40 @@ void GradientWidget::setDefault(int config) m_renderer->setGradientStops(stops); } +void GradientWidget::updatePresetName() +{ + QMetaEnum presetEnum = QMetaEnum::fromType<QGradient::Preset>(); + m_presetButton->setText(QLatin1String(presetEnum.key(m_presetIndex))); +} + +void GradientWidget::changePresetBy(int indexOffset) +{ + QMetaEnum presetEnum = QMetaEnum::fromType<QGradient::Preset>(); + m_presetIndex = qBound(0, m_presetIndex + indexOffset, presetEnum.keyCount() - 1); + + QGradient::Preset preset = static_cast<QGradient::Preset>(presetEnum.value(m_presetIndex)); + QGradient gradient(preset); + if (gradient.type() != QGradient::LinearGradient) + return; + + QLinearGradient *linearGradientPointer = static_cast<QLinearGradient *>(&gradient); + QLineF objectStopsLine(linearGradientPointer->start(), linearGradientPointer->finalStop()); + qreal scaleX = qFuzzyIsNull(objectStopsLine.dx()) ? 1.0 : (0.8 * m_renderer->width() / qAbs(objectStopsLine.dx())); + qreal scaleY = qFuzzyIsNull(objectStopsLine.dy()) ? 1.0 : (0.8 * m_renderer->height() / qAbs(objectStopsLine.dy())); + QLineF logicalStopsLine = QTransform::fromScale(scaleX, scaleY).map(objectStopsLine); + logicalStopsLine.translate(m_renderer->rect().center() - logicalStopsLine.center()); + QPolygonF logicalStops; + logicalStops << logicalStopsLine.p1() << logicalStopsLine.p2(); + + m_linearButton->animateClick(); + m_padSpreadButton->animateClick(); + m_editor->setGradientStops(gradient.stops()); + m_renderer->hoverPoints()->setPoints(logicalStops); + m_renderer->setGradientStops(gradient.stops()); + + updatePresetName(); +} + GradientRenderer::GradientRenderer(QWidget *parent) : ArthurFrame(parent) { |