From 806dda08d685bc5f9ed71dfe8b61f21848d48066 Mon Sep 17 00:00:00 2001 From: Gabriel de Dietrich Date: Fri, 17 Aug 2012 13:23:19 +0200 Subject: Moving .qdoc files under examples/widgets/doc Updated those .qdoc files to refer to the new relative examples emplacement. Images and snippets to be moved later. Also grouped all widgets related examples under widgets. Change-Id: Ib29696e2d8948524537f53e8dda88f9ee26a597f Reviewed-by: J-P Nurmi --- examples/painting/gradients/gradients.cpp | 516 ----------------------------- examples/painting/gradients/gradients.h | 170 ---------- examples/painting/gradients/gradients.html | 31 -- examples/painting/gradients/gradients.pro | 20 -- examples/painting/gradients/gradients.qrc | 6 - examples/painting/gradients/main.cpp | 63 ---- 6 files changed, 806 deletions(-) delete mode 100644 examples/painting/gradients/gradients.cpp delete mode 100644 examples/painting/gradients/gradients.h delete mode 100644 examples/painting/gradients/gradients.html delete mode 100644 examples/painting/gradients/gradients.pro delete mode 100644 examples/painting/gradients/gradients.qrc delete mode 100644 examples/painting/gradients/main.cpp (limited to 'examples/painting/gradients') diff --git a/examples/painting/gradients/gradients.cpp b/examples/painting/gradients/gradients.cpp deleted file mode 100644 index 9dad51a8e4..0000000000 --- a/examples/painting/gradients/gradients.cpp +++ /dev/null @@ -1,516 +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. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "gradients.h" -#include "hoverpoints.h" - -ShadeWidget::ShadeWidget(ShadeType type, QWidget *parent) - : QWidget(parent), m_shade_type(type), m_alpha_gradient(QLinearGradient(0, 0, 0, 0)) -{ - - // Checkers background - if (m_shade_type == ARGBShade) { - QPixmap pm(20, 20); - QPainter pmp(&pm); - pmp.fillRect(0, 0, 10, 10, Qt::lightGray); - pmp.fillRect(10, 10, 10, 10, Qt::lightGray); - pmp.fillRect(0, 10, 10, 10, Qt::darkGray); - pmp.fillRect(10, 0, 10, 10, Qt::darkGray); - pmp.end(); - QPalette pal = palette(); - pal.setBrush(backgroundRole(), QBrush(pm)); - setAutoFillBackground(true); - setPalette(pal); - - } else { - setAttribute(Qt::WA_NoBackground); - - } - - QPolygonF points; - points << QPointF(0, sizeHint().height()) - << QPointF(sizeHint().width(), 0); - - m_hoverPoints = new HoverPoints(this, HoverPoints::CircleShape); -// m_hoverPoints->setConnectionType(HoverPoints::LineConnection); - m_hoverPoints->setPoints(points); - m_hoverPoints->setPointLock(0, HoverPoints::LockToLeft); - m_hoverPoints->setPointLock(1, HoverPoints::LockToRight); - m_hoverPoints->setSortType(HoverPoints::XSort); - - setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed); - - connect(m_hoverPoints, SIGNAL(pointsChanged(QPolygonF)), this, SIGNAL(colorsChanged())); -} - - -QPolygonF ShadeWidget::points() const -{ - return m_hoverPoints->points(); -} - - -uint ShadeWidget::colorAt(int x) -{ - generateShade(); - - QPolygonF pts = m_hoverPoints->points(); - for (int i=1; i < pts.size(); ++i) { - if (pts.at(i-1).x() <= x && pts.at(i).x() >= x) { - QLineF l(pts.at(i-1), pts.at(i)); - l.setLength(l.length() * ((x - l.x1()) / l.dx())); - return m_shade.pixel(qRound(qMin(l.x2(), (qreal(m_shade.width() - 1)))), - qRound(qMin(l.y2(), qreal(m_shade.height() - 1)))); - } - } - return 0; -} - - -void ShadeWidget::setGradientStops(const QGradientStops &stops) -{ - if (m_shade_type == ARGBShade) { - m_alpha_gradient = QLinearGradient(0, 0, width(), 0); - - for (int i=0; isetSpacing(1); - vbox->setMargin(1); - - m_red_shade = new ShadeWidget(ShadeWidget::RedShade, this); - m_green_shade = new ShadeWidget(ShadeWidget::GreenShade, this); - m_blue_shade = new ShadeWidget(ShadeWidget::BlueShade, this); - m_alpha_shade = new ShadeWidget(ShadeWidget::ARGBShade, this); - - vbox->addWidget(m_red_shade); - vbox->addWidget(m_green_shade); - vbox->addWidget(m_blue_shade); - vbox->addWidget(m_alpha_shade); - - connect(m_red_shade, SIGNAL(colorsChanged()), this, SLOT(pointsUpdated())); - connect(m_green_shade, SIGNAL(colorsChanged()), this, SLOT(pointsUpdated())); - connect(m_blue_shade, SIGNAL(colorsChanged()), this, SLOT(pointsUpdated())); - connect(m_alpha_shade, SIGNAL(colorsChanged()), this, SLOT(pointsUpdated())); -} - - -inline static bool x_less_than(const QPointF &p1, const QPointF &p2) -{ - return p1.x() < p2.x(); -} - - -void GradientEditor::pointsUpdated() -{ - qreal w = m_alpha_shade->width(); - - QGradientStops stops; - - QPolygonF points; - - points += m_red_shade->points(); - points += m_green_shade->points(); - points += m_blue_shade->points(); - points += m_alpha_shade->points(); - - qSort(points.begin(), points.end(), x_less_than); - - for (int i=0; icolorAt(int(x))) >> 16, - (0x0000ff00 & m_green_shade->colorAt(int(x))) >> 8, - (0x000000ff & m_blue_shade->colorAt(int(x))), - (0xff000000 & m_alpha_shade->colorAt(int(x))) >> 24); - - if (x / w > 1) - return; - - stops << QGradientStop(x / w, color); - } - - m_alpha_shade->setGradientStops(stops); - - emit gradientStopsChanged(stops); -} - - -static void set_shade_points(const QPolygonF &points, ShadeWidget *shade) -{ - shade->hoverPoints()->setPoints(points); - shade->hoverPoints()->setPointLock(0, HoverPoints::LockToLeft); - shade->hoverPoints()->setPointLock(points.size() - 1, HoverPoints::LockToRight); - shade->update(); -} - -void GradientEditor::setGradientStops(const QGradientStops &stops) -{ - QPolygonF pts_red, pts_green, pts_blue, pts_alpha; - - qreal h_red = m_red_shade->height(); - qreal h_green = m_green_shade->height(); - qreal h_blue = m_blue_shade->height(); - qreal h_alpha = m_alpha_shade->height(); - - for (int i=0; iwidth(), h_red - qRed(color) * h_red / 255); - pts_green << QPointF(pos * m_green_shade->width(), h_green - qGreen(color) * h_green / 255); - pts_blue << QPointF(pos * m_blue_shade->width(), h_blue - qBlue(color) * h_blue / 255); - pts_alpha << QPointF(pos * m_alpha_shade->width(), h_alpha - qAlpha(color) * h_alpha / 255); - } - - set_shade_points(pts_red, m_red_shade); - set_shade_points(pts_green, m_green_shade); - set_shade_points(pts_blue, m_blue_shade); - set_shade_points(pts_alpha, m_alpha_shade); - -} - -GradientWidget::GradientWidget(QWidget *parent) - : QWidget(parent) -{ - setWindowTitle(tr("Gradients")); - - m_renderer = new GradientRenderer(this); - - QGroupBox *mainGroup = new QGroupBox(this); - mainGroup->setTitle(tr("Gradients")); - - QGroupBox *editorGroup = new QGroupBox(mainGroup); - editorGroup->setTitle(tr("Color Editor")); - m_editor = new GradientEditor(editorGroup); - - QGroupBox *typeGroup = new QGroupBox(mainGroup); - typeGroup->setTitle(tr("Gradient Type")); - m_linearButton = new QRadioButton(tr("Linear Gradient"), typeGroup); - m_radialButton = new QRadioButton(tr("Radial Gradient"), typeGroup); - m_conicalButton = new QRadioButton(tr("Conical Gradient"), typeGroup); - - QGroupBox *spreadGroup = new QGroupBox(mainGroup); - spreadGroup->setTitle(tr("Spread Method")); - m_padSpreadButton = new QRadioButton(tr("Pad Spread"), spreadGroup); - m_reflectSpreadButton = new QRadioButton(tr("Reflect Spread"), spreadGroup); - m_repeatSpreadButton = new QRadioButton(tr("Repeat Spread"), spreadGroup); - - QGroupBox *defaultsGroup = new QGroupBox(mainGroup); - defaultsGroup->setTitle(tr("Defaults")); - QPushButton *default1Button = new QPushButton(tr("1"), defaultsGroup); - QPushButton *default2Button = new QPushButton(tr("2"), defaultsGroup); - QPushButton *default3Button = new QPushButton(tr("3"), defaultsGroup); - QPushButton *default4Button = new QPushButton(tr("Reset"), editorGroup); - - QPushButton *showSourceButton = new QPushButton(mainGroup); - showSourceButton->setText(tr("Show Source")); -#ifdef QT_OPENGL_SUPPORT - 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?")); - whatsThisButton->setCheckable(true); - - // Layouts - QHBoxLayout *mainLayout = new QHBoxLayout(this); - mainLayout->addWidget(m_renderer); - mainLayout->addWidget(mainGroup); - - mainGroup->setFixedWidth(180); - QVBoxLayout *mainGroupLayout = new QVBoxLayout(mainGroup); - mainGroupLayout->addWidget(editorGroup); - mainGroupLayout->addWidget(typeGroup); - mainGroupLayout->addWidget(spreadGroup); - mainGroupLayout->addWidget(defaultsGroup); - mainGroupLayout->addStretch(1); - mainGroupLayout->addWidget(showSourceButton); -#ifdef QT_OPENGL_SUPPORT - mainGroupLayout->addWidget(enableOpenGLButton); -#endif - mainGroupLayout->addWidget(whatsThisButton); - - QVBoxLayout *editorGroupLayout = new QVBoxLayout(editorGroup); - editorGroupLayout->addWidget(m_editor); - - QVBoxLayout *typeGroupLayout = new QVBoxLayout(typeGroup); - typeGroupLayout->addWidget(m_linearButton); - typeGroupLayout->addWidget(m_radialButton); - typeGroupLayout->addWidget(m_conicalButton); - - QVBoxLayout *spreadGroupLayout = new QVBoxLayout(spreadGroup); - spreadGroupLayout->addWidget(m_padSpreadButton); - spreadGroupLayout->addWidget(m_repeatSpreadButton); - spreadGroupLayout->addWidget(m_reflectSpreadButton); - - QHBoxLayout *defaultsGroupLayout = new QHBoxLayout(defaultsGroup); - defaultsGroupLayout->addWidget(default1Button); - defaultsGroupLayout->addWidget(default2Button); - defaultsGroupLayout->addWidget(default3Button); - editorGroupLayout->addWidget(default4Button); - - connect(m_editor, SIGNAL(gradientStopsChanged(QGradientStops)), - m_renderer, SLOT(setGradientStops(QGradientStops))); - - connect(m_linearButton, SIGNAL(clicked()), m_renderer, SLOT(setLinearGradient())); - connect(m_radialButton, SIGNAL(clicked()), m_renderer, SLOT(setRadialGradient())); - connect(m_conicalButton, SIGNAL(clicked()), m_renderer, SLOT(setConicalGradient())); - - connect(m_padSpreadButton, SIGNAL(clicked()), m_renderer, SLOT(setPadSpread())); - connect(m_reflectSpreadButton, SIGNAL(clicked()), m_renderer, SLOT(setReflectSpread())); - connect(m_repeatSpreadButton, SIGNAL(clicked()), m_renderer, SLOT(setRepeatSpread())); - - connect(default1Button, SIGNAL(clicked()), this, SLOT(setDefault1())); - connect(default2Button, SIGNAL(clicked()), this, SLOT(setDefault2())); - connect(default3Button, SIGNAL(clicked()), this, SLOT(setDefault3())); - connect(default4Button, SIGNAL(clicked()), this, SLOT(setDefault4())); - - connect(showSourceButton, SIGNAL(clicked()), m_renderer, SLOT(showSource())); -#ifdef QT_OPENGL_SUPPORT - connect(enableOpenGLButton, SIGNAL(clicked(bool)), m_renderer, SLOT(enableOpenGL(bool))); -#endif - connect(whatsThisButton, SIGNAL(clicked(bool)), m_renderer, SLOT(setDescriptionEnabled(bool))); - connect(whatsThisButton, SIGNAL(clicked(bool)), - m_renderer->hoverPoints(), SLOT(setDisabled(bool))); - connect(m_renderer, SIGNAL(descriptionEnabledChanged(bool)), - whatsThisButton, SLOT(setChecked(bool))); - connect(m_renderer, SIGNAL(descriptionEnabledChanged(bool)), - m_renderer->hoverPoints(), SLOT(setDisabled(bool))); - - m_renderer->loadSourceFile(":res/gradients/gradients.cpp"); - m_renderer->loadDescription(":res/gradients/gradients.html"); - - QTimer::singleShot(50, this, SLOT(setDefault1())); -} - -void GradientWidget::setDefault(int config) -{ - QGradientStops stops; - QPolygonF points; - switch (config) { - case 1: - stops << QGradientStop(0.00, QColor::fromRgba(0)); - stops << QGradientStop(0.04, QColor::fromRgba(0xff131360)); - stops << QGradientStop(0.08, QColor::fromRgba(0xff202ccc)); - stops << QGradientStop(0.42, QColor::fromRgba(0xff93d3f9)); - stops << QGradientStop(0.51, QColor::fromRgba(0xffb3e6ff)); - stops << QGradientStop(0.73, QColor::fromRgba(0xffffffec)); - stops << QGradientStop(0.92, QColor::fromRgba(0xff5353d9)); - stops << QGradientStop(0.96, QColor::fromRgba(0xff262666)); - stops << QGradientStop(1.00, QColor::fromRgba(0)); - m_linearButton->animateClick(); - m_repeatSpreadButton->animateClick(); - break; - - case 2: - stops << QGradientStop(0.00, QColor::fromRgba(0xffffffff)); - stops << QGradientStop(0.11, QColor::fromRgba(0xfff9ffa0)); - stops << QGradientStop(0.13, QColor::fromRgba(0xfff9ff99)); - stops << QGradientStop(0.14, QColor::fromRgba(0xfff3ff86)); - stops << QGradientStop(0.49, QColor::fromRgba(0xff93b353)); - stops << QGradientStop(0.87, QColor::fromRgba(0xff264619)); - stops << QGradientStop(0.96, QColor::fromRgba(0xff0c1306)); - stops << QGradientStop(1.00, QColor::fromRgba(0)); - m_radialButton->animateClick(); - m_padSpreadButton->animateClick(); - break; - - case 3: - stops << QGradientStop(0.00, QColor::fromRgba(0)); - stops << QGradientStop(0.10, QColor::fromRgba(0xffe0cc73)); - stops << QGradientStop(0.17, QColor::fromRgba(0xffc6a006)); - stops << QGradientStop(0.46, QColor::fromRgba(0xff600659)); - stops << QGradientStop(0.72, QColor::fromRgba(0xff0680ac)); - stops << QGradientStop(0.92, QColor::fromRgba(0xffb9d9e6)); - stops << QGradientStop(1.00, QColor::fromRgba(0)); - m_conicalButton->animateClick(); - m_padSpreadButton->animateClick(); - break; - - case 4: - stops << QGradientStop(0.00, QColor::fromRgba(0xff000000)); - stops << QGradientStop(1.00, QColor::fromRgba(0xffffffff)); - break; - - default: - qWarning("bad default: %d\n", config); - break; - } - - QPolygonF pts; - int h_off = m_renderer->width() / 10; - int v_off = m_renderer->height() / 8; - pts << QPointF(m_renderer->width() / 2, m_renderer->height() / 2) - << QPointF(m_renderer->width() / 2 - h_off, m_renderer->height() / 2 - v_off); - - m_editor->setGradientStops(stops); - m_renderer->hoverPoints()->setPoints(pts); - m_renderer->setGradientStops(stops); -} - - -GradientRenderer::GradientRenderer(QWidget *parent) - : ArthurFrame(parent) -{ - m_hoverPoints = new HoverPoints(this, HoverPoints::CircleShape); - m_hoverPoints->setPointSize(QSize(20, 20)); - m_hoverPoints->setConnectionType(HoverPoints::NoConnection); - m_hoverPoints->setEditable(false); - - QVector points; - points << QPointF(100, 100) << QPointF(200, 200); - m_hoverPoints->setPoints(points); - - m_spread = QGradient::PadSpread; - m_gradientType = Qt::LinearGradientPattern; -} - -void GradientRenderer::setGradientStops(const QGradientStops &stops) -{ - m_stops = stops; - update(); -} - - -void GradientRenderer::mousePressEvent(QMouseEvent *) -{ - setDescriptionEnabled(false); -} - -void GradientRenderer::paint(QPainter *p) -{ - QPolygonF pts = m_hoverPoints->points(); - - QGradient g; - - if (m_gradientType == Qt::LinearGradientPattern) { - g = QLinearGradient(pts.at(0), pts.at(1)); - - } else if (m_gradientType == Qt::RadialGradientPattern) { - g = QRadialGradient(pts.at(0), qMin(width(), height()) / 3.0, pts.at(1)); - - } else { - QLineF l(pts.at(0), pts.at(1)); - qreal angle = l.angle(QLineF(0, 0, 1, 0)); - if (l.dy() > 0) - angle = 360 - angle; - g = QConicalGradient(pts.at(0), angle); - } - - for (int i=0; isetBrush(g); - p->setPen(Qt::NoPen); - - p->drawRect(rect()); - -} diff --git a/examples/painting/gradients/gradients.h b/examples/painting/gradients/gradients.h deleted file mode 100644 index 0fed2de82a..0000000000 --- a/examples/painting/gradients/gradients.h +++ /dev/null @@ -1,170 +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. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef GRADIENTS_H -#define GRADIENTS_H - -#include "arthurwidgets.h" - -#include - -class HoverPoints; - - -class ShadeWidget : public QWidget -{ - Q_OBJECT -public: - enum ShadeType { - RedShade, - GreenShade, - BlueShade, - ARGBShade - }; - - ShadeWidget(ShadeType type, QWidget *parent); - - void setGradientStops(const QGradientStops &stops); - - void paintEvent(QPaintEvent *e); - - QSize sizeHint() const { return QSize(150, 40); } - QPolygonF points() const; - - HoverPoints *hoverPoints() const { return m_hoverPoints; } - - uint colorAt(int x); - -signals: - void colorsChanged(); - -private: - void generateShade(); - - ShadeType m_shade_type; - QImage m_shade; - HoverPoints *m_hoverPoints; - QLinearGradient m_alpha_gradient; -}; - -class GradientEditor : public QWidget -{ - Q_OBJECT -public: - GradientEditor(QWidget *parent); - - void setGradientStops(const QGradientStops &stops); - -public slots: - void pointsUpdated(); - -signals: - void gradientStopsChanged(const QGradientStops &stops); - -private: - ShadeWidget *m_red_shade; - ShadeWidget *m_green_shade; - ShadeWidget *m_blue_shade; - ShadeWidget *m_alpha_shade; -}; - - -class GradientRenderer : public ArthurFrame -{ - Q_OBJECT -public: - GradientRenderer(QWidget *parent); - void paint(QPainter *p); - - QSize sizeHint() const { return QSize(400, 400); } - - HoverPoints *hoverPoints() const { return m_hoverPoints; } - void mousePressEvent(QMouseEvent *e); - -public slots: - void setGradientStops(const QGradientStops &stops); - - void setPadSpread() { m_spread = QGradient::PadSpread; update(); } - void setRepeatSpread() { m_spread = QGradient::RepeatSpread; update(); } - void setReflectSpread() { m_spread = QGradient::ReflectSpread; update(); } - - void setLinearGradient() { m_gradientType = Qt::LinearGradientPattern; update(); } - void setRadialGradient() { m_gradientType = Qt::RadialGradientPattern; update(); } - void setConicalGradient() { m_gradientType = Qt::ConicalGradientPattern; update(); } - - -private: - QGradientStops m_stops; - HoverPoints *m_hoverPoints; - - QGradient::Spread m_spread; - Qt::BrushStyle m_gradientType; -}; - - -class GradientWidget : public QWidget -{ - Q_OBJECT -public: - GradientWidget(QWidget *parent); - -public slots: - void setDefault1() { setDefault(1); } - void setDefault2() { setDefault(2); } - void setDefault3() { setDefault(3); } - void setDefault4() { setDefault(4); } - -private: - void setDefault(int i); - - GradientRenderer *m_renderer; - GradientEditor *m_editor; - - QRadioButton *m_linearButton; - QRadioButton *m_radialButton; - QRadioButton *m_conicalButton; - QRadioButton *m_padSpreadButton; - QRadioButton *m_reflectSpreadButton; - QRadioButton *m_repeatSpreadButton; - -}; - -#endif // GRADIENTS_H diff --git a/examples/painting/gradients/gradients.html b/examples/painting/gradients/gradients.html deleted file mode 100644 index 1ea2c0ed6c..0000000000 --- a/examples/painting/gradients/gradients.html +++ /dev/null @@ -1,31 +0,0 @@ - -
-

Gradients

-
- -

In this demo we show the various types of gradients that can -be used in Qt.

- -

There are three types of gradients: - -

    -
  • Linear gradients interpolate colors between start and end - points.
    • -
  • Radial gradients interpolate colors between a focal point and the - points on a circle surrounding it.
    • -
  • Conical gradients interpolate colors around a center point.
    • -
- -

- -

The panel on the right contains a color table editor that defines -the colors in the gradient. The three topmost controls determine the red, -green and blue components while the last defines the alpha of the -gradient. You can move points, and add new ones, by clicking with the left -mouse button, and remove points by clicking with the right button.

- -

There are three default configurations available at the bottom of -the page that are provided as suggestions on how a color table could be -configured.

- - diff --git a/examples/painting/gradients/gradients.pro b/examples/painting/gradients/gradients.pro deleted file mode 100644 index 4362d283ee..0000000000 --- a/examples/painting/gradients/gradients.pro +++ /dev/null @@ -1,20 +0,0 @@ -SOURCES += main.cpp gradients.cpp -HEADERS += gradients.h - -SHARED_FOLDER = ../shared - -include($$SHARED_FOLDER/shared.pri) - -RESOURCES += gradients.qrc -contains(QT_CONFIG, opengl) { - DEFINES += QT_OPENGL_SUPPORT - QT += opengl -} -QT += widgets - -# install -target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/painting/gradients -sources.files = $$SOURCES $$HEADERS $$RESOURCES *.pro *.html -sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/painting/gradients -INSTALLS += target sources - diff --git a/examples/painting/gradients/gradients.qrc b/examples/painting/gradients/gradients.qrc deleted file mode 100644 index fb971eb17b..0000000000 --- a/examples/painting/gradients/gradients.qrc +++ /dev/null @@ -1,6 +0,0 @@ - - - gradients.cpp - gradients.html - - diff --git a/examples/painting/gradients/main.cpp b/examples/painting/gradients/main.cpp deleted file mode 100644 index eaf8bdc333..0000000000 --- a/examples/painting/gradients/main.cpp +++ /dev/null @@ -1,63 +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. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "gradients.h" - -#include - -int main(int argc, char **argv) -{ - Q_INIT_RESOURCE(gradients); - - QApplication app(argc, argv); - - GradientWidget gradientWidget(0); - QStyle *arthurStyle = new ArthurStyle(); - gradientWidget.setStyle(arthurStyle); - QList widgets = gradientWidget.findChildren(); - foreach (QWidget *w, widgets) { - w->setStyle(arthurStyle); - w->setAttribute(Qt::WA_AcceptTouchEvents); - } - gradientWidget.show(); - - return app.exec(); -} -- cgit v1.2.3