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Diffstat (limited to 'examples/painting/deform/pathdeform.cpp')
| -rw-r--r-- | examples/painting/deform/pathdeform.cpp | 646 |
1 files changed, 0 insertions, 646 deletions
diff --git a/examples/painting/deform/pathdeform.cpp b/examples/painting/deform/pathdeform.cpp deleted file mode 100644 index d5880fb786..0000000000 --- a/examples/painting/deform/pathdeform.cpp +++ /dev/null @@ -1,646 +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 "pathdeform.h" - -#include <QApplication> -#include <QtDebug> -#include <QMouseEvent> -#include <QTimerEvent> -#include <QLayout> -#include <QLineEdit> -#include <QPainter> -#include <QSlider> -#include <QLabel> -#include <QDesktopWidget> -#include <qmath.h> - -PathDeformControls::PathDeformControls(QWidget *parent, PathDeformRenderer* renderer, bool smallScreen) - : QWidget(parent) -{ - m_renderer = renderer; - - if (smallScreen) - layoutForSmallScreen(); - else - layoutForDesktop(); -} - - -void PathDeformControls::layoutForDesktop() -{ - QGroupBox* mainGroup = new QGroupBox(this); - mainGroup->setTitle(tr("Controls")); - - QGroupBox *radiusGroup = new QGroupBox(mainGroup); - radiusGroup->setTitle(tr("Lens Radius")); - QSlider *radiusSlider = new QSlider(Qt::Horizontal, radiusGroup); - radiusSlider->setRange(15, 150); - radiusSlider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed); - - QGroupBox *deformGroup = new QGroupBox(mainGroup); - deformGroup->setTitle(tr("Deformation")); - QSlider *deformSlider = new QSlider(Qt::Horizontal, deformGroup); - deformSlider->setRange(-100, 100); - deformSlider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed); - - QGroupBox *fontSizeGroup = new QGroupBox(mainGroup); - fontSizeGroup->setTitle(tr("Font Size")); - QSlider *fontSizeSlider = new QSlider(Qt::Horizontal, fontSizeGroup); - fontSizeSlider->setRange(16, 200); - fontSizeSlider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed); - - QGroupBox *textGroup = new QGroupBox(mainGroup); - textGroup->setTitle(tr("Text")); - QLineEdit *textInput = new QLineEdit(textGroup); - - QPushButton *animateButton = new QPushButton(mainGroup); - animateButton->setText(tr("Animated")); - animateButton->setCheckable(true); - - 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); - - - mainGroup->setFixedWidth(180); - - QVBoxLayout *mainGroupLayout = new QVBoxLayout(mainGroup); - mainGroupLayout->addWidget(radiusGroup); - mainGroupLayout->addWidget(deformGroup); - mainGroupLayout->addWidget(fontSizeGroup); - mainGroupLayout->addWidget(textGroup); - mainGroupLayout->addWidget(animateButton); - mainGroupLayout->addStretch(1); -#ifdef QT_OPENGL_SUPPORT - mainGroupLayout->addWidget(enableOpenGLButton); -#endif - mainGroupLayout->addWidget(showSourceButton); - mainGroupLayout->addWidget(whatsThisButton); - - QVBoxLayout *radiusGroupLayout = new QVBoxLayout(radiusGroup); - radiusGroupLayout->addWidget(radiusSlider); - - QVBoxLayout *deformGroupLayout = new QVBoxLayout(deformGroup); - deformGroupLayout->addWidget(deformSlider); - - QVBoxLayout *fontSizeGroupLayout = new QVBoxLayout(fontSizeGroup); - fontSizeGroupLayout->addWidget(fontSizeSlider); - - QVBoxLayout *textGroupLayout = new QVBoxLayout(textGroup); - textGroupLayout->addWidget(textInput); - - QVBoxLayout * mainLayout = new QVBoxLayout(this); - mainLayout->addWidget(mainGroup); - mainLayout->setMargin(0); - - connect(radiusSlider, SIGNAL(valueChanged(int)), m_renderer, SLOT(setRadius(int))); - connect(deformSlider, SIGNAL(valueChanged(int)), m_renderer, SLOT(setIntensity(int))); - connect(fontSizeSlider, SIGNAL(valueChanged(int)), m_renderer, SLOT(setFontSize(int))); - connect(animateButton, SIGNAL(clicked(bool)), m_renderer, SLOT(setAnimated(bool))); -#ifdef QT_OPENGL_SUPPORT - connect(enableOpenGLButton, SIGNAL(clicked(bool)), m_renderer, SLOT(enableOpenGL(bool))); -#endif - - connect(textInput, SIGNAL(textChanged(QString)), m_renderer, SLOT(setText(QString))); - connect(m_renderer, SIGNAL(descriptionEnabledChanged(bool)), - whatsThisButton, SLOT(setChecked(bool))); - connect(whatsThisButton, SIGNAL(clicked(bool)), m_renderer, SLOT(setDescriptionEnabled(bool))); - connect(showSourceButton, SIGNAL(clicked()), m_renderer, SLOT(showSource())); - - animateButton->animateClick(); - deformSlider->setValue(80); - fontSizeSlider->setValue(120); - radiusSlider->setValue(100); - textInput->setText(tr("Qt")); -} - -void PathDeformControls::layoutForSmallScreen() -{ - QGroupBox* mainGroup = new QGroupBox(this); - mainGroup->setTitle(tr("Controls")); - - QLabel *radiusLabel = new QLabel(mainGroup); - radiusLabel->setText(tr("Lens Radius:")); - QSlider *radiusSlider = new QSlider(Qt::Horizontal, mainGroup); - radiusSlider->setRange(15, 150); - radiusSlider->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed); - - QLabel *deformLabel = new QLabel(mainGroup); - deformLabel->setText(tr("Deformation:")); - QSlider *deformSlider = new QSlider(Qt::Horizontal, mainGroup); - deformSlider->setRange(-100, 100); - deformSlider->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed); - - QLabel *fontSizeLabel = new QLabel(mainGroup); - fontSizeLabel->setText(tr("Font Size:")); - QSlider *fontSizeSlider = new QSlider(Qt::Horizontal, mainGroup); - fontSizeSlider->setRange(16, 200); - fontSizeSlider->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed); - - QPushButton *animateButton = new QPushButton(tr("Animated"), mainGroup); - animateButton->setCheckable(true); - -#ifdef QT_OPENGL_SUPPORT - QPushButton *enableOpenGLButton = new QPushButton(mainGroup); - enableOpenGLButton->setText(tr("Use OpenGL")); - enableOpenGLButton->setCheckable(mainGroup); - enableOpenGLButton->setChecked(m_renderer->usesOpenGL()); - if (!QGLFormat::hasOpenGL()) - enableOpenGLButton->hide(); -#endif - - QPushButton *quitButton = new QPushButton(tr("Quit"), mainGroup); - QPushButton *okButton = new QPushButton(tr("OK"), mainGroup); - - - QGridLayout *mainGroupLayout = new QGridLayout(mainGroup); - mainGroupLayout->setMargin(0); - mainGroupLayout->addWidget(radiusLabel, 0, 0, Qt::AlignRight); - mainGroupLayout->addWidget(radiusSlider, 0, 1); - mainGroupLayout->addWidget(deformLabel, 1, 0, Qt::AlignRight); - mainGroupLayout->addWidget(deformSlider, 1, 1); - mainGroupLayout->addWidget(fontSizeLabel, 2, 0, Qt::AlignRight); - mainGroupLayout->addWidget(fontSizeSlider, 2, 1); - mainGroupLayout->addWidget(animateButton, 3,0, 1,2); -#ifdef QT_OPENGL_SUPPORT - mainGroupLayout->addWidget(enableOpenGLButton, 4,0, 1,2); -#endif - - QVBoxLayout *mainLayout = new QVBoxLayout(this); - mainLayout->addWidget(mainGroup); - mainLayout->addStretch(1); - mainLayout->addWidget(okButton); - mainLayout->addWidget(quitButton); - - connect(quitButton, SIGNAL(clicked()), this, SLOT(emitQuitSignal())); - connect(okButton, SIGNAL(clicked()), this, SLOT(emitOkSignal())); - connect(radiusSlider, SIGNAL(valueChanged(int)), m_renderer, SLOT(setRadius(int))); - connect(deformSlider, SIGNAL(valueChanged(int)), m_renderer, SLOT(setIntensity(int))); - connect(fontSizeSlider, SIGNAL(valueChanged(int)), m_renderer, SLOT(setFontSize(int))); - connect(animateButton, SIGNAL(clicked(bool)), m_renderer, SLOT(setAnimated(bool))); -#ifdef QT_OPENGL_SUPPORT - connect(enableOpenGLButton, SIGNAL(clicked(bool)), m_renderer, SLOT(enableOpenGL(bool))); -#endif - - - animateButton->animateClick(); - deformSlider->setValue(80); - fontSizeSlider->setValue(120); - - QRect screen_size = QApplication::desktop()->screenGeometry(); - radiusSlider->setValue(qMin(screen_size.width(), screen_size.height())/5); - - m_renderer->setText(tr("Qt")); -} - - -void PathDeformControls::emitQuitSignal() -{ emit quitPressed(); } - -void PathDeformControls::emitOkSignal() -{ emit okPressed(); } - - -PathDeformWidget::PathDeformWidget(QWidget *parent, bool smallScreen) - : QWidget(parent) -{ - setWindowTitle(tr("Vector Deformation")); - - m_renderer = new PathDeformRenderer(this, smallScreen); - m_renderer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding); - - // Layouts - QHBoxLayout *mainLayout = new QHBoxLayout(this); - mainLayout->addWidget(m_renderer); - - m_controls = new PathDeformControls(0, m_renderer, smallScreen); - m_controls->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Minimum); - - if (!smallScreen) - mainLayout->addWidget(m_controls); - - m_renderer->loadSourceFile(":res/deform/pathdeform.cpp"); - m_renderer->loadDescription(":res/deform/pathdeform.html"); - m_renderer->setDescriptionEnabled(false); - - connect(m_renderer, SIGNAL(clicked()), this, SLOT(showControls())); - connect(m_controls, SIGNAL(okPressed()), this, SLOT(hideControls())); - connect(m_controls, SIGNAL(quitPressed()), QApplication::instance(), SLOT(quit())); -} - - -void PathDeformWidget::showControls() -{ - m_controls->showFullScreen(); -} - -void PathDeformWidget::hideControls() -{ - m_controls->hide(); -} - -void PathDeformWidget::setStyle( QStyle * style ) -{ - QWidget::setStyle(style); - if (m_controls != 0) - { - m_controls->setStyle(style); - - QList<QWidget *> widgets = m_controls->findChildren<QWidget *>(); - foreach (QWidget *w, widgets) - w->setStyle(style); - } -} - -static inline QRect circle_bounds(const QPointF ¢er, qreal radius, qreal compensation) -{ - return QRect(qRound(center.x() - radius - compensation), - qRound(center.y() - radius - compensation), - qRound((radius + compensation) * 2), - qRound((radius + compensation) * 2)); - -} - -const int LENS_EXTENT = 10; - -PathDeformRenderer::PathDeformRenderer(QWidget *widget, bool smallScreen) - : ArthurFrame(widget) -{ - m_radius = 100; - m_pos = QPointF(m_radius, m_radius); - m_direction = QPointF(1, 1); - m_fontSize = 24; - m_animated = true; - m_repaintTimer.start(25, this); - m_repaintTracker.start(); - m_intensity = 100; - m_smallScreen = smallScreen; - -// m_fpsTimer.start(1000, this); -// m_fpsCounter = 0; - - generateLensPixmap(); -} - -void PathDeformRenderer::setText(const QString &text) -{ - m_text = text; - - QFont f("times new roman,utopia"); - f.setStyleStrategy(QFont::ForceOutline); - f.setPointSize(m_fontSize); - f.setStyleHint(QFont::Times); - - QFontMetrics fm(f); - - m_paths.clear(); - m_pathBounds = QRect(); - - QPointF advance(0, 0); - - bool do_quick = true; - for (int i=0; i<text.size(); ++i) { - if (text.at(i).unicode() >= 0x4ff && text.at(i).unicode() <= 0x1e00) { - do_quick = false; - break; - } - } - - if (do_quick) { - for (int i=0; i<text.size(); ++i) { - QPainterPath path; - path.addText(advance, f, text.mid(i, 1)); - m_pathBounds |= path.boundingRect(); - m_paths << path; - advance += QPointF(fm.width(text.mid(i, 1)), 0); - } - } else { - QPainterPath path; - path.addText(advance, f, text); - m_pathBounds |= path.boundingRect(); - m_paths << path; - } - - for (int i=0; i<m_paths.size(); ++i) - m_paths[i] = m_paths[i] * QMatrix(1, 0, 0, 1, -m_pathBounds.x(), -m_pathBounds.y()); - - update(); -} - - -void PathDeformRenderer::generateLensPixmap() -{ - qreal rad = m_radius + LENS_EXTENT; - - QRect bounds = circle_bounds(QPointF(), rad, 0); - - QPainter painter; - - if (preferImage()) { - m_lens_image = QImage(bounds.size(), QImage::Format_ARGB32_Premultiplied); - m_lens_image.fill(0); - painter.begin(&m_lens_image); - } else { - m_lens_pixmap = QPixmap(bounds.size()); - m_lens_pixmap.fill(Qt::transparent); - painter.begin(&m_lens_pixmap); - } - - QRadialGradient gr(rad, rad, rad, 3 * rad / 5, 3 * rad / 5); - gr.setColorAt(0.0, QColor(255, 255, 255, 191)); - gr.setColorAt(0.2, QColor(255, 255, 127, 191)); - gr.setColorAt(0.9, QColor(150, 150, 200, 63)); - gr.setColorAt(0.95, QColor(0, 0, 0, 127)); - gr.setColorAt(1, QColor(0, 0, 0, 0)); - painter.setRenderHint(QPainter::Antialiasing); - painter.setBrush(gr); - painter.setPen(Qt::NoPen); - painter.drawEllipse(0, 0, bounds.width(), bounds.height()); -} - - -void PathDeformRenderer::setAnimated(bool animated) -{ - m_animated = animated; - - if (m_animated) { -// m_fpsTimer.start(1000, this); -// m_fpsCounter = 0; - m_repaintTimer.start(25, this); - m_repaintTracker.start(); - } else { -// m_fpsTimer.stop(); - m_repaintTimer.stop(); - } -} - -void PathDeformRenderer::timerEvent(QTimerEvent *e) -{ - - if (e->timerId() == m_repaintTimer.timerId()) { - - if (QLineF(QPointF(0,0), m_direction).length() > 1) - m_direction *= 0.995; - qreal time = m_repaintTracker.restart(); - - QRect rectBefore = circle_bounds(m_pos, m_radius, m_fontSize); - - qreal dx = m_direction.x(); - qreal dy = m_direction.y(); - if (time > 0) { - dx = dx * time * .1; - dy = dy * time * .1; - } - - m_pos += QPointF(dx, dy); - - - - if (m_pos.x() - m_radius < 0) { - m_direction.setX(-m_direction.x()); - m_pos.setX(m_radius); - } else if (m_pos.x() + m_radius > width()) { - m_direction.setX(-m_direction.x()); - m_pos.setX(width() - m_radius); - } - - if (m_pos.y() - m_radius < 0) { - m_direction.setY(-m_direction.y()); - m_pos.setY(m_radius); - } else if (m_pos.y() + m_radius > height()) { - m_direction.setY(-m_direction.y()); - m_pos.setY(height() - m_radius); - } - -#ifdef QT_OPENGL_SUPPORT - if (usesOpenGL()) { - update(); - } else -#endif - { - QRect rectAfter = circle_bounds(m_pos, m_radius, m_fontSize); - update(rectAfter | rectBefore); - } - } -// else if (e->timerId() == m_fpsTimer.timerId()) { -// printf("fps: %d\n", m_fpsCounter); -// emit frameRate(m_fpsCounter); -// m_fpsCounter = 0; - -// } -} - -void PathDeformRenderer::mousePressEvent(QMouseEvent *e) -{ - setDescriptionEnabled(false); - - m_repaintTimer.stop(); - m_offset = QPointF(); - if (QLineF(m_pos, e->pos()).length() <= m_radius) - m_offset = m_pos - e->pos(); - - m_mousePress = e->pos(); - - // If we're not running in small screen mode, always assume we're dragging - m_mouseDrag = !m_smallScreen; - - mouseMoveEvent(e); -} - -void PathDeformRenderer::mouseReleaseEvent(QMouseEvent *e) -{ - if (e->buttons() == Qt::NoButton && m_animated) { - m_repaintTimer.start(10, this); - m_repaintTracker.start(); - } - - if (!m_mouseDrag && m_smallScreen) - emit clicked(); -} - -void PathDeformRenderer::mouseMoveEvent(QMouseEvent *e) -{ - if (!m_mouseDrag && (QLineF(m_mousePress, e->pos()).length() > 25.0) ) - m_mouseDrag = true; - - if (m_mouseDrag) { - QRect rectBefore = circle_bounds(m_pos, m_radius, m_fontSize); - if (e->type() == QEvent::MouseMove) { - QLineF line(m_pos, e->pos() + m_offset); - line.setLength(line.length() * .1); - QPointF dir(line.dx(), line.dy()); - m_direction = (m_direction + dir) / 2; - } - m_pos = e->pos() + m_offset; -#ifdef QT_OPENGL_SUPPORT - if (usesOpenGL()) { - update(); - } else -#endif - { - QRect rectAfter = circle_bounds(m_pos, m_radius, m_fontSize); - update(rectBefore | rectAfter); - } - } -} - -QPainterPath PathDeformRenderer::lensDeform(const QPainterPath &source, const QPointF &offset) -{ - QPainterPath path; - path.addPath(source); - - qreal flip = m_intensity / qreal(100); - - for (int i=0; i<path.elementCount(); ++i) { - const QPainterPath::Element &e = path.elementAt(i); - - qreal x = e.x + offset.x(); - qreal y = e.y + offset.y(); - - qreal dx = x - m_pos.x(); - qreal dy = y - m_pos.y(); - qreal len = m_radius - qSqrt(dx * dx + dy * dy); - - if (len > 0) { - path.setElementPositionAt(i, - x + flip * dx * len / m_radius, - y + flip * dy * len / m_radius); - } else { - path.setElementPositionAt(i, x, y); - } - - } - - return path; -} - - -void PathDeformRenderer::paint(QPainter *painter) -{ - int pad_x = 5; - int pad_y = 5; - - int skip_x = qRound(m_pathBounds.width() + pad_x + m_fontSize/2); - int skip_y = qRound(m_pathBounds.height() + pad_y); - - painter->setPen(Qt::NoPen); - painter->setBrush(Qt::black); - - QRectF clip(painter->clipPath().boundingRect()); - - int overlap = pad_x / 2; - - for (int start_y=0; start_y < height(); start_y += skip_y) { - - if (start_y > clip.bottom()) - break; - - int start_x = -overlap; - for (; start_x < width(); start_x += skip_x) { - - if (start_y + skip_y >= clip.top() && - start_x + skip_x >= clip.left() && - start_x <= clip.right()) { - for (int i=0; i<m_paths.size(); ++i) { - QPainterPath path = lensDeform(m_paths[i], QPointF(start_x, start_y)); - painter->drawPath(path); - } - } - } - overlap = skip_x - (start_x - width()); - - } - - if (preferImage()) { - painter->drawImage(m_pos - QPointF(m_radius + LENS_EXTENT, m_radius + LENS_EXTENT), - m_lens_image); - } else { - painter->drawPixmap(m_pos - QPointF(m_radius + LENS_EXTENT, m_radius + LENS_EXTENT), - m_lens_pixmap); - } -} - - - -void PathDeformRenderer::setRadius(int radius) -{ - qreal max = qMax(m_radius, (qreal)radius); - m_radius = radius; - generateLensPixmap(); - if (!m_animated || m_radius < max) { -#ifdef QT_OPENGL_SUPPORT - if (usesOpenGL()) { - update(); - } else -#endif - { - update(circle_bounds(m_pos, max, m_fontSize)); - } - } -} - -void PathDeformRenderer::setIntensity(int intensity) -{ - m_intensity = intensity; - if (!m_animated) { -#ifdef QT_OPENGL_SUPPORT - if (usesOpenGL()) { - update(); - } else -#endif - { - update(circle_bounds(m_pos, m_radius, m_fontSize)); - } - } -} |