f9f395c28b
Updated version of LGPL and FDL licenseheaders. Apply release phase licenseheaders for all source files. Reviewed-by: Trust Me
648 lines
20 KiB
C++
648 lines
20 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
|
|
** All rights reserved.
|
|
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
**
|
|
** 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);
|
|
QApplication::syncX();
|
|
}
|
|
}
|
|
// 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));
|
|
}
|
|
}
|
|
}
|