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This commit is contained in:
Abhijit Kundu
2014-12-01 13:41:34 -05:00
commit 2b9f84b72b
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examples/canvas_variant/CMakeLists.txt Normal file
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# Tell CMake to run moc when necessary:
set(CMAKE_AUTOMOC ON)
# As moc files are generated in the binary dir, tell CMake
# to always look for includes there:
set(CMAKE_INCLUDE_CURRENT_DIR ON)
SET(example_name canvas_variant)
SET(KIT_SRCS
main.cpp
mainwindow.cpp
mainwindow.h
qtcanvas.cpp
qtcanvas.h
)
ADD_EXECUTABLE(${example_name} ${KIT_SRCS})
TARGET_LINK_LIBRARIES(${example_name} ${PROJECT_NAME} ${QT_TARGETS})

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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of a Qt Solutions component.
**
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
****************************************************************************/
/*!
\page qtpropertybrowser-example-canvas_variant.html
\title Variant Based Canvas Example
This example demonstrates how to use the QtVariantPropertyManager
convenience class for all property types. In this approach only
one instance of the property manager class is used, and the
developer interfaces with a dynamic API based on QVariant.
\image canvas_variant.png
The example presents a canvas filled up with items of different
types, and a tree property browser which displays the currently
selected item's properties.
All item types has a few common properties like "Position X", "Position Y"
or "Position Z", but each type also adds its own type-specific
properties (e.g. the text items provide "Text" and "Font"
properties, and the line items provide a "Vector" property).
The source files can be found in examples/canvas_variant directory
of the package.
\section1 Third party copyright notice
The canvas class used in this example contains third party code
with the following copyright notice:
\legalese
\code
Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
\endcode
\endlegalese
*/

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examples/canvas_variant/main.cpp Normal file
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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of a Qt Solutions component.
**
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
****************************************************************************/
#include <QApplication>
#include "mainwindow.h"
int main(int argc, char **argv)
{
QApplication app(argc, argv);
MainWindow mw;
mw.show();
return app.exec();
}

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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of a Qt Solutions component.
**
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
****************************************************************************/
#include "mainwindow.h"
#include "qtvariantproperty.h"
#include "qttreepropertybrowser.h"
#include <QMatrix>
#include <QMouseEvent>
#include <QMenuBar>
#include <QMenu>
#include <QAction>
#include <QDockWidget>
void CanvasView::contentsMousePressEvent(QMouseEvent* event)
{
handleMouseClickEvent(event);
}
void CanvasView::contentsMouseDoubleClickEvent(QMouseEvent* event)
{
handleMouseClickEvent(event);
}
void CanvasView::handleMouseClickEvent(QMouseEvent* event)
{
QPoint p = inverseWorldMatrix().map(event->pos());
QtCanvasItemList l = canvas()->collisions(p);
moving = 0;
if (!l.isEmpty())
moving = l.first();
moving_start = p;
emit itemClicked(moving);
}
void CanvasView::contentsMouseMoveEvent(QMouseEvent* event)
{
if (moving) {
QPoint p = inverseWorldMatrix().map(event->pos());
moving->moveBy(p.x() - moving_start.x(), p.y() - moving_start.y());
moving_start = p;
canvas()->update();
emit itemMoved(moving);
}
}
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
QMenu *editMenu = menuBar()->addMenu(tr("Edit"));
QMenu *newObjectMenu = editMenu->addMenu(tr("New Object"));
QAction *newRectangleAction = new QAction(tr("Rectangle"), this);
connect(newRectangleAction, SIGNAL(triggered(bool)), this, SLOT(newRectangle()));
newObjectMenu->addAction(newRectangleAction);
QAction *newLineAction = new QAction(tr("Line"), this);
connect(newLineAction, SIGNAL(triggered(bool)), this, SLOT(newLine()));
newObjectMenu->addAction(newLineAction);
QAction *newEllipseAction = new QAction(tr("Ellipse"), this);
connect(newEllipseAction, SIGNAL(triggered(bool)), this, SLOT(newEllipse()));
newObjectMenu->addAction(newEllipseAction);
QAction *newTextAction = new QAction(tr("Text"), this);
connect(newTextAction, SIGNAL(triggered(bool)), this, SLOT(newText()));
newObjectMenu->addAction(newTextAction);
deleteAction = new QAction(tr("Delete Object"), this);
connect(deleteAction, SIGNAL(triggered(bool)), this, SLOT(deleteObject()));
editMenu->addAction(deleteAction);
QAction *clearAction = new QAction(tr("Clear All"), this);
connect(clearAction, SIGNAL(triggered(bool)), this, SLOT(clearAll()));
editMenu->addAction(clearAction);
QAction *fillAction = new QAction(tr("Fill View"), this);
connect(fillAction, SIGNAL(triggered(bool)), this, SLOT(fillView()));
editMenu->addAction(fillAction);
variantManager = new QtVariantPropertyManager(this);
connect(variantManager, SIGNAL(valueChanged(QtProperty *, const QVariant &)),
this, SLOT(valueChanged(QtProperty *, const QVariant &)));
QtVariantEditorFactory *variantFactory = new QtVariantEditorFactory(this);
canvas = new QtCanvas(800, 600);
canvasView = new CanvasView(canvas, this);
setCentralWidget(canvasView);
QDockWidget *dock = new QDockWidget(this);
addDockWidget(Qt::RightDockWidgetArea, dock);
propertyEditor = new QtTreePropertyBrowser(dock);
propertyEditor->setFactoryForManager(variantManager, variantFactory);
dock->setWidget(propertyEditor);
currentItem = 0;
connect(canvasView, SIGNAL(itemClicked(QtCanvasItem *)),
this, SLOT(itemClicked(QtCanvasItem *)));
connect(canvasView, SIGNAL(itemMoved(QtCanvasItem *)),
this, SLOT(itemMoved(QtCanvasItem *)));
fillView();
itemClicked(0);
}
void MainWindow::newRectangle()
{
QtCanvasItem *item = addRectangle();
canvas->update();
itemClicked(item);
}
void MainWindow::newEllipse()
{
QtCanvasItem *item = addEllipse();
canvas->update();
itemClicked(item);
}
void MainWindow::newLine()
{
QtCanvasItem *item = addLine();
canvas->update();
itemClicked(item);
}
void MainWindow::newText()
{
QtCanvasItem *item = addText();
canvas->update();
itemClicked(item);
}
void MainWindow::deleteObject()
{
if (!currentItem)
return;
delete currentItem;
itemClicked(0);
canvas->update();
}
void MainWindow::clearAll()
{
QtCanvasItemList list = canvas->allItems();
qDeleteAll(list);
itemClicked(0);
canvas->update();
}
void MainWindow::fillView()
{
for (int i = 0; i < 10; i++) {
addRectangle();
addEllipse();
addLine();
addText();
}
canvas->update();
}
QtCanvasItem *MainWindow::addRectangle()
{
QtCanvasPolygonalItem *item = new QtCanvasRectangle(rand() % canvas->width(),
rand() % canvas->height(), 50, 50, canvas);
int z = rand() % 256;
item->setBrush(QColor(rand() % 32 * 8, rand() % 32 * 8, rand() % 32 * 8));
item->setPen(QPen(QColor(rand() % 32*8, rand() % 32*8, rand() % 32*8), 4));
item->setZ(z);
item->show();
return item;
}
QtCanvasItem *MainWindow::addEllipse()
{
QtCanvasPolygonalItem *item = new QtCanvasEllipse(50, 50, canvas);
item->setBrush(QColor(rand() % 32 * 8, rand() % 32 * 8, rand() % 32 * 8));
item->move(rand() % canvas->width(), rand() % canvas->height());
item->setZ(rand() % 256);
item->show();
return item;
}
QtCanvasItem *MainWindow::addLine()
{
QtCanvasLine *item = new QtCanvasLine(canvas);
item->setPoints(0, 0, rand() % canvas->width() - canvas->width() / 2,
rand() % canvas->height() - canvas->height() / 2);
item->move(rand() % canvas->width(), rand() % canvas->height());
item->setPen(QPen(QColor(rand() % 32*8, rand() % 32*8, rand() % 32*8), 6));
item->setZ(rand() % 256);
item->show();
return item;
}
QtCanvasItem *MainWindow::addText()
{
QtCanvasText *item = new QtCanvasText(canvas);
item->setText(tr("Text"));
item->setColor(QColor(rand() % 32*8, rand() % 32*8, rand() % 32*8));
item->move(rand() % canvas->width(), rand() % canvas->height());
item->setZ(rand() % 256);
item->show();
return item;
}
void MainWindow::itemMoved(QtCanvasItem *item)
{
if (item != currentItem)
return;
variantManager->setValue(idToProperty[QLatin1String("xpos")], item->x());
variantManager->setValue(idToProperty[QLatin1String("ypos")], item->y());
variantManager->setValue(idToProperty[QLatin1String("zpos")], item->z());
}
void MainWindow::updateExpandState()
{
QList<QtBrowserItem *> list = propertyEditor->topLevelItems();
QListIterator<QtBrowserItem *> it(list);
while (it.hasNext()) {
QtBrowserItem *item = it.next();
QtProperty *prop = item->property();
idToExpanded[propertyToId[prop]] = propertyEditor->isExpanded(item);
}
}
void MainWindow::itemClicked(QtCanvasItem *item)
{
updateExpandState();
QMap<QtProperty *, QString>::ConstIterator itProp = propertyToId.constBegin();
while (itProp != propertyToId.constEnd()) {
delete itProp.key();
itProp++;
}
propertyToId.clear();
idToProperty.clear();
currentItem = item;
if (!currentItem) {
deleteAction->setEnabled(false);
return;
}
deleteAction->setEnabled(true);
QtVariantProperty *property;
property = variantManager->addProperty(QVariant::Double, tr("Position X"));
property->setAttribute(QLatin1String("minimum"), 0);
property->setAttribute(QLatin1String("maximum"), canvas->width());
property->setValue(item->x());
addProperty(property, QLatin1String("xpos"));
property = variantManager->addProperty(QVariant::Double, tr("Position Y"));
property->setAttribute(QLatin1String("minimum"), 0);
property->setAttribute(QLatin1String("maximum"), canvas->height());
property->setValue(item->y());
addProperty(property, QLatin1String("ypos"));
property = variantManager->addProperty(QVariant::Double, tr("Position Z"));
property->setAttribute(QLatin1String("minimum"), 0);
property->setAttribute(QLatin1String("maximum"), 256);
property->setValue(item->z());
addProperty(property, QLatin1String("zpos"));
if (item->rtti() == QtCanvasItem::Rtti_Rectangle) {
QtCanvasRectangle *i = (QtCanvasRectangle *)item;
property = variantManager->addProperty(QVariant::Color, tr("Brush Color"));
property->setValue(i->brush().color());
addProperty(property, QLatin1String("brush"));
property = variantManager->addProperty(QVariant::Color, tr("Pen Color"));
property->setValue(i->pen().color());
addProperty(property, QLatin1String("pen"));
property = variantManager->addProperty(QVariant::Size, tr("Size"));
property->setValue(i->size());
addProperty(property, QLatin1String("size"));
} else if (item->rtti() == QtCanvasItem::Rtti_Line) {
QtCanvasLine *i = (QtCanvasLine *)item;
property = variantManager->addProperty(QVariant::Color, tr("Pen Color"));
property->setValue(i->pen().color());
addProperty(property, QLatin1String("pen"));
property = variantManager->addProperty(QVariant::Point, tr("Vector"));
property->setValue(i->endPoint());
addProperty(property, QLatin1String("endpoint"));
} else if (item->rtti() == QtCanvasItem::Rtti_Ellipse) {
QtCanvasEllipse *i = (QtCanvasEllipse *)item;
property = variantManager->addProperty(QVariant::Color, tr("Brush Color"));
property->setValue(i->brush().color());
addProperty(property, QLatin1String("brush"));
property = variantManager->addProperty(QVariant::Size, tr("Size"));
property->setValue(QSize(i->width(), i->height()));
addProperty(property, QLatin1String("size"));
} else if (item->rtti() == QtCanvasItem::Rtti_Text) {
QtCanvasText *i = (QtCanvasText *)item;
property = variantManager->addProperty(QVariant::Color, tr("Color"));
property->setValue(i->color());
addProperty(property, QLatin1String("color"));
property = variantManager->addProperty(QVariant::String, tr("Text"));
property->setValue(i->text());
addProperty(property, QLatin1String("text"));
property = variantManager->addProperty(QVariant::Font, tr("Font"));
property->setValue(i->font());
addProperty(property, QLatin1String("font"));
}
}
void MainWindow::addProperty(QtVariantProperty *property, const QString &id)
{
propertyToId[property] = id;
idToProperty[id] = property;
QtBrowserItem *item = propertyEditor->addProperty(property);
if (idToExpanded.contains(id))
propertyEditor->setExpanded(item, idToExpanded[id]);
}
void MainWindow::valueChanged(QtProperty *property, const QVariant &value)
{
if (!propertyToId.contains(property))
return;
if (!currentItem)
return;
QString id = propertyToId[property];
if (id == QLatin1String("xpos")) {
currentItem->setX(value.toDouble());
} else if (id == QLatin1String("ypos")) {
currentItem->setY(value.toDouble());
} else if (id == QLatin1String("zpos")) {
currentItem->setZ(value.toDouble());
} else if (id == QLatin1String("text")) {
if (currentItem->rtti() == QtCanvasItem::Rtti_Text) {
QtCanvasText *i = (QtCanvasText *)currentItem;
i->setText(value.value<QString>());
}
} else if (id == QLatin1String("color")) {
if (currentItem->rtti() == QtCanvasItem::Rtti_Text) {
QtCanvasText *i = (QtCanvasText *)currentItem;
i->setColor(value.value<QColor>());
}
} else if (id == QLatin1String("brush")) {
if (currentItem->rtti() == QtCanvasItem::Rtti_Rectangle ||
currentItem->rtti() == QtCanvasItem::Rtti_Ellipse) {
QtCanvasPolygonalItem *i = (QtCanvasPolygonalItem *)currentItem;
QBrush b = i->brush();
b.setColor(value.value<QColor>());
i->setBrush(b);
}
} else if (id == QLatin1String("pen")) {
if (currentItem->rtti() == QtCanvasItem::Rtti_Rectangle ||
currentItem->rtti() == QtCanvasItem::Rtti_Line) {
QtCanvasPolygonalItem *i = (QtCanvasPolygonalItem *)currentItem;
QPen p = i->pen();
p.setColor(value.value<QColor>());
i->setPen(p);
}
} else if (id == QLatin1String("font")) {
if (currentItem->rtti() == QtCanvasItem::Rtti_Text) {
QtCanvasText *i = (QtCanvasText *)currentItem;
i->setFont(value.value<QFont>());
}
} else if (id == QLatin1String("endpoint")) {
if (currentItem->rtti() == QtCanvasItem::Rtti_Line) {
QtCanvasLine *i = (QtCanvasLine *)currentItem;
QPoint p = value.value<QPoint>();
i->setPoints(i->startPoint().x(), i->startPoint().y(), p.x(), p.y());
}
} else if (id == QLatin1String("size")) {
if (currentItem->rtti() == QtCanvasItem::Rtti_Rectangle) {
QtCanvasRectangle *i = (QtCanvasRectangle *)currentItem;
QSize s = value.value<QSize>();
i->setSize(s.width(), s.height());
} else if (currentItem->rtti() == QtCanvasItem::Rtti_Ellipse) {
QtCanvasEllipse *i = (QtCanvasEllipse *)currentItem;
QSize s = value.value<QSize>();
i->setSize(s.width(), s.height());
}
}
canvas->update();
}

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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of a Qt Solutions component.
**
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
****************************************************************************/
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QMap>
#include "qtcanvas.h"
class QtVariantProperty;
class QtProperty;
class QtBrowserIndex;
class CanvasView : public QtCanvasView
{
Q_OBJECT
public:
CanvasView(QWidget *parent = 0)
: QtCanvasView(parent), moving(0) { }
CanvasView(QtCanvas *canvas, QWidget *parent = 0)
: QtCanvasView(canvas, parent), moving(0) { }
signals:
void itemClicked(QtCanvasItem *item);
void itemMoved(QtCanvasItem *item);
protected:
void contentsMousePressEvent(QMouseEvent *event);
void contentsMouseDoubleClickEvent(QMouseEvent *event);
void contentsMouseMoveEvent(QMouseEvent* event);
private:
void handleMouseClickEvent(QMouseEvent *event);
QPoint moving_start;
QtCanvasItem *moving;
};
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = 0);
private slots:
void newRectangle();
void newEllipse();
void newLine();
void newText();
void deleteObject();
void clearAll();
void fillView();
void itemClicked(QtCanvasItem *item);
void itemMoved(QtCanvasItem *item);
void valueChanged(QtProperty *property, const QVariant &value);
private:
QtCanvasItem *addRectangle();
QtCanvasItem *addEllipse();
QtCanvasItem *addLine();
QtCanvasItem *addText();
void addProperty(QtVariantProperty *property, const QString &id);
void updateExpandState();
QAction *deleteAction;
class QtVariantPropertyManager *variantManager;
class QtTreePropertyBrowser *propertyEditor;
CanvasView *canvasView;
QtCanvas *canvas;
QtCanvasItem *currentItem;
QMap<QtProperty *, QString> propertyToId;
QMap<QString, QtVariantProperty *> idToProperty;
QMap<QString, bool> idToExpanded;
};
#endif

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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of a Qt Solutions component.
**
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
****************************************************************************/
#ifndef QTCANVAS_H
#define QTCANVAS_H
#include <QPixmap>
#include <QBrush>
#include <QPen>
#include <QPolygon>
#include <QScrollArea>
class QtCanvasSprite;
class QtCanvasPolygonalItem;
class QtCanvasRectangle;
class QtCanvasPolygon;
class QtCanvasEllipse;
class QtCanvasText;
class QtCanvasLine;
class QtCanvasChunk;
class QtCanvas;
class QtCanvasItem;
class QtCanvasView;
class QtCanvasPixmap;
typedef QList<QtCanvasItem *> QtCanvasItemList;
class QtCanvasItemExtra;
class QtCanvasItem
{
public:
QtCanvasItem(QtCanvas* canvas);
virtual ~QtCanvasItem();
double x() const
{ return myx; }
double y() const
{ return myy; }
double z() const
{ return myz; } // (depth)
virtual void moveBy(double dx, double dy);
void move(double x, double y);
void setX(double a) { move(a,y()); }
void setY(double a) { move(x(),a); }
void setZ(double a) { myz=a; changeChunks(); }
bool animated() const;
virtual void setAnimated(bool y);
virtual void setVelocity(double vx, double vy);
void setXVelocity(double vx) { setVelocity(vx,yVelocity()); }
void setYVelocity(double vy) { setVelocity(xVelocity(),vy); }
double xVelocity() const;
double yVelocity() const;
virtual void advance(int stage);
virtual bool collidesWith(const QtCanvasItem*) const=0;
QtCanvasItemList collisions(bool exact /* NO DEFAULT */) const;
virtual void setCanvas(QtCanvas*);
virtual void draw(QPainter&)=0;
void show();
void hide();
virtual void setVisible(bool yes);
bool isVisible() const
{ return (bool)vis; }
virtual void setSelected(bool yes);
bool isSelected() const
{ return (bool)sel; }
virtual void setEnabled(bool yes);
bool isEnabled() const
{ return (bool)ena; }
virtual void setActive(bool yes);
bool isActive() const
{ return (bool)act; }
bool visible() const
{ return (bool)vis; }
bool selected() const
{ return (bool)sel; }
bool enabled() const
{ return (bool)ena; }
bool active() const
{ return (bool)act; }
enum RttiValues {
Rtti_Item = 0,
Rtti_Sprite = 1,
Rtti_PolygonalItem = 2,
Rtti_Text = 3,
Rtti_Polygon = 4,
Rtti_Rectangle = 5,
Rtti_Ellipse = 6,
Rtti_Line = 7,
Rtti_Spline = 8
};
virtual int rtti() const;
static int RTTI;
virtual QRect boundingRect() const=0;
virtual QRect boundingRectAdvanced() const;
QtCanvas* canvas() const
{ return cnv; }
protected:
void update() { changeChunks(); }
private:
// For friendly subclasses...
friend class QtCanvasPolygonalItem;
friend class QtCanvasSprite;
friend class QtCanvasRectangle;
friend class QtCanvasPolygon;
friend class QtCanvasEllipse;
friend class QtCanvasText;
friend class QtCanvasLine;
virtual QPolygon chunks() const;
virtual void addToChunks();
virtual void removeFromChunks();
virtual void changeChunks();
virtual bool collidesWith(const QtCanvasSprite*,
const QtCanvasPolygonalItem*,
const QtCanvasRectangle*,
const QtCanvasEllipse*,
const QtCanvasText*) const = 0;
// End of friend stuff
QtCanvas* cnv;
static QtCanvas* current_canvas;
double myx,myy,myz;
QtCanvasItemExtra *ext;
QtCanvasItemExtra& extra();
uint ani:1;
uint vis:1;
uint val:1;
uint sel:1;
uint ena:1;
uint act:1;
};
class QtCanvasData;
class QtCanvas : public QObject
{
Q_OBJECT
public:
QtCanvas(QObject* parent = 0);
QtCanvas(int w, int h);
QtCanvas(QPixmap p, int h, int v, int tilewidth, int tileheight);
virtual ~QtCanvas();
virtual void setTiles(QPixmap tiles, int h, int v,
int tilewidth, int tileheight);
virtual void setBackgroundPixmap(const QPixmap& p);
QPixmap backgroundPixmap() const;
virtual void setBackgroundColor(const QColor& c);
QColor backgroundColor() const;
virtual void setTile(int x, int y, int tilenum);
int tile(int x, int y) const
{ return grid[x+y*htiles]; }
int tilesHorizontally() const
{ return htiles; }
int tilesVertically() const
{ return vtiles; }
int tileWidth() const
{ return tilew; }
int tileHeight() const
{ return tileh; }
virtual void resize(int width, int height);
int width() const
{ return awidth; }
int height() const
{ return aheight; }
QSize size() const
{ return QSize(awidth,aheight); }
QRect rect() const
{ return QRect(0, 0, awidth, aheight); }
bool onCanvas(int x, int y) const
{ return x>=0 && y>=0 && x<awidth && y<aheight; }
bool onCanvas(const QPoint& p) const
{ return onCanvas(p.x(),p.y()); }
bool validChunk(int x, int y) const
{ return x>=0 && y>=0 && x<chwidth && y<chheight; }
bool validChunk(const QPoint& p) const
{ return validChunk(p.x(),p.y()); }
int chunkSize() const
{ return chunksize; }
virtual void retune(int chunksize, int maxclusters=100);
bool sameChunk(int x1, int y1, int x2, int y2) const
{ return x1/chunksize==x2/chunksize && y1/chunksize==y2/chunksize; }
virtual void setChangedChunk(int i, int j);
virtual void setChangedChunkContaining(int x, int y);
virtual void setAllChanged();
virtual void setChanged(const QRect& area);
virtual void setUnchanged(const QRect& area);
// These call setChangedChunk.
void addItemToChunk(QtCanvasItem*, int i, int j);
void removeItemFromChunk(QtCanvasItem*, int i, int j);
void addItemToChunkContaining(QtCanvasItem*, int x, int y);
void removeItemFromChunkContaining(QtCanvasItem*, int x, int y);
QtCanvasItemList allItems();
QtCanvasItemList collisions(const QPoint&) const;
QtCanvasItemList collisions(const QRect&) const;
QtCanvasItemList collisions(const QPolygon& pa, const QtCanvasItem* item,
bool exact) const;
void drawArea(const QRect&, QPainter* p, bool double_buffer=false);
// These are for QtCanvasView to call
virtual void addView(QtCanvasView*);
virtual void removeView(QtCanvasView*);
void drawCanvasArea(const QRect&, QPainter* p=0, bool double_buffer=true);
void drawViewArea(QtCanvasView* view, QPainter* p, const QRect& r, bool dbuf);
// These are for QtCanvasItem to call
virtual void addItem(QtCanvasItem*);
virtual void addAnimation(QtCanvasItem*);
virtual void removeItem(QtCanvasItem*);
virtual void removeAnimation(QtCanvasItem*);
virtual void setAdvancePeriod(int ms);
virtual void setUpdatePeriod(int ms);
signals:
void resized();
public slots:
virtual void advance();
virtual void update();
protected:
virtual void drawBackground(QPainter&, const QRect& area);
virtual void drawForeground(QPainter&, const QRect& area);
private:
void init(int w, int h, int chunksze=16, int maxclust=100);
QtCanvasChunk& chunk(int i, int j) const;
QtCanvasChunk& chunkContaining(int x, int y) const;
QRect changeBounds();
int awidth,aheight;
int chunksize;
int maxclusters;
int chwidth,chheight;
QtCanvasChunk* chunks;
QtCanvasData* d;
void initTiles(QPixmap p, int h, int v, int tilewidth, int tileheight);
ushort *grid;
ushort htiles;
ushort vtiles;
ushort tilew;
ushort tileh;
bool oneone;
QPixmap pm;
QTimer* update_timer;
QColor bgcolor;
bool debug_redraw_areas;
friend void qt_unview(QtCanvas* c);
Q_DISABLE_COPY(QtCanvas)
};
class QtCanvasViewData;
class QtCanvasView : public QScrollArea
{
Q_OBJECT
Q_PROPERTY(bool highQualityRendering READ highQualityRendering WRITE setHighQualityRendering)
public:
QtCanvasView(QWidget* parent=0);
QtCanvasView(QtCanvas* viewing, QWidget* parent=0);
~QtCanvasView();
QtCanvas* canvas() const
{ return viewing; }
void setCanvas(QtCanvas* v);
const QMatrix &worldMatrix() const;
const QMatrix &inverseWorldMatrix() const;
bool setWorldMatrix(const QMatrix &);
virtual QSize sizeHint() const;
bool highQualityRendering() const;
public slots:
void setHighQualityRendering(bool enable);
protected:
friend class QtCanvasWidget;
virtual void drawContents(QPainter *p, int cx, int cy, int cw, int ch);
virtual void contentsMousePressEvent( QMouseEvent* );
virtual void contentsMouseReleaseEvent( QMouseEvent* );
virtual void contentsMouseDoubleClickEvent( QMouseEvent* );
virtual void contentsMouseMoveEvent( QMouseEvent* );
virtual void contentsDragEnterEvent( QDragEnterEvent * );
virtual void contentsDragMoveEvent( QDragMoveEvent * );
virtual void contentsDragLeaveEvent( QDragLeaveEvent * );
virtual void contentsDropEvent( QDropEvent * );
virtual void contentsWheelEvent( QWheelEvent * );
virtual void contentsContextMenuEvent( QContextMenuEvent * );
private:
friend class QtCanvas;
void drawContents(QPainter*);
QtCanvas* viewing;
QtCanvasViewData* d;
private slots:
void updateContentsSize();
private:
Q_DISABLE_COPY(QtCanvasView)
};
class QtCanvasPixmap : public QPixmap
{
public:
#ifndef QT_NO_IMAGEIO
QtCanvasPixmap(const QString& datafilename);
#endif
QtCanvasPixmap(const QImage& image);
QtCanvasPixmap(const QPixmap&, const QPoint& hotspot);
~QtCanvasPixmap();
int offsetX() const
{ return hotx; }
int offsetY() const
{ return hoty; }
void setOffset(int x, int y) { hotx = x; hoty = y; }
private:
Q_DISABLE_COPY(QtCanvasPixmap)
void init(const QImage&);
void init(const QPixmap& pixmap, int hx, int hy);
friend class QtCanvasSprite;
friend class QtCanvasPixmapArray;
friend bool qt_testCollision(const QtCanvasSprite* s1, const QtCanvasSprite* s2);
int hotx,hoty;
QImage* collision_mask;
};
class QtCanvasPixmapArray
{
public:
QtCanvasPixmapArray();
#ifndef QT_NO_IMAGEIO
QtCanvasPixmapArray(const QString& datafilenamepattern, int framecount=0);
#endif
QtCanvasPixmapArray(const QList<QPixmap> &pixmaps, const QPolygon &hotspots = QPolygon());
~QtCanvasPixmapArray();
#ifndef QT_NO_IMAGEIO
bool readPixmaps(const QString& datafilenamepattern, int framecount=0);
bool readCollisionMasks(const QString& filenamepattern);
#endif
// deprecated
bool operator!(); // Failure check.
bool isValid() const;
QtCanvasPixmap* image(int i) const
{ return img ? img[i] : 0; }
void setImage(int i, QtCanvasPixmap* p);
uint count() const
{ return (uint)framecount; }
private:
Q_DISABLE_COPY(QtCanvasPixmapArray)
#ifndef QT_NO_IMAGEIO
bool readPixmaps(const QString& datafilenamepattern, int framecount, bool maskonly);
#endif
void reset();
int framecount;
QtCanvasPixmap** img;
};
class QtCanvasSprite : public QtCanvasItem
{
public:
QtCanvasSprite(QtCanvasPixmapArray* array, QtCanvas* canvas);
void setSequence(QtCanvasPixmapArray* seq);
virtual ~QtCanvasSprite();
void move(double x, double y);
virtual void move(double x, double y, int frame);
void setFrame(int);
enum FrameAnimationType { Cycle, Oscillate };
virtual void setFrameAnimation(FrameAnimationType=Cycle, int step=1, int state=0);
int frame() const
{ return frm; }
int frameCount() const
{ return images->count(); }
int rtti() const;
static int RTTI;
bool collidesWith(const QtCanvasItem*) const;
QRect boundingRect() const;
// is there a reason for these to be protected? Lars
//protected:
int width() const;
int height() const;
int leftEdge() const;
int topEdge() const;
int rightEdge() const;
int bottomEdge() const;
int leftEdge(int nx) const;
int topEdge(int ny) const;
int rightEdge(int nx) const;
int bottomEdge(int ny) const;
QtCanvasPixmap* image() const
{ return images->image(frm); }
virtual QtCanvasPixmap* imageAdvanced() const;
QtCanvasPixmap* image(int f) const
{ return images->image(f); }
virtual void advance(int stage);
public:
void draw(QPainter& painter);
private:
Q_DISABLE_COPY(QtCanvasSprite)
void addToChunks();
void removeFromChunks();
void changeChunks();
int frm;
ushort anim_val;
uint anim_state:2;
uint anim_type:14;
bool collidesWith(const QtCanvasSprite*,
const QtCanvasPolygonalItem*,
const QtCanvasRectangle*,
const QtCanvasEllipse*,
const QtCanvasText*) const;
friend bool qt_testCollision(const QtCanvasSprite* s1,
const QtCanvasSprite* s2);
QtCanvasPixmapArray* images;
};
class QPolygonalProcessor;
class QtCanvasPolygonalItem : public QtCanvasItem
{
public:
QtCanvasPolygonalItem(QtCanvas* canvas);
virtual ~QtCanvasPolygonalItem();
bool collidesWith(const QtCanvasItem*) const;
virtual void setPen(QPen p);
virtual void setBrush(QBrush b);
QPen pen() const
{ return pn; }
QBrush brush() const
{ return br; }
virtual QPolygon areaPoints() const=0;
virtual QPolygon areaPointsAdvanced() const;
QRect boundingRect() const;
int rtti() const;
static int RTTI;
protected:
void draw(QPainter &);
virtual void drawShape(QPainter &) = 0;
bool winding() const;
void setWinding(bool);
void invalidate();
bool isValid() const
{ return (bool)val; }
private:
void scanPolygon(const QPolygon& pa, int winding,
QPolygonalProcessor& process) const;
QPolygon chunks() const;
bool collidesWith(const QtCanvasSprite*,
const QtCanvasPolygonalItem*,
const QtCanvasRectangle*,
const QtCanvasEllipse*,
const QtCanvasText*) const;
QBrush br;
QPen pn;
uint wind:1;
};
class QtCanvasRectangle : public QtCanvasPolygonalItem
{
public:
QtCanvasRectangle(QtCanvas* canvas);
QtCanvasRectangle(const QRect&, QtCanvas* canvas);
QtCanvasRectangle(int x, int y, int width, int height, QtCanvas* canvas);
~QtCanvasRectangle();
int width() const;
int height() const;
void setSize(int w, int h);
QSize size() const
{ return QSize(w,h); }
QPolygon areaPoints() const;
QRect rect() const
{ return QRect(int(x()),int(y()),w,h); }
bool collidesWith(const QtCanvasItem*) const;
int rtti() const;
static int RTTI;
protected:
void drawShape(QPainter &);
QPolygon chunks() const;
private:
bool collidesWith( const QtCanvasSprite*,
const QtCanvasPolygonalItem*,
const QtCanvasRectangle*,
const QtCanvasEllipse*,
const QtCanvasText*) const;
int w, h;
};
class QtCanvasPolygon : public QtCanvasPolygonalItem
{
public:
QtCanvasPolygon(QtCanvas* canvas);
~QtCanvasPolygon();
void setPoints(QPolygon);
QPolygon points() const;
void moveBy(double dx, double dy);
QPolygon areaPoints() const;
int rtti() const;
static int RTTI;
protected:
void drawShape(QPainter &);
QPolygon poly;
};
class QtCanvasSpline : public QtCanvasPolygon
{
public:
QtCanvasSpline(QtCanvas* canvas);
~QtCanvasSpline();
void setControlPoints(QPolygon, bool closed=true);
QPolygon controlPoints() const;
bool closed() const;
int rtti() const;
static int RTTI;
private:
void recalcPoly();
QPolygon bez;
bool cl;
};
class QtCanvasLine : public QtCanvasPolygonalItem
{
public:
QtCanvasLine(QtCanvas* canvas);
~QtCanvasLine();
void setPoints(int x1, int y1, int x2, int y2);
QPoint startPoint() const
{ return QPoint(x1,y1); }
QPoint endPoint() const
{ return QPoint(x2,y2); }
int rtti() const;
static int RTTI;
void setPen(QPen p);
void moveBy(double dx, double dy);
protected:
void drawShape(QPainter &);
QPolygon areaPoints() const;
private:
int x1,y1,x2,y2;
};
class QtCanvasEllipse : public QtCanvasPolygonalItem
{
public:
QtCanvasEllipse(QtCanvas* canvas);
QtCanvasEllipse(int width, int height, QtCanvas* canvas);
QtCanvasEllipse(int width, int height, int startangle, int angle,
QtCanvas* canvas);
~QtCanvasEllipse();
int width() const;
int height() const;
void setSize(int w, int h);
void setAngles(int start, int length);
int angleStart() const
{ return a1; }
int angleLength() const
{ return a2; }
QPolygon areaPoints() const;
bool collidesWith(const QtCanvasItem*) const;
int rtti() const;
static int RTTI;
protected:
void drawShape(QPainter &);
private:
bool collidesWith(const QtCanvasSprite*,
const QtCanvasPolygonalItem*,
const QtCanvasRectangle*,
const QtCanvasEllipse*,
const QtCanvasText*) const;
int w, h;
int a1, a2;
};
class QtCanvasTextExtra;
class QtCanvasText : public QtCanvasItem
{
public:
QtCanvasText(QtCanvas* canvas);
QtCanvasText(const QString&, QtCanvas* canvas);
QtCanvasText(const QString&, QFont, QtCanvas* canvas);
virtual ~QtCanvasText();
void setText(const QString&);
void setFont(const QFont&);
void setColor(const QColor&);
QString text() const;
QFont font() const;
QColor color() const;
void moveBy(double dx, double dy);
int textFlags() const
{ return flags; }
void setTextFlags(int);
QRect boundingRect() const;
bool collidesWith(const QtCanvasItem*) const;
int rtti() const;
static int RTTI;
protected:
virtual void draw(QPainter&);
private:
Q_DISABLE_COPY(QtCanvasText)
void addToChunks();
void removeFromChunks();
void changeChunks();
void setRect();
QRect brect;
QString txt;
int flags;
QFont fnt;
QColor col;
QtCanvasTextExtra* extra;
bool collidesWith(const QtCanvasSprite*,
const QtCanvasPolygonalItem*,
const QtCanvasRectangle*,
const QtCanvasEllipse*,
const QtCanvasText*) const;
};
#endif // QTCANVAS_H