displayshape.h Example File
tools/qtdemo/displayshape.h
/****************************************************************************
**
** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
**
** This file is part of the documentation of the Qt Toolkit.
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** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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#ifndef DISPLAYSHAPE_H
#define DISPLAYSHAPE_H
#include <QBrush>
#include <QFont>
#include <QHash>
#include <QPainterPath>
#include <QPen>
#include <QPointF>
#include <QSizeF>
#include <QWidget>
class DisplayShape
{
public:
DisplayShape(const QPointF &position, const QSizeF &maxSize);
virtual ~DisplayShape() {};
virtual bool animate();
virtual bool contains(const QString &key) const;
virtual bool isInteractive() const;
virtual QVariant metaData(const QString &key) const;
virtual void paint(QPainter *painter) const;
virtual QPointF position() const;
virtual QPointF target() const;
virtual QRectF rect() const;
virtual QSizeF size() const;
virtual void removeMetaData(const QString &key);
virtual void setInteractive(bool enable);
virtual void setMetaData(const QString &key, const QVariant &value);
virtual void setPosition(const QPointF &point);
virtual void setSize(const QSizeF &size);
virtual void setTarget(const QPointF &point);
protected:
QHash<QString,QVariant> meta;
QImage image;
QPointF pos;
QPointF targetPos;
QSizeF maxSize;
bool interactive;
};
class PanelShape : public DisplayShape
{
public:
PanelShape(const QPainterPath &path, const QBrush &normal,
const QBrush &highlighted, const QPen &pen,
const QPointF &position, const QSizeF &maxSize);
bool animate();
void paint(QPainter *painter) const;
QRectF rect() const;
private:
QBrush brush;
QBrush highlightedBrush;
QBrush normalBrush;
QPainterPath path;
QPen pen;
};
class TitleShape : public DisplayShape
{
public:
TitleShape(const QString &text, const QFont &font, const QPen &pen,
const QPointF &position, const QSizeF &maxSize,
Qt::Alignment alignment = Qt::AlignVCenter | Qt::AlignLeft);
bool animate();
void paint(QPainter *painter) const;
QRectF rect() const;
private:
QFont font;
QString text;
QPen pen;
QPointF baselineStart;
QRectF textRect;
Qt::Alignment alignment;
};
class ImageShape : public DisplayShape
{
public:
ImageShape(const QImage &original, const QPointF &position,
const QSizeF &maxSize, int alpha = 0,
Qt::Alignment alignment = Qt::AlignCenter);
bool animate();
void paint(QPainter *painter) const;
QRectF rect() const;
private:
void redraw();
int alpha;
QImage source;
QPointF offset;
Qt::Alignment alignment;
};
class DocumentShape : public DisplayShape
{
public:
DocumentShape(const QString &text, const QFont &font,
const QPointF &position, const QSizeF &maxSize,
int alpha = 0);
~DocumentShape();
bool animate();
void paint(QPainter *painter) const;
QRectF rect() const;
private:
void redraw();
QImage source;
int alpha;
QTextDocument textDocument;
};
#endif