forked from qt-creator/qt-creator
QmlProfiler: first commit
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Christiaan Janssen
342
src/plugins/qmlprofiler/canvas/qdeclarativecontext2d_p.h
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342
src/plugins/qmlprofiler/canvas/qdeclarativecontext2d_p.h
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtDeclarative module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QDECLARATIVECONTEXT2D_P_H
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#define QDECLARATIVECONTEXT2D_P_H
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#include <QtGui/qpainter.h>
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#include <QtGui/qpainterpath.h>
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#include <QtGui/qpixmap.h>
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#include <QtCore/qstring.h>
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#include <QtCore/qstack.h>
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#include <QtCore/qmetatype.h>
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#include <QtCore/qcoreevent.h>
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#include <QtCore/qvariant.h>
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#include <QtScript/qscriptvalue.h>
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Declarative)
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QColor colorFromString(const QString &name);
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class CanvasGradient : public QObject
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{
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Q_OBJECT
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public:
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CanvasGradient(const QGradient &gradient) : m_gradient(gradient) {}
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public slots:
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QGradient value() { return m_gradient; }
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void addColorStop(float pos, const QString &color) { m_gradient.setColorAt(pos, colorFromString(color));}
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public:
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QGradient m_gradient;
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};
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Q_DECLARE_METATYPE(CanvasGradient*)
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class CanvasImage: public QObject
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{
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Q_OBJECT
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Q_PROPERTY(QString src READ src WRITE setSrc NOTIFY sourceChanged)
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Q_PROPERTY(int width READ width)
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Q_PROPERTY(int height READ height)
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public:
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CanvasImage() {}
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CanvasImage(const QString &url) : m_image(url), m_src(url) {}
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CanvasImage(const QPixmap &pixmap) {m_image = pixmap;}
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public slots:
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int width() { return m_image.width(); }
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int height() { return m_image.height(); }
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QPixmap &value() { return m_image; }
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QString src() { return m_src; }
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void setSrc(const QString &src) { m_src = src; m_image.load(src); emit sourceChanged();}
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signals:
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void sourceChanged();
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private:
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QPixmap m_image;
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QString m_src;
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};
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Q_DECLARE_METATYPE(CanvasImage*)
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class ImageData {
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};
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class Context2D : public QObject
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{
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Q_OBJECT
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// compositing
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Q_PROPERTY(qreal globalAlpha READ globalAlpha WRITE setGlobalAlpha)
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Q_PROPERTY(QString globalCompositeOperation READ globalCompositeOperation WRITE setGlobalCompositeOperation)
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Q_PROPERTY(QVariant strokeStyle READ strokeStyle WRITE setStrokeStyle)
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Q_PROPERTY(QVariant fillStyle READ fillStyle WRITE setFillStyle)
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// line caps/joins
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Q_PROPERTY(qreal lineWidth READ lineWidth WRITE setLineWidth)
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Q_PROPERTY(QString lineCap READ lineCap WRITE setLineCap)
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Q_PROPERTY(QString lineJoin READ lineJoin WRITE setLineJoin)
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Q_PROPERTY(qreal miterLimit READ miterLimit WRITE setMiterLimit)
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// shadows
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Q_PROPERTY(qreal shadowOffsetX READ shadowOffsetX WRITE setShadowOffsetX)
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Q_PROPERTY(qreal shadowOffsetY READ shadowOffsetY WRITE setShadowOffsetY)
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Q_PROPERTY(qreal shadowBlur READ shadowBlur WRITE setShadowBlur)
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Q_PROPERTY(QString shadowColor READ shadowColor WRITE setShadowColor)
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// fonts
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Q_PROPERTY(QString font READ font WRITE setFont)
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Q_PROPERTY(QString textBaseline READ textBaseline WRITE setTextBaseline)
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Q_PROPERTY(QString textAlign READ textAlign WRITE setTextAlign)
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enum TextBaseLine { Alphabetic=0, Top, Middle, Bottom, Hanging};
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enum TextAlign { Start=0, End, Left, Right, Center};
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public:
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Context2D(QObject *parent = 0);
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void setSize(int width, int height);
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void setSize(const QSize &size);
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QSize size() const;
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QPoint painterTranslate() const;
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void setPainterTranslate(const QPoint &);
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void scheduleChange();
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void timerEvent(QTimerEvent *e);
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void clear();
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void reset();
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QPixmap pixmap() { return m_pixmap; }
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// compositing
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qreal globalAlpha() const; // (default 1.0)
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QString globalCompositeOperation() const; // (default over)
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QVariant strokeStyle() const; // (default black)
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QVariant fillStyle() const; // (default black)
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void setGlobalAlpha(qreal alpha);
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void setGlobalCompositeOperation(const QString &op);
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void setStrokeStyle(const QVariant &style);
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void setFillStyle(const QVariant &style);
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// line caps/joins
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qreal lineWidth() const; // (default 1)
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QString lineCap() const; // "butt", "round", "square" (default "butt")
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QString lineJoin() const; // "round", "bevel", "miter" (default "miter")
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qreal miterLimit() const; // (default 10)
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void setLineWidth(qreal w);
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void setLineCap(const QString &s);
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void setLineJoin(const QString &s);
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void setMiterLimit(qreal m);
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void setFont(const QString &font);
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QString font();
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void setTextBaseline(const QString &font);
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QString textBaseline();
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void setTextAlign(const QString &font);
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QString textAlign();
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// shadows
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qreal shadowOffsetX() const; // (default 0)
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qreal shadowOffsetY() const; // (default 0)
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qreal shadowBlur() const; // (default 0)
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QString shadowColor() const; // (default black)
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void setShadowOffsetX(qreal x);
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void setShadowOffsetY(qreal y);
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void setShadowBlur(qreal b);
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void setShadowColor(const QString &str);
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struct MouseArea {
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QScriptValue callback;
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QScriptValue data;
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QRectF rect;
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QMatrix matrix;
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};
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const QList<MouseArea> &mouseAreas() const;
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public slots:
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void save(); // push state on state stack
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void restore(); // pop state stack and restore state
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void fillText(const QString &text, qreal x, qreal y);
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void strokeText(const QString &text, qreal x, qreal y);
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void setInPaint(bool val){m_inPaint = val;}
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void scale(qreal x, qreal y);
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void rotate(qreal angle);
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void translate(qreal x, qreal y);
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void transform(qreal m11, qreal m12, qreal m21, qreal m22,
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qreal dx, qreal dy);
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void setTransform(qreal m11, qreal m12, qreal m21, qreal m22,
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qreal dx, qreal dy);
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CanvasGradient *createLinearGradient(qreal x0, qreal y0,
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qreal x1, qreal y1);
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CanvasGradient *createRadialGradient(qreal x0, qreal y0,
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qreal r0, qreal x1,
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qreal y1, qreal r1);
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// rects
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void clearRect(qreal x, qreal y, qreal w, qreal h);
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void fillRect(qreal x, qreal y, qreal w, qreal h);
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void strokeRect(qreal x, qreal y, qreal w, qreal h);
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// mouse
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void mouseArea(qreal x, qreal y, qreal w, qreal h, const QScriptValue &, const QScriptValue & = QScriptValue());
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// path API
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void beginPath();
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void closePath();
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void moveTo(qreal x, qreal y);
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void lineTo(qreal x, qreal y);
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void quadraticCurveTo(qreal cpx, qreal cpy, qreal x, qreal y);
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void bezierCurveTo(qreal cp1x, qreal cp1y,
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qreal cp2x, qreal cp2y, qreal x, qreal y);
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void arcTo(qreal x1, qreal y1, qreal x2, qreal y2, qreal radius);
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void rect(qreal x, qreal y, qreal w, qreal h);
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void arc(qreal x, qreal y, qreal radius,
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qreal startAngle, qreal endAngle,
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bool anticlockwise);
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void fill();
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void stroke();
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void clip();
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bool isPointInPath(qreal x, qreal y) const;
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CanvasImage *createImage(const QString &url);
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// drawing images (no overloads due to QTBUG-11604)
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void drawImage(const QVariant &var, qreal dx, qreal dy, qreal dw, qreal dh);
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// pixel manipulation
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ImageData getImageData(qreal sx, qreal sy, qreal sw, qreal sh);
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void putImageData(ImageData image, qreal dx, qreal dy);
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void endPainting();
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signals:
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void changed();
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private:
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void setupPainter();
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void beginPainting();
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void updateShadowBuffer();
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int m_changeTimerId;
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QPainterPath m_path;
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enum DirtyFlag {
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DirtyTransformationMatrix = 0x00001,
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DirtyClippingRegion = 0x00002,
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DirtyStrokeStyle = 0x00004,
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DirtyFillStyle = 0x00008,
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DirtyGlobalAlpha = 0x00010,
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DirtyLineWidth = 0x00020,
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DirtyLineCap = 0x00040,
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DirtyLineJoin = 0x00080,
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DirtyMiterLimit = 0x00100,
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MDirtyPen = DirtyStrokeStyle
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| DirtyLineWidth
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| DirtyLineCap
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| DirtyLineJoin
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| DirtyMiterLimit,
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DirtyShadowOffsetX = 0x00200,
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DirtyShadowOffsetY = 0x00400,
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DirtyShadowBlur = 0x00800,
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DirtyShadowColor = 0x01000,
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DirtyGlobalCompositeOperation = 0x2000,
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DirtyFont = 0x04000,
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DirtyTextAlign = 0x08000,
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DirtyTextBaseline = 0x10000,
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AllIsFullOfDirt = 0xfffff
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};
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struct State {
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State() : flags(0) {}
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QMatrix matrix;
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QPainterPath clipPath;
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QBrush strokeStyle;
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QBrush fillStyle;
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qreal globalAlpha;
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qreal lineWidth;
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Qt::PenCapStyle lineCap;
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Qt::PenJoinStyle lineJoin;
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qreal miterLimit;
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qreal shadowOffsetX;
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qreal shadowOffsetY;
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qreal shadowBlur;
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QColor shadowColor;
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QPainter::CompositionMode globalCompositeOperation;
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QFont font;
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Context2D::TextAlign textAlign;
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Context2D::TextBaseLine textBaseline;
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int flags;
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};
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int baseLineOffset(Context2D::TextBaseLine value, const QFontMetrics &metrics);
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int textAlignOffset(Context2D::TextAlign value, const QFontMetrics &metrics, const QString &string);
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QMatrix worldMatrix() const;
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QPoint m_painterTranslate;
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State m_state;
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QStack<State> m_stateStack;
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QPixmap m_pixmap;
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QList<MouseArea> m_mouseAreas;
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QImage m_shadowbuffer;
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QVector<QRgb> m_shadowColorIndexBuffer;
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QColor m_shadowColorBuffer;
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QPainter m_painter;
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int m_width, m_height;
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bool m_inPaint;
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};
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // QDECLARATIVECONTEXT2D_P_H
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