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83 lines
3.8 KiB
83 lines
3.8 KiB
/*************************************************************************** |
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* Copyright (C) 2005 by Enrico Ros <eros.kde@email.it> * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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***************************************************************************/ |
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#ifndef _OKULAR_PAGEPAINTER_H_ |
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#define _OKULAR_PAGEPAINTER_H_ |
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#include <QtGui/QBrush> |
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#include <QtGui/QImage> |
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#include <QtGui/QPen> |
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#include "core/area.h" // for NormalizedPoint |
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class QPainter; |
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class QRect; |
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namespace Okular { |
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class DocumentObserver; |
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class Page; |
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} |
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/** |
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* @short Paints a Okular::Page to an open painter using given flags. |
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*/ |
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class Q_DECL_EXPORT PagePainter |
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{ |
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public: |
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// list of flags passed to the painting function. by OR-ing those flags |
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// you can decide whether or not to permit drawing of a certain feature. |
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enum PagePainterFlags { Accessibility = 1, EnhanceLinks = 2, |
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EnhanceImages = 4, Highlights = 8, |
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TextSelection = 16, Annotations = 32 }; |
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// draw (using painter 'p') the 'page' requested by 'observer' using features |
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// in 'flags'. 'limits' is the bounding rect of the paint operation, |
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// 'scaledWidth' and 'scaledHeight' the expected size of page contents |
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static void paintPageOnPainter( QPainter * p, const Okular::Page * page, Okular::DocumentObserver *observer, |
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int flags, int scaledWidth, int scaledHeight, const QRect & pageLimits ); |
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// draw (using painter 'p') the 'page' requested by 'observer' using features |
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// in 'flags'. |
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// 'pageLimits' is the bounding rect of the paint operation relative to the |
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// top left of the (cropped) page. |
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// 'scaledWidth' and 'scaledHeight' the size of the page pixmap (before cropping). |
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// 'crop' is the (normalized) cropped rectangle within the page. |
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// The painter's (0,0) is assumed to be top left of the painted ('pageLimits') rect. |
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static void paintCroppedPageOnPainter( QPainter * p, const Okular::Page * page, Okular::DocumentObserver *observer, |
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int flags, int scaledWidth, int scaledHeight, const QRect & pageLimits, |
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const Okular::NormalizedRect & crop, Okular::NormalizedPoint *viewPortPoint ); |
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private: |
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static void cropPixmapOnImage( QImage & dest, const QPixmap * src, const QRect & r ); |
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static void recolor(QImage *image, const QColor &foreground, const QColor &background); |
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// create an image taking the 'cropRect' portion of an image scaled |
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// to 'scaledWidth' by 'scaledHeight' pixels. cropRect must be inside |
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// the QRect(0,0, scaledWidth,scaledHeight) |
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static void scalePixmapOnImage( QImage & dest, const QPixmap *src, |
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int scaledWidth, int scaledHeight, const QRect & cropRect, QImage::Format format = QImage::Format_ARGB32_Premultiplied ); |
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// set the alpha component of the image to a given value |
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static void changeImageAlpha( QImage & image, unsigned int alpha ); |
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// my pretty dear raster function |
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typedef QList< Okular::NormalizedPoint > NormalizedPath; |
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enum RasterOperation { Normal, Multiply }; |
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static void drawShapeOnImage( |
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QImage & image, |
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const NormalizedPath & imagePoints, |
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bool closeShape = true, |
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const QPen & pen = QPen(), |
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const QBrush & brush = QBrush(), |
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double penWidthMultiplier = 1.0, |
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RasterOperation op = Normal |
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//float antiAliasRadius = 1.0 |
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); |
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}; |
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#endif
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