mirror of
https://invent.kde.org/graphics/okular
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2b971b07b2
Separated normal & cropped geometries in page items; made the page painter able to draw based on a crop section; add a config + menu option for turning the white borders removal. Based on a patch by the Mr. anonymous kde2eran@tromer.org, thanks. BUG: 161599 svn path=/trunk/KDE/kdegraphics/okular/; revision=809496
86 lines
3.8 KiB
C++
86 lines
3.8 KiB
C++
/***************************************************************************
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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 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 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 'id' 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, int pixID,
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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 'id' 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, int pixID,
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int flags, int scaledWidth, int scaledHeight, const QRect & pageLimits,
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const Okular::NormalizedRect & crop );
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private:
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static void cropPixmapOnImage( QImage & dest, const QPixmap * src, const QRect & r );
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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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// colorize a gray image to the given color
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static void colorizeImage( QImage & image, const QColor & color,
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unsigned int alpha = 255 );
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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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