mirror of
https://invent.kde.org/graphics/okular
synced 2024-09-17 23:11:48 +00:00
ecc1141e02
Summary: This patch enables HiDPI throughout the application Every pixmap is multiplied by the devicePixelRatioF QPainter code is ajusted to take the DPR value into account All pixmaps get cached with the highest DPR of all screens. When moving the application to another screen, the cache doesn't have to be invalidated. BUGS: 362856 383589 REVIEW: D6268
78 lines
3.4 KiB
C++
78 lines
3.4 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 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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// 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,
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const QPen & pen,
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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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