okular/ui/pagepainter.h
Albert Astals Cid 3f80eceaae Now (Qt 4.3.1) that QPainter::CompositionMode_Multiply works remove agg2 based code
Actually i think it's even a bit faster now

svn path=/trunk/KDE/kdegraphics/okular/; revision=708877
2007-09-05 22:01:04 +00:00

74 lines
3.1 KiB
C++

/***************************************************************************
* Copyright (C) 2005 by Enrico Ros <eros.kde@email.it> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#ifndef _OKULAR_PAGEPAINTER_H_
#define _OKULAR_PAGEPAINTER_H_
#include <QtGui/QBrush>
#include <QtGui/QImage>
#include <QtGui/QPen>
#include "core/area.h" // for NormalizedPoint
class QPainter;
class QRect;
namespace Okular {
class Page;
}
/**
* @short Paints a Okular::Page to an open painter using given flags.
*/
class PagePainter
{
public:
// list of flags passed to the painting function. by OR-ing those flags
// you can decide wether or not to permit drawing of a certain feature.
enum PagePainterFlags { Accessibility = 1, EnhanceLinks = 2,
EnhanceImages = 4, Highlights = 8,
TextSelection = 16, Annotations = 32 };
// draw (using painter 'p') the 'page' requested by 'id' using features
// in 'flags'. 'limits' is the bounding rect of the paint operation,
// 'scaledWidth' and 'scaledHeight' the expected size of page contents
static void paintPageOnPainter( QPainter * p, const Okular::Page * page, int pixID,
int flags, int scaledWidth, int scaledHeight, const QRect & pageLimits );
private:
static void cropPixmapOnImage( QImage & dest, const QPixmap * src, const QRect & r );
// create an image taking the 'cropRect' portion of an image scaled
// to 'scaledWidth' by 'scaledHeight' pixels. cropRect must be inside
// the QRect(0,0, scaledWidth,scaledHeight)
static void scalePixmapOnImage( QImage & dest, const QPixmap *src,
int scaledWidth, int scaledHeight, const QRect & cropRect, QImage::Format format = QImage::Format_ARGB32_Premultiplied );
// set the alpha component of the image to a given value
static void changeImageAlpha( QImage & image, unsigned int alpha );
// colorize a gray image to the given color
static void colorizeImage( QImage & image, const QColor & color,
unsigned int alpha = 255 );
// my pretty dear raster function
typedef QList< Okular::NormalizedPoint > NormalizedPath;
enum RasterOperation { Normal, Multiply };
static void drawShapeOnImage(
QImage & image,
const NormalizedPath & imagePoints,
bool closeShape = true,
const QPen & pen = QPen(),
const QBrush & brush = QBrush(),
double penWidthMultiplier = 1.0,
RasterOperation op = Normal
//float antiAliasRadius = 1.0
);
};
#endif