mirror of
https://invent.kde.org/graphics/okular
synced 2024-08-24 18:35:37 +00:00
16c25fbb33
Summary: Instead of with wrap anywhere BUGS: 398604 Reviewers: cfeck Reviewed By: cfeck Subscribers: sander, tobiasdeiminger, okular-devel Tags: #okular Differential Revision: https://phabricator.kde.org/D16147
1005 lines
48 KiB
C++
1005 lines
48 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. *
|
|
***************************************************************************/
|
|
|
|
#include "pagepainter.h"
|
|
|
|
// qt / kde includes
|
|
#include <qrect.h>
|
|
#include <qpainter.h>
|
|
#include <qpalette.h>
|
|
#include <qpixmap.h>
|
|
#include <qvarlengtharray.h>
|
|
#include <kiconloader.h>
|
|
#include <QDebug>
|
|
#include <QApplication>
|
|
#include <QIcon>
|
|
|
|
// system includes
|
|
#include <math.h>
|
|
|
|
// local includes
|
|
#include "core/area.h"
|
|
#include "core/page.h"
|
|
#include "core/page_p.h"
|
|
#include "core/annotations.h"
|
|
#include "core/utils.h"
|
|
#include "guiutils.h"
|
|
#include "settings.h"
|
|
#include "core/observer.h"
|
|
#include "core/tile.h"
|
|
#include "settings_core.h"
|
|
#include "ui/debug_ui.h"
|
|
|
|
Q_GLOBAL_STATIC_WITH_ARGS( QPixmap, busyPixmap, ( KIconLoader::global()->loadIcon(QLatin1String("okular"), KIconLoader::NoGroup, IconSize(KIconLoader::Desktop), KIconLoader::DefaultState, QStringList(), 0, true) ) )
|
|
|
|
#define TEXTANNOTATION_ICONSIZE 24
|
|
|
|
inline QPen buildPen( const Okular::Annotation *ann, double width, const QColor &color )
|
|
{
|
|
QPen p(
|
|
QBrush( color ),
|
|
width,
|
|
ann->style().lineStyle() == Okular::Annotation::Dashed ? Qt::DashLine : Qt::SolidLine,
|
|
Qt::SquareCap,
|
|
Qt::MiterJoin
|
|
);
|
|
return p;
|
|
}
|
|
|
|
void PagePainter::paintPageOnPainter( QPainter * destPainter, const Okular::Page * page,
|
|
Okular::DocumentObserver *observer, int flags, int scaledWidth, int scaledHeight, const QRect &limits )
|
|
{
|
|
paintCroppedPageOnPainter( destPainter, page, observer, flags, scaledWidth, scaledHeight, limits,
|
|
Okular::NormalizedRect( 0, 0, 1, 1 ), nullptr );
|
|
}
|
|
|
|
void PagePainter::paintCroppedPageOnPainter( QPainter * destPainter, const Okular::Page * page,
|
|
Okular::DocumentObserver *observer, int flags, int scaledWidth, int scaledHeight, const QRect &limits,
|
|
const Okular::NormalizedRect &crop, Okular::NormalizedPoint *viewPortPoint )
|
|
{
|
|
qreal dpr = destPainter->device()->devicePixelRatioF();
|
|
|
|
/* Calculate the cropped geometry of the page */
|
|
QRect scaledCrop = crop.geometry( scaledWidth, scaledHeight );
|
|
|
|
/* variables prefixed with d are in the device pixels coordinate system, which translates to the rendered output - that means,
|
|
* multiplied with the device pixel ratio of the target PaintDevice */
|
|
const QRect dScaledCrop(QRectF(scaledCrop.x() * dpr, scaledCrop.y() * dpr, scaledCrop.width() * dpr, scaledCrop.height() * dpr).toAlignedRect());
|
|
|
|
int croppedWidth = scaledCrop.width();
|
|
int croppedHeight = scaledCrop.height();
|
|
|
|
int dScaledWidth = ceil(scaledWidth * dpr);
|
|
int dScaledHeight = ceil(scaledHeight * dpr);
|
|
const QRect dLimits(QRectF(limits.x() * dpr, limits.y() * dpr, limits.width() * dpr, limits.height() * dpr).toAlignedRect());
|
|
|
|
QColor paperColor = Qt::white;
|
|
QColor backgroundColor = paperColor;
|
|
if ( Okular::SettingsCore::changeColors() )
|
|
{
|
|
switch ( Okular::SettingsCore::renderMode() )
|
|
{
|
|
case Okular::SettingsCore::EnumRenderMode::Inverted:
|
|
backgroundColor = Qt::black;
|
|
break;
|
|
case Okular::SettingsCore::EnumRenderMode::Paper:
|
|
paperColor = Okular::SettingsCore::paperColor();
|
|
backgroundColor = paperColor;
|
|
break;
|
|
case Okular::SettingsCore::EnumRenderMode::Recolor:
|
|
backgroundColor = Okular::Settings::recolorBackground();
|
|
break;
|
|
default: ;
|
|
}
|
|
}
|
|
destPainter->fillRect( limits, backgroundColor );
|
|
|
|
const bool hasTilesManager = page->hasTilesManager( observer );
|
|
QPixmap pixmap;
|
|
|
|
if ( !hasTilesManager )
|
|
{
|
|
/** 1 - RETRIEVE THE 'PAGE+ID' PIXMAP OR A SIMILAR 'PAGE' ONE **/
|
|
const QPixmap *p = page->_o_nearestPixmap( observer, dScaledWidth, dScaledHeight );
|
|
|
|
if (p != NULL) {
|
|
pixmap = *p;
|
|
pixmap.setDevicePixelRatio( qApp->devicePixelRatio() );
|
|
}
|
|
|
|
/** 1B - IF NO PIXMAP, DRAW EMPTY PAGE **/
|
|
double pixmapRescaleRatio = !pixmap.isNull() ? dScaledWidth / (double)pixmap.width() : -1;
|
|
long pixmapPixels = !pixmap.isNull() ? (long)pixmap.width() * (long)pixmap.height() : 0;
|
|
if ( pixmap.isNull() || pixmapRescaleRatio > 20.0 || pixmapRescaleRatio < 0.25 ||
|
|
(dScaledWidth > pixmap.width() && pixmapPixels > 60000000L) )
|
|
{
|
|
// draw something on the blank page: the okular icon or a cross (as a fallback)
|
|
if ( !busyPixmap()->isNull() )
|
|
{
|
|
busyPixmap->setDevicePixelRatio(dpr);
|
|
destPainter->drawPixmap( QPoint( 10, 10 ), *busyPixmap() );
|
|
}
|
|
else
|
|
{
|
|
destPainter->setPen( Qt::gray );
|
|
destPainter->drawLine( 0, 0, croppedWidth-1, croppedHeight-1 );
|
|
destPainter->drawLine( 0, croppedHeight-1, croppedWidth-1, 0 );
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
/** 2 - FIND OUT WHAT TO PAINT (Flags + Configuration + Presence) **/
|
|
bool canDrawHighlights = (flags & Highlights) && !page->m_highlights.isEmpty();
|
|
bool canDrawTextSelection = (flags & TextSelection) && page->textSelection();
|
|
bool canDrawAnnotations = (flags & Annotations) && !page->m_annotations.isEmpty();
|
|
bool enhanceLinks = (flags & EnhanceLinks) && Okular::Settings::highlightLinks();
|
|
bool enhanceImages = (flags & EnhanceImages) && Okular::Settings::highlightImages();
|
|
|
|
// vectors containing objects to draw
|
|
// make this a qcolor, rect map, since we don't need
|
|
// to know s_id here! we are only drawing this right?
|
|
QList< QPair<QColor, Okular::NormalizedRect> > * bufferedHighlights = nullptr;
|
|
QList< Okular::Annotation * > * bufferedAnnotations = nullptr;
|
|
QList< Okular::Annotation * > * unbufferedAnnotations = nullptr;
|
|
Okular::Annotation *boundingRectOnlyAnn = nullptr; // Paint the bounding rect of this annotation
|
|
// fill up lists with visible annotation/highlight objects/text selections
|
|
if ( canDrawHighlights || canDrawTextSelection || canDrawAnnotations )
|
|
{
|
|
// precalc normalized 'limits rect' for intersection
|
|
double nXMin = ( (double)limits.left() / scaledWidth ) + crop.left,
|
|
nXMax = ( (double)limits.right() / scaledWidth ) + crop.left,
|
|
nYMin = ( (double)limits.top() / scaledHeight ) + crop.top,
|
|
nYMax = ( (double)limits.bottom() / scaledHeight ) + crop.top;
|
|
// append all highlights inside limits to their list
|
|
if ( canDrawHighlights )
|
|
{
|
|
if ( !bufferedHighlights )
|
|
bufferedHighlights = new QList< QPair<QColor, Okular::NormalizedRect> >();
|
|
/* else
|
|
{*/
|
|
|
|
Okular::NormalizedRect* limitRect = new Okular::NormalizedRect(nXMin, nYMin, nXMax, nYMax );
|
|
QLinkedList< Okular::HighlightAreaRect * >::const_iterator h2It = page->m_highlights.constBegin(), hEnd = page->m_highlights.constEnd();
|
|
Okular::HighlightAreaRect::const_iterator hIt;
|
|
for ( ; h2It != hEnd; ++h2It )
|
|
for (hIt=(*h2It)->constBegin(); hIt!=(*h2It)->constEnd(); ++hIt)
|
|
{
|
|
if ((*hIt).intersects(limitRect))
|
|
bufferedHighlights->append( qMakePair((*h2It)->color,*hIt) );
|
|
}
|
|
delete limitRect;
|
|
//}
|
|
}
|
|
if ( canDrawTextSelection )
|
|
{
|
|
if ( !bufferedHighlights )
|
|
bufferedHighlights = new QList< QPair<QColor, Okular::NormalizedRect> >();
|
|
/* else
|
|
{*/
|
|
Okular::NormalizedRect* limitRect = new Okular::NormalizedRect(nXMin, nYMin, nXMax, nYMax );
|
|
const Okular::RegularAreaRect *textSelection = page->textSelection();
|
|
Okular::HighlightAreaRect::const_iterator hIt = textSelection->constBegin(), hEnd = textSelection->constEnd();
|
|
for ( ; hIt != hEnd; ++hIt )
|
|
{
|
|
if ( (*hIt).intersects( limitRect ) )
|
|
bufferedHighlights->append( qMakePair( page->textSelectionColor(), *hIt ) );
|
|
}
|
|
delete limitRect;
|
|
//}
|
|
}
|
|
// append annotations inside limits to the un/buffered list
|
|
if ( canDrawAnnotations )
|
|
{
|
|
QLinkedList< Okular::Annotation * >::const_iterator aIt = page->m_annotations.constBegin(), aEnd = page->m_annotations.constEnd();
|
|
for ( ; aIt != aEnd; ++aIt )
|
|
{
|
|
Okular::Annotation * ann = *aIt;
|
|
int flags = ann->flags();
|
|
|
|
if ( flags & Okular::Annotation::Hidden )
|
|
continue;
|
|
|
|
if ( flags & Okular::Annotation::ExternallyDrawn )
|
|
{
|
|
// ExternallyDrawn annots are never rendered by PagePainter.
|
|
// Just paint the boundingRect if the annot is moved or resized.
|
|
if ( flags & (Okular::Annotation::BeingMoved | Okular::Annotation::BeingResized) )
|
|
{
|
|
boundingRectOnlyAnn = ann;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
bool intersects = ann->transformedBoundingRectangle().intersects( nXMin, nYMin, nXMax, nYMax );
|
|
if ( ann->subType() == Okular::Annotation::AText )
|
|
{
|
|
Okular::TextAnnotation * ta = static_cast< Okular::TextAnnotation * >( ann );
|
|
if ( ta->textType() == Okular::TextAnnotation::Linked )
|
|
{
|
|
Okular::NormalizedRect iconrect( ann->transformedBoundingRectangle().left,
|
|
ann->transformedBoundingRectangle().top,
|
|
ann->transformedBoundingRectangle().left + TEXTANNOTATION_ICONSIZE / page->width(),
|
|
ann->transformedBoundingRectangle().top + TEXTANNOTATION_ICONSIZE / page->height() );
|
|
intersects = iconrect.intersects( nXMin, nYMin, nXMax, nYMax );
|
|
}
|
|
}
|
|
if ( intersects )
|
|
{
|
|
Okular::Annotation::SubType type = ann->subType();
|
|
if ( type == Okular::Annotation::ALine || type == Okular::Annotation::AHighlight ||
|
|
type == Okular::Annotation::AInk /*|| (type == Annotation::AGeom && ann->style().opacity() < 0.99)*/ )
|
|
{
|
|
if ( !bufferedAnnotations )
|
|
bufferedAnnotations = new QList< Okular::Annotation * >();
|
|
bufferedAnnotations->append( ann );
|
|
}
|
|
else
|
|
{
|
|
if ( !unbufferedAnnotations )
|
|
unbufferedAnnotations = new QList< Okular::Annotation * >();
|
|
unbufferedAnnotations->append( ann );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// end of intersections checking
|
|
}
|
|
|
|
/** 3 - ENABLE BACKBUFFERING IF DIRECT IMAGE MANIPULATION IS NEEDED **/
|
|
bool bufferAccessibility = (flags & Accessibility) && Okular::SettingsCore::changeColors() && (Okular::SettingsCore::renderMode() != Okular::SettingsCore::EnumRenderMode::Paper);
|
|
bool useBackBuffer = bufferAccessibility || bufferedHighlights || bufferedAnnotations || viewPortPoint;
|
|
QPixmap * backPixmap = nullptr;
|
|
QPainter * mixedPainter = nullptr;
|
|
QRect limitsInPixmap = limits.translated( scaledCrop.topLeft() );
|
|
QRect dLimitsInPixmap = dLimits.translated( dScaledCrop.topLeft() );
|
|
|
|
// limits within full (scaled but uncropped) pixmap
|
|
|
|
/** 4A -- REGULAR FLOW. PAINT PIXMAP NORMAL OR RESCALED USING GIVEN QPAINTER **/
|
|
if ( !useBackBuffer )
|
|
{
|
|
if ( hasTilesManager )
|
|
{
|
|
const Okular::NormalizedRect normalizedLimits( limitsInPixmap, scaledWidth, scaledHeight );
|
|
const QList<Okular::Tile> tiles = page->tilesAt( observer, normalizedLimits );
|
|
QList<Okular::Tile>::const_iterator tIt = tiles.constBegin(), tEnd = tiles.constEnd();
|
|
while ( tIt != tEnd )
|
|
{
|
|
const Okular::Tile &tile = *tIt;
|
|
QRect tileRect = tile.rect().geometry( scaledWidth, scaledHeight ).translated( -scaledCrop.topLeft() );
|
|
QRect dTileRect = QRectF(tileRect.x() * dpr, tileRect.y() * dpr, tileRect.width() * dpr, tileRect.height() * dpr).toAlignedRect();
|
|
QRect limitsInTile = limits & tileRect;
|
|
QRectF dLimitsInTile = dLimits & dTileRect;
|
|
|
|
if ( !limitsInTile.isEmpty() )
|
|
{
|
|
QPixmap* tilePixmap = tile.pixmap();
|
|
tilePixmap->setDevicePixelRatio( qApp->devicePixelRatio() );
|
|
|
|
if ( tilePixmap->width() == dTileRect.width() && tilePixmap->height() == dTileRect.height() ) {
|
|
destPainter->drawPixmap( limitsInTile.topLeft(), *tilePixmap,
|
|
dLimitsInTile.translated( -dTileRect.topLeft() ) );
|
|
} else {
|
|
destPainter->drawPixmap( tileRect, *tilePixmap );
|
|
}
|
|
}
|
|
tIt++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
QPixmap scaledCroppedPixmap = pixmap.scaled(dScaledWidth, dScaledHeight).copy(dLimitsInPixmap);
|
|
scaledCroppedPixmap.setDevicePixelRatio(dpr);
|
|
destPainter->drawPixmap( limits.topLeft(), scaledCroppedPixmap, QRectF(0, 0, dLimits.width(),dLimits.height()));
|
|
}
|
|
|
|
// 4A.2. active painter is the one passed to this method
|
|
mixedPainter = destPainter;
|
|
}
|
|
/** 4B -- BUFFERED FLOW. IMAGE PAINTING + OPERATIONS. QPAINTER OVER PIXMAP **/
|
|
else
|
|
{
|
|
// the image over which we are going to draw
|
|
QImage backImage = QImage( dLimits.width(), dLimits.height(), QImage::Format_ARGB32_Premultiplied );
|
|
backImage.setDevicePixelRatio(dpr);
|
|
backImage.fill( paperColor );
|
|
QPainter p( &backImage );
|
|
|
|
if ( hasTilesManager )
|
|
{
|
|
const Okular::NormalizedRect normalizedLimits( limitsInPixmap, scaledWidth, scaledHeight );
|
|
const QList<Okular::Tile> tiles = page->tilesAt( observer, normalizedLimits );
|
|
QList<Okular::Tile>::const_iterator tIt = tiles.constBegin(), tEnd = tiles.constEnd();
|
|
while ( tIt != tEnd )
|
|
{
|
|
const Okular::Tile &tile = *tIt;
|
|
QRect tileRect = tile.rect().geometry( scaledWidth, scaledHeight ).translated( -scaledCrop.topLeft() );
|
|
QRect dTileRect(QRectF(tileRect.x() * dpr, tileRect.y() * dpr, tileRect.width() * dpr, tileRect.height() * dpr).toAlignedRect());
|
|
QRect limitsInTile = limits & tileRect;
|
|
QRect dLimitsInTile = dLimits & dTileRect;
|
|
|
|
if ( !limitsInTile.isEmpty() )
|
|
{
|
|
QPixmap* tilePixmap = tile.pixmap();
|
|
tilePixmap->setDevicePixelRatio( qApp->devicePixelRatio() );
|
|
|
|
if ( tilePixmap->width() == dTileRect.width() && tilePixmap->height() == dTileRect.height() )
|
|
{
|
|
p.drawPixmap( limitsInTile.translated( -limits.topLeft() ).topLeft(), *tilePixmap,
|
|
dLimitsInTile.translated( -dTileRect.topLeft() ) );
|
|
}
|
|
else
|
|
{
|
|
double xScale = tilePixmap->width() / (double)dTileRect.width();
|
|
double yScale = tilePixmap->height() / (double)dTileRect.height();
|
|
QTransform transform( xScale, 0, 0, yScale, 0, 0 );
|
|
p.drawPixmap( limitsInTile.translated( -limits.topLeft() ), *tilePixmap,
|
|
transform.mapRect( dLimitsInTile ).translated( -transform.mapRect( dTileRect ).topLeft() ) );
|
|
}
|
|
}
|
|
++tIt;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// 4B.1. draw the page pixmap: normal or scaled
|
|
QPixmap scaledCroppedPixmap = pixmap.scaled(dScaledWidth, dScaledHeight).copy(dLimitsInPixmap);
|
|
scaledCroppedPixmap.setDevicePixelRatio(dpr);
|
|
p.drawPixmap( 0, 0, scaledCroppedPixmap );
|
|
}
|
|
|
|
p.end();
|
|
|
|
// 4B.2. modify pixmap following accessibility settings
|
|
if ( bufferAccessibility )
|
|
{
|
|
switch ( Okular::SettingsCore::renderMode() )
|
|
{
|
|
case Okular::SettingsCore::EnumRenderMode::Inverted:
|
|
// Invert image pixels using QImage internal function
|
|
backImage.invertPixels(QImage::InvertRgb);
|
|
break;
|
|
case Okular::SettingsCore::EnumRenderMode::Recolor:
|
|
recolor(&backImage, Okular::Settings::recolorForeground(), Okular::Settings::recolorBackground());
|
|
break;
|
|
case Okular::SettingsCore::EnumRenderMode::BlackWhite:
|
|
// Manual Gray and Contrast
|
|
unsigned int * data = (unsigned int *)backImage.bits();
|
|
int val, pixels = backImage.width() * backImage.height(),
|
|
con = Okular::Settings::bWContrast(), thr = 255 - Okular::Settings::bWThreshold();
|
|
for( int i = 0; i < pixels; ++i )
|
|
{
|
|
val = qGray( data[i] );
|
|
if ( val > thr )
|
|
val = 128 + (127 * (val - thr)) / (255 - thr);
|
|
else if ( val < thr )
|
|
val = (128 * val) / thr;
|
|
if ( con > 2 )
|
|
{
|
|
val = con * ( val - thr ) / 2 + thr;
|
|
if ( val > 255 )
|
|
val = 255;
|
|
else if ( val < 0 )
|
|
val = 0;
|
|
}
|
|
data[i] = qRgba( val, val, val, 255 );
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// 4B.3. highlight rects in page
|
|
if ( bufferedHighlights )
|
|
{
|
|
// draw highlights that are inside the 'limits' paint region
|
|
for (const auto& highlight : *bufferedHighlights)
|
|
{
|
|
const Okular::NormalizedRect & r = highlight.second;
|
|
// find out the rect to highlight on pixmap
|
|
QRect highlightRect = r.geometry( scaledWidth, scaledHeight ).translated( -scaledCrop.topLeft() ).intersected( limits );
|
|
highlightRect.translate( -limits.left(), -limits.top() );
|
|
|
|
const QColor highlightColor = highlight.first;
|
|
QPainter painter(&backImage);
|
|
painter.setCompositionMode(QPainter::CompositionMode_Multiply);
|
|
painter.fillRect(highlightRect, highlightColor);
|
|
|
|
auto frameColor = highlightColor.darker(150);
|
|
const QRect frameRect = r.geometry( scaledWidth, scaledHeight ).translated( -scaledCrop.topLeft() ).translated( -limits.left(), -limits.top() );
|
|
painter.setPen(frameColor);
|
|
painter.drawRect(frameRect);
|
|
}
|
|
}
|
|
|
|
// 4B.4. paint annotations [COMPOSITED ONES]
|
|
if ( bufferedAnnotations )
|
|
{
|
|
// Albert: This is quite "heavy" but all the backImage that reach here are QImage::Format_ARGB32_Premultiplied
|
|
// and have to be so that the QPainter::CompositionMode_Multiply works
|
|
// we could also put a
|
|
// backImage = backImage.convertToFormat(QImage::Format_ARGB32_Premultiplied)
|
|
// that would be almost a noop, but we'll leave the assert for now
|
|
Q_ASSERT(backImage.format() == QImage::Format_ARGB32_Premultiplied);
|
|
// precalc constants for normalizing [0,1] page coordinates into normalized [0,1] limit rect coordinates
|
|
double pageScale = (double)croppedWidth / page->width();
|
|
double xOffset = (double)limits.left() / (double)scaledWidth + crop.left,
|
|
xScale = (double)scaledWidth / (double)limits.width(),
|
|
yOffset = (double)limits.top() / (double)scaledHeight + crop.top,
|
|
yScale = (double)scaledHeight / (double)limits.height();
|
|
|
|
// paint all buffered annotations in the page
|
|
QList< Okular::Annotation * >::const_iterator aIt = bufferedAnnotations->constBegin(), aEnd = bufferedAnnotations->constEnd();
|
|
for ( ; aIt != aEnd; ++aIt )
|
|
{
|
|
Okular::Annotation * a = *aIt;
|
|
Okular::Annotation::SubType type = a->subType();
|
|
QColor acolor = a->style().color();
|
|
if ( !acolor.isValid() )
|
|
acolor = Qt::yellow;
|
|
acolor.setAlphaF( a->style().opacity() );
|
|
|
|
// draw LineAnnotation MISSING: all
|
|
if ( type == Okular::Annotation::ALine )
|
|
{
|
|
// get the annotation
|
|
Okular::LineAnnotation * la = (Okular::LineAnnotation *) a;
|
|
|
|
NormalizedPath path;
|
|
// normalize page point to image
|
|
const QLinkedList<Okular::NormalizedPoint> points = la->transformedLinePoints();
|
|
QLinkedList<Okular::NormalizedPoint>::const_iterator it = points.constBegin();
|
|
QLinkedList<Okular::NormalizedPoint>::const_iterator itEnd = points.constEnd();
|
|
for ( ; it != itEnd; ++it )
|
|
{
|
|
Okular::NormalizedPoint point;
|
|
point.x = ( (*it).x - xOffset) * xScale;
|
|
point.y = ( (*it).y - yOffset) * yScale;
|
|
path.append( point );
|
|
}
|
|
|
|
const QPen linePen = buildPen( a, a->style().width(), a->style().color() );
|
|
QBrush fillBrush;
|
|
|
|
if ( la->lineClosed() && la->lineInnerColor().isValid() )
|
|
fillBrush = QBrush( la->lineInnerColor() );
|
|
|
|
// draw the line as normalized path into image
|
|
drawShapeOnImage( backImage, path, la->lineClosed(),
|
|
linePen,
|
|
fillBrush, pageScale ,Multiply);
|
|
|
|
if ( path.count() == 2 && fabs( la->lineLeadingForwardPoint() ) > 0.1 )
|
|
{
|
|
Okular::NormalizedPoint delta( la->transformedLinePoints().last().x - la->transformedLinePoints().first().x, la->transformedLinePoints().first().y - la->transformedLinePoints().last().y );
|
|
double angle = atan2( delta.y, delta.x );
|
|
if ( delta.y < 0 )
|
|
angle += 2 * M_PI;
|
|
|
|
int sign = la->lineLeadingForwardPoint() > 0.0 ? 1 : -1;
|
|
double LLx = fabs( la->lineLeadingForwardPoint() ) * cos( angle + sign * M_PI_2 + 2 * M_PI ) / page->width();
|
|
double LLy = fabs( la->lineLeadingForwardPoint() ) * sin( angle + sign * M_PI_2 + 2 * M_PI ) / page->height();
|
|
|
|
NormalizedPath path2;
|
|
NormalizedPath path3;
|
|
|
|
Okular::NormalizedPoint point;
|
|
point.x = ( la->transformedLinePoints().first().x + LLx - xOffset ) * xScale;
|
|
point.y = ( la->transformedLinePoints().first().y - LLy - yOffset ) * yScale;
|
|
path2.append( point );
|
|
point.x = ( la->transformedLinePoints().last().x + LLx - xOffset ) * xScale;
|
|
point.y = ( la->transformedLinePoints().last().y - LLy - yOffset ) * yScale;
|
|
path3.append( point );
|
|
// do we have the extension on the "back"?
|
|
if ( fabs( la->lineLeadingBackwardPoint() ) > 0.1 )
|
|
{
|
|
double LLEx = la->lineLeadingBackwardPoint() * cos( angle - sign * M_PI_2 + 2 * M_PI ) / page->width();
|
|
double LLEy = la->lineLeadingBackwardPoint() * sin( angle - sign * M_PI_2 + 2 * M_PI ) / page->height();
|
|
point.x = ( la->transformedLinePoints().first().x + LLEx - xOffset ) * xScale;
|
|
point.y = ( la->transformedLinePoints().first().y - LLEy - yOffset ) * yScale;
|
|
path2.append( point );
|
|
point.x = ( la->transformedLinePoints().last().x + LLEx - xOffset ) * xScale;
|
|
point.y = ( la->transformedLinePoints().last().y - LLEy - yOffset ) * yScale;
|
|
path3.append( point );
|
|
}
|
|
else
|
|
{
|
|
path2.append( path[0] );
|
|
path3.append( path[1] );
|
|
}
|
|
|
|
drawShapeOnImage( backImage, path2, false, linePen, QBrush(), pageScale, Multiply );
|
|
drawShapeOnImage( backImage, path3, false, linePen, QBrush(), pageScale, Multiply );
|
|
}
|
|
}
|
|
// draw HighlightAnnotation MISSING: under/strike width, feather, capping
|
|
else if ( type == Okular::Annotation::AHighlight )
|
|
{
|
|
// get the annotation
|
|
Okular::HighlightAnnotation * ha = (Okular::HighlightAnnotation *) a;
|
|
Okular::HighlightAnnotation::HighlightType type = ha->highlightType();
|
|
|
|
// draw each quad of the annotation
|
|
int quads = ha->highlightQuads().size();
|
|
for ( int q = 0; q < quads; q++ )
|
|
{
|
|
NormalizedPath path;
|
|
const Okular::HighlightAnnotation::Quad & quad = ha->highlightQuads()[ q ];
|
|
// normalize page point to image
|
|
for ( int i = 0; i < 4; i++ )
|
|
{
|
|
Okular::NormalizedPoint point;
|
|
point.x = (quad.transformedPoint( i ).x - xOffset) * xScale;
|
|
point.y = (quad.transformedPoint( i ).y - yOffset) * yScale;
|
|
path.append( point );
|
|
}
|
|
// draw the normalized path into image
|
|
switch ( type )
|
|
{
|
|
// highlight the whole rect
|
|
case Okular::HighlightAnnotation::Highlight:
|
|
drawShapeOnImage( backImage, path, true, Qt::NoPen, acolor, pageScale, Multiply );
|
|
break;
|
|
// highlight the bottom part of the rect
|
|
case Okular::HighlightAnnotation::Squiggly:
|
|
path[ 3 ].x = ( path[ 0 ].x + path[ 3 ].x ) / 2.0;
|
|
path[ 3 ].y = ( path[ 0 ].y + path[ 3 ].y ) / 2.0;
|
|
path[ 2 ].x = ( path[ 1 ].x + path[ 2 ].x ) / 2.0;
|
|
path[ 2 ].y = ( path[ 1 ].y + path[ 2 ].y ) / 2.0;
|
|
drawShapeOnImage( backImage, path, true, Qt::NoPen, acolor, pageScale, Multiply );
|
|
break;
|
|
// make a line at 3/4 of the height
|
|
case Okular::HighlightAnnotation::Underline:
|
|
path[ 0 ].x = ( 3 * path[ 0 ].x + path[ 3 ].x ) / 4.0;
|
|
path[ 0 ].y = ( 3 * path[ 0 ].y + path[ 3 ].y ) / 4.0;
|
|
path[ 1 ].x = ( 3 * path[ 1 ].x + path[ 2 ].x ) / 4.0;
|
|
path[ 1 ].y = ( 3 * path[ 1 ].y + path[ 2 ].y ) / 4.0;
|
|
path.pop_back();
|
|
path.pop_back();
|
|
drawShapeOnImage( backImage, path, false, QPen( acolor, 2 ), QBrush(), pageScale );
|
|
break;
|
|
// make a line at 1/2 of the height
|
|
case Okular::HighlightAnnotation::StrikeOut:
|
|
path[ 0 ].x = ( path[ 0 ].x + path[ 3 ].x ) / 2.0;
|
|
path[ 0 ].y = ( path[ 0 ].y + path[ 3 ].y ) / 2.0;
|
|
path[ 1 ].x = ( path[ 1 ].x + path[ 2 ].x ) / 2.0;
|
|
path[ 1 ].y = ( path[ 1 ].y + path[ 2 ].y ) / 2.0;
|
|
path.pop_back();
|
|
path.pop_back();
|
|
drawShapeOnImage( backImage, path, false, QPen( acolor, 2 ), QBrush(), pageScale );
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
// draw InkAnnotation MISSING:invar width, PENTRACER
|
|
else if ( type == Okular::Annotation::AInk )
|
|
{
|
|
// get the annotation
|
|
Okular::InkAnnotation * ia = (Okular::InkAnnotation *) a;
|
|
|
|
// draw each ink path
|
|
const QList< QLinkedList<Okular::NormalizedPoint> > transformedInkPaths = ia->transformedInkPaths();
|
|
|
|
const QPen inkPen = buildPen( a, a->style().width(), acolor );
|
|
|
|
int paths = transformedInkPaths.size();
|
|
for ( int p = 0; p < paths; p++ )
|
|
{
|
|
NormalizedPath path;
|
|
const QLinkedList<Okular::NormalizedPoint> & inkPath = transformedInkPaths[ p ];
|
|
|
|
// normalize page point to image
|
|
QLinkedList<Okular::NormalizedPoint>::const_iterator pIt = inkPath.constBegin(), pEnd = inkPath.constEnd();
|
|
for ( ; pIt != pEnd; ++pIt )
|
|
{
|
|
const Okular::NormalizedPoint & inkPoint = *pIt;
|
|
Okular::NormalizedPoint point;
|
|
point.x = (inkPoint.x - xOffset) * xScale;
|
|
point.y = (inkPoint.y - yOffset) * yScale;
|
|
path.append( point );
|
|
}
|
|
// draw the normalized path into image
|
|
drawShapeOnImage( backImage, path, false, inkPen, QBrush(), pageScale );
|
|
}
|
|
}
|
|
} // end current annotation drawing
|
|
}
|
|
if(viewPortPoint)
|
|
{
|
|
QPainter painter(&backImage);
|
|
painter.translate( -limits.left(), -limits.top() );
|
|
painter.setPen( QApplication::palette().color( QPalette::Active, QPalette::Highlight ) );
|
|
painter.drawLine( 0, viewPortPoint->y * scaledHeight + 1, scaledWidth - 1, viewPortPoint->y * scaledHeight + 1 );
|
|
// ROTATION CURRENTLY NOT IMPLEMENTED
|
|
/*
|
|
if( page->rotation() == Okular::Rotation0)
|
|
{
|
|
|
|
}
|
|
else if(page->rotation() == Okular::Rotation270)
|
|
{
|
|
painter.drawLine( viewPortPoint->y * scaledHeight + 1, 0, viewPortPoint->y * scaledHeight + 1, scaledWidth - 1);
|
|
}
|
|
else if(page->rotation() == Okular::Rotation180)
|
|
{
|
|
painter.drawLine( 0, (1.0 - viewPortPoint->y) * scaledHeight - 1, scaledWidth - 1, (1.0 - viewPortPoint->y) * scaledHeight - 1 );
|
|
}
|
|
else if(page->rotation() == Okular::Rotation90) // not right, rotation clock-wise
|
|
{
|
|
painter.drawLine( scaledWidth - (viewPortPoint->y * scaledHeight + 1), 0, scaledWidth - (viewPortPoint->y * scaledHeight + 1), scaledWidth - 1);
|
|
}
|
|
*/
|
|
}
|
|
|
|
// 4B.5. create the back pixmap converting from the local image
|
|
backPixmap = new QPixmap( QPixmap::fromImage( backImage ) );
|
|
backPixmap->setDevicePixelRatio(dpr);
|
|
|
|
// 4B.6. create a painter over the pixmap and set it as the active one
|
|
mixedPainter = new QPainter( backPixmap );
|
|
mixedPainter->translate( -limits.left(), -limits.top() );
|
|
}
|
|
|
|
/** 5 -- MIXED FLOW. Draw ANNOTATIONS [OPAQUE ONES] on ACTIVE PAINTER **/
|
|
if ( unbufferedAnnotations )
|
|
{
|
|
// iterate over annotations and paint AText, AGeom, AStamp
|
|
QList< Okular::Annotation * >::const_iterator aIt = unbufferedAnnotations->constBegin(), aEnd = unbufferedAnnotations->constEnd();
|
|
for ( ; aIt != aEnd; ++aIt )
|
|
{
|
|
Okular::Annotation * a = *aIt;
|
|
|
|
// honor opacity settings on supported types
|
|
unsigned int opacity = (unsigned int)( a->style().color().alpha() * a->style().opacity() );
|
|
// skip the annotation drawing if all the annotation is fully
|
|
// transparent, but not with text annotations
|
|
if ( opacity <= 0 && a->subType() != Okular::Annotation::AText )
|
|
continue;
|
|
|
|
QColor acolor = a->style().color();
|
|
if ( !acolor.isValid() )
|
|
acolor = Qt::yellow;
|
|
acolor.setAlpha( opacity );
|
|
|
|
// get annotation boundary and drawn rect
|
|
QRect annotBoundary = a->transformedBoundingRectangle().geometry( scaledWidth, scaledHeight ).translated( -scaledCrop.topLeft() );
|
|
QRect annotRect = annotBoundary.intersected( limits );
|
|
QRect innerRect( annotRect.left() - annotBoundary.left(), annotRect.top() -
|
|
annotBoundary.top(), annotRect.width(), annotRect.height() );
|
|
QRectF dInnerRect(innerRect.x() * dpr, innerRect.y() * dpr, innerRect.width() * dpr, innerRect.height() * dpr);
|
|
|
|
Okular::Annotation::SubType type = a->subType();
|
|
|
|
// draw TextAnnotation
|
|
if ( type == Okular::Annotation::AText )
|
|
{
|
|
Okular::TextAnnotation * text = (Okular::TextAnnotation *)a;
|
|
if ( text->textType() == Okular::TextAnnotation::InPlace )
|
|
{
|
|
QImage image( annotBoundary.size(), QImage::Format_ARGB32 );
|
|
image.fill( acolor.rgba() );
|
|
QPainter painter( &image );
|
|
painter.setFont( text->textFont() );
|
|
painter.setPen( text->textColor() );
|
|
Qt::AlignmentFlag halign = ( text->inplaceAlignment() == 1 ? Qt::AlignHCenter : ( text->inplaceAlignment() == 2 ? Qt::AlignRight : Qt::AlignLeft ) );
|
|
const double invXScale = (double)page->width() / scaledWidth;
|
|
const double invYScale = (double)page->height() / scaledHeight;
|
|
const double borderWidth = text->style().width();
|
|
painter.scale( 1 / invXScale, 1 / invYScale );
|
|
painter.drawText( borderWidth * invXScale, borderWidth * invYScale,
|
|
(image.width() - 2 * borderWidth) * invXScale,
|
|
(image.height() - 2 * borderWidth) * invYScale,
|
|
Qt::AlignTop | halign | Qt::TextWordWrap,
|
|
text->contents() );
|
|
painter.resetTransform();
|
|
//Required as asking for a zero width pen results
|
|
//in a default width pen (1.0) being created
|
|
if ( borderWidth != 0 )
|
|
{
|
|
QPen pen( Qt::black, borderWidth );
|
|
painter.setPen( pen );
|
|
painter.drawRect( 0, 0, image.width() - 1, image.height() - 1 );
|
|
}
|
|
painter.end();
|
|
|
|
mixedPainter->drawImage( annotBoundary.topLeft(), image );
|
|
}
|
|
else if ( text->textType() == Okular::TextAnnotation::Linked )
|
|
{
|
|
// get pixmap, colorize and alpha-blend it
|
|
QString path;
|
|
QPixmap pixmap = GuiUtils::iconLoader()->loadIcon( text->textIcon().toLower(), KIconLoader::User, 32, KIconLoader::DefaultState, QStringList(), &path, true );
|
|
if ( path.isEmpty() )
|
|
pixmap = GuiUtils::iconLoader()->loadIcon( text->textIcon().toLower(), KIconLoader::NoGroup, 32 );
|
|
QRect annotBoundary2 = QRect( annotBoundary.topLeft(), QSize( TEXTANNOTATION_ICONSIZE * dpr, TEXTANNOTATION_ICONSIZE * dpr ) );
|
|
QRect annotRect2 = annotBoundary2.intersected( limits );
|
|
QRect innerRect2( annotRect2.left() - annotBoundary2.left(), annotRect2.top() -
|
|
annotBoundary2.top(), annotRect2.width(), annotRect2.height() );
|
|
|
|
QPixmap scaledCroppedPixmap = pixmap.scaled(TEXTANNOTATION_ICONSIZE * dpr, TEXTANNOTATION_ICONSIZE * dpr).copy(dInnerRect.toAlignedRect());
|
|
scaledCroppedPixmap.setDevicePixelRatio(dpr);
|
|
QImage scaledCroppedImage = scaledCroppedPixmap.toImage();
|
|
|
|
// if the annotation color is valid (ie it was set), then
|
|
// use it to colorize the icon, otherwise the icon will be
|
|
// "gray"
|
|
if ( a->style().color().isValid() )
|
|
GuiUtils::colorizeImage( scaledCroppedImage, a->style().color(), opacity );
|
|
pixmap = QPixmap::fromImage( scaledCroppedImage );
|
|
|
|
// draw the mangled image to painter
|
|
mixedPainter->drawPixmap( annotRect.topLeft(), pixmap);
|
|
}
|
|
|
|
}
|
|
// draw StampAnnotation
|
|
else if ( type == Okular::Annotation::AStamp )
|
|
{
|
|
Okular::StampAnnotation * stamp = (Okular::StampAnnotation *)a;
|
|
|
|
// get pixmap and alpha blend it if needed
|
|
QPixmap pixmap = GuiUtils::loadStamp( stamp->stampIconName(), annotBoundary.size() );
|
|
if ( !pixmap.isNull() ) // should never happen but can happen on huge sizes
|
|
{
|
|
const QRect dInnerRect(QRectF(innerRect.x() * dpr, innerRect.y() * dpr, innerRect.width() * dpr, innerRect.height() * dpr).toAlignedRect());
|
|
|
|
QPixmap scaledCroppedPixmap = pixmap.scaled(annotBoundary.width() * dpr, annotBoundary.height() * dpr).copy(dInnerRect);
|
|
scaledCroppedPixmap.setDevicePixelRatio(dpr);
|
|
|
|
QImage scaledCroppedImage = scaledCroppedPixmap.toImage();
|
|
|
|
if ( opacity < 255 )
|
|
changeImageAlpha( scaledCroppedImage, opacity );
|
|
pixmap = QPixmap::fromImage( scaledCroppedImage );
|
|
|
|
// draw the scaled and al
|
|
mixedPainter->drawPixmap( annotRect.topLeft(), pixmap );
|
|
}
|
|
}
|
|
// draw GeomAnnotation
|
|
else if ( type == Okular::Annotation::AGeom )
|
|
{
|
|
Okular::GeomAnnotation * geom = (Okular::GeomAnnotation *)a;
|
|
// check whether there's anything to draw
|
|
if ( geom->style().width() || geom->geometricalInnerColor().isValid() )
|
|
{
|
|
mixedPainter->save();
|
|
const double width = geom->style().width() * Okular::Utils::realDpi(nullptr).width() / ( 72.0 * 2.0 ) * scaledWidth / page->width();
|
|
QRectF r( .0, .0, annotBoundary.width(), annotBoundary.height() );
|
|
r.adjust( width, width, -width, -width );
|
|
r.translate( annotBoundary.topLeft() );
|
|
if ( geom->geometricalInnerColor().isValid() )
|
|
{
|
|
r.adjust( width, width, -width, -width );
|
|
const QColor color = geom->geometricalInnerColor();
|
|
mixedPainter->setPen( Qt::NoPen );
|
|
mixedPainter->setBrush( QColor( color.red(), color.green(), color.blue(), opacity ) );
|
|
if ( geom->geometricalType() == Okular::GeomAnnotation::InscribedSquare )
|
|
mixedPainter->drawRect( r );
|
|
else
|
|
mixedPainter->drawEllipse( r );
|
|
r.adjust( -width, -width, width, width );
|
|
}
|
|
if ( geom->style().width() ) // need to check the original size here..
|
|
{
|
|
mixedPainter->setPen( buildPen( a, width * 2, acolor ) );
|
|
mixedPainter->setBrush( Qt::NoBrush );
|
|
if ( geom->geometricalType() == Okular::GeomAnnotation::InscribedSquare )
|
|
mixedPainter->drawRect( r );
|
|
else
|
|
mixedPainter->drawEllipse( r );
|
|
}
|
|
mixedPainter->restore();
|
|
}
|
|
}
|
|
|
|
// draw extents rectangle
|
|
if ( Okular::Settings::debugDrawAnnotationRect() )
|
|
{
|
|
mixedPainter->setPen( a->style().color() );
|
|
mixedPainter->drawRect( annotBoundary );
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( boundingRectOnlyAnn )
|
|
{
|
|
QRect annotBoundary = boundingRectOnlyAnn->transformedBoundingRectangle().geometry( scaledWidth, scaledHeight ).translated( -scaledCrop.topLeft() );
|
|
mixedPainter->setPen( Qt::DashLine );
|
|
mixedPainter->drawRect( annotBoundary );
|
|
}
|
|
|
|
/** 6 -- MIXED FLOW. Draw LINKS+IMAGES BORDER on ACTIVE PAINTER **/
|
|
if ( enhanceLinks || enhanceImages )
|
|
{
|
|
mixedPainter->save();
|
|
mixedPainter->scale( scaledWidth, scaledHeight );
|
|
mixedPainter->translate( -crop.left, -crop.top );
|
|
|
|
QColor normalColor = QApplication::palette().color( QPalette::Active, QPalette::Highlight );
|
|
// enlarging limits for intersection is like growing the 'rectGeometry' below
|
|
QRect limitsEnlarged = limits;
|
|
limitsEnlarged.adjust( -2, -2, 2, 2 );
|
|
// draw rects that are inside the 'limits' paint region as opaque rects
|
|
QLinkedList< Okular::ObjectRect * >::const_iterator lIt = page->m_rects.constBegin(), lEnd = page->m_rects.constEnd();
|
|
for ( ; lIt != lEnd; ++lIt )
|
|
{
|
|
Okular::ObjectRect * rect = *lIt;
|
|
if ( (enhanceLinks && rect->objectType() == Okular::ObjectRect::Action) ||
|
|
(enhanceImages && rect->objectType() == Okular::ObjectRect::Image) )
|
|
{
|
|
if ( limitsEnlarged.intersects( rect->boundingRect( scaledWidth, scaledHeight ).translated( -scaledCrop.topLeft() ) ) )
|
|
{
|
|
mixedPainter->strokePath( rect->region(), QPen( normalColor, 0 ) );
|
|
}
|
|
}
|
|
}
|
|
mixedPainter->restore();
|
|
}
|
|
|
|
/** 7 -- BUFFERED FLOW. Copy BACKPIXMAP on DESTINATION PAINTER **/
|
|
if ( useBackBuffer )
|
|
{
|
|
delete mixedPainter;
|
|
destPainter->drawPixmap( limits.left(), limits.top(), *backPixmap );
|
|
delete backPixmap;
|
|
}
|
|
|
|
// delete object containers
|
|
delete bufferedHighlights;
|
|
delete bufferedAnnotations;
|
|
delete unbufferedAnnotations;
|
|
}
|
|
|
|
|
|
/** Private Helpers :: Pixmap conversion **/
|
|
void PagePainter::cropPixmapOnImage( QImage & dest, const QPixmap * src, const QRect & r )
|
|
{
|
|
qreal dpr = src->devicePixelRatioF();
|
|
|
|
// handle quickly the case in which the whole pixmap has to be converted
|
|
if ( r == QRect( 0, 0, src->width() / dpr, src->height() / dpr ) )
|
|
{
|
|
dest = src->toImage();
|
|
dest = dest.convertToFormat(QImage::Format_ARGB32_Premultiplied);
|
|
}
|
|
// else copy a portion of the src to an internal pixmap (smaller) and convert it
|
|
else
|
|
{
|
|
QImage croppedImage( r.width() * dpr, r.height() * dpr, QImage::Format_ARGB32_Premultiplied );
|
|
croppedImage.setDevicePixelRatio(dpr);
|
|
QPainter p( &croppedImage );
|
|
p.drawPixmap( 0, 0, *src, r.left(), r.top(), r.width(), r.height() );
|
|
p.end();
|
|
dest = croppedImage;
|
|
}
|
|
}
|
|
|
|
void PagePainter::recolor(QImage *image, const QColor &foreground, const QColor &background)
|
|
{
|
|
if (image->format() != QImage::Format_ARGB32_Premultiplied) {
|
|
qCWarning(OkularUiDebug) << "Wrong image format! Converting...";
|
|
*image = image->convertToFormat(QImage::Format_ARGB32_Premultiplied);
|
|
}
|
|
|
|
Q_ASSERT(image->format() == QImage::Format_ARGB32_Premultiplied);
|
|
|
|
const float scaleRed = background.redF() - foreground.redF();
|
|
const float scaleGreen = background.greenF() - foreground.greenF();
|
|
const float scaleBlue = background.blueF() - foreground.blueF();
|
|
|
|
for (int y=0; y<image->height(); y++) {
|
|
QRgb *pixels = reinterpret_cast<QRgb*>(image->scanLine(y));
|
|
|
|
for (int x=0; x<image->width(); x++) {
|
|
const int lightness = qGray(pixels[x]);
|
|
pixels[x] = qRgba(scaleRed * lightness + foreground.red(),
|
|
scaleGreen * lightness + foreground.green(),
|
|
scaleBlue * lightness + foreground.blue(),
|
|
qAlpha(pixels[x]));
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Private Helpers :: Image Drawing **/
|
|
// from Arthur - qt4
|
|
static inline int qt_div_255(int x) { return (x + (x>>8) + 0x80) >> 8; }
|
|
|
|
void PagePainter::changeImageAlpha( QImage & image, unsigned int destAlpha )
|
|
{
|
|
// iterate over all pixels changing the alpha component value
|
|
unsigned int * data = (unsigned int *)image.bits();
|
|
unsigned int pixels = image.width() * image.height();
|
|
|
|
int source, sourceAlpha;
|
|
for( unsigned int i = 0; i < pixels; ++i )
|
|
{ // optimize this loop keeping byte order into account
|
|
source = data[i];
|
|
if ( (sourceAlpha = qAlpha( source )) == 255 )
|
|
{
|
|
// use destAlpha
|
|
data[i] = qRgba( qRed(source), qGreen(source), qBlue(source), destAlpha );
|
|
}
|
|
else
|
|
{
|
|
// use destAlpha * sourceAlpha product
|
|
sourceAlpha = qt_div_255( destAlpha * sourceAlpha );
|
|
data[i] = qRgba( qRed(source), qGreen(source), qBlue(source), sourceAlpha );
|
|
}
|
|
}
|
|
}
|
|
|
|
void PagePainter::drawShapeOnImage(
|
|
QImage & image,
|
|
const NormalizedPath & normPath,
|
|
bool closeShape,
|
|
const QPen & pen,
|
|
const QBrush & brush,
|
|
double penWidthMultiplier,
|
|
RasterOperation op
|
|
//float antiAliasRadius
|
|
)
|
|
{
|
|
// safety checks
|
|
int pointsNumber = normPath.size();
|
|
if ( pointsNumber < 2 )
|
|
return;
|
|
|
|
int imageWidth = image.width();
|
|
int imageHeight = image.height();
|
|
double fImageWidth = (double)imageWidth;
|
|
double fImageHeight = (double)imageHeight;
|
|
|
|
// stroke outline
|
|
double penWidth = (double)pen.width() * penWidthMultiplier;
|
|
QPainter painter(&image);
|
|
painter.setRenderHint(QPainter::Antialiasing);
|
|
QPen pen2 = pen;
|
|
pen2.setWidthF(penWidth);
|
|
painter.setPen(pen2);
|
|
painter.setBrush(brush);
|
|
|
|
if (op == Multiply) {
|
|
painter.setCompositionMode(QPainter::CompositionMode_Multiply);
|
|
}
|
|
|
|
if ( brush.style() == Qt::NoBrush )
|
|
{
|
|
// create a polygon
|
|
QPolygonF poly( closeShape ? pointsNumber + 1 : pointsNumber );
|
|
for ( int i = 0; i < pointsNumber; ++i )
|
|
{
|
|
poly[ i ] = QPointF( normPath[ i ].x * fImageWidth, normPath[ i ].y * fImageHeight );
|
|
}
|
|
if ( closeShape )
|
|
poly[ pointsNumber ] = poly[ 0 ];
|
|
|
|
painter.drawPolyline( poly );
|
|
}
|
|
else
|
|
{
|
|
// create a 'path'
|
|
QPainterPath path;
|
|
path.setFillRule( Qt::WindingFill );
|
|
|
|
path.moveTo( normPath[ 0 ].x * fImageWidth, normPath[ 0 ].y * fImageHeight );
|
|
for ( int i = 1; i < pointsNumber; i++ )
|
|
{
|
|
path.lineTo( normPath[ i ].x * fImageWidth, normPath[ i ].y * fImageHeight );
|
|
}
|
|
if ( closeShape )
|
|
path.closeSubpath();
|
|
|
|
painter.drawPath( path );
|
|
}
|
|
}
|
|
|
|
/* kate: replace-tabs on; indent-width 4; */
|
|
|