mirror of
https://invent.kde.org/graphics/okular
synced 2024-09-29 04:34:01 +00:00
a0045a97a2
Summary:
For "Straight Line" annotations, the "Leader Lines" (if any) shall be perpendicular to the main line segment. Current code missed to consider page aspect ratio when calculating the main segment angle, which caused non-perpendicular leader lines.
Note: Bug is only visible with non-PDF documents (i.e. where Okular draws line annotation, instead of generator).
Before:
{F6818453}
After:
{F6818452}
Test Plan:
- open a txt file, the generated page will have aspect ratio 3:4
- configure a "Straight Line" annotation with long leader line
- create a line annotation at 45 degree angle
- check the leader line, it shall be perpendicular to the main line
Reviewers: sander
Reviewed By: sander
Subscribers: aacid, okular-devel
Tags: #okular
Differential Revision: https://phabricator.kde.org/D21136
1005 lines
48 KiB
C++
1005 lines
48 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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#include "pagepainter.h"
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// qt / kde includes
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#include <qrect.h>
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#include <qpainter.h>
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#include <qpalette.h>
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#include <qpixmap.h>
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#include <qvarlengtharray.h>
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#include <kiconloader.h>
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#include <QDebug>
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#include <QApplication>
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#include <QIcon>
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// system includes
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#include <math.h>
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// local includes
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#include "core/area.h"
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#include "core/page.h"
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#include "core/page_p.h"
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#include "core/annotations.h"
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#include "core/utils.h"
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#include "guiutils.h"
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#include "settings.h"
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#include "core/observer.h"
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#include "core/tile.h"
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#include "settings_core.h"
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#include "ui/debug_ui.h"
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Q_GLOBAL_STATIC_WITH_ARGS( QPixmap, busyPixmap, ( KIconLoader::global()->loadIcon(QLatin1String("okular"), KIconLoader::NoGroup, IconSize(KIconLoader::Desktop), KIconLoader::DefaultState, QStringList(), 0, true) ) )
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#define TEXTANNOTATION_ICONSIZE 24
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inline QPen buildPen( const Okular::Annotation *ann, double width, const QColor &color )
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{
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QPen p(
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QBrush( color ),
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width,
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ann->style().lineStyle() == Okular::Annotation::Dashed ? Qt::DashLine : Qt::SolidLine,
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Qt::SquareCap,
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Qt::MiterJoin
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);
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return p;
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}
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void PagePainter::paintPageOnPainter( QPainter * destPainter, const Okular::Page * page,
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Okular::DocumentObserver *observer, int flags, int scaledWidth, int scaledHeight, const QRect &limits )
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{
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paintCroppedPageOnPainter( destPainter, page, observer, flags, scaledWidth, scaledHeight, limits,
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Okular::NormalizedRect( 0, 0, 1, 1 ), nullptr );
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}
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void PagePainter::paintCroppedPageOnPainter( QPainter * destPainter, const Okular::Page * page,
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Okular::DocumentObserver *observer, int flags, int scaledWidth, int scaledHeight, const QRect &limits,
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const Okular::NormalizedRect &crop, Okular::NormalizedPoint *viewPortPoint )
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{
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qreal dpr = destPainter->device()->devicePixelRatioF();
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/* Calculate the cropped geometry of the page */
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QRect scaledCrop = crop.geometry( scaledWidth, scaledHeight );
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/* variables prefixed with d are in the device pixels coordinate system, which translates to the rendered output - that means,
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* multiplied with the device pixel ratio of the target PaintDevice */
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const QRect dScaledCrop(QRectF(scaledCrop.x() * dpr, scaledCrop.y() * dpr, scaledCrop.width() * dpr, scaledCrop.height() * dpr).toAlignedRect());
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int croppedWidth = scaledCrop.width();
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int croppedHeight = scaledCrop.height();
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int dScaledWidth = ceil(scaledWidth * dpr);
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int dScaledHeight = ceil(scaledHeight * dpr);
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const QRect dLimits(QRectF(limits.x() * dpr, limits.y() * dpr, limits.width() * dpr, limits.height() * dpr).toAlignedRect());
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QColor paperColor = Qt::white;
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QColor backgroundColor = paperColor;
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if ( Okular::SettingsCore::changeColors() )
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{
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switch ( Okular::SettingsCore::renderMode() )
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{
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case Okular::SettingsCore::EnumRenderMode::Inverted:
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backgroundColor = Qt::black;
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break;
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case Okular::SettingsCore::EnumRenderMode::Paper:
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paperColor = Okular::SettingsCore::paperColor();
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backgroundColor = paperColor;
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break;
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case Okular::SettingsCore::EnumRenderMode::Recolor:
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backgroundColor = Okular::Settings::recolorBackground();
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break;
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default: ;
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}
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}
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destPainter->fillRect( limits, backgroundColor );
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const bool hasTilesManager = page->hasTilesManager( observer );
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QPixmap pixmap;
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if ( !hasTilesManager )
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{
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/** 1 - RETRIEVE THE 'PAGE+ID' PIXMAP OR A SIMILAR 'PAGE' ONE **/
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const QPixmap *p = page->_o_nearestPixmap( observer, dScaledWidth, dScaledHeight );
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if (p != NULL) {
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pixmap = *p;
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pixmap.setDevicePixelRatio( qApp->devicePixelRatio() );
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}
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/** 1B - IF NO PIXMAP, DRAW EMPTY PAGE **/
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double pixmapRescaleRatio = !pixmap.isNull() ? dScaledWidth / (double)pixmap.width() : -1;
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long pixmapPixels = !pixmap.isNull() ? (long)pixmap.width() * (long)pixmap.height() : 0;
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if ( pixmap.isNull() || pixmapRescaleRatio > 20.0 || pixmapRescaleRatio < 0.25 ||
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(dScaledWidth > pixmap.width() && pixmapPixels > 60000000L) )
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{
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// draw something on the blank page: the okular icon or a cross (as a fallback)
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if ( !busyPixmap()->isNull() )
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{
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busyPixmap->setDevicePixelRatio(dpr);
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destPainter->drawPixmap( QPoint( 10, 10 ), *busyPixmap() );
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}
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else
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{
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destPainter->setPen( Qt::gray );
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destPainter->drawLine( 0, 0, croppedWidth-1, croppedHeight-1 );
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destPainter->drawLine( 0, croppedHeight-1, croppedWidth-1, 0 );
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}
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return;
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}
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}
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/** 2 - FIND OUT WHAT TO PAINT (Flags + Configuration + Presence) **/
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bool canDrawHighlights = (flags & Highlights) && !page->m_highlights.isEmpty();
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bool canDrawTextSelection = (flags & TextSelection) && page->textSelection();
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bool canDrawAnnotations = (flags & Annotations) && !page->m_annotations.isEmpty();
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bool enhanceLinks = (flags & EnhanceLinks) && Okular::Settings::highlightLinks();
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bool enhanceImages = (flags & EnhanceImages) && Okular::Settings::highlightImages();
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// vectors containing objects to draw
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// make this a qcolor, rect map, since we don't need
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// to know s_id here! we are only drawing this right?
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QList< QPair<QColor, Okular::NormalizedRect> > * bufferedHighlights = nullptr;
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QList< Okular::Annotation * > * bufferedAnnotations = nullptr;
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QList< Okular::Annotation * > * unbufferedAnnotations = nullptr;
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Okular::Annotation *boundingRectOnlyAnn = nullptr; // Paint the bounding rect of this annotation
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// fill up lists with visible annotation/highlight objects/text selections
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if ( canDrawHighlights || canDrawTextSelection || canDrawAnnotations )
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{
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// precalc normalized 'limits rect' for intersection
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double nXMin = ( (double)limits.left() / scaledWidth ) + crop.left,
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nXMax = ( (double)limits.right() / scaledWidth ) + crop.left,
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nYMin = ( (double)limits.top() / scaledHeight ) + crop.top,
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nYMax = ( (double)limits.bottom() / scaledHeight ) + crop.top;
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// append all highlights inside limits to their list
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if ( canDrawHighlights )
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{
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if ( !bufferedHighlights )
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bufferedHighlights = new QList< QPair<QColor, Okular::NormalizedRect> >();
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/* else
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{*/
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Okular::NormalizedRect* limitRect = new Okular::NormalizedRect(nXMin, nYMin, nXMax, nYMax );
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QLinkedList< Okular::HighlightAreaRect * >::const_iterator h2It = page->m_highlights.constBegin(), hEnd = page->m_highlights.constEnd();
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Okular::HighlightAreaRect::const_iterator hIt;
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for ( ; h2It != hEnd; ++h2It )
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for (hIt=(*h2It)->constBegin(); hIt!=(*h2It)->constEnd(); ++hIt)
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{
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if ((*hIt).intersects(limitRect))
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bufferedHighlights->append( qMakePair((*h2It)->color,*hIt) );
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}
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delete limitRect;
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//}
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}
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if ( canDrawTextSelection )
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{
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if ( !bufferedHighlights )
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bufferedHighlights = new QList< QPair<QColor, Okular::NormalizedRect> >();
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/* else
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{*/
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Okular::NormalizedRect* limitRect = new Okular::NormalizedRect(nXMin, nYMin, nXMax, nYMax );
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const Okular::RegularAreaRect *textSelection = page->textSelection();
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Okular::HighlightAreaRect::const_iterator hIt = textSelection->constBegin(), hEnd = textSelection->constEnd();
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for ( ; hIt != hEnd; ++hIt )
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{
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if ( (*hIt).intersects( limitRect ) )
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bufferedHighlights->append( qMakePair( page->textSelectionColor(), *hIt ) );
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}
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delete limitRect;
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//}
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}
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// append annotations inside limits to the un/buffered list
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if ( canDrawAnnotations )
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{
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QLinkedList< Okular::Annotation * >::const_iterator aIt = page->m_annotations.constBegin(), aEnd = page->m_annotations.constEnd();
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for ( ; aIt != aEnd; ++aIt )
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{
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Okular::Annotation * ann = *aIt;
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int flags = ann->flags();
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if ( flags & Okular::Annotation::Hidden )
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continue;
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if ( flags & Okular::Annotation::ExternallyDrawn )
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{
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// ExternallyDrawn annots are never rendered by PagePainter.
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// Just paint the boundingRect if the annot is moved or resized.
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if ( flags & (Okular::Annotation::BeingMoved | Okular::Annotation::BeingResized) )
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{
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boundingRectOnlyAnn = ann;
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}
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continue;
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}
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bool intersects = ann->transformedBoundingRectangle().intersects( nXMin, nYMin, nXMax, nYMax );
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if ( ann->subType() == Okular::Annotation::AText )
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{
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Okular::TextAnnotation * ta = static_cast< Okular::TextAnnotation * >( ann );
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if ( ta->textType() == Okular::TextAnnotation::Linked )
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{
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Okular::NormalizedRect iconrect( ann->transformedBoundingRectangle().left,
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ann->transformedBoundingRectangle().top,
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ann->transformedBoundingRectangle().left + TEXTANNOTATION_ICONSIZE / page->width(),
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ann->transformedBoundingRectangle().top + TEXTANNOTATION_ICONSIZE / page->height() );
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intersects = iconrect.intersects( nXMin, nYMin, nXMax, nYMax );
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}
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}
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if ( intersects )
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{
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Okular::Annotation::SubType type = ann->subType();
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if ( type == Okular::Annotation::ALine || type == Okular::Annotation::AHighlight ||
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type == Okular::Annotation::AInk /*|| (type == Annotation::AGeom && ann->style().opacity() < 0.99)*/ )
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{
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if ( !bufferedAnnotations )
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bufferedAnnotations = new QList< Okular::Annotation * >();
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bufferedAnnotations->append( ann );
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}
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else
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{
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if ( !unbufferedAnnotations )
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unbufferedAnnotations = new QList< Okular::Annotation * >();
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unbufferedAnnotations->append( ann );
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}
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}
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}
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}
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// end of intersections checking
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}
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/** 3 - ENABLE BACKBUFFERING IF DIRECT IMAGE MANIPULATION IS NEEDED **/
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bool bufferAccessibility = (flags & Accessibility) && Okular::SettingsCore::changeColors() && (Okular::SettingsCore::renderMode() != Okular::SettingsCore::EnumRenderMode::Paper);
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bool useBackBuffer = bufferAccessibility || bufferedHighlights || bufferedAnnotations || viewPortPoint;
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QPixmap * backPixmap = nullptr;
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QPainter * mixedPainter = nullptr;
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QRect limitsInPixmap = limits.translated( scaledCrop.topLeft() );
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QRect dLimitsInPixmap = dLimits.translated( dScaledCrop.topLeft() );
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// limits within full (scaled but uncropped) pixmap
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/** 4A -- REGULAR FLOW. PAINT PIXMAP NORMAL OR RESCALED USING GIVEN QPAINTER **/
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if ( !useBackBuffer )
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{
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if ( hasTilesManager )
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{
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const Okular::NormalizedRect normalizedLimits( limitsInPixmap, scaledWidth, scaledHeight );
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const QList<Okular::Tile> tiles = page->tilesAt( observer, normalizedLimits );
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QList<Okular::Tile>::const_iterator tIt = tiles.constBegin(), tEnd = tiles.constEnd();
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while ( tIt != tEnd )
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{
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const Okular::Tile &tile = *tIt;
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QRect tileRect = tile.rect().geometry( scaledWidth, scaledHeight ).translated( -scaledCrop.topLeft() );
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QRect dTileRect = QRectF(tileRect.x() * dpr, tileRect.y() * dpr, tileRect.width() * dpr, tileRect.height() * dpr).toAlignedRect();
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QRect limitsInTile = limits & tileRect;
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QRectF dLimitsInTile = dLimits & dTileRect;
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if ( !limitsInTile.isEmpty() )
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{
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QPixmap* tilePixmap = tile.pixmap();
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tilePixmap->setDevicePixelRatio( qApp->devicePixelRatio() );
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if ( tilePixmap->width() == dTileRect.width() && tilePixmap->height() == dTileRect.height() ) {
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destPainter->drawPixmap( limitsInTile.topLeft(), *tilePixmap,
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dLimitsInTile.translated( -dTileRect.topLeft() ) );
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} else {
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destPainter->drawPixmap( tileRect, *tilePixmap );
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}
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}
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tIt++;
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}
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}
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else
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{
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QPixmap scaledCroppedPixmap = pixmap.scaled(dScaledWidth, dScaledHeight).copy(dLimitsInPixmap);
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scaledCroppedPixmap.setDevicePixelRatio(dpr);
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destPainter->drawPixmap( limits.topLeft(), scaledCroppedPixmap, QRectF(0, 0, dLimits.width(),dLimits.height()));
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}
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// 4A.2. active painter is the one passed to this method
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mixedPainter = destPainter;
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}
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/** 4B -- BUFFERED FLOW. IMAGE PAINTING + OPERATIONS. QPAINTER OVER PIXMAP **/
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else
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{
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// the image over which we are going to draw
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QImage backImage = QImage( dLimits.width(), dLimits.height(), QImage::Format_ARGB32_Premultiplied );
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backImage.setDevicePixelRatio(dpr);
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backImage.fill( paperColor );
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QPainter p( &backImage );
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if ( hasTilesManager )
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{
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const Okular::NormalizedRect normalizedLimits( limitsInPixmap, scaledWidth, scaledHeight );
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const QList<Okular::Tile> tiles = page->tilesAt( observer, normalizedLimits );
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QList<Okular::Tile>::const_iterator tIt = tiles.constBegin(), tEnd = tiles.constEnd();
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while ( tIt != tEnd )
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{
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const Okular::Tile &tile = *tIt;
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QRect tileRect = tile.rect().geometry( scaledWidth, scaledHeight ).translated( -scaledCrop.topLeft() );
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QRect dTileRect(QRectF(tileRect.x() * dpr, tileRect.y() * dpr, tileRect.width() * dpr, tileRect.height() * dpr).toAlignedRect());
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QRect limitsInTile = limits & tileRect;
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QRect dLimitsInTile = dLimits & dTileRect;
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if ( !limitsInTile.isEmpty() )
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{
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QPixmap* tilePixmap = tile.pixmap();
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tilePixmap->setDevicePixelRatio( qApp->devicePixelRatio() );
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if ( tilePixmap->width() == dTileRect.width() && tilePixmap->height() == dTileRect.height() )
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{
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p.drawPixmap( limitsInTile.translated( -limits.topLeft() ).topLeft(), *tilePixmap,
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dLimitsInTile.translated( -dTileRect.topLeft() ) );
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}
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else
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{
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double xScale = tilePixmap->width() / (double)dTileRect.width();
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double yScale = tilePixmap->height() / (double)dTileRect.height();
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QTransform transform( xScale, 0, 0, yScale, 0, 0 );
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p.drawPixmap( limitsInTile.translated( -limits.topLeft() ), *tilePixmap,
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transform.mapRect( dLimitsInTile ).translated( -transform.mapRect( dTileRect ).topLeft() ) );
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}
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}
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++tIt;
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}
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}
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else
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{
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// 4B.1. draw the page pixmap: normal or scaled
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QPixmap scaledCroppedPixmap = pixmap.scaled(dScaledWidth, dScaledHeight).copy(dLimitsInPixmap);
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scaledCroppedPixmap.setDevicePixelRatio(dpr);
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p.drawPixmap( 0, 0, scaledCroppedPixmap );
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}
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p.end();
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// 4B.2. modify pixmap following accessibility settings
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if ( bufferAccessibility )
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{
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switch ( Okular::SettingsCore::renderMode() )
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{
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case Okular::SettingsCore::EnumRenderMode::Inverted:
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// Invert image pixels using QImage internal function
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backImage.invertPixels(QImage::InvertRgb);
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break;
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case Okular::SettingsCore::EnumRenderMode::Recolor:
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recolor(&backImage, Okular::Settings::recolorForeground(), Okular::Settings::recolorBackground());
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break;
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case Okular::SettingsCore::EnumRenderMode::BlackWhite:
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// Manual Gray and Contrast
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unsigned int * data = (unsigned int *)backImage.bits();
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int val, pixels = backImage.width() * backImage.height(),
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con = Okular::Settings::bWContrast(), thr = 255 - Okular::Settings::bWThreshold();
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for( int i = 0; i < pixels; ++i )
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{
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val = qGray( data[i] );
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if ( val > thr )
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val = 128 + (127 * (val - thr)) / (255 - thr);
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else if ( val < thr )
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val = (128 * val) / thr;
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if ( con > 2 )
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{
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val = con * ( val - thr ) / 2 + thr;
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if ( val > 255 )
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val = 255;
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else if ( val < 0 )
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val = 0;
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}
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data[i] = qRgba( val, val, val, 255 );
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}
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break;
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}
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}
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// 4B.3. highlight rects in page
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if ( bufferedHighlights )
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{
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// draw highlights that are inside the 'limits' paint region
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for (const auto& highlight : *bufferedHighlights)
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{
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const Okular::NormalizedRect & r = highlight.second;
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// find out the rect to highlight on pixmap
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QRect highlightRect = r.geometry( scaledWidth, scaledHeight ).translated( -scaledCrop.topLeft() ).intersected( limits );
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highlightRect.translate( -limits.left(), -limits.top() );
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const QColor highlightColor = highlight.first;
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QPainter painter(&backImage);
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painter.setCompositionMode(QPainter::CompositionMode_Multiply);
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painter.fillRect(highlightRect, highlightColor);
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auto frameColor = highlightColor.darker(150);
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const QRect frameRect = r.geometry( scaledWidth, scaledHeight ).translated( -scaledCrop.topLeft() ).translated( -limits.left(), -limits.top() );
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painter.setPen(frameColor);
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painter.drawRect(frameRect);
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}
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}
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// 4B.4. paint annotations [COMPOSITED ONES]
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if ( bufferedAnnotations )
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{
|
|
// 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 * page->height(), delta.x * page->width() );
|
|
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; */
|
|
|