Michal Humpula
12 years ago
committed by
Albert Astals Cid
parent
9cbe17dbb9
commit
f22d9d2897
7 changed files with 378 additions and 1 deletions
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/*
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License or (at your option) version 3 or any later version |
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* accepted by the membership of KDE e.V. (or its successor approved |
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* by the membership of KDE e.V.), which shall act as a proxy |
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* defined in Section 14 of version 3 of the license. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* |
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*/ |
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#include "magnifierview.h" |
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#include <QPainter> |
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#include <QLabel> |
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#include <QVBoxLayout> |
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#include <QLayoutItem> |
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#include <KLocale> |
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#include <KColorScheme> |
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#include "core/document.h" |
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#include "ui/pagepainter.h" |
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#include "core/generator.h" |
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#include "priorities.h" |
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static const int SCALE = 10; |
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MagnifierView::MagnifierView(Okular::Document* document, QWidget* parent) |
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: QWidget(parent) |
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, m_document(document) |
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, m_page(0) |
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{ |
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} |
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void MagnifierView::notifySetup(const QVector< Okular::Page* >& pages, int setupFlags) |
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{ |
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if (!(setupFlags & Okular::DocumentObserver::DocumentChanged)) { |
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return; |
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} |
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m_pages = pages; |
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m_page = 0; |
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m_current = -1; |
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} |
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void MagnifierView::notifyPageChanged(int page, int flags) |
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{ |
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Q_UNUSED(page); |
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Q_UNUSED(flags); |
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if (isVisible()) { |
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update(); |
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} |
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} |
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bool MagnifierView::canUnloadPixmap(int page) const |
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{ |
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return (page != m_current); |
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} |
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void MagnifierView::notifyCurrentPageChanged(int previous, int current) |
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{ |
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Q_UNUSED(previous); |
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if (current != m_current) { |
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m_current = current; |
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m_page = m_pages[current]; |
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if (isVisible()) { |
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requestPixmap(); |
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update(); |
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} |
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} |
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} |
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void MagnifierView::updateView( const Okular::NormalizedPoint& p, const Okular::Page *page ) |
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{ |
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m_viewpoint = p; |
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if (page != m_page) // ok, we are screwed
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{ |
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m_page = page; |
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m_current = page->number(); |
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} |
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if (isVisible()) { |
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requestPixmap(); |
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update(); |
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} |
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} |
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void MagnifierView::paintEvent(QPaintEvent* e) |
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{ |
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Q_UNUSED(e); |
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QPainter p(this); |
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if (m_page) |
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{ |
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QRect where = QRect(0, 0, width(), height()); |
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PagePainter::paintCroppedPageOnPainter(&p, m_page, this, 0, m_page->width() * SCALE, m_page->height() * SCALE, where, normalizedView(), NULL); |
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} |
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drawTicks(&p); |
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} |
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void MagnifierView::move( int x, int y) |
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{ |
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QWidget::move( x, y ); |
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requestPixmap(); |
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} |
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void MagnifierView::requestPixmap() |
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{ |
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const int full_width = m_page->width() * SCALE; |
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const int full_height = m_page->height() * SCALE; |
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Okular::NormalizedRect nrect = normalizedView(); |
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if (m_page && !m_page->hasPixmap( this, full_width, full_height, nrect )) |
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{ |
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QLinkedList< Okular::PixmapRequest * > requestedPixmaps; |
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Okular::PixmapRequest *p = new Okular::PixmapRequest( this, m_current, full_width, full_height, PAGEVIEW_PRIO, Okular::PixmapRequest::Asynchronous ); |
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if ( m_page->hasTilesManager( this ) ) { |
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p->setTile( true ); |
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} |
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// request a little bit bigger rectangle then currently viewed, but not the full scale page
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const double rect_width = (nrect.right - nrect.left) * 0.5, |
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rect_height = (nrect.bottom - nrect.top) * 0.5; |
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const double top = qMax(nrect.top - rect_height, 0.0); |
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const double bottom = qMin(nrect.bottom + rect_height, 1.0); |
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const double left = qMax(nrect.left - rect_width, 0.0); |
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const double right = qMin(nrect.right + rect_width, 1.0); |
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p->setNormalizedRect( Okular::NormalizedRect(left, top, right, bottom) ); |
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requestedPixmaps.push_back( p ); |
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m_document->requestPixmaps( requestedPixmaps ); |
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} |
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} |
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Okular::NormalizedRect MagnifierView::normalizedView() const |
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{ |
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double h = (double)height() / (SCALE * m_page->height() * 2); |
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double w = (double)width() / (SCALE * m_page->width() * 2); |
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return Okular::NormalizedRect(m_viewpoint.x - w, m_viewpoint.y - h, m_viewpoint.x + w, m_viewpoint.y + h); |
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} |
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void MagnifierView::drawTicks( QPainter *p ) |
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{ |
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p->save(); |
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p->setPen(QPen(QBrush(Qt::SolidPattern), 1, Qt::SolidLine, Qt::FlatCap)); |
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// the cross
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p->drawLine(width() / 2, 0, width() / 2, height()); |
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p->drawLine(0, height() / 2, width(), height() / 2); |
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// the borders
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p->drawLine(1, 1, width() - 1, 1); |
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p->drawLine(width() - 1, 1, width() - 1, height() - 1); |
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p->drawLine(1, height() - 1, width() - 1, height() - 1); |
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p->drawLine(1, height() - 1, 1, 1); |
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// ticks
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// TODO posibility to switch units (pt, mm, cc, in, printing dots)
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float ps = (float)SCALE * 5;// how much pixels in widget is one pixel in document * how often
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int tw = 10; // tick size in pixels
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for ( float x = 0; x < width(); x += ps ) |
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{ |
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p->drawLine(x, 1, x, tw); |
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p->drawLine(x, height(), x, height() - tw); |
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p->drawLine(1, x, tw, x); |
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p->drawLine(width(), x, width() - tw, x); |
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} |
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ps *= 5; // thick ones
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p->setPen(QPen(QBrush(Qt::SolidPattern), 2, Qt::SolidLine, Qt::FlatCap)); |
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for ( float x = 0; x < width(); x += ps ) |
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{ |
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p->drawLine(x, 1, x, tw); |
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p->drawLine(x, height(), x, height() - tw); |
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p->drawLine(1, x, tw, x); |
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p->drawLine(width(), x, width() - tw, x); |
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} |
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p->restore(); |
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} |
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#include "magnifierview.moc" |
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@ -0,0 +1,61 @@ |
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/*
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License or (at your option) version 3 or any later version |
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* accepted by the membership of KDE e.V. (or its successor approved |
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* by the membership of KDE e.V.), which shall act as a proxy |
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* defined in Section 14 of version 3 of the license. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* |
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*/ |
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#ifndef MAGNIFIERVIEW_H |
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#define MAGNIFIERVIEW_H |
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#include <QWidget> |
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#include "core/view.h" |
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#include "core/observer.h" |
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#include <core/page.h> |
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class QLabel; |
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class MagnifierView : public QWidget, public Okular::DocumentObserver |
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{ |
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Q_OBJECT |
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public: |
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MagnifierView( Okular::Document *document, QWidget *parent = 0 ); |
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void notifySetup( const QVector< Okular::Page * > & pages, int setupFlags ); |
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void notifyPageChanged( int page, int flags ); |
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void notifyCurrentPageChanged( int previous, int current ); |
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virtual bool canUnloadPixmap( int page ) const; |
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void updateView( const Okular::NormalizedPoint &p, const Okular::Page * page ); |
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void move( int x, int y ); |
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protected: |
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void paintEvent( QPaintEvent *e ); |
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private: |
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Okular::NormalizedRect normalizedView() const; |
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void requestPixmap(); |
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void drawTicks( QPainter *p ); |
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private: |
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Okular::Document *m_document; |
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Okular::NormalizedPoint m_viewpoint; |
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const Okular::Page *m_page; |
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int m_current; |
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QVector<Okular::Page *> m_pages; |
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}; |
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#endif // MAGNIFIERVIEW_H
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