mirror of
https://invent.kde.org/graphics/okular
synced 2024-10-03 22:54:31 +00:00
ba35bbd9e6
A future ECM is going to force that on us, so do it early
405 lines
11 KiB
C++
405 lines
11 KiB
C++
/*
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SPDX-FileCopyrightText: 2012 Marco Martin <mart@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "pageitem.h"
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#include "documentitem.h"
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#include <QPainter>
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#include <QQuickWindow>
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#include <QSGSimpleTextureNode>
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#include <QStyleOptionGraphicsItem>
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#include <QTimer>
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#include <core/bookmarkmanager.h>
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#include <core/generator.h>
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#include <core/page.h>
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#include "gui/pagepainter.h"
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#include "gui/priorities.h"
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#include "settings.h"
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#define REDRAW_TIMEOUT 250
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PageItem::PageItem(QQuickItem *parent)
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: QQuickItem(parent)
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, Okular::View(QStringLiteral("PageView"))
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, m_page(nullptr)
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, m_bookmarked(false)
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, m_isThumbnail(false)
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{
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setFlag(QQuickItem::ItemHasContents, true);
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m_viewPort.rePos.enabled = true;
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m_redrawTimer = new QTimer(this);
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m_redrawTimer->setInterval(REDRAW_TIMEOUT);
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m_redrawTimer->setSingleShot(true);
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connect(m_redrawTimer, &QTimer::timeout, this, &PageItem::requestPixmap);
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connect(this, &QQuickItem::windowChanged, m_redrawTimer, [this]() { m_redrawTimer->start(); });
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}
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PageItem::~PageItem()
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{
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}
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void PageItem::setFlickable(QQuickItem *flickable)
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{
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if (m_flickable.data() == flickable) {
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return;
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}
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// check the object can act as a flickable
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if (!flickable->property("contentX").isValid() || !flickable->property("contentY").isValid()) {
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return;
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}
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if (m_flickable) {
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disconnect(m_flickable.data(), nullptr, this, nullptr);
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}
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// check the object can act as a flickable
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if (!flickable->property("contentX").isValid() || !flickable->property("contentY").isValid()) {
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m_flickable.clear();
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return;
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}
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m_flickable = flickable;
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if (flickable) {
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// QQuickFlickable is not exported so we need the old-style connects here
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connect(flickable, SIGNAL(contentXChanged()), this, SLOT(contentXChanged())); // clazy:exclude=old-style-connect
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connect(flickable, SIGNAL(contentYChanged()), this, SLOT(contentYChanged())); // clazy:exclude=old-style-connect
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}
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Q_EMIT flickableChanged();
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}
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QQuickItem *PageItem::flickable() const
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{
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return m_flickable.data();
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}
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DocumentItem *PageItem::document() const
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{
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return m_documentItem.data();
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}
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void PageItem::setDocument(DocumentItem *doc)
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{
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if (doc == m_documentItem.data() || !doc) {
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return;
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}
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m_page = nullptr;
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disconnect(doc, nullptr, this, nullptr);
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m_documentItem = doc;
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Observer *observer = m_isThumbnail ? m_documentItem.data()->thumbnailObserver() : m_documentItem.data()->pageviewObserver();
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connect(observer, &Observer::pageChanged, this, &PageItem::pageHasChanged);
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connect(doc->document()->bookmarkManager(), &Okular::BookmarkManager::bookmarksChanged, this, &PageItem::checkBookmarksChanged);
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setPageNumber(0);
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Q_EMIT documentChanged();
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m_redrawTimer->start();
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connect(doc, &DocumentItem::urlChanged, this, &PageItem::refreshPage);
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}
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int PageItem::pageNumber() const
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{
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return m_viewPort.pageNumber;
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}
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void PageItem::setPageNumber(int number)
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{
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if ((m_page && m_viewPort.pageNumber == number) || !m_documentItem || !m_documentItem.data()->isOpened() || number < 0) {
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return;
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}
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m_viewPort.pageNumber = number;
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refreshPage();
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Q_EMIT pageNumberChanged();
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checkBookmarksChanged();
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}
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void PageItem::refreshPage()
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{
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if (uint(m_viewPort.pageNumber) < m_documentItem.data()->document()->pages()) {
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m_page = m_documentItem.data()->document()->page(m_viewPort.pageNumber);
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} else {
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m_page = nullptr;
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}
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Q_EMIT implicitWidthChanged();
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Q_EMIT implicitHeightChanged();
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m_redrawTimer->start();
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}
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int PageItem::implicitWidth() const
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{
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if (m_page) {
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return m_page->width();
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}
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return 0;
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}
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int PageItem::implicitHeight() const
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{
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if (m_page) {
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return m_page->height();
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}
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return 0;
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}
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bool PageItem::isBookmarked()
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{
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return m_bookmarked;
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}
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void PageItem::setBookmarked(bool bookmarked)
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{
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if (!m_documentItem) {
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return;
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}
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if (bookmarked == m_bookmarked) {
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return;
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}
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if (bookmarked) {
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m_documentItem.data()->document()->bookmarkManager()->addBookmark(m_viewPort);
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} else {
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m_documentItem.data()->document()->bookmarkManager()->removeBookmark(m_viewPort.pageNumber);
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}
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m_bookmarked = bookmarked;
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Q_EMIT bookmarkedChanged();
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}
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QStringList PageItem::bookmarks() const
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{
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QStringList list;
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const KBookmark::List pageMarks = m_documentItem.data()->document()->bookmarkManager()->bookmarks(m_viewPort.pageNumber);
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for (const KBookmark &bookmark : pageMarks) {
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list << bookmark.url().toString();
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}
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return list;
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}
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void PageItem::goToBookmark(const QString &bookmark)
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{
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Okular::DocumentViewport viewPort(QUrl::fromUserInput(bookmark).fragment(QUrl::FullyDecoded));
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setPageNumber(viewPort.pageNumber);
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// Are we in a flickable?
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if (m_flickable) {
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// normalizedX is a proportion, so contentX will be the difference between document and viewport times normalizedX
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m_flickable.data()->setProperty("contentX", qMax((qreal)0, width() - m_flickable.data()->width()) * viewPort.rePos.normalizedX);
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m_flickable.data()->setProperty("contentY", qMax((qreal)0, height() - m_flickable.data()->height()) * viewPort.rePos.normalizedY);
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}
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}
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QPointF PageItem::bookmarkPosition(const QString &bookmark) const
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{
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Okular::DocumentViewport viewPort(QUrl::fromUserInput(bookmark).fragment(QUrl::FullyDecoded));
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if (viewPort.pageNumber != m_viewPort.pageNumber) {
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return QPointF(-1, -1);
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}
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return QPointF(qMax((qreal)0, width() - m_flickable.data()->width()) * viewPort.rePos.normalizedX, qMax((qreal)0, height() - m_flickable.data()->height()) * viewPort.rePos.normalizedY);
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}
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void PageItem::setBookmarkAtPos(qreal x, qreal y)
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{
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Okular::DocumentViewport viewPort(m_viewPort);
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viewPort.rePos.normalizedX = x;
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viewPort.rePos.normalizedY = y;
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m_documentItem.data()->document()->bookmarkManager()->addBookmark(viewPort);
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if (!m_bookmarked) {
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m_bookmarked = true;
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Q_EMIT bookmarkedChanged();
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}
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Q_EMIT bookmarksChanged();
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}
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void PageItem::removeBookmarkAtPos(qreal x, qreal y)
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{
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Okular::DocumentViewport viewPort(m_viewPort);
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viewPort.rePos.enabled = true;
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viewPort.rePos.normalizedX = x;
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viewPort.rePos.normalizedY = y;
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m_documentItem.data()->document()->bookmarkManager()->addBookmark(viewPort);
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if (m_bookmarked && m_documentItem.data()->document()->bookmarkManager()->bookmarks(m_viewPort.pageNumber).count() == 0) {
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m_bookmarked = false;
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Q_EMIT bookmarkedChanged();
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}
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Q_EMIT bookmarksChanged();
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}
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void PageItem::removeBookmark(const QString &bookmark)
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{
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m_documentItem.data()->document()->bookmarkManager()->removeBookmark(Okular::DocumentViewport(bookmark));
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Q_EMIT bookmarksChanged();
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}
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// Reimplemented
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void PageItem::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
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{
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if (newGeometry.size().isEmpty()) {
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return;
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}
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bool changed = false;
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if (newGeometry.size() != oldGeometry.size()) {
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changed = true;
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m_redrawTimer->start();
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}
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QQuickItem::geometryChanged(newGeometry, oldGeometry);
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if (changed) {
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// Why aren't they automatically emitted?
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Q_EMIT widthChanged();
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Q_EMIT heightChanged();
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}
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}
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QSGNode *PageItem::updatePaintNode(QSGNode *node, QQuickItem::UpdatePaintNodeData * /*data*/)
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{
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if (!window() || m_buffer.isNull()) {
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delete node;
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return nullptr;
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}
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QSGSimpleTextureNode *n = static_cast<QSGSimpleTextureNode *>(node);
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if (!n) {
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n = new QSGSimpleTextureNode();
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n->setOwnsTexture(true);
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}
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n->setTexture(window()->createTextureFromImage(m_buffer));
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n->setRect(boundingRect());
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return n;
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}
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void PageItem::requestPixmap()
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{
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if (!m_documentItem || !m_page || !window() || width() <= 0 || height() < 0) {
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if (!m_buffer.isNull()) {
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m_buffer = QImage();
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update();
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}
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return;
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}
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Observer *observer = m_isThumbnail ? m_documentItem.data()->thumbnailObserver() : m_documentItem.data()->pageviewObserver();
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const int priority = m_isThumbnail ? THUMBNAILS_PRIO : PAGEVIEW_PRIO;
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const qreal dpr = window()->devicePixelRatio();
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// Here we want to request the pixmap for the page, but it may happen that the page
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// already has the pixmap, thus requestPixmaps would not trigger pageHasChanged
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// and we would not call paint. Always call paint, if we don't have a pixmap
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// it's a noop. Requesting a page that already has a pixmap is also
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// almost a noop.
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// Ideally we would do one or the other but for now this is good enough
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paint();
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{
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auto request = new Okular::PixmapRequest(observer, m_viewPort.pageNumber, width() * dpr, height() * dpr, priority, Okular::PixmapRequest::Asynchronous);
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request->setNormalizedRect(Okular::NormalizedRect(0, 0, 1, 1));
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const Okular::Document::PixmapRequestFlag prf = Okular::Document::NoOption;
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m_documentItem.data()->document()->requestPixmaps({request}, prf);
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}
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}
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void PageItem::paint()
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{
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Observer *observer = m_isThumbnail ? m_documentItem.data()->thumbnailObserver() : m_documentItem.data()->pageviewObserver();
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const int flags = PagePainter::Accessibility | PagePainter::Highlights | PagePainter::Annotations;
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const qreal dpr = window()->devicePixelRatio();
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const QRect limits(QPoint(0, 0), QSize(width() * dpr, height() * dpr));
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QPixmap pix(limits.size());
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pix.setDevicePixelRatio(dpr);
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QPainter p(&pix);
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p.setRenderHint(QPainter::Antialiasing, false);
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PagePainter::paintPageOnPainter(&p, m_page, observer, flags, width(), height(), limits);
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p.end();
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m_buffer = pix.toImage();
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update();
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}
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// Protected slots
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void PageItem::pageHasChanged(int page, int flags)
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{
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if (m_viewPort.pageNumber == page) {
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if (flags == Okular::DocumentObserver::BoundingBox) {
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// skip bounding box updates
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// kDebug() << "32" << m_page->boundingBox();
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} else if (flags == Okular::DocumentObserver::Pixmap) {
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// if pixmaps have updated, just repaint .. don't bother updating pixmaps AGAIN
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paint();
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} else {
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m_redrawTimer->start();
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}
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}
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}
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void PageItem::checkBookmarksChanged()
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{
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if (!m_documentItem) {
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return;
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}
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bool newBookmarked = m_documentItem.data()->document()->bookmarkManager()->isBookmarked(m_viewPort.pageNumber);
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if (m_bookmarked != newBookmarked) {
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m_bookmarked = newBookmarked;
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Q_EMIT bookmarkedChanged();
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}
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// TODO: check the page
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Q_EMIT bookmarksChanged();
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}
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void PageItem::contentXChanged()
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{
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if (!m_flickable || !m_flickable.data()->property("contentX").isValid()) {
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return;
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}
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m_viewPort.rePos.normalizedX = m_flickable.data()->property("contentX").toReal() / (width() - m_flickable.data()->width());
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}
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void PageItem::contentYChanged()
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{
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if (!m_flickable || !m_flickable.data()->property("contentY").isValid()) {
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return;
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}
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m_viewPort.rePos.normalizedY = m_flickable.data()->property("contentY").toReal() / (height() - m_flickable.data()->height());
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}
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void PageItem::setIsThumbnail(bool thumbnail)
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{
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if (thumbnail == m_isThumbnail) {
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return;
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}
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m_isThumbnail = thumbnail;
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/*
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m_redrawTimer->setInterval(thumbnail ? 0 : REDRAW_TIMEOUT);
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m_redrawTimer->setSingleShot(true);
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*/
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}
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