mirror of https://github.com/JakubMelka/PDF4QT.git
120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
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// Copyright (C) 2018 Jakub Melka
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//
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// This file is part of PdfForQt.
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//
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// PdfForQt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// PdfForQt 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
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#include "pdfdrawwidget.h"
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#include "pdfdrawspacecontroller.h"
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#include <QPainter>
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#include <QGridLayout>
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#include <QKeyEvent>
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namespace pdf
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{
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PDFWidget::PDFWidget(QWidget* parent) :
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QWidget(parent),
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m_drawWidget(nullptr),
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m_horizontalScrollBar(nullptr),
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m_verticalScrollBar(nullptr),
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m_proxy(nullptr)
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{
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m_drawWidget = new PDFDrawWidget(this, this);
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m_horizontalScrollBar = new QScrollBar(Qt::Horizontal, this);
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m_verticalScrollBar = new QScrollBar(Qt::Vertical, this);
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QGridLayout* layout = new QGridLayout(this);
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layout->setSpacing(0);
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layout->addWidget(m_drawWidget, 0, 0);
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layout->addWidget(m_horizontalScrollBar, 1, 0);
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layout->addWidget(m_verticalScrollBar, 0, 1);
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layout->setMargin(0);
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setLayout(layout);
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setFocusProxy(m_drawWidget);
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m_proxy = new PDFDrawWidgetProxy(this);
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m_proxy->init(this);
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}
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PDFWidget::~PDFWidget()
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{
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}
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void PDFWidget::setDocument(const PDFDocument* document)
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{
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m_proxy->setDocument(document);
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}
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PDFDrawWidget::PDFDrawWidget(PDFWidget* widget, QWidget* parent) :
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QWidget(parent),
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m_widget(widget)
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{
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setFocusPolicy(Qt::StrongFocus);
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}
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PDFDrawWidget::~PDFDrawWidget()
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{
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}
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QSize PDFDrawWidget::minimumSizeHint() const
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{
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return QSize(200, 200);
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}
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void PDFDrawWidget::paintEvent(QPaintEvent* event)
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{
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Q_UNUSED(event);
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QPainter painter(this);
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m_widget->getDrawWidgetProxy()->draw(&painter, this->rect());
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}
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void PDFDrawWidget::resizeEvent(QResizeEvent* event)
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{
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QWidget::resizeEvent(event);
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m_widget->getDrawWidgetProxy()->update();
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}
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void PDFDrawWidget::keyPressEvent(QKeyEvent* event)
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{
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QScrollBar* verticalScrollbar = m_widget->getVerticalScrollbar();
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// Vertical navigation
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if (verticalScrollbar->isVisible())
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{
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if (event->matches(QKeySequence::MoveToStartOfDocument))
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{
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verticalScrollbar->setValue(0);
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}
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else if (event->matches(QKeySequence::MoveToEndOfDocument))
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{
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verticalScrollbar->setValue(verticalScrollbar->maximum());
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}
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else if (event->matches(QKeySequence::MoveToNextPage))
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{
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verticalScrollbar->setValue(verticalScrollbar->value() + verticalScrollbar->pageStep());
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}
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}
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event->accept();
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}
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} // namespace pdf
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