mirror of https://github.com/JakubMelka/PDF4QT.git
104 lines
3.7 KiB
C++
104 lines
3.7 KiB
C++
// Copyright (C) 2021 Jakub Melka
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//
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// This file is part of Pdf4Qt.
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//
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// Pdf4Qt 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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// with the written consent of the copyright owner, any later version.
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//
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// Pdf4Qt 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 Pdf4Qt. If not, see <https://www.gnu.org/licenses/>.
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#include "pageitemdelegate.h"
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#include "pageitemmodel.h"
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#include "pdfwidgetutils.h"
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#include <QPainter>
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namespace pdfdocpage
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{
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PageItemDelegate::PageItemDelegate(PageItemModel* model, QObject* parent) :
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BaseClass(parent),
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m_model(model)
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{
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}
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PageItemDelegate::~PageItemDelegate()
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{
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}
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void PageItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
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{
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const PageGroupItem* item = m_model->getItem(index);
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if (!item)
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{
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return;
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}
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QRect rect = option.rect;
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QSize scaledSize = pdf::PDFWidgetUtils::scaleDPI(option.widget, m_pageImageSize);
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int verticalSpacing = pdf::PDFWidgetUtils::scaleDPI_y(option.widget, getVerticalSpacing());
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QRect pageBoundingRect = QRect(QPoint(rect.left() + (rect.width() - scaledSize.width()) / 2, rect.top() + verticalSpacing), scaledSize);
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// Draw page preview
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if (!item->groups.empty())
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{
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const PageGroupItem::GroupItem& groupItem = item->groups.front();
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QSize pageImageSize = groupItem.rotatedPageDimensionsMM.scaled(pageBoundingRect.size(), Qt::KeepAspectRatio).toSize();
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QRect pageImageRect(pageBoundingRect.topLeft() + QPoint((pageBoundingRect.width() - pageImageSize.width()) / 2, (pageBoundingRect.height() - pageImageSize.height()) / 2), pageImageSize);
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painter->setPen(QPen(Qt::black));
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painter->setBrush(Qt::white);
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painter->drawRect(pageImageRect);
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}
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int textOffset = pageBoundingRect.bottom() + verticalSpacing;
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QRect textRect = option.rect;
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textRect.setTop(textOffset);
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textRect.setHeight(option.fontMetrics.lineSpacing());
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painter->drawText(textRect, Qt::AlignCenter | Qt::TextSingleLine, item->groupName);
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textRect.translate(0, textRect.height());
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painter->drawText(textRect, Qt::AlignCenter | Qt::TextSingleLine, item->pagesCaption);
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if (option.state.testFlag(QStyle::State_Selected))
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{
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QColor selectedColor = option.palette.color(QPalette::Active, QPalette::Highlight);
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selectedColor.setAlphaF(0.3);
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painter->fillRect(rect, selectedColor);
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}
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}
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QSize PageItemDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const
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{
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Q_UNUSED(index);
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QSize scaledSize = pdf::PDFWidgetUtils::scaleDPI(option.widget, m_pageImageSize);
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int height = scaledSize.height() + option.fontMetrics.lineSpacing() * 2 + 2 * pdf::PDFWidgetUtils::scaleDPI_y(option.widget, getVerticalSpacing());
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int width = qMax(pdf::PDFWidgetUtils::scaleDPI_x(option.widget, 40), scaledSize.width() + 2 * pdf::PDFWidgetUtils::scaleDPI_x(option.widget, getHorizontalSpacing()));
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return QSize(width, height);
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}
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QSize PageItemDelegate::getPageImageSize() const
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{
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return m_pageImageSize;
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}
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void PageItemDelegate::setPageImageSize(const QSize& pageImageSize)
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{
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m_pageImageSize = pageImageSize;
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}
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} // namespace pdfdocpage
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