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Page item delegate

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Jakub Melka
2021-07-07 18:30:03 +02:00
parent 522413f2dc
commit bdaaa01476
7 changed files with 332 additions and 6 deletions
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Pdf4QtDocPageOrganizer/pageitemdelegate.cpp Normal file
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// Copyright (C) 2021 Jakub Melka
//
// This file is part of Pdf4Qt.
//
// Pdf4Qt is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// with the written consent of the copyright owner, any later version.
//
// Pdf4Qt is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with Pdf4Qt. If not, see <https://www.gnu.org/licenses/>.
#include "pageitemdelegate.h"
#include "pageitemmodel.h"
#include "pdfwidgetutils.h"
#include <QPainter>
namespace pdfdocpage
{
PageItemDelegate::PageItemDelegate(PageItemModel* model, QObject* parent) :
BaseClass(parent),
m_model(model)
{
}
PageItemDelegate::~PageItemDelegate()
{
}
void PageItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
const PageGroupItem* item = m_model->getItem(index);
if (!item)
{
return;
}
QRect rect = option.rect;
QSize scaledSize = pdf::PDFWidgetUtils::scaleDPI(option.widget, m_pageImageSize);
int verticalSpacing = pdf::PDFWidgetUtils::scaleDPI_y(option.widget, getVerticalSpacing());
QRect pageBoundingRect = QRect(QPoint(rect.left() + (rect.width() - scaledSize.width()) / 2, rect.top() + verticalSpacing), scaledSize);
// Draw page preview
if (!item->groups.empty())
{
const PageGroupItem::GroupItem& groupItem = item->groups.front();
QSize pageImageSize = groupItem.rotatedPageDimensionsMM.scaled(pageBoundingRect.size(), Qt::KeepAspectRatio).toSize();
QRect pageImageRect(pageBoundingRect.topLeft() + QPoint((pageBoundingRect.width() - pageImageSize.width()) / 2, (pageBoundingRect.height() - pageImageSize.height()) / 2), pageImageSize);
painter->setPen(QPen(Qt::black));
painter->setBrush(Qt::white);
painter->drawRect(pageImageRect);
}
int textOffset = pageBoundingRect.bottom() + verticalSpacing;
QRect textRect = option.rect;
textRect.setTop(textOffset);
textRect.setHeight(option.fontMetrics.lineSpacing());
painter->drawText(textRect, Qt::AlignCenter | Qt::TextSingleLine, item->groupName);
textRect.translate(0, textRect.height());
painter->drawText(textRect, Qt::AlignCenter | Qt::TextSingleLine, item->pagesCaption);
if (option.state.testFlag(QStyle::State_Selected))
{
QColor selectedColor = option.palette.color(QPalette::Active, QPalette::Highlight);
selectedColor.setAlphaF(0.3);
painter->fillRect(rect, selectedColor);
}
}
QSize PageItemDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const
{
Q_UNUSED(index);
QSize scaledSize = pdf::PDFWidgetUtils::scaleDPI(option.widget, m_pageImageSize);
int height = scaledSize.height() + option.fontMetrics.lineSpacing() * 2 + 2 * pdf::PDFWidgetUtils::scaleDPI_y(option.widget, getVerticalSpacing());
int width = qMax(pdf::PDFWidgetUtils::scaleDPI_x(option.widget, 40), scaledSize.width() + 2 * pdf::PDFWidgetUtils::scaleDPI_x(option.widget, getHorizontalSpacing()));
return QSize(height, width);
}
QSize PageItemDelegate::getPageImageSize() const
{
return m_pageImageSize;
}
void PageItemDelegate::setPageImageSize(const QSize& pageImageSize)
{
m_pageImageSize = pageImageSize;
}
} // namespace pdfdocpage