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Issue #159: Renaming applications
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Jakub Melka
305
Pdf4QtDiff/differencesdockwidget.cpp
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305
Pdf4QtDiff/differencesdockwidget.cpp
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// 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 "differencesdockwidget.h"
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#include "ui_differencesdockwidget.h"
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#include "pdfdiff.h"
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#include "pdfwidgetutils.h"
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#include <QPixmap>
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#include <QPainter>
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#include <QTreeWidgetItem>
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namespace pdfdiff
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{
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DifferenceItemDelegate::DifferenceItemDelegate(QObject* parent) :
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BaseClass(parent)
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{
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}
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void DifferenceItemDelegate::paint(QPainter* painter,
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const QStyleOptionViewItem& option,
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const QModelIndex& index) const
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{
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BaseClass::paint(painter, option, index);
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}
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QSize DifferenceItemDelegate::sizeHint(const QStyleOptionViewItem& option,
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const QModelIndex& index) const
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{
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QStyleOptionViewItem adjustedOption = option;
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if (!option.rect.isValid())
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{
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// Jakub Melka: Why this? We need to use text wrapping. Unfortunately,
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// standard delegate needs correct text rectangle (at least rectangle width),
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// for word wrap calculation. So we must manually calculate rectangle width.
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// Of course, we cant use visualRect of the tree widget, because of cyclical
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// dependence.
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const QTreeWidget* treeWidget = qobject_cast<const QTreeWidget*>(option.widget);
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int xOffset = treeWidget->columnViewportPosition(index.column());
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int height = option.fontMetrics.lineSpacing();
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int yOffset = 0;
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int width = treeWidget->columnWidth(index.column());
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int level = treeWidget->rootIsDecorated() ? 1 : 0;
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QModelIndex currentIndex = index.parent();
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while (currentIndex.isValid())
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{
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++level;
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currentIndex = currentIndex.parent();
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}
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xOffset += level * treeWidget->indentation();
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adjustedOption.rect = QRect(xOffset, yOffset, width - xOffset, height);
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}
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return BaseClass::sizeHint(adjustedOption, index);
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}
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DifferencesDockWidget::DifferencesDockWidget(QWidget* parent,
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pdf::PDFDiffResult* unfilteredDiffResult,
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pdf::PDFDiffResult* diffResult,
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pdf::PDFDiffResultNavigator* diffNavigator,
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Settings* settings) :
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QDockWidget(parent),
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ui(new Ui::DifferencesDockWidget),
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m_unfilteredDiffResult(unfilteredDiffResult),
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m_diffResult(diffResult),
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m_diffNavigator(diffNavigator),
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m_settings(settings),
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m_disableChangeSelectedResultIndex(false)
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{
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ui->setupUi(this);
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ui->differencesTreeWidget->setItemDelegate(new DifferenceItemDelegate(this));
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ui->differencesTreeWidget->setIconSize(pdf::PDFWidgetUtils::scaleDPI(ui->differencesTreeWidget, QSize(16, 16)));
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connect(diffNavigator, &pdf::PDFDiffResultNavigator::selectionChanged, this, &DifferencesDockWidget::onSelectionChanged);
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connect(ui->differencesTreeWidget, &QTreeWidget::currentItemChanged, this, &DifferencesDockWidget::onCurrentItemChanged);
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setMinimumWidth(pdf::PDFWidgetUtils::scaleDPI_x(this, 120));
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}
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DifferencesDockWidget::~DifferencesDockWidget()
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{
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delete ui;
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}
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QColor DifferencesDockWidget::getColorForIndex(size_t index) const
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{
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QColor color;
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const size_t resultIndex = index;
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if (m_diffResult->isReplaceDifference(resultIndex))
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{
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color = m_settings->colorReplaced;
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}
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else if (m_diffResult->isRemoveDifference(resultIndex))
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{
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color = m_settings->colorRemoved;
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}
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else if (m_diffResult->isAddDifference(resultIndex))
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{
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color = m_settings->colorAdded;
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}
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else if (m_diffResult->isPageMoveDifference(resultIndex))
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{
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color = m_settings->colorPageMove;
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}
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return color;
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}
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QModelIndex DifferencesDockWidget::findResultIndex(size_t index) const
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{
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QAbstractItemModel* model = ui->differencesTreeWidget->model();
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const int count = ui->differencesTreeWidget->topLevelItemCount();
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for (int i = 0; i < count; ++i)
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{
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QModelIndex parentIndex = model->index(i, 0);
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if (parentIndex.isValid())
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{
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const int childCount = model->rowCount(parentIndex);
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for (int j = 0; j < childCount; ++j)
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{
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QModelIndex childIndex = model->index(j, 0, parentIndex);
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QVariant childUserData = childIndex.data(Qt::UserRole);
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if (childUserData.isValid())
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{
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if (childUserData.toULongLong() == index)
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{
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return childIndex;
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}
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}
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}
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}
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}
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return QModelIndex();
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}
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void DifferencesDockWidget::update()
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{
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ui->differencesTreeWidget->clear();
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QList<QTreeWidgetItem*> topItems;
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QLocale locale;
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if (m_diffResult && !m_diffResult->isSame())
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{
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std::map<QRgb, QIcon> icons;
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auto getIcon = [this, &icons](QColor color)
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{
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auto it = icons.find(color.rgb());
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if (it == icons.end())
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{
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QPixmap pixmap(ui->differencesTreeWidget->iconSize());
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pixmap.fill(Qt::transparent);
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QPainter painter(&pixmap);
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painter.setPen(Qt::NoPen);
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painter.setRenderHint(QPainter::Antialiasing);
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painter.setBrush(QBrush(color));
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painter.drawEllipse(0, 0, pixmap.width(), pixmap.height());
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painter.end();
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QIcon icon(pixmap);
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it = icons.insert(std::make_pair(color.rgb(), std::move(icon))).first;
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}
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return it->second;
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};
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const size_t differenceCount = m_diffResult->getDifferencesCount();
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const size_t unfilteredDifferenceCount = m_unfilteredDiffResult->getDifferencesCount();
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const size_t hiddenDifferences = unfilteredDifferenceCount - differenceCount;
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if (hiddenDifferences > 0)
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{
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ui->infoTextLabel->setText(tr("%1 Differences (+%2 hidden)").arg(differenceCount).arg(hiddenDifferences));
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}
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else
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{
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ui->infoTextLabel->setText(tr("%1 Differences").arg(differenceCount));
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}
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pdf::PDFInteger lastLeftPageIndex = -1;
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pdf::PDFInteger lastRightPageIndex = -1;
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for (size_t i = 0; i < differenceCount; ++i)
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{
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pdf::PDFInteger pageIndexLeft = m_diffResult->getLeftPage(i);
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pdf::PDFInteger pageIndexRight = m_diffResult->getRightPage(i);
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if (lastLeftPageIndex != pageIndexLeft ||
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lastRightPageIndex != pageIndexRight ||
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topItems.empty())
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{
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// Create new top level item
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QStringList captionParts;
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captionParts << QString("#%1:").arg(topItems.size() + 1);
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if (pageIndexLeft == pageIndexRight)
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{
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captionParts << tr("Page %1").arg(locale.toString(pageIndexLeft + 1));
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}
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else
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{
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if (pageIndexLeft != -1)
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{
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captionParts << tr("Left %1").arg(locale.toString(pageIndexLeft + 1));
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}
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if (pageIndexRight != -1)
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{
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captionParts << tr("Right %1").arg(locale.toString(pageIndexRight + 1));
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}
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}
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QTreeWidgetItem* item = new QTreeWidgetItem(QStringList() << captionParts.join(" "));
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topItems << item;
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lastLeftPageIndex = pageIndexLeft;
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lastRightPageIndex = pageIndexRight;
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}
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Q_ASSERT(!topItems.isEmpty());
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QTreeWidgetItem* parent = topItems.back();
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QTreeWidgetItem* item = new QTreeWidgetItem(parent, QStringList() << m_diffResult->getMessage(i));
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item->setData(0, Qt::UserRole, QVariant(static_cast<qint64>(i)));
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QColor color = getColorForIndex(i);
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if (color.isValid())
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{
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item->setData(0, Qt::DecorationRole, getIcon(color));
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}
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}
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}
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else
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{
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ui->infoTextLabel->setText(tr("No Differences Found!"));
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}
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ui->differencesTreeWidget->addTopLevelItems(topItems);
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ui->differencesTreeWidget->expandAll();
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}
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void DifferencesDockWidget::onSelectionChanged(size_t currentIndex)
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{
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if (m_disableChangeSelectedResultIndex)
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{
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return;
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}
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pdf::PDFTemporaryValueChange guard(&m_disableChangeSelectedResultIndex, true);
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QModelIndex index = findResultIndex(currentIndex);
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if (index.isValid())
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{
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ui->differencesTreeWidget->scrollTo(index);
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ui->differencesTreeWidget->setCurrentIndex(index);
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}
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}
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void DifferencesDockWidget::onCurrentItemChanged(QTreeWidgetItem* current, QTreeWidgetItem* previous)
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{
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Q_UNUSED(previous);
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if (m_disableChangeSelectedResultIndex || !current)
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{
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return;
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}
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pdf::PDFTemporaryValueChange guard(&m_disableChangeSelectedResultIndex, true);
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QVariant childUserData = current->data(0, Qt::UserRole);
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if (childUserData.isValid())
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{
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m_diffNavigator->select(childUserData.toULongLong());
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}
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}
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} // namespace pdfdiff
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