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mainwindow.cpp
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/*
Copyright © 2008-13 Qtrac Ltd. All rights reserved.
This program or module is free software: you can redistribute it
and/or modify it under the terms of the GNU General Public License
as published by the Free Software Foundation, either version 2 of
the License, or (at your option) any later version. This program 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 General Public License
for more details.
*/
#include "aboutform.hpp"
#include "generic.hpp"
#include "helpform.hpp"
#include "label.hpp"
#include "lineedit.hpp"
#include "optionsform.hpp"
#include "mainwindow.hpp"
#include "sequence_matcher.hpp"
#include "textitem.hpp"
#ifdef DEBUG
#include <QtDebug>
#endif
#include <QApplication>
#include <QBoxLayout>
#include <QCheckBox>
#include <QComboBox>
#include <QDir>
#include <QDockWidget>
#include <QEvent>
#include <QFileDialog>
#include <QGroupBox>
#include <QLabel>
#include <QLineEdit>
#include <QMessageBox>
#include <QPainter>
#include <QPixmapCache>
#include <QPlainTextEdit>
#include <QPrinter>
#include <QPushButton>
#include <QRadioButton>
#include <QScrollArea>
#include <QScrollBar>
#include <QSettings>
#include <QSpinBox>
#include <QSplitter>
MainWindow::MainWindow(const Debug debug,
const InitialComparisonMode comparisonMode,
const QString &filename1, const QString &filename2,
const QString &language, QWidget *parent)
: QMainWindow(parent),
controlDockArea(Qt::RightDockWidgetArea),
actionDockArea(Qt::RightDockWidgetArea),
marginsDockArea(Qt::RightDockWidgetArea),
zoningDockArea(Qt::RightDockWidgetArea),
logDockArea(Qt::RightDockWidgetArea), cancel(false),
saveAll(true), savePages(SaveBothPages), language(language),
debug(debug), aboutForm(0), helpForm(0)
{
currentPath = QDir::homePath();
QSettings settings;
pen.setStyle(Qt::NoPen);
pen.setColor(Qt::red);
pen = settings.value("Outline", pen).value<QPen>();
brush.setColor(pen.color());
brush.setStyle(Qt::SolidPattern);
brush = settings.value("Fill", brush).value<QBrush>();
showToolTips = settings.value("ShowToolTips", true).toBool();
combineTextHighlighting = settings.value("CombineTextHighlighting",
true).toBool();
QPixmapCache::setCacheLimit(1000 *
qBound(1, settings.value("CacheSizeMB", 25).toInt(), 100));
createWidgets(filename1, filename2);
createCentralArea();
createDockWidgets();
createConnections();
restoreGeometry(settings.value("MainWindow/Geometry").toByteArray());
restoreState(settings.value("MainWindow/State").toByteArray());
controlDockLocationChanged(static_cast<Qt::DockWidgetArea>(
settings.value("MainWindow/ControlDockArea",
static_cast<int>(controlDockArea)).toInt()));
actionDockLocationChanged(static_cast<Qt::DockWidgetArea>(
settings.value("MainWindow/ActionDockArea",
static_cast<int>(actionDockArea)).toInt()));
zoningDockLocationChanged(static_cast<Qt::DockWidgetArea>(
settings.value("MainWindow/ZoningDockArea",
static_cast<int>(zoningDockArea)).toInt()));
marginsDockLocationChanged(static_cast<Qt::DockWidgetArea>(
settings.value("MainWindow/MarginsDockArea",
static_cast<int>(marginsDockArea)).toInt()));
controlDockWidget->resize(controlDockWidget->minimumSizeHint());
actionDockWidget->resize(actionDockWidget->minimumSizeHint());
zoningDockWidget->resize(zoningDockWidget->minimumSizeHint());
marginsDockWidget->resize(marginsDockWidget->minimumSizeHint());
//logDockWidget->resize(logDockWidget->minimumSizeHint());
setWindowTitle(tr("DiffPDF"));
setWindowIcon(QIcon(":/icon.png"));
compareComboBox->setCurrentIndex(comparisonMode);
QMetaObject::invokeMethod(this, "initialize", Qt::QueuedConnection,
Q_ARG(QString, filename1),
Q_ARG(QString, filename2));
}
void MainWindow::createWidgets(const QString &filename1,
const QString &filename2)
{
setFile1Button = new QPushButton(tr("File #&1..."));
setFile1Button->setToolTip(tr("<p>Choose the first (left hand) file "
"to be compared."));
filename1LineEdit = new LineEdit;
filename1LineEdit->setToolTip(tr("The first (left hand) file."));
filename1LineEdit->setAlignment(Qt::AlignVCenter|Qt::AlignRight);
filename1LineEdit->setMinimumWidth(100);
filename1LineEdit->setText(filename1);
setFile2Button = new QPushButton(tr("File #&2..."));
setFile2Button->setToolTip(tr("<p>Choose the second (right hand) file "
"to be compared."));
filename2LineEdit = new LineEdit;
filename2LineEdit->setToolTip(tr("The second (right hand) file."));
filename2LineEdit->setAlignment(Qt::AlignVCenter|Qt::AlignRight);
filename2LineEdit->setMinimumWidth(100);
filename2LineEdit->setText(filename2);
comparePages1Label = new QLabel(tr("Pa&ges:"));
pages1LineEdit = new QLineEdit;
comparePages1Label->setBuddy(pages1LineEdit);
pages1LineEdit->setToolTip(tr("<p>Pages can be specified using ranges "
"such as 1-10, and multiple ranges can be used, e.g., "
"1-10, 12-15, 20, 22, 35-39. This makes it "
"straighforward to compare similar documents where one "
"has one or more additional pages.<p>For example, if "
"file1.pdf has pages 1-30 and file2.pdf has pages 1-31 "
"with the extra page being page 14, the two page ranges "
"would be set to 1-30 for file1.pdf and 1-13, 15-31 for "
"file2.pdf."));
comparePages2Label = new QLabel(tr("&Pages:"));
pages2LineEdit = new QLineEdit;
comparePages2Label->setBuddy(pages2LineEdit);
pages2LineEdit->setToolTip(pages1LineEdit->toolTip());
compareButton = new QPushButton(tr("&Compare"));
compareButton->setEnabled(false);
compareButton->setToolTip(tr("<p>Click to compare (or re-compare) "
"the documents—or to cancel a comparison that's "
"in progress."));
compareComboBox = new QComboBox;
compareComboBox->addItems(QStringList() << tr("Appearance")
<< tr("Characters") << tr("Words"));
compareComboBox->setToolTip(
tr("<p>If the <b>Words</b> comparison "
"mode is chosen, then each page's text is compared "
"word by word (best for alphabetic languages like "
"English). "
"If the <b>Characters</b> comparison mode is chosen, "
"then each page's text is compared character by "
"character (best for logographic languages like Chinese "
"and Japanese). "
"If the <b>Appearance</b> comparison mode is chosen "
"then each page's visual appearance is compared. "
"Comparing appearance can be slow for large documents "
"and can also produce false positives—but is "
"absolutely precise."));
compareLabel = new QLabel(tr("Co&mpare:"));
compareLabel->setBuddy(compareComboBox);
viewDiffLabel = new QLabel(tr("&View:"));
viewDiffLabel->setToolTip(tr("<p>Shows each pair of pages which "
"are different. The comparison is textual unless the "
"<b>Appearance</b> comparison mode is chosen, in "
"which case the comparison is done visually. "
"Visual differences can occur if a paragraph is "
"formated differently or if an embedded diagram or "
"image has changed."));
viewDiffComboBox = new QComboBox;
viewDiffComboBox->addItem(tr("(Not viewing)"));
viewDiffLabel->setBuddy(viewDiffComboBox);
viewDiffComboBox->setToolTip(viewDiffLabel->toolTip());
showLabel = new QLabel(tr("S&how:"));
showLabel->setToolTip(tr("<p>In show <b>Highlighting</b> mode the "
"pages are shown side by side with their differences "
"highlighted. All the other modes are composition "
"modes which show the first PDF as-is and the "
"composition (blend) of the two PDFs."));
showComboBox = new QComboBox;
showComboBox->addItem(tr("%1Highlighting%2")
.arg(QChar(0xAB)).arg(QChar(0xBB)), -1);
showComboBox->addItem(tr("Not Src Xor Dest"),
QPainter::RasterOp_NotSourceXorDestination);
showComboBox->addItem(tr("Difference"),
QPainter::CompositionMode_Difference);
showComboBox->addItem(tr("Exclusion"),
QPainter::CompositionMode_Exclusion);
showComboBox->addItem(tr("Src Xor Dest"),
QPainter::RasterOp_SourceXorDestination);
showLabel->setBuddy(showComboBox);
showComboBox->setToolTip(showLabel->toolTip());
previousButton = new QPushButton(tr("Previo&us"));
previousButton->setToolTip(
"<p>Navigate to the previous pair of pages.");
#if QT_VERSION >= 0x040600
previousButton->setIcon(QIcon(":/left.png"));
#endif
nextButton = new QPushButton(tr("Ne&xt"));
nextButton->setToolTip("<p>Navigate to the next pair of pages.");
#if QT_VERSION >= 0x040600
nextButton->setIcon(QIcon(":/right.png"));
#endif
zoomLabel = new QLabel(tr("&Zoom:"));
zoomLabel->setToolTip(tr("<p>Determines the scale at which the "
"pages are shown."));
zoomSpinBox = new QSpinBox;
zoomLabel->setBuddy(zoomSpinBox);
zoomSpinBox->setRange(20, 800);
zoomSpinBox->setSuffix(tr(" %"));
zoomSpinBox->setSingleStep(5);
QSettings settings;
zoomSpinBox->setValue(settings.value("Zoom", 100).toInt());
zoomSpinBox->setToolTip(zoomLabel->toolTip());
zoningGroupBox = new QGroupBox(tr("Zo&ning"));
zoningGroupBox->setToolTip(tr("<p>Zoning is a computationally "
"expensive experimental mode that can reduce or "
"eliminate false positives particularly for pages "
"that have tables or that mix alphabetic and "
"logographic languages—it can also increase "
"false positives! Zoning only applies to text "
"comparisons."));
zoningGroupBox->setCheckable(true);
zoningGroupBox->setChecked(false);
columnsLabel = new QLabel(tr("Co&lumns:"));
columnsSpinBox = new QSpinBox;
columnsSpinBox->setRange(1, 16);
columnsSpinBox->setValue(settings.value("Columns", 1).toInt());
columnsSpinBox->setAlignment(Qt::AlignVCenter|Qt::AlignRight);
columnsSpinBox->setToolTip(tr("<p>Use this to tell DiffPDF how "
"many columns the page has; this should improve the "
"zoning."));
columnsLabel->setBuddy(columnsSpinBox);
toleranceRLabel = new QLabel(tr("Tolerance/&R:"));
toleranceRSpinBox = new QSpinBox;
toleranceRSpinBox->setRange(4, 144);
toleranceRSpinBox->setValue(settings.value("Tolerance/R", 8).toInt());
toleranceRSpinBox->setAlignment(Qt::AlignVCenter|Qt::AlignRight);
toleranceRSpinBox->setToolTip(tr("<p>This is the maximum distance "
"between text (word) rectangles for the rectangles to "
"appear in the same zone."));
toleranceRLabel->setBuddy(toleranceRSpinBox);
toleranceYLabel = new QLabel(tr("Tolerance/&Y:"));
toleranceYSpinBox = new QSpinBox;
toleranceYSpinBox->setRange(0, 32);
toleranceYSpinBox->setValue(settings.value("Tolerance/Y", 10).toInt());
toleranceYSpinBox->setAlignment(Qt::AlignVCenter|Qt::AlignRight);
toleranceYSpinBox->setToolTip(tr("<p>Text position <i>y</i> "
"coordinates are rounded to the nearest Tolerance/Y "
"value when zoning."));
toleranceYLabel->setBuddy(toleranceYSpinBox);
showZonesCheckBox = new QCheckBox(tr("Sho&w Zones"));
showZonesCheckBox->setToolTip(tr("<p>This shows the zones that are "
"being used and may be helpful when adjusting "
"tolerances. (Its original purpose was for debugging.)"));
marginsGroupBox = new QGroupBox(tr("&Exclude Margins"));
marginsGroupBox->setToolTip(tr("<p>If this is checked, anything "
"outside non-zero margins is ignored when comparing."));
marginsGroupBox->setCheckable(true);
marginsGroupBox->setChecked(settings.value("Margins/Exclude",
false).toBool());
topMarginLabel = new QLabel(tr("&Top:"));
topMarginSpinBox = new QSpinBox;
topMarginSpinBox->setSuffix(" pt");
topMarginSpinBox->setValue(settings.value("Margins/Top", 0).toInt());
topMarginSpinBox->setAlignment(Qt::AlignVCenter|Qt::AlignRight);
topMarginSpinBox->setToolTip(tr("<p>The top margin in points. "
"Anything above this will be ignored."));
topMarginLabel->setBuddy(topMarginSpinBox);
bottomMarginLabel = new QLabel(tr("&Bottom:"));
bottomMarginSpinBox = new QSpinBox;
bottomMarginSpinBox->setSuffix(" pt");
bottomMarginSpinBox->setValue(settings.value("Margins/Bottom", 0)
.toInt());
bottomMarginSpinBox->setAlignment(Qt::AlignVCenter|Qt::AlignRight);
bottomMarginSpinBox->setToolTip(tr("<p>The bottom margin in points. "
"Anything below this will be ignored."));
bottomMarginLabel->setBuddy(bottomMarginSpinBox);
leftMarginLabel = new QLabel(tr("Le&ft:"));
leftMarginSpinBox = new QSpinBox;
leftMarginSpinBox->setSuffix(" pt");
leftMarginSpinBox->setValue(settings.value("Margins/Left", 0).toInt());
leftMarginSpinBox->setAlignment(Qt::AlignVCenter|Qt::AlignRight);
leftMarginSpinBox->setToolTip(tr("<p>The left margin in points. "
"Anything left of this will be ignored."));
leftMarginLabel->setBuddy(leftMarginSpinBox);
rightMarginLabel = new QLabel(tr("R&ight:"));
rightMarginSpinBox = new QSpinBox;
rightMarginSpinBox->setSuffix(" pt");
rightMarginSpinBox->setValue(settings.value("Margins/Right", 0)
.toInt());
rightMarginSpinBox->setAlignment(Qt::AlignVCenter|Qt::AlignRight);
rightMarginSpinBox->setToolTip(tr("<p>The right margin in points. "
"Anything right of this will be ignored."));
rightMarginLabel->setBuddy(rightMarginSpinBox);
statusLabel = new QLabel(tr("Choose files..."));
statusLabel->setFrameStyle(QFrame::StyledPanel|QFrame::Sunken);
statusLabel->setMaximumHeight(statusLabel->minimumSizeHint().height());
optionsButton = new QPushButton(tr("&Options..."));
optionsButton->setToolTip(tr("Click to customize the application."));
saveButton = new QPushButton(tr("&Save As..."));
saveButton->setToolTip(tr("Save the differences."));
helpButton = new QPushButton(tr("Help"));
helpButton->setShortcut(tr("F1"));
helpButton->setToolTip(tr("Click for basic help."));
aboutButton = new QPushButton(tr("&About"));
aboutButton->setToolTip(tr("Click for copyright and credits."));
quitButton = new QPushButton(tr("&Quit"));
quitButton->setToolTip(tr("Click to terminate the application."));
page1Label = new Label;
page1Label->setAlignment(Qt::AlignTop|Qt::AlignLeft);
page1Label->setToolTip(tr("<p>Shows the first (left hand) document's "
"page that corresponds to the page shown in the "
"View Difference combobox."));
page2Label = new Label;
page2Label->setAlignment(Qt::AlignTop|Qt::AlignLeft);
page2Label->setToolTip(tr("<p>Shows the second (right hand) "
"document's page that corresponds to the page shown in "
"the View Difference combobox."));
logEdit = new QPlainTextEdit;
QList<QWidget*> widgets;
widgets << setFile1Button << filename1LineEdit << pages1LineEdit
<< page1Label << setFile2Button << filename2LineEdit
<< pages2LineEdit << page2Label << compareButton
<< compareComboBox << viewDiffLabel << viewDiffComboBox
<< showLabel << showComboBox << zoomLabel << zoomSpinBox
<< optionsButton << zoningGroupBox << columnsLabel
<< columnsSpinBox << toleranceRLabel << toleranceRSpinBox
<< toleranceYLabel << toleranceYSpinBox << marginsGroupBox
<< topMarginLabel << topMarginSpinBox << bottomMarginSpinBox
<< bottomMarginLabel << leftMarginLabel << leftMarginSpinBox
<< rightMarginLabel << rightMarginSpinBox << saveButton
<< helpButton << aboutButton << quitButton << logEdit
<< previousButton << nextButton << showZonesCheckBox;
foreach (QWidget *widget, widgets)
if (!widget->toolTip().isEmpty())
widget->installEventFilter(this);
}
void MainWindow::createCentralArea()
{
QHBoxLayout *topLeftLayout = new QHBoxLayout;
topLeftLayout->addWidget(setFile1Button);
topLeftLayout->addWidget(filename1LineEdit, 3);
topLeftLayout->addWidget(comparePages1Label);
topLeftLayout->addWidget(pages1LineEdit, 2);
area1 = new QScrollArea;
area1->setWidget(page1Label);
area1->setWidgetResizable(true);
QVBoxLayout *leftLayout = new QVBoxLayout;
leftLayout->addLayout(topLeftLayout);
leftLayout->addWidget(area1, 1);
QWidget *leftWidget = new QWidget;
leftWidget->setLayout(leftLayout);
QHBoxLayout *topRightLayout = new QHBoxLayout;
topRightLayout->addWidget(setFile2Button);
topRightLayout->addWidget(filename2LineEdit, 3);
topRightLayout->addWidget(comparePages2Label);
topRightLayout->addWidget(pages2LineEdit, 2);
area2 = new QScrollArea;
area2->setWidget(page2Label);
area2->setWidgetResizable(true);
QVBoxLayout *rightLayout = new QVBoxLayout;
rightLayout->addLayout(topRightLayout);
rightLayout->addWidget(area2, 1);
QWidget *rightWidget = new QWidget;
rightWidget->setLayout(rightLayout);
splitter = new QSplitter(Qt::Horizontal);
splitter->addWidget(leftWidget);
splitter->addWidget(rightWidget);
QSettings settings;
splitter->restoreState(settings.value("MainWindow/ViewSplitter")
.toByteArray());
setCentralWidget(splitter);
}
void MainWindow::createDockWidgets()
{
setTabPosition(Qt::LeftDockWidgetArea|Qt::RightDockWidgetArea,
QTabWidget::North);
setTabPosition(Qt::TopDockWidgetArea|Qt::BottomDockWidgetArea,
QTabWidget::West);
QDockWidget::DockWidgetFeatures features =
QDockWidget::DockWidgetMovable|
QDockWidget::DockWidgetFloatable;
controlDockWidget = new QDockWidget(tr("Controls"), this);
controlDockWidget->setObjectName("Controls");
controlDockWidget->setFeatures(features);
controlLayout = new QBoxLayout(QBoxLayout::TopToBottom);
compareLayout = new QHBoxLayout;
compareLayout->addWidget(compareLabel);
compareLayout->addWidget(compareComboBox, 1);
controlLayout->addLayout(compareLayout);
QHBoxLayout *viewLayout = new QHBoxLayout;
viewLayout->addWidget(viewDiffLabel);
viewLayout->addWidget(viewDiffComboBox, 1);
controlLayout->addLayout(viewLayout);
QHBoxLayout *showLayout = new QHBoxLayout;
showLayout->addWidget(showLabel);
showLayout->addWidget(showComboBox, 1);
controlLayout->addLayout(showLayout);
QHBoxLayout *navigationLayout = new QHBoxLayout;
navigationLayout->addWidget(previousButton);
navigationLayout->addWidget(nextButton);
controlLayout->addLayout(navigationLayout);
QHBoxLayout *zoomLayout = new QHBoxLayout;
zoomLayout->addWidget(zoomLabel);
zoomLayout->addWidget(zoomSpinBox);
controlLayout->addLayout(zoomLayout);
controlLayout->addWidget(statusLabel);
controlLayout->addStretch();
QWidget *widget = new QWidget;
widget->setLayout(controlLayout);
controlDockWidget->setWidget(widget);
addDockWidget(controlDockArea, controlDockWidget);
actionDockWidget = new QDockWidget(tr("Actions"), this);
actionDockWidget->setObjectName("Actions");
actionDockWidget->setFeatures(features);
actionLayout = new QBoxLayout(QBoxLayout::TopToBottom);
actionLayout->addWidget(compareButton);
QHBoxLayout *optionLayout = new QHBoxLayout;
optionLayout->addWidget(optionsButton);
optionLayout->addWidget(saveButton);
actionLayout->addLayout(optionLayout);
QHBoxLayout *helpLayout = new QHBoxLayout;
helpLayout->addWidget(helpButton);
helpLayout->addWidget(aboutButton);
actionLayout->addLayout(helpLayout);
actionLayout->addWidget(quitButton);
actionLayout->addStretch();
widget = new QWidget;
widget->setLayout(actionLayout);
actionDockWidget->setWidget(widget);
addDockWidget(actionDockArea, actionDockWidget);
marginsDockWidget = new QDockWidget(tr("Margins"), this);
marginsDockWidget->setObjectName("Margins");
marginsDockWidget->setFeatures(features|
QDockWidget::DockWidgetClosable);
marginsLayout = new QBoxLayout(QBoxLayout::TopToBottom);
QHBoxLayout *topMarginLayout = new QHBoxLayout;
topMarginLayout->addWidget(topMarginLabel);
topMarginLayout->addWidget(topMarginSpinBox);
marginsLayout->addLayout(topMarginLayout);
QHBoxLayout *bottomMarginLayout = new QHBoxLayout;
bottomMarginLayout->addWidget(bottomMarginLabel);
bottomMarginLayout->addWidget(bottomMarginSpinBox);
marginsLayout->addLayout(bottomMarginLayout);
QHBoxLayout *leftMarginLayout = new QHBoxLayout;
leftMarginLayout->addWidget(leftMarginLabel);
leftMarginLayout->addWidget(leftMarginSpinBox);
marginsLayout->addLayout(leftMarginLayout);
QHBoxLayout *rightMarginLayout = new QHBoxLayout;
rightMarginLayout->addWidget(rightMarginLabel);
rightMarginLayout->addWidget(rightMarginSpinBox);
marginsLayout->addLayout(rightMarginLayout);
marginsLayout->addStretch();
marginsGroupBox->setLayout(marginsLayout);
marginsDockWidget->setWidget(marginsGroupBox);
addDockWidget(marginsDockArea, marginsDockWidget);
zoningDockWidget = new QDockWidget(tr("Zoning"), this);
zoningDockWidget->setObjectName("Zoning");
zoningDockWidget->setFeatures(features|
QDockWidget::DockWidgetClosable);
zoningLayout = new QBoxLayout(QBoxLayout::TopToBottom);
QHBoxLayout *columnLayout = new QHBoxLayout;
columnLayout->addWidget(columnsLabel);
columnLayout->addWidget(columnsSpinBox);
zoningLayout->addLayout(columnLayout);
QHBoxLayout *toleranceLayout1 = new QHBoxLayout;
toleranceLayout1->addWidget(toleranceRLabel);
toleranceLayout1->addWidget(toleranceRSpinBox);
zoningLayout->addLayout(toleranceLayout1);
QHBoxLayout *toleranceLayout2 = new QHBoxLayout;
toleranceLayout2->addWidget(toleranceYLabel);
toleranceLayout2->addWidget(toleranceYSpinBox);
zoningLayout->addLayout(toleranceLayout2);
zoningLayout->addWidget(showZonesCheckBox);
zoningLayout->addStretch();
zoningGroupBox->setLayout(zoningLayout);
zoningDockWidget->setWidget(zoningGroupBox);
addDockWidget(zoningDockArea, zoningDockWidget);
logDockWidget = new QDockWidget(tr("Log"), this);
logDockWidget->setObjectName("Log");
logDockWidget->setFeatures(features|QDockWidget::DockWidgetClosable);
logDockWidget->setWidget(logEdit);
addDockWidget(Qt::RightDockWidgetArea, logDockWidget);
tabifyDockWidget(marginsDockWidget, controlDockWidget);
tabifyDockWidget(logDockWidget, zoningDockWidget);
tabifyDockWidget(zoningDockWidget, actionDockWidget);
}
void MainWindow::createConnections()
{
connect(area1->verticalScrollBar(), SIGNAL(valueChanged(int)),
area2->verticalScrollBar(), SLOT(setValue(int)));
connect(area2->verticalScrollBar(), SIGNAL(valueChanged(int)),
area1->verticalScrollBar(), SLOT(setValue(int)));
connect(area1->horizontalScrollBar(), SIGNAL(valueChanged(int)),
area2->horizontalScrollBar(), SLOT(setValue(int)));
connect(area2->horizontalScrollBar(), SIGNAL(valueChanged(int)),
area1->horizontalScrollBar(), SLOT(setValue(int)));
connect(filename1LineEdit, SIGNAL(textEdited(const QString&)),
this, SLOT(updateUi()));
connect(filename1LineEdit,
SIGNAL(filenamesDropped(const QStringList&)),
this, SLOT(setFiles1(const QStringList&)));
connect(filename2LineEdit, SIGNAL(textEdited(const QString&)),
this, SLOT(updateUi()));
connect(filename2LineEdit,
SIGNAL(filenamesDropped(const QStringList&)),
this, SLOT(setFiles2(const QStringList&)));
connect(page1Label, SIGNAL(filenamesDropped(const QStringList&)),
this, SLOT(setFiles1(const QStringList&)));
connect(page2Label, SIGNAL(filenamesDropped(const QStringList&)),
this, SLOT(setFiles2(const QStringList&)));
connect(compareComboBox, SIGNAL(currentIndexChanged(int)),
this, SLOT(updateUi()));
connect(compareComboBox, SIGNAL(currentIndexChanged(int)),
this, SLOT(updateViews()));
connect(viewDiffComboBox, SIGNAL(currentIndexChanged(int)),
this, SLOT(updateViews(int)));
connect(viewDiffComboBox, SIGNAL(currentIndexChanged(int)),
this, SLOT(updateUi()));
connect(showComboBox, SIGNAL(currentIndexChanged(int)),
this, SLOT(updateViews()));
connect(previousButton, SIGNAL(clicked()),
this, SLOT(previousPages()));
connect(nextButton, SIGNAL(clicked()), this, SLOT(nextPages()));
connect(setFile1Button, SIGNAL(clicked()), this, SLOT(setFile1()));
connect(setFile2Button, SIGNAL(clicked()), this, SLOT(setFile2()));
connect(compareButton, SIGNAL(clicked()), this, SLOT(compare()));
connect(zoomSpinBox, SIGNAL(valueChanged(int)),
this, SLOT(updateViews()));
connect(zoningGroupBox, SIGNAL(toggled(bool)),
this, SLOT(updateUi()));
connect(zoningGroupBox, SIGNAL(toggled(bool)),
this, SLOT(updateViews()));
connect(columnsSpinBox, SIGNAL(valueChanged(int)),
this, SLOT(updateViews()));
connect(toleranceRSpinBox, SIGNAL(valueChanged(int)),
this, SLOT(updateViews()));
connect(toleranceYSpinBox, SIGNAL(valueChanged(int)),
this, SLOT(updateViews()));
connect(showZonesCheckBox, SIGNAL(toggled(bool)),
this, SLOT(updateViews()));
connect(marginsGroupBox, SIGNAL(toggled(bool)),
this, SLOT(updateUi()));
connect(marginsGroupBox, SIGNAL(toggled(bool)),
this, SLOT(updateViews()));
connect(leftMarginSpinBox, SIGNAL(valueChanged(int)),
this, SLOT(updateViews()));
connect(rightMarginSpinBox, SIGNAL(valueChanged(int)),
this, SLOT(updateViews()));
connect(topMarginSpinBox, SIGNAL(valueChanged(int)),
this, SLOT(updateViews()));
connect(bottomMarginSpinBox, SIGNAL(valueChanged(int)),
this, SLOT(updateViews()));
connect(page1Label, SIGNAL(clicked(const QPoint&)),
this, SLOT(setAMargin(const QPoint&)));
connect(page2Label, SIGNAL(clicked(const QPoint&)),
this, SLOT(setAMargin(const QPoint&)));
connect(optionsButton, SIGNAL(clicked()), this, SLOT(options()));
connect(saveButton, SIGNAL(clicked()), this, SLOT(save()));
connect(helpButton, SIGNAL(clicked()), this, SLOT(help()));
connect(aboutButton, SIGNAL(clicked()), this, SLOT(about()));
connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
connect(controlDockWidget,
SIGNAL(dockLocationChanged(Qt::DockWidgetArea)),
this, SLOT(controlDockLocationChanged(Qt::DockWidgetArea)));
connect(actionDockWidget,
SIGNAL(dockLocationChanged(Qt::DockWidgetArea)),
this, SLOT(actionDockLocationChanged(Qt::DockWidgetArea)));
connect(zoningDockWidget,
SIGNAL(dockLocationChanged(Qt::DockWidgetArea)),
this, SLOT(zoningDockLocationChanged(Qt::DockWidgetArea)));
connect(marginsDockWidget,
SIGNAL(dockLocationChanged(Qt::DockWidgetArea)),
this, SLOT(marginsDockLocationChanged(Qt::DockWidgetArea)));
connect(controlDockWidget, SIGNAL(topLevelChanged(bool)),
this, SLOT(controlTopLevelChanged(bool)));
connect(actionDockWidget, SIGNAL(topLevelChanged(bool)),
this, SLOT(actionTopLevelChanged(bool)));
connect(zoningDockWidget, SIGNAL(topLevelChanged(bool)),
this, SLOT(zoningTopLevelChanged(bool)));
connect(marginsDockWidget, SIGNAL(topLevelChanged(bool)),
this, SLOT(marginsTopLevelChanged(bool)));
connect(logDockWidget, SIGNAL(topLevelChanged(bool)),
this, SLOT(logTopLevelChanged(bool)));
}
void MainWindow::initialize(const QString &filename1,
const QString &filename2)
{
if (!filename1.isEmpty()) {
setFile1(filename1);
setFile2Button->setFocus();
if (!filename2.isEmpty()) {
setFile2(filename2);
compare();
}
}
else
updateUi();
}
void MainWindow::updateUi()
{
compareButton->setEnabled(!filename1LineEdit->text().isEmpty() &&
!filename2LineEdit->text().isEmpty());
saveButton->setEnabled(viewDiffComboBox->count() > 1);
if (!showZonesCheckBox->isEnabled())
showZonesCheckBox->setChecked(false);
if (compareComboBox->currentIndex() != CompareAppearance)
showComboBox->setCurrentIndex(0);
showComboBox->setEnabled(compareComboBox->currentIndex() ==
CompareAppearance);
QPushButton *button = qobject_cast<QPushButton*>(focusWidget());
bool enableNavigationButton = (button == previousButton ||
button == nextButton);
previousButton->setEnabled(viewDiffComboBox->count() > 1 &&
viewDiffComboBox->currentIndex() > 0);
nextButton->setEnabled(viewDiffComboBox->count() > 1 &&
viewDiffComboBox->currentIndex() + 1 <
viewDiffComboBox->count());
if (enableNavigationButton && !(previousButton->isEnabled() &&
nextButton->isEnabled())) {
if (previousButton->isEnabled())
previousButton->setFocus();
else
nextButton->setFocus();
}
if (marginsGroupBox->isChecked()) {
page1Label->setCursor(Qt::PointingHandCursor);
page2Label->setCursor(Qt::PointingHandCursor);
}
else {
page1Label->setCursor(Qt::ArrowCursor);
page2Label->setCursor(Qt::ArrowCursor);
}
}
void MainWindow::controlDockLocationChanged(Qt::DockWidgetArea area)
{
if (area == Qt::TopDockWidgetArea ||
area == Qt::BottomDockWidgetArea) {
controlLayout->setDirection(QBoxLayout::LeftToRight);
}
else {
controlLayout->setDirection(QBoxLayout::TopToBottom);
}
controlDockArea = area;
}
void MainWindow::actionDockLocationChanged(Qt::DockWidgetArea area)
{
if (area == Qt::TopDockWidgetArea ||
area == Qt::BottomDockWidgetArea)
actionLayout->setDirection(QBoxLayout::LeftToRight);
else
actionLayout->setDirection(QBoxLayout::TopToBottom);
actionDockArea = area;
}
void MainWindow::zoningDockLocationChanged(Qt::DockWidgetArea area)
{
if (area == Qt::TopDockWidgetArea ||
area == Qt::BottomDockWidgetArea)
zoningLayout->setDirection(QBoxLayout::LeftToRight);
else
zoningLayout->setDirection(QBoxLayout::TopToBottom);
zoningDockArea = area;
}
void MainWindow::marginsDockLocationChanged(Qt::DockWidgetArea area)
{
if (area == Qt::TopDockWidgetArea ||
area == Qt::BottomDockWidgetArea)
marginsLayout->setDirection(QBoxLayout::LeftToRight);
else
marginsLayout->setDirection(QBoxLayout::TopToBottom);
marginsDockArea = area;
}
void MainWindow::controlTopLevelChanged(bool floating)
{
controlLayout->setDirection(floating ? QBoxLayout::TopToBottom
: QBoxLayout::LeftToRight);
if (QWidget *widget = static_cast<QWidget*>(controlLayout->parent()))
widget->setFixedSize(floating ? widget->minimumSizeHint()
: QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
controlDockWidget->setWindowTitle(floating ? tr("DiffPDF — Controls")
: tr("Controls"));
}
void MainWindow::actionTopLevelChanged(bool floating)
{
actionLayout->setDirection(floating ? QBoxLayout::TopToBottom
: QBoxLayout::LeftToRight);
if (QWidget *widget = static_cast<QWidget*>(actionLayout->parent()))
widget->setFixedSize(floating ? widget->minimumSizeHint()
: QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
actionDockWidget->setWindowTitle(floating ? tr("DiffPDF — Actions")
: tr("Actions"));
}
void MainWindow::zoningTopLevelChanged(bool floating)
{
zoningLayout->setDirection(floating ? QBoxLayout::TopToBottom
: QBoxLayout::LeftToRight);
if (QWidget *widget = static_cast<QWidget*>(zoningLayout->parent()))
widget->setFixedSize(floating ? widget->minimumSizeHint()
: QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
zoningDockWidget->setWindowTitle(floating ? tr("DiffPDF — Zoning")
: tr("Zoning"));
}
void MainWindow::marginsTopLevelChanged(bool floating)
{
marginsLayout->setDirection(floating ? QBoxLayout::TopToBottom
: QBoxLayout::LeftToRight);
if (QWidget *widget = static_cast<QWidget*>(marginsLayout->parent()))
widget->setFixedSize(floating ? widget->minimumSizeHint()
: QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
marginsDockWidget->setWindowTitle(floating ? tr("DiffPDF — Margins")
: tr("Margins"));
}
void MainWindow::logTopLevelChanged(bool floating)
{
logDockWidget->setWindowTitle(floating ? tr("DiffPDF — Log")
: tr("Log"));
}
void MainWindow::previousPages()
{
int i = viewDiffComboBox->currentIndex();
if (i > 0)
viewDiffComboBox->setCurrentIndex(i - 1);
}
void MainWindow::nextPages()
{
int i = viewDiffComboBox->currentIndex();
if (i + 1 < viewDiffComboBox->count())
viewDiffComboBox->setCurrentIndex(i + 1);
}
void MainWindow::updateViews(int index)
{
if (index == 0) {
page1Label->clear();
page2Label->clear();
return;
}
else if (index == -1)
index = viewDiffComboBox->currentIndex();
PagePair pair = viewDiffComboBox->itemData(index).value<PagePair>();
if (pair.isNull())
return;
QString filename1 = filename1LineEdit->text();
PdfDocument pdf1 = getPdf(filename1);
if (!pdf1)
return;
PdfPage page1(pdf1->page(pair.left));
if (!page1)
return;
QString filename2 = filename2LineEdit->text();
PdfDocument pdf2 = getPdf(filename2);
if (!pdf2)
return;
PdfPage page2(pdf2->page(pair.right));
if (!page2)
return;
const QPair<QString, QString> keys = cacheKeys(index, pair);
const QPair<QPixmap, QPixmap> pixmaps = populatePixmaps(pdf1, page1,
pdf2, page2, pair.hasVisualDifference, keys.first,
keys.second);
page1Label->setPixmap(pixmaps.first);
page2Label->setPixmap(pixmaps.second);
if (showZonesCheckBox->isChecked())
showZones();
if (marginsGroupBox->isChecked())
showMargins();
}
const QPair<QString, QString> MainWindow::cacheKeys(const int index,
const PagePair &pair) const
{
int comparisonMode;
if (compareComboBox->currentIndex() == CompareAppearance)
comparisonMode = showComboBox->currentIndex();
else
comparisonMode = -compareComboBox->currentIndex();
QString zoning;
if (zoningGroupBox->isChecked())
zoning = QString("%1:%2:%3").arg(columnsSpinBox->value())
.arg(toleranceRSpinBox->value())
.arg(toleranceYSpinBox->value());
QString margins;
if (marginsGroupBox->isChecked())
margins = QString("%1:%2:%3:%4").arg(topMarginSpinBox->value())
.arg(bottomMarginSpinBox->value())
.arg(leftMarginSpinBox->value())
.arg(rightMarginSpinBox->value());
const QString key = QString("%1:%2:%3:%4:%5").arg(index)
.arg(zoomSpinBox->value()).arg(comparisonMode).arg(zoning)
.arg(margins);
const QString key1 = QString("1:%1:%2:%3").arg(key).arg(pair.left)
.arg(filename1LineEdit->text());
const QString key2 = QString("2:%1:%2:%3").arg(key).arg(pair.right)
.arg(filename2LineEdit->text());
return qMakePair(key1, key2);
}
const QPair<QPixmap, QPixmap> MainWindow::populatePixmaps(
const PdfDocument &pdf1, const PdfPage &page1,
const PdfDocument &pdf2, const PdfPage &page2,
bool hasVisualDifference, const QString &key1,
const QString &key2)
{
QPixmap pixmap1;
QPixmap pixmap2;
#if QT_VERSION >= 0x040600
if (!QPixmapCache::find(key1, &pixmap1) ||
!QPixmapCache::find(key2, &pixmap2)) {
#else
if (!QPixmapCache::find(key1, pixmap1) ||
!QPixmapCache::find(key2, pixmap2)) {
#endif
QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
const int DPI = static_cast<int>(POINTS_PER_INCH *
(zoomSpinBox->value() / 100.0));
const bool compareText = compareComboBox->currentIndex() !=
CompareAppearance;
QImage plainImage1;
QImage plainImage2;
if (hasVisualDifference || !compareText) {
plainImage1 = page1->renderToImage(DPI, DPI);
plainImage2 = page2->renderToImage(DPI, DPI);
}
pdf1->setRenderHint(Poppler::Document::Antialiasing);
pdf1->setRenderHint(Poppler::Document::TextAntialiasing);
pdf2->setRenderHint(Poppler::Document::Antialiasing);
pdf2->setRenderHint(Poppler::Document::TextAntialiasing);
QImage image1 = page1->renderToImage(DPI, DPI);
QImage image2 = page2->renderToImage(DPI, DPI);
if (compareComboBox->currentIndex() != CompareAppearance ||
showComboBox->currentIndex() == 0) {
QPainterPath highlighted1;
QPainterPath highlighted2;
if (hasVisualDifference || !compareText)
computeVisualHighlights(&highlighted1, &highlighted2,
plainImage1, plainImage2);
else
computeTextHighlights(&highlighted1, &highlighted2, page1,
page2, DPI);
if (!highlighted1.isEmpty())
paintOnImage(highlighted1, &image1);
if (!highlighted2.isEmpty())
paintOnImage(highlighted2, &image2);
if (highlighted1.isEmpty() && highlighted2.isEmpty()) {
QFont font("Helvetica", 14);
font.setOverline(true);
font.setUnderline(true);
highlighted1.addText(DPI / 4, DPI / 4, font,
tr("DiffPDF: False Positive"));
paintOnImage(highlighted1, &image1);
}
pixmap1 = QPixmap::fromImage(image1);
pixmap2 = QPixmap::fromImage(image2);
} else {
pixmap1 = QPixmap::fromImage(image1);
QImage composed(image1.size(), image1.format());
QPainter painter(&composed);
painter.setCompositionMode(QPainter::CompositionMode_Source);
painter.fillRect(composed.rect(), Qt::transparent);
painter.setCompositionMode(
QPainter::CompositionMode_SourceOver);
painter.drawImage(0, 0, image1);
painter.setCompositionMode(
static_cast<QPainter::CompositionMode>(
showComboBox->itemData(
showComboBox->currentIndex()).toInt()));
painter.drawImage(0, 0, image2);
painter.setCompositionMode(
QPainter::CompositionMode_DestinationOver);
painter.fillRect(composed.rect(), Qt::white);
painter.end();
pixmap2 = QPixmap::fromImage(composed);
}
QPixmapCache::insert(key1, pixmap1);
QPixmapCache::insert(key2, pixmap2);
QApplication::restoreOverrideCursor();
}
return qMakePair(pixmap1, pixmap2);
}
void MainWindow::computeTextHighlights(QPainterPath *highlighted1,
QPainterPath *highlighted2, const PdfPage &page1,
const PdfPage &page2, const int DPI)
{
const bool ComparingWords = compareComboBox->currentIndex() ==
CompareWords;
QRectF rect1;
QRectF rect2;
QSettings settings;
const int OVERLAP = settings.value("Overlap", 5).toInt();
const bool COMBINE = settings.value("CombineTextHighlighting", true)
.toBool();
QRectF rect;
if (marginsGroupBox->isChecked())
rect = pointRectForMargins(page1->pageSize());
const TextBoxList list1 = getTextBoxes(page1, rect);
const TextBoxList list2 = getTextBoxes(page2, rect);
TextItems items1 = ComparingWords ? getWords(list1)
: getCharacters(list1);
TextItems items2 = ComparingWords ? getWords(list2)
: getCharacters(list2);
const int ToleranceY = toleranceYSpinBox->value();
if (zoningGroupBox->isChecked()) {
const int ToleranceR = toleranceRSpinBox->value();
const int Columns = columnsSpinBox->value();
items1.columnZoneYxOrder(page1->pageSize().width(), ToleranceR,
ToleranceY, Columns);
items2.columnZoneYxOrder(page2->pageSize().width(), ToleranceR,
ToleranceY, Columns);
}
if (debug >= DebugShowTexts) {
const bool Yx = debug == DebugShowTextsAndYX;
items1.debug(1, ToleranceY, ComparingWords, Yx);
items2.debug(2, ToleranceY, ComparingWords, Yx);
}
SequenceMatcher matcher(items1.texts(), items2.texts());
RangesPair rangesPair = computeRanges(&matcher);
rangesPair = invertRanges(rangesPair.first, items1.count(),
rangesPair.second, items2.count());
foreach (int index, rangesPair.first)
addHighlighting(&rect1, highlighted1, items1.at(index).rect,
OVERLAP, DPI, COMBINE);
if (!rect1.isNull() && !rangesPair.first.isEmpty())
highlighted1->addRect(rect1);
foreach (int index, rangesPair.second)
addHighlighting(&rect2, highlighted2, items2.at(index).rect,
OVERLAP, DPI, COMBINE);
if (!rect2.isNull() && !rangesPair.second.isEmpty())
highlighted2->addRect(rect2);
}
void MainWindow::addHighlighting(QRectF *bigRect,