Add a DiffShowEditor showing an additional info

Task-number: QTCREATORBUG-9489

Change-Id: I3ae2e59ccaf397f4236505f21e027a42e2798784
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Petar Perisin <petar.perisin@gmail.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

src/plugins/diffeditor/diffshoweditor.cpp

@@ -0,0 +1,189 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "diffshoweditor.h"
+#include "diffeditorconstants.h"
+
+#include <QToolBar>
+#include <QToolButton>
+#include <QCoreApplication>
+
+#include <coreplugin/coreconstants.h>
+#include <coreplugin/minisplitter.h>
+
+#include <texteditor/basetexteditor.h>
+#include <texteditor/texteditorsettings.h>
+#include <texteditor/displaysettings.h>
+
+using namespace TextEditor;
+
+namespace DiffEditor {
+
+namespace Internal {
+
+class DiffShowEditorWidgetEditable : public BaseTextEditor
+{
+    Q_OBJECT
+public:
+    DiffShowEditorWidgetEditable(BaseTextEditorWidget *editorWidget) : BaseTextEditor(editorWidget) {}
+
+    Core::Id id() const { return "DiffShowViewEditor"; }
+    bool isTemporary() const { return false; }
+};
+
+class DiffShowEditorWidget : public BaseTextEditorWidget
+{
+    Q_OBJECT
+public:
+    DiffShowEditorWidget(QWidget *parent = 0);
+    virtual QSize sizeHint() const;
+
+public slots:
+    void setDisplaySettings(const DisplaySettings &ds);
+
+protected:
+    BaseTextEditor *createEditor() { return new DiffShowEditorWidgetEditable(this); }
+
+private:
+};
+
+DiffShowEditorWidget::DiffShowEditorWidget(QWidget *parent)
+    : BaseTextEditorWidget(parent)
+{
+    DisplaySettings settings = displaySettings();
+    settings.m_textWrapping = false;
+    settings.m_displayLineNumbers = false;
+    settings.m_highlightCurrentLine = false;
+    settings.m_displayFoldingMarkers = false;
+    settings.m_markTextChanges = false;
+    settings.m_highlightBlocks = false;
+    BaseTextEditorWidget::setDisplaySettings(settings);
+
+    setCodeFoldingSupported(true);
+    setFrameStyle(QFrame::NoFrame);
+
+    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
+}
+
+QSize DiffShowEditorWidget::sizeHint() const
+{
+    QSize size = BaseTextEditorWidget::sizeHint();
+    size.setHeight(size.height() / 5);
+    return size;
+}
+
+void DiffShowEditorWidget::setDisplaySettings(const DisplaySettings &ds)
+{
+    DisplaySettings settings = displaySettings();
+    settings.m_visualizeWhitespace = ds.m_visualizeWhitespace;
+    BaseTextEditorWidget::setDisplaySettings(settings);
+}
+
+} // namespace Internal
+
+DiffShowEditor::DiffShowEditor(DiffEditorWidget *editorWidget)
+    : DiffEditor(editorWidget)
+{
+    QSplitter *splitter = new Core::MiniSplitter(Qt::Vertical);
+    m_diffShowWidget = new Internal::DiffShowEditorWidget(splitter);
+    m_diffShowWidget->setReadOnly(true);
+    splitter->addWidget(m_diffShowWidget);
+    splitter->addWidget(editorWidget);
+    setWidget(splitter);
+
+    TextEditorSettings *settings = TextEditorSettings::instance();
+    connect(settings, SIGNAL(displaySettingsChanged(TextEditor::DisplaySettings)),
+            m_diffShowWidget, SLOT(setDisplaySettings(TextEditor::DisplaySettings)));
+    connect(settings, SIGNAL(fontSettingsChanged(TextEditor::FontSettings)),
+            m_diffShowWidget, SLOT(setFontSettings(TextEditor::FontSettings)));
+    m_diffShowWidget->setDisplaySettings(settings->displaySettings());
+    m_diffShowWidget->setCodeStyle(settings->codeStyle());
+    m_diffShowWidget->setFontSettings(settings->fontSettings());
+}
+
+DiffShowEditor::~DiffShowEditor()
+{
+}
+
+void DiffShowEditor::setDescription(const QString &description)
+{
+    m_diffShowWidget->setPlainText(description);
+}
+
+QString DiffShowEditor::displayName() const
+{
+    if (m_displayName.isEmpty())
+        m_displayName = QCoreApplication::translate("DiffShowEditor", Constants::DIFF_SHOW_EDITOR_DISPLAY_NAME);
+    return m_displayName;
+}
+
+void DiffShowEditor::setDisplayName(const QString &title)
+{
+    m_displayName = title;
+    emit changed();
+}
+
+Core::Id DiffShowEditor::id() const
+{
+    return Constants::DIFF_SHOW_EDITOR_ID;
+}
+
+QWidget *DiffShowEditor::toolBar()
+{
+    if (m_toolWidget)
+        return m_toolWidget;
+
+    // Create
+    DiffEditor::toolBar();
+
+    m_toggleDescriptionButton = new QToolButton(m_toolWidget);
+    m_toggleDescriptionButton->setIcon(QIcon(QLatin1String(Core::Constants::ICON_TOGGLE_TOPBAR)));
+    m_toggleDescriptionButton->setCheckable(true);
+    m_toggleDescriptionButton->setChecked(true);
+    connect(m_toggleDescriptionButton, SIGNAL(clicked(bool)),
+            this, SLOT(setDescriptionVisible(bool)));
+    m_toolWidget->addWidget(m_toggleDescriptionButton);
+    setDescriptionVisible(true);
+
+    return m_toolWidget;
+}
+
+void DiffShowEditor::setDescriptionVisible(bool visible)
+{
+    if (visible) {
+        m_toggleDescriptionButton->setToolTip(tr("Hide Change Description"));
+    } else {
+        m_toggleDescriptionButton->setToolTip(tr("Show Change Description"));
+    }
+    m_diffShowWidget->setVisible(visible);
+}
+
+} // namespace DiffEditor
+
+#include "diffshoweditor.moc"