1 files changed, 204 insertions, 0 deletions
diff --git a/src/plugins/imageviewer/exportdialog.cpp b/src/plugins/imageviewer/exportdialog.cpp
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+++ b/src/plugins/imageviewer/exportdialog.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "exportdialog.h"
+
+#include <coreplugin/coreicons.h>
+
+#include <utils/pathchooser.h>
+
+#include <QApplication>
+#include <QDesktopWidget>
+#include <QDialogButtonBox>
+#include <QFileDialog>
+#include <QFormLayout>
+#include <QHBoxLayout>
+#include <QMessageBox>
+#include <QLabel>
+#include <QLineEdit>
+#include <QPushButton>
+#include <QSpinBox>
+#include <QToolButton>
+#include <QVBoxLayout>
+
+#include <QImageWriter>
+
+#include <QDebug>
+#include <QDir>
+#include <QFileInfo>
+#include <QMimeDatabase>
+#include <QMimeType>
+
+namespace ImageViewer {
+namespace Internal {
+
+enum { exportMinimumSize = 1, exportMaximumSize = 2000 };
+
+static QString imageNameFilterString()
+{
+    static QString result;
+    if (result.isEmpty()) {
+        QMimeDatabase mimeDatabase;
+        const QString separator = QStringLiteral(";;");
+        foreach (const QByteArray &mimeType, QImageWriter::supportedMimeTypes()) {
+            const QString filter = mimeDatabase.mimeTypeForName(QLatin1String(mimeType)).filterString();
+            if (!filter.isEmpty()) {
+                if (mimeType == QByteArrayLiteral("image/png")) {
+                    if (!result.isEmpty())
+                        result.prepend(separator);
+                    result.prepend(filter);
+                } else {
+                    if (!result.isEmpty())
+                        result.append(separator);
+                    result.append(filter);
+                }
+            }
+        }
+    }
+    return result;
+}
+
+ExportDialog::ExportDialog(QWidget *parent)
+    : QDialog(parent)
+    , m_pathChooser(new Utils::PathChooser(this))
+    , m_widthSpinBox(new QSpinBox(this))
+    , m_heightSpinBox(new QSpinBox(this))
+    , m_aspectRatio(1)
+{
+    typedef void (QSpinBox::*QSpinBoxIntSignal)(int);
+
+    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
+
+    QFormLayout *formLayout = new QFormLayout(this);
+
+    m_pathChooser->setMinimumWidth(QApplication::desktop()->availableGeometry(this).width() / 5);
+    m_pathChooser->setExpectedKind(Utils::PathChooser::SaveFile);
+    m_pathChooser->setPromptDialogFilter(imageNameFilterString());
+    formLayout->addRow(tr("File:"), m_pathChooser);
+
+    QHBoxLayout *sizeLayout = new QHBoxLayout;
+    m_widthSpinBox->setMinimum(exportMinimumSize);
+    m_widthSpinBox->setMaximum(exportMaximumSize);
+    connect(m_widthSpinBox, static_cast<QSpinBoxIntSignal>(&QSpinBox::valueChanged),
+            this, &ExportDialog::exportWidthChanged);
+    sizeLayout->addWidget(m_widthSpinBox);
+    //: Multiplication, as in 32x32
+    sizeLayout->addWidget(new QLabel(tr("x")));
+    m_heightSpinBox->setMinimum(exportMinimumSize);
+    m_heightSpinBox->setMaximum(exportMaximumSize);
+    connect(m_heightSpinBox, static_cast<QSpinBoxIntSignal>(&QSpinBox::valueChanged),
+            this, &ExportDialog::exportHeightChanged);
+    sizeLayout->addWidget(m_heightSpinBox);
+    QToolButton *resetButton = new QToolButton(this);
+    resetButton->setIcon(QIcon(QStringLiteral(":/qt-project.org/styles/commonstyle/images/refresh-32.png")));
+    sizeLayout->addWidget(resetButton);
+    sizeLayout->addStretch();
+    connect(resetButton, &QAbstractButton::clicked, this, &ExportDialog::resetExportSize);
+    formLayout->addRow(tr("Size:"), sizeLayout);
+
+    QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, this);
+    connect(buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
+    connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
+    formLayout->addRow(buttonBox);
+}
+
+void ExportDialog::accept()
+{
+    if (!m_pathChooser->isValid()) {
+        QMessageBox::warning(this, windowTitle(), m_pathChooser->errorMessage());
+        return;
+    }
+    const QString fileName = exportFileName();
+    if (QFileInfo::exists(fileName)) {
+        const QString question = tr("%1 already exists.\nWould you like to overwrite it?")
+            .arg(QDir::toNativeSeparators(fileName));
+        if (QMessageBox::question(this, windowTitle(), question, QMessageBox::Yes | QMessageBox::No) !=  QMessageBox::Yes)
+            return;
+    }
+    QDialog::accept();
+}
+
+QSize ExportDialog::exportSize() const
+{
+    return QSize(m_widthSpinBox->value(), m_heightSpinBox->value());
+}
+
+void ExportDialog::setExportSize(const QSize &size)
+{
+    m_defaultSize = size;
+    const QSizeF defaultSizeF(m_defaultSize);
+    m_aspectRatio = defaultSizeF.width() / defaultSizeF.height();
+    setExportWidthBlocked(size.width());
+    setExportHeightBlocked(size.height());
+}
+
+void ExportDialog::resetExportSize()
+{
+    setExportWidthBlocked(m_defaultSize.width());
+    setExportHeightBlocked(m_defaultSize.height());
+}
+
+void ExportDialog::setExportWidthBlocked(int width)
+{
+    if (m_widthSpinBox->value() != width) {
+        const bool blockSignals = m_widthSpinBox->blockSignals(true);
+        m_widthSpinBox->setValue(width);
+        m_widthSpinBox->blockSignals(blockSignals);
+    }
+}
+
+void ExportDialog::setExportHeightBlocked(int height)
+{
+    if (m_heightSpinBox->value() != height) {
+        const bool blockSignals = m_heightSpinBox->blockSignals(true);
+        m_heightSpinBox->setValue(height);
+        m_heightSpinBox->blockSignals(blockSignals);
+    }
+}
+
+void ExportDialog::exportWidthChanged(int width)
+{
+    const bool square = m_defaultSize.width() == m_defaultSize.height();
+    setExportHeightBlocked(square ? width : qRound(qreal(width) / m_aspectRatio));
+}
+
+void ExportDialog::exportHeightChanged(int height)
+{
+    const bool square = m_defaultSize.width() == m_defaultSize.height();
+    setExportWidthBlocked(square ? height : qRound(qreal(height) * m_aspectRatio));
+}
+
+QString ExportDialog::exportFileName() const
+{
+    return m_pathChooser->fileName().toString();
+}
+
+void ExportDialog::setExportFileName(const QString &f)
+{
+    m_pathChooser->setFileName(Utils::FileName::fromString(f));
+}
+
+} // namespace Internal
+} // namespace ImageViewer