Add directory picker (#1889)

* Add directory picker
* Add Russian translation for dirPicker
* Rename the class according to the conventions

---------

Co-authored-by: zhitm <[email protected]>

qrtranslations/fr/qrutils_fr.ts

@@ -447,6 +447,19 @@
         <translation type="unfinished"></translation>
     </message>
 </context>
+<context>
+    <name>qReal::ui::DirPicker</name>
+    <message>
+        <location filename="../../qrutils/widgets/dirPicker.cpp" line="+33"/>
+        <source>Browse...</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location line="+35"/>
+        <source>Select directory</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
 <context>
     <name>qReal::ui::ImagePicker</name>
     <message>

qrtranslations/ru/qrutils_ru.ts

@@ -559,6 +559,19 @@
         <translation>Очистить консоль</translation>
     </message>
 </context>
+<context>
+    <name>qReal::ui::DirPicker</name>
+    <message>
+        <location filename="../../qrutils/widgets/dirPicker.cpp" line="+33"/>
+        <source>Browse...</source>
+        <translation>Обзор...</translation>
+    </message>
+    <message>
+        <location line="+35"/>
+        <source>Select directory</source>
+        <translation>Выберите директорию</translation>
+    </message>
+</context>
 <context>
     <name>qReal::ui::ImagePicker</name>
     <message>

qrutils/widgets/dirPicker.cpp

@@ -0,0 +1,71 @@
+/* Copyright 2025 CyberTech Labs Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License. */
+
+#include "dirPicker.h"
+#include <QtWidgets/QHBoxLayout>
+#include <QtWidgets/QLabel>
+#include <QtWidgets/QLineEdit>
+#include <QtWidgets/QPushButton>
+#include <QtWidgets/QStyle>
+
+#include <qrkernel/settingsManager.h>
+#include <qrutils/widgets/qRealFileDialog.h>
+
+using namespace qReal::ui;
+
+
+DirPicker::DirPicker(QWidget *parent)
+	: QWidget(parent)
+	, mLabel(new QLabel(this))
+	, mPathEditor(new QLineEdit(this))
+{
+	QPushButton *button = new QPushButton(style()->standardIcon(QStyle::SP_DirIcon), tr("Browse..."), this);
+	QHBoxLayout *layout = new QHBoxLayout(this);
+	layout->addWidget(mLabel);
+	layout->addWidget(mPathEditor);
+	layout->addWidget(button);
+	connect(button, &QPushButton::clicked, this, &DirPicker::pick);
+}
+
+void DirPicker::configure(const QString &settingsKey, const QString &title)
+{
+	mSettingsKey = settingsKey;
+	mLabel->setText(title);
+}
+
+bool DirPicker::isSavedDirExist()
+{
+	return QDir(SettingsManager::value(mSettingsKey).toString()).exists();
+}
+
+void DirPicker::save() const
+{
+	if (!mPathEditor->text().isEmpty() && !mSettingsKey.isEmpty()) {
+		SettingsManager::setValue(mSettingsKey, mPathEditor->text());
+	}
+}
+
+void DirPicker::restore()
+{
+	if (!mSettingsKey.isEmpty()) {
+		mPathEditor->setText(SettingsManager::value(mSettingsKey).toString());
+	}
+}
+
+void DirPicker::pick()
+{
+	QDir dirPath = QFileDialog::getExistingDirectory(this, tr("Select directory"));
+	SettingsManager::setValue(mSettingsKey, dirPath.absolutePath());
+	mPathEditor->setText(dirPath.absolutePath());
+}

qrutils/widgets/dirPicker.h

@@ -0,0 +1,57 @@
+/* Copyright 2025 CyberTech Labs Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License. */
+
+#pragma once
+
+#include <QtWidgets/QWidget>
+#include <qrutils/utilsDeclSpec.h>
+
+class QLabel;
+class QLineEdit;
+
+namespace qReal {
+namespace ui {
+
+/// Picks some image from disk, saves into settings.
+class QRUTILS_EXPORT DirPicker : public QWidget
+{
+	Q_OBJECT
+
+public:
+	explicit DirPicker(QWidget *parent = nullptr);
+
+	/// Sets parameters of the image picker.
+	void configure(const QString &settingsKey, const QString &title);
+
+	/// Saves picked location into settings.
+	void save() const;
+
+	/// Restores last picked value.
+	void restore();
+
+	/// Determines whether the picked location exists or not
+	bool isSavedDirExist();
+
+
+private slots:
+	void pick();
+
+private:
+	QString mSettingsKey;
+	QLabel *mLabel;
+	QLineEdit *mPathEditor;
+};
+
+}
+}

qrutils/widgets/widgets.pri

@@ -14,6 +14,7 @@
 
 HEADERS += \
 	$$PWD/colorListEditor.h \
+	$$PWD/dirPicker.h \
 	$$PWD/paintWidget.h \
 	$$PWD/painterInterface.h \
 	$$PWD/searchLineEdit.h \
@@ -26,6 +27,7 @@ HEADERS += \
 
 SOURCES += \
 	$$PWD/colorListEditor.cpp \
+	$$PWD/dirPicker.cpp \
 	$$PWD/paintWidget.cpp \
 	$$PWD/searchLineEdit.cpp \
 	$$PWD/consoleDock.cpp \