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lib/engine/rs_settings.h

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+/****************************************************************************
+**
+** This file is part of the LibreCAD project, a 2D CAD program
+**
+** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
+** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
+**
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software 
+** Foundation and appearing in the file gpl-2.0.txt included in the
+** packaging of this file.
+**
+** 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.
+** 
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+**
+** This copyright notice MUST APPEAR in all copies of the script!  
+**
+**********************************************************************/
+
+
+#ifndef RS_SETTINGS_H
+#define RS_SETTINGS_H
+
+#include <QString>
+#include <map>
+
+class QVariant;
+
+// ---------------------------------------------------------------------------
+// Default Settings
+// ---------------------------------------------------------------------------
+
+namespace Colors
+{
+    const QString snap_indicator   = "#FFC200";
+    const QString background       = "Black";
+    const QString grid             = "Gray";
+    const QString meta_grid        = "#404040";
+    const QString select           = "#A54747";
+    const QString highlight        = "#739373";
+    const QString start_handle     = "Cyan";
+    const QString handle           = "Blue";
+    const QString end_handle       = "Blue";
+}
+
+// ---------------------------------------------------------------------------
+
+#define RS_SETTINGS RS_Settings::instance()
+
+/**
+ * This class can store and reload settings from a 
+ * configuration file or the windoze registry.
+ * Please note that the Qt default implementation doesn't
+ * work as one would expect. That's why this class overwrites
+ * most of the default behaviour.
+ * 
+ */
+class RS_Settings {
+
+public:
+	~RS_Settings();
+	/**
+     * @return Instance to the unique settings object.
+     */
+	static RS_Settings* instance();
+
+    /**
+     * Initialize the system.
+     *
+     * @param companyKey Company Key
+     * @param appKey Application key
+     */
+    void init(const QString& companyKey, const QString& appKey);
+
+    void beginGroup(const QString& group);
+    void endGroup();
+
+    bool writeEntry(const QString& key, int value);
+    bool writeEntry(const QString& key, double value);
+    bool writeEntry(const QString& key, const QVariant& value);
+    bool writeEntry(const QString& key, const QString& value);
+    bool writeEntry(const QString& key, const QMap<QString,double> value);
+    QString readEntry(const QString& key,
+                        const QString& def = QString(),
+                        bool* ok = 0);
+    QByteArray readByteArrayEntry(const QString& key,
+                        const QString& def = QString(),
+                        bool* ok = 0);
+	int readNumEntry(const QString& key, int def=0);
+    double readNumDEntry(const QString& key, double def=0.0000);
+    QMap<QString,QVariant> readQMapQStringQVariantEntry(const QString& key,QMap<QString,QVariant> def);
+    QMap<QString,double> readQMapQStringDoubleEntry(const QString& key,QMap<QString,double> def);
+    QStringList readQListQStringEntry(const QString& key,QStringList def);
+    void clear_all();
+    void clear_geometry();
+    void removeEntry(QString value);
+    static bool save_is_allowed;
+
+private:
+    RS_Settings();
+	RS_Settings(RS_Settings const&) = delete;
+	RS_Settings& operator = (RS_Settings const&) = delete;
+	QVariant readEntryCache(const QString& key);
+	void addToCache(const QString& key, const QVariant& value);
+
+protected:
+    static RS_Settings* uniqueInstance;
+    // 存方被读取过的键值
+	std::map<QString, QVariant> cache;
+    QString companyKey;
+    QString appKey;
+    QString group;
+    bool initialized;
+};
+
+#endif
+