GUI: Set initial path for adding paths to project.

Use project file's location as base path when adding new paths
(checked, included or ignored) to the project. In most cases user
wants to add paths in the same project so this reduces browsing
paths considerably when adding them.

gui/projectfiledialog.cpp

@@ -28,6 +28,7 @@
 
 ProjectFileDialog::ProjectFileDialog(const QString &path, QWidget *parent)
     : QDialog(parent)
+    , mFilePath(path)
 {
     mUI.setupUi(this);
 
@@ -187,9 +188,11 @@ void ProjectFileDialog::SetIgnorePaths(const QStringList &paths)
 
 void ProjectFileDialog::AddIncludeDir()
 {
+    QFileInfo inf(mFilePath);
+    const QString rootpath = inf.absolutePath();
     QString selectedDir = QFileDialog::getExistingDirectory(this,
                           tr("Select include directory"),
-                          QString());
+                          rootpath);
 
     if (!selectedDir.isEmpty())
     {
@@ -199,9 +202,11 @@ void ProjectFileDialog::AddIncludeDir()
 
 void ProjectFileDialog::AddPath()
 {
+    QFileInfo inf(mFilePath);
+    const QString rootpath = inf.absolutePath();
     QString selectedDir = QFileDialog::getExistingDirectory(this,
-                          tr("Select directory to check"),
+                          tr("Select a directory to check"),
-                          QString());
+                          rootpath);
 
     if (!selectedDir.isEmpty())
     {
@@ -237,9 +242,12 @@ void ProjectFileDialog::RemovePath()
 
 void ProjectFileDialog::AddIgnorePath()
 {
+    QFileInfo inf(mFilePath);
+    const QString rootpath = inf.absolutePath();
+
     QString selectedDir = QFileDialog::getExistingDirectory(this,
                           tr("Select directory to ignore"),
-                          QString());
+                          rootpath);
 
     if (!selectedDir.isEmpty())
     {

gui/projectfiledialog.h

@@ -171,6 +171,11 @@ protected:
 
 private:
     Ui::ProjectFile mUI;
+
+    /**
+     * @brief Projectfile path.
+     */
+    QString mFilePath;
 };
 
 /// @}