dedicated class for projection selection widget

qgis · Jan 5, 2015 · f68cd5e · nyalldawson · Jan 5, 2015 · 3nids
1 parent df2cac7
commit f68cd5e
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diff --git a/src/gui/CMakeLists.txt b/src/gui/CMakeLists.txt
@@ -202,6 +202,7 @@ qgsoptionsdialogbase.cpp
 qgsowssourceselect.cpp
 qgspluginmanagerinterface.cpp
 qgsprojectbadlayerguihandler.cpp
+qgsprojectionselectionwidget.cpp
 qgsprojectionselector.cpp
 qgsquerybuilder.cpp
 qgsrasterformatsaveoptionswidget.cpp
@@ -399,6 +400,7 @@ qgsoptionsdialogbase.h
 qgsowssourceselect.h
 qgspluginmanagerinterface.h
 qgsprojectbadlayerguihandler.h
+qgsprojectionselectionwidget.h
 qgsprojectionselector.h
 qgsquerybuilder.h
 qgsrasterformatsaveoptionswidget.h
@@ -482,6 +484,7 @@ qgsmessagebar.h
 qgsmessageviewer.h
 qgsoptionsdialogbase.h
 qgsowssourceselect.h
+qgsprojectionselectionwidget.h
 qgsprojectionselector.h
 qgsrelationeditorwidget.h
 qgsrubberband.h

diff --git a/src/gui/qgsprojectionselectionwidget.cpp b/src/gui/qgsprojectionselectionwidget.cpp
@@ -0,0 +1,78 @@
+/***************************************************************************
+    qgsprojectionselectionwidget.cpp
+     --------------------------------------
+    Date                 : 05.01.2015
+    Copyright            : (C) 2015 Denis Rouzaud
+    Email                : denis.rouzaud@gmail.com
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include <QHBoxLayout>
+
+
+#include "qgsprojectionselectionwidget.h"
+#include "qgsapplication.h"
+#include "qgsgenericprojectionselector.h"
+
+QgsProjectionSelectionWidget::QgsProjectionSelectionWidget( QWidget *parent ) :
+    QWidget( parent )
+{
+
+  QHBoxLayout* layout = new QHBoxLayout();
+  layout->setContentsMargins( 0, 0, 0, 0 );
+  layout->setSpacing( 0 );
+  setLayout( layout );
+
+  mCrsLineEdit = new QLineEdit( tr( "invalid projection" ), this );
+  mCrsLineEdit->setReadOnly(true);
+  layout->addWidget( mCrsLineEdit );
+
+  mButton = new QToolButton( this );
+  mButton->setIcon( QgsApplication::getThemeIcon( "mActionSetProjection.svg" ) );
+  layout->addWidget( mButton );
+
+  connect( mButton, SIGNAL( clicked() ), this, SLOT( selectCrs() ) );
+}
+
+void QgsProjectionSelectionWidget::selectCrs()
+{
+  QgsGenericProjectionSelector* mySelector = new QgsGenericProjectionSelector( this );
+
+  //find out crs id of current proj4 string
+  if ( mCrs.isValid() )
+  {
+    mySelector->setSelectedCrsId( mCrs.srsid() );
+  }
+
+  if ( mySelector->exec() )
+  {
+    QgsCoordinateReferenceSystem crs;
+    crs.createFromOgcWmsCrs( mySelector->selectedAuthId() );
+    setCrs( crs );
+    emit crsChanged( crs );
+  }
+  else
+  {
+    QApplication::restoreOverrideCursor();
+  }
+}
+
+
+void QgsProjectionSelectionWidget::setCrs( QgsCoordinateReferenceSystem crs )
+{
+  if ( crs.isValid() )
+  {
+    mCrsLineEdit->setText( crs.authid() + " - " + crs.description() );
+  }
+  else
+  {
+    mCrsLineEdit->setText( tr( "invalid projection" ) );
+  }
+  mCrs = crs;
+}
diff --git a/src/gui/qgsprojectionselectionwidget.h b/src/gui/qgsprojectionselectionwidget.h
@@ -0,0 +1,45 @@
+/***************************************************************************
+    qgsprojectionselectionwidget.h
+     --------------------------------------
+    Date                 : 05.01.2015
+    Copyright            : (C) 2015 Denis Rouzaud
+    Email                : denis.rouzaud@gmail.com
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+
+#ifndef QGSPROJECTIONSELECTIONWIDGET_H
+#define QGSPROJECTIONSELECTIONWIDGET_H
+
+#include <QWidget>
+#include <QLineEdit>
+#include <QToolButton>
+
+#include "qgscoordinatereferencesystem.h"
+
+class GUI_EXPORT QgsProjectionSelectionWidget : public QWidget
+{
+    Q_OBJECT
+  public:
+    explicit QgsProjectionSelectionWidget( QWidget *parent = 0 );
+
+  signals:
+    void crsChanged( QgsCoordinateReferenceSystem );
+
+  public slots:
+    void setCrs( QgsCoordinateReferenceSystem crs );
+    void selectCrs();
+
+  private:
+    QgsCoordinateReferenceSystem mCrs;
+    QLineEdit* mCrsLineEdit;
+    QToolButton* mButton;
+};
+
+#endif // QGSPROJECTIONSELECTIONWIDGET_H