maplayer plugin support

git-svn-id: http://svn.osgeo.org/qgis/trunk@237 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/qgisapp.cpp

@@ -6,7 +6,7 @@
     email                : sherman at mrcc.com
              Romans 3:23=>Romans 6:23=>Romans 10:9,10=>Romans 12
 ***************************************************************************/
-
+/* $Id$ */
 /***************************************************************************
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -67,14 +67,19 @@
 #include "qgslayerproperties.h"
 #include "qgsabout.h"
 #include "qgspluginmanager.h"
+#include "qgsmaplayerinterface.h"
 #include "qgis.h"
 #include "qgisapp.h"
+#include "qgspluginitem.h"
 #include "../plugins/qgisplugin.h"
 #include "xpm/qgis.xpm"
 #include <ogrsf_frmts.h>
+typedef QgsMapLayerInterface* create_it();
+typedef QString name_t();
+typedef QString description_t();
 
 // version
-static const char *qgisVersion = "0.0.11 - June 10, 2003";
+static const char *qgisVersion = "0.0.12 pre 1 - July 4, 2003";
 static const int qgisVersionInt = 11;
 // cursors
 static unsigned char zoom_in_bits[] = {
@@ -675,13 +680,96 @@ void QgisApp::actionPluginManager_activated(){
 	QgsPluginManager *pm = new QgsPluginManager(this);
 	if(pm->exec()){
 		// load selected plugins
+		std::vector<QgsPluginItem> pi = pm->getSelectedPlugins();
+		std::vector<QgsPluginItem>::iterator it = pi.begin();
+		while(it != pi.end()){
+			QgsPluginItem plugin = *it;
+			loadPlugin(plugin.name(), plugin.description(), plugin.fullPath());
+			it++;
+		}
+
 		
 	}
 	
 
+}
+void QgisApp::loadPlugin(QString name, QString description, QString fullPath){
+	QLibrary *myLib = new QLibrary(fullPath);
+		std::cout << "Library name is " << myLib->library() << std::endl;
+		bool loaded = myLib->load();
+		if (loaded) {
+			std::cout << "Loaded test plugin library" << std::endl;
+			std::cout << "Attempting to resolve the classFactory function" << std::endl;
+			create_it *cf = (create_it *) myLib->resolve("classFactory");
+	
+			if (cf) {
+				std::cout << "Getting pointer to a MapLayerInterface object from the library\n";
+				QgsMapLayerInterface *pl = cf();
+				if(pl){
+					std::cout << "Instantiated the maplayer test plugin\n";
+					// set the main window pointer for the plugin
+					pl->setQgisMainWindow(this);
+					std::cout << "getInt returned " << pl->getInt() << " from map layer plugin\n";
+					// set up the gui
+					pl->initGui();
+				}else{
+					std::cout << "Unable to instantiate the maplayer test plugin\n";
+				}
+			}
+		}else{
+			std::cout << "Failed to load " << fullPath << "\n";
+		}
+}
+void QgisApp::testMapLayerPlugins(){
+	// map layer plugins live in their own directory (somewhere to be determined)
+	QDir mlpDir("../plugins/maplayer", "*.so.1.0.0", QDir::Name | QDir::IgnoreCase, QDir::Files );
+	if(mlpDir.count() == 0){
+		QMessageBox::information(this,"No MapLayer Plugins", "No MapLayer plugins in ../plugins/maplayer");
+	}else{
+		for(unsigned i = 0; i < mlpDir.count(); i++){
+		std::cout << "Getting information for plugin: " << mlpDir[i] << std::endl;
+		std::cout << "Attempting to load the plugin using dlopen\n";
+		void *handle = dlopen("../plugins/maplayer/" + mlpDir[i], RTLD_LAZY);
+	             if (!handle) {
+			std::cout << "Error in dlopen: " <<  dlerror() << std::endl;
+		     }else{
+			std::cout << "dlopen suceeded" << std::endl;
+			dlclose(handle);
+		     }
+		
+		QLibrary *myLib = new QLibrary("../plugins/maplayer/" + mlpDir[i]);
+		std::cout << "Library name is " << myLib->library() << std::endl;
+		bool loaded = myLib->load();
+		if (loaded) {
+			std::cout << "Loaded test plugin library" << std::endl;
+			std::cout << "Attempting to resolve the classFactory function" << std::endl;
+			create_it *cf = (create_it *) myLib->resolve("classFactory");
+	
+			if (cf) {
+				std::cout << "Getting pointer to a MapLayerInterface object from the library\n";
+				QgsMapLayerInterface *pl = cf();
+				if(pl){
+					std::cout << "Instantiated the maplayer test plugin\n";
+					// set the main window pointer for the plugin
+					pl->setQgisMainWindow(this);
+					std::cout << "getInt returned " << pl->getInt() << " from map layer plugin\n";
+					// set up the gui
+					pl->initGui();
+				}else{
+					std::cout << "Unable to instantiate the maplayer test plugin\n";
+				}
+			}
+		}else{
+			std::cout << "Failed to load " << mlpDir[i] << "\n";
+		}
+	}
+}
 }
 void QgisApp::testPluginFunctions()
 {
+	// test maplayer plugins first
+	testMapLayerPlugins();
+	if(false){
 // try to load plugins from the plugin directory and test each one
 
 	QDir pluginDir("../plugins", "*.so*", QDir::Name | QDir::IgnoreCase, QDir::Files | QDir::NoSymLinks);
@@ -746,6 +834,7 @@ void QgisApp::testPluginFunctions()
 		}
 		}
 	}
+	}
 }
 
 void QgisApp::saveWindowState()

src/qgisapp.h

@@ -98,8 +98,12 @@ class QgisApp:public QgisAppBase
 	void zoomToLayerExtent();
 	//! test plugin functionality
 	void testPluginFunctions();
+	//! test maplayer plugins
+	void testMapLayerPlugins();
 	//! plugin manager
 	void actionPluginManager_activated();
+	//! plugin loader
+	void loadPlugin(QString name, QString description, QString fullPath);
 	//! Save window state
 	void saveWindowState();
 	//! Restore the window and toolbar state

src/qgsmaplayerinterface.h

@@ -0,0 +1,34 @@
+/***************************************************************************
+    begin                : Jul 10 2003
+    copyright            : (C) 2003 by Gary E.Sherman
+    email                : sherman at mrcc.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.                                   *
+ *                                                                         *
+ ***************************************************************************/
+ /* $Id$ */
+#ifndef QGSMAPLAYERINTERFACE_H
+#define QGSMAPLAYERINTERFACE_H
+/** 
+* Interface class for map layer plugins
+*/
+#include <qobject.h>
+#include "qgisapp.h"
+class QgsMapLayerInterface: public QObject{
+	Q_OBJECT
+public:
+virtual void setQgisMainWindow(QMainWindow *qgis) = 0;
+// a test function to return an int
+virtual int getInt()=0;
+// setup the plugin's GUI
+virtual void initGui()=0;
+virtual void unload()=0;
+
+};
+#endif // QGSMAPLAYERINTERFACE_H

src/qgspluginitem.cpp

@@ -10,16 +10,26 @@
 // Copyright: See COPYING file that comes with this distribution
 //
 //
+/* $Id$ */
 #include <qstring.h>
 #include "qgspluginitem.h"
 
 QgsPluginItem::QgsPluginItem(QString _name, QString _description, QString _fullPath) :
-	name(_name), description(_description), fullPath(_fullPath)
+	m_name(_name), m_description(_description), m_fullPath(_fullPath)
 {
 
 }
 
+QString QgsPluginItem::name(){
+	return m_name;
+}
 
+QString QgsPluginItem::description(){
+	return m_description;
+}
+QString QgsPluginItem::fullPath(){
+	return m_fullPath;
+}
 QgsPluginItem::~QgsPluginItem()
 {
 }

src/qgspluginitem.h

@@ -10,6 +10,7 @@
 // Copyright: See COPYING file that comes with this distribution
 //
 //
+/* $Id$ */
 #ifndef QGSPLUGINITEM_H
 #define QGSPLUGINITEM_H
 class QString;
@@ -21,12 +22,14 @@ Class to contain information about a loadable plugin, including its name, descri
 class QgsPluginItem{
 public:
     QgsPluginItem(QString name=0, QString description=0, QString fullPath=0);
-
+    QString name();
+    QString description();
+    QString fullPath();
     ~QgsPluginItem();
 private:
-	QString name;
-	QString description;
-	QString fullPath;
+	QString m_name;
+	QString m_description;
+	QString m_fullPath;
 
 };
 

src/qgspluginmanager.cpp

@@ -10,6 +10,7 @@
 // Copyright: See COPYING file that comes with this distribution
 //
 //
+/* $Id$ */
 #include <qfiledialog.h>
 #include <qlineedit.h>
 #include <qlistview.h>
@@ -60,4 +61,14 @@ QDir pluginDir(txtPluginDir->text(), "*.so*", QDir::Name | QDir::IgnoreCase, QDi
 }
 }
 std::vector<QgsPluginItem> QgsPluginManager::getSelectedPlugins(){
+	std::vector<QgsPluginItem> pis;
+	QCheckListItem *lvi = (QCheckListItem *)lstPlugins->firstChild();
+	while(lvi != 0){
+		if(lvi->isOn()){
+			
+			pis.push_back(QgsPluginItem(lvi->text(0), lvi->text(1), txtPluginDir->text() + "/" + lvi->text(2)));
+		}
+		lvi = (QCheckListItem *)lvi->nextSibling();
+	}
+	return pis;
 }

src/qgsshapefilelayer.h

@@ -5,7 +5,7 @@
     copyright            : (C) 2002 by Gary E.Sherman
     email                : sherman at mrcc.com
  ***************************************************************************/
-
+/* $Id$ */
 /***************************************************************************
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *

src/src.pro

@@ -58,7 +58,8 @@ HEADERS += qgisapp.h \
            qgsprojectio.h \
            qgisiface.h \
 	   qgspluginmanager.h \
-	   qgspluginitem.h
+	   qgspluginitem.h \
+	   qgsmaplayerinterface.h
 FORMS += qgisappbase.ui \
          qgslegenditembase.ui \
          qgsabout.ui \