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plugin.cpp
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plugin.cpp
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/***************************************************************************
plugin.cpp
Import tool for various worldmap analysis output files
Functions:
-------------------
begin : Jan 21, 2004
copyright : (C) 2004 by Tim Sutton
email : tim@linfiniti.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. *
* *
***************************************************************************/
/* $Id$ */
// includes
#include <qgisapp.h>
#include "qgisgui.h"
#include <qgsmaplayer.h>
#include "plugin.h"
#include <qgsproject.h>
#include <qgsmapcanvas.h>
#include <Q3Button>
#include <Q3PaintDeviceMetrics>
#include <Q3SimpleRichText>
#include <QPainter>
#include <QMenu>
//non qt includes
#include <iostream>
//the gui subclass
#include "plugingui.h"
// xpm for creating the toolbar icon
#include "icon.xpm"
#ifdef WIN32
#define QGISEXTERN extern "C" __declspec( dllexport )
#else
#define QGISEXTERN extern "C"
#endif
static const char * const ident_ = "$Id$";
static const char * const name_ = "CopyrightLabel";
static const char * const description_ = "This plugin overlays copyright information on the rendered map.";
static const char * const version_ = "Version 0.1";
static const QgisPlugin::PLUGINTYPE type_ = QgisPlugin::UI;
/**
* Constructor for the plugin. The plugin is passed a pointer to the main app
* and an interface object that provides access to exposed functions in QGIS.
* @param qgis Pointer to the QGIS main window
* @param _qI Pointer to the QGIS interface object
*/
QgsCopyrightLabelPlugin::QgsCopyrightLabelPlugin(QgisApp * theQGisApp,
QgisIface * theQgisInterFace):
QgisPlugin(name_,description_,version_,type_),
qgisMainWindowPointer(theQGisApp),
qGisInterface(theQgisInterFace)
{
mPlacementLabels << tr("Bottom Left") << tr("Top Left")
<< tr("Top Right") << tr("Bottom Right");
}
QgsCopyrightLabelPlugin::~QgsCopyrightLabelPlugin()
{}
/*
* Initialize the GUI interface for the plugin
*/
void QgsCopyrightLabelPlugin::initGui()
{
QMenu *pluginMenu = qGisInterface->getPluginMenu(tr("&Decorations"));
menuId = pluginMenu->insertItem(QIcon(icon),tr("&CopyrightLabel"), this, SLOT(run()));
pluginMenu->setWhatsThis(menuId, tr("Creates a copyright label that is displayed on the map canvas."));
// Create the action for tool
myQActionPointer = new QAction(QIcon(icon), tr("Copyright Label"), this);
myQActionPointer->setWhatsThis(tr("Creates a copyright label that is displayed on the map canvas."));
// Connect the action to the run
connect(myQActionPointer, SIGNAL(activated()), this, SLOT(run()));
// This calls the renderer everytime the cnavas has drawn itself
connect(qGisInterface->getMapCanvas(), SIGNAL(renderComplete(QPainter *)), this, SLOT(renderLabel(QPainter *)));
//this resets this plugin up if a project is loaded
connect(qgisMainWindowPointer, SIGNAL(projectRead()), this, SLOT(projectRead()));
// Add the icon to the toolbar
qGisInterface->addToolBarIcon(myQActionPointer);
//initialise default values in the gui
projectRead();
}
void QgsCopyrightLabelPlugin::projectRead()
{
#ifdef QGISDEBUG
std::cout << "+++++++++ Copyright plugin - project read slot called...." << std::endl;
#endif //default text to start with - try to fetch it from qgsproject
mQFont.setFamily(QgsProject::instance()->readEntry("CopyrightLabel","/FontName","Arial"));
mQFont.setPointSize(QgsProject::instance()->readNumEntry("CopyrightLabel","/FontSize",14));
mLabelQString = QgsProject::instance()->readEntry("CopyrightLabel","/Label","© QGIS 2006");
mPlacementIndex = QgsProject::instance()->readNumEntry("CopyrightLabel","/Placement",3);
mEnable = QgsProject::instance()->readBoolEntry("CopyrightLabel","/Enabled",true);
// todo - read & store state of font color
mLabelQColor = QColor(Qt::black);
}
//method defined in interface
void QgsCopyrightLabelPlugin::help()
{
//implement me!
}
// Slot called when the buffer menu item is activated
void QgsCopyrightLabelPlugin::run()
{
QgsCopyrightLabelPluginGui *myPluginGui=new QgsCopyrightLabelPluginGui(qgisMainWindowPointer, QgisGui::ModalDialogFlags);
//listen for when the layer has been made so we can draw it
//connect(myPluginGui, SIGNAL(drawRasterLayer(QString)), this, SLOT(drawRasterLayer(QString)));
//connect(myPluginGui, SIGNAL(drawVectorLayer(QString,QString,QString)), this, SLOT(drawVectorLayer(QString,QString,QString)));
//refresh the canvas when the user presses ok
connect(myPluginGui, SIGNAL(refreshCanvas()), this, SLOT(refreshCanvas()));
connect(myPluginGui, SIGNAL(changeFont(QFont )), this, SLOT(setFont(QFont )));
connect(myPluginGui, SIGNAL(changeLabel(QString )), this, SLOT(setLabel(QString )));
connect(myPluginGui, SIGNAL(changeColor(QColor)), this, SLOT(setColor(QColor)));
connect(myPluginGui, SIGNAL(changePlacement(int)), this, SLOT(setPlacement(int)));
connect(myPluginGui, SIGNAL(enableCopyrightLabel(bool)), this, SLOT(setEnable(bool)));
myPluginGui->setText(mLabelQString);
myPluginGui->setPlacementLabels(mPlacementLabels);
myPluginGui->setPlacement(mPlacementIndex);
myPluginGui->show();
}
//! Refresh the map display using the mapcanvas exported via the plugin interface
void QgsCopyrightLabelPlugin::refreshCanvas()
{
qGisInterface->getMapCanvas()->refresh();
}
void QgsCopyrightLabelPlugin::renderLabel(QPainter * theQPainter)
{
//Large IF statement to enable/disable copyright label
if (mEnable)
{
//@todo softcode this!myQSimpleText.height()
// need width/height of paint device
Q3PaintDeviceMetrics myMetrics( theQPainter->device() );
int myHeight = myMetrics.height();
int myWidth = myMetrics.width();
// FIXME: hard coded cludge for getting a colorgroup. Needs to be replaced
Q3Button * myQButton =new Q3Button();
QColorGroup myQColorGroup = myQButton->colorGroup();
delete myQButton;
Q3SimpleRichText myQSimpleText(mLabelQString, mQFont);
myQSimpleText.setWidth( theQPainter, myWidth-10 );
//Get canvas dimensions
int myYOffset = myHeight;
int myXOffset = myWidth;
//Determine placement of label from form combo box
switch (mPlacementIndex)
{
case 0: // Bottom Left
//Define bottom left hand corner start point
myYOffset = myYOffset - (myQSimpleText.height()+5);
myXOffset = 5;
break;
case 1: // Top left
//Define top left hand corner start point
myYOffset = 5;
myXOffset = 5;
break;
case 2: // Top Right
//Define top right hand corner start point
myYOffset = 5;
myXOffset = myXOffset - (myQSimpleText.widthUsed()+5);
break;
case 3: // Bottom Right
//Define bottom right hand corner start point
myYOffset = myYOffset - (myQSimpleText.height()+5);
myXOffset = myXOffset - (myQSimpleText.widthUsed()+5);
break;
default:
std::cerr << "Unknown placement index of " << mPlacementIndex << '\n';
}
//Paint label to canvas
QRect myRect(myXOffset,myYOffset,myQSimpleText.widthUsed(),myQSimpleText.height());
myQSimpleText.draw (theQPainter, myXOffset, myYOffset, myRect, myQColorGroup);
}
}
// Unload the plugin by cleaning up the GUI
void QgsCopyrightLabelPlugin::unload()
{
// remove the GUI
qGisInterface->removePluginMenuItem(tr("&Decorations"),menuId);
qGisInterface->removeToolBarIcon(myQActionPointer);
// remove the copyright from the canvas
disconnect(qGisInterface->getMapCanvas(), SIGNAL(renderComplete(QPainter *)),
this, SLOT(renderLabel(QPainter *)));
refreshCanvas();
delete myQActionPointer;
}
//! change the copyright font
void QgsCopyrightLabelPlugin::setFont(QFont theQFont)
{
mQFont = theQFont;
//save state to the project file.....
QgsProject::instance()->writeEntry("CopyrightLabel","/FontName",theQFont.family());
//save state to the project file.....
QgsProject::instance()->writeEntry("CopyrightLabel","/FontSize", theQFont.pointSize() );
refreshCanvas();
}
//! change the copyright text
void QgsCopyrightLabelPlugin::setLabel(QString theLabelQString)
{
mLabelQString = theLabelQString;
QgsProject::instance()->writeEntry("CopyrightLabel","/Label", mLabelQString );
refreshCanvas();
}
//! change the copyright text colour
void QgsCopyrightLabelPlugin::setColor(QColor theQColor)
{
mLabelQColor = theQColor;
QgsProject::instance()->writeEntry("CopyrightLabel","/ColorRedPart", mLabelQColor.red());
QgsProject::instance()->writeEntry("CopyrightLabel","/ColorGreenPart", mLabelQColor.green());
QgsProject::instance()->writeEntry("CopyrightLabel","/ColorBluePart", mLabelQColor.blue());
refreshCanvas();
}
//! set placement of copyright label
void QgsCopyrightLabelPlugin::setPlacement(int placementIndex)
{
mPlacementIndex = placementIndex;
QgsProject::instance()->writeEntry("CopyrightLabel","/Placement", mPlacementIndex);
refreshCanvas();
}
//! set whether copyright label is enabled
void QgsCopyrightLabelPlugin::setEnable(bool theBool)
{
mEnable = theBool;
QgsProject::instance()->writeEntry("CopyrightLabel","/Enabled", mEnable );
refreshCanvas();
}
/**
* Required extern functions needed for every plugin
* These functions can be called prior to creating an instance
* of the plugin class
*/
// Class factory to return a new instance of the plugin class
QGISEXTERN QgisPlugin * classFactory(QgisApp * theQGisAppPointer, QgisIface * theQgisInterfacePointer)
{
return new QgsCopyrightLabelPlugin(theQGisAppPointer, theQgisInterfacePointer);
}
// Return the name of the plugin - note that we do not user class members as
// the class may not yet be insantiated when this method is called.
QGISEXTERN QString name()
{
return name_;
}
// Return the description
QGISEXTERN QString description()
{
return description_;
}
// Return the type (either UI or MapLayer plugin)
QGISEXTERN int type()
{
return type_;
}
// Return the version number for the plugin
QGISEXTERN QString version()
{
return version_;
}
// Delete ourself
QGISEXTERN void unload(QgisPlugin * thePluginPointer)
{
delete thePluginPointer;
}