mirror of
https://github.com/qgis/QGIS.git
synced 2025-12-04 00:06:46 -05:00
Updated renderNorthArrow slot to receive and draw to the qpainter pointer passed by the mapcanvas::renderComplete signal. This allows the north arrow plugin to draw onto the map even when it is being rendered to a device other than the mapCanvas' own pixmap member.
git-svn-id: http://svn.osgeo.org/qgis/trunk@1502 c8812cc2-4d05-0410-92ff-de0c093fc19c
This commit is contained in:
timlinux
parent
f4f5e228ed
commit
c20fc2ecf9
@ -1,5 +1,5 @@
|
||||
/***************************************************************************
|
||||
plugin.cpp
|
||||
plugin.cpp
|
||||
Import tool for various worldmap analysis output files
|
||||
Functions:
|
||||
|
||||
@ -50,7 +50,7 @@ email : tim@linfiniti.com
|
||||
|
||||
// xpm for creating the toolbar icon
|
||||
#include "icon.xpm"
|
||||
//
|
||||
//
|
||||
static const char * const ident_ = "$Id$";
|
||||
|
||||
static const char * const name_ = "NorthArrow";
|
||||
@ -66,9 +66,9 @@ static const QgisPlugin::PLUGINTYPE type_ = QgisPlugin::UI;
|
||||
* @param _qI Pointer to the QGIS interface object
|
||||
*/
|
||||
Plugin::Plugin(QgisApp * theQGisApp, QgisIface * theQgisInterFace):
|
||||
qgisMainWindowPointer(theQGisApp),
|
||||
qgisMainWindowPointer(theQGisApp),
|
||||
qGisInterface(theQgisInterFace),
|
||||
QgisPlugin(name_,description_,version_,type_)
|
||||
QgisPlugin(name_,description_,version_,type_)
|
||||
{
|
||||
mRotationInt=0;
|
||||
mPlacement=tr("Bottom Left");
|
||||
@ -76,11 +76,10 @@ QgisPlugin(name_,description_,version_,type_)
|
||||
|
||||
Plugin::~Plugin()
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize the GUI interface for the plugin
|
||||
* Initialize the GUI interface for the plugin
|
||||
*/
|
||||
void Plugin::initGui()
|
||||
{
|
||||
@ -97,7 +96,7 @@ void Plugin::initGui()
|
||||
// Connect the action to the run
|
||||
connect(myQActionPointer, SIGNAL(activated()), this, SLOT(run()));
|
||||
//render the arrow each time the map is rendered
|
||||
connect(qGisInterface->getMapCanvas(), SIGNAL(renderComplete()), this, SLOT(renderNorthArrow()));
|
||||
connect(qGisInterface->getMapCanvas(), SIGNAL(renderComplete(QPainter *)), this, SLOT(renderNorthArrow(QPainter *)));
|
||||
// Add the toolbar
|
||||
toolBarPointer = new QToolBar((QMainWindow *) qgisMainWindowPointer, "Decorations");
|
||||
toolBarPointer->setLabel("North Arrow");
|
||||
@ -134,92 +133,86 @@ void Plugin::refreshCanvas()
|
||||
qGisInterface->getMapCanvas()->refresh();
|
||||
}
|
||||
|
||||
void Plugin::renderNorthArrow()
|
||||
void Plugin::renderNorthArrow(QPainter * theQPainter)
|
||||
{
|
||||
|
||||
//Large IF statement controlled by enable check box
|
||||
if (mEnable)
|
||||
{
|
||||
QPixmap myQPixmap; //to store the north arrow image in
|
||||
QString myFileNameQString = QString(PKGDATAPATH) +
|
||||
QString("/images/north_arrows/default.png");
|
||||
//std::cout << "Trying to load " << myFileNameQString << std::cout;
|
||||
if (myQPixmap.load(myFileNameQString))
|
||||
#ifdef QGISDEBUG
|
||||
std::cout << "Rendering n-arrow" << std::endl;
|
||||
#endif
|
||||
//Large IF statement controlled by enable check box
|
||||
if (mEnable)
|
||||
{
|
||||
// myPainterPixmap.fill();
|
||||
QPainter myQPainter;
|
||||
myQPainter.begin(qGisInterface->getMapCanvas()->canvasPixmap());
|
||||
QPixmap myQPixmap; //to store the north arrow image in
|
||||
QString myFileNameQString = QString(PKGDATAPATH) +
|
||||
QString("/images/north_arrows/default.png");
|
||||
//std::cout << "Trying to load " << myFileNameQString << std::cout;
|
||||
if (myQPixmap.load(myFileNameQString))
|
||||
{
|
||||
|
||||
double centerXDouble = myQPixmap.width()/2;
|
||||
double centerYDouble = myQPixmap.height()/2;
|
||||
//save the current canvas rotation
|
||||
myQPainter.save();
|
||||
//
|
||||
//work out how to shift the image so that it rotates
|
||||
// properly about its center
|
||||
//(x cos a + y sin a - x, -x sin a + y cos a - y)
|
||||
//
|
||||
const double PI = 3.14159265358979323846;
|
||||
double myRadiansDouble = (PI/180) * mRotationInt;
|
||||
int xShift = static_cast<int>((
|
||||
(centerXDouble * cos(myRadiansDouble)) +
|
||||
(centerYDouble * sin(myRadiansDouble))
|
||||
) - centerXDouble);
|
||||
int yShift = static_cast<int>((
|
||||
(-centerXDouble * sin(myRadiansDouble)) +
|
||||
(centerYDouble * cos(myRadiansDouble))
|
||||
) - centerYDouble);
|
||||
double centerXDouble = myQPixmap.width()/2;
|
||||
double centerYDouble = myQPixmap.height()/2;
|
||||
//save the current canvas rotation
|
||||
theQPainter->save();
|
||||
//
|
||||
//work out how to shift the image so that it rotates
|
||||
// properly about its center
|
||||
//(x cos a + y sin a - x, -x sin a + y cos a - y)
|
||||
//
|
||||
const double PI = 3.14159265358979323846;
|
||||
double myRadiansDouble = (PI/180) * mRotationInt;
|
||||
int xShift = static_cast<int>((
|
||||
(centerXDouble * cos(myRadiansDouble)) +
|
||||
(centerYDouble * sin(myRadiansDouble))
|
||||
) - centerXDouble);
|
||||
int yShift = static_cast<int>((
|
||||
(-centerXDouble * sin(myRadiansDouble)) +
|
||||
(centerYDouble * cos(myRadiansDouble))
|
||||
) - centerYDouble);
|
||||
|
||||
//Get canvas dimensions
|
||||
int myHeight = qGisInterface->getMapCanvas()->height();
|
||||
int myWidth = qGisInterface->getMapCanvas()->width();
|
||||
//Get canvas dimensions
|
||||
int myHeight = qGisInterface->getMapCanvas()->height();
|
||||
int myWidth = qGisInterface->getMapCanvas()->width();
|
||||
|
||||
#ifdef QGISDEBUG
|
||||
std::cout << "Rendering n-arrow at " << mPlacement << std::endl;
|
||||
std::cout << "Rendering n-arrow at " << mPlacement << std::endl;
|
||||
#endif
|
||||
//Determine placement of label from form combo box
|
||||
if (mPlacement==tr("Bottom Left"))
|
||||
{
|
||||
myQPainter.translate(0,myHeight-myQPixmap.height());
|
||||
}
|
||||
else if (mPlacement==tr("Top Right"))
|
||||
{
|
||||
myQPainter.translate(myWidth-myQPixmap.width(),0);
|
||||
}
|
||||
else if (mPlacement==tr("Bottom Right"))
|
||||
{
|
||||
myQPainter.translate(myWidth-myQPixmap.width(),
|
||||
myHeight-myQPixmap.height());
|
||||
}
|
||||
else // defaulting to top left
|
||||
{
|
||||
//no need to translate for TL corner because we're already at the origin
|
||||
myQPainter.translate(0, 0);
|
||||
}
|
||||
//rotate the canvas by the north arrow rotation amount
|
||||
myQPainter.rotate( mRotationInt );
|
||||
//Now we can actually do the drawing
|
||||
myQPainter.drawPixmap(xShift,yShift,myQPixmap);
|
||||
//Determine placement of label from form combo box
|
||||
if (mPlacement==tr("Bottom Left"))
|
||||
{
|
||||
theQPainter->translate(0,myHeight-myQPixmap.height());
|
||||
}
|
||||
else if (mPlacement==tr("Top Right"))
|
||||
{
|
||||
theQPainter->translate(myWidth-myQPixmap.width(),0);
|
||||
}
|
||||
else if (mPlacement==tr("Bottom Right"))
|
||||
{
|
||||
theQPainter->translate(myWidth-myQPixmap.width(),
|
||||
myHeight-myQPixmap.height());
|
||||
}
|
||||
else // defaulting to top left
|
||||
{
|
||||
//no need to translate for TL corner because we're already at the origin
|
||||
theQPainter->translate(0, 0);
|
||||
}
|
||||
//rotate the canvas by the north arrow rotation amount
|
||||
theQPainter->rotate( mRotationInt );
|
||||
//Now we can actually do the drawing
|
||||
theQPainter->drawPixmap(xShift,yShift,myQPixmap);
|
||||
|
||||
//unrotate the canvase again
|
||||
myQPainter.restore();
|
||||
myQPainter.end();
|
||||
//unrotate the canvase again
|
||||
theQPainter->restore();
|
||||
|
||||
//bitBlt ( qGisInterface->getMapCanvas()->canvasPixmap(), 0, 0, &myPainterPixmap, 0, 0, -1 , -1, Qt::CopyROP, false);
|
||||
//bitBlt ( qGisInterface->getMapCanvas()->canvasPixmap(), 0, 0, &myPainterPixmap, 0, 0, -1 , -1, Qt::CopyROP, false);
|
||||
|
||||
}
|
||||
else
|
||||
{
|
||||
QFont myQFont("time", 32, QFont::Bold);
|
||||
theQPainter->setFont(myQFont);
|
||||
theQPainter->setPen(Qt::black);
|
||||
theQPainter->drawText(10, 20, QString("Pixmap Not Found"));
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
//myPainterPixmap.fill();
|
||||
QPainter myQPainter;
|
||||
myQPainter.begin(qGisInterface->getMapCanvas()->canvasPixmap());
|
||||
QFont myQFont("time", 32, QFont::Bold);
|
||||
myQPainter.setFont(myQFont);
|
||||
myQPainter.setPen(Qt::black);
|
||||
myQPainter.drawText(10, 20, QString("Pixmap Not Found"));
|
||||
myQPainter.end();
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
// Unload the plugin by cleaning up the GUI
|
||||
@ -255,8 +248,8 @@ void Plugin::setEnabled(bool theBool)
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Required extern functions needed for every plugin
|
||||
/**
|
||||
* Required extern functions needed for every plugin
|
||||
* These functions can be called prior to creating an instance
|
||||
* of the plugin class
|
||||
*/
|
||||
|
||||
@ -1,11 +1,11 @@
|
||||
/***************************************************************************
|
||||
plugin.h
|
||||
plugin.h
|
||||
Functions:
|
||||
-------------------
|
||||
begin : Jan 21, 2004
|
||||
copyright : (C) 2004 by Tim Sutton
|
||||
email : tim@linfiniti.com
|
||||
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
/***************************************************************************
|
||||
@ -21,6 +21,8 @@
|
||||
#define PLUGIN
|
||||
#include "../qgisplugin.h"
|
||||
#include <qwidget.h>
|
||||
#include <qpainter.h>
|
||||
|
||||
|
||||
#include "../../src/qgisapp.h"
|
||||
|
||||
@ -32,11 +34,11 @@
|
||||
class Plugin:public QObject, public QgisPlugin
|
||||
{
|
||||
Q_OBJECT public:
|
||||
/**
|
||||
* Constructor for a plugin. The QgisApp and QgisIface pointers are passed by
|
||||
/**
|
||||
* Constructor for a plugin. The QgisApp and QgisIface pointers are passed by
|
||||
* QGIS when it attempts to instantiate the plugin.
|
||||
* @param qgis Pointer to the QgisApp object
|
||||
* @param qI Pointer to the QgisIface object.
|
||||
* @param qI Pointer to the QgisIface object.
|
||||
*/
|
||||
Plugin(QgisApp * , QgisIface * );
|
||||
//! init the gui
|
||||
@ -47,7 +49,7 @@ class Plugin:public QObject, public QgisPlugin
|
||||
//! Show the dialog box
|
||||
void run();
|
||||
// draw some arbitary text to the screen
|
||||
void renderNorthArrow();
|
||||
void renderNorthArrow(QPainter *);
|
||||
//! Run when the user has set a new rotation
|
||||
void rotationChanged(int);
|
||||
//! Refresh the map display using the mapcanvas exported via the plugin interface
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user