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Created map tool for changing grass region, so QgsMapToolEmitPoint is…
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… not used anymore and can be finally removed.

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@5168 c8812cc2-4d05-0410-92ff-de0c093fc19c
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wonder committed Apr 4, 2006
1 parent 96b7fc9 commit 708610b
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Showing 2 changed files with 91 additions and 48 deletions.
131 changes: 87 additions & 44 deletions src/plugins/grass/qgsgrassregion.cpp
View file
Expand Up @@ -64,6 +64,88 @@ extern "C" {

bool QgsGrassRegion::mRunning = false;

/** map tool which uses rubber band for changing grass region */
class QgsGrassRegionEdit : public QgsMapTool
{
public:
QgsGrassRegionEdit(QgsGrassRegion* reg)
: QgsMapTool(reg->mCanvas), mRegion(reg)
{
mDraw = false;
mRubberBand = new QRubberBand ( QRubberBand::Rectangle, mCanvas );
}

~QgsGrassRegionEdit()
{
delete mRubberBand;
}

//! mouse click in map canvas
void canvasPressEvent(QMouseEvent * event)
{
QgsPoint point = toMapCoords(event->pos());
double x = point.x();
double y = point.y();

#ifdef QGISDEBUG
std::cerr << "QgsGrassRegionEdit::canvasPressEvent()" << std::endl;
#endif

if ( !mDraw ) { // first corner
mRegion->mX = x;
mRegion->mY = y;

mRegion->draw ( x, y, x, y );
mDraw = true;
} else {
mRegion->draw ( mRegion->mX, mRegion->mY, x, y );
mDraw = false;
}
mRubberBand->show();
}

//! mouse movement in map canvas
void canvasMoveEvent(QMouseEvent * event)
{
QgsPoint point = toMapCoords(event->pos());

#ifdef QGISDEBUG
std::cerr << "QgsGrassRegionEdit::canvasMoveEvent()" << std::endl;
#endif

if ( !mDraw ) return;
mRegion->draw ( mRegion->mX, mRegion->mY, point.x(), point.y() );
}

//! called when map tool is about to get inactive
void deactivate()
{
mRubberBand->hide();

QgsMapTool::deactivate();
}

void setRegion(const QgsPoint& ul, const QgsPoint& lr)
{
QPoint qul = toCanvasCoords(ul);
QPoint qlr = toCanvasCoords(lr);
mRubberBand->setGeometry ( QRect(qul,qlr));
}


private:
//! Rubber band for selecting grass region
QRubberBand* mRubberBand;

//! Status of input from canvas
bool mDraw;

QgsGrassRegion* mRegion;
};




QgsGrassRegion::QgsGrassRegion ( QgsGrassPlugin *plugin, QgisApp *qgisApp, QgisIface *iface,
QWidget * parent, Qt::WFlags f )
:QDialog(parent, f), QgsGrassRegionBase ( )
Expand All @@ -80,7 +162,6 @@ QgsGrassRegion::QgsGrassRegion ( QgsGrassPlugin *plugin, QgisApp *qgisApp, Qgis
mInterface = iface;
mCanvas = mInterface->getMapCanvas();
restorePosition();
mDraw = false;
mUpdatingGui = false;
mDisplayed = false;

Expand Down Expand Up @@ -131,8 +212,6 @@ QgsGrassRegion::QgsGrassRegion ( QgsGrassPlugin *plugin, QgisApp *qgisApp, Qgis

setGuiValues();

connect( mCanvas, SIGNAL(xyClickCoordinates(QgsPoint &)), this, SLOT(mouseEventReceiverClick(QgsPoint &)));
connect( mCanvas, SIGNAL(xyCoordinates(QgsPoint &)), this, SLOT(mouseEventReceiverMove(QgsPoint &)));
connect( mCanvas, SIGNAL(renderComplete(QPainter *)), this, SLOT(postRender(QPainter *)));

// Connect entries
Expand All @@ -145,8 +224,6 @@ QgsGrassRegion::QgsGrassRegion ( QgsGrassPlugin *plugin, QgisApp *qgisApp, Qgis
connect( mRows, SIGNAL(textChanged(const QString &)), this, SLOT(rowsChanged(const QString &)));
connect( mCols, SIGNAL(textChanged(const QString &)), this, SLOT(colsChanged(const QString &)));

mCanvas->setMapTool(new QgsMapToolEmitPoint(mCanvas));

// Symbology
QPen pen = mPlugin->regionPen();
QPalette palette = mColorButton->palette();
Expand All @@ -157,7 +234,8 @@ QgsGrassRegion::QgsGrassRegion ( QgsGrassPlugin *plugin, QgisApp *qgisApp, Qgis
mWidthSpinBox->setValue( pen.width() );
connect( mWidthSpinBox, SIGNAL(valueChanged(int)), this, SLOT(changeWidth()));

mRubberBand = new QRubberBand ( QRubberBand::Rectangle, mCanvas );
mRegionEdit = new QgsGrassRegionEdit(this); // will be deleted by map canvas
mCanvas->setMapTool(mRegionEdit);

setAttribute ( Qt::WA_DeleteOnClose );
displayRegion();
Expand Down Expand Up @@ -215,7 +293,6 @@ void QgsGrassRegion::setGuiValues( bool north, bool south, bool east, bool west,

QgsGrassRegion::~QgsGrassRegion ()
{
delete mRubberBand;
mRunning = false;
}

Expand Down Expand Up @@ -325,33 +402,7 @@ void QgsGrassRegion::radioChanged()
mCols->setEnabled(false);
}
}
void QgsGrassRegion::mouseEventReceiverClick( QgsPoint & point )
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassRegion::mouseEventReceiverClick()" << std::endl;
#endif

if ( !mDraw ) { // first corner
mX = point.x();
mY = point.y();

draw ( mX, mY, mX, mY );
mDraw = true;
} else {
draw ( mX, mY, point.x(), point.y() );
mDraw = false;
}
mRubberBand->show();
}

void QgsGrassRegion::mouseEventReceiverMove( QgsPoint & point )
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassRegion::mouseEventReceiverMove()" << std::endl;
#endif
if ( !mDraw ) return;
draw ( mX, mY, point.x(), point.y() );
}

void QgsGrassRegion::draw ( double x1, double y1, double x2, double y2 )
{
Expand Down Expand Up @@ -390,15 +441,7 @@ void QgsGrassRegion::displayRegion()
QgsPoint ul(mWindow.west, mWindow.north);
QgsPoint lr(mWindow.east, mWindow.south);

QgsMapToPixel *transform = mCanvas->getCoordinateTransform();

transform->transform( &ul );
transform->transform( &lr );

QPoint qul ( static_cast<int>(ul.x()), static_cast<int>(ul.y()) );
QPoint qlr ( static_cast<int>(lr.x()), static_cast<int>(lr.y()) );

mRubberBand->setGeometry ( QRect(qul,qlr));
mRegionEdit->setRegion(ul, lr);

mDisplayed = true;

Expand Down Expand Up @@ -438,7 +481,7 @@ void QgsGrassRegion::accept()
}

saveWindowLocation();
mRubberBand->hide();
mQgisApp->pan(); // change to pan tool
mRunning = false;
close();
//delete this;
Expand All @@ -447,7 +490,7 @@ void QgsGrassRegion::accept()
void QgsGrassRegion::reject()
{
saveWindowLocation();
mRubberBand->hide();
mQgisApp->pan(); // change to pan tool
mRunning = false;
close();
//delete this;
Expand Down
8 changes: 4 additions & 4 deletions src/plugins/grass/qgsgrassregion.h
View file
Expand Up @@ -25,6 +25,7 @@ class QgisIface;
class QgsMapCanvas;
class Q3ButtonGroup;
class QgsPoint;
class QgsGrassRegionEdit;
#include "ui_qgsgrassregionbase.h"
#include <QDialog>
#include <QRubberBand>
Expand Down Expand Up @@ -119,9 +120,6 @@ public slots:
//! Draw region
void draw ( double x1, double y1, double x2, double y2 );

//! Status of input from canvas
bool mDraw;

//! First corner coordinates
double mX;
double mY;
Expand All @@ -141,7 +139,9 @@ public slots:
// Format N, S, E, W value
QString formatEdge ( double v );

QRubberBand *mRubberBand;
QgsGrassRegionEdit* mRegionEdit;

friend class QgsGrassRegionEdit;
};

#endif // QGSGRASSREGION_H

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