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[FEATURE] wms-c scale slider and more selection improvements
git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@13184 c8812cc2-4d05-0410-92ff-de0c093fc19c
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jef
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Mar 28, 2010
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| /*************************************************************************** | ||
| qgstilescalewidget.cpp - slider to choose wms-c resolutions | ||
| ------------------- | ||
| begin : 28 Mar 2010 | ||
| copyright: (C) 2010 Juergen E. Fischer < jef at norbit dot de > | ||
| ***************************************************************************/ | ||
|
|
||
| /*************************************************************************** | ||
| * * | ||
| * 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: $ */ | ||
|
|
||
| #include "qgstilescalewidget.h" | ||
| #include "qgsmapcanvas.h" | ||
| #include "qgsrasterlayer.h" | ||
| #include "qgslogger.h" | ||
|
|
||
| QgsTileScaleWidget::QgsTileScaleWidget( QgsMapCanvas * mapCanvas, QWidget * parent, Qt::WindowFlags f ) | ||
| : QWidget( parent, f ) | ||
| , mMapCanvas( mapCanvas ) | ||
| { | ||
| setupUi( this ); | ||
|
|
||
| connect( mMapCanvas, SIGNAL( scaleChanged( double ) ), this, SLOT( scaleChanged( double ) ) ); | ||
|
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| layerChanged( mMapCanvas->currentLayer() ); | ||
| } | ||
|
|
||
| void QgsTileScaleWidget::layerChanged( QgsMapLayer *layer ) | ||
| { | ||
| QgsRasterLayer *rl = qobject_cast<QgsRasterLayer *>( layer ); | ||
|
|
||
| if ( !rl || rl->providerKey() != "wms" || !rl->publicSource().contains( "tiled=" ) ) | ||
| { | ||
| mResolutions.clear(); | ||
| mSlider->setDisabled( true ); | ||
| } | ||
| else | ||
| { | ||
| QString uri = rl->publicSource().mid( rl->publicSource().indexOf( "tiled=" ) + 6 ); | ||
| int pos = uri.indexOf( "," ); | ||
| if ( pos >= 0 ) | ||
| uri = uri.left( pos ); | ||
| QStringList params = uri.split( ";" ); | ||
|
|
||
| params.takeFirst(); | ||
| params.takeFirst(); | ||
|
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| mResolutions.clear(); | ||
| foreach( QString r, params ) | ||
| mResolutions << r.toDouble(); | ||
| qSort( mResolutions ); | ||
|
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||
| for ( int i = 0; i < mResolutions.size(); i++ ) | ||
| QgsDebugMsg( QString( "found resolution %1: %2" ).arg( i ).arg( mResolutions[i] ) ); | ||
|
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||
| mSlider->setRange( 0, mResolutions.size() - 1 ); | ||
| mSlider->setTickInterval( 1 ); | ||
| mSlider->setInvertedAppearance( true ); | ||
| mSlider->setPageStep( 1 ); | ||
| mSlider->setTracking( false ); | ||
|
|
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| scaleChanged( mMapCanvas->scale() ); | ||
|
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| mSlider->setEnabled( true ); | ||
| show(); | ||
| } | ||
| } | ||
|
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| void QgsTileScaleWidget::scaleChanged( double scale ) | ||
| { | ||
| if ( mResolutions.size() == 0 ) | ||
| return; | ||
|
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| double mupp = mMapCanvas->mapUnitsPerPixel(); | ||
| QgsDebugMsg( QString( "resolution changed to %1" ).arg( mupp ) ); | ||
|
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||
| int i; | ||
| for ( i = 0; i < mResolutions.size() && mResolutions[i] < mupp; i++ ) | ||
| QgsDebugMsg( QString( "test resolution %1: %2 d:%3" ).arg( i ).arg( mResolutions[i] ).arg( mupp - mResolutions[i] ) ); | ||
|
|
||
| if ( i == mResolutions.size() || | ||
| ( i > 0 && mResolutions[i] - mupp > mupp - mResolutions[i-1] ) ) | ||
| { | ||
| QgsDebugMsg( "previous resolution" ); | ||
| i--; | ||
| } | ||
|
|
||
| QgsDebugMsg( QString( "selected resolution %1: %2" ).arg( i ).arg( mResolutions[i] ) ); | ||
| mSlider->setValue( i ); | ||
| } | ||
|
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| void QgsTileScaleWidget::on_mSlider_valueChanged( int value ) | ||
| { | ||
| QgsDebugMsg( QString( "slider released at %1: %2" ).arg( mSlider->value() ).arg( mResolutions[mSlider->value()] ) ); | ||
| mMapCanvas->zoomByFactor( mResolutions[mSlider->value()] / mMapCanvas->mapUnitsPerPixel() ); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| /*************************************************************************** | ||
| qgstilescalewidget.cpp - slider to choose wms-c resolutions | ||
| ------------------- | ||
| begin : 28 Mar 2010 | ||
| copyright: (C) 2010 Juergen E. Fischer < jef at norbit dot de > | ||
| ***************************************************************************/ | ||
|
|
||
| /*************************************************************************** | ||
| * * | ||
| * 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 QGSTILESCALEWIDGET_H | ||
| #define QGSTILESCALEWIDGET_H | ||
|
|
||
| #include "ui_qgstilescalewidgetbase.h" | ||
|
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| class QgsMapCanvas; | ||
| class QgsMapLayer; | ||
| class QwtSlider; | ||
|
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| class QgsTileScaleWidget : public QWidget, private Ui::QgsTileScaleWidget | ||
| { | ||
| Q_OBJECT | ||
| public: | ||
| QgsTileScaleWidget( QgsMapCanvas *mapCanvas, QWidget * parent = 0, Qt::WindowFlags f = 0 ); | ||
|
|
||
| public slots: | ||
| void layerChanged( QgsMapLayer *layer ); | ||
| void scaleChanged( double ); | ||
| void on_mSlider_valueChanged( int ); | ||
|
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||
| private: | ||
| QgsMapCanvas *mMapCanvas; | ||
| QList<double> mResolutions; | ||
| }; | ||
|
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| #endif // QGSTILESCALEWIDGET |
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