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Zoom to WMS Extent #732

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May 26, 2020
Merged

Zoom to WMS Extent #732

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c8cb8dc
add check for wms extent in project file
tomasMizera May 26, 2020
b53b855
set extent in one line
tomasMizera May 26, 2020
7d1cb66
updated the relevant part of the doc
saberraz May 26, 2020
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24 changes: 18 additions & 6 deletions app/loader.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -111,17 +111,29 @@ void Loader::zoomToProject( QgsQuickMapSettings *mapSettings )
{
if ( !mapSettings )
{
qDebug() << "Cannot zoom to layers extent, mapSettings is not defined";
qDebug() << "Cannot zoom to extent, mapSettings is not defined";
return;
}

const QVector<QgsMapLayer *> layers = mProject->layers<QgsMapLayer *>();
QgsRectangle extent;
for ( const QgsMapLayer *layer : layers )

// Check if WMSExtent is set in project
bool hasWMS;
QStringList WMSExtent = mProject->readListEntry( "WMSExtent", QStringLiteral( "/" ), QStringList(), &hasWMS );

if ( hasWMS && ( WMSExtent.length() == 4 ) )
{
extent.set( WMSExtent[0].toDouble(), WMSExtent[1].toDouble(), WMSExtent[2].toDouble(), WMSExtent[3].toDouble() );
}
else // set layers extent
{
QgsRectangle layerExtent = mapSettings->mapSettings().layerExtentToOutputExtent( layer, layer->extent() );
extent.combineExtentWith( layerExtent );
const QVector<QgsMapLayer *> layers = mProject->layers<QgsMapLayer *>();
for ( const QgsMapLayer *layer : layers )
{
QgsRectangle layerExtent = mapSettings->mapSettings().layerExtentToOutputExtent( layer, layer->extent() );
extent.combineExtentWith( layerExtent );
}
}

if ( extent.isEmpty() )
{
extent.grow( mProject->crs().isGeographic() ? 0.01 : 1000.0 );
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5 changes: 5 additions & 0 deletions docs/users/project_config.md
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Expand Up @@ -24,6 +24,11 @@ If you are using a vector layer for background layer:

- All vector layers not intended to be used as survey layers, have to be set as read-only. To make a vector layer read-only in QGIS, from the main menu select Project \> Properties. Within the window, select Data Source tab and select the Read-only option for the layers you do not want to be used as survey layer in Input.

## Project extent
In Input app, there is an option to zoom to the project extent. If not set, Input zooms to all visible layers. This is not particularly convenient when you have a layer with a large/global extent (e.g. Open Street Map).

To set the project extent: from **Project** > **Properties**, select **QGIS Server** (not the most obvious location!). Under **WMS capabilities** select the option for **Advertised extent** and either enter the coordinate extent of your project bounding box or use the canvas extent.

## Survey layer

Vector layers can be used as survey layer
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