[FEATURE] allow to configure maximum request size for WMS requests (f…

…ixes #16182)

Hardwired setting was 2000, which is still default.

python/core/raster/qgsrasterdataprovider.sip

@@ -312,6 +312,10 @@ class QgsRasterDataProvider : QgsDataProvider, QgsRasterInterface
     static QString identifyFormatLabel( QgsRaster::IdentifyFormat format );
     static Capability identifyFormatToCapability( QgsRaster::IdentifyFormat format );
 
+    //! Step width and height for raster iterations
+    virtual int stepWidth() const;
+    virtual int stepHeight() const;
+
   signals:
     /** Emit a signal to notify of the progress event.
       * Emitted theProgress is in percents (0.0-100.0) */

src/core/raster/qgsrasterdataprovider.h

@@ -441,6 +441,10 @@ class CORE_EXPORT QgsRasterDataProvider : public QgsDataProvider, public QgsRast
     static QString identifyFormatLabel( QgsRaster::IdentifyFormat format );
     static Capability identifyFormatToCapability( QgsRaster::IdentifyFormat format );
 
+    //! Step width and height for raster iterations
+    virtual int stepWidth() const { return 2000; }
+    virtual int stepHeight() const { return 2000; }
+
   signals:
 
     /** Emit a signal to notify of the progress event.

src/core/raster/qgsrasteriterator.cpp

@@ -16,13 +16,24 @@
 #include "qgsrasterinterface.h"
 #include "qgsrasterprojector.h"
 #include "qgsrasterviewport.h"
+#include "qgsrasterdataprovider.h"
 
 QgsRasterIterator::QgsRasterIterator( QgsRasterInterface* input )
     : mInput( input )
     , mFeedback( nullptr )
     , mMaximumTileWidth( 2000 )
     , mMaximumTileHeight( 2000 )
 {
+  for ( QgsRasterInterface *ri = input; ri; ri = ri->input() )
+  {
+    QgsRasterDataProvider *rdp = dynamic_cast<QgsRasterDataProvider*>( ri );
+    if ( rdp )
+    {
+      mMaximumTileWidth = rdp->stepWidth();
+      mMaximumTileHeight = rdp->stepHeight();
+      break;
+    }
+  }
 }
 
 void QgsRasterIterator::startRasterRead( int bandNumber, int nCols, int nRows, const QgsRectangle& extent, QgsRasterBlockFeedback* feedback )

src/providers/wms/qgswmscapabilities.cpp

@@ -117,6 +117,14 @@ bool QgsWmsSettings::parseUri( const QString& uriString )
     mMaxHeight = uri.param( QStringLiteral( "maxHeight" ) ).toInt();
   }
 
+  mStepWidth = 2000;
+  mStepHeight = 2000;
+  if ( uri.hasParam( QStringLiteral( "stepWidth" ) ) && uri.hasParam( QStringLiteral( "stepHeight" ) ) )
+  {
+    mStepWidth = uri.param( QStringLiteral( "stepWidth" ) ).toInt();
+    mStepHeight = uri.param( QStringLiteral( "stepHeight" ) ).toInt();
+  }
+
   if ( uri.hasParam( QStringLiteral( "tileMatrixSet" ) ) )
   {
     mTiled = true;

src/providers/wms/qgswmscapabilities.h

@@ -566,6 +566,12 @@ class QgsWmsSettings
     int mMaxWidth;
     int mMaxHeight;
 
+    /**
+     * Step size when iterating the layer
+     */
+    int mStepWidth;
+    int mStepHeight;
+
     //! Data source URI of the WMS for this layer
     QString mHttpUri;
 

src/providers/wms/qgswmsprovider.h

@@ -226,6 +226,9 @@ class QgsWmsProvider : public QgsRasterDataProvider
      */
     static QString prepareUri( QString uri );
 
+    int stepWidth() const override { return mSettings.mStepWidth; }
+    int stepHeight() const override { return mSettings.mStepHeight; }
+
     //! Helper struct for tile requests
     struct TileRequest
     {
@@ -309,7 +312,6 @@ class QgsWmsProvider : public QgsRasterDataProvider
 
     void parseOperationMetadata( QDomElement const &e );
 
-
     /**
      * \brief Calculates the combined extent of the layers selected by layersDrawn
      *

src/providers/wms/qgswmssourceselect.cpp

@@ -75,6 +75,8 @@ QgsWMSSourceSelect::QgsWMSSourceSelect( QWidget * parent, Qt::WindowFlags fl, bo
 
   mTileWidth->setValidator( new QIntValidator( 0, 9999, this ) );
   mTileHeight->setValidator( new QIntValidator( 0, 9999, this ) );
+  mStepWidth->setValidator( new QIntValidator( 0, 999999, this ) );
+  mStepHeight->setValidator( new QIntValidator( 0, 999999, this ) );
   mFeatureCount->setValidator( new QIntValidator( 0, 9999, this ) );
 
   mImageFormatGroup = new QButtonGroup;
@@ -492,6 +494,12 @@ void QgsWMSSourceSelect::addClicked()
     uri.setParam( QStringLiteral( "maxHeight" ), mTileHeight->text() );
   }
 
+  if ( mStepWidth->text().toInt() > 0 && mStepHeight->text().toInt() > 0 )
+  {
+    uri.setParam( QStringLiteral( "stepWidth" ), mStepWidth->text() );
+    uri.setParam( QStringLiteral( "stepHeight" ), mStepHeight->text() );
+  }
+
   if ( lstTilesets->selectedItems().isEmpty() )
   {
     collectSelectedLayers( layers, styles, titles );

src/ui/qgswmssourceselectbase.ui

@@ -15,8 +15,7 @@
   </property>
   <property name="windowIcon">
    <iconset>
-    <normaloff/>
-   </iconset>
+    <normaloff>.</normaloff>.</iconset>
   </property>
   <property name="sizeGripEnabled">
    <bool>true</bool>
@@ -66,12 +65,12 @@
        </item>
        <item row="1" column="0" colspan="2">
         <widget class="QPushButton" name="btnConnect">
-        <property name="toolTip">
-          <string>Connect to selected service</string>
-         </property>
          <property name="enabled">
           <bool>false</bool>
          </property>
+         <property name="toolTip">
+          <string>Connect to selected service</string>
+         </property>
          <property name="text">
           <string>C&amp;onnect</string>
          </property>
@@ -89,25 +88,25 @@
        </item>
        <item row="1" column="4">
         <widget class="QPushButton" name="btnEdit">
-         <property name="toolTip">
-          <string>Edit selected service connection</string>
-         </property>
          <property name="enabled">
           <bool>false</bool>
          </property>
+         <property name="toolTip">
+          <string>Edit selected service connection</string>
+         </property>
          <property name="text">
           <string>Edit</string>
          </property>
         </widget>
        </item>
        <item row="1" column="5">
         <widget class="QPushButton" name="btnDelete">
-         <property name="toolTip">
-          <string>Remove connection to selected service</string>
-         </property>
          <property name="enabled">
           <bool>false</bool>
          </property>
+         <property name="toolTip">
+          <string>Remove connection to selected service</string>
+         </property>
          <property name="text">
           <string>Remove</string>
          </property>
@@ -220,17 +219,44 @@
           <string>Options</string>
          </property>
          <layout class="QGridLayout">
+          <item row="1" column="0">
+           <widget class="QLabel" name="label_2">
+            <property name="text">
+             <string>Tile size</string>
+            </property>
+            <property name="buddy">
+             <cstring>mTileWidth</cstring>
+            </property>
+           </widget>
+          </item>
+          <item row="5" column="0">
+           <widget class="QCheckBox" name="mContextualLegendCheckbox">
+            <property name="text">
+             <string>Use contextual WMS Legend</string>
+            </property>
+           </widget>
+          </item>
           <item row="3" column="0" colspan="2">
-           <widget class="QLabel" name="labelCoordRefSys">
+           <widget class="QLabel" name="label_3">
             <property name="text">
-             <string>Coordinate Reference System</string>
+             <string>Feature limit for GetFeatureInfo</string>
             </property>
             <property name="buddy">
-             <cstring>btnChangeSpatialRefSys</cstring>
+             <cstring>mFeatureCount</cstring>
             </property>
            </widget>
           </item>
+          <item row="1" column="1">
+           <widget class="QLineEdit" name="mTileWidth"/>
+          </item>
           <item row="3" column="2">
+           <widget class="QLineEdit" name="mFeatureCount">
+            <property name="text">
+             <string>10</string>
+            </property>
+           </widget>
+          </item>
+          <item row="4" column="2">
            <widget class="QPushButton" name="btnChangeSpatialRefSys">
             <property name="enabled">
              <bool>false</bool>
@@ -240,45 +266,34 @@
             </property>
            </widget>
           </item>
-          <item row="1" column="1">
-           <widget class="QLineEdit" name="mTileWidth"/>
-          </item>
-          <item row="1" column="0">
-           <widget class="QLabel" name="label_2">
+          <item row="4" column="0" colspan="2">
+           <widget class="QLabel" name="labelCoordRefSys">
             <property name="text">
-             <string>Tile size</string>
+             <string>Coordinate Reference System</string>
             </property>
             <property name="buddy">
-             <cstring>mTileWidth</cstring>
+             <cstring>btnChangeSpatialRefSys</cstring>
             </property>
            </widget>
           </item>
           <item row="1" column="2">
            <widget class="QLineEdit" name="mTileHeight"/>
           </item>
-          <item row="2" column="0" colspan="2">
-           <widget class="QLabel" name="label_3">
+          <item row="2" column="0">
+           <widget class="QLabel" name="label_4">
             <property name="text">
-             <string>Feature limit for GetFeatureInfo</string>
+             <string>Request step size</string>
             </property>
             <property name="buddy">
-             <cstring>mFeatureCount</cstring>
+             <cstring>mTileWidth</cstring>
             </property>
            </widget>
           </item>
-          <item row="2" column="2">
-           <widget class="QLineEdit" name="mFeatureCount">
-            <property name="text">
-             <string>10</string>
-            </property>
-           </widget>
+          <item row="2" column="1">
+           <widget class="QLineEdit" name="mStepWidth"/>
           </item>
-          <item row="4" column="0">
-           <widget class="QCheckBox" name="mContextualLegendCheckbox">
-            <property name="text">
-             <string>Use contextual WMS Legend</string>
-            </property>
-           </widget>
+          <item row="2" column="2">
+           <widget class="QLineEdit" name="mStepHeight"/>
           </item>
          </layout>
         </widget>
@@ -496,19 +511,20 @@
   <tabstop>lstLayers</tabstop>
   <tabstop>mTileWidth</tabstop>
   <tabstop>mTileHeight</tabstop>
+  <tabstop>mStepWidth</tabstop>
+  <tabstop>mStepHeight</tabstop>
   <tabstop>mFeatureCount</tabstop>
   <tabstop>btnChangeSpatialRefSys</tabstop>
   <tabstop>mContextualLegendCheckbox</tabstop>
-  <tabstop>mLayerUpButton</tabstop>
-  <tabstop>mLayerDownButton</tabstop>
-  <tabstop>mLayerOrderTreeWidget</tabstop>
+  <tabstop>leLayerName</tabstop>
   <tabstop>lstTilesets</tabstop>
   <tabstop>leSearchTerm</tabstop>
   <tabstop>btnSearch</tabstop>
   <tabstop>tableWidgetWMSList</tabstop>
   <tabstop>btnAddWMS</tabstop>
-  <tabstop>leLayerName</tabstop>
-  <tabstop>buttonBox</tabstop>
+  <tabstop>mLayerOrderTreeWidget</tabstop>
+  <tabstop>mLayerDownButton</tabstop>
+  <tabstop>mLayerUpButton</tabstop>
  </tabstops>
  <resources/>
  <connections>