[processing] tiles_xyz: get rid of unlabeled areas at the edges of me…

…tatiles
qgis · Jun 7, 2019 · 228040d · 228040d
1 parent 4013925
commit 228040d
Showing 1 changed file with 7 additions and 12 deletions.
diff --git a/python/plugins/processing/algs/qgis/TilesXYZ.py b/python/plugins/processing/algs/qgis/TilesXYZ.py
@@ -43,7 +43,8 @@
                        QgsMapSettings,
                        QgsCoordinateTransform,
                        QgsCoordinateReferenceSystem,
-                       QgsMapRendererCustomPainterJob)
+                       QgsMapRendererCustomPainterJob,
+                       QgsLabelingEngineSettings)
 from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
 
 
@@ -196,6 +197,11 @@ def generate(self, writer, parameters, context, feedback):
         if self.tile_format == 'PNG':
             settings.setBackgroundColor(QColor(Qt.transparent))
 
+        # disable partial labels (they would be cut at the edge of tiles)
+        labeling_engine_settings = settings.labelingEngineSettings()
+        labeling_engine_settings.setFlag(QgsLabelingEngineSettings.UsePartialCandidates, False)
+        settings.setLabelingEngineSettings(labeling_engine_settings)
+
         self.wgs_extent = src_to_wgs.transformBoundingBox(extent)
         self.wgs_extent = [self.wgs_extent.xMinimum(), self.wgs_extent.yMinimum(), self.wgs_extent.xMaximum(),
                            self.wgs_extent.yMaximum()]
@@ -233,17 +239,6 @@ def generate(self, writer, parameters, context, feedback):
                 settings.setExtent(wgs_to_dest.transformBoundingBox(extent))
                 settings.setOutputSize(size)
 
-                if hasattr(settings, 'setLabelBoundaryGeometry'):
-                    label_area = QgsRectangle(settings.extent())
-                    lab_buffer = label_area.width() * (lab_buffer_px / size.width())
-                    label_area.set(
-                        label_area.xMinimum() + lab_buffer,
-                        label_area.yMinimum() + lab_buffer,
-                        label_area.xMaximum() - lab_buffer,
-                        label_area.yMaximum() - lab_buffer
-                    )
-                    settings.setLabelBoundaryGeometry(QgsGeometry.fromRect(label_area))
-
                 image = QImage(size, QImage.Format_ARGB32_Premultiplied)
                 image.fill(Qt.transparent)
                 dpm = settings.outputDpi() / 25.4 * 1000