def testReplaceItem(self):
layer = QgsAnnotationLayer(
'test',
QgsAnnotationLayer.LayerOptions(
QgsProject.instance().transformContext()))
polygon_item_id = layer.addItem(
QgsAnnotationPolygonItem(
QgsPolygon(
QgsLineString([
QgsPoint(12, 13),
QgsPoint(14, 13),
QgsPoint(14, 15),
QgsPoint(12, 13)
]))))
linestring_item_id = layer.addItem(
QgsAnnotationLineItem(
QgsLineString(
[QgsPoint(11, 13),
QgsPoint(12, 13),
QgsPoint(12, 15)])))
marker_item_id = layer.addItem(
QgsAnnotationMarkerItem(QgsPoint(12, 13)))
self.assertEqual(
layer.item(polygon_item_id).geometry().asWkt(),
'Polygon ((12 13, 14 13, 14 15, 12 13))')
self.assertEqual(
layer.item(linestring_item_id).geometry().asWkt(),
'LineString (11 13, 12 13, 12 15)')
self.assertEqual(
layer.item(marker_item_id).geometry().asWkt(), 'POINT(12 13)')
layer.replaceItem(
linestring_item_id,
QgsAnnotationLineItem(
QgsLineString(
[QgsPoint(21, 13),
QgsPoint(22, 13),
QgsPoint(22, 15)])))
self.assertEqual(
layer.item(polygon_item_id).geometry().asWkt(),
'Polygon ((12 13, 14 13, 14 15, 12 13))')
self.assertEqual(
layer.item(linestring_item_id).geometry().asWkt(),
'LineString (21 13, 22 13, 22 15)')
self.assertEqual(
layer.item(marker_item_id).geometry().asWkt(), 'POINT(12 13)')
def test_rendered_item_results_remove_outdated(self):
"""
Test that outdated results are removed from rendered item result caches
"""
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
canvas.setCachingEnabled(True)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsAnnotationLayer(
'test',
QgsAnnotationLayer.LayerOptions(
QgsProject.instance().transformContext()))
self.assertTrue(layer.isValid())
layer2 = QgsAnnotationLayer(
'test',
QgsAnnotationLayer.LayerOptions(
QgsProject.instance().transformContext()))
self.assertTrue(layer2.isValid())
item = QgsAnnotationPolygonItem(
QgsPolygon(
QgsLineString([
QgsPoint(11.5, 13),
QgsPoint(12, 13),
QgsPoint(12, 13.5),
QgsPoint(11.5, 13)
])))
item.setSymbol(
QgsFillSymbol.createSimple({
'color': '200,100,100',
'outline_color': 'black',
'outline_width': '2'
}))
item.setZIndex(1)
i1_id = layer.addItem(item)
item = QgsAnnotationLineItem(
QgsLineString(
[QgsPoint(11, 13),
QgsPoint(12, 13),
QgsPoint(12, 15)]))
item.setZIndex(2)
i2_id = layer.addItem(item)
item = QgsAnnotationMarkerItem(QgsPoint(12, 13))
item.setZIndex(3)
i3_id = layer2.addItem(item)
layer.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
layer2.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
canvas.setLayers([layer, layer2])
canvas.setExtent(QgsRectangle(10, 10, 18, 18))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
results = canvas.renderedItemResults()
self.assertCountEqual([i.itemId() for i in results.renderedItems()],
[i1_id, i2_id, i3_id])
# now try modifying an annotation in the layer -- it will redraw, and we don't want to reuse any previously
# cached rendered item results for this layer!
item = QgsAnnotationPolygonItem(
QgsPolygon(
QgsLineString([
QgsPoint(11.5, 13),
QgsPoint(12.5, 13),
QgsPoint(12.5, 13.5),
QgsPoint(11.5, 13)
])))
item.setZIndex(1)
layer.replaceItem(i1_id, item)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
item = QgsAnnotationMarkerItem(QgsPoint(17, 18))
item.setZIndex(3)
layer2.replaceItem(i3_id, item)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
results = canvas.renderedItemResults()
items_in_bounds = results.renderedAnnotationItemsInBounds(
QgsRectangle(10, 10, 15, 15))
self.assertCountEqual([i.itemId() for i in items_in_bounds],
[i1_id, i2_id])
items_in_bounds = results.renderedAnnotationItemsInBounds(
QgsRectangle(15, 15, 20, 20))
self.assertCountEqual([i.itemId() for i in items_in_bounds], [i3_id])