Class: QgsOuterGlowEffect¶
-
class
qgis.core.
QgsOuterGlowEffect
¶ Bases:
QgsGlowEffect
A paint effect which draws a glow outside of a picture.
Methods
- rtype
QgsOuterGlowEffect
Creates a new
QgsOuterGlowEffect
effect from a properties string map.Draws the source QPicture onto the specified painter.
Applies a workaround to a QPainter to avoid an issue with incorrect scaling when drawing QPictures.
Returns the offset which should be used when drawing the source image on to a destination render context.
- rtype
bool
Returns the source QPicture.
Returns the source QPicture rendered to a new QImage.
- rtype
str
-
boundingRect
(self, rect: QRectF, context: QgsRenderContext) → QRectF¶
-
clone
(self) → QgsOuterGlowEffect¶ - Return type
-
create
(map: Dict[str, str]) → QgsPaintEffect¶ Creates a new
QgsOuterGlowEffect
effect from a properties string map.- Parameters
map (Dict[str) – encoded properties string map
- Return type
- Returns
new QgsOuterGlowEffect
-
draw
(self, context: QgsRenderContext)¶
-
drawSource
(self, painter: QPainter)¶ Draws the source QPicture onto the specified painter. Handles scaling of the picture to account for the destination painter’s DPI.
- Parameters
painter – destination painter
See also
See also
-
fixQPictureDpi
(self, painter: QPainter)¶ Applies a workaround to a QPainter to avoid an issue with incorrect scaling when drawing QPictures. This may need to be called by derived classes prior to rendering results onto a painter.
- Parameters
painter – destination painter
-
imageOffset
(self, context: QgsRenderContext) → QPointF¶ Returns the offset which should be used when drawing the source image on to a destination render context.
- Parameters
context – destination render context
- Returns
point offset for image top left corner
See also
-
shadeExterior
(self) → bool¶ - Return type
bool
-
source
(self) → QPicture¶ Returns the source QPicture. The
draw()
member can utilize this when drawing the effect.- Returns
source QPicture
See also
See also
-
sourceAsImage
(self, context: QgsRenderContext) → QImage¶ Returns the source QPicture rendered to a new QImage. The
draw()
member can utilize this when drawing the effect. The image will be padded or cropped from the original source QPicture by the results of theboundingRect()
method. The result is cached to speed up subsequent calls to sourceAsImage.- Returns
source QPicture rendered to an image
See also
See also
See also
See also
-
type
(self) → str¶ - Return type
str