def layerRenderByComposer(self, layer, outName):
self.hideOtherLayers(layer)
mapRenderer = self.iface.mapCanvas().mapRenderer()
mapRenderer.setLayerSet([layer.id()])
c = QgsComposition(mapRenderer)
c.setPlotStyle(QgsComposition.Print)
c.setPaperSize(297, 210)
c.setPrintResolution(300)
x, y = 0, 0
w, h = c.paperWidth(), c.paperHeight()
composerMap = QgsComposerMap(c, x, y, w, h)
composerMap.setMapCanvas(self.iface.mapCanvas())
c.addItem(composerMap)
legend = QgsComposerLegend(c)
root = QgsProject.instance().layerTreeRoot().clone()
root = self.buildLegendLayerTree(root, [layer])
legend.modelV2().setRootGroup(root)
legend.setItemPosition(250, 20)
legend.setResizeToContents(True)
c.addItem(legend)
label = QgsComposerLabel(c)
label.setMarginX(125)
label.setMarginY(10)
label.setText(layer.name())
label.setFont(QFont('PMinliu', 20, QFont.Bold))
label.adjustSizeToText()
c.addItem(label)
item = QgsComposerScaleBar(c)
item.setStyle('Double Box') # optionally modify the style
item.setComposerMap(composerMap)
item.applyDefaultSize()
item.setItemPosition(10, 190)
c.addItem(item)
dpmm = 300 / 25.4
width = int(dpmm * c.paperWidth())
width = int(width / 2) * 2
height = int(dpmm * c.paperHeight())
height = int(height / 2) * 2
Dots = int(dpmm * 1000 / 2) * 2
# create output image and initialize it
image = QImage(QSize(width, height), QImage.Format_ARGB32)
image.setDotsPerMeterX(Dots)
image.setDotsPerMeterY(Dots)
image.fill(0)
# render the composition
imagePainter = QPainter(image)
c.renderPage(imagePainter, 0)
imagePainter.end()
outName = os.path.join(self.workingFolder, outName + '.png')
image.save(outName, "png")
return outName
def draw_native_scalebar(self, composer_map, top_offset):
"""Draw a scale bar using QGIS' native drawing.
In the case of geographic maps, scale will be in degrees, not km.
:param composer_map: Composer map on which to draw the scalebar.
:type composer_map: QgsComposerMap
:param top_offset: Vertical offset at which the logo should be drawn.
:type top_offset: int
"""
LOGGER.debug('InaSAFE Map drawNativeScaleBar called')
myScaleBar = QgsComposerScaleBar(self.composition)
myScaleBar.setStyle('Numeric') # optionally modify the style
myScaleBar.setComposerMap(composer_map)
myScaleBar.applyDefaultSize()
myScaleBarHeight = myScaleBar.boundingRect().height()
myScaleBarWidth = myScaleBar.boundingRect().width()
# -1 to avoid overlapping the map border
myScaleBar.setItemPosition(
self.pageMargin + 1,
top_offset + self.mapHeight - (myScaleBarHeight * 2),
myScaleBarWidth,
myScaleBarHeight)
myScaleBar.setFrameEnabled(self.showFramesFlag)
def drawNativeScaleBar(self, theComposerMap, theTopOffset):
"""Draw a scale bar using QGIS' native drawing - in the case of
geographic maps, scale will be in degrees, not km.
Args:
None
Returns:
None
Raises:
Any exceptions raised by the InaSAFE library will be propagated.
"""
LOGGER.debug("InaSAFE Map drawNativeScaleBar called")
myScaleBar = QgsComposerScaleBar(self.composition)
myScaleBar.setStyle("Numeric") # optionally modify the style
myScaleBar.setComposerMap(theComposerMap)
myScaleBar.applyDefaultSize()
myScaleBarHeight = myScaleBar.boundingRect().height()
myScaleBarWidth = myScaleBar.boundingRect().width()
# -1 to avoid overlapping the map border
myScaleBar.setItemPosition(
self.pageMargin + 1,
theTopOffset + self.mapHeight - (myScaleBarHeight * 2),
myScaleBarWidth,
myScaleBarHeight,
)
myScaleBar.setFrame(self.showFramesFlag)
def drawNativeScaleBar(self, theComposerMap, theTopOffset):
"""Draw a scale bar using QGIS' native drawing - in the case of
geographic maps, scale will be in degrees, not km.
Args:
None
Returns:
None
Raises:
Any exceptions raised by the InaSAFE library will be propagated.
"""
LOGGER.debug('InaSAFE Map drawNativeScaleBar called')
myScaleBar = QgsComposerScaleBar(self.composition)
myScaleBar.setStyle('Numeric') # optionally modify the style
myScaleBar.setComposerMap(theComposerMap)
myScaleBar.applyDefaultSize()
myScaleBarHeight = myScaleBar.boundingRect().height()
myScaleBarWidth = myScaleBar.boundingRect().width()
# -1 to avoid overlapping the map border
myScaleBar.setItemPosition(
self.pageMargin + 1,
theTopOffset + self.mapHeight - (myScaleBarHeight * 2),
myScaleBarWidth, myScaleBarHeight)
myScaleBar.setFrame(self.showFramesFlag)
def draw_native_scalebar(self, composer_map, top_offset):
"""Draw a scale bar using QGIS' native drawing.
In the case of geographic maps, scale will be in degrees, not km.
:param composer_map: Composer map on which to draw the scalebar.
:type composer_map: QgsComposerMap
:param top_offset: Vertical offset at which the logo should be drawn.
:type top_offset: int
"""
LOGGER.debug('InaSAFE Map drawNativeScaleBar called')
scale_bar = QgsComposerScaleBar(self.composition)
scale_bar.setStyle('Numeric') # optionally modify the style
scale_bar.setComposerMap(composer_map)
scale_bar.applyDefaultSize()
scale_bar_height = scale_bar.boundingRect().height()
scale_bar_width = scale_bar.boundingRect().width()
# -1 to avoid overlapping the map border
scale_bar.setItemPosition(
self.page_margin + 1,
top_offset + self.map_height - (scale_bar_height * 2),
scale_bar_width, scale_bar_height)
scale_bar.setFrameEnabled(self.show_frames)