def paint(self, painter, styleoptions, widget=None):
try:
width, realsize, label, fontsize = self._calc_size()
except ZeroDivisionError:
return
mapunits = self.canvas.mapUnits()
# painter.drawRect(self.boundingRect())
array = QPolygon()
canvasheight = self.canvas.height()
canvaswidth = self.canvas.width()
margin = 20
originy = 0
originx = 0
self.setPos(margin, canvasheight - margin)
x1, y1 = originx, originy
x2, y2 = originx, originy + self.ticksize
x3, y3 = originx + width, originy + self.ticksize
midx, midy = originx + width / 2, originy + self.ticksize / 2
x4, y4 = originx + width, originy
for pen in self.pens:
painter.setPen(pen)
# Drwa the scale bar
painter.drawLine(x1, y1, x2, y2)
painter.drawLine(x2, y2, x3, y3)
painter.drawLine(x3, y3, x4, y4)
painter.drawLine(midx, midy, midx, y1)
# Draw the text
fontwidth = self.metrics.width("0")
fontheight = self.metrics.height()
fontheight /= 2
fontwidth /= 2
path = QPainterPath()
point = QPointF(x1 - fontwidth, y1 - fontheight)
path.addText(point, self.font, "0")
painter.setPen(self.whitepen)
painter.setBrush(self.blackbrush)
painter.setRenderHints(QPainter.Antialiasing)
painter.setFont(self.font)
painter.drawPath(path)
fontwidth = self.metrics.width(label)
fontheight = self.metrics.height()
fontheight /= 2
fontwidth /= 2
point = QPointF(x4 - fontwidth, y4 - fontheight)
path.addText(point, self.font, label)
painter.drawPath(path)
def paint(self, painter, option, widget):
if not painter:
return
painter.save()
painter.setRenderHint(QPainter.Antialiasing, True)
# do a bit of trigonometry to find out how to transform a rotated item such
# that the center point is at the point feature
x = 0.0
y = 0.0
if self.pixmap.width() > 0 and self.pixmap.height() > 0:
half_item_diagonal = math.sqrt(
self.pixmap.width() * self.pixmap.width() +
self.pixmap.height() * self.pixmap.height()) / 2
diagonal_angle = math.acos(
self.pixmap.width() / (half_item_diagonal * 2)) * 180 / math.pi
x = half_item_diagonal * math.cos(
(self.rotation - diagonal_angle) * math.pi / 180)
y = half_item_diagonal * math.sin(
(self.rotation - diagonal_angle) * math.pi / 180)
painter.rotate(self.rotation)
painter.translate(x - self.pixmap.width() / 2.0,
-y - self.pixmap.height() / 2.0)
painter.drawPixmap(0, 0, self.pixmap)
# draw arrow, using a red line over a thicker white line so that the arrow is visible
# against a range of backgrounds
pen = QPen()
pen.setWidth(GuiUtils.scale_icon_size(4))
pen.setColor(QColor(Qt.white))
painter.setPen(pen)
painter.drawPath(self.arrow_path)
pen.setWidth(GuiUtils.scale_icon_size(1))
pen.setColor(QColor(Qt.red))
painter.setPen(pen)
painter.drawPath(self.arrow_path)
painter.restore()
# draw numeric value beside the symbol
painter.save()
painter.setRenderHint(QPainter.Antialiasing, True)
buffer_pen = QPen()
buffer_pen.setColor(Qt.white)
buffer_pen.setWidthF(GuiUtils.scale_icon_size(4))
fm = QFontMetricsF(self.marker_font)
label = QPainterPath()
label.addText(self.pixmap.width(),
self.pixmap.height() / 2.0 + fm.height() / 2.0,
self.marker_font, str(round(self.rotation, 1)))
painter.setPen(buffer_pen)
painter.setBrush(Qt.NoBrush)
painter.drawPath(label)
painter.setPen(Qt.NoPen)
painter.setBrush(QBrush(Qt.black))
painter.drawPath(label)
painter.restore()
def append_CharacterMarkerSymbolLayerAsSvg(symbol, layer, context: Context): # pylint: disable=too-many-locals
"""
Appends a CharacterMarkerSymbolLayer to a symbol, rendering the font character
to an SVG file.
"""
font_family = layer.font
character = chr(layer.unicode)
color = symbol_color_to_qcolor(layer.color)
angle = convert_angle(layer.angle)
font = QFont(font_family)
font.setPointSizeF(layer.size)
# Using the rect of a painter path gives better results then using font metrics
path = QPainterPath()
path.setFillRule(Qt.WindingFill)
path.addText(0, 0, font, character)
rect = path.boundingRect()
font_bounding_rect = QFontMetricsF(font).boundingRect(character)
# adjust size -- marker size in esri is the font size, svg marker size in qgis is the svg rect size
scale = rect.width() / font_bounding_rect.width()
gen = QSvgGenerator()
svg_path = symbol_name_to_filename(context.symbol_name,
context.picture_folder, 'svg')
gen.setFileName(svg_path)
gen.setViewBox(rect)
painter = QPainter(gen)
painter.setFont(font)
# todo -- size!
if context.parameterise_svg:
painter.setBrush(QBrush(QColor(255, 0, 0)))
else:
painter.setBrush(QBrush(color))
painter.setPen(Qt.NoPen)
painter.drawPath(path)
painter.end()
if context.parameterise_svg:
with open(svg_path, 'r') as f:
t = f.read()
t = t.replace('#ff0000', 'param(fill)')
t = t.replace('fill-opacity="1" ',
'fill-opacity="param(fill-opacity)"')
t = t.replace(
'stroke="none"',
'stroke="param(outline)" stroke-opacity="param(outline-opacity) 1" stroke-width="param(outline-width) 0"'
)
with open(svg_path, 'w') as f:
f.write(t)
svg_path = context.convert_path(svg_path)
out = QgsSvgMarkerSymbolLayer(svg_path)
out.setSizeUnit(context.units)
out.setSize(context.convert_size(scale * rect.width()))
out.setAngle(angle)
out.setFillColor(color)
out.setStrokeWidth(0)
out.setEnabled(layer.enabled)
out.setLocked(layer.locked)
out.setOffset(
adjust_offset_for_rotation(
QPointF(context.convert_size(layer.x_offset),
-context.convert_size(layer.y_offset)), layer.angle))
out.setOffsetUnit(context.units)
symbol.appendSymbolLayer(out)
