def renderPoint(
self, # pylint: disable=missing-function-docstring
point: QPointF,
context: QgsSymbolRenderContext):
if not context.renderContext().painter():
return
feature_id = context.feature().id()
part_num = context.renderContext().expressionContext().variable(
'geometry_part_num')
if part_num != self.current_part_number:
self.vertex_id = 1
self.current_part_number = part_num
ring_num = context.renderContext().expressionContext().variable(
'geometry_ring_num')
if ring_num and ring_num != self.current_ring_number:
# account for qgis not rendering the last point in closed rings
self.vertex_id += 1
self.current_ring_number = ring_num
if feature_id in self.geometry_part_count:
part_counts = self.geometry_part_count[feature_id]
offset_for_part = sum(part_counts[:part_num - 1])
else:
offset_for_part = 0
current_vertex_id = self.vertex_id + offset_for_part
if feature_id in self.uncommon_vertices and current_vertex_id not in self.uncommon_vertices[
feature_id]:
self.vertex_id += 1
return
if self.target_vertex is not None and self.target_vertex != current_vertex_id:
self.vertex_id += 1
return
map_point = context.renderContext().mapToPixel().toMapCoordinatesF(
point.x(), point.y())
if not context.renderContext().mapExtent().contains(map_point):
# don't render points out of view
self.vertex_id += 1
return
if self.subSymbol():
self.subSymbol().renderPoint(point, None, context.renderContext())
# offset point a little
offset = context.renderContext().convertToPainterUnits(
1, QgsUnitTypes.RenderMillimeters)
render_point = QPointF(point.x() + offset, point.y() - offset)
QgsTextRenderer.drawText(render_point, 0, QgsTextRenderer.AlignLeft,
[str(current_vertex_id)],
context.renderContext(), self.text_format)
self.vertex_id += 1
def paint(self, painter, option, widget=None):
pt = QPointF(-self.WIDTH / 2, -self.HEIGHT / 2) + self.position
rect = QRectF(pt.x(), pt.y(), self.WIDTH, self.HEIGHT)
if self.isIn:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(Qt.lightGray, Qt.SolidPattern))
else:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(Qt.transparent, Qt.SolidPattern))
painter.drawRect(rect)
painter.drawPixmap(pt.x(), pt.y(), self.pixmap)
def paint(self, painter, option, widget=None):
pt = QPointF(-math.floor(self.WIDTH / 2),
-math.floor(self.HEIGHT / 2)) + self.position
rect = QRectF(pt.x(), pt.y(), self.WIDTH, self.HEIGHT)
if self.isIn:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(QColor(55, 55, 55, 33), Qt.SolidPattern))
else:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(Qt.transparent, Qt.SolidPattern))
painter.drawRect(rect)
painter.drawPicture(pt.x(), pt.y(), self.picture)
def paint(self, painter, option, widget=None):
pt = QPointF(-math.floor(self.WIDTH / 2), -math.floor(self.HEIGHT / 2)) + self.position
rect = QRectF(pt.x(), pt.y(), self.WIDTH, self.HEIGHT)
if self.isIn:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(QColor(55, 55, 55, 33),
Qt.SolidPattern))
else:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(Qt.transparent,
Qt.SolidPattern))
painter.drawRect(rect)
painter.drawPicture(pt.x(), pt.y(), self.picture)
def paint(self, painter, option, widget=None):
pt = QPointF(-self.WIDTH / 2, -self.HEIGHT / 2) + self.position
rect = QRectF(pt.x(), pt.y(), self.WIDTH, self.HEIGHT)
if self.isIn:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(Qt.lightGray,
Qt.SolidPattern))
else:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(Qt.transparent,
Qt.SolidPattern))
painter.drawRect(rect)
painter.drawPixmap(pt.x(), pt.y(), self.pixmap)
def drawMagnifierOnVideo(widget, dragPos, source, painter):
''' Draw Magnifier on Video '''
oldTransform = painter.transform()
painter.setTransform(oldTransform)
painter.setBrush(DrawToolBar.transparent_brush)
dim = min(widget.width(), widget.height())
magnifierSize = min(MAX_MAGNIFIER, dim * 2 / 3)
radius = magnifierSize / 2
ring = radius - 15
box = QSize(magnifierSize, magnifierSize)
center = dragPos - QPoint(0, radius)
center += QPoint(0, radius / 2)
corner = center - QPoint(radius, radius)
xy = center * MAX_FACTOR - QPoint(radius, radius)
# only set the dimension to the magnified portion
zoomPixmap = QPixmap(box)
zoomPixmap.fill(Qt.black)
painter_p = QPainter(zoomPixmap)
painter_p.setRenderHint(QPainter.HighQualityAntialiasing)
painter_p.translate(-xy)
painter_p.scale(MAX_FACTOR, MAX_FACTOR)
painter_p.drawImage(widget.surface.videoRect(), source,
widget.surface.sourceRect())
painter_p.end()
clipPath = QPainterPath()
center = QPointF(center)
# Shape Type
if TYPE_MAGNIFIER == 0:
# Square
clipPath.addRect(center.x(), center.y(), magnifierSize,
magnifierSize)
clipPath.translate(-radius, -radius)
else:
# Circle
clipPath.addEllipse(center, ring, ring)
painter.setClipPath(clipPath)
painter.drawPixmap(corner, zoomPixmap)
painter.setPen(DrawToolBar.glass_pen)
painter.drawPath(clipPath)
return
def drawHistogram(self):
#if self.inputlayer is None:
# return
self.showInfo("Drawing histogram...")
viewprect = QRectF(self.histoGraphicsView.viewport().rect())
self.histoGraphicsView.setSceneRect(viewprect)
self.setupScene.clear()
self.setupScene.update()
histbottom = self.histoGraphicsView.sceneRect().bottom()
histtop = self.histoGraphicsView.sceneRect().top()
left = self.histoGraphicsView.sceneRect().left() + self.histopadding
right = self.histoGraphicsView.sceneRect().right() - self.histopadding
histheight = histbottom - histtop
histwidth = right - left
step = 1.0 * histwidth / self.histobins
maxlength = histheight
padding = 1
ll = QPoint(self.histopadding - 1, histheight - padding)
start = QPointF(self.histoGraphicsView.mapToScene(ll))
# Check if there is only one value
#myrange = (self.minValueSpinBox.value(),self.maxValueSpinBox.value())
if self.histogramAvailable:
maxvalue = 0.0
for i in range(len(self.histo[0])):
if self.histo[0][i] > maxvalue:
maxvalue = self.histo[0][i]
if maxvalue == 0:
return
self.maxBinNumber.setText(str(maxvalue))
# Create the histogram:
#self.showInfo("maxvalue: " + str(maxvalue))
#self.showInfo("maxlength: " + str(maxlength))
#self.showInfo("step: " + str(step))
for i in range(self.histobins):
binnumber = self.histo[0][i]
if binnumber == 0:
continue
height = (1.0 * self.histo[0][i] / maxvalue *
(maxlength - padding))
rectangle = QGraphicsRectItem(start.x() + step * i,
start.y(),
step,
-height)
rectangle.setPen(QPen(QColor(102, 102, 102)))
rectangle.setBrush(QBrush(QColor(240, 240, 240)))
self.setupScene.addItem(rectangle)
#self.showInfo(str(i) + ": " + str(height))
#if self.levelsListView.model().rowCount() > 0:
# Add lines for the levels
minvalue = float(self.histMinValue.text())
maxvalue = float(self.histMaxValue.text())
datarange = maxvalue - minvalue
if datarange == 0:
return
i = 0
while self.levelsListView.model().item(i):
#self.showInfo("Element: " +
# str(self.levelsListView.model().item(i).text()))
#continue
value = float(self.levelsListView.model().item(i).text())
xvalue = start.x() + histwidth * (value - minvalue) / datarange
line = QGraphicsLineItem(xvalue, 0, xvalue, histheight)
if i == 0 or i == (self.levelsListView.model().rowCount() - 1):
line.setPen(QPen(QColor(204, 0, 0)))
else:
line.setPen(QPen(QColor(0, 204, 0)))
self.setupScene.addItem(line)
i = i + 1
def drawHistogram(self):
#if self.inputlayer is None:
# return
self.showInfo("Drawing histogram...")
viewprect = QRectF(self.histoGraphicsView.viewport().rect())
self.histoGraphicsView.setSceneRect(viewprect)
self.setupScene.clear()
self.setupScene.update()
histbottom = self.histoGraphicsView.sceneRect().bottom()
histtop = self.histoGraphicsView.sceneRect().top()
left = self.histoGraphicsView.sceneRect().left() + self.histopadding
right = self.histoGraphicsView.sceneRect().right() - self.histopadding
histheight = histbottom - histtop
histwidth = right - left
step = 1.0 * histwidth / self.histobins
maxlength = histheight
padding = 1
ll = QPoint(self.histopadding - 1, histheight - padding)
start = QPointF(self.histoGraphicsView.mapToScene(ll))
# Check if there is only one value
#myrange = (self.minValueSpinBox.value(),self.maxValueSpinBox.value())
if self.histogramAvailable:
maxvalue = 0.0
for i in range(len(self.histo[0])):
if self.histo[0][i] > maxvalue:
maxvalue = self.histo[0][i]
if maxvalue == 0:
return
self.maxBinNumber.setText(str(maxvalue))
# Create the histogram:
#self.showInfo("maxvalue: " + str(maxvalue))
#self.showInfo("maxlength: " + str(maxlength))
#self.showInfo("step: " + str(step))
for i in range(self.histobins):
binnumber = self.histo[0][i]
if binnumber == 0:
continue
height = (1.0 * self.histo[0][i] / maxvalue *
(maxlength - padding))
rectangle = QGraphicsRectItem(start.x() + step * i, start.y(),
step, -height)
rectangle.setPen(QPen(QColor(102, 102, 102)))
rectangle.setBrush(QBrush(QColor(240, 240, 240)))
self.setupScene.addItem(rectangle)
#self.showInfo(str(i) + ": " + str(height))
#if self.levelsListView.model().rowCount() > 0:
# Add lines for the levels
minvalue = float(self.histMinValue.text())
maxvalue = float(self.histMaxValue.text())
datarange = maxvalue - minvalue
if datarange == 0:
return
i = 0
while self.levelsListView.model().item(i):
#self.showInfo("Element: " +
# str(self.levelsListView.model().item(i).text()))
#continue
value = float(self.levelsListView.model().item(i).text())
xvalue = start.x() + histwidth * (value - minvalue) / datarange
line = QGraphicsLineItem(xvalue, 0, xvalue, histheight)
if i == 0 or i == (self.levelsListView.model().rowCount() - 1):
line.setPen(QPen(QColor(204, 0, 0)))
else:
line.setPen(QPen(QColor(0, 204, 0)))
self.setupScene.addItem(line)
i = i + 1
def horizontal_intersection(line, y, xmin, xmax):
p = QPointF()
r = line.intersect(QLineF(xmin, y, xmax, y), p)
if r != 0 and xmin <= p.x() and p.x() <= xmax:
return p
return None
