def paint_arrow_tip(self, gc: wx.GraphicsContext, fill: wx.Colour):
assert len(self.arrow_adjusted_coords) == 4, \
"Arrow adjusted coords is not of length 4: {}".format(self.arrow_adjusted_coords)
gc.SetPen(gc.CreatePen(wx.GraphicsPenInfo(fill)))
gc.SetBrush(wx.Brush(fill))
gc.DrawLines([wx.Point2D(*(coord))
for coord in self.arrow_adjusted_coords])
def do_paint(self, gc: wx.GraphicsContext, fill: wx.Colour, selected: bool):
self._recompute(for_collision=False)
rxn_color: wx.Colour
# Draw bezier curve
if selected:
rxn_color = get_theme('selected_reaction_fill')
else:
rxn_color = fill
pen = gc.CreatePen(wx.GraphicsPenInfo(rxn_color).Width(self.thickness))
gc.SetPen(pen)
# gc.StrokeLines([wx.Point2D(*(p * cstate.scale)) for p in self.bezier_points])
path = gc.CreatePath()
points = [p for p in (self.node_intersection,
self.handle.tip,
self.centroid_handle.tip,
self.real_center)]
path.MoveToPoint(*points[0])
if self.bezierCurves:
path.AddCurveToPoint(*points[1], *points[2], *points[3])
else:
path.AddLineToPoint(*points[3])
gc.StrokePath(path)
if selected:
assert self.node_intersection is not None
self.handle.base = self.node_intersection
# Draw arrow tip
if not self.is_source:
color = get_theme('handle_color') if selected else fill
self.paint_arrow_tip(gc, color)
def draw_rect(gc: wx.GraphicsContext,
rect: Rect,
*,
fill: Optional[wx.Colour] = None,
border: Optional[wx.Colour] = None,
border_width: float = 1,
fill_style=wx.BRUSHSTYLE_SOLID,
border_style=wx.PENSTYLE_SOLID,
corner_radius: float = 0):
"""Draw a rectangle with the given graphics context.
Either fill or border must be specified to avoid drawing an entirely transparent rectangle.
Args:
gc: The graphics context.
rect: The rectangle to draw.
fill: If specified, the fill color of the rectangle.
border: If specified, the border color of the rectangle.
border_width: The width of the borders. Defaults to 1. This cannot be 0 when border
is specified.
corner_radius: The corner radius of the rounded rectangle. Defaults to 0.
"""
assert not(fill is None and border is None), \
"Both 'fill' and 'border' are None, but at least one of them should be provided"
assert not (border is not None and border_width == 0), \
"'border_width' cannot be 0 when 'border' is specified"
x, y = rect.position
width, height = rect.size
pen: wx.Pen
brush: wx.Brush
# set up brush and pen if applicable
if fill is not None:
brush = gc.CreateBrush(wx.Brush(fill, fill_style))
else:
brush = wx.TRANSPARENT_BRUSH
if border is not None:
pen = gc.CreatePen(
wx.GraphicsPenInfo(border).Width(border_width).Style(border_style))
else:
pen = wx.TRANSPARENT_PEN
gc.SetPen(pen)
gc.SetBrush(brush)
# draw rect
gc.DrawRoundedRectangle(x, y, width, height, corner_radius)
def paint_handle(gc: wx.GraphicsContext, base: Vec2, handle: Vec2, hovering: bool):
"""Paint the handle as given by its base and tip positions, highlighting it if hovering."""
c = get_theme('highlighted_handle_color') if hovering else get_theme('handle_color')
brush = wx.Brush(c)
pen = gc.CreatePen(wx.GraphicsPenInfo(c))
gc.SetPen(pen)
# Draw handle lines
gc.StrokeLine(*base, *handle)
# Draw handle circles
gc.SetBrush(brush)
gc.DrawEllipse(handle.x - HANDLE_RADIUS, handle.y - HANDLE_RADIUS,
2 * HANDLE_RADIUS, 2 * HANDLE_RADIUS)
def do_paint(self, gc: wx.GraphicsContext):
"""Paint the handle as given by its base and tip positions, highlighting it if hovering."""
assert self.data.base is not None
c = theme['highlighted_handle_color'] if self.hovering else theme[
'handle_color']
brush = wx.Brush(c)
pen = gc.CreatePen(wx.GraphicsPenInfo(c))
sbase = self.data.base * cstate.scale
stip = self.data.tip * cstate.scale
gc.SetPen(pen)
# Draw handle lines
gc.StrokeLine(*sbase, *stip)
# Draw handle circles
gc.SetBrush(brush)
gc.DrawEllipse(stip.x - BezierHandle.HANDLE_RADIUS,
stip.y - BezierHandle.HANDLE_RADIUS,
2 * BezierHandle.HANDLE_RADIUS,
2 * BezierHandle.HANDLE_RADIUS)
