def nearestPosOnRect(pos: QtCore.QPoint, rect: QtCore.QRect):
"""
Finds the position on a rectangle nearest to the given point.
"""
# Bounds: xmax, ymax, xmin, ymin
bounds = (rect.right(), rect.bottom(), rect.left(), rect.top())
# Line origin point
c = rect.center()
# Clipped line: returns (x1, y1, x2, y2)
clipped = cohenSutherlandClip(c.x(), c.y(), pos.x(), pos.y(), *bounds)
# "clipped" should only be None if both points lie outside the
# bounding area. This should never happen, since one point
# is always the center of the area.
assert clipped is not None
# The nearest position to the given point, on the rectangle, is
# the second point returned by the clipping function.
_, _, x2, y2 = clipped
return QtCore.QPoint(x2, y2)
def fit_solution_in_view(self, solution):
if not solution.rect:
return
solution_rect = QRect(
QPoint(solution.rect.left, solution.rect.top),
QPoint(solution.rect.right, solution.rect.bottom))
viewport_rect = self.viewport.rect()
# compute zoom level
if solution_rect.width() > solution_rect.height():
zoom = viewport_rect.width() / solution_rect.width(
) if viewport_rect.width() else 1
else:
zoom = viewport_rect.height() / solution_rect.height(
) if viewport_rect.height() else 1
self.zoom = 0.80 * zoom if zoom else 1
self.zoom = clamp(self.zoom, MIN_ZOOM, MAX_ZOOM) # limit zoom level
# center view on rect center
self.pos = -QPointF(solution_rect.center())
def draw_icon(self, painter: QPainter, rect: QRect, icon: QIcon):
r = QRect(0, 0, 20, 20)
r.moveCenter(rect.center())
painter.drawPixmap(r, icon.pixmap(20, 20))
