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from typing import TYPE_CHECKING, Optional
from qtpy.QtWidgets import QGraphicsItem
from qtpy.QtGui import QPainter, QPen, QBrush, QPolygonF
from qtpy.QtCore import QRectF, Qt, QPointF
from patshared import PortMode
from .init_values import canvas, ZvBox
if TYPE_CHECKING:
from .box_widget import BoxWidget
class BoxHidder(QGraphicsItem):
def __init__(self, parent: Optional['QGraphicsItem'] = ...):
super().__init__(parent)
self.setZValue(ZvBox.HIDDER.value)
self._hide_ratio = 0.0
def set_hide_ratio(self, ratio: float):
self._hide_ratio = ratio ** 1.5
self.update()
def parentItem(self) -> 'BoxWidget':
return super().parentItem() # type:ignore
def boundingRect(self) -> QRectF:
return self.parentItem().boundingRect()
def paint(self, painter: QPainter, option, widget):
painter.save()
orig_rect = self.parentItem().boundingRect()
box_theme = self.parentItem().get_theme()
pen = box_theme.fill_pen
lh = pen.widthF() / 2.0
square_side = orig_rect.width() + orig_rect.height()
right = orig_rect.right() - lh
bottom = orig_rect.bottom() - lh
left = orig_rect.left() + lh
top = orig_rect.top() + lh
ratio = self._hide_ratio
th_top = bottom - square_side * ratio
th_left = right - square_side * ratio
th_right = left + square_side * ratio
if self.parentItem().get_port_mode() & PortMode.OUTPUT:
points = [(right, bottom),
(right, max(th_top, top))]
if th_top < top:
points += [(max(left, right - (top - th_top)), top)]
if th_left < left:
points += [(left, max(top, bottom - (left - th_left)))]
points += [(max(left, th_left), bottom),
(right, bottom)]
else:
points = [(left, bottom),
(left, max(th_top, top))]
if th_top < top:
points += [(min(right, left + (top - th_top)), top)]
if th_right > right:
points += [(right, max(top, bottom - (th_right - right)))]
points += [(min(right, th_right), bottom),
(left, bottom)]
polygon = QPolygonF()
for xy in points:
polygon += QPointF(*xy)
if canvas.theme.scene_background_image is not None:
painter.setPen(QPen(Qt.PenStyle.NoPen))
bg_brush = QBrush()
bg_brush.setTextureImage(canvas.theme.scene_background_image)
painter.setBrush(bg_brush)
painter.drawPolygon(polygon)
painter.setPen(box_theme.fill_pen)
painter.setBrush(canvas.theme.scene_background_color)
painter.drawPolygon(polygon)
painter.restore()
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