Source code for gaphas.painter.itempainter
from typing import Collection, Optional
from cairo import LINE_JOIN_ROUND
from cairo import Context as CairoContext
from gaphas.item import DrawContext, Item
from gaphas.selection import Selection
[docs]
class ItemPainter:
def __init__(self, selection: Optional[Selection] = None) -> None:
self.selection = selection or Selection()
def paint_item(self, item: Item, cairo: CairoContext) -> None:
cairo.save()
try:
cairo.set_line_join(LINE_JOIN_ROUND)
cairo.transform(item.matrix_i2c.to_cairo())
selection = self.selection
item.draw(
DrawContext(
cairo=cairo,
selected=(item in selection.selected_items),
focused=(item is selection.focused_item),
hovered=(item is selection.hovered_item),
)
)
finally:
cairo.restore()
def paint(self, items: Collection[Item], cairo: CairoContext) -> None:
"""Draw the items."""
for item in items:
self.paint_item(item, cairo)