gaphas.painter.itempainter - Gaphas

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# Source code for gaphas.painter.itempainter

    from __future__ import annotations

    from collections.abc import Collection

    from cairo import LINE_JOIN_ROUND
    from cairo import Context as CairoContext

    from gaphas.item import DrawContext, Item
    from gaphas.selection import Selection

    class ItemPainter:
        def __init__(self, selection: Selection | None = 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)