36 lines
735 B
Go
36 lines
735 B
Go
package system
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import "git.tebibyte.media/tomo/tomo"
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import "git.tebibyte.media/tomo/tomo/canvas"
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type canvasBox struct {
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*box
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userDrawer canvas.Drawer
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}
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func (this *System) NewCanvasBox () tomo.CanvasBox {
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box := &canvasBox { }
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box.box = this.newBox(box)
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box.drawer = box
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return box
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}
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func (this *canvasBox) SetDrawer (drawer canvas.Drawer) {
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this.userDrawer = drawer
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this.invalidateDraw()
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}
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func (this *canvasBox) Invalidate () {
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this.invalidateDraw()
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}
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func (this *canvasBox) Draw (can canvas.Canvas) {
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if can == nil { return }
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this.box.Draw(can)
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if this.userDrawer != nil {
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padding := tomo.Inset(this.attrPadding.Value())
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this.userDrawer.Draw (
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can.SubCanvas(padding.Apply(this.innerClippingBounds)))
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}
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}
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