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Reduce allocation of X buffers and canvases

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This commit is contained in:
Sasha Koshka
2023-02-01 01:47:08 -05:00
parent b4a5bc7d03
commit 8f0f2be9e9
2 changed files with 39 additions and 11 deletions
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34
backends/x/window.go
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@@ -195,19 +195,31 @@ func (window *Window) OnClose (callback func ()) {
}
func (window *Window) reallocateCanvas () {
window.canvas = tomo.NewBasicCanvas (
window.metrics.width,
window.metrics.height)
window.canvas.Reallocate(window.metrics.width, window.metrics.height)
previousWidth, previousHeight := 0, 0
if window.xCanvas != nil {
window.xCanvas.Destroy()
previousWidth = window.xCanvas.Bounds().Dx()
previousHeight = window.xCanvas.Bounds().Dy()
}
window.xCanvas = xgraphics.New (
window.backend.connection,
image.Rect (
0, 0,
window.metrics.width,
window.metrics.height))
window.xCanvas.CreatePixmap()
newWidth := window.metrics.width
newHeight := window.metrics.height
larger := newWidth > previousWidth || newHeight > previousHeight
smaller := newWidth < previousWidth / 2 || newHeight < previousHeight / 2
if larger || smaller {
if window.xCanvas != nil {
window.xCanvas.Destroy()
}
window.xCanvas = xgraphics.New (
window.backend.connection,
image.Rect (
0, 0,
(newWidth / 64) * 64 + 64,
(newHeight / 64) * 64 + 64))
window.xCanvas.CreatePixmap()
}
}
func (window *Window) redrawChildEntirely () {