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Refactored the X backend draw code a bit

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This commit is contained in:
Sasha Koshka 2023-01-26 18:01:39 -05:00
parent 21c19363dd
commit 0f9a33fc57
1 changed files with 12 additions and 19 deletions
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31
backends/x/window.go
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@ -208,16 +208,7 @@ func (window *Window) reallocateCanvas () {
} }
func (window *Window) redrawChildEntirely () { func (window *Window) redrawChildEntirely () {
data, stride := window.child.Buffer() window.pushRegion(window.paste(window.child))
bounds := window.child.Bounds()
window.xCanvas.For (func (x, y int) (c xgraphics.BGRA) {
if !(image.Point { x, y }).In(bounds) { return }
rgba := data[x + y * stride]
c.R, c.G, c.B, c.A = rgba.R, rgba.G, rgba.B, rgba.A
return
})
window.pushRegion(window.xCanvas.Bounds())
} }
func (window *Window) resizeChildToFit () { func (window *Window) resizeChildToFit () {
@ -252,21 +243,23 @@ func (window *Window) resizeChildToFit () {
func (window *Window) childDrawCallback (region tomo.Canvas) { func (window *Window) childDrawCallback (region tomo.Canvas) {
if window.skipChildDrawCallback { return } if window.skipChildDrawCallback { return }
window.pushRegion(window.paste(region))
}
data, stride := region.Buffer() func (window *Window) paste (canvas tomo.Canvas) (updatedRegion image.Rectangle) {
bounds := region.Bounds() data, stride := canvas.Buffer()
bounds := canvas.Bounds().Intersect(window.xCanvas.Bounds())
for x := bounds.Min.X; x < bounds.Max.X; x ++ { for x := bounds.Min.X; x < bounds.Max.X; x ++ {
for y := bounds.Min.Y; y < bounds.Max.Y; y ++ { for y := bounds.Min.Y; y < bounds.Max.Y; y ++ {
rgba := data[x + y * stride] rgba := data[x + y * stride]
window.xCanvas.SetBGRA (x, y, xgraphics.BGRA { index := x * 4 + y * window.xCanvas.Stride
R: rgba.R, window.xCanvas.Pix[index + 0] = rgba.B
G: rgba.G, window.xCanvas.Pix[index + 1] = rgba.G
B: rgba.B, window.xCanvas.Pix[index + 2] = rgba.R
A: rgba.A, window.xCanvas.Pix[index + 3] = rgba.A
})
}} }}
window.pushRegion(region.Bounds()) return bounds
} }
func (window *Window) childMinimumSizeChangeCallback (width, height int) { func (window *Window) childMinimumSizeChangeCallback (width, height int) {