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ui: Use flexbox for centering

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This commit is contained in:
Hajime Hoshi 2019-03-20 01:36:52 +09:00
parent 3f331c8af4
commit dbc3461628
1 changed files with 4 additions and 3 deletions
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7
internal/ui/ui_js.go
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@ -316,6 +316,10 @@ func init() {
bodyStyle.Set("height", "100%") bodyStyle.Set("height", "100%")
bodyStyle.Set("margin", "0") bodyStyle.Set("margin", "0")
bodyStyle.Set("padding", "0") bodyStyle.Set("padding", "0")
bodyStyle.Set("display", "flex")
bodyStyle.Set("alignItems", "center")
bodyStyle.Set("justifyContent", "center")
// TODO: This is OK as long as the game is in an independent iframe. // TODO: This is OK as long as the game is in an independent iframe.
// What if the canvas is embedded in a HTML directly? // What if the canvas is embedded in a HTML directly?
document.Get("body").Call("addEventListener", "click", js.NewCallback(func([]js.Value) { document.Get("body").Call("addEventListener", "click", js.NewCallback(func([]js.Value) {
@ -411,9 +415,6 @@ func (u *userInterface) updateScreenSize() {
cssHeight := int(float64(u.height) * s) cssHeight := int(float64(u.height) * s)
canvasStyle.Set("width", strconv.Itoa(cssWidth)+"px") canvasStyle.Set("width", strconv.Itoa(cssWidth)+"px")
canvasStyle.Set("height", strconv.Itoa(cssHeight)+"px") canvasStyle.Set("height", strconv.Itoa(cssHeight)+"px")
// CSS calc requires space chars.
canvasStyle.Set("left", "calc((100% - "+strconv.Itoa(cssWidth)+"px) / 2)")
canvasStyle.Set("top", "calc((100% - "+strconv.Itoa(cssHeight)+"px) / 2)")
u.sizeChanged = true u.sizeChanged = true
} }