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ui,ui/app: convert Config to an interface

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To keep the interface slim, remove the helper methods and shorten
the essential method, Pixels, to Px.

Add and use unexported Config implementation in the app package.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2019-07-10 16:40:53 +02:00
parent 624ef78e1c
commit 32aae18293
14 changed files with 104 additions and 104 deletions
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ui/widget/image.go
+2 -2
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@@ -23,13 +23,13 @@ type Image struct {
Scale float32
}
func (im Image) Layout(c *ui.Config, ops *ui.Ops, cs layout.Constraints) layout.Dimens {
func (im Image) Layout(c ui.Config, ops *ui.Ops, cs layout.Constraints) layout.Dimens {
size := im.Src.Bounds()
wf, hf := float32(size.Dx()), float32(size.Dy())
var w, h int
if im.Scale == 0 {
const dpPrPx = 160 / 72
w, h = c.Dp(wf*dpPrPx), c.Dp(hf*dpPrPx)
w, h = c.Px(ui.Dp(wf*dpPrPx)), c.Px(ui.Dp(hf*dpPrPx))
} else {
w, h = int(wf*im.Scale+.5), int(hf*im.Scale+.5)
}