mirror of
https://github.com/golang/go
synced 2024-11-24 07:00:13 -07:00
52 lines
931 B
Go
52 lines
931 B
Go
|
// compile
|
||
|
|
|
||
|
|
// Copyright 2017 The Go Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
// Issue 19515: compiler panics on spilling int128 constant.
|
||
|
|
|
||
|
|
package x
|
||
|
|
|
||
|
|
type VScrollPanel struct {
|
||
|
|
x, y int
|
||
|
|
}
|
||
|
|
|
||
|
|
type Color struct {
|
||
|
|
R, G, B, A float32
|
||
|
|
}
|
||
|
|
|
||
|
|
func maxF(a, b float32) float32 {
|
||
|
|
if a > b {
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
return 1
|
||
|
|
}
|
||
|
|
|
||
|
|
type TransformMatrix [6]float32
|
||
|
|
|
||
|
|
type Paint struct {
|
||
|
|
xform TransformMatrix
|
||
|
|
feather float32
|
||
|
|
innerColor Color
|
||
|
|
outerColor Color
|
||
|
|
}
|
||
|
|
|
||
|
|
func BoxGradient(x, y, w, h, f float32, iColor, oColor Color) Paint {
|
||
|
|
return Paint{
|
||
|
|
xform: TransformMatrix{9, 0, 0, 0, x, y},
|
||
|
|
feather: maxF(1.0, f),
|
||
|
|
innerColor: iColor,
|
||
|
|
outerColor: oColor,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (v *VScrollPanel) Draw() {
|
||
|
|
x := float32(v.x)
|
||
|
|
y := float32(v.y)
|
||
|
|
|
||
|
|
BoxGradient(x+x-2, y-1, 0, 0, 0, Color{}, Color{})
|
||
|
|
BoxGradient(x+y-2, y-1, 0, 0, 0, Color{}, Color{})
|
||
|
|
}
|
||
|
|
|