1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
package main
import (
"fmt"
"github.com/mattn/go-gtk/gdk"
"github.com/mattn/go-gtk/gtk"
"image/color"
)
func colorBox(c color.Color) *gtk.DrawingArea {
r, g, b, _ := c.RGBA()
colstring := fmt.Sprintf("#%02x%02x%02x", (r>>8)&0xff, (g>>8)&0xff, (b>>8)&0xff)
dArea := gtk.NewDrawingArea()
var pixmap *gdk.Pixmap
var gc *gdk.GC
dArea.Connect("configure-event", func() {
if pixmap != nil {
pixmap.Unref()
}
alloc := dArea.GetAllocation()
pixmap = gdk.NewPixmap(dArea.GetWindow().GetDrawable(), alloc.Width, alloc.Height, 24)
gc = gdk.NewGC(pixmap.GetDrawable())
gc.SetRgbFgColor(gdk.NewColor(colstring))
pixmap.GetDrawable().DrawRectangle(gc, true, 0, 0, -1, -1)
})
dArea.Connect("expose-event", func() {
if pixmap != nil {
dArea.GetWindow().GetDrawable().DrawDrawable(gc, pixmap.GetDrawable(), 0, 0, 0, 0, -1, -1)
}
})
return dArea
}
|
