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
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
// 25 june 2014
package ui
type allocation struct {
x int
y int
width int
height int
this Control
neighbor Control
}
type sizingbase struct {
xmargin int
ymargin int
xpadding int
ypadding int
}
type controlSizing interface {
allocate(x int, y int, width int, height int, d *sizing) []*allocation
preferredSize(*sizing) (int, int)
commitResize(*allocation, *sizing)
getAuxResizeInfo(*sizing)
}
// A container hosts a Control and resizes that Control based on changes in size to the parent Window.
// container is used by Window, Tab, and Group to contain and control their respective Controls.
// Tab and Group use containers for their content; as such, their commitResize() functions should only change the size of the Tab and Group themselves, and have their containers do the real work.
// All containers must embed containerbase.
type containerbase struct {
child Control
}
// set to true to apply spacing to all windows
var spaced bool = false
func (c *container) resize(x, y, width, height int) {
if c.child == nil { // no children; nothing to do
return
}
d := c.beginResize()
allocations := c.child.allocate(x + d.xmargin, y + d.ymargin, width - (2 * d.xmargin), height - (2 * d.ymargin), d)
c.translateAllocationCoords(allocations, width, height)
// move in reverse so as to approximate right->left order so neighbors make sense
for i := len(allocations) - 1; i >= 0; i-- {
allocations[i].this.commitResize(allocations[i], d)
}
}
|
