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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
// +build !windows,!darwin
// 30 july 2014
package ui
import (
"unsafe"
)
// #include "gtk_unix.h"
import "C"
type controlbase struct {
*controldefs
widget *C.GtkWidget
}
type controlParent struct {
c *C.GtkContainer
}
func newControl(widget *C.GtkWidget) *controlbase {
c := new(controlbase)
c.widget = widget
c.controldefs = new(controldefs)
c.fsetParent = func(p *controlParent) {
C.gtk_container_add(p.c, c.widget)
// make sure the new widget is shown if not explicitly hidden
c.containerShow()
}
c.fcontainerShow = func() {
C.gtk_widget_show_all(c.widget)
}
c.fcontainerHide = func() {
C.gtk_widget_hide(c.widget)
}
c.fallocate = func(x int, y int, width int, height int, d *sizing) []*allocation {
// TODO split into its own function
return []*allocation{&allocation{
x: x,
y: y,
width: width,
height: height,
this: c,
}}
}
c.fpreferredSize = func(d *sizing) (int, int) {
// GTK+ 3 makes this easy: controls can tell us what their preferred size is!
// ...actually, it tells us two things: the "minimum size" and the "natural size".
// The "minimum size" is the smallest size we /can/ display /anything/. The "natural size" is the smallest size we would /prefer/ to display.
// The difference? Minimum size takes into account things like truncation with ellipses: the minimum size of a label can allot just the ellipses!
// So we use the natural size instead.
// There is a warning about height-for-width controls, but in my tests this isn't an issue.
// For Areas, we manually save the Area size and use that, just to be safe.
//TODO
/*
if s.ctype == c_area {
return s.areawidth, s.areaheight
}
*/
var r C.GtkRequisition
C.gtk_widget_get_preferred_size(c.widget, nil, &r)
return int(r.width), int(r.height)
}
c.fcommitResize = func(a *allocation, d *sizing) {
// as we resize on size-allocate, we have to also use size-allocate on our children
// this is fine anyway; in fact, this allows us to move without knowing what the container is!
// this is what GtkBox does anyway
// thanks to tristan in irc.gimp.net/#gtk+
var r C.GtkAllocation
r.x = C.int(a.x)
r.y = C.int(a.y)
r.width = C.int(a.width)
r.height = C.int(a.height)
C.gtk_widget_size_allocate(c.widget, &r)
}
c.fgetAuxResizeInfo = func(d *sizing) {
//TODO
// d.shouldVAlignTop = (s.ctype == c_listbox) || (s.ctype == c_area)
d.shouldVAlignTop = false
}
return c
}
type scrolledcontrol struct {
*controlbase
scroller *controlbase
scrollcontainer *C.GtkContainer
scrollwindow *C.GtkScrolledWindow
}
func newScrolledControl(widget *C.GtkWidget, native bool) *scrolledcontrol {
scroller := C.gtk_scrolled_window_new(nil, nil)
s := &scrolledcontrol{
controlbase: newControl(widget),
scroller: newControl(scroller),
scrollcontainer: (*C.GtkContainer)(unsafe.Pointer(scroller)),
scrollwindow: (*C.GtkScrolledWindow)(unsafe.Pointer(scroller)),
}
// give the scrolled window a border (thanks to jlindgren in irc.gimp.net/#gtk+)
C.gtk_scrolled_window_set_shadow_type(s.scrollwindow, C.GTK_SHADOW_IN)
C.gtk_container_add(s.scrollcontainer, s.widget)
s.fsetParent = s.scroller.fsetParent
s.fcommitResize = s.scroller.fcommitResize
return s
}
|
