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// 16 july 2014
package ui
// #include "objc_darwin.h"
import "C"
// cheap trick
type label struct {
*textField
standalone bool
supercommitResize func(c *allocation, d *sizing)
}
func finishNewLabel(text string, standalone bool) *label {
l := &label{
textField: finishNewTextField(C.newLabel()),
standalone: standalone,
}
l.SetText(text)
l.supercommitResize = l.fcommitResize
l.fcommitResize = l.labelcommitResize
return l
}
func newLabel(text string) Label {
return finishNewLabel(text, false)
}
func newStandaloneLabel(text string) Label {
return finishNewLabel(text, true)
}
func (l *label) labelcommitResize(c *allocation, d *sizing) {
if !l.standalone && c.neighbor != nil {
c.neighbor.getAuxResizeInfo(d)
if d.neighborAlign.baseline != 0 { // no adjustment needed if the given control has no baseline
// in order for the baseline value to be correct, the label MUST BE AT THE HEIGHT THAT OS X WANTS IT TO BE!
// otherwise, the baseline calculation will be relative to the bottom of the control, and everything will be wrong
origsize := C.controlPrefSize(l.id)
c.height = int(origsize.height)
newrect := C.struct_xrect{
x: C.intptr_t(c.x),
y: C.intptr_t(c.y),
width: C.intptr_t(c.width),
height: C.intptr_t(c.height),
}
ourAlign := C.alignmentInfo(l.id, newrect)
// we need to find the exact Y positions of the baselines
// fortunately, this is easy now that (x,y) is the bottom-left corner
thisbasey := ourAlign.rect.y + ourAlign.baseline
neighborbasey := d.neighborAlign.rect.y + d.neighborAlign.baseline
// now the amount we have to move the label down by is easy to find
yoff := neighborbasey - thisbasey
// and we just add that
c.y += int(yoff)
}
// TODO if there's no baseline, the alignment should be to the top /of the alignment rect/, not the frame
}
l.supercommitResize(c, d)
}
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