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// 16 july 2014
package ui
import (
"unsafe"
)
// #include "objc_darwin.h"
import "C"
type button struct {
*controlbase
clicked *event
}
func finishNewButton(id C.id, text string) *button {
ctext := C.CString(text)
defer C.free(unsafe.Pointer(ctext))
b := &button{
controlbase: newControl(id),
clicked: newEvent(),
}
C.buttonSetText(b.id, ctext)
C.buttonSetDelegate(b.id, unsafe.Pointer(b))
return b
}
func newButton(text string) *button {
return finishNewButton(C.newButton(), text)
}
func (b *button) OnClicked(e func()) {
b.clicked.set(e)
}
//export buttonClicked
func buttonClicked(xb unsafe.Pointer) {
b := (*button)(unsafe.Pointer(xb))
b.clicked.fire()
println("button clicked")
}
func (b *button) Text() string {
return C.GoString(C.buttonText(b.id))
}
func (b *button) SetText(text string) {
ctext := C.CString(text)
defer C.free(unsafe.Pointer(ctext))
C.buttonSetText(b.id, ctext)
}
type checkbox struct {
*button
}
func newCheckbox(text string) *checkbox {
return &checkbox{
button: finishNewButton(C.newCheckbox(), text),
}
}
// we don't need to define our own event here; we can just reuse Button's
// (it's all target-action anyway)
func (c *checkbox) Checked() bool {
return fromBOOL(C.checkboxChecked(c.id))
}
func (c *checkbox) SetChecked(checked bool) {
C.checkboxSetChecked(c.id, toBOOL(checked))
}
type textField struct {
*controlbase
}
func finishNewTextField(id C.id) *textField {
return &textField{
controlbase: newControl(id),
}
}
func newTextField() *textField {
return finishNewTextField(C.newTextField())
}
func newPasswordField() *textField {
return finishNewTextField(C.newPasswordField())
}
func (t *textField) Text() string {
return C.GoString(C.textFieldText(t.id))
}
func (t *textField) SetText(text string) {
ctext := C.CString(text)
defer C.free(unsafe.Pointer(ctext))
C.textFieldSetText(t.id, ctext)
}
// 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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