57 lines
1.2 KiB
Go
57 lines
1.2 KiB
Go
// 12 december 2015
|
|
|
|
package ui
|
|
|
|
import (
|
|
"unsafe"
|
|
)
|
|
|
|
// #include "pkgui.h"
|
|
import "C"
|
|
|
|
// FontButton is a Control that represents a button that the user can
|
|
// click to select a font.
|
|
type FontButton struct {
|
|
ControlBase
|
|
b *C.uiFontButton
|
|
onChanged func(*FontButton)
|
|
}
|
|
|
|
// NewFontButton creates a new FontButton.
|
|
func NewFontButton() *FontButton {
|
|
b := new(FontButton)
|
|
|
|
b.b = C.uiNewFontButton()
|
|
|
|
C.pkguiFontButtonOnChanged(b.b)
|
|
|
|
b.ControlBase = NewControlBase(b, uintptr(unsafe.Pointer(b.b)))
|
|
return b
|
|
}
|
|
|
|
// Font returns the font currently selected in the FontButton.
|
|
func (b *FontButton) Font() *FontDescriptor {
|
|
cfd := C.pkguiNewFontDescriptor()
|
|
defer C.pkguiFreeFontDescriptor(cfd)
|
|
C.uiFontButtonFont(b.b, cfd)
|
|
defer C.uiFreeFontButtonFont(cfd)
|
|
fd := &FontDescriptor{}
|
|
fd.fromLibui(cfd)
|
|
return fd
|
|
}
|
|
|
|
// OnChanged registers f to be run when the user changes the
|
|
// currently selected font in the FontButton. Only one function can
|
|
// be registered at a time.
|
|
func (b *FontButton) OnChanged(f func(*FontButton)) {
|
|
b.onChanged = f
|
|
}
|
|
|
|
//export pkguiDoFontButtonOnChanged
|
|
func pkguiDoFontButtonOnChanged(bb *C.uiFontButton, data unsafe.Pointer) {
|
|
b := ControlFromLibui(uintptr(unsafe.Pointer(bb))).(*FontButton)
|
|
if b.onChanged != nil {
|
|
b.onChanged(b)
|
|
}
|
|
}
|