andlabs-ui/prev/textbox_unix.go

47 lines
1.2 KiB
Go

// +build !windows,!darwin
// 23 october 2014
package ui
import (
"unsafe"
)
// #include "gtk_unix.h"
import "C"
type textbox struct {
*scroller
textview *C.GtkTextView
}
func newTextbox() Textbox {
widget := C.gtk_text_view_new()
t := &textbox{
scroller: newScroller(widget, true, true, false), // natively scrollable, has a border, no overlay
textview: (*C.GtkTextView)(unsafe.Pointer(widget)),
}
return t
}
func (t *textbox) Text() string {
var start, end C.GtkTextIter
buf := C.gtk_text_view_get_buffer(t.textview)
C.gtk_text_buffer_get_bounds(buf, &start, &end)
// include hidden chars even though there can't be one since Textbox is explicitly unformatted just to be safe
// don't worry about embedded pixbufs or widgets; those aren't allowed either
ctext := C.gtk_text_buffer_get_text(buf, &start, &end, C.TRUE)
// not explicitly documented: have to manually free this (thanks ste in irc.gimp.net/#gtk+)
defer C.g_free(C.gpointer(unsafe.Pointer(ctext)))
return fromgstr(ctext)
}
func (t *textbox) SetText(text string) {
ctext := togstr(text)
defer freegstr(ctext)
buf := C.gtk_text_view_get_buffer(t.textview)
C.gtk_text_buffer_set_text(buf, ctext, -1) // null-terminated
}