andlabs-ui/textfield_windows.go

105 lines
2.2 KiB
Go

// 15 july 2014
package ui
import (
"unsafe"
)
// #include "winapi_windows.h"
import "C"
type textfield struct {
_hwnd C.HWND
_textlen C.LONG
changed *event
}
var editclass = toUTF16("EDIT")
func startNewTextField(style C.DWORD) *textfield {
hwnd := C.newControl(editclass,
style | C.textfieldStyle,
C.textfieldExtStyle) // WS_EX_CLIENTEDGE without WS_BORDER will show the canonical visual styles border (thanks to MindChild in irc.efnet.net/#winprog)
t := &textfield{
_hwnd: hwnd,
changed: newEvent(),
}
C.controlSetControlFont(t._hwnd)
C.setTextFieldSubclass(t._hwnd, unsafe.Pointer(t))
return t
}
func newTextField() *textfield {
return startNewTextField(0)
}
func newPasswordField() *textfield {
return startNewTextField(C.ES_PASSWORD)
}
func (t *textfield) Text() string {
return baseText(t)
}
func (t *textfield) SetText(text string) {
baseSetText(t, text)
}
func (t *textfield) OnChanged(f func()) {
t.changed.set(f)
}
func (t *textfield) Invalid(reason string) {
if reason == "" {
C.textfieldHideInvalidBalloonTip(t._hwnd)
return
}
C.textfieldSetAndShowInvalidBalloonTip(t._hwnd, toUTF16(reason))
}
//export textfieldChanged
func textfieldChanged(data unsafe.Pointer) {
t := (*textfield)(data)
println("changed")
t.changed.fire()
}
func (t *textfield) hwnd() C.HWND {
return t._hwnd
}
func (t *textfield) textlen() C.LONG {
return t._textlen
}
func (t *textfield) settextlen(len C.LONG) {
t._textlen = len
}
func (t *textfield) setParent(p *controlParent) {
basesetParent(t, p)
}
func (t *textfield) allocate(x int, y int, width int, height int, d *sizing) []*allocation {
return baseallocate(t, x, y, width, height, d)
}
const (
// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
textfieldWidth = 107 // this is actually the shorter progress bar width, but Microsoft only indicates as wide as necessary
textfieldHeight = 14
)
func (t *textfield) preferredSize(d *sizing) (width, height int) {
return fromdlgunitsX(textfieldWidth, d), fromdlgunitsY(textfieldHeight, d)
}
func (t *textfield) commitResize(a *allocation, d *sizing) {
basecommitResize(t, a, d)
}
func (t *textfield) getAuxResizeInfo(d *sizing) {
basegetAuxResizeInfo(t, d)
}