func (tb *ToolBar) applyDefaultButtonWidth() error {
if tb.defaultButtonWidth == 0 {
return nil
}
lParam := uintptr(
win.MAKELONG(uint16(tb.defaultButtonWidth), uint16(tb.defaultButtonWidth)))
if 0 == tb.SendMessage(win.TB_SETBUTTONWIDTH, 0, lParam) {
return newError("SendMessage(TB_SETBUTTONWIDTH)")
}
size := uint32(tb.SendMessage(win.TB_GETBUTTONSIZE, 0, 0))
height := win.HIWORD(size)
lParam = uintptr(win.MAKELONG(uint16(tb.defaultButtonWidth), height))
if win.FALSE == tb.SendMessage(win.TB_SETBUTTONSIZE, 0, lParam) {
return newError("SendMessage(TB_SETBUTTONSIZE)")
}
return nil
}
func (cb *ComboBox) SetTextSelection(start, end int) {
cb.SendMessage(win.CB_SETEDITSEL, 0, uintptr(win.MAKELONG(uint16(start), uint16(end))))
}
func (nle *numberLineEdit) WndProc(hwnd win.HWND, msg uint32, wParam, lParam uintptr) uintptr {
switch msg {
case win.WM_CHAR:
if AltDown() {
return 0
}
if ControlDown() {
if wParam == 1 {
// Ctrl+A
return 0
}
break
}
char := uint16(wParam)
text := nle.textUTF16()
text = text[len(nle.prefix) : len(text)-len(nle.suffix)]
start, end := nle.TextSelection()
start -= len(nle.prefix)
end -= len(nle.prefix)
if Key(wParam) == KeyBack {
nle.processChar(text, start, end, KeyBack, 0)
return 0
}
switch char {
case uint16('0'), uint16('1'), uint16('2'), uint16('3'), uint16('4'), uint16('5'), uint16('6'), uint16('7'), uint16('8'), uint16('9'):
if start == end && nle.decimals > 0 {
if i := uint16IndexUint16(text, decimalSepUint16); i > -1 && i < len(text)-nle.decimals && start > i {
return 0
}
}
nle.processChar(text, start, end, 0, char)
return 0
case uint16('-'):
if nle.minValue != nle.maxValue && nle.minValue >= 0 {
return 0
}
if start > 0 || uint16ContainsUint16(text, uint16('-')) && end == 0 {
return 0
}
nle.processChar(text, start, end, 0, char)
return 0
case decimalSepUint16:
if nle.decimals == 0 {
return 0
}
if start == 0 && end == 0 && len(text) > 0 && text[0] == '-' {
return 0
}
if end < len(text)-nle.decimals {
return 0
}
if i := uint16IndexUint16(text, decimalSepUint16); i > -1 && i <= start || i > end {
return 0
}
nle.processChar(text, start, end, 0, char)
return 0
default:
return 0
}
case win.WM_KEYDOWN:
switch Key(wParam) {
case KeyA:
if ControlDown() {
nle.selectNumber()
return 0
}
case KeyDelete:
text := nle.textUTF16()
text = text[len(nle.prefix) : len(text)-len(nle.suffix)]
start, end := nle.TextSelection()
start -= len(nle.prefix)
end -= len(nle.prefix)
nle.processChar(text, start, end, KeyDelete, 0)
return 0
case KeyDown:
nle.incrementValue(-nle.increment)
return 0
case KeyEnd:
start, end := nle.TextSelection()
end = len(nle.textUTF16()) - len(nle.suffix)
if !ShiftDown() {
start = end
}
nle.SetTextSelection(start, end)
return 0
case KeyHome:
start, end := nle.TextSelection()
start = len(nle.prefix)
if !ShiftDown() {
end = start
}
nle.SetTextSelection(start, end)
return 0
case KeyLeft:
var pos win.POINT
win.GetCaretPos(&pos)
lParam := uintptr(win.MAKELONG(uint16(pos.X), uint16(pos.Y)))
i := int(win.LOWORD(uint32(nle.SendMessage(win.EM_CHARFROMPOS, 0, lParam))))
if min := len(nle.prefix); i <= min {
if !ShiftDown() {
nle.SetTextSelection(min, min)
}
return 0
}
case KeyReturn:
if nle.inEditMode {
nle.endEdit()
nle.selectNumber()
return 0
}
case KeyRight:
var pos win.POINT
win.GetCaretPos(&pos)
lParam := uintptr(win.MAKELONG(uint16(pos.X), uint16(pos.Y)))
i := int(win.LOWORD(uint32(nle.SendMessage(win.EM_CHARFROMPOS, 0, lParam))))
if max := len(nle.textUTF16()) - len(nle.suffix); i >= max {
if !ShiftDown() {
nle.SetTextSelection(max, max)
}
return 0
}
case KeyUp:
nle.incrementValue(nle.increment)
return 0
}
case win.WM_GETDLGCODE:
if !nle.inEditMode {
if form := ancestor(nle); form != nil {
if dlg, ok := form.(dialogish); ok {
if dlg.DefaultButton() != nil {
// If the NumberEdit lives in a Dialog that has a
// DefaultButton, we won't swallow the return key.
break
}
}
}
}
if wParam == win.VK_RETURN {
return win.DLGC_WANTALLKEYS
}
case win.WM_KILLFOCUS:
nle.endEdit()
case win.WM_LBUTTONDOWN:
i := int(win.LOWORD(uint32(nle.SendMessage(win.EM_CHARFROMPOS, 0, lParam))))
if min := len(nle.prefix); i < min {
nle.SetFocus()
nle.SetTextSelection(min, min)
return 0
}
if max := len(nle.textUTF16()) - len(nle.suffix); i > max {
nle.SetFocus()
nle.SetTextSelection(max, max)
return 0
}
case win.WM_LBUTTONDBLCLK:
nle.selectNumber()
return 0
case win.WM_MOUSEMOVE:
i := int(win.LOWORD(uint32(nle.SendMessage(win.EM_CHARFROMPOS, 0, lParam))))
if min := len(nle.prefix); i < min {
return 0
}
if max := len(nle.textUTF16()) - len(nle.suffix); i > max {
return 0
}
case win.WM_MOUSEWHEEL:
delta := float64(int16(win.HIWORD(uint32(wParam))))
nle.incrementValue(delta / 120 * nle.increment)
return 0
case win.WM_PASTE:
ret := nle.LineEdit.WndProc(hwnd, msg, wParam, lParam)
if !nle.tryUpdateValue(true) {
nle.setTextFromValue(nle.value)
}
nle.selectNumber()
return ret
case win.WM_SETFOCUS:
nle.selectNumber()
case win.EM_SETSEL:
start := int(wParam)
end := int(lParam)
adjusted := false
if min := len(nle.prefix); start < min {
start = min
adjusted = true
}
if max := len(nle.textUTF16()) - len(nle.suffix); end < 0 || end > max {
end = max
adjusted = true
}
if adjusted {
nle.SetTextSelection(start, end)
return 0
}
}
return nle.LineEdit.WndProc(hwnd, msg, wParam, lParam)
}