Beispiel #1
0
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
}
Beispiel #2
0
func (cb *ComboBox) SetTextSelection(start, end int) {
	cb.SendMessage(win.CB_SETEDITSEL, 0, uintptr(win.MAKELONG(uint16(start), uint16(end))))
}
Beispiel #3
0
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)
}