Exemplo n.º 1
0
func WndProc(hwnd w32.HWND, msg uint32, wparam, lparam uintptr) uintptr {
	wnd := GetMsgHandler(hwnd)
	if wnd == nil {
		return uintptr(w32.DefWindowProc(hwnd, msg, wparam, lparam))
	}

	var rc uintptr
	switch msg {
	case w32.WM_ACTIVATE:
		if wparam&0xffff != 0 {
			/* This window has just been granted focus, so flag our internal
			** key state as stale. We can't simply refresh our state because
			** win32's GetKeyboardState isn't always accurate at this point
			** in the event stream. */
			wnd.keysStale = true
		}
		rc = w32.DefWindowProc(hwnd, msg, wparam, lparam)

	case w32.WM_SHOWWINDOW:
		w32.SetFocus(hwnd)
		wnd.restoreCursor()

	case w32.WM_LBUTTONDOWN, w32.WM_RBUTTONDOWN, w32.WM_MBUTTONDOWN:
		wnd.button = wnd.button | buttonForDetail(msg)
		var bpe wde.MouseDownEvent
		bpe.Which = buttonForDetail(msg)
		bpe.Where.X = int(lparam) & 0xFFFF
		bpe.Where.Y = int(lparam>>16) & 0xFFFF
		wnd.lastX = bpe.Where.X
		wnd.lastY = bpe.Where.Y
		wnd.events <- bpe

	case w32.WM_LBUTTONUP, w32.WM_RBUTTONUP, w32.WM_MBUTTONUP:
		wnd.button = wnd.button & ^buttonForDetail(msg)
		var bpe wde.MouseUpEvent
		bpe.Which = buttonForDetail(msg)
		bpe.Where.X = int(lparam) & 0xFFFF
		bpe.Where.Y = int(lparam>>16) & 0xFFFF
		wnd.lastX = bpe.Where.X
		wnd.lastY = bpe.Where.Y
		wnd.events <- bpe

	case w32.WM_MOUSEWHEEL:
		var me wde.MouseEvent
		screenX := int(lparam) & 0xFFFF
		screenY := int(lparam>>16) & 0xFFFF
		me.Where.X, me.Where.Y, _ = w32.ScreenToClient(wnd.hwnd, screenX, screenY)
		button := wde.WheelDownButton
		delta := int16((wparam >> 16) & 0xFFFF)
		if delta > 0 {
			button = wde.WheelUpButton
		}
		wnd.lastX = me.Where.X
		wnd.lastX = me.Where.Y
		wnd.events <- wde.MouseDownEvent{me, button}
		wnd.events <- wde.MouseUpEvent{me, button}

	case w32.WM_MOUSEMOVE:
		var mme wde.MouseMovedEvent
		mme.Where.X = int(lparam) & 0xFFFF
		mme.Where.Y = int(lparam>>16) & 0xFFFF
		if wnd.lastX != wnd.noX {
			mme.From.X = int(wnd.lastX)
			mme.From.Y = int(wnd.lastY)
		} else {
			mme.From.X = mme.Where.X
			mme.From.Y = mme.Where.Y
		}
		wnd.lastX = mme.Where.X
		wnd.lastY = mme.Where.Y

		if !wnd.trackMouse {
			var tme w32.TRACKMOUSEEVENT
			tme.CbSize = uint32(unsafe.Sizeof(tme))
			tme.DwFlags = w32.TME_LEAVE
			tme.HwndTrack = hwnd
			tme.DwHoverTime = w32.HOVER_DEFAULT
			w32.TrackMouseEvent(&tme)
			wnd.trackMouse = true
			wnd.restoreCursor()
			wnd.events <- wde.MouseEnteredEvent(mme)
		} else {
			if wnd.button == 0 {
				wnd.events <- mme
			} else {
				var mde wde.MouseDraggedEvent
				mde.MouseMovedEvent = mme
				mde.Which = wnd.button
				wnd.events <- mde
			}
		}

	case w32.WM_MOUSELEAVE:
		wnd.trackMouse = false

		var wee wde.MouseExitedEvent
		// TODO: get real position
		wee.Where.Y = wnd.lastX
		wee.Where.X = wnd.lastY
		wnd.events <- wee

	case w32.WM_SYSKEYDOWN, w32.WM_KEYDOWN:
		translatable := w32.MapVirtualKeyEx(uint(wparam), w32.MAPVK_VK_TO_CHAR, w32.HKL(0))
		wnd.keyDown = keyFromVirtualKeyCode(wparam)
		wnd.keysDown[wnd.keyDown] = true
		wnd.checkKeyState()
		wnd.events <- wde.KeyDownEvent{wnd.keyDown}
		if translatable == 0 {
			kpe := wde.KeyTypedEvent{
				wde.KeyEvent{wnd.keyDown},
				"",
				wnd.constructChord(),
			}
			wnd.events <- kpe
		}
	case w32.WM_SYSCHAR, w32.WM_CHAR:
		glyph := syscall.UTF16ToString([]uint16{uint16(wparam)})
		kpe := wde.KeyTypedEvent{
			wde.KeyEvent{wnd.keyDown},
			glyph,
			wnd.constructChord(),
		}
		wnd.events <- kpe
	case w32.WM_SYSKEYUP, w32.WM_KEYUP:
		keyUp := keyFromVirtualKeyCode(wparam)
		delete(wnd.keysDown, keyUp)
		wnd.checkKeyState()
		wnd.events <- wde.KeyUpEvent{
			keyUp,
		}

	case w32.WM_SIZE:
		width := int(lparam) & 0xFFFF
		height := int(lparam>>16) & 0xFFFF
		wnd.buffer = NewDIB(image.Rect(0, 0, width, height))
		wnd.events <- wde.ResizeEvent{width, height}
		rc = w32.DefWindowProc(hwnd, msg, wparam, lparam)

	case w32.WM_PAINT:
		wnd.Repaint()
		rc = w32.DefWindowProc(hwnd, msg, wparam, lparam)

	case WDEM_UI_THREAD:
		f := <-wnd.uiTasks
		f()

	case w32.WM_CLOSE:
		wnd.events <- wde.CloseEvent{}

	case w32.WM_DESTROY:
		w32.PostQuitMessage(0)

	default:
		rc = w32.DefWindowProc(hwnd, msg, wparam, lparam)
	}

	return rc
}
Exemplo n.º 2
0
// Focus set the focus on the window.
func (win *window) Focus() {
	w32.SetFocus(win.id)
}
Exemplo n.º 3
0
func (this *ControlBase) Focus() {
	w32.SetFocus(this.hwnd)
}
Exemplo n.º 4
0
func WndProc(hwnd w32.HWND, msg uint, wparam, lparam uintptr) uintptr {
	wnd := GetMsgHandler(hwnd)
	if wnd == nil {
		return uintptr(w32.DefWindowProc(hwnd, msg, wparam, lparam))
	}

	var rc uintptr
	switch msg {
	case w32.WM_SHOWWINDOW:
		w32.SetFocus(hwnd)
	case w32.WM_LBUTTONDOWN, w32.WM_RBUTTONDOWN, w32.WM_MBUTTONDOWN:
		wnd.button = wnd.button | buttonForDetail(msg)
		var bpe wde.MouseDownEvent
		bpe.Which = buttonForDetail(msg)
		bpe.Where.X = int(lparam) & 0xFFFF
		bpe.Where.Y = int(lparam>>16) & 0xFFFF
		wnd.lastX = bpe.Where.X
		wnd.lastY = bpe.Where.Y
		wnd.events <- bpe

	case w32.WM_LBUTTONUP, w32.WM_RBUTTONUP, w32.WM_MBUTTONUP:
		wnd.button = wnd.button & ^buttonForDetail(msg)
		var bpe wde.MouseUpEvent
		bpe.Which = buttonForDetail(msg)
		bpe.Where.X = int(lparam) & 0xFFFF
		bpe.Where.Y = int(lparam>>16) & 0xFFFF
		wnd.lastX = bpe.Where.X
		wnd.lastY = bpe.Where.Y
		wnd.events <- bpe

	case w32.WM_MOUSEMOVE:
		var mme wde.MouseMovedEvent
		mme.Where.X = int(lparam) & 0xFFFF
		mme.Where.Y = int(lparam>>16) & 0xFFFF
		if wnd.lastX != wnd.noX {
			mme.From.X = int(wnd.lastX)
			mme.From.Y = int(wnd.lastY)
		} else {
			mme.From.X = mme.Where.X
			mme.From.Y = mme.Where.Y
		}
		wnd.lastX = mme.Where.X
		wnd.lastY = mme.Where.Y

		if !wnd.trackMouse {
			var tme w32.TRACKMOUSEEVENT
			tme.CbSize = uint(unsafe.Sizeof(tme))
			tme.DwFlags = w32.TME_LEAVE
			tme.HwndTrack = hwnd
			tme.DwHoverTime = w32.HOVER_DEFAULT
			w32.TrackMouseEvent(&tme)
			wnd.trackMouse = true
			wnd.events <- wde.MouseEnteredEvent(mme)
		} else {
			if wnd.button == 0 {
				wnd.events <- mme
			} else {
				var mde wde.MouseDraggedEvent
				mde.MouseMovedEvent = mme
				mde.Which = wnd.button
				wnd.events <- mde
			}
		}

	case w32.WM_MOUSELEAVE:
		wnd.trackMouse = false

		var wee wde.MouseExitedEvent
		// TODO: get real position
		wee.Where.Y = wnd.lastX
		wee.Where.X = wnd.lastY
		wnd.events <- wee

	case w32.WM_SYSKEYDOWN:
		keyDown = keyFromVirtualKeyCode(wparam)
		keysDown[wde.KeyLeftAlt] = true
		keysDown[keyDown] = true
		ke := wde.KeyEvent{
			keyDown,
		}
		wnd.events <- wde.KeyDownEvent(ke)
	case w32.WM_KEYDOWN:
		keyDown = keyFromVirtualKeyCode(wparam)
		keysDown[keyDown] = true
		ke := wde.KeyEvent{
			keyDown,
		}
		wnd.events <- wde.KeyDownEvent(ke)
	case w32.WM_SYSCHAR:
		glyph := syscall.UTF16ToString([]uint16{uint16(wparam)})
		ke := wde.KeyEvent{
			keyDown,
		}
		kpe := wde.KeyTypedEvent{
			ke,
			glyph,
			wde.ConstructChord(keysDown),
		}
		wnd.events <- kpe
	case w32.WM_CHAR:
		glyph := syscall.UTF16ToString([]uint16{uint16(wparam)})
		ke := wde.KeyEvent{
			keyDown,
		}
		kpe := wde.KeyTypedEvent{
			ke,
			glyph,
			wde.ConstructChord(keysDown),
		}
		wnd.events <- kpe
	case w32.WM_SYSKEYUP:
		keyUp := keyFromVirtualKeyCode(wparam)
		delete(keysDown, wde.KeyLeftAlt)
		delete(keysDown, keyUp)
		wnd.events <- wde.KeyUpEvent{
			keyUp,
		}
	case w32.WM_KEYUP:
		keyUp := keyFromVirtualKeyCode(wparam)
		delete(keysDown, keyUp)
		wnd.events <- wde.KeyUpEvent{
			keyUp,
		}

	case w32.WM_SIZE:
		width := int(lparam) & 0xFFFF
		height := int(lparam>>16) & 0xFFFF
		wnd.buffer = NewDIB(image.Rect(0, 0, width, height))
		wnd.events <- wde.ResizeEvent{width, height}
		rc = w32.DefWindowProc(hwnd, msg, wparam, lparam)

	case w32.WM_PAINT:
		rc = w32.DefWindowProc(hwnd, msg, wparam, lparam)

	case w32.WM_CLOSE:
		UnRegMsgHandler(hwnd)
		w32.DestroyWindow(hwnd)
		wnd.events <- wde.CloseEvent{}

	case w32.WM_DESTROY:
		w32.PostQuitMessage(0)

	default:
		rc = w32.DefWindowProc(hwnd, msg, wparam, lparam)
	}

	return rc
}