Function fitRectToScreen

dialog.go:197–231

fitRectToScreen fits rectangle to screen. Input and output rectangles are in native pixels.

(hWnd win.HWND, r Rectangle)

// fitRectToScreen fits rectangle to screen. Input and output rectangles are in native pixels.
func fitRectToScreen(hWnd win.HWND, r Rectangle) Rectangle {
	var mi win.MONITORINFO
	mi.CbSize = uint32(unsafe.Sizeof(mi))

	if !win.GetMonitorInfo(win.MonitorFromWindow(
		hWnd, win.MONITOR_DEFAULTTOPRIMARY), &mi) {

		return r
	}

	mon := rectangleFromRECT(mi.RcWork)

	dpi := win.GetDpiForWindow(hWnd)
	mon.Height -= int(win.GetSystemMetricsForDpi(win.SM_CYCAPTION, dpi))

	if r.Width <= mon.Width {
		switch {
		case r.X < mon.X:
			r.X = mon.X
		case r.X+r.Width > mon.X+mon.Width:
			r.X = mon.X + mon.Width - r.Width
		}
	}

	if r.Height <= mon.Height {
		switch {
		case r.Y < mon.Y:
			r.Y = mon.Y
		case r.Y+r.Height > mon.Y+mon.Height:
			r.Y = mon.Y + mon.Height - r.Height
		}
	}

	return r
}

func (dlg *Dialog) Run() int {
	dlg.Show()