示例#1
0
        /// <summary>
        /// Called before the PointerPressed event occurs.
        /// </summary>
        /// <param name="e">
        /// Event data for the event.
        /// </param>
        protected override void OnPointerPressed(PointerRoutedEventArgs e)
        {
            base.OnPointerPressed(e);

            if (this.mouseManipulator != null)
            {
                return;
            }

            this.Focus(FocusState.Pointer);
            this.CapturePointer(e.Pointer);

            var position   = e.GetCurrentPoint(this).Position;
            var button     = this.GetMouseButton(e);
            var shift      = (e.KeyModifiers & VirtualKeyModifiers.Shift) == VirtualKeyModifiers.Shift;
            var control    = (e.KeyModifiers & VirtualKeyModifiers.Control) == VirtualKeyModifiers.Control;
            int clickCount = 1;

            if (MouseButtonHelper.IsDoubleClick(this, position))
            {
                clickCount = 2;
            }

            this.mouseManipulator = this.GetManipulator(button, clickCount, shift, control);

            if (this.mouseManipulator != null)
            {
                this.mouseManipulator.Started(this.CreateManipulationEventArgs(e));
                e.Handled = true;
            }

            e.Handled = true;
        }
        /// <summary>
        /// Converts <see cref="PointerRoutedEventArgs" /> to <see cref="OxyMouseEventArgs" /> for a mouse down event.
        /// </summary>
        /// <param name="e">The <see cref="PointerRoutedEventArgs" /> instance containing the event data.</param>
        /// <param name="relativeTo">The <see cref="UIElement" /> that the event is relative to.</param>
        /// <returns>A <see cref="OxyMouseDownEventArgs" /> containing the converted event arguments.</returns>
        public static OxyMouseDownEventArgs ToMouseDownEventArgs(this PointerRoutedEventArgs e, UIElement relativeTo)
        {
            var point = e.GetCurrentPoint(relativeTo);

            int clickCount = 1;

            if (MouseButtonHelper.IsDoubleClick(relativeTo, point.Position))
            {
                clickCount = 2;
            }

            return(new OxyMouseDownEventArgs
            {
                ChangedButton = point.Properties.GetPressedMouseButton(),
                Position = point.Position.ToScreenPoint(),
                ModifierKeys = e.GetModifierKeys(),
                ClickCount = clickCount
            });
        }