protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
isMouseDown = false;
if (interactionState == InteractionState.Selection)
{
selectedElements = GetElementsByRectangle(SelectionRectangle);
interactionState = InteractionState.None;
Cursor = Cursors.Default;
}
else if (interactionState == InteractionState.Pan)
{
if (panSource == PanSource.Mouse)
{
interactionState = InteractionState.None;
panSource = PanSource.None;
Cursor = Cursors.Default;
}
else if (panSource == PanSource.Keyboard)
{
Cursor = CursorHelper.LoadFromResource(Properties.Resources.grab);
}
}
else
{
interactionState = InteractionState.None;
Cursor = Cursors.Default;
}
Refresh();
}
protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
if (e.KeyData == Keys.Space)
{
if (interactionState == InteractionState.None)
{
interactionState = InteractionState.Pan;
panSource = PanSource.Keyboard;
Cursor = CursorHelper.LoadFromResource(Properties.Resources.grab);
Refresh();
}
}
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
controlMouseDownLocation = e.Location;
isMouseDown = true;
bool needsRefresh = false;
mouseHitsSelection = false;
if (e.Button == MouseButtons.Left)
{
// resize
if (interactionState == InteractionState.None && selectedElements != null && selectedElements.Count == 1)
{
LayoutProperties layoutProperties = new LayoutProperties();
layoutProperties.DesignAreaLocation = DesignAreaLocation;
layoutProperties.DesignAreaSize = DesignAreaSize;
layoutProperties.ViewportLocation = ViewportLocation;
layoutProperties.ViewportSize = ViewportSize;
layoutProperties.ZoomRatio = ZoomRatio;
foreach (LayoutElement selectedElement in selectedElements)
{
TransformHandle transformHandle = DesignerHelper.GetTransformHandleType(selectedElement, layoutProperties, e.Location);
if (transformHandle != TransformHandle.None)
{
this.transformHandle = transformHandle;
interactionState = InteractionState.SizeAttempt;
needsRefresh = true;
}
}
}
// click selection
if (interactionState == InteractionState.None)
{
LayoutElement element = GetElementByLocation(controlMouseDownLocation);
if (element != null)
{
mouseHitsSelection = true;
if (KeyboardHelper.IsShiftKeyPressed)
{
if (!IsElementInSelection(element))
{
AddElementToSelection(element);
}
else
{
RemoveElementFromSelection(element);
}
}
else
{
if (!IsElementInSelection(element))
{
ClearSelection();
AddElementToSelection(element);
}
}
needsRefresh = true;
}
else
{
if (!KeyboardHelper.IsShiftKeyPressed)
{
ClearSelection();
needsRefresh = true;
}
}
}
}
if (e.Button == MouseButtons.Middle || interactionState == InteractionState.Pan)
{
interactionState = InteractionState.Pan;
if (panSource == PanSource.None)
{
panSource = PanSource.Mouse;
}
oldViewportLocation = ViewportLocation;
Cursor = CursorHelper.LoadFromResource(Properties.Resources.grabbing);
needsRefresh = true;
}
if (needsRefresh)
{
Refresh();
}
}