/// <summary>
/// 重载键盘监听
/// </summary>
/// <param name="e"></param>
protected override void OnKeyDown(KeyEventArgs e)
{
HandleQuickSnap(e);
if (m_nodeMoveHelper.IsEmpty == false)
{
m_nodeMoveHelper.OnKeyDown(m_canvaswrapper, e);
if (e.Handled)
{
return;
}
}
base.OnKeyDown(e);
if (e.Handled)
{
UpdateCursor();
return;
}
if (m_editTool != null)
{
m_editTool.OnKeyDown(m_canvaswrapper, e);
if (e.Handled)
{
return;
}
}
if (m_newObject != null)
{
m_newObject.OnKeyDown(m_canvaswrapper, e);
if (e.Handled)
{
return;
}
}
foreach (IDrawObject obj in m_model.SelectedObjects)
{
obj.OnKeyDown(m_canvaswrapper, e);
if (e.Handled)
{
return;
}
}
if ((Control.ModifierKeys & Keys.Control) == Keys.Control)
{
if (e.KeyCode == Keys.G) //ctrl+g网格是否显示
{
m_model.GridLayer.Enabled = !m_model.GridLayer.Enabled;
DoInvalidate(true);
}
if (e.KeyCode == Keys.S)
{
RunningSnapsEnabled = !RunningSnapsEnabled;
MessageBox.Show("1");
if (!RunningSnapsEnabled)
{
m_snappoint = null;
}
DoInvalidate(false);
}
return;
}
if (e.KeyCode == Keys.Escape) //取消选择
{
CommandEscape();
}
if (e.KeyCode == Keys.P) //移动画布工具
{
CommandPan();
}
if (e.KeyCode == Keys.S) //画单条线工具
{
RunningSnapsEnabled = !RunningSnapsEnabled;
if (!RunningSnapsEnabled)
{
m_snappoint = null;
}
DoInvalidate(false);
}
if (e.KeyCode >= Keys.D1 && e.KeyCode <= Keys.D9) //数字键盘选择线条粗细颜色
{
int layerindex = (int)e.KeyCode - (int)Keys.D1;
if (layerindex >= 0 && layerindex < m_model.Layers.Length)
{
m_model.ActiveLayer = m_model.Layers[layerindex];
DoInvalidate(true);
}
}
if (e.KeyCode == Keys.Delete) //删除选中
{
CommandDeleteSelected();
}
if (e.KeyCode == Keys.O) //建立两线延长线直到相交点
{
CommandEdit("linesmeet");
}
UpdateCursor();
}
