缩放和平移GMap.net
-
14-11-2019 - |
解决方案
快速查看代码显示 GMapControl
是一个 ItemsContainer
.
你应该可以重新设计 ItemsPanel
模板并提供 IsManipulationEnabled
那里的财产:
<g:GMapControl x:Name="Map" ...>
<g:GMapControl.ItemsPanel>
<ItemsPanelTemplate>
<Canvas IsManipulationEnabled="True" />
</ItemsPanelTemplate>
</g:GMapControl.ItemsPanel>
<!-- ... -->
在这一点上,你需要连接 Window
:
<Window ...
ManipulationStarting="Window_ManipulationStarting"
ManipulationDelta="Window_ManipulationDelta"
ManipulationInertiaStarting="Window_InertiaStarting">
并在后面的代码中提供适当的方法(无耻地窃取并改编自此 MSDN演练):
void Window_ManipulationStarting(
object sender, ManipulationStartingEventArgs e)
{
e.ManipulationContainer = this;
e.Handled = true;
}
void Window_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
// uses the scaling value to supply the Zoom amount
this.Map.Zoom = e.DeltaManipulation.Scale.X;
e.Handled = true;
}
void Window_InertiaStarting(
object sender, ManipulationInertiaStartingEventArgs e)
{
// Decrease the velocity of the Rectangle's resizing by
// 0.1 inches per second every second.
// (0.1 inches * 96 pixels per inch / (1000ms^2)
e.ExpansionBehavior.DesiredDeceleration = 0.1 * 96 / (1000.0 * 1000.0);
e.Handled = true;
}
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