定义最小规模 [英] define a minimum scale

问题描述

  Iim使用操作来扩展我的用户控件。我想知道如何


申请最小规模 。我的意思是，我不想减少我的用户控制权 更多


比我的usercontrol min widht和min height。



这是我的申请：

xaml：

usingSystem; usingSystem.Collections.Generic; usingSystem.Linq; usingSystem.Text; usingSystem.Windows; usingSystem.Windows.Controls; usingSystem.Windows.Data; usingSystem.Windows.Documents; usingSystem .Windows.Input; usingSystem.Windows.Media; usingSystem.Windows.Media.Imaging; usingSystem.Windows.Shapes; usingSystem.Windows.Threading; usingMicrosoft.Surface; usingMicrosoft.Surface.Presentation; usingMicrosoft.Surface.Presentation.Controls; usingMicrosoft .Surface.Presentation.Manipulations; usingSystem.Windows.Interop; namespace



{teste2 ///< summary> ///
$
SurfaceWindow {///< summary> /// Default constructor.///</summary>/// #region  Class

$
MembersList< Contact>

downContacts; doublelastExpansionDelta; Affine2DManipulationProcessormanipulationProcessor; Affine2DInertiaProcessorinertiaProcessor; #endregion



＃regionProperties #regage $
{

} ZoomSensitivity DPpublicdoubleZoomSensitivityget {

return（double）GetValue（ZoomSensitivityProperty）; } set {

SetValue（ZoomSensitivityProperty，value）; } //使用DependencyProperty作为ZoomSensitivity的
后备存储。这样可以实现动画，样式，装订，

等... publicstaticreadonlyDependencyPropertyZoomSensitivityProperty

= DependencyProperty.Register（" ZoomSensitivity"，typeof（double），

typeof（SurfaceWindow1），newUIPropertyMetadata（6.0））; #endregion

#region

{

} PanSensitivity DPpublicdoublePanSensitivityget {

return（double）GetValue（PanSensitivityProperty）; } set {

SetValue（PanSensitivityProperty，value）; //使用DependencyProperty作为PanSensitivity的
后备存储。这样可以实现动画，样式，装订，

等... publicstaticreadonlyDependencyPropertyPanSensitivityProperty

= DependencyProperty.Register（"PanSensitivity"，typeof（double），

typeof（SurfaceWindow1），newUIPropertyMetadata（1.0））; #endregion

#region

{

} TiltSensitivity DPpublicdoubleTiltSensitivityget {

return（double）GetValue（TiltSensitivityProperty）; } set {

SetValue（TiltSensitivityProperty，value）; //使用DependencyProperty作为PanSensitivity的
后备存储。这样可以实现动画，样式，装订，

等... publicstaticreadonlyDependencyPropertyTiltSensitivityProperty

= DependencyProperty.Register（" TiltSensitivity"，typeof（double），

typeof（SurfaceWindow1），newUIPropertyMetadata（0.5））;＃endregion 

  #endregion {

InitializeComponent（）;

lastExpansionDelta = 0;

downContacts =

targetImage.AddHandler（

targetImage.AddHandler（

targetImage.AddHandler（publicSurfaceWindow1） （）newList< Contact>（）; this.manipulationProcessor

=

newAffine2DManipulationProcessor（Affine2DManipulations.TranslateX | Affine2DManipulations.TranslateY | Affine2DManipulations.Scale

，this，false）; this.manipulationProcessor.Affine2DManipulationCompleted + =

newEventHandler< Affine2DOperationCompletedEventArgs>（manipulationProcessor_Affine2DManipulationCompleted）; this.manipulationProcessor.Affine2DManipulationDelta

+ =

newEventHandler< Affine2DOperationDeltaEventArgs>（manipulationProcessor_Affine2DManipulationDelta）; this.manipulationProcessor.Affine2DManipulationStarted

+ =

newEventHandler< Affine2DOperationStartedEventArgs>（manipulationProcessor_Affine2DManipulationStarted）; this.inertiaProcessor

= newAffine2DInertiaProcessor（）; this.inertiaProcessor.Affine2DInertiaDelta + =

newEventHandler< Affine2DOperationDeltaEventArgs>（inertiaProcessor_Affine2DInertiaDelta）; this.inertiaProcessor.Affine2DInertiaCompleted

+ =

newEventHandler< Affine2DOperationCompletedEventArgs>（inertiaProcessor_Affine2DInertiaCompleted）; Contacts.PreviewContactDownEvent，$
newContactEventHandler（targetImage_PreviewContactDown））; Contacts.PreviewContactChangedEvent，

，$
newContactEventHandler（targetImage_PreviewContactChanged））; Contacts.PreviewContactUpEvent，

newContactEventHandler（targetImage_PreviewCo） ntactUp））; //添加处理器为
应用程序激活eventsAddActivationHandlers（）;

}

  ///< summary> / //窗口即将关闭时发生。 ///< / summary> ///< param


name =" e">< / param> {protectedoverridevoidOnClosed（EventArgse）base.OnClosed（e） ; //


删除应用程序激活事件的处理程序.RemoveActivationHandlers（）;

} ///< summary> ///为应用程序激活添加处理程序

events.///</summary>{privatevoidAddActivationHandlers()//订阅表面


申请激活事件} ApplicationLauncher.ApplicationActivated + =

OnApplicationActivated; ApplicationLauncher.ApplicationPreviewed + =

OnApplicationPreviewed; ApplicationLauncher.ApplicationDeactivated + =

OnApplicationDeactivated; ///< summary> ///删除Application的处理程序

激活事件///</summary>{privatevoidRemoveActivationHandlers()//

取消订阅表面应用程序激活

events} ApplicationLauncher。 ApplicationActivated - =

OnApplicationActivated; Applicatio nLauncher.ApplicationPreviewed - =
$
OnApplicationPreviewed; ApplicationLauncher.ApplicationDeactivated - =
$
OnApplicationDeactivated; ///< summary> ///当应用程序为$ b $时调用b

已激活.// /&tt;/summary>///<param name =" sender">< / param> ///< param


name =" e">< / param> {privatevoidOnApplicationActivated（objectsender，

EventArgse）// TODO：启用音频，动画此处} ///< summary> ; ///当应用程序处于预览模式时，这称为


.///</summary>///<param

name = " sender">< / param> ///< param

name =" e">< / param> {privatevoidOnApplicationPreviewed（objectsender，

EventArgse）// TODO：如果已启用音频，则禁用此处// TODO：可选启用此处
动画} ///< summary> ///当应用程序已经
deactivated.///</summary>///<param name =" sender">< / param> ///< param


name =" e">< / param> {privatevoidOnApplicationDeactivated（objectsender，

EventArgse）// TODO：禁用音频，动画在这里}

  #region

{

}

{

}

{

}

{

ProcessManipulationInertiaDelta（e）;

}惯性处理器事件

HandlersvoidinertiaProcessorZoom_Affine2DInertiaCompleted（objectsender，

Affine2DOperationCompletedEventArgse）voidinertiaProcessorZoom_Affine2DInertiaDelta（objectsender，

Affine2DOperationDeltaEventArgse）voidinertiaProcessor_Affine2DInertiaCompleted（objectsender，

，

Affine2DOperationCompletedEventArgse）voidinertiaProcessor_Affine2DInertiaDelta（objectsender，

Affine2DOperationDeltaEventArgse）#endregion

#region

{

inertiaProcessor.End（）;

}

{

ProcessManipulationInertiaDel ta（e）;

}

 

{

containerRect.Width = 1024;

containerRect.Height = 798;

 

 

 

  ; $
 

 

 

 

  ; $
 

 

 

{

矩阵= transformMatrix.Matrix;

}

matrix.Translate（-e.Delta.X，-e.Delta.Y）;

 

 

 

{

 

  < br $> b $ b 

 

 

 

transformCenter = matrix .Transform（transformCenter）;

matrix.RotateAt（e.RotationDelta，transformCenter.X，transformCenter.Y）;

matrix.ScaleAt（e.ScaleDelta，e.ScaleDelta ，transformCenter.X，

transformCenter.Y）;

}

 

 

targetImage.RenderTransform =

 

}

{

} Ma nipulation处理器事件

HandlersvoidmanipulationProcessor_Affine2DManipulationStarted（objectsender，

Affine2DOperationStartedEventArgse）voidmanipulationProcessor_Affine2DManipulationDelta（objectsender，

Affine2DOperationDeltaEventArgse）privatevoidProcessManipulationInertiaDelta（Affine2DOperationDeltaEventArgse）RectcontainerRect

t = newRect（this.RenderSize）; UIElementcontent = this.targetImage

asUIElement; Matrixmatrix = newMatrix（）; MatrixTransformtransformMatrix =

targetImage.RenderTransform asMatrixTransform; if（transformMatrix！ =

null）if（this.targetImage isFrameworkElement）FrameworkElementframeworkElement =

this.targetImage asFrameworkElement; PointtransformCenter =

this.TranslatePoint（e.ManipulationOrigin ，$
frameworkElement）; newMatrixTransform（matrix）; voidmanipulationProcessor_Affine2DManipulationCompleted（objectsender，

Affine2DOperationCompletedEventArgse）#endregion

#region

{

}

{

position.Y< 0 ||

position.X> targetImage.Width ||

position.Y> targetImage.Height）
$
{UI事件HandlersprivatevoidtargetImage_PreviewContactDown（objectsender，

ContactEventArgse）privatevoidtargetImage_PreviewContactChanged（objectsender，

ContactEventArgse）if（！e.Contact。 IsFingerRecognized）return; Pointposition =

e.Contact.GetPosition（this）; if（position.X< 0 || //

e.Contact.Capture（targetImage） ，$
System.Windows.Input.CaptureMode.None）; e.Contact.Capture（

 

downContacts.Remove（e。联系）;
$
} this，CaptureMode.None）; if（downContacts.Contains（e.Contact））else {//

e.Contact.Capture（targetImage，

System.Windows.Input.CaptureMode.SubTree）; e.Contact.Capture（
$
manipulationProcessor.BeginTrack（e.Contact）;

e.Handled =

downContacts.Add（e.Contact）;

 

}

}

{this，

CaptureMode.SubTree）;  true; if（！downContacts.Contains（e.Contact））privatevoidtargetImage_PreviewContactUp（ objectsender，
$
ContactEventArgse）if（！e.Contact.IsFingerRecognized）return; // e.Contact.Capture（targetImage，

，System.Windows.Input.CaptureMode。无）; e.Contact.Capture（

downContacts.Remove（e.Contact）;

}

  this，CaptureMode.None ）;＃endregion

 }

}

 

 

 < s：SurfaceWindowx：Class =" teste2.SurfaceWindow1" xmlns =" http://schemas.microsoft.com/winfx/2006/xaml/presentation " xmlns：x =" http://schemas.microsoft.com/winfx/2006/xaml " xmlns：s =" http://schemas.microsoft.com/surface/2008 " xmlns：l =" clr-namespace：teste2" Title =" teste2">< S：SurfaceWindow.Resources>< ImageBrushx：密钥= QUOT; WindowBa ckground"拉伸= QUOT;无"不透明度= QUOT; 0.6"的ImageSource = QUOT;包：//应用：,,, /资源/ WindowBackground.jpg" />< /秒：SurfaceWindow.Resources>< GridBackground =" {StaticResourceWindowBackground}" Name =" tt"

>< ViewboxName =" targetImage" Width =" 1024" Height =" 798" MinWidth =" 1024" MinHeight =" 798">< l：testcontrolWidth =" 1024

4

" Height =" 798" MinHeight =" 798" MinWidth = " 1024">< / l：testcontrol>< / Viewbox>< /< / Grid> s：SurfaceWindow>

 Iim using manipulation to scale my user control . And i want to know how to
apply a minimun scale . I mean , i dont want to reduce my user control  more
than my usercontrol min widht and min height.

here is my application:
xaml:
usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Windows;usingSystem.Windows.Controls;usingSystem.Windows.Data;usingSystem.Windows.Documents;usingSystem.Windows.Input;usingSystem.Windows.Media;usingSystem.Windows.Media.Imaging;usingSystem.Windows.Shapes;usingSystem.Windows.Threading;usingMicrosoft.Surface;usingMicrosoft.Surface.Presentation;usingMicrosoft.Surface.Presentation.Controls;usingMicrosoft.Surface.Presentation.Manipulations;usingSystem.Windows.Interop;namespace

{teste2///<summary>///Interaction logic for
SurfaceWindow1.xaml///</summary>publicpartialclassSurfaceWindow1:
SurfaceWindow{///<summary>///Default constructor.///</summary>///#region Class
MembersList<Contact>
downContacts;doublelastExpansionDelta;Affine2DManipulationProcessormanipulationProcessor;Affine2DInertiaProcessorinertiaProcessor;#endregion

#regionProperties#region
{
}ZoomSensitivity DPpublicdoubleZoomSensitivityget{
return(double)GetValue(ZoomSensitivityProperty); }set{
SetValue(ZoomSensitivityProperty, value); }// Using a DependencyProperty as the
backing store for ZoomSensitivity. This enables animation, styling, binding,
etc...publicstaticreadonlyDependencyPropertyZoomSensitivityProperty
=DependencyProperty.Register("ZoomSensitivity", typeof(double),
typeof(SurfaceWindow1), newUIPropertyMetadata(6.0));#endregion
#region
{
}PanSensitivity DPpublicdoublePanSensitivityget{
return(double)GetValue(PanSensitivityProperty); }set{
SetValue(PanSensitivityProperty, value); }// Using a DependencyProperty as the
backing store for PanSensitivity. This enables animation, styling, binding,
etc...publicstaticreadonlyDependencyPropertyPanSensitivityProperty
=DependencyProperty.Register("PanSensitivity", typeof(double),
typeof(SurfaceWindow1), newUIPropertyMetadata(1.0));#endregion
#region
{
}TiltSensitivity DPpublicdoubleTiltSensitivityget{
return(double)GetValue(TiltSensitivityProperty); }set{
SetValue(TiltSensitivityProperty, value); }// Using a DependencyProperty as the
backing store for PanSensitivity. This enables animation, styling, binding,
etc...publicstaticreadonlyDependencyPropertyTiltSensitivityProperty
=DependencyProperty.Register("TiltSensitivity", typeof(double),
typeof(SurfaceWindow1), newUIPropertyMetadata(0.5));#endregion 
 #endregion{
InitializeComponent();
lastExpansionDelta = 0;
downContacts =
targetImage.AddHandler(
targetImage.AddHandler(
targetImage.AddHandler(publicSurfaceWindow1()newList<Contact>();this.manipulationProcessor
=
newAffine2DManipulationProcessor(Affine2DManipulations.TranslateX|Affine2DManipulations.TranslateY|Affine2DManipulations.Scale
,this, false);this.manipulationProcessor.Affine2DManipulationCompleted +=
newEventHandler<Affine2DOperationCompletedEventArgs>(manipulationProcessor_Affine2DManipulationCompleted);this.manipulationProcessor.Affine2DManipulationDelta
+=
newEventHandler<Affine2DOperationDeltaEventArgs>(manipulationProcessor_Affine2DManipulationDelta);this.manipulationProcessor.Affine2DManipulationStarted
+=
newEventHandler<Affine2DOperationStartedEventArgs>(manipulationProcessor_Affine2DManipulationStarted);this.inertiaProcessor
= newAffine2DInertiaProcessor();this.inertiaProcessor.Affine2DInertiaDelta +=
newEventHandler<Affine2DOperationDeltaEventArgs>(inertiaProcessor_Affine2DInertiaDelta);this.inertiaProcessor.Affine2DInertiaCompleted
+=
newEventHandler<Affine2DOperationCompletedEventArgs>(inertiaProcessor_Affine2DInertiaCompleted);Contacts.PreviewContactDownEvent,
newContactEventHandler(targetImage_PreviewContactDown));Contacts.PreviewContactChangedEvent,
,
newContactEventHandler(targetImage_PreviewContactChanged));Contacts.PreviewContactUpEvent,
newContactEventHandler(targetImage_PreviewContactUp));// Add handlers for
Application activation eventsAddActivationHandlers();
}
 ///<summary>///Occurs when the window is about to close. ///</summary>///<param
name="e"></param>{protectedoverridevoidOnClosed(EventArgse)base.OnClosed(e);//
Remove handlers for Application activation eventsRemoveActivationHandlers();
}///<summary>///Adds handlers for Application activation
events.///</summary>{privatevoidAddActivationHandlers()// Subscribe to surface
application activation events}ApplicationLauncher.ApplicationActivated +=
OnApplicationActivated;ApplicationLauncher.ApplicationPreviewed +=
OnApplicationPreviewed;ApplicationLauncher.ApplicationDeactivated +=
OnApplicationDeactivated;///<summary>///Removes handlers for Application
activation events.///</summary>{privatevoidRemoveActivationHandlers()//
Unsubscribe from surface application activation
events}ApplicationLauncher.ApplicationActivated -=
OnApplicationActivated;ApplicationLauncher.ApplicationPreviewed -=
OnApplicationPreviewed;ApplicationLauncher.ApplicationDeactivated -=
OnApplicationDeactivated;///<summary>///This is called when application has been
activated.///</summary>///<param name="sender"></param>///<param
name="e"></param>{privatevoidOnApplicationActivated(objectsender,
EventArgse)//TODO: enable audio, animations here}///<summary>///This is called
when application is in preview mode.///</summary>///<param
name="sender"></param>///<param
name="e"></param>{privatevoidOnApplicationPreviewed(objectsender,
EventArgse)//TODO: Disable audio here if it is enabled//TODO: optionally enable
animations here}///<summary>///This is called when application has been
deactivated.///</summary>///<param name="sender"></param>///<param
name="e"></param>{privatevoidOnApplicationDeactivated(objectsender,
EventArgse)//TODO: disable audio, animations here}
 #region
{
}
{
}
{
}
{
ProcessManipulationInertiaDelta(e);
}Inertia Processor Event
HandlersvoidinertiaProcessorZoom_Affine2DInertiaCompleted(objectsender,
Affine2DOperationCompletedEventArgse)voidinertiaProcessorZoom_Affine2DInertiaDelta(objectsender,
Affine2DOperationDeltaEventArgse)voidinertiaProcessor_Affine2DInertiaCompleted(objectsender,
,
Affine2DOperationCompletedEventArgse)voidinertiaProcessor_Affine2DInertiaDelta(objectsender,
Affine2DOperationDeltaEventArgse)#endregion
#region
{
inertiaProcessor.End();
}
{
ProcessManipulationInertiaDelta(e);
}
 
{
containerRect.Width = 1024;
containerRect.Height = 798;
 
 
 
 
 
 
 
 
 
 
 
 
{
matrix = transformMatrix.Matrix;
}
matrix.Translate(-e.Delta.X, -e.Delta.Y);
 
 
 
{
 
 
 
 
 
 
transformCenter = matrix.Transform(transformCenter);
matrix.RotateAt(e.RotationDelta, transformCenter.X, transformCenter.Y);
matrix.ScaleAt(e.ScaleDelta, e.ScaleDelta, transformCenter.X,
transformCenter.Y);
}
 
 
targetImage.RenderTransform =
 
}
{
}Manipulation Processor Event
HandlersvoidmanipulationProcessor_Affine2DManipulationStarted(objectsender,
Affine2DOperationStartedEventArgse)voidmanipulationProcessor_Affine2DManipulationDelta(objectsender,
Affine2DOperationDeltaEventArgse)privatevoidProcessManipulationInertiaDelta(Affine2DOperationDeltaEventArgse)RectcontainerRect
t = newRect(this.RenderSize);UIElementcontent = this.targetImage
asUIElement;Matrixmatrix = newMatrix();MatrixTransformtransformMatrix =
targetImage.RenderTransform asMatrixTransform;if(transformMatrix !=
null)if(this.targetImage isFrameworkElement)FrameworkElementframeworkElement =
this.targetImage asFrameworkElement;PointtransformCenter =
this.TranslatePoint(e.ManipulationOrigin,
frameworkElement);newMatrixTransform(matrix);voidmanipulationProcessor_Affine2DManipulationCompleted(objectsender,
Affine2DOperationCompletedEventArgse)#endregion
#region
{
}
{
position.Y < 0 ||
position.X > targetImage.Width ||
position.Y > targetImage.Height)
{UI Event HandlersprivatevoidtargetImage_PreviewContactDown(objectsender,
ContactEventArgse)privatevoidtargetImage_PreviewContactChanged(objectsender,
ContactEventArgse)if(!e.Contact.IsFingerRecognized)return;Pointposition =
e.Contact.GetPosition(this);if(position.X < 0 ||//
e.Contact.Capture(targetImage,
System.Windows.Input.CaptureMode.None);e.Contact.Capture(
 
downContacts.Remove(e.Contact);
}this, CaptureMode.None);if(downContacts.Contains(e.Contact))else{//
e.Contact.Capture(targetImage,
System.Windows.Input.CaptureMode.SubTree);e.Contact.Capture(
manipulationProcessor.BeginTrack(e.Contact);
e.Handled =
downContacts.Add(e.Contact);
 
}
}
{this,
CaptureMode.SubTree); true;if(!downContacts.Contains(e.Contact))privatevoidtargetImage_PreviewContactUp(objectsender,
ContactEventArgse)if(!e.Contact.IsFingerRecognized)return;//e.Contact.Capture(targetImage,
, System.Windows.Input.CaptureMode.None);e.Contact.Capture(
downContacts.Remove(e.Contact);
}
 this, CaptureMode.None);#endregion
 }
}
 
 
 <s:SurfaceWindowx:Class="teste2.SurfaceWindow1"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:s="http://schemas.microsoft.com/surface/2008"xmlns:l="clr-namespace:teste2"Title="teste2"><s:SurfaceWindow.Resources><ImageBrushx:Key="WindowBackground"Stretch="None"Opacity="0.6"ImageSource="pack://application:,,,/Resources/WindowBackground.jpg"/></s:SurfaceWindow.Resources><GridBackground="{StaticResourceWindowBackground}"Name="tt"
><ViewboxName="targetImage"Width="1024"Height="798"MinWidth="1024"MinHeight="798"><l:testcontrolWidth="1024
4
"Height="798"MinHeight="798"MinWidth="1024"></l:testcontrol></Viewbox></</Grid>s:SurfaceWindow>

推荐答案

我显然没有编译你上面粘贴的代码，但是在ManipulationDelta事件处理程序上：如果你达到你的最小宽度就不要做任何事情/身高。

I obviously did not compile the code you pasted above, but on the ManipulationDelta event handler: just don't do anything if you hit your min width / height.

谢谢！

-Luis Cabrera

-Luis Cabrera

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