Опубликован: 23.01.2009 | Доступ: свободный | Студентов: 1530 / 146 | Оценка: 4.33 / 4.22 | Длительность: 13:08:00
Специальности: Программист
Лекция 7:

Анимация в XAML-графике

Таблица 7.3. Анимация DoubleAnimation
Код Вид в браузере
7.3.1
<Canvas
xmlns="http://schemas.microsoft.com/
client/2007"
xmlns:x="http://schemas.microsoft.com/
winfx/2006/xaml"
Width="200" Height="100"
Background="White"
x:Name="Page">
  
<Rectangle Canvas.Left ="5" 
Canvas.Top="5" Width="190" 
Height="90" Stroke="green" 
StrokeThickness="2" Fill="
Transparent" />

<Rectangle Canvas.Top="40" 
Width="20" Height="20" 
Fill="red" x:Name="myRectangle">
<Rectangle.Triggers> 
    <EventTrigger RoutedEvent="Rectangle
.Loaded"> 
  <BeginStoryboard> 
    <Storyboard> 
      <DoubleAnimation RepeatBehavior=
      "Forever"               
        Storyboard.TargetName="my
        Rectangle" 
        Storyboard.TargetProperty="
        (Canvas.Left)" 
        From="0" To="200" 
Duration="0:0:01" 
        AutoReverse="True" /> 
    </Storyboard> 
  </BeginStoryboard> 
 </EventTrigger> 
</Rectangle.Triggers> 
</Rectangle>  

</Canvas>

Описание
Изменение абсциссы прямоугольника. Значение "Canvas.Left" атрибута Storyboard.TargetProperty было взято в скобки, поскольку оно состоит из двух слов. Анимация будет воспроизводиться бесконечно ( RepeatBehavior="Forever" ), а прямоугольник будет курсировать от одной точки к другой и обратно ( AutoReverse="True" ).
Код Вид в браузере
7.3.2
<Canvas
xmlns="http://schemas.microsoft.com/
client/2007"
xmlns:x="http://schemas.microsoft.com/
winfx/2006/xaml"
Width="200" Height="100"
Background="White"
x:Name="Page">
  
<Rectangle Canvas.Left ="5" 
Canvas.Top="5" Width="190" 
Height="90" Stroke="green" 
StrokeThickness="2" 
Fill="Transparent" />

<Rectangle Canvas.Top="40"
 Width="20" Height="20" 
Fill="red" x:Name="myRectangle">
<Rectangle.Triggers> 
 <EventTrigger RoutedEvent="
 Rectangle.Loaded"> 
  <BeginStoryboard> 
   <Storyboard> 
    <DoubleAnimation RepeatBehavior="3x"               
      Storyboard.TargetName="myRectangle" 
      Storyboard.TargetProperty="
     (Canvas.Left)" 
    From="0" To="200" 
Duration="0:0:01" 
       AutoReverse="True" /> 
   </Storyboard> 
    </BeginStoryboard> 
  </EventTrigger> 
 </Rectangle.Triggers> 
</Rectangle>  

</Canvas>

Описание
Трехкратное повторение анимации за счет свойства RepeatBehavior="3x".
Код Вид в браузере
7.3.3
<Canvas
xmlns="http://schemas.microsoft.com/
client/2007"
xmlns:x="http://schemas.microsoft.com/
winfx/2006/xaml"
Width="200" Height="100"
Background="White"
x:Name="Page">
  
<Rectangle Canvas.Left ="5" 
Canvas.Top="5" Width="190" 
Height="90" Stroke="green" 
StrokeThickness="2" 
Fill="Transparent" />

<Rectangle Canvas.Left ="90"
 Canvas.Top="40" Width="20" 
Height="20" Fill="red"
 x:Name="myRectangle">
<Rectangle.Triggers> 
  <EventTrigger RoutedEvent="
  Rectangle.Loaded"> 
  <BeginStoryboard> 
   <Storyboard> 
    <DoubleAnimation RepeatBehavior=
    "Forever"               
     Storyboard.TargetName="myRectangle" 
     Storyboard.TargetProperty="
    (Canvas.Top)" 
    From="0" To="100" 
Duration="0:0:05" 
      AutoReverse="True" /> 
    </Storyboard> 
  </BeginStoryboard> 
 </EventTrigger> 
</Rectangle.Triggers> 
</Rectangle>  

</Canvas>

Описание
Изменение ординаты прямоугольника
Код Вид в браузере
7.3.4
<Canvas
xmlns="http://schemas.microsoft.com/
client/2007"
xmlns:x="http://schemas.microsoft.com/
winfx/2006/xaml"
Width="200" Height="100"
Background="White"
x:Name="Page">
  
<Rectangle Canvas.Left ="5" 
Canvas.Top="5" Width="190" 
Height="90" Stroke="green" 
StrokeThickness="2" 
Fill="Transparent" />

<Rectangle Canvas.Left ="0" 
Canvas.Top="40" Width="20"
 Height="20" Fill="red"
 x:Name="myRectangle">
<Rectangle.Triggers> 
 <EventTrigger RoutedEvent=
 "Rectangle.Loaded"> 
  <BeginStoryboard> 
   <Storyboard> 
    <DoubleAnimation RepeatBehavior=
    "Forever"               
    Storyboard.TargetName="
    myRectangle" 
   Storyboard.TargetProperty="
  (Canvas.Top)" 
   From="0" To="100" 
Duration="0:0:05" 
  AutoReverse="True" /> 
  <DoubleAnimation 
  RepeatBehavior="3x"               
  Storyboard.TargetName=
  "myRectangle" 
  Storyboard.TargetProperty=
  "(Canvas.Left)" 
  From="0" To="200" 
Duration="0:0:05" 
    AutoReverse="True" /> 
   </Storyboard> 
  </BeginStoryboard> 
 </EventTrigger> 
</Rectangle.Triggers> 
</Rectangle>  

</Canvas>

Описание
Одновременное увеличение абсциссы и ординаты, в результате чего прямоугольник будет двигаться по диагонали
Код Вид в браузере
7.3.5
<Canvas
xmlns="http://schemas.microsoft.com/
client/2007"
xmlns:x="http://schemas.microsoft.com/
winfx/2006/xaml"
Width="200" Height="100"
Background="White"
x:Name="Page">
  
<Rectangle Canvas.Left ="5" 
Canvas.Top="5" Width="190" 
Height="90" Stroke="green" 
StrokeThickness="2" 
Fill="Transparent" />

<Rectangle Canvas.Left ="5" 
Canvas.Top="5" Width="20" 
Height="20" Fill="red" 
x:Name="myRectangle">
<Rectangle.Triggers> 
  <EventTrigger RoutedEvent="
Rectangle.Loaded"> 
  <BeginStoryboard> 
   <Storyboard> 
    <DoubleAnimation 
    RepeatBehavior="Forever"               
    Storyboard.TargetName=
     "myRectangle" 
     Storyboard.TargetProperty=
    "(Width)" 
    From="0" To="195" 
Duration="0:0:05" 
   AutoReverse="True" /> 
   <DoubleAnimation RepeatBehavior=
   "3x"               
   Storyboard.TargetName=
   "myRectangle" 
   Storyboard.TargetProperty=
   "(Height)" 
   From="0" 
   To="95" 
Duration="0:0:05" 
     AutoReverse="True" /> 
    </Storyboard> 
   </BeginStoryboard> 
  </EventTrigger> 
 </Rectangle.Triggers> 
</Rectangle>  

</Canvas>

Описание
Одновременное увеличение ширины и высоты прямоугольника
Код Вид в браузере
7.3.6
<Canvas
xmlns="http://schemas.microsoft.com/
client/2007"
xmlns:x="http://schemas.microsoft.com/
winfx/2006/xaml"
Width="200" Height="100"
Background="White"
x:Name="Page">
  
<Rectangle Canvas.Left ="5" 
Canvas.Top="5" Width="190" 
Height="90" Stroke="green" 
StrokeThickness="2" 
Fill="Transparent" />

<Rectangle Canvas.Left ="10" 
Canvas.Top="10" Width="180" 
Height="80" Fill="red"
 x:Name="myRectangle">
<Rectangle.Triggers> 
    <EventTrigger RoutedEvent="Rectangle.
Loaded"> 
 <BeginStoryboard> 
  <Storyboard>
   <DoubleAnimation RepeatBehavior=
   "Forever"
    Storyboard.TargetName=
    "myRectangle"
    Storyboard.TargetProperty=
    "(Rectangle.Opacity)" 
    From="1" To="0" 
Duration="0:0:5" 
AutoReverse="True"  /> 
    </Storyboard>
   </BeginStoryboard> 
  </EventTrigger> 
 </Rectangle.Triggers> 
</Rectangle>  

</Canvas>

Описание
Изменение прозрачности фигуры
Код Вид в браузере
7.3.7
<Canvas
xmlns="http://schemas.microsoft.com/
client/2007"
xmlns:x="http://schemas.microsoft.com/
winfx/2006/xaml"
Width="150" Height="150"
Background="White"
x:Name="Page">

<Rectangle Width="150" 
Height="150" 
x:Name="myRectangle">
 <Rectangle.Fill>
  <LinearGradientBrush 
  StartPoint="0,0" 
EndPoint="0,1" x:Name="myLinear
GradientBrush">
  <GradientStop Color="red" 
Offset="-1" x:Name=
"myGradientStop" />
 <GradientStop Color=
 "yellow" 
Offset="1" />
  </LinearGradientBrush>
 </Rectangle.Fill>
  
<Rectangle.Triggers> 
 <EventTrigger RoutedEvent="Rectangle.
 Loaded"> 
  <BeginStoryboard> 
   <Storyboard>
    <DoubleAnimation RepeatBehavior=
    "Forever"
    Storyboard.TargetName=
      "myGradientStop"
       Storyboard.TargetProperty=
      "Offset" 
     From="-1" To="1" 
    Duration="0:0:5" 
     AutoReverse="True"  /> 
     </Storyboard>
    </BeginStoryboard> 
  </EventTrigger> 
 </Rectangle.Triggers> 

</Rectangle>
</Canvas>

Описание
Изменение границы распространения линейного градиента
Код Вид в браузере
7.3.8
<Canvas
xmlns="http://schemas.microsoft.com/
client/2007"
xmlns:x="http://schemas.microsoft.com/
winfx/2006/xaml"
Width="150" Height="150"
Background="White"
x:Name="Page">

 <Ellipse Width="150"
 Height="150" >
   <Ellipse.Fill>
    <RadialGradientBrush>
<GradientStop Color="Red" 
Offset="0" x:Name=
"myGradientStop" />
 <GradientStop Color="Yellow" 
Offset="1" />  
 </RadialGradientBrush>
  </Ellipse.Fill>
      
  <Ellipse.Triggers> 
  <EventTrigger RoutedEvent="Rectangle.
Loaded"> 
 <BeginStoryboard> 
  <Storyboard>
   <DoubleAnimation RepeatBehavior="
Forever"
    Storyboard.TargetName="
myGradientStop"
     Storyboard.TargetProperty="Offset" 
     From="-1" To="1"
 Duration="0:0:5" AutoReverse=
 "True"  /> 
      </Storyboard>
   </BeginStoryboard> 
 </EventTrigger> 
</Ellipse.Triggers> 
    </Ellipse>
</Canvas>

Описание
Изменение границы распространения радиального градиента
Код Вид в браузере
7.3.9
<Canvas
xmlns="http://schemas.microsoft.com/
client/2007"
xmlns:x="http://schemas.microsoft.com/
winfx/2006/xaml"
Width="150" Height="150"
Background="White"
x:Name="Page">

<Ellipse Width = "140" 
Height="140" 
Canvas.Left = "5" 
Canvas.Top="5" Stroke="Red" 
StrokeThickness="5"  
x:Name="myEllipse" >
      
   <Ellipse.Triggers> 
  <EventTrigger RoutedEvent="Rectangle.
Loaded"> 
 <BeginStoryboard> 
  <Storyboard>
   <DoubleAnimation RepeatBehavior="
Forever"
 Storyboard.TargetName="myEllipse"
 Storyboard.TargetProperty=
 "StrokeThickness" 
 From="5" To="50"
 Duration="0:0:5" 
 AutoReverse="True"  /> 
   </Storyboard>
  </BeginStoryboard> 
 </EventTrigger> 
</Ellipse.Triggers> 
  </Ellipse>
</Canvas>

Описание
Изменение ширины контура фигуры
Код Описание
7.3.10
<Canvas
xmlns="http://schemas.microsoft.com/
client/2007"
xmlns:x="http://schemas.microsoft.com/
winfx/2006/xaml"
Width="400" Height="70"
Background="White"
x:Name="Page">
  
  <TextBlock
x:Name="myText"
  FontFamily="Verdana"
  FontSize="32"
  FontWeight="Bold"
  Foreground="Red">
  XAML-графика
  
  <TextBlock.Triggers>
 <EventTrigger RoutedEvent="Rectangle.
Loaded"> 
 <BeginStoryboard> 
  <Storyboard>
   <DoubleAnimation RepeatBehavior=
    "Forever"
     Storyboard.TargetName=
     "myText"
     Storyboard.TargetProperty=
     "FontSize" 
     To="50"  Duration=
     "0:0:5" 
AutoReverse="True"  /> 
    </Storyboard>
  </BeginStoryboard> 
 </EventTrigger> 
  </TextBlock.Triggers>
</TextBlock>

</Canvas>
Изменение размера шрифта текста
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Рис. .