Creating a custom button in XAML
The XAML language has a Button element, but for a Web application you could create your own custom version.
You could also makes use of the <input type="button"> element of HTML, but in this case the application will work only with a browser. To have buttons common to Web applications and desktop software, you have to create yours.
Drawing the shape
One takes again the code of the rectangle with the rounded corners:
<Rectangle Canvas.Top="4" Canvas.Left="4" Height="20" Width="80" Fill="LightGray" Stroke="Black" StrokeThickness="1" RadiusX="4" RadiusY="4" />
One obtains the shape of the button below:
To embellish the button it is necessary to remove the color property and to open tag for a more elaborate design. When one thus transforms the property into tag, the color can be given with the SolidColorBrush tag:
<Rectangle.Fill> <SolidColorBrush Color="LightGray" /> </Rectangle.Fill>
The image remains the same one:
Now shaded colors are added with gradients, clear in top left corner, dark to the opposite corner:
<Rectangle.Fill> <LinearGradientBrush > <GradientStop Color="White" Offset="0.0" /> <GradientStop Color="LightGray" Offset="0.20" /> <GradientStop Color="Gray" Offset="0.9" /> <GradientStop Color="LightGray" Offset="0.20" /> </LinearGradientBrush> </Rectangle.Fill>
Adding a text
To add a text, which cannot be made inside a rectangle, one creates an inner Canvas and it is inside this Canvas where one will align the Rectangle and TextBlock.
<Canvas> <Canvas> <Rectangle Canvas.Top="4" Canvas.Left="4" > </Rectangle> <TextBlock Canvas.Left="14" Canvas.Top="6"> Click </TextBlock> </Canvas> </Canvas>
The button equipped now with a label:
Defining an interaction
are associated to the Canvas of our button.
When the mouse:
- is on the button (MouseEnter), a black edge appears,
- and it disappears when it leaves the surface (MouseLeave).
- When one clicks on the button (MouseLeftButtonDown), the button is shifted on the screen, some action is performed, a message is displayed in our example, then the button retrieves its normal aspect.
- When the mouse button is released (MouseLeftButtonUp), or after the execution of the action, the button takes again the normal position.
<Canvas MouseLeftButtonDown="buttonDown" MouseLeftButtonUp="buttonUp" MouseEnter="buttonEnter" MouseLeave="buttonLeave" >
To shift the button on the page and to simulate a pressed button, the Canvas
of the button, which contains both the rectangle and the text, is shifted.
For that, it will be necessary for us to use a new property, RenderTransform, which makes it possible to perform various transformations on an object, but all that interests us here, it is the translation of co-ordinates.
<Canvas.RenderTransform> <TransformGroup> <TranslateTransform x:Name="addoffset" X="0" Y="0"/> </TransformGroup> </Canvas.RenderTransform>
You can click on the button below:
Full source code