#558 – Reversing a Gradient Using Blend

May 15, 2012 1 Comment

When defining a gradient fill in Blend, the Offset property of each gradient stop indicates the location of the gradient stop along the gradient line, from StartPoint to EndPoint.

In the example below, the gradient runs from white at the top of the control to blue at the bottom.

		<Button Content="Gradient Fill" HorizontalAlignment="Center"
		        Padding="15,10" Margin="20">
			<Button.Background>
				<LinearGradientBrush StartPoint="0,0" EndPoint="0,1" >
					<GradientStop Color="White" Offset="0"/>
					<GradientStop Color="Pink" Offset="0.75"/>
					<GradientStop Color="Blue" Offset="1"/>
				</LinearGradientBrush>
			</Button.Background>
		</Button>


You can easily reverse the order of the gradient stops by clicking on a button in Blend. The button is located on the color editing panel.

If we reverse the gradient stops for the example above, the offsets are reversed and the gradient flips upside down.

		<Button Content="Gradient Fill" HorizontalAlignment="Center"
		        Padding="15,10" Margin="20">
			<Button.Background>
				<LinearGradientBrush StartPoint="0,0" EndPoint="0,1" >
					<GradientStop Color="White" Offset="1"/>
					<GradientStop Color="Pink" Offset="0.25"/>
					<GradientStop Color="Blue"/>
				</LinearGradientBrush>
			</Button.Background>
		</Button>

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#216 – Defining Several Different Gradient Stops in a Gradient Fill

February 13, 2011 3 Comments

When defining a gradient fill, you can include a number of different gradient stops.  For each stop, you define the color that the gradient should be at that stop (set Color property), and the location of the stop along the gradient line, from 0.0 to 1.0 (Offset property).

Here’s an example of a left-to-right gradient that has five different stops:

		<Button Content="5 stops - Red, Green, Orange, Blue, Pink" Height="200" Width="300">
			<Button.Background>
				<LinearGradientBrush StartPoint="0,0.5" EndPoint="1,0.5">
					<GradientStop Color="Red" Offset="0.0"/>
					<GradientStop Color="Green" Offset="0.2"/>
					<GradientStop Color="Orange" Offset="0.5"/>
					<GradientStop Color="Blue" Offset="0.9"/>
					<GradientStop Color="Pink" Offset="1.0"/>
				</LinearGradientBrush>
			</Button.Background>
		</Button>


Here’s a gradient brush that defines the seven colors of the rainbow.

                <LinearGradientBrush StartPoint="0,0.5" EndPoint="1,0.5">
                    <GradientStop Color="Red" Offset="0.0"/>
                    <GradientStop Color="Orange" Offset="0.17"/>
                    <GradientStop Color="Yellow" Offset="0.33"/>
                    <GradientStop Color="Green" Offset="0.5"/>
                    <GradientStop Color="Blue" Offset="0.67"/>
                    <GradientStop Color="Indigo" Offset="0.83"/>
                    <GradientStop Color="Violet" Offset="1.0"/>
                </LinearGradientBrush>

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