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XPS OM Brushes

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This topic describes how to use different types of brushes in an XPS OM.

The brushes in the XPS OM are based on the IXpsOMBrush Interface and include the following:

Tile Brushes

Gradient Brushes

Code Examples

Create a solid-color brush

The following code example creates a solid-color brush from a color value that is defined in the code.

    HRESULT                hr = S_OK;

    XPS_COLOR              xpsColor;
    IXpsOMSolidColorBrush  *brush;

    // creates a solid red brush
    xpsColor.colorType = XPS_COLOR_TYPE_SRGB;
    xpsColor.value.sRGB.alpha = 0xFF;
    xpsColor.value.sRGB.red = 0xFF;
    xpsColor.value.sRGB.green = 0x00;
    xpsColor.value.sRGB.blue = 0x00;

    hr = xpsFactory->CreateSolidColorBrush(
       &xpsColor, 
       NULL, 
       reinterpret_cast<IXpsOMSolidColorBrush**>(&brush));
    
    // use brush

    // when finished with brush, release pointer
    brush->Release();

Create a visual brush

The following code example creates a brush from a visual object.

    HRESULT                       hr = S_OK;
    IXpsOMVisualBrush             *brush;

    XPS_RECT viewBoxRect = {0,0,0,0};
    XPS_RECT viewPortRect = {0,0,0,0};

    // set viewBoxRect to define the portion of the visual to use
    // as the brush.
    //
    // set viewPortRect to define the location and size of the 
    // the brush in the destination 
    //
    // create the brush
    hr = xpsFactory->CreateVisualBrush (
        &viewBoxRect,
        &viewPortRect,
        reinterpret_cast<IXpsOMVisualBrush**>(&brush));

    // assign the visual object
    //   brushVisual points to a visual
    //   that is defined outside of this example

    hr = brush->SetVisualLocal (brushVisual);
    
    // use brush
    
    // when finished with brush, release pointer
    brush->Release();

Create an image brush

Refer to the code example in Place Images in an XPS OM.

Create a linear-gradient brush

The following code example creates a linear-gradient brush. The gradient has two gradient stops.

    HRESULT                       hr = S_OK;
    XPS_COLOR                     xpsColorStop;
    IXpsOMGradientStop            *xpsGradientStop1, *xpsGradientStop2;
    IXpsOMLinearGradientBrush     *brush;
    XPS_POINT                     startPoint, endPoint;

    // define the start color
    xpsColorStop.colorType        = XPS_COLOR_TYPE_SRGB;
    xpsColorStop.value.sRGB.alpha = 0xFF;
    xpsColorStop.value.sRGB.red   = 0xE4;
    xpsColorStop.value.sRGB.green = 0x3B;
    xpsColorStop.value.sRGB.blue  = 0x2F;
    
    // create a gradient stop by setting the color and location 
    // for the beginning of the gradient
    hr = xpsFactory->CreateGradientStop(
        &xpsColorStop, 
        NULL, 
        0.0f,
        &xpsGradientStop1);
    startPoint.x = 375.75f;
    startPoint.y = 18.0f;

    // define the end color
    xpsColorStop.colorType        = XPS_COLOR_TYPE_SRGB;
    xpsColorStop.value.sRGB.alpha = 0xFF;
    xpsColorStop.value.sRGB.red   = 0xEF;
    xpsColorStop.value.sRGB.green = 0x79;
    xpsColorStop.value.sRGB.blue  = 0x2F;

    // create a gradient stop by setting the color and  location
    //  for the end of the gradient
    hr = xpsFactory->CreateGradientStop(
        &xpsColorStop,
        NULL, 
        1.0f, 
        &xpsGradientStop2);
    endPoint.x   = 375.75f;
    endPoint.y   = 134.6f;

    // create the brush
    hr = xpsFactory->CreateLinearGradientBrush(
        xpsGradientStop1, 
        xpsGradientStop2, 
        &startPoint, 
        &endPoint, 
        &brush);
    // release gradient stops after creating brush
    xpsGradientStop1->Release();
    xpsGradientStop2->Release();

    // when finished with brush, release pointer to brush
    brush->Release();

IXpsOMGradientBrush Interface

IXpsOMImageBrush Interface

IXpsOMLinearGradientBrush Interface

IXpsOMRadialGradientBrush Interface

IXpsOMSolidColorBrush Interface

IXpsOMTileBrush Interface

IXpsOMVisualBrush Interface

XPS_COLOR

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