/// <summary>
/// Tries to match a
/// <see cref="MediaDeviceDescription"/>.
/// </summary>
/// <param name="deviceDescription">the device description</param>
/// <returns>true, if successful</returns>
public virtual bool Matches(MediaDeviceDescription deviceDescription)
{
switch (feature)
{
case MediaFeature.COLOR: {
int?val = CssUtils.ParseInteger(value);
if (minPrefix)
{
return(val != null && deviceDescription.GetBitsPerComponent() >= val);
}
else
{
if (maxPrefix)
{
return(val != null && deviceDescription.GetBitsPerComponent() <= val);
}
else
{
return(val == null?deviceDescription.GetBitsPerComponent() != 0 : val == deviceDescription.GetBitsPerComponent
());
}
}
goto case MediaFeature.COLOR_INDEX;
}
case MediaFeature.COLOR_INDEX: {
int?val = CssUtils.ParseInteger(value);
if (minPrefix)
{
return(val != null && deviceDescription.GetColorIndex() >= val);
}
else
{
if (maxPrefix)
{
return(val != null && deviceDescription.GetColorIndex() <= val);
}
else
{
return(val == null?deviceDescription.GetColorIndex() != 0 : val == deviceDescription.GetColorIndex());
}
}
goto case MediaFeature.ASPECT_RATIO;
}
case MediaFeature.ASPECT_RATIO: {
int[] aspectRatio = CssUtils.ParseAspectRatio(value);
if (minPrefix)
{
return(aspectRatio != null && aspectRatio[0] * deviceDescription.GetHeight() >= aspectRatio[1] * deviceDescription
.GetWidth());
}
else
{
if (maxPrefix)
{
return(aspectRatio != null && aspectRatio[0] * deviceDescription.GetHeight() <= aspectRatio[1] * deviceDescription
.GetWidth());
}
else
{
return(aspectRatio != null && CssUtils.CompareFloats(aspectRatio[0] * deviceDescription.GetHeight(), aspectRatio
[1] * deviceDescription.GetWidth()));
}
}
goto case MediaFeature.GRID;
}
case MediaFeature.GRID: {
int?val = CssUtils.ParseInteger(value);
return(val != null && val == 0 && !deviceDescription.IsGrid() || deviceDescription.IsGrid());
}
case MediaFeature.SCAN: {
return(Object.Equals(value, deviceDescription.GetScan()));
}
case MediaFeature.ORIENTATION: {
return(Object.Equals(value, deviceDescription.GetOrientation()));
}
case MediaFeature.MONOCHROME: {
int?val = CssUtils.ParseInteger(value);
if (minPrefix)
{
return(val != null && deviceDescription.GetMonochrome() >= val);
}
else
{
if (maxPrefix)
{
return(val != null && deviceDescription.GetMonochrome() <= val);
}
else
{
return(val == null?deviceDescription.GetMonochrome() > 0 : val == deviceDescription.GetMonochrome());
}
}
goto case MediaFeature.HEIGHT;
}
case MediaFeature.HEIGHT: {
float val = ParseAbsoluteLength(value);
if (minPrefix)
{
return(deviceDescription.GetHeight() >= val);
}
else
{
if (maxPrefix)
{
return(deviceDescription.GetHeight() <= val);
}
else
{
return(deviceDescription.GetHeight() > 0);
}
}
goto case MediaFeature.WIDTH;
}
case MediaFeature.WIDTH: {
float val = ParseAbsoluteLength(value);
if (minPrefix)
{
return(deviceDescription.GetWidth() >= val);
}
else
{
if (maxPrefix)
{
return(deviceDescription.GetWidth() <= val);
}
else
{
return(deviceDescription.GetWidth() > 0);
}
}
goto case MediaFeature.RESOLUTION;
}
case MediaFeature.RESOLUTION: {
float val = CssUtils.ParseResolution(value);
if (minPrefix)
{
return(deviceDescription.GetResolution() >= val);
}
else
{
if (maxPrefix)
{
return(deviceDescription.GetResolution() <= val);
}
else
{
return(deviceDescription.GetResolution() > 0);
}
}
goto default;
}
default: {
return(false);
}
}
}
