bool update_media_lists(media_features features)
{
var update_styles = false;
foreach (var iter in _media_lists)
{
if (iter.apply_media_features(features))
{
update_styles = true;
}
}
return(update_styles);
}
public bool apply_media_features(media_features features) // returns true if the _is_used changed
{
var apply = false;
foreach (var iter in _queries)
{
if (iter.check(features))
{
apply = true;
break;
}
}
var ret = apply != _is_used;
_is_used = apply;
return(ret);
}
public bool check(media_features features)
{
var res = false;
if (_media_type == media_type.all || _media_type == features.type)
{
res = true;
foreach (var expr in _expressions)
{
if (!expr.check(features))
{
res = false;
break;
}
}
}
if (_not)
{
res = !res;
}
return(res);
}
public void get_media_features(media_features media)
{
}
public void MediaQueryCheckTest()
{
media_query_expression e;
media_features k;
e = new media_query_expression {
feature = media_feature.width, val = 100
};
k = new media_features {
width = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
width = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
width = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_width, val = 100
};
k = new media_features {
width = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
width = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
width = 500
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_width, val = 100
};
k = new media_features {
width = 0
}; Assert.IsTrue(e.check(k));
k = new media_features {
width = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
width = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.height, val = 100
};
k = new media_features {
height = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
height = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_height, val = 100
};
k = new media_features {
height = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
height = 500
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_height, val = 100
};
k = new media_features {
height = 0
}; Assert.IsTrue(e.check(k));
k = new media_features {
height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
height = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.depth, val = 100
};
k = new media_features {
depth = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
depth = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
depth = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_depth, val = 100
};
k = new media_features {
depth = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
depth = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
depth = 500
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_depth, val = 100
};
k = new media_features {
depth = 0
}; Assert.IsTrue(e.check(k));
k = new media_features {
depth = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
depth = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.device_width, val = 100
};
k = new media_features {
device_width = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
device_width = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_width = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_device_width, val = 100
};
k = new media_features {
device_width = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
device_width = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_width = 500
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_device_width, val = 100
};
k = new media_features {
device_width = 0
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_width = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_width = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.device_height, val = 100
};
k = new media_features {
device_height = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
device_height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_height = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_device_height, val = 100
};
k = new media_features {
device_height = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
device_height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_height = 500
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_device_height, val = 100
};
k = new media_features {
device_height = 0
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_height = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.device_depth, val = 100
};
k = new media_features {
device_depth = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
device_depth = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_depth = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_device_depth, val = 100
};
k = new media_features {
device_depth = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
device_depth = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_depth = 500
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_device_depth, val = 100
};
k = new media_features {
device_depth = 0
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_depth = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_depth = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.orientation, val = (int)media_orientation.portrait
};
k = new media_features {
width = 0, height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
width = 100, height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
width = 500, height = 100
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.orientation, val = (int)media_orientation.landscape
};
k = new media_features {
width = 0, height = 100
}; Assert.IsFalse(e.check(k));
k = new media_features {
width = 100, height = 100
}; Assert.IsFalse(e.check(k));
k = new media_features {
width = 500, height = 100
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.aspect_ratio, val = 100, val2 = 100
};
k = new media_features {
width = 0, height = 100
}; Assert.IsFalse(e.check(k));
k = new media_features {
width = 100, height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
width = 500, height = 100
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_aspect_ratio, val = 100, val2 = 100
};
k = new media_features {
width = 0, height = 100
}; Assert.IsFalse(e.check(k));
k = new media_features {
width = 100, height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
width = 500, height = 100
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_aspect_ratio, val = 100, val2 = 100
};
k = new media_features {
width = 0, height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
width = 100, height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
width = 500, height = 100
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.device_aspect_ratio, val = 100, val2 = 100
};
k = new media_features {
device_width = 0, device_height = 100
}; Assert.IsFalse(e.check(k));
k = new media_features {
device_width = 100, device_height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_width = 500, device_height = 100
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_device_aspect_ratio, val = 100, val2 = 100
};
k = new media_features {
device_width = 0, device_height = 100
}; Assert.IsFalse(e.check(k));
k = new media_features {
device_width = 100, device_height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_width = 500, device_height = 100
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_device_aspect_ratio, val = 100, val2 = 100
};
k = new media_features {
device_width = 0, device_height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_width = 100, device_height = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
device_width = 500, device_height = 100
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.color, val = 100
};
k = new media_features {
color = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
color = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
color = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_color, val = 100
};
k = new media_features {
color = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
color = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
color = 500
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_color, val = 100
};
k = new media_features {
color = 0
}; Assert.IsTrue(e.check(k));
k = new media_features {
color = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
color = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.color_index, val = 100
};
k = new media_features {
color_index = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
color_index = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
color_index = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_color_index, val = 100
};
k = new media_features {
color_index = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
color_index = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
color_index = 500
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_color_index, val = 100
};
k = new media_features {
color_index = 0
}; Assert.IsTrue(e.check(k));
k = new media_features {
color_index = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
color_index = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.monochrome, val = 100
};
k = new media_features {
monochrome = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
monochrome = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
monochrome = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_monochrome, val = 100
};
k = new media_features {
monochrome = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
monochrome = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
monochrome = 500
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_monochrome, val = 100
};
k = new media_features {
monochrome = 0
}; Assert.IsTrue(e.check(k));
k = new media_features {
monochrome = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
monochrome = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.resolution, val = 100
};
k = new media_features {
resolution = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
resolution = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
resolution = 500
}; Assert.IsFalse(e.check(k));
e = new media_query_expression {
feature = media_feature.min_resolution, val = 100
};
k = new media_features {
resolution = 0
}; Assert.IsFalse(e.check(k));
k = new media_features {
resolution = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
resolution = 500
}; Assert.IsTrue(e.check(k));
e = new media_query_expression {
feature = media_feature.max_resolution, val = 100
};
k = new media_features {
resolution = 0
}; Assert.IsTrue(e.check(k));
k = new media_features {
resolution = 100
}; Assert.IsTrue(e.check(k));
k = new media_features {
resolution = 500
}; Assert.IsFalse(e.check(k));
}
public bool check(media_features features)
{
switch (feature)
{
case media_feature.width:
if (check_as_bool)
{
return(features.width != 0);
}
else if (features.width == val)
{
return(true);
}
break;
case media_feature.min_width:
if (features.width >= val)
{
return(true);
}
break;
case media_feature.max_width:
if (features.width <= val)
{
return(true);
}
break;
case media_feature.height:
if (check_as_bool)
{
return(features.height != 0);
}
else if (features.height == val)
{
return(true);
}
break;
case media_feature.min_height:
if (features.height >= val)
{
return(true);
}
break;
case media_feature.max_height:
if (features.height <= val)
{
return(true);
}
break;
case media_feature.depth:
if (check_as_bool)
{
return(features.depth != 0);
}
else if (features.depth == val)
{
return(true);
}
break;
case media_feature.min_depth:
if (features.depth >= val)
{
return(true);
}
break;
case media_feature.max_depth:
if (features.depth <= val)
{
return(true);
}
break;
case media_feature.device_width:
if (check_as_bool)
{
return(features.device_width != 0);
}
else if (features.device_width == val)
{
return(true);
}
break;
case media_feature.min_device_width:
if (features.device_width >= val)
{
return(true);
}
break;
case media_feature.max_device_width:
if (features.device_width <= val)
{
return(true);
}
break;
case media_feature.device_height:
if (check_as_bool)
{
return(features.device_height != 0);
}
else if (features.device_height == val)
{
return(true);
}
break;
case media_feature.min_device_height:
if (features.device_height >= val)
{
return(true);
}
break;
case media_feature.max_device_height:
if (features.device_height <= val)
{
return(true);
}
break;
case media_feature.device_depth:
if (check_as_bool)
{
return(features.device_depth != 0);
}
else if (features.device_depth == val)
{
return(true);
}
break;
case media_feature.min_device_depth:
if (features.device_depth >= val)
{
return(true);
}
break;
case media_feature.max_device_depth:
if (features.device_depth <= val)
{
return(true);
}
break;
case media_feature.orientation:
if (features.height >= features.width)
{
if ((media_orientation)val == media_orientation.portrait)
{
return(true);
}
}
else
{
if ((media_orientation)val == media_orientation.landscape)
{
return(true);
}
}
break;
case media_feature.aspect_ratio:
if (features.height != 0 && val2 != 0)
{
var ratio_this = (int)Math.Round(val / (double)val2 * 100);
var ratio_feat = (int)Math.Round(features.width / (double)features.height * 100.0);
if (ratio_this == ratio_feat)
{
return(true);
}
}
break;
case media_feature.min_aspect_ratio:
if (features.height != 0 && val2 != 0)
{
var ratio_this = (int)Math.Round(val / (double)val2 * 100);
var ratio_feat = (int)Math.Round(features.width / (double)features.height * 100.0);
if (ratio_feat >= ratio_this)
{
return(true);
}
}
break;
case media_feature.max_aspect_ratio:
if (features.height != 0 && val2 != 0)
{
var ratio_this = (int)Math.Round(val / (double)val2 * 100);
var ratio_feat = (int)Math.Round(features.width / (double)features.height * 100.0);
if (ratio_feat <= ratio_this)
{
return(true);
}
}
break;
case media_feature.device_aspect_ratio:
if (features.device_height != 0 && val2 != 0)
{
var ratio_this = (int)Math.Round(val / (double)val2 * 100);
var ratio_feat = (int)Math.Round(features.device_width / (double)features.device_height * 100.0);
if (ratio_feat == ratio_this)
{
return(true);
}
}
break;
case media_feature.min_device_aspect_ratio:
if (features.device_height != 0 && val2 != 0)
{
var ratio_this = (int)Math.Round(val / (double)val2 * 100);
var ratio_feat = (int)Math.Round(features.device_width / (double)features.device_height * 100.0);
if (ratio_feat >= ratio_this)
{
return(true);
}
}
break;
case media_feature.max_device_aspect_ratio:
if (features.device_height != 0 && val2 != 0)
{
var ratio_this = (int)Math.Round(val / (double)val2 * 100);
var ratio_feat = (int)Math.Round(features.device_width / (double)features.device_height * 100.0);
if (ratio_feat <= ratio_this)
{
return(true);
}
}
break;
case media_feature.color:
if (check_as_bool)
{
return(features.color != 0);
}
else if (features.color == val)
{
return(true);
}
break;
case media_feature.min_color:
if (features.color >= val)
{
return(true);
}
break;
case media_feature.max_color:
if (features.color <= val)
{
return(true);
}
break;
case media_feature.color_index:
if (check_as_bool)
{
return(features.color_index != 0);
}
else if (features.color_index == val)
{
return(true);
}
break;
case media_feature.min_color_index:
if (features.color_index >= val)
{
return(true);
}
break;
case media_feature.max_color_index:
if (features.color_index <= val)
{
return(true);
}
break;
case media_feature.monochrome:
if (check_as_bool)
{
return(features.monochrome != 0);
}
else if (features.monochrome == val)
{
return(true);
}
break;
case media_feature.min_monochrome:
if (features.monochrome >= val)
{
return(true);
}
break;
case media_feature.max_monochrome:
if (features.monochrome <= val)
{
return(true);
}
break;
case media_feature.resolution:
if (features.resolution == val)
{
return(true);
}
break;
case media_feature.min_resolution:
if (features.resolution >= val)
{
return(true);
}
break;
case media_feature.max_resolution:
if (features.resolution <= val)
{
return(true);
}
break;
default: return(false);
}
return(false);
}