| public static ResizeImage ( int imageW, int imageH, float imageScale, int w, int h, int maxW, int maxH ) : Size | ||
| imageW | int | |
| imageH | int | |
| imageScale | float | |
| w | int | |
| h | int | |
| maxW | int | |
| maxH | int | |
| return | Size | |
/// <summary>
/// Renders HTML for an image
/// </summary>
/// <param name="image">The image to render</param>
/// <param name="attributes">Additional parameters to add. Do not include alt or src</param>
/// <param name="outputHeightWidth">Indicates if the height and width attributes should be output when rendering the image</param>
/// <returns>An img HTML element</returns>
public virtual string RenderImage(
Image image,
SafeDictionary <string> attributes,
bool outputHeightWidth = false
)
{
if (image == null)
{
return(string.Empty);
}
if (attributes == null)
{
attributes = new SafeDictionary <string>();
}
var origionalKeys = attributes.Keys.ToList();
//should there be some warning about these removals?
AttributeCheck(attributes, ImageParameterKeys.CLASS, image.Class);
if (!attributes.ContainsKey(ImageParameterKeys.ALT))
{
attributes[ImageParameterKeys.ALT] = image.Alt;
}
AttributeCheck(attributes, ImageParameterKeys.BORDER, image.Border);
if (image.HSpace > 0)
{
AttributeCheck(attributes, ImageParameterKeys.HSPACE, image.HSpace.ToString(CultureInfo.InvariantCulture));
}
if (image.VSpace > 0)
{
AttributeCheck(attributes, ImageParameterKeys.VSPACE, image.VSpace.ToString(CultureInfo.InvariantCulture));
}
if (image.Width > 0)
{
AttributeCheck(attributes, ImageParameterKeys.WIDTHHTML, image.Width.ToString(CultureInfo.InvariantCulture));
}
if (image.Height > 0)
{
AttributeCheck(attributes, ImageParameterKeys.HEIGHTHTML, image.Height.ToString(CultureInfo.InvariantCulture));
}
var urlParams = new SafeDictionary <string>();
var htmlParams = new SafeDictionary <string>();
/*
* ME - This method is used to render images rather than going back to the fieldrender
* because it stops another call having to be passed to Sitecore.
*/
if (image == null || image.Src.IsNullOrWhiteSpace())
{
return(String.Empty);
}
if (attributes == null)
{
attributes = new SafeDictionary <string>();
}
Action <string> remove = key => attributes.Remove(key);
Action <string> url = key =>
{
urlParams.Add(key, attributes[key]);
remove(key);
};
Action <string> html = key =>
{
htmlParams.Add(key, attributes[key]);
remove(key);
};
Action <string> both = key =>
{
htmlParams.Add(key, attributes[key]);
urlParams.Add(key, attributes[key]);
remove(key);
};
var keys = attributes.Keys.ToList();
foreach (var key in keys)
{
//if we have not config we just add it to both
if (SitecoreContext.Config == null)
{
both(key);
}
else
{
bool found = false;
if (SitecoreContext.Config.ImageAttributes.Contains(key))
{
html(key);
found = true;
}
if (SitecoreContext.Config.ImageQueryString.Contains(key))
{
url(key);
found = true;
}
if (!found)
{
html(key);
}
}
}
//copy width and height across to url
if (!urlParams.ContainsKey(ImageParameterKeys.WIDTH) && !urlParams.ContainsKey(ImageParameterKeys.HEIGHT))
{
if (origionalKeys.Contains(ImageParameterKeys.WIDTHHTML))
{
urlParams[ImageParameterKeys.WIDTH] = htmlParams[ImageParameterKeys.WIDTHHTML];
}
if (origionalKeys.Contains(ImageParameterKeys.HEIGHTHTML))
{
urlParams[ImageParameterKeys.HEIGHT] = htmlParams[ImageParameterKeys.HEIGHTHTML];
}
}
if (!urlParams.ContainsKey(ImageParameterKeys.LANGUAGE) && image.Language != null)
{
urlParams[ImageParameterKeys.LANGUAGE] = image.Language.Name;
}
//calculate size
var finalSize = Utilities.ResizeImage(
image.Width,
image.Height,
urlParams[ImageParameterKeys.SCALE].ToFlaot(),
urlParams[ImageParameterKeys.WIDTH].ToInt(),
urlParams[ImageParameterKeys.HEIGHT].ToInt(),
urlParams[ImageParameterKeys.MAX_WIDTH].ToInt(),
urlParams[ImageParameterKeys.MAX_HEIGHT].ToInt());
if (finalSize.Height > 0)
{
urlParams[ImageParameterKeys.HEIGHT] = finalSize.Height.ToString();
}
if (finalSize.Width > 0)
{
urlParams[ImageParameterKeys.WIDTH] = finalSize.Width.ToString();
}
Action <string, string> originalAttributeClean = (exists, missing) =>
{
if (origionalKeys.Contains(exists) && !origionalKeys.Contains(missing))
{
urlParams.Remove(missing);
htmlParams.Remove(missing);
}
};
//we do some smart clean up
originalAttributeClean(ImageParameterKeys.WIDTHHTML, ImageParameterKeys.HEIGHTHTML);
originalAttributeClean(ImageParameterKeys.HEIGHTHTML, ImageParameterKeys.WIDTHHTML);
if (!outputHeightWidth)
{
htmlParams.Remove(ImageParameterKeys.WIDTHHTML);
htmlParams.Remove(ImageParameterKeys.HEIGHTHTML);
}
var builder = new UrlBuilder(image.Src);
foreach (var key in urlParams.Keys)
{
builder.AddToQueryString(key, urlParams[key]);
}
string mediaUrl = builder.ToString();
#if (SC81 || SC80 || SC75 || SC82)
mediaUrl = ProtectMediaUrl(mediaUrl);
#endif
mediaUrl = HttpUtility.HtmlEncode(mediaUrl);
return(ImageTagFormat.Formatted(mediaUrl, Utilities.ConvertAttributes(htmlParams, QuotationMark), QuotationMark));
}
/// <summary>
/// Renders HTML for an image
/// </summary>
/// <param name="image">The image to render</param>
/// <param name="attributes">Additional parameters to add. Do not include alt or src</param>
/// <param name="outputHeightWidth">Indicates if the height and width attributes should be output when rendering the image</param>
/// <returns>An img HTML element</returns>
public virtual string RenderImage(
Fields.Image image,
SafeDictionary <string> attributes,
bool outputHeightWidth = false
)
{
if (image == null)
{
return(string.Empty);
}
if (attributes == null)
{
attributes = new SafeDictionary <string>();
}
var origionalKeys = attributes.Keys.ToList();
//should there be some warning about these removals?
AttributeCheck(attributes, ImageParameterKeys.CLASS, image.Class);
AttributeCheck(attributes, ImageParameterKeys.ALT, image.Alt);
AttributeCheck(attributes, ImageParameterKeys.BORDER, image.Border);
if (image.HSpace > 0)
{
AttributeCheck(attributes, ImageParameterKeys.HSPACE, image.HSpace.ToString(CultureInfo.InvariantCulture));
}
if (image.VSpace > 0)
{
AttributeCheck(attributes, ImageParameterKeys.VSPACE, image.VSpace.ToString(CultureInfo.InvariantCulture));
}
if (image.Width > 0)
{
AttributeCheck(attributes, ImageParameterKeys.WIDTHHTML, image.Width.ToString(CultureInfo.InvariantCulture));
}
if (image.Height > 0)
{
AttributeCheck(attributes, ImageParameterKeys.HEIGHTHTML, image.Height.ToString(CultureInfo.InvariantCulture));
}
var urlParams = new SafeDictionary <string>();
var htmlParams = new SafeDictionary <string>();
/*
* ME - This method is used to render images rather than going back to the fieldrender
* because it stops another call having to be passed to Sitecore.
*/
if (image == null || image.Src.IsNullOrWhiteSpace())
{
return("");
}
if (attributes == null)
{
attributes = new SafeDictionary <string>();
}
Action <string> remove = key => attributes.Remove(key);
Action <string> url = key =>
{
urlParams.Add(key, attributes[key]);
remove(key);
};
Action <string> html = key =>
{
htmlParams.Add(key, attributes[key]);
remove(key);
};
Action <string> both = key =>
{
htmlParams.Add(key, attributes[key]);
urlParams.Add(key, attributes[key]);
remove(key);
};
var keys = attributes.Keys.ToList();
foreach (var key in keys)
{
switch (key)
{
case ImageParameterKeys.BORDER:
case ImageParameterKeys.ALT:
case ImageParameterKeys.HSPACE:
case ImageParameterKeys.VSPACE:
case ImageParameterKeys.CLASS:
case ImageParameterKeys.WIDTHHTML:
case ImageParameterKeys.HEIGHTHTML:
html(key);
break;
case ImageParameterKeys.OUTPUT_METHOD:
case ImageParameterKeys.ALLOW_STRETCH:
case ImageParameterKeys.IGNORE_ASPECT_RATIO:
case ImageParameterKeys.SCALE:
case ImageParameterKeys.MAX_WIDTH:
case ImageParameterKeys.MAX_HEIGHT:
case ImageParameterKeys.THUMBNAIL:
case ImageParameterKeys.BACKGROUND_COLOR:
case ImageParameterKeys.DATABASE:
case ImageParameterKeys.LANGUAGE:
case ImageParameterKeys.VERSION:
case ImageParameterKeys.DISABLE_MEDIA_CACHE:
case ImageParameterKeys.WIDTH:
case ImageParameterKeys.HEIGHT:
url(key);
break;
default:
html(key);
break;
}
}
//copy width and height across to url
if (!urlParams.ContainsKey(ImageParameterKeys.WIDTH) && !urlParams.ContainsKey(ImageParameterKeys.HEIGHT))
{
if (origionalKeys.Contains(ImageParameterKeys.WIDTHHTML))
{
urlParams[ImageParameterKeys.WIDTH] = htmlParams[ImageParameterKeys.WIDTHHTML];
}
if (origionalKeys.Contains(ImageParameterKeys.HEIGHTHTML))
{
urlParams[ImageParameterKeys.HEIGHT] = htmlParams[ImageParameterKeys.HEIGHTHTML];
}
}
if (!urlParams.ContainsKey(ImageParameterKeys.LANGUAGE) && image.Language != null)
{
urlParams[ImageParameterKeys.LANGUAGE] = image.Language.Name;
}
//calculate size
var finalSize = Utilities.ResizeImage(
image.Width,
image.Height,
urlParams[ImageParameterKeys.SCALE].ToFlaot(),
urlParams[ImageParameterKeys.WIDTH].ToInt(),
urlParams[ImageParameterKeys.HEIGHT].ToInt(),
urlParams[ImageParameterKeys.MAX_WIDTH].ToInt(),
urlParams[ImageParameterKeys.MAX_HEIGHT].ToInt());
urlParams[ImageParameterKeys.HEIGHT] = finalSize.Height.ToString();
urlParams[ImageParameterKeys.WIDTH] = finalSize.Width.ToString();
Action <string, string> originalAttributeClean = (exists, missing) =>
{
if (origionalKeys.Contains(exists) && !origionalKeys.Contains(missing))
{
urlParams.Remove(missing);
htmlParams.Remove(missing);
}
};
//we do some smart clean up
originalAttributeClean(ImageParameterKeys.WIDTHHTML, ImageParameterKeys.HEIGHTHTML);
originalAttributeClean(ImageParameterKeys.HEIGHTHTML, ImageParameterKeys.WIDTHHTML);
if (!outputHeightWidth)
{
htmlParams.Remove(ImageParameterKeys.WIDTHHTML);
htmlParams.Remove(ImageParameterKeys.HEIGHTHTML);
}
var builder = new UrlBuilder(image.Src);
foreach (var key in urlParams.Keys)
{
builder.AddToQueryString(key, urlParams[key]);
}
string mediaUrl = builder.ToString();
#if (SC80 || SC75)
mediaUrl = ProtectMediaUrl(mediaUrl);
#endif
return(ImageTagFormat.Formatted(mediaUrl, Utilities.ConvertAttributes(htmlParams, QuotationMark), QuotationMark));
}
