ImageMagick

AnnotateImage • FormatMagickCaption • GetMultilineTypeMetrics • GetTypeMetrics

AnnotateImage

AnnotateImage() annotates an image with text.

The format of the AnnotateImage method is:

MagickBooleanType AnnotateImage(Image *image,DrawInfo *draw_info)

A description of each parameter follows:

image: the image.
draw_info: the draw info.

FormatMagickCaption

FormatMagickCaption() formats a caption so that it fits within the image width. It returns the number of lines in the formatted caption.

The format of the FormatMagickCaption method is:

ssize_t FormatMagickCaption(Image *image,DrawInfo *draw_info,
  const MagickBooleanType split,TypeMetric *metrics,char **caption)

A description of each parameter follows.

image

The image.

draw_info

the draw info.

split

when no convenient line breaks-- insert newline.

metrics

Return the font metrics in this structure.

caption

the caption.

GetMultilineTypeMetrics

GetMultilineTypeMetrics() returns the following information for the specified font and text:

    character width
    character height
    ascender
    descender
    text width
    text height
    maximum horizontal advance
    bounds: x1
    bounds: y1
    bounds: x2
    bounds: y2
    origin: x
    origin: y
    underline position
    underline thickness

This method is like GetTypeMetrics() but it returns the maximum text width and height for multiple lines of text.

The format of the GetMultilineTypeMetrics method is:

MagickBooleanType GetMultilineTypeMetrics(Image *image,
  const DrawInfo *draw_info,TypeMetric *metrics)

A description of each parameter follows:

image: the image.
draw_info: the draw info.
metrics: Return the font metrics in this structure.

GetTypeMetrics

GetTypeMetrics() returns the following information for the specified font and text:

    character width
    character height
    ascender
    descender
    text width
    text height
    maximum horizontal advance
    bounds: x1
    bounds: y1
    bounds: x2
    bounds: y2
    origin: x
    origin: y
    underline position
    underline thickness

The format of the GetTypeMetrics method is:

MagickBooleanType GetTypeMetrics(Image *image,const DrawInfo *draw_info,
  TypeMetric *metrics)

A description of each parameter follows:

image: the image.
draw_info: the draw info.
metrics: Return the font metrics in this structure.