Branch: Tag:

2001-09-10

2001-09-10 15:28:31 by Martin Nilsson <mani@lysator.liu.se>

Documented crop extensions.

Rev: server/base_server/image_cache.xml:1.6

224:    Keep n pixels from the beginning of the Y scale.</p>   </attr>    - <attr name=crop value='x0,y0-x1,y1' default='whole image'><p> -  Crop the image by specifying the pixel coordinates.</p> + <attr name=crop value='x1,y1-x2,y2|auto|guides-cross|guides-region'><p> +  Crops the image by using several differen methods. The simplest is to only +  specify the area to be cropped with x,y-x,y coordinates. By instead +  selecting "auto" the image will be cropped so that as many pixels as possible +  with the same color is removed from around the image.</p> +  +  <p>A more advanced cropping method can be used by giving the crop argument +  "guides-cross". The image will then be cropped around the intersection of +  two guides inside the image. Guides can be added to e.g. Photoshop and +  GIMP images. If several guides are present, which ones to use can be +  selected with the guides-index=x,y attribute, where x and y is the number +  of the guides. Guides cross cropping is usefull together with max-width +  and max-height attributes when creating thumb nails.</p> +  +  <p>A combination of guides cross cropping can be used by giving the crop +  argument "guides-region". In this cropping mode the area enclosed by +  two horizontal and two vertical guides are saved. Which guides to use +  is given by the guides-index=x1,y1-x2,y2 attribute, where the x and y +  parameters are the number of the guides. Guides can also be specified as +  guides-index=x,y. Then the saved area will be the one enclosed by the +  buides x,y and x+1,y+1, counting from left and top. Again, combine max-width +  and max-height makes a good effect, since scaling is performed after cropping.</p> +    <ex type='vert'>   <### crop='50,28-150,92'/>   </ex> -  +  +  <p>   </attr>      <h3>Format specific attributes</h3>
286:    Resolution, in pixels per inch.</p>   </attr>    - <attr name='pcx-ydpy' value='0-10000000.0' default='75.><p> + <attr name='pcx-ydpy' value='0-10000000.0' default='75.0'><p>    Resolution, in pixels per inch.</p>   </attr>