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A Frame is a piece of space in a document that is filled by the
"flowables" in the story. For example in a book like document most
pages have the text paragraphs in one or two frames. For generality
a page might have several frames (for example for 3 column text or
for text that wraps around a graphic).
After creation a Frame is not usually manipulated directly by the
applications program -- it is used internally by the platypus modules.
Here is a diagramatid abstraction for the definitional part of a Frame::
width x2,y2
+---------------------------------+
| l top padding r | h
| e +-------------------------+ i | e
| f | | g | i
| t | | h | g
| | | t | h
| p | | | t
| a | | p |
| d | | a |
| | | d |
| +-------------------------+ |
| bottom padding |
+---------------------------------+
(x1,y1) <-- lower left corner
NOTE!! Frames are stateful objects. No single frame should be used in
two documents at the same time (especially in the presence of multithreading.
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zFrame._drawBoundaryc C s2 | j ||p| j| j| j| j| j | j| j d S )N)rs r% r r r; r< )r rL Z __boundary__r r r drawBoundary s zFrame.drawBoundaryc C s^ | j rtjd| j | jr&| j| x2t|dkrX|d }| j||ddrT|d= q(P q(W dS )zConsumes objects from the front of the list until the
frame is full. If it cannot fit one object, raises
an exception.z&enter Frame.addFromlist() for frame %sr )r_ N)r# rY rZ r" r% rt lenadd)r ZdrawlistrL headr r r addFromList s
zFrame.addFromListc G s | j jdg j| d S )NZ_generated_content)r$ r2 extend)r Cr r r add_generated_content, s zFrame.add_generated_contentc C s d| j | j| jrdpdf S )Nz (%s x %s%s)* )rG r? rC )r r r r
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