Object wrapping

Fundamentally a two-pass processes.

Proposal:

Do it at the page level during fb_ColumnBreaker

New method in fp_Page called UpdateForWrapping.

call this if next column is on a different page from the previous.

On the previous page call this UpdateForWrapping method

Need to deal with lines that no longer wrap objects (don't what gaps in in lines that used to wrap objects.)

Can only do the second pass after the first pass via the layout() method in fp_Column is called.

We use this to position frames. After the frames are positioned we do the second pass.

Need new member for for lines that indicate if they've been "wrapped."

Need a vector of wrapped lines in each column, filled during the layout() method.

Need a member function in columns that returns true if the column contains any wrapped lines

Update for wrapping.

Do this if there are frames placed on the page with text wrapping enabled.

Check if there are 0 frames and no wrapped lines. If so return.

if no wrapped lines, Check if the there is a frame with text wrapping. If not return.

If wrapped lines but no frames

Get a vector of the blocks in the page, format them, rebreak the column at the start of the page. (output of method needs to be whether to rebreak the column first column to break.)

Check if any lines overlap the frames. If not return.

OK this is our main work section.

Grab first line of the page.

Iterate through the lines in the columns until we come across a line overlaps a positioned and text wrapped frame.

Get it's block.

Reformat the Block with a pointer to this page. This reformat will place lines around the frames in the page via the getNewContainerForPage method.

getnext block and reformat with pointer to this page.

At end of block, do layout() method on all columns

Check if any lines overlap the frames.

if overlap goto 5

if not, identify the next container not on this page as the first container of the next

We're done!