From: Dirk Hohndel <dirk@hohndel.org>
Date: Tue, 4 Oct 2011 19:14:26 +0000 (-0700)
Subject: Change plot routine to take a drawing_area as argument
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=b72ade0e78825dd97add4c7607c574df351abed0;hp=b72ade0e78825dd97add4c7607c574df351abed0;p=ext%2Fsubsurface.git

Change plot routine to take a drawing_area as argument

Previously we passed in width and height and the routine itself decided to
keep 5% margin around each edge - oddly doing this with double precision,
even though this is all integer coordinates.

Instead we are now passing in a drawing_area. We are kind of abusing the
cairo_rectangle_int_t data type here - but it seemed silly to redefine a
new data type for this.
Width and height give the size of the TOTAL drawing area (as before).
x and y give the offset from the edges - so the EFFECTIVE drawing area is
width-2x and height-2y
This is in preparation for adding tooltips - those need to know the
coordinate offsets from the edges - so having this hard coded inside the
plot function didn't make sense anymore.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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