Add routines to find all the "screen edges" (where struts are considered

2005-10-31  Elijah Newren  <newren@gmail.com>

	Add routines to find all the "screen edges" (where struts are
	considered to be offscreen), plus a thorough testing case.

	* src/boxes.[ch] (meta_rectangle_free_list_and_elements):
	* src/testboxes.c (test_regions_okay, test_region_fitting,
	  test_clamping_to_region, test_clipping_to_region,
	  test_shoving_into_region):
	* src/workspace.c (meta_workspace_free,
	  meta_workspace_invalidate_work_area):
	meta_rectangle_free_spanning_set() was renamed to
	meta_rectangle_free_list_and_elements()

	* src/boxes.c:

	(meta_rectangle_region_to_string):
	Output SOMETHING if the list is empty

	(meta_rectangle_edge_to_string, meta_rectangle_edge_list_to_string):
	new printing functions for edges

	(meta_rectangle_get_minimal_spanning_set_for_region):
	clean up the overview comment a little

	(struts_are_disjoint):
	(sort_edges):
	(edges_overlap):
	(rectangle_and_edge_intersection):
	(add_edges):
	(split_edge):
	(fix_up_edges):
	(meta_rectangle_find_onscreen_edges):
	New functions to do various parts of finding all the screen edges

	* src/boxes.h:

	(BOX_LEFT, BOX_RIGHT, BOX_TOP, BOX_BOTTOM):
	convenience macros that I should have defined a long time ago

	(enum MetaEdgeType):
	(struct MetaEdge):
	new types for edges

	(meta_rectangle_edge_to_string):
	(meta_rectangle_edge_list_to_string):
	(meta_rectangle_find_onscreen_edges):
	new functions

	* src/common.h:

	(enum MetaDirection):
	direction stuff seems to be used everywhere so add a type here;
	only used in boxes for now, but add a note explaining several
	other places where it could be used to remove duplicative enums

	* src/testboxes.c:

	(new_onscreen_edge):
	(verify_edge_lists_are_equal):
	(test_find_onscreen_edges):
	new functions for testing the new "screen edge" finding abilities

	(main):
	add test_find_onscreen_edges() to the list

	(get_strut_list):
	new function factored out from get_screen_region()

	(get_screen_region):
	call get_strut_list() since it now has most of the code this
	function used to have.

	(get_screen_edges):
	new function to compute the screen edges using the struts in
	get_strut_list() and the meta_rectangle_find_onscreen_edges()
	function.

0 files changed, 0 insertions, 0 deletions