2006-08-07 Elijah Newren <newren gmail com>
Add a constrain_titlebar_visible constraint; should fix both bug
333328 and bug 345522. Not perfect (minor annoying snap pulling
windows back onscreen, plus an ugly hack almost as bad as the old
one), but tarballs are due in less than half an hour. ;-)
* src/boxes.[ch] (meta_rectangle_overlaps_with_region):
new function
* src/constraints.c (constrain_titlebar_visible): new function,
(enum ConstraintPriority, array all_constraints,
update_onscreen_requirements): various small changes to
accomodate the new function
* src/edge-resistance.c: remove the infinite edge resistance,
which was a big hack of a way to workaround the lack of a
titlebar_visible constraint
* src/window.[ch] (MetaWindow): new require_titlebar_visible
bitfield, (meta_window_new_with_attrs): initialized here
2006-01-09 Elijah Newren <newren@gmail.com>
Be more strict about what is considered a valid region with
partial struts. Fixes#322070.
* src/boxes.[ch]:
(meta_rectangle_expand_region_conditionally):
new function behaving like meta_rectangle_expand_region() but
which only does so when the width and height of the rectangles
meet a certain threshold
(replace_rect_with_list):
Remove a compiling warning
* src/constraints.c:
(constrain_partially_onscreen):
provide minimum thresholds in each direction for the size of the
rectangles to avoid cases where only a single pixel thick layer of
a window might be showing
2006-01-09 Elijah Newren <newren@gmail.com>
Allow edge resistance at both sides of a window and also when
edges don't overlap but are a single pixel away from doing so.
Fixes one of the zillions of issues covered in #321905.
* src/boxes.[ch]:
(meta_rectangle_edges_align):
new function to handle the overlap or off by one determining
whether edge resistance should kick in for an edge.
(meta_rectangle_edge_cmp_ignore_type):
new function to sort edges but ignore the type so that e.g. left &
right edges of windows can be used interchangeably.
(meta_rectangle_edge_cmp):
now uses meta_rectangle_edge_cmp_ignore_type() to do most the work
and just adds an extra condition
* src/edge-resistance.c:
(find_nearest_position):
use meta_rectangle_edges_align() now to determine whether the
edges align,
(apply_edge_resistance, apply_edge_resistance_to_each_side):
have the edge resistance kick in if either the beginning or ending
positions would cause overlap in the given direction -- fixes an
uncommon but annoying corner case,
(apply_edge_snapping, apply_edge_resistance_to_each_side,
meta_display_cleanup_edges,
stupid_sort_requiring_extra_pointer_dereference, cache_edges):
mix edges from both sides now
2005-11-18 Elijah Newren <newren@gmail.com>
Merge of all the changes on the constraints_experiments branch.
This is just a summary, to get the full ChangeLog of those
changes (approx. 2000 lines):
cvs -q -z3 update -Pd -r constraints_experiments
cvs -q -z3 diff -pu -r CONSTRAINTS_EXPERIMENTS_BRANCHPOINT ChangeLog
Bugs fixed:
unfiled - constraints.c is overly complicated[1]
unfiled - constraints.c is not robust when all constraints
cannot simultaneously be met (constraints need to be
prioritized)
unfiled - keep-titlebar-onscreen constraint is decoration
unaware (since get_outermost_onscreen_positions()
forgets to include decorations)
unfiled - keyboard snap-moving and snap-resizing snap to hidden
edges
109553 - gravity w/ simultaneous move & resize doesn't work
113601 - maximize vertical and horizontal should toggle and be
constrained
122196 - windows show up under vertical panels
122670 - jerky/random resizing of window via keyboard[2]
124582 - keyboard and mouse snap-resizing and snap-moving
erroneously moves the window multidimensionally
136307 - don't allow apps to resize themselves off the screen
(*cough* filechooser *cough*)
142016, 143784 - windows should not span multiple xineramas
unless placed there by the user
143145 - clamp new windows to screensize and force them
onscreen, if they'll fit
144126 - Handle pathological strut lists sanely[3]
149867 - fixed aspect ratio windows are difficult to resize[4]
152898 - make screen edges consistent; allow easy slamming of
windows into the left, right, and bottom edges of the
screen too.
154706 - bouncing weirdness at screen edge with keyboard moving
or resizing
156699 - avoid struts when placing windows, if possible (nasty
a11y blocker)
302456 - dragging offscreen too restrictive
304857 - wireframe moving off the top of the screen is misleading
308521 - make uni-directional resizing easier with
alt-middle-drag and prevent the occasional super
annoying resize-the-wrong-side(s) behavior
312007 - snap-resize moves windows with a minimum size
constraint
312104 - resizing the top of a window can cause the bottom to
grow
319351 - don't instantly snap on mouse-move-snapping, remove
braindeadedness of having order of releasing shift and
releasing button press matter so much
[1] fixed in my opinion, anyway.
[2] Actually, it's not totally fixed--it's just annoying
instead of almost completely unusable. Matthias had a
suggestion that may fix the remainder of the problems (see
http://tinyurl.com/bwzuu).
[3] This bug was originally about not-quite-so-pathological
cases but was left open for the worse cases. The code from
the branch handles the remainder of the cases mentioned in
this bug.
[4] Actually, although it's far better there's still some minor
issues left: a slight drift that's only noticeable after
lots of resizing, and potential problems with partially
onscreen constraints due to not clearing any
fixed_directions flags (aspect ratio windows get resized in
both directions and thus aren't fixed in one of them)
New feature:
81704 - edge resistance for user move and resize operations;
in particular 3 different kinds of resistance are
implemented:
Pixel-Distance: window movement is resisted when it
aligns with an edge unless the movement is greater than
a threshold number of pixels
Timeout: window movement past an edge is prevented until
a certain amount of time has elapsed during the
operation since the first request to move it past that
edge
Keyboard-Buildup: when moving or resizing with the
keyboard, once a window is aligned with a certain edge
it cannot move past until the correct direction has
been pressed enough times (e.g. 2 or 3 times)
Major changes:
- constraints.c has been rewritten; very few lines of code from
the old version remain. There is a comment near the top of
the function explaining the basics of how the new framework
works. A more detailed explanation can be found in
doc/how-constraints-works.txt
- edge-resistance.[ch] are new files implementing edge-resistance.
- boxes.[ch] are new files containing low-level error-prone
functions used heavily in constraints.c and edge-resistance.c,
among various places throughout the code. testboxes.c
contains a thorough testsuite for the boxes.[ch] functions
compiled into a program, testboxes.
- meta_window_move_resize_internal() *must* be told the gravity
of the associated operation (if it's just a move operation,
the gravity will be ignored, but for resize and move+resize
the correct value is needed)
- the craziness of different values that
meta_window_move_resize_internal() accepts has been documented
in a large comment at the beginning of the function. It may
be possible to clean this up some, but until then things will
remain as they were before--caller beware.
- screen and xinerama usable areas (i.e. places not covered by
e.g. panels) are cached in the workspace now, as are the
screen and xinerama edges. These get updated with the
workarea in src/workspace.c:ensure_work_areas_validated()
