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clutter/stage: Fix picking of rectangles with negative positions

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FLT_MIN is the smallest *positive* number above 0 that can be
represented as floating point number. If this is used to initialize the
maximum x/y coordinates of a rectangle, this will always be used if all
x/y coordinates of the rectangle are negative. This means that picking
at 0,0 will always be a hit for such rectangles.

Since mutter creates such a window for server side decorations on X11,
this window will always be picked at 0,0 preventing clicking/hovering
the activities button in gnome-shell at that coordinate.

Fixes https://gitlab.gnome.org/GNOME/mutter/issues/893
This commit is contained in:
Sebastian Keller 2019-12-23 17:53:53 +01:00
parent 498264959a
commit 674f52ba74
1 changed files with 2 additions and 2 deletions
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4
clutter/clutter/clutter-stage.c
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@ -443,9 +443,9 @@ is_inside_axis_aligned_rectangle (const graphene_point_t *point,
const graphene_point_t *vertices)
{
float min_x = FLT_MAX;
float max_x = FLT_MIN;
float max_x = -FLT_MAX;
float min_y = FLT_MAX;
float max_y = FLT_MIN;
float max_y = -FLT_MAX;
int i;
for (i = 0; i < 3; i++)