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eeshow/gui/aoi.c (aoi_set_related): AoIs can now share clicks

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If A is related to B, then A can receive clicks while B is hovering,
without getting B de-hovered.

Note that in aoi_set_related(A, B), more than one A can share one B,
but an A can't have more than one B.
This commit is contained in:
Werner Almesberger 2016-08-19 03:25:56 -03:00
parent fe5bc4a55a
commit 49fe8518a5
2 changed files with 27 additions and 1 deletions
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24
eeshow/gui/aoi.c
View File

@ -83,11 +83,27 @@ bool aoi_hover(const struct aoi *aois, int x, int y)
}
static bool need_dehover(const struct aoi *aois)
{
const struct aoi *aoi;
if (!hovering)
return 0;
if (hovering->click)
return 0;
for (aoi = aois; aoi; aoi = aoi->next)
if (aoi->related == hovering && aoi->click)
return 0;
return 1;
}
bool aoi_click(const struct aoi *aois, int x, int y)
{
const struct aoi *aoi;
aoi_dehover();
if (need_dehover(aois))
aoi_dehover();
aoi = find_aoi(aois, x, y);
if (!aoi || !aoi->click)
@ -97,6 +113,12 @@ bool aoi_click(const struct aoi *aois, int x, int y)
}
void aoi_set_related(struct aoi *aoi, const struct aoi *related)
{
assert(!aoi->related);
aoi->related = related;
}
void aoi_remove(struct aoi **aois, const struct aoi *aoi)
{
if (hovering == aoi) {

4
eeshow/gui/aoi.h
View File

@ -24,6 +24,8 @@ struct aoi {
void (*click)(void *user);
void *user;
const struct aoi *related; /* considered equal for clicks */
struct aoi *next;
};
@ -34,6 +36,8 @@ bool aoi_hover(const struct aoi *aois, int x, int y);
bool aoi_click(const struct aoi *aois, int x, int y);
void aoi_set_related(struct aoi *aoi, const struct aoi *related);
void aoi_remove(struct aoi **aois, const struct aoi *aoi);
void aoi_dehover(void);