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[ui] Clean up unused view states before drawing

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Used states are tracked by simply updating their last-used frame count
and any that don't match the current frame count when drawing are
deleted.
This commit is contained in:
Bill Currie 2023-07-02 12:12:03 +09:00
parent 85fd3c34cc
commit 153958a51f
1 changed files with 23 additions and 4 deletions
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27
libs/ui/imui.c
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@ -51,6 +51,7 @@ typedef struct imui_state_s {
char *label;
uint32_t label_len;
int key_offset;
uint32_t frame_count;
uint32_t entity;
} imui_state_t;
@ -69,7 +70,8 @@ struct imui_ctx_s {
int64_t frame_start;
int64_t frame_draw;
int64_t frame_end;
uint32_t framecount;
uint32_t frame_count;
uint32_t new_hot;
uint32_t hot;
uint32_t active;
@ -97,7 +99,7 @@ imui_state_new (imui_ctx_t *ctx)
ctx->states = state;
return state;
}
/*
static void
imui_state_free (imui_ctx_t *ctx, imui_state_t *state)
{
@ -107,7 +109,7 @@ imui_state_free (imui_ctx_t *ctx, imui_state_t *state)
*state->prev = state->next;
PR_RESFREE (ctx->state_map, state);
}
*/
static imui_state_t *
imui_get_state (imui_ctx_t *ctx, const char *label)
{
@ -125,12 +127,14 @@ imui_get_state (imui_ctx_t *ctx, const char *label)
}
imui_state_t *state = Hash_Find (ctx->tab, key);
if (state) {
state->frame_count = ctx->frame_count;
return state;
}
state = imui_state_new (ctx);
state->label = strdup (label);
state->label_len = label_len == ~0u ? strlen (label) : label_len;
state->key_offset = key_offset;
state->frame_count = ctx->frame_count;
Hash_Add (ctx->tab, state);
return state;
}
@ -227,17 +231,32 @@ void
IMUI_BeginFrame (imui_ctx_t *ctx)
{
ctx->frame_start = Sys_LongTime ();
ctx->framecount++;
ctx->frame_count++;
ctx->hot = ctx->new_hot;
ctx->new_hot = nullent;
}
static void
prune_objects (imui_ctx_t *ctx)
{
for (auto s = &ctx->states; *s; ) {
if ((*s)->frame_count == ctx->frame_count) {
s = &(*s)->next;
} else {
ECS_DelEntity (ctx->csys.reg, (*s)->entity);
imui_state_free (ctx, *s);
}
}
}
void
IMUI_Draw (imui_ctx_t *ctx)
{
ctx->frame_draw = Sys_LongTime ();
prune_objects (ctx);
View_UpdateHierarchy (ctx->root_view);
ctx->frame_end = Sys_LongTime ();
}