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add NFLAGS to ct_node

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NFLAGS will be used to avoid unnecessary CPU usage for events like resizing windows, a bitflag will be instead set to notify cursetree at the end of each ct_update
This commit is contained in:
Emile Clark-Boman 2025-09-14 00:13:55 +10:00
parent 759920a9cc
commit fa97c73522
2 changed files with 17 additions and 5 deletions
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16
cursetree/node.c
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@ -13,14 +13,21 @@ static inline struct ct_node *__alloc_node(void) {
}
/* Returns NULL if memory allocation failed.
* TODO: should dims be given as a parameter, or lazily computed in ct_update?
*/
struct ct_node *new_node(struct ct_dims *const dims,
struct ct_bounds *const bounds,
struct ct_node *const parent) {
struct ct_node *node = __alloc_node();
if (node == NULL) {
if (node != NULL) {
*node = (struct ct_node){
.surface = new_surface(dims, bounds),
/* copy the parent's dimensions for now and request
* cursetree resize this node appropriately afterwards
* WARNING: new_node doesn't set the NFLAG_RESIZE request flag
* WARNING: that should be done by a function calling new_node
*/
.surface = new_surface(parent->surface->dims, bounds),
.flags = NFLAG_EMPTY,
.parent = parent,
.child = (struct ct_node **)malloc(NODE_INIT_CHILDREN *
@ -28,7 +35,6 @@ struct ct_node *new_node(struct ct_dims *const dims,
.csize = NODE_INIT_CHILDREN,
.cindex = 0,
.axis = AXIS_X,
.ratio = 0,
};
}
@ -151,6 +157,8 @@ int insert_child_node(struct ct_node *const parent, struct ct_node *const child,
// do insertion
parent->child[i] = child;
parent->cindex++;
// request cursetree recompute dimensions recursively from parent
parent->flags |= NFLAG_RESIZE;
return EXIT_SUCCESS;
}
@ -191,6 +199,8 @@ struct ct_node *remove_child_node(struct ct_node *const parent,
}
parent->cindex--;
__set_cbounds(parent, child, false);
// request cursetree recompute dimensions recursively from parent
parent->flags |= NFLAG_RESIZE;
return child;
}

6
cursetree/node.h
View file

@ -13,11 +13,15 @@ typedef struct _win_st WINDOW;
#define NODE_CHILDREN_GROWTH 1.5
#define CINDEX_MAX UCHAR_MAX
#define NFLAG_EMPTY (0)
#define NFLAG_RESIZE (1<<0)
/* Child Index */
typedef unsigned char cindex;
struct ct_node {
struct ct_surface *surface;
unsigned char flags;
struct ct_node *parent;
enum ct_axis axis;
@ -30,8 +34,6 @@ struct ct_node {
int wmin_rel;
int hmin_rel;
} cbounds;
float ratio;
};
/* === External Interface === */