4coder/4ed_text_layout.cpp

66 lines
1.8 KiB
C++

/*
* Mr. 4th Dimention - Allen Webster
*
* 31.03.2019
*
* Text layout representation
*
*/
// TOP
internal void
text_layout_init(Application_Links *app, Text_Layout_Container *container){
block_zero_struct(container);
container->node_arena = make_arena(app);
}
internal Text_Layout*
text_layout_new__alloc_layout(Text_Layout_Container *container){
Text_Layout_Node *node = container->free_nodes;
if (node == 0){
node = push_array(&container->node_arena, Text_Layout_Node, 1);
}
else{
container->free_nodes = node->next;
}
return(&node->layout);
}
internal Text_Layout_ID
text_layout_new(Heap *heap, Text_Layout_Container *container, Buffer_ID buffer_id, Buffer_Point point){
Text_Layout *new_layout_data = text_layout_new__alloc_layout(container);
new_layout_data->buffer_id = buffer_id;
new_layout_data->point = point;
Text_Layout_ID new_id = ++container->id_counter;
insert_u32_Ptr_table(heap, &container->table, new_id, new_layout_data);
return(new_id);
}
internal b32
text_layout_get(Text_Layout_Container *container, Text_Layout_ID id, Text_Layout *out){
b32 result = false;
void *ptr = 0;
if (lookup_u32_Ptr_table(&container->table, id, &ptr)){
block_copy(out, ptr, sizeof(*out));
result = true;
}
return(result);
}
internal b32
text_layout_erase(Text_Layout_Container *container, Text_Layout_ID id){
b32 result = false;
void *ptr = 0;
if (lookup_u32_Ptr_table(&container->table, id, &ptr)){
erase_u32_Ptr_table(&container->table, id);
Text_Layout_Node *node = CastFromMember(Text_Layout_Node, layout, ptr);
node->next = container->free_nodes;
container->free_nodes = node;
result = true;
}
return(result);
}
// BOTTOM