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Added gemtk_obj_create_popup_tree util.

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This commit is contained in:
Ole Loots 2013-11-23 14:45:01 +01:00
parent 46a88fe8f4
commit 559a902cbe
2 changed files with 137 additions and 0 deletions
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4
atari/gemtk/gemtk.h
View File

@ -279,4 +279,8 @@ bool gemtk_obj_is_inside(OBJECT * tree, short obj, GRECT *area);
OBJECT *gemtk_obj_get_tree(int idx);
void gemtk_obj_mouse_sprite(OBJECT *tree, int index);
OBJECT *gemtk_obj_tree_copy(OBJECT *tree);
OBJECT * gemtk_obj_create_popup_tree(const char **items, int nitems,
char * selected, bool horizontal,
int max_width);
void gemtk_obj_destroy_popup_tree(OBJECT * popup);
#endif // GEMTK_H_INCLUDED

133
atari/gemtk/objc.c
View File

@ -368,3 +368,136 @@ OBJECT *gemtk_obj_tree_copy(OBJECT *tree)
return(new_tree);
}
OBJECT * gemtk_obj_create_popup_tree(const char **items, int nitems,
char * selected, bool horizontal,
int max_width)
{
OBJECT * popup = NULL;
int box_width = 0;
int box_height = 0;
int char_width = 10;
int char_height = 16;
int item_height; // height of each item
assert(items != NULL);
item_height = char_height;
/* Allocate room for n items and the root G_BOX: */
popup = calloc(nitems+1, sizeof(OBJECT));
assert(popup != null);
for (int i=0; i<nitems; i++) {
int len = strlen(items[i]);
if (horizontal && (max_width<1)) {
box_width += len * char_width;
}
else if (!horizontal){
/* Detect max width, used for vertical rendering: */
if(len*char_width > box_width){
box_width = (len+2) * char_width;
}
box_height += item_height;
}
}
if (max_width>0){
box_width = max_width;
}
if (horizontal) {
box_height = item_height;
}
/*
printf("popup height: %d, popup width: %d\n", box_height, box_width);
*/
popup[0].ob_next = -1; /**< object's next sibling */
popup[0].ob_head = 1; /**< head of object's children */
popup[0].ob_tail = nitems; /**< tail of object's children */
popup[0].ob_type = G_BOX; /**< type of object */
popup[0].ob_flags = OF_FL3DBAK; /**< flags */
popup[0].ob_state = OS_NORMAL; /**< state */
popup[0].ob_spec.index = (long) 16650496L; /**< object-specific data */
popup[0].ob_x = 0; /**< upper left corner of object */
popup[0].ob_y = 0; /**< upper left corner of object */
popup[0].ob_width = box_width; /**< width of obj */
popup[0].ob_height = box_height;
/* Add items to popup: */
int xpos = 0, ypos = 0;
for (int i=0; i<nitems; i++) {
int state = OS_NORMAL;
int flags = OF_NONE;
int item_width;
char * string = calloc(1, strlen(items[i])+3);
snprintf(string, strlen(items[i])+3, " %s", items[i]);
if (selected != NULL) {
if (strcmp(selected, items[i]) == 0) {
state |= OS_CHECKED;
}
}
if (i == nitems-1) {
flags |= OF_LASTOB;
}
item_width = (horizontal) ? ((int)strlen(items[i])*char_width) : box_width;
/*
printf("addin popup item \"%s\" (w: %d, h: %d, flags: %x) at %d/%d\n", items[i],
item_width, item_height, flags,
xpos, ypos);
*/
popup[i+1].ob_next = ((flags&OF_LASTOB) != 0) ? 0 : i+2; /**< object's next sibling */
popup[i+1].ob_head = -1; /**< head of object's children */
popup[i+1].ob_tail = -1; /**< tail of object's children */
popup[i+1].ob_type = G_STRING; /**< type of object */
popup[i+1].ob_flags = flags; /**< flags */
popup[i+1].ob_state = state; /**< state */
popup[i+1].ob_spec.free_string = string; /**< object-specific data */
popup[i+1].ob_x = xpos; /**< upper left corner of object */
popup[i+1].ob_y = ypos; /**< upper left corner of object */
popup[i+1].ob_width = item_width; /**< width of obj */
popup[i+1].ob_height = item_height;
if (horizontal) {
xpos += item_width;
}
else {
ypos += item_height;
}
}
return(popup);
}
void gemtk_obj_destroy_popup_tree(OBJECT * popup)
{
int i=0;
while (1) {
if (popup[i].ob_type == G_STRING) {
free(popup[i+1].ob_spec.free_string);
}
if((popup[i].ob_flags & OF_LASTOB) != OF_LASTOB){
break;
}
i++;
}
free(popup);
}