/**
* Get the exact tile for the given position and zoom.
*
* If the tile was unused then it's removed from the cache.
*
* After usage, please give it back using
* ewk_tile_matrix_tile_put(). If you just want to check if it exists,
* then use ewk_tile_matrix_tile_exact_exists().
*
* @param tm the tile matrix to get tile from.
* @param col the column number.
* @param row the row number.
* @param zoom the exact zoom to use.
*
* @return The tile instance or @c NULL if none is found. If the tile
* was in the unused cache it will be @b removed (thus
* considered used) and one should give it back with
* ewk_tile_matrix_tile_put() afterwards.
*
* @see ewk_tile_matrix_tile_nearest_get()
* @see ewk_tile_matrix_tile_exact_get()
*/
Ewk_Tile *ewk_tile_matrix_tile_exact_get(Ewk_Tile_Matrix *tm, unsigned long col, unsigned int row, float zoom)
{
Ewk_Tile *t, *item, *item_found = NULL;
Eina_Inlist *inl;
t = eina_matrixsparse_data_idx_get(tm->matrix, row, col);
if (!t)
return NULL;
if (t->zoom == zoom)
goto end;
EINA_INLIST_FOREACH(EINA_INLIST_GET(t), item) {
if (item->zoom != zoom)
continue;
item_found = item;
break;
}
if (!item_found)
return NULL;
inl = eina_inlist_promote(EINA_INLIST_GET(t), EINA_INLIST_GET(item_found));
eina_matrixsparse_data_idx_replace(tm->matrix, row, col, inl, NULL);
end:
if (!t->visible) {
if (!ewk_tile_unused_cache_tile_get(tm->tuc, t))
WRN("Ewk_Tile was unused but not in cache? bug!");
}
return t;
}
static void matrixsparse_check(Eina_Matrixsparse *matrix,
long data[MAX_ROWS][MAX_COLS],
unsigned long nrows __UNUSED__,
unsigned long ncols __UNUSED__)
{
unsigned long i, j;
long *test1;
for (i = 0; i < MAX_ROWS; i++)
for (j = 0; j < MAX_COLS; j++)
{
if (data[i][j] != 0)
{
test1 = eina_matrixsparse_data_idx_get(matrix, i, j);
fail_if(test1 == NULL || *test1 != data[i][j]);
}
else
{
test1 = eina_matrixsparse_data_idx_get(matrix, i, j);
fail_if(test1 != NULL);
}
}
}
/**
* Checks if tile of given zoom exists in matrix.
*
* @param tm the tile matrix to check tile existence.
* @param col the column number.
* @param row the row number.
* @param zoom the exact zoom to query.
*
* @return @c EINA_TRUE if found, @c EINA_FALSE otherwise.
*
* @see ewk_tile_matrix_tile_exact_get()
*/
Eina_Bool ewk_tile_matrix_tile_exact_exists(Ewk_Tile_Matrix *tm, unsigned long col, unsigned int row, float zoom)
{
Ewk_Tile *t, *item;
t = eina_matrixsparse_data_idx_get(tm->matrix, row, col);
if (!t)
return EINA_FALSE;
EINA_INLIST_FOREACH(EINA_INLIST_GET(t), item) {
if (item->zoom == zoom)
return EINA_TRUE;
}
return EINA_FALSE;
}
/**
* Get the nearest tile for given position and zoom.
*
* The nearest tile is the one at the given position but with the
* closest zoom, this being the division of the tile zoom by the
* desired zoom, the closest to 1.0 gets it.
*
* If the tile was unused then it's removed from the cache.
*
* After usage, please give it back using ewk_tile_matrix_tile_put().
*
* @param tm the tile matrix to get tile from.
* @param col the column number.
* @param row the row number.
* @param zoom the exact zoom to use.
*
* @return The tile instance or @c NULL if none is found. If the tile
* was in the unused cache it will be @b removed (thus
* considered used) and one should give it back with
* ewk_tile_matrix_tile_put() afterwards.
*/
Ewk_Tile *ewk_tile_matrix_tile_nearest_get(Ewk_Tile_Matrix *tm, unsigned long col, unsigned int row, float zoom)
{
Ewk_Tile *t, *item, *item_found = NULL;
Eina_Inlist *inl;
float zoom_found = 0;
EINA_SAFETY_ON_NULL_RETURN_VAL(tm, NULL);
EINA_SAFETY_ON_FALSE_RETURN_VAL(zoom > 0.0, NULL);
t = eina_matrixsparse_data_idx_get(tm->matrix, row, col);
if (!t)
return NULL;
if (t->zoom == zoom) {
item_found = t;
goto end;
}
EINA_INLIST_FOREACH(EINA_INLIST_GET(t), item) {
float cur_zoom = item->zoom;
if (cur_zoom == zoom) {
item_found = item;
break;
}
if (cur_zoom > zoom)
cur_zoom = zoom / cur_zoom;
else
cur_zoom = cur_zoom / zoom;
if (cur_zoom > zoom_found) {
item_found = item;
zoom_found = cur_zoom;
}
}
