static inline void fill_color(xyStackArray* stack, const T* replace_color, const T* target_color, T* r, T* g, T* b, int width, int x, int y, T tol)
{
int offset = y * width + x;
if (!color_equal(replace_color, r[offset], g[offset], b[offset]) && color_is_similar(target_color, r[offset], g[offset], b[offset], tol))
{
xyStackArrayPush(stack, x, y);
color_copy(replace_color, r[offset], g[offset], b[offset]);
}
}
static void
cb_color_changed_back (G_GNUC_UNUSED GOComboColor *go_combo_color,
GOColor color, G_GNUC_UNUSED gboolean custom,
G_GNUC_UNUSED gboolean by_user,
G_GNUC_UNUSED gboolean is_default,
SheetManager *state)
{
GList *selected_rows, *l;
GtkTreeSelection *selection = gtk_tree_view_get_selection (state->sheet_list);
WorkbookSheetState *old_state;
WorkbookControl *wbc = GNM_WBC (state->wbcg);
Workbook *wb = wb_control_get_workbook (wbc);
GdkRGBA gdk_color;
GdkRGBA *p_gdk_color;
GnmColor *gnm_color;
g_return_if_fail (selection != NULL);
selected_rows = gtk_tree_selection_get_selected_rows (selection, NULL);
p_gdk_color = (color == 0) ? NULL : go_color_to_gdk_rgba (color, &gdk_color);
gnm_color = (color == 0) ? NULL : gnm_color_new_gdk (&gdk_color);
old_state = workbook_sheet_state_new (wb);
for (l = selected_rows; l != NULL; l = l->next) {
Sheet *this_sheet;
GtkTreeIter sel_iter;
GtkTreePath *path = l->data;
gtk_tree_model_get_iter (GTK_TREE_MODEL (state->model), &sel_iter, path);
gtk_tree_model_get (GTK_TREE_MODEL (state->model), &sel_iter,
SHEET_POINTER, &this_sheet,
-1);
if (color_equal (p_gdk_color, this_sheet->tab_color))
continue;
gtk_list_store_set (state->model, &sel_iter,
BACKGROUND_COLOUR, p_gdk_color,
-1);
g_object_set (this_sheet,
"tab-background", gnm_color,
NULL);
}
style_color_unref (gnm_color);
cmd_reorganize_sheets (wbc, old_state, NULL);
update_undo (state, wbc);
g_list_free_full (selected_rows, (GDestroyNotify) gtk_tree_path_free);
}
static void DoRenderFloodFillRGB(T** data, int width, int height, int start_x, int start_y, float* replace_data, float tolerance)
{
T *r = data[0], *g = data[1], *b = data[2];
int offset, x, y;
T target_color[3];
T replace_color[3];
T tol = (T)tolerance;
replace_color[0] = (T)replace_data[0];
replace_color[1] = (T)replace_data[1];
replace_color[2] = (T)replace_data[2];
offset = start_y * width + start_x;
if (color_equal(replace_color, r[offset], g[offset], b[offset]))
return;
color_init(target_color, r[offset], g[offset], b[offset]);
/* very simple 4 neighbors stack based flood fill */
xyStackArray* stack = xyStackArrayCreate();
/* a color in the xy_stack is always similar to the target color,
and it was already replaced */
xyStackArrayPush(stack, start_x, start_y);
color_copy(replace_color, r[offset], g[offset], b[offset]);
while (xyStackArrayHasData(stack))
{
xyStackArrayPop(stack, x, y);
/* right */
if (x < width - 1)
fill_color(stack, replace_color, target_color, r, g, b, width, x + 1, y, tol);
/* left */
if (x > 0)
fill_color(stack, replace_color, target_color, r, g, b, width, x - 1, y, tol);
/* top */
if (y < height - 1)
fill_color(stack, replace_color, target_color, r, g, b, width, x, y + 1, tol);
/* bottom */
if (y > 0)
fill_color(stack, replace_color, target_color, r, g, b, width, x, y - 1, tol);
}
xyStackArrayDestroy(stack);
}
