From 155899c65ed32245e2ccad4197a10c77017d835b Mon Sep 17 00:00:00 2001 From: Pietro Gagliardi Date: Sat, 30 Aug 2014 23:01:08 -0400 Subject: Out with the old... --- listbox_unix.go | 211 -------------------------------------------------------- 1 file changed, 211 deletions(-) delete mode 100644 listbox_unix.go (limited to 'listbox_unix.go') diff --git a/listbox_unix.go b/listbox_unix.go deleted file mode 100644 index 18dafba..0000000 --- a/listbox_unix.go +++ /dev/null @@ -1,211 +0,0 @@ -// +build !windows,!darwin,!plan9 - -// 17 february 2014 - -package ui - -import ( - "fmt" - "unsafe" -) - -/* -GTK+ 3.10 introduces a dedicated GtkListView type for simple listboxes like our Listbox. Unfortunately, since I want to target at least GTK+ 3.4, I need to do things the old, long, and hard way: manually with a GtkTreeView and GtkListStore model. - -You are not expected to understand this. - -if you must though: -GtkTreeViews are model/view. We use a GtkListStore as a model. -GtkTreeViews also separate selections into another type, but the GtkTreeView creates the selection object for us. -GtkTreeViews can scroll, but do not draw scrollbars or borders; we need to use a GtkScrolledWindow to hold the GtkTreeView to do so. We return the GtkScrolledWindow and get its control out when we want to access the GtkTreeView. -Like with Windows, there's a difference between signle-selection and multi-selection GtkTreeViews when it comes to getting the list of selections that we can exploit. The GtkTreeSelection class hands us an iterator and the model (for some reason). We pull a GtkTreePath out of the iterator, which we can then use to get the indices or text data. - -For more information, read - https://developer.gnome.org/gtk3/3.4/TreeWidget.html - http://ubuntuforums.org/showthread.php?t=1208655 - http://scentric.net/tutorial/sec-treemodel-remove-row.html - http://gtk.10911.n7.nabble.com/Scrollbars-in-a-GtkTreeView-td58076.html - http://stackoverflow.com/questions/11407447/gtk-treeview-get-current-row-index-in-python (I think; I don't remember if I wound up using this one as a reference or not; I know after that I found the ubuntuforums link above) -and the GTK+ reference documentation. -*/ - -// #include "gtk_unix.h" -// /* because cgo seems to choke on ... */ -// void gtkTreeModelGet(GtkTreeModel *model, GtkTreeIter *iter, gchar **gs) -// { -// /* 0 is the column #; we only have one column here */ -// gtk_tree_model_get(model, iter, 0, gs, -1); -// } -// GtkListStore *gtkListStoreNew(void) -// { -// /* 1 column that stores strings */ -// return gtk_list_store_new(1, G_TYPE_STRING); -// } -// void gtkListStoreSet(GtkListStore *ls, GtkTreeIter *iter, char *gs) -// { -// /* same parameters as in gtkTreeModelGet() */ -// gtk_list_store_set(ls, iter, 0, (gchar *) gs, -1); -// } -// GtkTreeViewColumn *gtkTreeViewColumnNewWithAttributes(GtkCellRenderer *renderer) -// { -// /* "" is the column header; "text" associates the text of the column with column 0 */ -// return gtk_tree_view_column_new_with_attributes("", renderer, "text", 0, NULL); -// } -import "C" - -func fromgtktreemodel(x *C.GtkTreeModel) *C.GtkWidget { - return (*C.GtkWidget)(unsafe.Pointer(x)) -} - -func togtktreemodel(what *C.GtkWidget) *C.GtkTreeModel { - return (*C.GtkTreeModel)(unsafe.Pointer(what)) -} - -func fromgtktreeview(x *C.GtkTreeView) *C.GtkWidget { - return (*C.GtkWidget)(unsafe.Pointer(x)) -} - -func togtktreeview(what *C.GtkWidget) *C.GtkTreeView { - return (*C.GtkTreeView)(unsafe.Pointer(what)) -} - -func gListboxNew(multisel bool) *C.GtkWidget { - store := C.gtkListStoreNew() - widget := C.gtk_tree_view_new_with_model((*C.GtkTreeModel)(unsafe.Pointer(store))) - tv := (*C.GtkTreeView)(unsafe.Pointer(widget)) - column := C.gtkTreeViewColumnNewWithAttributes(C.gtk_cell_renderer_text_new()) - C.gtk_tree_view_column_set_sizing(column, C.GTK_TREE_VIEW_COLUMN_AUTOSIZE) - C.gtk_tree_view_column_set_resizable(column, C.FALSE) // not resizeable by the user; just autoresize - C.gtk_tree_view_append_column(tv, column) - C.gtk_tree_view_set_headers_visible(tv, C.FALSE) - sel := C.GTK_SELECTION_SINGLE - if multisel { - sel = C.GTK_SELECTION_MULTIPLE - } - C.gtk_tree_selection_set_mode(C.gtk_tree_view_get_selection(tv), C.GtkSelectionMode(sel)) - scrollarea := C.gtk_scrolled_window_new((*C.GtkAdjustment)(nil), (*C.GtkAdjustment)(nil)) - // thanks to jlindgren in irc.gimp.net/#gtk+ - C.gtk_scrolled_window_set_shadow_type((*C.GtkScrolledWindow)(unsafe.Pointer(scrollarea)), C.GTK_SHADOW_IN) - C.gtk_container_add((*C.GtkContainer)(unsafe.Pointer(scrollarea)), widget) - return scrollarea -} - -func gListboxNewSingle() *C.GtkWidget { - return gListboxNew(false) -} - -func gListboxNewMulti() *C.GtkWidget { - return gListboxNew(true) -} - -func getTreeViewFrom(widget *C.GtkWidget) *C.GtkTreeView { - wid := C.gtk_bin_get_child((*C.GtkBin)(unsafe.Pointer(widget))) - return (*C.GtkTreeView)(unsafe.Pointer(wid)) -} - -func gListboxText(widget *C.GtkWidget) string { - var model *C.GtkTreeModel - var iter C.GtkTreeIter - var gs *C.gchar - - tv := getTreeViewFrom(widget) - sel := C.gtk_tree_view_get_selection(tv) - if !fromgbool(C.gtk_tree_selection_get_selected(sel, &model, &iter)) { - return "" - } - C.gtkTreeModelGet(model, &iter, &gs) - return fromgstr(gs) -} - -func gListboxAppend(widget *C.GtkWidget, what string) { - var iter C.GtkTreeIter - - tv := getTreeViewFrom(widget) - ls := (*C.GtkListStore)(unsafe.Pointer(C.gtk_tree_view_get_model(tv))) - C.gtk_list_store_append(ls, &iter) - cwhat := C.CString(what) - defer C.free(unsafe.Pointer(cwhat)) - C.gtkListStoreSet(ls, &iter, cwhat) -} - -func gListboxInsert(widget *C.GtkWidget, index int, what string) { - var iter C.GtkTreeIter - - tv := getTreeViewFrom(widget) - ls := (*C.GtkListStore)(unsafe.Pointer(C.gtk_tree_view_get_model(tv))) - C.gtk_list_store_insert(ls, &iter, C.gint(index)) - cwhat := C.CString(what) - defer C.free(unsafe.Pointer(cwhat)) - C.gtkListStoreSet(ls, &iter, cwhat) -} - -func gListboxSelectedMulti(widget *C.GtkWidget) (indices []int) { - var model *C.GtkTreeModel - - tv := getTreeViewFrom(widget) - sel := C.gtk_tree_view_get_selection(tv) - rows := C.gtk_tree_selection_get_selected_rows(sel, &model) - defer C.g_list_free_full(rows, C.GDestroyNotify(unsafe.Pointer(C.gtk_tree_path_free))) - // g_list_length() is O(N), but we need the length below, alas - len := C.g_list_length(rows) - if len == 0 { - return nil - } - indices = make([]int, len) - for i := C.guint(0); i < len; i++ { - path := (*C.GtkTreePath)(unsafe.Pointer(rows.data)) - idx := C.gtk_tree_path_get_indices(path) - indices[i] = int(*idx) - rows = rows.next - } - return indices -} - -func gListboxSelMultiTexts(widget *C.GtkWidget) (texts []string) { - var model *C.GtkTreeModel - var iter C.GtkTreeIter - var gs *C.gchar - - tv := getTreeViewFrom(widget) - sel := C.gtk_tree_view_get_selection(tv) - rows := C.gtk_tree_selection_get_selected_rows(sel, &model) - defer C.g_list_free_full(rows, C.GDestroyNotify(unsafe.Pointer(C.gtk_tree_path_free))) - len := C.g_list_length(rows) - if len == 0 { - return nil - } - texts = make([]string, len) - for i := C.guint(0); i < len; i++ { - path := (*C.GtkTreePath)(unsafe.Pointer(rows.data)) - if C.gtk_tree_model_get_iter(model, &iter, path) == C.FALSE { - panic("gtk_tree_model_get_iter() failed getting Listbox selected texts; reason unknown") - } - C.gtkTreeModelGet(model, &iter, &gs) - texts[i] = fromgstr(gs) - rows = rows.next - } - return texts -} - -func gListboxDelete(widget *C.GtkWidget, index int) { - var iter C.GtkTreeIter - - tv := getTreeViewFrom(widget) - ls := (*C.GtkListStore)(unsafe.Pointer(C.gtk_tree_view_get_model(tv))) - if C.gtk_tree_model_iter_nth_child((*C.GtkTreeModel)(unsafe.Pointer(ls)), &iter, (*C.GtkTreeIter)(nil), C.gint(index)) == C.FALSE { - panic(fmt.Errorf("error deleting row %d from GTK+ Listbox: no such index or some other error", index)) - } - C.gtk_list_store_remove(ls, &iter) -} - -// this is a separate function because Combobox uses it too -func gtkTreeModelListLen(model *C.GtkTreeModel) int { - // "As a special case, if iter is NULL, then the number of toplevel nodes is returned." - return int(C.gtk_tree_model_iter_n_children(model, (*C.GtkTreeIter)(nil))) -} - -func gListboxLen(widget *C.GtkWidget) int { - tv := getTreeViewFrom(widget) - model := C.gtk_tree_view_get_model(tv) - return gtkTreeModelListLen(model) -} -- cgit v1.2.3