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Implement constructing selection getter objects

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So far they do not do match. The selection and target are specified and
a window is created for a transfer, but no transfer is actually started
yet.

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2019-02-07 15:47:06 +01:00
parent e17912ec0c
commit 010c51aa83
1 changed files with 91 additions and 0 deletions
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91
objects/selection_getter.c
View file

@ -20,10 +20,101 @@
*/
#include "objects/selection_getter.h"
#include "common/luaobject.h"
#include "globalconf.h"
#define REGISTRY_GETTER_TABLE_INDEX "awesome_selection_getters"
typedef struct selection_getter_t
{
LUA_OBJECT_HEADER
/** Reference in the special table to this object */
int ref;
/** Window used for the transfer */
xcb_window_t window;
} selection_getter_t;
static lua_class_t selection_getter_class;
LUA_OBJECT_FUNCS(selection_getter_class, selection_getter_t, selection_getter)
static void
selection_getter_wipe(selection_getter_t *selection)
{
xcb_destroy_window(globalconf.connection, selection->window);
}
static int
luaA_selection_getter_new(lua_State *L)
{
size_t name_length, target_length;
const char *name, *target;
xcb_intern_atom_cookie_t cookies[2];
xcb_intern_atom_reply_t *reply;
selection_getter_t *selection;
xcb_atom_t name_atom, target_atom;
name = luaL_checklstring(L, 2, &name_length);
target = luaL_checklstring(L, 3, &target_length);
/* Create a selection object */
selection = (void *) selection_getter_class.allocator(L);
selection->window = xcb_generate_id(globalconf.connection);
xcb_create_window(globalconf.connection, globalconf.screen->root_depth,
selection->window, globalconf.screen->root, -1, -1, 1, 1, 0,
XCB_COPY_FROM_PARENT, globalconf.screen->root_visual, 0, NULL);
/* Save it in the registry */
lua_pushliteral(L, REGISTRY_GETTER_TABLE_INDEX);
lua_rawget(L, LUA_REGISTRYINDEX);
lua_pushvalue(L, -2);
selection->ref = luaL_ref(L, -2);
lua_pop(L, 1);
/* Get the atoms identifying the request */
cookies[0] = xcb_intern_atom_unchecked(globalconf.connection, false, name_length, name);
cookies[1] = xcb_intern_atom_unchecked(globalconf.connection, false, target_length, target);
reply = xcb_intern_atom_reply(globalconf.connection, cookies[0], NULL);
name_atom = reply ? reply->atom : XCB_NONE;
p_delete(&reply);
reply = xcb_intern_atom_reply(globalconf.connection, cookies[1], NULL);
target_atom = reply ? reply->atom : XCB_NONE;
p_delete(&reply);
(void) name_atom;
(void) target_atom;
return 1;
}
void
selection_getter_class_setup(lua_State *L)
{
static const struct luaL_Reg selection_getter_methods[] =
{
{ "__call", luaA_selection_getter_new },
{ NULL, NULL }
};
static const struct luaL_Reg selection_getter_metha[] = {
LUA_OBJECT_META(selection_getter)
LUA_CLASS_META
{ NULL, NULL }
};
/* Store a table in the registry that tracks active getters. This code does
* debug.getregistry(){REGISTRY_GETTER_TABLE_INDEX] = {}
*/
lua_pushliteral(L, REGISTRY_GETTER_TABLE_INDEX);
lua_newtable(L);
lua_rawset(L, LUA_REGISTRYINDEX);
luaA_class_setup(L, &selection_getter_class, "selection_getter", NULL,
(lua_class_allocator_t) selection_getter_new,
(lua_class_collector_t) selection_getter_wipe, NULL,
luaA_class_index_miss_property, luaA_class_newindex_miss_property,
selection_getter_methods, selection_getter_metha);
}
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