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Turn nested functions into real functions or macros

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This enables compilation with llvm-clang and thus closes ticket #101.
While it makes the code more ugly, I don’t see a beautiful solution
which would enable us to stay with the more elegant solution of
nested functions and still allow compilation with any other compiler
than gcc.
This commit is contained in:
Michael Stapelberg
2010-03-07 19:00:34 +01:00
parent f66d018e02
commit 85308715ea
5 changed files with 165 additions and 118 deletions
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177
src/floating.c
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@ -3,7 +3,7 @@
*
* i3 - an improved dynamic tiling window manager
*
* © 2009 Michael Stapelberg and contributors
* © 2009-2010 Michael Stapelberg and contributors
*
* See file LICENSE for license information.
*
@ -162,6 +162,69 @@ void floating_assign_to_workspace(Client *client, Workspace *new_workspace) {
client->workspace->fullscreen_client = client;
}
/*
* This is an ugly data structure which we need because there is no standard
* way of having nested functions (only available as a gcc extension at the
* moment, clang doesn’t support it) or blocks (only available as a clang
* extension and only on Mac OS X systems at the moment).
*
*/
struct callback_params {
border_t border;
xcb_button_press_event_t *event;
};
DRAGGING_CB(resize_callback) {
struct callback_params *params = extra;
xcb_button_press_event_t *event = params->event;
switch (params->border) {
case BORDER_RIGHT: {
int new_width = old_rect->width + (new_x - event->root_x);
if ((new_width < 0) ||
(new_width < client_min_width(client) && client->rect.width >= new_width))
return;
client->rect.width = new_width;
break;
}
case BORDER_BOTTOM: {
int new_height = old_rect->height + (new_y - event->root_y);
if ((new_height < 0) ||
(new_height < client_min_height(client) && client->rect.height >= new_height))
return;
client->rect.height = old_rect->height + (new_y - event->root_y);
break;
}
case BORDER_TOP: {
int new_height = old_rect->height + (event->root_y - new_y);
if ((new_height < 0) ||
(new_height < client_min_height(client) && client->rect.height >= new_height))
return;
client->rect.y = old_rect->y + (new_y - event->root_y);
client->rect.height = new_height;
break;
}
case BORDER_LEFT: {
int new_width = old_rect->width + (event->root_x - new_x);
if ((new_width < 0) ||
(new_width < client_min_width(client) && client->rect.width >= new_width))
return;
client->rect.x = old_rect->x + (new_x - event->root_x);
client->rect.width = new_width;
break;
}
}
/* Push the new position/size to X11 */
reposition_client(conn, client);
resize_client(conn, client);
xcb_flush(conn);
}
/*
* Called whenever the user clicks on a border (not the titlebar!) of a floating window.
* Determines on which border the user clicked and launches the drag_pointer function
@ -173,54 +236,6 @@ int floating_border_click(xcb_connection_t *conn, Client *client, xcb_button_pre
border_t border;
void resize_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
switch (border) {
case BORDER_RIGHT: {
int new_width = old_rect->width + (new_x - event->root_x);
if ((new_width < 0) ||
(new_width < client_min_width(client) && client->rect.width >= new_width))
return;
client->rect.width = new_width;
break;
}
case BORDER_BOTTOM: {
int new_height = old_rect->height + (new_y - event->root_y);
if ((new_height < 0) ||
(new_height < client_min_height(client) && client->rect.height >= new_height))
return;
client->rect.height = old_rect->height + (new_y - event->root_y);
break;
}
case BORDER_TOP: {
int new_height = old_rect->height + (event->root_y - new_y);
if ((new_height < 0) ||
(new_height < client_min_height(client) && client->rect.height >= new_height))
return;
client->rect.y = old_rect->y + (new_y - event->root_y);
client->rect.height = new_height;
break;
}
case BORDER_LEFT: {
int new_width = old_rect->width + (event->root_x - new_x);
if ((new_width < 0) ||
(new_width < client_min_width(client) && client->rect.width >= new_width))
return;
client->rect.x = old_rect->x + (new_x - event->root_x);
client->rect.width = new_width;
break;
}
}
/* Push the new position/size to X11 */
reposition_client(conn, client);
resize_client(conn, client);
xcb_flush(conn);
}
if (event->event_y < 2)
border = BORDER_TOP;
else if (event->event_y >= (client->rect.height - 2))
@ -236,11 +251,25 @@ int floating_border_click(xcb_connection_t *conn, Client *client, xcb_button_pre
DLOG("border = %d\n", border);
drag_pointer(conn, client, event, XCB_NONE, border, resize_callback);
struct callback_params params = { border, event };
drag_pointer(conn, client, event, XCB_NONE, border, resize_callback, &params);
return 1;
}
DRAGGING_CB(drag_window_callback) {
struct xcb_button_press_event_t *event = extra;
/* Reposition the client correctly while moving */
client->rect.x = old_rect->x + (new_x - event->root_x);
client->rect.y = old_rect->y + (new_y - event->root_y);
reposition_client(conn, client);
/* Because reposition_client does not send a faked configure event (only resize does),
* we need to initiate that on our own */
fake_absolute_configure_notify(conn, client);
/* fake_absolute_configure_notify flushes */
}
/*
* Called when the user clicked on the titlebar of a floating window.
@ -250,18 +279,23 @@ int floating_border_click(xcb_connection_t *conn, Client *client, xcb_button_pre
void floating_drag_window(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
DLOG("floating_drag_window\n");
void drag_window_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
/* Reposition the client correctly while moving */
client->rect.x = old_rect->x + (new_x - event->root_x);
client->rect.y = old_rect->y + (new_y - event->root_y);
reposition_client(conn, client);
/* Because reposition_client does not send a faked configure event (only resize does),
* we need to initiate that on our own */
fake_absolute_configure_notify(conn, client);
/* fake_absolute_configure_notify flushes */
}
drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback, event);
}
drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback);
DRAGGING_CB(resize_window_callback) {
xcb_button_press_event_t *event = extra;
int32_t new_width = old_rect->width + (new_x - event->root_x);
int32_t new_height = old_rect->height + (new_y - event->root_y);
/* Obey minimum window size and reposition the client */
if (new_width > 0 && new_width >= client_min_width(client))
client->rect.width = new_width;
if (new_height > 0 && new_height >= client_min_height(client))
client->rect.height = new_height;
/* resize_client flushes */
resize_client(conn, client);
}
/*
@ -273,22 +307,7 @@ void floating_drag_window(xcb_connection_t *conn, Client *client, xcb_button_pre
void floating_resize_window(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
DLOG("floating_resize_window\n");
void resize_window_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
int32_t new_width = old_rect->width + (new_x - event->root_x);
int32_t new_height = old_rect->height + (new_y - event->root_y);
/* Obey minimum window size and reposition the client */
if (new_width > 0 && new_width >= client_min_width(client))
client->rect.width = new_width;
if (new_height > 0 && new_height >= client_min_height(client))
client->rect.height = new_height;
/* resize_client flushes */
resize_client(conn, client);
}
drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback);
drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback, event);
}
@ -301,7 +320,7 @@ void floating_resize_window(xcb_connection_t *conn, Client *client, xcb_button_p
*
*/
void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event,
xcb_window_t confine_to, border_t border, callback_t callback) {
xcb_window_t confine_to, border_t border, callback_t callback, void *extra) {
xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
uint32_t new_x, new_y;
Rect old_rect;
@ -371,7 +390,7 @@ void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event
new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
callback(&old_rect, new_x, new_y);
callback(conn, client, &old_rect, new_x, new_y, extra);
FREE(last_motion_notify);
}
done: