2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
7 * click.c: Button press (mouse click) events.
15 #include <xcb/xcb_atom.h>
16 #include <xcb/xcb_icccm.h>
18 #include <X11/XKBlib.h>
20 typedef enum { CLICK_BORDER = 0, CLICK_DECORATION = 1, CLICK_INSIDE = 2 } click_destination_t;
23 * Finds the correct pair of first/second cons between the resize will take
24 * place according to the passed border position (top, left, right, bottom),
25 * then calls resize_graphical_handler().
28 static bool tiling_resize_for_border(Con *con, border_t border, xcb_button_press_event_t *event) {
29 DLOG("border = %d, con = %p\n", border, con);
30 char way = (border == BORDER_TOP || border == BORDER_LEFT ? 'p' : 'n');
31 orientation_t orientation = (border == BORDER_TOP || border == BORDER_BOTTOM ? VERT : HORIZ);
33 /* look for a parent container with the right orientation */
34 Con *first = NULL, *second = NULL;
35 Con *resize_con = con;
36 while (resize_con->type != CT_WORKSPACE &&
37 resize_con->type != CT_FLOATING_CON &&
38 resize_con->parent->orientation != orientation)
39 resize_con = resize_con->parent;
41 DLOG("resize_con = %p\n", resize_con);
42 if (resize_con->type != CT_WORKSPACE &&
43 resize_con->type != CT_FLOATING_CON &&
44 resize_con->parent->orientation == orientation) {
46 second = (way == 'n') ? TAILQ_NEXT(first, nodes) : TAILQ_PREV(first, nodes_head, nodes);
47 if (second == TAILQ_END(&(first->nodes_head))) {
50 else if (way == 'p') {
55 DLOG("first = %p, second = %p, resize_con = %p\n",
56 first, second, resize_con);
59 if (first == NULL || second == NULL) {
60 DLOG("Resize not possible\n");
64 assert(first != second);
65 assert(first->parent == second->parent);
67 /* We modify the X/Y position in the event so that the divider line is at
68 * the actual position of the border, not at the position of the click. */
69 if (orientation == HORIZ)
70 event->root_x = second->rect.x;
71 else event->root_y = second->rect.y;
73 resize_graphical_handler(first, second, orientation, event);
75 DLOG("After resize handler, rendering\n");
81 * Called when the user clicks using the floating_modifier, but the client is in
84 * Returns false if it does not do anything (that is, the click should be sent
88 static bool floating_mod_on_tiled_client(Con *con, xcb_button_press_event_t *event) {
89 /* The client is in tiling layout. We can still initiate a resize with the
90 * right mouse button, by chosing the border which is the most near one to
91 * the position of the mouse pointer */
92 int to_right = con->rect.width - event->event_x,
93 to_left = event->event_x,
94 to_top = event->event_y,
95 to_bottom = con->rect.height - event->event_y;
97 DLOG("click was %d px to the right, %d px to the left, %d px to top, %d px to bottom\n",
98 to_right, to_left, to_top, to_bottom);
100 if (to_right < to_left &&
102 to_right < to_bottom)
103 return tiling_resize_for_border(con, BORDER_RIGHT, event);
105 if (to_left < to_right &&
108 return tiling_resize_for_border(con, BORDER_LEFT, event);
110 if (to_top < to_right &&
113 return tiling_resize_for_border(con, BORDER_TOP, event);
115 if (to_bottom < to_right &&
116 to_bottom < to_left &&
118 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
124 * Finds out which border was clicked on and calls tiling_resize_for_border().
127 static bool tiling_resize(Con *con, xcb_button_press_event_t *event, const click_destination_t dest) {
128 /* check if this was a click on the window border (and on which one) */
129 Rect bsr = con_border_style_rect(con);
130 DLOG("BORDER x = %d, y = %d for con %p, window 0x%08x\n",
131 event->event_x, event->event_y, con, event->event);
132 DLOG("checks for right >= %d\n", con->window_rect.x + con->window_rect.width);
133 if (dest == CLICK_DECORATION) {
134 /* The user clicked on a window decoration. We ignore the following case:
135 * The container is a h-split, tabbed or stacked container with > 1
136 * window. Decorations will end up next to each other and the user
137 * expects to switch to a window by clicking on its decoration. */
139 /* Since the container might either be the child *or* already a split
140 * container (in the case of a nested split container), we need to make
141 * sure that we are dealing with the split container here. */
142 Con *check_con = con;
143 if (con_is_leaf(check_con) && check_con->parent->type == CT_CON)
144 check_con = check_con->parent;
146 if ((check_con->layout == L_STACKED ||
147 check_con->layout == L_TABBED ||
148 check_con->orientation == HORIZ) &&
149 con_num_children(check_con) > 1) {
150 DLOG("Not handling this resize, this container has > 1 child.\n");
153 return tiling_resize_for_border(con, BORDER_TOP, event);
156 if (event->event_x >= 0 && event->event_x <= bsr.x &&
157 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
158 return tiling_resize_for_border(con, BORDER_LEFT, event);
160 if (event->event_x >= (con->window_rect.x + con->window_rect.width) &&
161 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
162 return tiling_resize_for_border(con, BORDER_RIGHT, event);
164 if (event->event_y >= (con->window_rect.y + con->window_rect.height))
165 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
171 * Being called by handle_button_press, this function calls the appropriate
172 * functions for resizing/dragging.
175 static int route_click(Con *con, xcb_button_press_event_t *event, const bool mod_pressed, const click_destination_t dest) {
176 DLOG("--> click properties: mod = %d, destination = %d\n", mod_pressed, dest);
177 DLOG("--> OUTCOME = %p\n", con);
178 DLOG("type = %d, name = %s\n", con->type, con->name);
180 /* don’t handle dockarea cons, they must not be focused */
181 if (con->parent->type == CT_DOCKAREA)
184 /* get the floating con */
185 Con *floatingcon = con_inside_floating(con);
186 const bool proportional = (event->state & BIND_SHIFT);
187 const bool in_stacked = (con->parent->layout == L_STACKED || con->parent->layout == L_TABBED);
189 /* 1: see if the user scrolled on the decoration of a stacked/tabbed con */
191 dest == CLICK_DECORATION &&
192 (event->detail == XCB_BUTTON_INDEX_4 ||
193 event->detail == XCB_BUTTON_INDEX_5)) {
194 DLOG("Scrolling on a window decoration\n");
195 orientation_t orientation = (con->parent->layout == L_STACKED ? VERT : HORIZ);
196 if (event->detail == XCB_BUTTON_INDEX_4)
197 tree_next('p', orientation);
198 else tree_next('n', orientation);
202 /* 2: focus this con. If the workspace is on another output we need to
203 * do a workspace_show in order for i3bar (and others) to notice the
204 * change in workspace. */
205 Con *ws = con_get_workspace(con);
206 Con *focused_workspace = con_get_workspace(focused);
208 if (ws != focused_workspace)
210 focused_id = XCB_NONE;
213 /* 3: For floating containers, we also want to raise them on click.
214 * We will skip handling events on floating cons in fullscreen mode */
215 Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
216 if (floatingcon != NULL && fs == NULL) {
217 floating_raise_con(floatingcon);
219 /* 4: floating_modifier plus left mouse button drags */
220 if (mod_pressed && event->detail == 1) {
221 floating_drag_window(floatingcon, event);
225 /* 5: resize (floating) if this was a click on the left/right/bottom
226 * border. also try resizing (tiling) if it was a click on the top
227 * border, but continue if that does not work */
228 if (mod_pressed && event->detail == 3) {
229 DLOG("floating resize due to floatingmodifier\n");
230 floating_resize_window(floatingcon, proportional, event);
234 if (!in_stacked && dest == CLICK_DECORATION) {
235 /* try tiling resize, but continue if it doesn’t work */
236 DLOG("tiling resize with fallback\n");
237 if (tiling_resize(con, event, dest))
241 if (dest == CLICK_BORDER) {
242 DLOG("floating resize due to border click\n");
243 floating_resize_window(floatingcon, proportional, event);
247 /* 6: dragging, if this was a click on a decoration (which did not lead
249 if (!in_stacked && dest == CLICK_DECORATION) {
250 floating_drag_window(floatingcon, event);
258 /* for stacked/tabbed cons, the resizing applies to the parent
263 /* 7: floating modifier pressed, initiate a resize */
264 if (dest == CLICK_INSIDE && mod_pressed && event->detail == 3) {
265 if (floating_mod_on_tiled_client(con, event))
268 /* 8: otherwise, check for border/decoration clicks and resize */
269 else if (dest == CLICK_BORDER || dest == CLICK_DECORATION) {
270 DLOG("Trying to resize (tiling)\n");
271 tiling_resize(con, event, dest);
275 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
282 * The button press X callback. This function determines whether the floating
283 * modifier is pressed and where the user clicked (decoration, border, inside
286 * Then, route_click is called on the appropriate con.
289 int handle_button_press(xcb_button_press_event_t *event) {
291 DLOG("Button %d pressed on window 0x%08x\n", event->state, event->event);
293 last_timestamp = event->time;
295 const uint32_t mod = config.floating_modifier;
296 const bool mod_pressed = (mod != 0 && (event->state & mod) == mod);
297 DLOG("floating_mod = %d, detail = %d\n", mod_pressed, event->detail);
298 if ((con = con_by_window_id(event->event)))
299 return route_click(con, event, mod_pressed, CLICK_INSIDE);
301 if (!(con = con_by_frame_id(event->event))) {
302 ELOG("Clicked into unknown window?!\n");
303 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
308 /* Check if the click was on the decoration of a child */
310 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
311 if (!rect_contains(child->deco_rect, event->event_x, event->event_y))
314 return route_click(child, event, mod_pressed, CLICK_DECORATION);
317 return route_click(con, event, mod_pressed, CLICK_BORDER);