2 #define I3__FILE__ "click.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
9 * click.c: Button press (mouse click) events.
17 #include <xcb/xcb_icccm.h>
19 #include <X11/XKBlib.h>
21 typedef enum { CLICK_BORDER = 0,
23 CLICK_INSIDE = 2 } click_destination_t;
26 * Finds the correct pair of first/second cons between the resize will take
27 * place according to the passed border position (top, left, right, bottom),
28 * then calls resize_graphical_handler().
31 static bool tiling_resize_for_border(Con *con, border_t border, xcb_button_press_event_t *event) {
32 DLOG("border = %d, con = %p\n", border, con);
35 direction_t search_direction;
38 search_direction = D_LEFT;
41 search_direction = D_RIGHT;
44 search_direction = D_UP;
47 search_direction = D_DOWN;
51 bool res = resize_find_tiling_participants(&first, &second, search_direction);
53 LOG("No second container in this direction found.\n");
57 assert(first != second);
58 assert(first->parent == second->parent);
60 /* The first container should always be in front of the second container */
61 if (search_direction == D_UP || search_direction == D_LEFT) {
67 const orientation_t orientation = ((border == BORDER_LEFT || border == BORDER_RIGHT) ? HORIZ : VERT);
69 resize_graphical_handler(first, second, orientation, event);
71 DLOG("After resize handler, rendering\n");
77 * Called when the user clicks using the floating_modifier, but the client is in
80 * Returns false if it does not do anything (that is, the click should be sent
84 static bool floating_mod_on_tiled_client(Con *con, xcb_button_press_event_t *event) {
85 /* The client is in tiling layout. We can still initiate a resize with the
86 * right mouse button, by chosing the border which is the most near one to
87 * the position of the mouse pointer */
88 int to_right = con->rect.width - event->event_x,
89 to_left = event->event_x,
90 to_top = event->event_y,
91 to_bottom = con->rect.height - event->event_y;
93 DLOG("click was %d px to the right, %d px to the left, %d px to top, %d px to bottom\n",
94 to_right, to_left, to_top, to_bottom);
96 if (to_right < to_left &&
99 return tiling_resize_for_border(con, BORDER_RIGHT, event);
101 if (to_left < to_right &&
104 return tiling_resize_for_border(con, BORDER_LEFT, event);
106 if (to_top < to_right &&
109 return tiling_resize_for_border(con, BORDER_TOP, event);
111 if (to_bottom < to_right &&
112 to_bottom < to_left &&
114 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
120 * Finds out which border was clicked on and calls tiling_resize_for_border().
123 static bool tiling_resize(Con *con, xcb_button_press_event_t *event, const click_destination_t dest) {
124 /* check if this was a click on the window border (and on which one) */
125 Rect bsr = con_border_style_rect(con);
126 DLOG("BORDER x = %d, y = %d for con %p, window 0x%08x\n",
127 event->event_x, event->event_y, con, event->event);
128 DLOG("checks for right >= %d\n", con->window_rect.x + con->window_rect.width);
129 if (dest == CLICK_DECORATION) {
130 /* The user clicked on a window decoration. We ignore the following case:
131 * The container is a h-split, tabbed or stacked container with > 1
132 * window. Decorations will end up next to each other and the user
133 * expects to switch to a window by clicking on its decoration. */
135 /* Since the container might either be the child *or* already a split
136 * container (in the case of a nested split container), we need to make
137 * sure that we are dealing with the split container here. */
138 Con *check_con = con;
139 if (con_is_leaf(check_con) && check_con->parent->type == CT_CON)
140 check_con = check_con->parent;
142 if ((check_con->layout == L_STACKED ||
143 check_con->layout == L_TABBED ||
144 con_orientation(check_con) == HORIZ) &&
145 con_num_children(check_con) > 1) {
146 DLOG("Not handling this resize, this container has > 1 child.\n");
149 return tiling_resize_for_border(con, BORDER_TOP, event);
152 if (event->event_x >= 0 && event->event_x <= (int32_t)bsr.x &&
153 event->event_y >= (int32_t)bsr.y && event->event_y <= (int32_t)(con->rect.height + bsr.height))
154 return tiling_resize_for_border(con, BORDER_LEFT, event);
156 if (event->event_x >= (int32_t)(con->window_rect.x + con->window_rect.width) &&
157 event->event_y >= (int32_t)bsr.y && event->event_y <= (int32_t)(con->rect.height + bsr.height))
158 return tiling_resize_for_border(con, BORDER_RIGHT, event);
160 if (event->event_y >= (int32_t)(con->window_rect.y + con->window_rect.height))
161 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
167 * Being called by handle_button_press, this function calls the appropriate
168 * functions for resizing/dragging.
171 static int route_click(Con *con, xcb_button_press_event_t *event, const bool mod_pressed, const click_destination_t dest) {
172 DLOG("--> click properties: mod = %d, destination = %d\n", mod_pressed, dest);
173 DLOG("--> OUTCOME = %p\n", con);
174 DLOG("type = %d, name = %s\n", con->type, con->name);
176 /* don’t handle dockarea cons, they must not be focused */
177 if (con->parent->type == CT_DOCKAREA)
180 /* if the user has bound an action to this click, it should override the
181 * default behavior. */
182 if (dest == CLICK_DECORATION || dest == CLICK_INSIDE) {
183 Binding *bind = get_binding_from_xcb_event((xcb_generic_event_t *)event);
184 /* clicks over a window decoration will always trigger the binding and
185 * clicks on the inside of the window will only trigger a binding if
186 * the --whole-window flag was given for the binding. */
187 if (bind && (dest == CLICK_DECORATION || bind->whole_window)) {
188 CommandResult *result = run_binding(bind, con);
190 /* ASYNC_POINTER eats the event */
191 xcb_allow_events(conn, XCB_ALLOW_ASYNC_POINTER, event->time);
194 if (result->needs_tree_render)
197 command_result_free(result);
203 /* There is no default behavior for button release events so we are done. */
204 if (event->response_type == XCB_BUTTON_RELEASE) {
208 /* Any click in a workspace should focus that workspace. If the
209 * workspace is on another output we need to do a workspace_show in
210 * order for i3bar (and others) to notice the change in workspace. */
211 Con *ws = con_get_workspace(con);
212 Con *focused_workspace = con_get_workspace(focused);
215 ws = TAILQ_FIRST(&(output_get_content(con_get_output(con))->focus_head));
220 if (ws != focused_workspace)
223 /* get the floating con */
224 Con *floatingcon = con_inside_floating(con);
225 const bool proportional = (event->state & BIND_SHIFT);
226 const bool in_stacked = (con->parent->layout == L_STACKED || con->parent->layout == L_TABBED);
228 /* 1: see if the user scrolled on the decoration of a stacked/tabbed con */
230 dest == CLICK_DECORATION &&
231 (event->detail == XCB_BUTTON_INDEX_4 ||
232 event->detail == XCB_BUTTON_INDEX_5)) {
233 DLOG("Scrolling on a window decoration\n");
234 orientation_t orientation = (con->parent->layout == L_STACKED ? VERT : HORIZ);
235 /* Focus the currently focused container on the same level that the
236 * user scrolled on. e.g. the tabbed decoration contains
237 * "urxvt | i3: V[xterm geeqie] | firefox",
238 * focus is on the xterm, but the user scrolled on urxvt.
239 * The splitv container will be focused. */
240 Con *focused = con->parent;
241 focused = TAILQ_FIRST(&(focused->focus_head));
243 /* To prevent scrolling from going outside the container (see ticket
244 * #557), we first check if scrolling is possible at all. */
245 bool scroll_prev_possible = (TAILQ_PREV(focused, nodes_head, nodes) != NULL);
246 bool scroll_next_possible = (TAILQ_NEXT(focused, nodes) != NULL);
247 if (event->detail == XCB_BUTTON_INDEX_4 && scroll_prev_possible)
248 tree_next('p', orientation);
249 else if (event->detail == XCB_BUTTON_INDEX_5 && scroll_next_possible)
250 tree_next('n', orientation);
254 /* 2: focus this con. */
257 /* 3: For floating containers, we also want to raise them on click.
258 * We will skip handling events on floating cons in fullscreen mode */
259 Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
260 if (floatingcon != NULL && fs != con) {
261 floating_raise_con(floatingcon);
263 /* 4: floating_modifier plus left mouse button drags */
264 if (mod_pressed && event->detail == XCB_BUTTON_INDEX_1) {
265 floating_drag_window(floatingcon, event);
269 /* 5: resize (floating) if this was a (left or right) click on the
270 * left/right/bottom border, or a right click on the decoration.
271 * also try resizing (tiling) if it was a click on the top */
272 if (mod_pressed && event->detail == XCB_BUTTON_INDEX_3) {
273 DLOG("floating resize due to floatingmodifier\n");
274 floating_resize_window(floatingcon, proportional, event);
278 if (!in_stacked && dest == CLICK_DECORATION) {
279 /* try tiling resize, but continue if it doesn’t work */
280 DLOG("tiling resize with fallback\n");
281 if (tiling_resize(con, event, dest))
285 if (dest == CLICK_DECORATION && event->detail == XCB_BUTTON_INDEX_3) {
286 DLOG("floating resize due to decoration right click\n");
287 floating_resize_window(floatingcon, proportional, event);
291 if (dest == CLICK_BORDER) {
292 DLOG("floating resize due to border click\n");
293 floating_resize_window(floatingcon, proportional, event);
297 /* 6: dragging, if this was a click on a decoration (which did not lead
299 if (!in_stacked && dest == CLICK_DECORATION) {
300 floating_drag_window(floatingcon, event);
308 /* for stacked/tabbed cons, the resizing applies to the parent
313 /* 7: floating modifier pressed, initiate a resize */
314 if (dest == CLICK_INSIDE && mod_pressed && event->detail == XCB_BUTTON_INDEX_3) {
315 if (floating_mod_on_tiled_client(con, event))
318 /* 8: otherwise, check for border/decoration clicks and resize */
319 else if ((dest == CLICK_BORDER || dest == CLICK_DECORATION) &&
320 (event->detail == XCB_BUTTON_INDEX_1 ||
321 event->detail == XCB_BUTTON_INDEX_3)) {
322 DLOG("Trying to resize (tiling)\n");
323 tiling_resize(con, event, dest);
327 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
335 * The button press X callback. This function determines whether the floating
336 * modifier is pressed and where the user clicked (decoration, border, inside
339 * Then, route_click is called on the appropriate con.
342 int handle_button_press(xcb_button_press_event_t *event) {
344 DLOG("Button %d %s on window 0x%08x (child 0x%08x) at (%d, %d) (root %d, %d)\n",
345 event->state, (event->response_type == XCB_BUTTON_PRESS ? "press" : "release"),
346 event->event, event->child, event->event_x, event->event_y, event->root_x,
349 last_timestamp = event->time;
351 const uint32_t mod = config.floating_modifier;
352 const bool mod_pressed = (mod != 0 && (event->state & mod) == mod);
353 DLOG("floating_mod = %d, detail = %d\n", mod_pressed, event->detail);
354 if ((con = con_by_window_id(event->event)))
355 return route_click(con, event, mod_pressed, CLICK_INSIDE);
357 if (!(con = con_by_frame_id(event->event))) {
358 /* If the root window is clicked, find the relevant output from the
359 * click coordinates and focus the output's active workspace. */
360 if (event->event == root && event->response_type == XCB_BUTTON_PRESS) {
362 TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
363 if (con_is_internal(output) ||
364 !rect_contains(output->rect, event->event_x, event->event_y))
367 ws = TAILQ_FIRST(&(output_get_content(output)->focus_head));
368 if (ws != con_get_workspace(focused)) {
377 ELOG("Clicked into unknown window?!\n");
378 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
383 if (event->child != XCB_NONE) {
384 DLOG("event->child not XCB_NONE, so this is an event which originated from a click into the application, but the application did not handle it.\n");
385 return route_click(con, event, mod_pressed, CLICK_INSIDE);
388 /* Check if the click was on the decoration of a child */
390 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
391 if (!rect_contains(child->deco_rect, event->event_x, event->event_y))
394 return route_click(child, event, mod_pressed, CLICK_DECORATION);
397 return route_click(con, event, mod_pressed, CLICK_BORDER);