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, CLICK_DECORATION = 1, CLICK_INSIDE = 2 } click_destination_t;
24 * Finds the correct pair of first/second cons between the resize will take
25 * place according to the passed border position (top, left, right, bottom),
26 * then calls resize_graphical_handler().
29 static bool tiling_resize_for_border(Con *con, border_t border, xcb_button_press_event_t *event) {
30 DLOG("border = %d, con = %p\n", border, con);
33 direction_t search_direction;
36 search_direction = D_LEFT;
39 search_direction = D_RIGHT;
42 search_direction = D_UP;
45 search_direction = D_DOWN;
49 bool res = resize_find_tiling_participants(&first, &second, search_direction);
51 LOG("No second container in this direction found.\n");
55 assert(first != second);
56 assert(first->parent == second->parent);
58 /* The first container should always be in front of the second container */
59 if (search_direction == D_UP || search_direction == D_LEFT) {
65 /* We modify the X/Y position in the event so that the divider line is at
66 * the actual position of the border, not at the position of the click. */
67 const orientation_t orientation = ((border == BORDER_LEFT || border == BORDER_RIGHT) ? HORIZ : VERT);
68 if (orientation == HORIZ)
69 event->root_x = second->rect.x;
70 else event->root_y = second->rect.y;
72 resize_graphical_handler(first, second, orientation, event);
74 DLOG("After resize handler, rendering\n");
80 * Called when the user clicks using the floating_modifier, but the client is in
83 * Returns false if it does not do anything (that is, the click should be sent
87 static bool floating_mod_on_tiled_client(Con *con, xcb_button_press_event_t *event) {
88 /* The client is in tiling layout. We can still initiate a resize with the
89 * right mouse button, by chosing the border which is the most near one to
90 * the position of the mouse pointer */
91 int to_right = con->rect.width - event->event_x,
92 to_left = event->event_x,
93 to_top = event->event_y,
94 to_bottom = con->rect.height - event->event_y;
96 DLOG("click was %d px to the right, %d px to the left, %d px to top, %d px to bottom\n",
97 to_right, to_left, to_top, to_bottom);
99 if (to_right < to_left &&
101 to_right < to_bottom)
102 return tiling_resize_for_border(con, BORDER_RIGHT, event);
104 if (to_left < to_right &&
107 return tiling_resize_for_border(con, BORDER_LEFT, event);
109 if (to_top < to_right &&
112 return tiling_resize_for_border(con, BORDER_TOP, event);
114 if (to_bottom < to_right &&
115 to_bottom < to_left &&
117 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
123 * Finds out which border was clicked on and calls tiling_resize_for_border().
126 static bool tiling_resize(Con *con, xcb_button_press_event_t *event, const click_destination_t dest) {
127 /* check if this was a click on the window border (and on which one) */
128 Rect bsr = con_border_style_rect(con);
129 DLOG("BORDER x = %d, y = %d for con %p, window 0x%08x\n",
130 event->event_x, event->event_y, con, event->event);
131 DLOG("checks for right >= %d\n", con->window_rect.x + con->window_rect.width);
132 if (dest == CLICK_DECORATION) {
133 /* The user clicked on a window decoration. We ignore the following case:
134 * The container is a h-split, tabbed or stacked container with > 1
135 * window. Decorations will end up next to each other and the user
136 * expects to switch to a window by clicking on its decoration. */
138 /* Since the container might either be the child *or* already a split
139 * container (in the case of a nested split container), we need to make
140 * sure that we are dealing with the split container here. */
141 Con *check_con = con;
142 if (con_is_leaf(check_con) && check_con->parent->type == CT_CON)
143 check_con = check_con->parent;
145 if ((check_con->layout == L_STACKED ||
146 check_con->layout == L_TABBED ||
147 con_orientation(check_con) == HORIZ) &&
148 con_num_children(check_con) > 1) {
149 DLOG("Not handling this resize, this container has > 1 child.\n");
152 return tiling_resize_for_border(con, BORDER_TOP, event);
155 if (event->event_x >= 0 && event->event_x <= bsr.x &&
156 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
157 return tiling_resize_for_border(con, BORDER_LEFT, event);
159 if (event->event_x >= (con->window_rect.x + con->window_rect.width) &&
160 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
161 return tiling_resize_for_border(con, BORDER_RIGHT, event);
163 if (event->event_y >= (con->window_rect.y + con->window_rect.height))
164 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
170 * Being called by handle_button_press, this function calls the appropriate
171 * functions for resizing/dragging.
174 static int route_click(Con *con, xcb_button_press_event_t *event, const bool mod_pressed, const click_destination_t dest) {
175 DLOG("--> click properties: mod = %d, destination = %d\n", mod_pressed, dest);
176 DLOG("--> OUTCOME = %p\n", con);
177 DLOG("type = %d, name = %s\n", con->type, con->name);
179 /* Any click in a workspace should focus that workspace. If the
180 * workspace is on another output we need to do a workspace_show in
181 * order for i3bar (and others) to notice the change in workspace. */
182 Con *ws = con_get_workspace(con);
183 Con *focused_workspace = con_get_workspace(focused);
186 ws = TAILQ_FIRST(&(output_get_content(con_get_output(con))->focus_head));
191 if (ws != focused_workspace)
193 focused_id = XCB_NONE;
195 /* don’t handle dockarea cons, they must not be focused */
196 if (con->parent->type == CT_DOCKAREA)
199 /* get the floating con */
200 Con *floatingcon = con_inside_floating(con);
201 const bool proportional = (event->state & BIND_SHIFT);
202 const bool in_stacked = (con->parent->layout == L_STACKED || con->parent->layout == L_TABBED);
204 /* 1: see if the user scrolled on the decoration of a stacked/tabbed con */
206 dest == CLICK_DECORATION &&
207 (event->detail == XCB_BUTTON_INDEX_4 ||
208 event->detail == XCB_BUTTON_INDEX_5)) {
209 DLOG("Scrolling on a window decoration\n");
210 orientation_t orientation = (con->parent->layout == L_STACKED ? VERT : HORIZ);
211 /* Focus the currently focused container on the same level that the
212 * user scrolled on. e.g. the tabbed decoration contains
213 * "urxvt | i3: V[xterm geeqie] | firefox",
214 * focus is on the xterm, but the user scrolled on urxvt.
215 * The splitv container will be focused. */
216 Con *focused = con->parent;
217 focused = TAILQ_FIRST(&(focused->focus_head));
219 /* To prevent scrolling from going outside the container (see ticket
220 * #557), we first check if scrolling is possible at all. */
221 bool scroll_prev_possible = (TAILQ_PREV(focused, nodes_head, nodes) != NULL);
222 bool scroll_next_possible = (TAILQ_NEXT(focused, nodes) != NULL);
223 if (event->detail == XCB_BUTTON_INDEX_4 && scroll_prev_possible)
224 tree_next('p', orientation);
225 else if (event->detail == XCB_BUTTON_INDEX_5 && scroll_next_possible)
226 tree_next('n', orientation);
230 /* 2: focus this con. */
233 /* 3: For floating containers, we also want to raise them on click.
234 * We will skip handling events on floating cons in fullscreen mode */
235 Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
236 if (floatingcon != NULL && fs != con) {
237 floating_raise_con(floatingcon);
239 /* 4: floating_modifier plus left mouse button drags */
240 if (mod_pressed && event->detail == XCB_BUTTON_INDEX_1) {
241 floating_drag_window(floatingcon, event);
245 /* 5: resize (floating) if this was a click on the left/right/bottom
246 * border. also try resizing (tiling) if it was a click on the top
247 * border, but continue if that does not work */
248 if (mod_pressed && event->detail == 3) {
249 DLOG("floating resize due to floatingmodifier\n");
250 floating_resize_window(floatingcon, proportional, event);
254 if (!in_stacked && dest == CLICK_DECORATION) {
255 /* try tiling resize, but continue if it doesn’t work */
256 DLOG("tiling resize with fallback\n");
257 if (tiling_resize(con, event, dest))
261 if (dest == CLICK_BORDER) {
262 DLOG("floating resize due to border click\n");
263 floating_resize_window(floatingcon, proportional, event);
267 /* 6: dragging, if this was a click on a decoration (which did not lead
269 if (!in_stacked && dest == CLICK_DECORATION) {
270 floating_drag_window(floatingcon, event);
278 /* for stacked/tabbed cons, the resizing applies to the parent
283 /* 7: floating modifier pressed, initiate a resize */
284 if (dest == CLICK_INSIDE && mod_pressed && event->detail == 3) {
285 if (floating_mod_on_tiled_client(con, event))
288 /* 8: otherwise, check for border/decoration clicks and resize */
289 else if ((dest == CLICK_BORDER || dest == CLICK_DECORATION) &&
290 (event->detail == XCB_BUTTON_INDEX_1 ||
291 event->detail == XCB_BUTTON_INDEX_3)) {
292 DLOG("Trying to resize (tiling)\n");
293 tiling_resize(con, event, dest);
297 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
304 * The button press X callback. This function determines whether the floating
305 * modifier is pressed and where the user clicked (decoration, border, inside
308 * Then, route_click is called on the appropriate con.
311 int handle_button_press(xcb_button_press_event_t *event) {
313 DLOG("Button %d pressed on window 0x%08x\n", event->state, event->event);
315 last_timestamp = event->time;
317 const uint32_t mod = config.floating_modifier;
318 const bool mod_pressed = (mod != 0 && (event->state & mod) == mod);
319 DLOG("floating_mod = %d, detail = %d\n", mod_pressed, event->detail);
320 if ((con = con_by_window_id(event->event)))
321 return route_click(con, event, mod_pressed, CLICK_INSIDE);
323 if (!(con = con_by_frame_id(event->event))) {
324 /* If the root window is clicked, find the relevant output from the
325 * click coordinates and focus the output's active workspace. */
326 if (event->event == root) {
328 TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
329 if (con_is_internal(output) ||
330 !rect_contains(output->rect, event->event_x, event->event_y))
333 ws = TAILQ_FIRST(&(output_get_content(output)->focus_head));
334 if (ws != con_get_workspace(focused)) {
343 ELOG("Clicked into unknown window?!\n");
344 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
349 /* Check if the click was on the decoration of a child */
351 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
352 if (!rect_contains(child->deco_rect, event->event_x, event->event_y))
355 return route_click(child, event, mod_pressed, CLICK_DECORATION);
358 return route_click(con, event, mod_pressed, CLICK_BORDER);