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_atom.h>
18 #include <xcb/xcb_icccm.h>
20 #include <X11/XKBlib.h>
22 typedef enum { CLICK_BORDER = 0, CLICK_DECORATION = 1, CLICK_INSIDE = 2 } click_destination_t;
25 * Finds the correct pair of first/second cons between the resize will take
26 * place according to the passed border position (top, left, right, bottom),
27 * then calls resize_graphical_handler().
30 static bool tiling_resize_for_border(Con *con, border_t border, xcb_button_press_event_t *event) {
31 DLOG("border = %d, con = %p\n", border, con);
32 char way = (border == BORDER_TOP || border == BORDER_LEFT ? 'p' : 'n');
33 orientation_t orientation = (border == BORDER_TOP || border == BORDER_BOTTOM ? VERT : HORIZ);
35 /* look for a parent container with the right orientation */
36 Con *first = NULL, *second = NULL;
37 Con *resize_con = con;
38 while (resize_con->type != CT_WORKSPACE &&
39 resize_con->type != CT_FLOATING_CON &&
40 con_orientation(resize_con->parent) != orientation)
41 resize_con = resize_con->parent;
43 DLOG("resize_con = %p\n", resize_con);
44 if (resize_con->type != CT_WORKSPACE &&
45 resize_con->type != CT_FLOATING_CON &&
46 con_orientation(resize_con->parent) == orientation) {
48 second = (way == 'n') ? TAILQ_NEXT(first, nodes) : TAILQ_PREV(first, nodes_head, nodes);
49 if (second == TAILQ_END(&(first->nodes_head))) {
52 else if (way == 'p') {
57 DLOG("first = %p, second = %p, resize_con = %p\n",
58 first, second, resize_con);
61 if (first == NULL || second == NULL) {
62 DLOG("Resize not possible\n");
66 assert(first != second);
67 assert(first->parent == second->parent);
69 /* We modify the X/Y position in the event so that the divider line is at
70 * the actual position of the border, not at the position of the click. */
71 if (orientation == HORIZ)
72 event->root_x = second->rect.x;
73 else event->root_y = second->rect.y;
75 resize_graphical_handler(first, second, orientation, event);
77 DLOG("After resize handler, rendering\n");
83 * Called when the user clicks using the floating_modifier, but the client is in
86 * Returns false if it does not do anything (that is, the click should be sent
90 static bool floating_mod_on_tiled_client(Con *con, xcb_button_press_event_t *event) {
91 /* The client is in tiling layout. We can still initiate a resize with the
92 * right mouse button, by chosing the border which is the most near one to
93 * the position of the mouse pointer */
94 int to_right = con->rect.width - event->event_x,
95 to_left = event->event_x,
96 to_top = event->event_y,
97 to_bottom = con->rect.height - event->event_y;
99 DLOG("click was %d px to the right, %d px to the left, %d px to top, %d px to bottom\n",
100 to_right, to_left, to_top, to_bottom);
102 if (to_right < to_left &&
104 to_right < to_bottom)
105 return tiling_resize_for_border(con, BORDER_RIGHT, event);
107 if (to_left < to_right &&
110 return tiling_resize_for_border(con, BORDER_LEFT, event);
112 if (to_top < to_right &&
115 return tiling_resize_for_border(con, BORDER_TOP, event);
117 if (to_bottom < to_right &&
118 to_bottom < to_left &&
120 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
126 * Finds out which border was clicked on and calls tiling_resize_for_border().
129 static bool tiling_resize(Con *con, xcb_button_press_event_t *event, const click_destination_t dest) {
130 /* check if this was a click on the window border (and on which one) */
131 Rect bsr = con_border_style_rect(con);
132 DLOG("BORDER x = %d, y = %d for con %p, window 0x%08x\n",
133 event->event_x, event->event_y, con, event->event);
134 DLOG("checks for right >= %d\n", con->window_rect.x + con->window_rect.width);
135 if (dest == CLICK_DECORATION) {
136 /* The user clicked on a window decoration. We ignore the following case:
137 * The container is a h-split, tabbed or stacked container with > 1
138 * window. Decorations will end up next to each other and the user
139 * expects to switch to a window by clicking on its decoration. */
141 /* Since the container might either be the child *or* already a split
142 * container (in the case of a nested split container), we need to make
143 * sure that we are dealing with the split container here. */
144 Con *check_con = con;
145 if (con_is_leaf(check_con) && check_con->parent->type == CT_CON)
146 check_con = check_con->parent;
148 if ((check_con->layout == L_STACKED ||
149 check_con->layout == L_TABBED ||
150 con_orientation(check_con) == HORIZ) &&
151 con_num_children(check_con) > 1) {
152 DLOG("Not handling this resize, this container has > 1 child.\n");
155 return tiling_resize_for_border(con, BORDER_TOP, event);
158 if (event->event_x >= 0 && event->event_x <= bsr.x &&
159 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
160 return tiling_resize_for_border(con, BORDER_LEFT, event);
162 if (event->event_x >= (con->window_rect.x + con->window_rect.width) &&
163 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
164 return tiling_resize_for_border(con, BORDER_RIGHT, event);
166 if (event->event_y >= (con->window_rect.y + con->window_rect.height))
167 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
173 * Being called by handle_button_press, this function calls the appropriate
174 * functions for resizing/dragging.
177 static int route_click(Con *con, xcb_button_press_event_t *event, const bool mod_pressed, const click_destination_t dest) {
178 DLOG("--> click properties: mod = %d, destination = %d\n", mod_pressed, dest);
179 DLOG("--> OUTCOME = %p\n", con);
180 DLOG("type = %d, name = %s\n", con->type, con->name);
182 /* don’t handle dockarea cons, they must not be focused */
183 if (con->parent->type == CT_DOCKAREA)
186 /* get the floating con */
187 Con *floatingcon = con_inside_floating(con);
188 const bool proportional = (event->state & BIND_SHIFT);
189 const bool in_stacked = (con->parent->layout == L_STACKED || con->parent->layout == L_TABBED);
191 /* 1: see if the user scrolled on the decoration of a stacked/tabbed con */
193 dest == CLICK_DECORATION &&
194 (event->detail == XCB_BUTTON_INDEX_4 ||
195 event->detail == XCB_BUTTON_INDEX_5)) {
196 DLOG("Scrolling on a window decoration\n");
197 orientation_t orientation = (con->parent->layout == L_STACKED ? VERT : HORIZ);
198 /* To prevent scrolling from going outside the container (see ticket
199 * #557), we first check if scrolling is possible at all. */
200 Con *focused = con_descend_focused(con->parent);
201 bool scroll_prev_possible = (TAILQ_PREV(focused, nodes_head, nodes) != NULL);
202 bool scroll_next_possible = (TAILQ_NEXT(focused, nodes) != NULL);
203 if (event->detail == XCB_BUTTON_INDEX_4 && scroll_prev_possible)
204 tree_next('p', orientation);
205 else if (event->detail == XCB_BUTTON_INDEX_5 && scroll_next_possible)
206 tree_next('n', orientation);
210 /* 2: focus this con. If the workspace is on another output we need to
211 * do a workspace_show in order for i3bar (and others) to notice the
212 * change in workspace. */
213 Con *ws = con_get_workspace(con);
214 Con *focused_workspace = con_get_workspace(focused);
216 if (ws != focused_workspace)
218 focused_id = XCB_NONE;
221 /* 3: For floating containers, we also want to raise them on click.
222 * We will skip handling events on floating cons in fullscreen mode */
223 Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
224 if (floatingcon != NULL && fs == NULL) {
225 floating_raise_con(floatingcon);
227 /* 4: floating_modifier plus left mouse button drags */
228 if (mod_pressed && event->detail == XCB_BUTTON_INDEX_1) {
229 floating_drag_window(floatingcon, event);
233 /* 5: resize (floating) if this was a click on the left/right/bottom
234 * border. also try resizing (tiling) if it was a click on the top
235 * border, but continue if that does not work */
236 if (mod_pressed && event->detail == 3) {
237 DLOG("floating resize due to floatingmodifier\n");
238 floating_resize_window(floatingcon, proportional, event);
242 if (!in_stacked && dest == CLICK_DECORATION) {
243 /* try tiling resize, but continue if it doesn’t work */
244 DLOG("tiling resize with fallback\n");
245 if (tiling_resize(con, event, dest))
249 if (dest == CLICK_BORDER) {
250 DLOG("floating resize due to border click\n");
251 floating_resize_window(floatingcon, proportional, event);
255 /* 6: dragging, if this was a click on a decoration (which did not lead
257 if (!in_stacked && dest == CLICK_DECORATION) {
258 floating_drag_window(floatingcon, event);
266 /* for stacked/tabbed cons, the resizing applies to the parent
271 /* 7: floating modifier pressed, initiate a resize */
272 if (dest == CLICK_INSIDE && mod_pressed && event->detail == 3) {
273 if (floating_mod_on_tiled_client(con, event))
276 /* 8: otherwise, check for border/decoration clicks and resize */
277 else if ((dest == CLICK_BORDER || dest == CLICK_DECORATION) &&
278 (event->detail == XCB_BUTTON_INDEX_1 ||
279 event->detail == XCB_BUTTON_INDEX_3)) {
280 DLOG("Trying to resize (tiling)\n");
281 tiling_resize(con, event, dest);
285 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
292 * The button press X callback. This function determines whether the floating
293 * modifier is pressed and where the user clicked (decoration, border, inside
296 * Then, route_click is called on the appropriate con.
299 int handle_button_press(xcb_button_press_event_t *event) {
301 DLOG("Button %d pressed on window 0x%08x\n", event->state, event->event);
303 last_timestamp = event->time;
305 const uint32_t mod = config.floating_modifier;
306 const bool mod_pressed = (mod != 0 && (event->state & mod) == mod);
307 DLOG("floating_mod = %d, detail = %d\n", mod_pressed, event->detail);
308 if ((con = con_by_window_id(event->event)))
309 return route_click(con, event, mod_pressed, CLICK_INSIDE);
311 if (!(con = con_by_frame_id(event->event))) {
312 ELOG("Clicked into unknown window?!\n");
313 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
318 /* Check if the click was on the decoration of a child */
320 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
321 if (!rect_contains(child->deco_rect, event->event_x, event->event_y))
324 return route_click(child, event, mod_pressed, CLICK_DECORATION);
327 return route_click(con, event, mod_pressed, CLICK_BORDER);