2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
6 * © 2009-2011 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
10 * src/click.c: Contains the handlers for button press (mouse click) events
11 * because they are quite large.
17 #include <xcb/xcb_atom.h>
18 #include <xcb/xcb_icccm.h>
20 #include <X11/XKBlib.h>
25 typedef enum { CLICK_BORDER = 0, CLICK_DECORATION = 1, CLICK_INSIDE = 2 } click_destination_t;
28 * Finds the correct pair of first/second cons between the resize will take
29 * place according to the passed border position (top, left, right, bottom),
30 * then calls resize_graphical_handler().
33 static bool tiling_resize_for_border(Con *con, border_t border, xcb_button_press_event_t *event) {
34 DLOG("border = %d\n", border);
35 char way = (border == BORDER_TOP || border == BORDER_LEFT ? 'p' : 'n');
36 orientation_t orientation = (border == BORDER_TOP || border == BORDER_BOTTOM ? VERT : HORIZ);
38 /* look for a parent container with the right orientation */
39 Con *first = NULL, *second = NULL;
40 Con *resize_con = con;
41 while (resize_con->type != CT_WORKSPACE &&
42 resize_con->parent->orientation != orientation)
43 resize_con = resize_con->parent;
44 if (resize_con->type != CT_WORKSPACE &&
45 resize_con->parent->orientation == orientation) {
47 second = (way == 'n') ? TAILQ_NEXT(first, nodes) : TAILQ_PREV(first, nodes_head, nodes);
48 if (second == TAILQ_END(&(first->nodes_head))) {
51 else if (way == 'p') {
58 if (first == NULL || second == NULL) {
59 DLOG("Resize not possible\n");
63 assert(first != second);
64 assert(first->parent == second->parent);
65 resize_graphical_handler(first, second, orientation, event);
68 DLOG("After resize handler, rendering\n");
74 * Called when the user clicks using the floating_modifier, but the client is in
77 * Returns false if it does not do anything (that is, the click should be sent
81 static bool floating_mod_on_tiled_client(Con *con, xcb_button_press_event_t *event) {
82 /* The client is in tiling layout. We can still initiate a resize with the
83 * right mouse button, by chosing the border which is the most near one to
84 * the position of the mouse pointer */
85 int to_right = con->rect.width - event->event_x,
86 to_left = event->event_x,
87 to_top = event->event_y,
88 to_bottom = con->rect.height - event->event_y;
90 DLOG("click was %d px to the right, %d px to the left, %d px to top, %d px to bottom\n",
91 to_right, to_left, to_top, to_bottom);
93 if (to_right < to_left &&
96 return tiling_resize_for_border(con, BORDER_RIGHT, event);
98 if (to_left < to_right &&
101 return tiling_resize_for_border(con, BORDER_LEFT, event);
103 if (to_top < to_right &&
106 return tiling_resize_for_border(con, BORDER_TOP, event);
108 if (to_bottom < to_right &&
109 to_bottom < to_left &&
111 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
117 * Finds out which border was clicked on and calls tiling_resize_for_border().
120 static bool tiling_resize(Con *con, xcb_button_press_event_t *event, click_destination_t dest) {
121 /* check if this was a click on the window border (and on which one) */
122 Rect bsr = con_border_style_rect(con);
123 DLOG("BORDER x = %d, y = %d for con %p, window 0x%08x\n",
124 event->event_x, event->event_y, con, event->event);
125 DLOG("checks for right >= %d\n", con->window_rect.x + con->window_rect.width);
126 if (dest == CLICK_DECORATION)
127 return tiling_resize_for_border(con, BORDER_TOP, event);
129 if (event->event_x >= 0 && event->event_x <= bsr.x &&
130 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
131 return tiling_resize_for_border(con, BORDER_LEFT, event);
133 if (event->event_x >= (con->window_rect.x + con->window_rect.width) &&
134 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
135 return tiling_resize_for_border(con, BORDER_RIGHT, event);
137 if (event->event_y >= (con->window_rect.y + con->window_rect.height))
138 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
144 * Being called by handle_button_press, this function calls the appropriate
145 * functions for resizing/dragging.
148 static int route_click(Con *con, xcb_button_press_event_t *event, bool mod_pressed, click_destination_t dest) {
149 DLOG("--> click properties: mod = %d, destination = %d\n", mod_pressed, dest);
150 DLOG("--> OUTCOME = %p\n", con);
151 DLOG("type = %d, name = %s\n", con->type, con->name);
153 /* don’t handle dockarea cons, they must not be focused */
154 if (con->parent->type == CT_DOCKAREA)
157 /* get the floating con */
158 Con *floatingcon = con_inside_floating(con);
159 const bool proportional = (event->state & BIND_SHIFT);
161 /* 1: focus this con */
164 const bool in_stacked = (con->parent->layout == L_STACKED || con->parent->layout == L_TABBED);
166 /* 2: for floating containers, we also want to raise them on click */
167 if (floatingcon != NULL) {
168 floating_raise_con(floatingcon);
170 /* 3: floating_modifier plus left mouse button drags */
171 if (mod_pressed && event->detail == 1) {
172 floating_drag_window(floatingcon, event);
176 /* 3: resize (floating) if this was a click on the left/right/bottom
177 * border. also try resizing (tiling) if it was a click on the top
178 * border, but continue if that does not work */
179 if (mod_pressed && event->detail == 3) {
180 DLOG("floating resize due to floatingmodifier\n");
181 floating_resize_window(floatingcon, proportional, event);
185 if (!in_stacked && dest == CLICK_DECORATION) {
186 /* try tiling resize, but continue if it doesn’t work */
187 DLOG("tiling resize with fallback\n");
188 if (tiling_resize(con, event, dest))
192 if (dest == CLICK_BORDER) {
193 DLOG("floating resize due to border click\n");
194 floating_resize_window(floatingcon, proportional, event);
198 /* 4: dragging, if this was a click on a decoration (which did not lead
200 if (!in_stacked && dest == CLICK_DECORATION) {
201 floating_drag_window(floatingcon, event);
209 /* for stacked/tabbed cons, floating modifier + right click resizes the
210 * parent container */
211 if (mod_pressed && event->detail == 3)
212 if (floating_mod_on_tiled_client(con->parent, event))
217 /* 3: floating modifier pressed, initiate a resize */
218 if (mod_pressed && event->detail == 3) {
219 if (floating_mod_on_tiled_client(con, event))
222 /* 4: otherwise, check for border/decoration clicks and resize */
223 else if (dest == CLICK_BORDER || dest == CLICK_DECORATION) {
224 DLOG("Should trry resizing (tiling)\n");
225 tiling_resize(con, event, dest);
229 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
236 * The button press X callback. This function determines whether the floating
237 * modifier is pressed and where the user clicked (decoration, border, inside
240 * Then, route_click is called on the appropriate con.
243 int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
245 DLOG("Button %d pressed on window 0x%08x\n", event->state, event->event);
247 const uint32_t mod = config.floating_modifier;
248 bool mod_pressed = (mod != 0 && (event->state & mod) == mod);
249 DLOG("floating_mod = %d, detail = %d\n", mod_pressed, event->detail);
250 if ((con = con_by_window_id(event->event)))
251 return route_click(con, event, mod_pressed, CLICK_INSIDE);
253 if (!(con = con_by_frame_id(event->event))) {
254 ELOG("Clicked into unknown window?!\n");
255 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
260 /* Check if the click was on the decoration of a child */
262 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
263 if (!rect_contains(child->deco_rect, event->event_x, event->event_y))
266 return route_click(child, event, mod_pressed, CLICK_DECORATION);
269 return route_click(con, event, mod_pressed, CLICK_BORDER);