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\n", border);
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 if (resize_con->type != CT_WORKSPACE &&
42 resize_con->type != CT_FLOATING_CON &&
43 resize_con->parent->orientation == orientation) {
45 second = (way == 'n') ? TAILQ_NEXT(first, nodes) : TAILQ_PREV(first, nodes_head, nodes);
46 if (second == TAILQ_END(&(first->nodes_head))) {
49 else if (way == 'p') {
56 if (first == NULL || second == NULL) {
57 DLOG("Resize not possible\n");
61 assert(first != second);
62 assert(first->parent == second->parent);
63 resize_graphical_handler(first, second, orientation, event);
66 DLOG("After resize handler, rendering\n");
72 * Called when the user clicks using the floating_modifier, but the client is in
75 * Returns false if it does not do anything (that is, the click should be sent
79 static bool floating_mod_on_tiled_client(Con *con, xcb_button_press_event_t *event) {
80 /* The client is in tiling layout. We can still initiate a resize with the
81 * right mouse button, by chosing the border which is the most near one to
82 * the position of the mouse pointer */
83 int to_right = con->rect.width - event->event_x,
84 to_left = event->event_x,
85 to_top = event->event_y,
86 to_bottom = con->rect.height - event->event_y;
88 DLOG("click was %d px to the right, %d px to the left, %d px to top, %d px to bottom\n",
89 to_right, to_left, to_top, to_bottom);
91 if (to_right < to_left &&
94 return tiling_resize_for_border(con, BORDER_RIGHT, event);
96 if (to_left < to_right &&
99 return tiling_resize_for_border(con, BORDER_LEFT, event);
101 if (to_top < to_right &&
104 return tiling_resize_for_border(con, BORDER_TOP, event);
106 if (to_bottom < to_right &&
107 to_bottom < to_left &&
109 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
115 * Finds out which border was clicked on and calls tiling_resize_for_border().
118 static bool tiling_resize(Con *con, xcb_button_press_event_t *event, click_destination_t dest) {
119 /* check if this was a click on the window border (and on which one) */
120 Rect bsr = con_border_style_rect(con);
121 DLOG("BORDER x = %d, y = %d for con %p, window 0x%08x\n",
122 event->event_x, event->event_y, con, event->event);
123 DLOG("checks for right >= %d\n", con->window_rect.x + con->window_rect.width);
124 if (dest == CLICK_DECORATION)
125 return tiling_resize_for_border(con, BORDER_TOP, event);
127 if (event->event_x >= 0 && event->event_x <= bsr.x &&
128 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
129 return tiling_resize_for_border(con, BORDER_LEFT, event);
131 if (event->event_x >= (con->window_rect.x + con->window_rect.width) &&
132 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
133 return tiling_resize_for_border(con, BORDER_RIGHT, event);
135 if (event->event_y >= (con->window_rect.y + con->window_rect.height))
136 return tiling_resize_for_border(con, BORDER_BOTTOM, event);
142 * Being called by handle_button_press, this function calls the appropriate
143 * functions for resizing/dragging.
146 static int route_click(Con *con, xcb_button_press_event_t *event, bool mod_pressed, click_destination_t dest) {
147 DLOG("--> click properties: mod = %d, destination = %d\n", mod_pressed, dest);
148 DLOG("--> OUTCOME = %p\n", con);
149 DLOG("type = %d, name = %s\n", con->type, con->name);
151 /* don’t handle dockarea cons, they must not be focused */
152 if (con->parent->type == CT_DOCKAREA)
155 /* get the floating con */
156 Con *floatingcon = con_inside_floating(con);
157 const bool proportional = (event->state & BIND_SHIFT);
158 const bool in_stacked = (con->parent->layout == L_STACKED || con->parent->layout == L_TABBED);
160 /* 1: see if the user scrolled on the decoration of a stacked/tabbed con */
162 dest == CLICK_DECORATION &&
163 (event->detail == XCB_BUTTON_INDEX_4 ||
164 event->detail == XCB_BUTTON_INDEX_5)) {
165 DLOG("Scrolling on a window decoration\n");
166 orientation_t orientation = (con->parent->layout == L_STACKED ? VERT : HORIZ);
167 if (event->detail == XCB_BUTTON_INDEX_4)
168 tree_next('p', orientation);
169 else tree_next('n', orientation);
173 /* 2: focus this con */
176 /* 3: For floating containers, we also want to raise them on click.
177 * We will skip handling events on floating cons in fullscreen mode */
178 Con *ws = con_get_workspace(con);
179 Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
180 if (floatingcon != NULL && fs == NULL) {
181 floating_raise_con(floatingcon);
183 /* 4: floating_modifier plus left mouse button drags */
184 if (mod_pressed && event->detail == 1) {
185 floating_drag_window(floatingcon, event);
189 /* 5: resize (floating) if this was a click on the left/right/bottom
190 * border. also try resizing (tiling) if it was a click on the top
191 * border, but continue if that does not work */
192 if (mod_pressed && event->detail == 3) {
193 DLOG("floating resize due to floatingmodifier\n");
194 floating_resize_window(floatingcon, proportional, event);
198 if (!in_stacked && dest == CLICK_DECORATION) {
199 /* try tiling resize, but continue if it doesn’t work */
200 DLOG("tiling resize with fallback\n");
201 if (tiling_resize(con, event, dest))
205 if (dest == CLICK_BORDER) {
206 DLOG("floating resize due to border click\n");
207 floating_resize_window(floatingcon, proportional, event);
211 /* 6: dragging, if this was a click on a decoration (which did not lead
213 if (!in_stacked && dest == CLICK_DECORATION) {
214 floating_drag_window(floatingcon, event);
222 /* for stacked/tabbed cons, the resizing applies to the parent
227 /* 7: floating modifier pressed, initiate a resize */
228 if (mod_pressed && event->detail == 3) {
229 if (floating_mod_on_tiled_client(con, event))
232 /* 8: otherwise, check for border/decoration clicks and resize */
233 else if (dest == CLICK_BORDER || dest == CLICK_DECORATION) {
234 DLOG("Trying to resize (tiling)\n");
235 tiling_resize(con, event, dest);
239 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
246 * The button press X callback. This function determines whether the floating
247 * modifier is pressed and where the user clicked (decoration, border, inside
250 * Then, route_click is called on the appropriate con.
253 int handle_button_press(xcb_button_press_event_t *event) {
255 DLOG("Button %d pressed on window 0x%08x\n", event->state, event->event);
257 last_timestamp = event->time;
259 const uint32_t mod = config.floating_modifier;
260 bool mod_pressed = (mod != 0 && (event->state & mod) == mod);
261 DLOG("floating_mod = %d, detail = %d\n", mod_pressed, event->detail);
262 if ((con = con_by_window_id(event->event)))
263 return route_click(con, event, mod_pressed, CLICK_INSIDE);
265 if (!(con = con_by_frame_id(event->event))) {
266 ELOG("Clicked into unknown window?!\n");
267 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
272 /* Check if the click was on the decoration of a child */
274 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
275 if (!rect_contains(child->deco_rect, event->event_x, event->event_y))
278 return route_click(child, event, mod_pressed, CLICK_DECORATION);
281 return route_click(con, event, mod_pressed, CLICK_BORDER);