git.sur5r.net Git - i3/i3/blob - src/click.c

   1 /*
   2  * vim:ts=8:expandtab
   3  *
   4  * i3 - an improved dynamic tiling window manager
   5  *
   6  * © 2009 Michael Stapelberg and contributors
   7  *
   8  * See file LICENSE for license information.
   9  *
  10  * src/click.c: Contains the handlers for button press (mouse click) events
  11  *              because they are quite large.
  12  *
  13  */
  14 #include <stdio.h>
  15 #include <assert.h>
  16 #include <string.h>
  17 #include <stdlib.h>
  18 #include <time.h>
  19 #include <stdbool.h>
  20
  21 #include <xcb/xcb.h>
  22 #include <xcb/xcb_atom.h>
  23 #include <xcb/xcb_icccm.h>
  24
  25 #include <X11/XKBlib.h>
  26
  27 #include "i3.h"
  28 #include "queue.h"
  29 #include "table.h"
  30 #include "config.h"
  31 #include "util.h"
  32 #include "xcb.h"
  33 #include "client.h"
  34 #include "workspace.h"
  35 #include "commands.h"
  36 #include "floating.h"
  37 #include "resize.h"
  38
  39 /*
  40  * Checks if the button press was on a stack window, handles focus setting and returns true
  41  * if so, or false otherwise.
  42  *
  43  */
  44 static bool button_press_stackwin(xcb_connection_t *conn, xcb_button_press_event_t *event) {
  45         struct Stack_Window *stack_win;
  46         SLIST_FOREACH(stack_win, &stack_wins, stack_windows) {
  47                 if (stack_win->window != event->event)
  48                         continue;
  49
  50                 /* A stack window was clicked, we check if it was button4 or button5
  51                    which are scroll up / scroll down. */
  52                 if (event->detail == XCB_BUTTON_INDEX_4 || event->detail == XCB_BUTTON_INDEX_5) {
  53                         direction_t direction = (event->detail == XCB_BUTTON_INDEX_4 ? D_UP : D_DOWN);
  54                         focus_window_in_container(conn, CUR_CELL, direction);
  55                         return true;
  56                 }
  57
  58                 /* It was no scrolling, so we calculate the destination client by
  59                    dividing the Y position of the event through the height of a window
  60                    decoration and then set the focus to this client. */
  61                 i3Font *font = load_font(conn, config.font);
  62                 int decoration_height = (font->height + 2 + 2);
  63                 int destination = (event->event_y / decoration_height),
  64                     c = 0,
  65                     num_clients = 0;
  66                 Client *client;
  67
  68                 CIRCLEQ_FOREACH(client, &(stack_win->container->clients), clients)
  69                         num_clients++;
  70
  71                 if (stack_win->container->mode == MODE_TABBED)
  72                         destination = (event->event_x / (stack_win->container->width / num_clients));
  73
  74                 LOG("Click on stack_win for client %d\n", destination);
  75                 CIRCLEQ_FOREACH(client, &(stack_win->container->clients), clients)
  76                         if (c++ == destination) {
  77                                 set_focus(conn, client, true);
  78                                 return true;
  79                         }
  80
  81                 return true;
  82         }
  83
  84         return false;
  85 }
  86
  87 /*
  88  * Checks if the button press was on a bar, switches to the workspace and returns true
  89  * if so, or false otherwise.
  90  *
  91  */
  92 static bool button_press_bar(xcb_connection_t *conn, xcb_button_press_event_t *event) {
  93         i3Screen *screen;
  94         TAILQ_FOREACH(screen, virtual_screens, screens) {
  95                 if (screen->bar != event->event)
  96                         continue;
  97
  98                 LOG("Click on a bar\n");
  99
 100                 /* Check if the button was one of button4 or button5 (scroll up / scroll down) */
 101                 if (event->detail == XCB_BUTTON_INDEX_4 || event->detail == XCB_BUTTON_INDEX_5) {
 102                         int add = (event->detail == XCB_BUTTON_INDEX_4 ? -1 : 1);
 103                         for (int i = c_ws->num + add; (i >= 0) && (i < 10); i += add)
 104                                 if (workspaces[i].screen == screen) {
 105                                         workspace_show(conn, i+1);
 106                                         return true;
 107                                 }
 108                         return true;
 109                 }
 110                 int drawn = 0;
 111                 /* Because workspaces can be on different screens, we need to loop
 112                    through all of them and decide to count it based on its ->screen */
 113                 for (int i = 0; i < 10; i++) {
 114                         if (workspaces[i].screen != screen)
 115                                 continue;
 116                         LOG("Checking if click was on workspace %d with drawn = %d, tw = %d\n",
 117                                         i, drawn, workspaces[i].text_width);
 118                         if (event->event_x > (drawn + 1) &&
 119                             event->event_x <= (drawn + 1 + workspaces[i].text_width + 5 + 5)) {
 120                                 workspace_show(conn, i+1);
 121                                 return true;
 122                         }
 123
 124                         drawn += workspaces[i].text_width + 5 + 5 + 2;
 125                 }
 126                 return true;
 127         }
 128
 129         return false;
 130 }
 131
 132 int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
 133         LOG("Button %d pressed\n", event->state);
 134         /* This was either a focus for a client’s parent (= titlebar)… */
 135         Client *client = table_get(&by_child, event->event);
 136         bool border_click = false;
 137         if (client == NULL) {
 138                 client = table_get(&by_parent, event->event);
 139                 border_click = true;
 140         }
 141         /* See if this was a click with the configured modifier. If so, we need
 142          * to move around the client if it was floating. if not, we just process
 143          * as usual. */
 144         if (config.floating_modifier != 0 &&
 145             (event->state & config.floating_modifier) != 0) {
 146                 if (client == NULL) {
 147                         LOG("Not handling, floating_modifier was pressed and no client found\n");
 148                         return 1;
 149                 }
 150                 if (client_is_floating(client)) {
 151                         LOG("button %d pressed\n", event->detail);
 152                         if (event->detail == 1) {
 153                                 LOG("left mouse button, dragging\n");
 154                                 floating_drag_window(conn, client, event);
 155                         } else if (event->detail == 3) {
 156                                 LOG("right mouse button\n");
 157                                 floating_resize_window(conn, client, event);
 158                         }
 159                         return 1;
 160                 } else {
 161                         /* The client is in tiling layout. We can still
 162                          * initiate a resize with the right mouse button,
 163                          * by chosing the border which is the most near one
 164                          * to the position of the mouse pointer */
 165                         if (event->detail == 3) {
 166                                 int to_right = client->rect.width - event->event_x,
 167                                     to_left = event->event_x,
 168                                     to_top = event->event_y,
 169                                     to_bottom = client->rect.height - event->event_y;
 170                                 resize_orientation_t orientation = O_VERTICAL;
 171                                 Container *con = client->container;
 172                                 int first = 0, second = 0;
 173
 174                                 LOG("click was %d px to the right, %d px to the left, %d px to top, %d px to bottom\n",
 175                                                 to_right, to_left, to_top, to_bottom);
 176
 177                                 if (to_right < to_left &&
 178                                     to_right < to_top &&
 179                                     to_right < to_bottom) {
 180                                         /* …right border */
 181                                         first = con->col + (con->colspan - 1);
 182                                         LOG("column %d\n", first);
 183
 184                                         if (!cell_exists(first, con->row) ||
 185                                             (first == (con->workspace->cols-1)))
 186                                                 return 1;
 187
 188                                         second = first + 1;
 189                                 } else if (to_left < to_right &&
 190                                            to_left < to_top &&
 191                                            to_left < to_bottom) {
 192                                         /* …left border */
 193                                         if (con->col == 0)
 194                                                 return 1;
 195
 196                                         first = con->col - 1;
 197                                         second = con->col;
 198                                 } else if (to_top < to_right &&
 199                                            to_top < to_left &&
 200                                            to_top < to_bottom) {
 201                                         /* This was a press on the top border */
 202                                         if (con->row == 0)
 203                                                 return 1;
 204                                         first = con->row - 1;
 205                                         second = con->row;
 206                                         orientation = O_HORIZONTAL;
 207                                 } else if (to_bottom < to_right &&
 208                                            to_bottom < to_left &&
 209                                            to_bottom < to_top) {
 210                                         /* …bottom border */
 211                                         first = con->row + (con->rowspan - 1);
 212                                         if (!cell_exists(con->col, first) ||
 213                                             (first == (con->workspace->rows-1)))
 214                                                 return 1;
 215
 216                                         second = first + 1;
 217                                         orientation = O_HORIZONTAL;
 218                                 }
 219
 220                                return resize_graphical_handler(conn, con->workspace, first, second, orientation, event);
 221                         }
 222                 }
 223         }
 224
 225         if (client == NULL) {
 226                 /* The client was neither on a client’s titlebar nor on a client itself, maybe on a stack_window? */
 227                 if (button_press_stackwin(conn, event))
 228                         return 1;
 229
 230                 /* Or on a bar? */
 231                 if (button_press_bar(conn, event))
 232                         return 1;
 233
 234                 LOG("Could not handle this button press\n");
 235                 return 1;
 236         }
 237
 238         /* Set focus in any case */
 239         set_focus(conn, client, true);
 240
 241         /* Let’s see if this was on the borders (= resize). If not, we’re done */
 242         LOG("press button on x=%d, y=%d\n", event->event_x, event->event_y);
 243         resize_orientation_t orientation = O_VERTICAL;
 244         Container *con = client->container;
 245         int first, second;
 246
 247         if (client->dock) {
 248                 LOG("dock. done.\n");
 249                 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
 250                 xcb_flush(conn);
 251                 return 1;
 252         }
 253
 254         LOG("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
 255
 256         /* Some clients (xfontsel for example) seem to pass clicks on their
 257          * window to the parent window, thus we receive an event here which in
 258          * reality is a border_click. Check for the position and fix state. */
 259         if (border_click &&
 260             event->event_x >= client->child_rect.x &&
 261             event->event_x <= (client->child_rect.x + client->child_rect.width) &&
 262             event->event_y >= client->child_rect.y &&
 263             event->event_y <= (client->child_rect.y + client->child_rect.height)) {
 264                 LOG("Fixing border_click = false because of click in child\n");
 265                 border_click = false;
 266         }
 267
 268         if (!border_click) {
 269                 LOG("client. done.\n");
 270                 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
 271                 /* Floating clients should be raised on click */
 272                 if (client_is_floating(client))
 273                         xcb_raise_window(conn, client->frame);
 274                 xcb_flush(conn);
 275                 return 1;
 276         }
 277
 278         /* Don’t handle events inside the titlebar, only borders are interesting */
 279         i3Font *font = load_font(conn, config.font);
 280         if (event->event_y >= 2 && event->event_y <= (font->height + 2 + 2)) {
 281                 LOG("click on titlebar\n");
 282
 283                 /* Floating clients can be dragged by grabbing their titlebar */
 284                 if (client_is_floating(client)) {
 285                         /* Firstly, we raise it. Maybe the user just wanted to raise it without grabbing */
 286                         xcb_raise_window(conn, client->frame);
 287                         xcb_flush(conn);
 288
 289                         floating_drag_window(conn, client, event);
 290                 }
 291                 return 1;
 292         }
 293
 294         if (client_is_floating(client))
 295                 return floating_border_click(conn, client, event);
 296
 297         if (event->event_y < 2) {
 298                 /* This was a press on the top border */
 299                 if (con->row == 0)
 300                         return 1;
 301                 first = con->row - 1;
 302                 second = con->row;
 303                 orientation = O_HORIZONTAL;
 304         } else if (event->event_y >= (client->rect.height - 2)) {
 305                 /* …bottom border */
 306                 first = con->row + (con->rowspan - 1);
 307                 if (!cell_exists(con->col, first) ||
 308                     (first == (con->workspace->rows-1)))
 309                         return 1;
 310
 311                 second = first + 1;
 312                 orientation = O_HORIZONTAL;
 313         } else if (event->event_x <= 2) {
 314                 /* …left border */
 315                 if (con->col == 0)
 316                         return 1;
 317
 318                 first = con->col - 1;
 319                 second = con->col;
 320         } else if (event->event_x > 2) {
 321                 /* …right border */
 322                 first = con->col + (con->colspan - 1);
 323                 LOG("column %d\n", first);
 324
 325                 if (!cell_exists(first, con->row) ||
 326                     (first == (con->workspace->cols-1)))
 327                         return 1;
 328
 329                 second = first + 1;
 330         }
 331
 332         return resize_graphical_handler(conn, con->workspace, first, second, orientation, event);
 333 }