i3
|
00001 /* 00002 * vim:ts=4:sw=4:expandtab 00003 * 00004 * i3 - an improved dynamic tiling window manager 00005 * 00006 * © 2009-2011 Michael Stapelberg and contributors 00007 * 00008 * See file LICENSE for license information. 00009 * 00010 * src/click.c: Contains the handlers for button press (mouse click) events 00011 * because they are quite large. 00012 * 00013 */ 00014 #include <time.h> 00015 #include <math.h> 00016 00017 #include <xcb/xcb_atom.h> 00018 #include <xcb/xcb_icccm.h> 00019 00020 #include <X11/XKBlib.h> 00021 00022 #include "all.h" 00023 00024 00025 typedef enum { CLICK_BORDER = 0, CLICK_DECORATION = 1, CLICK_INSIDE = 2 } click_destination_t; 00026 00027 /* 00028 * Finds the correct pair of first/second cons between the resize will take 00029 * place according to the passed border position (top, left, right, bottom), 00030 * then calls resize_graphical_handler(). 00031 * 00032 */ 00033 static bool tiling_resize_for_border(Con *con, border_t border, xcb_button_press_event_t *event) { 00034 DLOG("border = %d\n", border); 00035 char way = (border == BORDER_TOP || border == BORDER_LEFT ? 'p' : 'n'); 00036 orientation_t orientation = (border == BORDER_TOP || border == BORDER_BOTTOM ? VERT : HORIZ); 00037 00038 /* look for a parent container with the right orientation */ 00039 Con *first = NULL, *second = NULL; 00040 Con *resize_con = con; 00041 while (resize_con->type != CT_WORKSPACE && 00042 resize_con->type != CT_FLOATING_CON && 00043 resize_con->parent->orientation != orientation) 00044 resize_con = resize_con->parent; 00045 00046 if (resize_con->type != CT_WORKSPACE && 00047 resize_con->type != CT_FLOATING_CON && 00048 resize_con->parent->orientation == orientation) { 00049 first = resize_con; 00050 second = (way == 'n') ? TAILQ_NEXT(first, nodes) : TAILQ_PREV(first, nodes_head, nodes); 00051 if (second == TAILQ_END(&(first->nodes_head))) { 00052 second = NULL; 00053 } 00054 else if (way == 'p') { 00055 Con *tmp = first; 00056 first = second; 00057 second = tmp; 00058 } 00059 } 00060 00061 if (first == NULL || second == NULL) { 00062 DLOG("Resize not possible\n"); 00063 return false; 00064 } 00065 else { 00066 assert(first != second); 00067 assert(first->parent == second->parent); 00068 resize_graphical_handler(first, second, orientation, event); 00069 } 00070 00071 DLOG("After resize handler, rendering\n"); 00072 tree_render(); 00073 return true; 00074 } 00075 00076 /* 00077 * Called when the user clicks using the floating_modifier, but the client is in 00078 * tiling layout. 00079 * 00080 * Returns false if it does not do anything (that is, the click should be sent 00081 * to the client). 00082 * 00083 */ 00084 static bool floating_mod_on_tiled_client(Con *con, xcb_button_press_event_t *event) { 00085 /* The client is in tiling layout. We can still initiate a resize with the 00086 * right mouse button, by chosing the border which is the most near one to 00087 * the position of the mouse pointer */ 00088 int to_right = con->rect.width - event->event_x, 00089 to_left = event->event_x, 00090 to_top = event->event_y, 00091 to_bottom = con->rect.height - event->event_y; 00092 00093 DLOG("click was %d px to the right, %d px to the left, %d px to top, %d px to bottom\n", 00094 to_right, to_left, to_top, to_bottom); 00095 00096 if (to_right < to_left && 00097 to_right < to_top && 00098 to_right < to_bottom) 00099 return tiling_resize_for_border(con, BORDER_RIGHT, event); 00100 00101 if (to_left < to_right && 00102 to_left < to_top && 00103 to_left < to_bottom) 00104 return tiling_resize_for_border(con, BORDER_LEFT, event); 00105 00106 if (to_top < to_right && 00107 to_top < to_left && 00108 to_top < to_bottom) 00109 return tiling_resize_for_border(con, BORDER_TOP, event); 00110 00111 if (to_bottom < to_right && 00112 to_bottom < to_left && 00113 to_bottom < to_top) 00114 return tiling_resize_for_border(con, BORDER_BOTTOM, event); 00115 00116 return false; 00117 } 00118 00119 /* 00120 * Finds out which border was clicked on and calls tiling_resize_for_border(). 00121 * 00122 */ 00123 static bool tiling_resize(Con *con, xcb_button_press_event_t *event, click_destination_t dest) { 00124 /* check if this was a click on the window border (and on which one) */ 00125 Rect bsr = con_border_style_rect(con); 00126 DLOG("BORDER x = %d, y = %d for con %p, window 0x%08x\n", 00127 event->event_x, event->event_y, con, event->event); 00128 DLOG("checks for right >= %d\n", con->window_rect.x + con->window_rect.width); 00129 if (dest == CLICK_DECORATION) 00130 return tiling_resize_for_border(con, BORDER_TOP, event); 00131 00132 if (event->event_x >= 0 && event->event_x <= bsr.x && 00133 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height) 00134 return tiling_resize_for_border(con, BORDER_LEFT, event); 00135 00136 if (event->event_x >= (con->window_rect.x + con->window_rect.width) && 00137 event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height) 00138 return tiling_resize_for_border(con, BORDER_RIGHT, event); 00139 00140 if (event->event_y >= (con->window_rect.y + con->window_rect.height)) 00141 return tiling_resize_for_border(con, BORDER_BOTTOM, event); 00142 00143 return false; 00144 } 00145 00146 /* 00147 * Being called by handle_button_press, this function calls the appropriate 00148 * functions for resizing/dragging. 00149 * 00150 */ 00151 static int route_click(Con *con, xcb_button_press_event_t *event, bool mod_pressed, click_destination_t dest) { 00152 DLOG("--> click properties: mod = %d, destination = %d\n", mod_pressed, dest); 00153 DLOG("--> OUTCOME = %p\n", con); 00154 DLOG("type = %d, name = %s\n", con->type, con->name); 00155 00156 /* don’t handle dockarea cons, they must not be focused */ 00157 if (con->parent->type == CT_DOCKAREA) 00158 goto done; 00159 00160 /* get the floating con */ 00161 Con *floatingcon = con_inside_floating(con); 00162 const bool proportional = (event->state & BIND_SHIFT); 00163 const bool in_stacked = (con->parent->layout == L_STACKED || con->parent->layout == L_TABBED); 00164 00165 /* 1: see if the user scrolled on the decoration of a stacked/tabbed con */ 00166 if (in_stacked && 00167 dest == CLICK_DECORATION && 00168 (event->detail == XCB_BUTTON_INDEX_4 || 00169 event->detail == XCB_BUTTON_INDEX_5)) { 00170 DLOG("Scrolling on a window decoration\n"); 00171 orientation_t orientation = (con->parent->layout == L_STACKED ? VERT : HORIZ); 00172 if (event->detail == XCB_BUTTON_INDEX_4) 00173 tree_next('p', orientation); 00174 else tree_next('n', orientation); 00175 goto done; 00176 } 00177 00178 /* 2: focus this con */ 00179 con_focus(con); 00180 00181 /* 3: for floating containers, we also want to raise them on click */ 00182 if (floatingcon != NULL) { 00183 floating_raise_con(floatingcon); 00184 00185 /* 4: floating_modifier plus left mouse button drags */ 00186 if (mod_pressed && event->detail == 1) { 00187 floating_drag_window(floatingcon, event); 00188 return 1; 00189 } 00190 00191 /* 5: resize (floating) if this was a click on the left/right/bottom 00192 * border. also try resizing (tiling) if it was a click on the top 00193 * border, but continue if that does not work */ 00194 if (mod_pressed && event->detail == 3) { 00195 DLOG("floating resize due to floatingmodifier\n"); 00196 floating_resize_window(floatingcon, proportional, event); 00197 return 1; 00198 } 00199 00200 if (!in_stacked && dest == CLICK_DECORATION) { 00201 /* try tiling resize, but continue if it doesn’t work */ 00202 DLOG("tiling resize with fallback\n"); 00203 if (tiling_resize(con, event, dest)) 00204 goto done; 00205 } 00206 00207 if (dest == CLICK_BORDER) { 00208 DLOG("floating resize due to border click\n"); 00209 floating_resize_window(floatingcon, proportional, event); 00210 return 1; 00211 } 00212 00213 /* 6: dragging, if this was a click on a decoration (which did not lead 00214 * to a resize) */ 00215 if (!in_stacked && dest == CLICK_DECORATION) { 00216 floating_drag_window(floatingcon, event); 00217 return 1; 00218 } 00219 00220 goto done; 00221 } 00222 00223 if (in_stacked) { 00224 /* for stacked/tabbed cons, the resizing applies to the parent 00225 * container */ 00226 con = con->parent; 00227 } 00228 00229 /* 7: floating modifier pressed, initiate a resize */ 00230 if (mod_pressed && event->detail == 3) { 00231 if (floating_mod_on_tiled_client(con, event)) 00232 return 1; 00233 } 00234 /* 8: otherwise, check for border/decoration clicks and resize */ 00235 else if (dest == CLICK_BORDER || dest == CLICK_DECORATION) { 00236 DLOG("Trying to resize (tiling)\n"); 00237 tiling_resize(con, event, dest); 00238 } 00239 00240 done: 00241 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time); 00242 xcb_flush(conn); 00243 tree_render(); 00244 return 0; 00245 } 00246 00247 /* 00248 * The button press X callback. This function determines whether the floating 00249 * modifier is pressed and where the user clicked (decoration, border, inside 00250 * the window). 00251 * 00252 * Then, route_click is called on the appropriate con. 00253 * 00254 */ 00255 int handle_button_press(xcb_button_press_event_t *event) { 00256 Con *con; 00257 DLOG("Button %d pressed on window 0x%08x\n", event->state, event->event); 00258 00259 const uint32_t mod = config.floating_modifier; 00260 bool mod_pressed = (mod != 0 && (event->state & mod) == mod); 00261 DLOG("floating_mod = %d, detail = %d\n", mod_pressed, event->detail); 00262 if ((con = con_by_window_id(event->event))) 00263 return route_click(con, event, mod_pressed, CLICK_INSIDE); 00264 00265 if (!(con = con_by_frame_id(event->event))) { 00266 ELOG("Clicked into unknown window?!\n"); 00267 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time); 00268 xcb_flush(conn); 00269 return 0; 00270 } 00271 00272 /* Check if the click was on the decoration of a child */ 00273 Con *child; 00274 TAILQ_FOREACH(child, &(con->nodes_head), nodes) { 00275 if (!rect_contains(child->deco_rect, event->event_x, event->event_y)) 00276 continue; 00277 00278 return route_click(child, event, mod_pressed, CLICK_DECORATION); 00279 } 00280 00281 return route_click(con, event, mod_pressed, CLICK_BORDER); 00282 }