407 lines
15 KiB
C
407 lines
15 KiB
C
#undef I3__FILE__
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#define I3__FILE__ "click.c"
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/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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* © 2009 Michael Stapelberg and contributors (see also: LICENSE)
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*
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* click.c: Button press (mouse click) events.
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*
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*/
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#include "all.h"
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#include <time.h>
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#include <math.h>
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#include <xcb/xcb_icccm.h>
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#include <X11/XKBlib.h>
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typedef enum { CLICK_BORDER = 0,
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CLICK_DECORATION = 1,
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CLICK_INSIDE = 2 } click_destination_t;
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/*
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* Finds the correct pair of first/second cons between the resize will take
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* place according to the passed border position (top, left, right, bottom),
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* then calls resize_graphical_handler().
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*
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*/
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static bool tiling_resize_for_border(Con *con, border_t border, xcb_button_press_event_t *event) {
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DLOG("border = %d, con = %p\n", border, con);
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Con *second = NULL;
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Con *first = con;
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direction_t search_direction;
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switch (border) {
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case BORDER_LEFT:
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search_direction = D_LEFT;
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break;
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case BORDER_RIGHT:
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search_direction = D_RIGHT;
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break;
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case BORDER_TOP:
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search_direction = D_UP;
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break;
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case BORDER_BOTTOM:
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search_direction = D_DOWN;
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break;
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default:
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assert(false);
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break;
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}
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bool res = resize_find_tiling_participants(&first, &second, search_direction);
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if (!res) {
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LOG("No second container in this direction found.\n");
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return false;
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}
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assert(first != second);
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assert(first->parent == second->parent);
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/* The first container should always be in front of the second container */
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if (search_direction == D_UP || search_direction == D_LEFT) {
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Con *tmp = first;
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first = second;
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second = tmp;
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}
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const orientation_t orientation = ((border == BORDER_LEFT || border == BORDER_RIGHT) ? HORIZ : VERT);
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resize_graphical_handler(first, second, orientation, event);
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DLOG("After resize handler, rendering\n");
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tree_render();
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return true;
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}
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/*
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* Called when the user clicks using the floating_modifier, but the client is in
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* tiling layout.
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*
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* Returns false if it does not do anything (that is, the click should be sent
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* to the client).
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*
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*/
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static bool floating_mod_on_tiled_client(Con *con, xcb_button_press_event_t *event) {
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/* The client is in tiling layout. We can still initiate a resize with the
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* right mouse button, by chosing the border which is the most near one to
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* the position of the mouse pointer */
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int to_right = con->rect.width - event->event_x,
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to_left = event->event_x,
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to_top = event->event_y,
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to_bottom = con->rect.height - event->event_y;
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DLOG("click was %d px to the right, %d px to the left, %d px to top, %d px to bottom\n",
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to_right, to_left, to_top, to_bottom);
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if (to_right < to_left &&
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to_right < to_top &&
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to_right < to_bottom)
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return tiling_resize_for_border(con, BORDER_RIGHT, event);
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if (to_left < to_right &&
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to_left < to_top &&
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to_left < to_bottom)
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return tiling_resize_for_border(con, BORDER_LEFT, event);
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if (to_top < to_right &&
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to_top < to_left &&
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to_top < to_bottom)
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return tiling_resize_for_border(con, BORDER_TOP, event);
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if (to_bottom < to_right &&
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to_bottom < to_left &&
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to_bottom < to_top)
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return tiling_resize_for_border(con, BORDER_BOTTOM, event);
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return false;
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}
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/*
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* Finds out which border was clicked on and calls tiling_resize_for_border().
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*
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*/
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static bool tiling_resize(Con *con, xcb_button_press_event_t *event, const click_destination_t dest) {
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/* check if this was a click on the window border (and on which one) */
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Rect bsr = con_border_style_rect(con);
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DLOG("BORDER x = %d, y = %d for con %p, window 0x%08x\n",
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event->event_x, event->event_y, con, event->event);
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DLOG("checks for right >= %d\n", con->window_rect.x + con->window_rect.width);
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if (dest == CLICK_DECORATION) {
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/* The user clicked on a window decoration. We ignore the following case:
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* The container is a h-split, tabbed or stacked container with > 1
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* window. Decorations will end up next to each other and the user
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* expects to switch to a window by clicking on its decoration. */
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/* Since the container might either be the child *or* already a split
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* container (in the case of a nested split container), we need to make
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* sure that we are dealing with the split container here. */
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Con *check_con = con;
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if (con_is_leaf(check_con) && check_con->parent->type == CT_CON)
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check_con = check_con->parent;
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if ((check_con->layout == L_STACKED ||
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check_con->layout == L_TABBED ||
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con_orientation(check_con) == HORIZ) &&
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con_num_children(check_con) > 1) {
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DLOG("Not handling this resize, this container has > 1 child.\n");
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return false;
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}
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return tiling_resize_for_border(con, BORDER_TOP, event);
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}
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if (event->event_x >= 0 && event->event_x <= (int32_t)bsr.x &&
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event->event_y >= (int32_t)bsr.y && event->event_y <= (int32_t)(con->rect.height + bsr.height))
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return tiling_resize_for_border(con, BORDER_LEFT, event);
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if (event->event_x >= (int32_t)(con->window_rect.x + con->window_rect.width) &&
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event->event_y >= (int32_t)bsr.y && event->event_y <= (int32_t)(con->rect.height + bsr.height))
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return tiling_resize_for_border(con, BORDER_RIGHT, event);
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if (event->event_y >= (int32_t)(con->window_rect.y + con->window_rect.height))
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return tiling_resize_for_border(con, BORDER_BOTTOM, event);
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return false;
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}
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/*
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* Being called by handle_button_press, this function calls the appropriate
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* functions for resizing/dragging.
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*
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*/
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static int route_click(Con *con, xcb_button_press_event_t *event, const bool mod_pressed, const click_destination_t dest) {
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DLOG("--> click properties: mod = %d, destination = %d\n", mod_pressed, dest);
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DLOG("--> OUTCOME = %p\n", con);
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DLOG("type = %d, name = %s\n", con->type, con->name);
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/* don’t handle dockarea cons, they must not be focused */
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if (con->parent->type == CT_DOCKAREA)
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goto done;
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const bool is_left_or_right_click = (event->detail == XCB_BUTTON_INDEX_1 ||
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event->detail == XCB_BUTTON_INDEX_3);
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/* if the user has bound an action to this click, it should override the
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* default behavior. */
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if (dest == CLICK_DECORATION || dest == CLICK_INSIDE || dest == CLICK_BORDER) {
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Binding *bind = get_binding_from_xcb_event((xcb_generic_event_t *)event);
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/* clicks over a window decoration will always trigger the binding and
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* clicks on the inside of the window will only trigger a binding if
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* the --whole-window flag was given for the binding. */
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if (bind && ((dest == CLICK_DECORATION || bind->whole_window) ||
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(dest == CLICK_BORDER && bind->border))) {
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CommandResult *result = run_binding(bind, con);
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/* ASYNC_POINTER eats the event */
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xcb_allow_events(conn, XCB_ALLOW_ASYNC_POINTER, event->time);
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xcb_flush(conn);
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if (result->needs_tree_render)
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tree_render();
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command_result_free(result);
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return 0;
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}
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}
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/* There is no default behavior for button release events so we are done. */
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if (event->response_type == XCB_BUTTON_RELEASE) {
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goto done;
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}
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/* Any click in a workspace should focus that workspace. If the
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* workspace is on another output we need to do a workspace_show in
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* order for i3bar (and others) to notice the change in workspace. */
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Con *ws = con_get_workspace(con);
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Con *focused_workspace = con_get_workspace(focused);
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if (!ws) {
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ws = TAILQ_FIRST(&(output_get_content(con_get_output(con))->focus_head));
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if (!ws)
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goto done;
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}
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if (ws != focused_workspace)
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workspace_show(ws);
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/* get the floating con */
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Con *floatingcon = con_inside_floating(con);
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const bool proportional = (event->state & BIND_SHIFT);
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const bool in_stacked = (con->parent->layout == L_STACKED || con->parent->layout == L_TABBED);
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/* 1: see if the user scrolled on the decoration of a stacked/tabbed con */
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if (in_stacked &&
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dest == CLICK_DECORATION &&
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(event->detail == XCB_BUTTON_INDEX_4 ||
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event->detail == XCB_BUTTON_INDEX_5)) {
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DLOG("Scrolling on a window decoration\n");
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orientation_t orientation = (con->parent->layout == L_STACKED ? VERT : HORIZ);
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/* Focus the currently focused container on the same level that the
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* user scrolled on. e.g. the tabbed decoration contains
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* "urxvt | i3: V[xterm geeqie] | firefox",
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* focus is on the xterm, but the user scrolled on urxvt.
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* The splitv container will be focused. */
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Con *focused = con->parent;
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focused = TAILQ_FIRST(&(focused->focus_head));
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con_focus(focused);
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/* To prevent scrolling from going outside the container (see ticket
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* #557), we first check if scrolling is possible at all. */
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bool scroll_prev_possible = (TAILQ_PREV(focused, nodes_head, nodes) != NULL);
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bool scroll_next_possible = (TAILQ_NEXT(focused, nodes) != NULL);
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if (event->detail == XCB_BUTTON_INDEX_4 && scroll_prev_possible)
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tree_next('p', orientation);
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else if (event->detail == XCB_BUTTON_INDEX_5 && scroll_next_possible)
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tree_next('n', orientation);
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goto done;
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}
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/* 2: focus this con. */
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con_focus(con);
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/* 3: For floating containers, we also want to raise them on click.
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* We will skip handling events on floating cons in fullscreen mode */
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Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
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if (floatingcon != NULL && fs != con) {
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floating_raise_con(floatingcon);
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/* 4: floating_modifier plus left mouse button drags */
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if (mod_pressed && event->detail == XCB_BUTTON_INDEX_1) {
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floating_drag_window(floatingcon, event);
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return 1;
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}
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/* 5: resize (floating) if this was a (left or right) click on the
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* left/right/bottom border, or a right click on the decoration.
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* also try resizing (tiling) if it was a click on the top */
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if (mod_pressed && event->detail == XCB_BUTTON_INDEX_3) {
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DLOG("floating resize due to floatingmodifier\n");
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floating_resize_window(floatingcon, proportional, event);
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return 1;
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}
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if (!in_stacked && dest == CLICK_DECORATION &&
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is_left_or_right_click) {
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/* try tiling resize, but continue if it doesn’t work */
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DLOG("tiling resize with fallback\n");
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if (tiling_resize(con, event, dest))
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goto done;
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}
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if (dest == CLICK_DECORATION && event->detail == XCB_BUTTON_INDEX_3) {
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DLOG("floating resize due to decoration right click\n");
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floating_resize_window(floatingcon, proportional, event);
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return 1;
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}
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if (dest == CLICK_BORDER && is_left_or_right_click) {
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DLOG("floating resize due to border click\n");
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floating_resize_window(floatingcon, proportional, event);
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return 1;
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}
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/* 6: dragging, if this was a click on a decoration (which did not lead
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* to a resize) */
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if (!in_stacked && dest == CLICK_DECORATION &&
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(event->detail == XCB_BUTTON_INDEX_1)) {
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floating_drag_window(floatingcon, event);
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return 1;
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}
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goto done;
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}
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if (in_stacked) {
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/* for stacked/tabbed cons, the resizing applies to the parent
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* container */
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con = con->parent;
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}
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/* 7: floating modifier pressed, initiate a resize */
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if (dest == CLICK_INSIDE && mod_pressed && event->detail == XCB_BUTTON_INDEX_3) {
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if (floating_mod_on_tiled_client(con, event))
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return 1;
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}
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/* 8: otherwise, check for border/decoration clicks and resize */
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else if ((dest == CLICK_BORDER || dest == CLICK_DECORATION) &&
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is_left_or_right_click) {
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DLOG("Trying to resize (tiling)\n");
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tiling_resize(con, event, dest);
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}
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done:
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xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
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xcb_flush(conn);
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tree_render();
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return 0;
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}
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/*
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* The button press X callback. This function determines whether the floating
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* modifier is pressed and where the user clicked (decoration, border, inside
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* the window).
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*
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* Then, route_click is called on the appropriate con.
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*
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*/
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int handle_button_press(xcb_button_press_event_t *event) {
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Con *con;
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DLOG("Button %d %s on window 0x%08x (child 0x%08x) at (%d, %d) (root %d, %d)\n",
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event->state, (event->response_type == XCB_BUTTON_PRESS ? "press" : "release"),
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event->event, event->child, event->event_x, event->event_y, event->root_x,
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event->root_y);
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last_timestamp = event->time;
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const uint32_t mod = config.floating_modifier;
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const bool mod_pressed = (mod != 0 && (event->state & mod) == mod);
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DLOG("floating_mod = %d, detail = %d\n", mod_pressed, event->detail);
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if ((con = con_by_window_id(event->event)))
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return route_click(con, event, mod_pressed, CLICK_INSIDE);
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if (!(con = con_by_frame_id(event->event))) {
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/* If the root window is clicked, find the relevant output from the
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* click coordinates and focus the output's active workspace. */
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if (event->event == root && event->response_type == XCB_BUTTON_PRESS) {
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Con *output, *ws;
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TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
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if (con_is_internal(output) ||
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!rect_contains(output->rect, event->event_x, event->event_y))
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continue;
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ws = TAILQ_FIRST(&(output_get_content(output)->focus_head));
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if (ws != con_get_workspace(focused)) {
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workspace_show(ws);
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tree_render();
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}
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return 1;
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}
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return 0;
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}
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ELOG("Clicked into unknown window?!\n");
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xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
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xcb_flush(conn);
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return 0;
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}
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/* Check if the click was on the decoration of a child */
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Con *child;
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TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
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if (!rect_contains(child->deco_rect, event->event_x, event->event_y))
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continue;
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return route_click(child, event, mod_pressed, CLICK_DECORATION);
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}
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if (event->child != XCB_NONE) {
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DLOG("event->child not XCB_NONE, so this is an event which originated from a click into the application, but the application did not handle it.\n");
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return route_click(con, event, mod_pressed, CLICK_INSIDE);
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}
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return route_click(con, event, mod_pressed, CLICK_BORDER);
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}
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