283 lines
9.6 KiB
C
283 lines
9.6 KiB
C
/*
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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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*
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* © 2009-2011 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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* src/click.c: Contains the handlers for button press (mouse click) events
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* because they are quite large.
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*
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*/
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#include <time.h>
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#include <math.h>
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#include <xcb/xcb_atom.h>
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#include <xcb/xcb_icccm.h>
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#include <X11/XKBlib.h>
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#include "all.h"
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typedef enum { CLICK_BORDER = 0, CLICK_DECORATION = 1, 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\n", border);
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char way = (border == BORDER_TOP || border == BORDER_LEFT ? 'p' : 'n');
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orientation_t orientation = (border == BORDER_TOP || border == BORDER_BOTTOM ? VERT : HORIZ);
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/* look for a parent container with the right orientation */
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Con *first = NULL, *second = NULL;
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Con *resize_con = con;
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while (resize_con->type != CT_WORKSPACE &&
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resize_con->type != CT_FLOATING_CON &&
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resize_con->parent->orientation != orientation)
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resize_con = resize_con->parent;
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if (resize_con->type != CT_WORKSPACE &&
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resize_con->type != CT_FLOATING_CON &&
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resize_con->parent->orientation == orientation) {
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first = resize_con;
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second = (way == 'n') ? TAILQ_NEXT(first, nodes) : TAILQ_PREV(first, nodes_head, nodes);
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if (second == TAILQ_END(&(first->nodes_head))) {
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second = NULL;
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}
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else if (way == 'p') {
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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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}
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if (first == NULL || second == NULL) {
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DLOG("Resize not possible\n");
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return false;
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}
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else {
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assert(first != second);
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assert(first->parent == second->parent);
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resize_graphical_handler(first, second, orientation, event);
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}
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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, 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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return tiling_resize_for_border(con, BORDER_TOP, event);
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if (event->event_x >= 0 && event->event_x <= bsr.x &&
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event->event_y >= bsr.y && event->event_y <= 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 >= (con->window_rect.x + con->window_rect.width) &&
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event->event_y >= bsr.y && event->event_y <= 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 >= (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, bool mod_pressed, 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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/* 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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if (event->detail == XCB_BUTTON_INDEX_4)
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tree_next('p', orientation);
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else 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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if (floatingcon != NULL) {
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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 == 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 click on the left/right/bottom
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* border. also try resizing (tiling) if it was a click on the top
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* border, but continue if that does not work */
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if (mod_pressed && event->detail == 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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/* 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_BORDER) {
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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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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 (mod_pressed && event->detail == 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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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 pressed on window 0x%08x\n", event->state, event->event);
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const uint32_t mod = config.floating_modifier;
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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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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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return route_click(con, event, mod_pressed, CLICK_BORDER);
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}
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