gri3-wm/src/click.c

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/*
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* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
*
* © 2009-2011 Michael Stapelberg and contributors
*
* See file LICENSE for license information.
*
* src/click.c: Contains the handlers for button press (mouse click) events
* because they are quite large.
*
*/
#include <time.h>
#include <math.h>
#include <xcb/xcb_atom.h>
#include <xcb/xcb_icccm.h>
#include <X11/XKBlib.h>
#include "all.h"
typedef enum { CLICK_BORDER = 0, CLICK_DECORATION = 1, CLICK_INSIDE = 2 } click_destination_t;
/*
* Finds the correct pair of first/second cons between the resize will take
* place according to the passed border position (top, left, right, bottom),
* then calls resize_graphical_handler().
*
*/
static bool tiling_resize_for_border(Con *con, border_t border, xcb_button_press_event_t *event) {
DLOG("border = %d\n", border);
char way = (border == BORDER_TOP || border == BORDER_LEFT ? 'p' : 'n');
orientation_t orientation = (border == BORDER_TOP || border == BORDER_BOTTOM ? VERT : HORIZ);
/* look for a parent container with the right orientation */
Con *first = NULL, *second = NULL;
Con *resize_con = con;
while (resize_con->type != CT_WORKSPACE &&
resize_con->parent->orientation != orientation)
resize_con = resize_con->parent;
if (resize_con->type != CT_WORKSPACE &&
resize_con->parent->orientation == orientation) {
first = resize_con;
second = (way == 'n') ? TAILQ_NEXT(first, nodes) : TAILQ_PREV(first, nodes_head, nodes);
if (second == TAILQ_END(&(first->nodes_head))) {
second = NULL;
}
else if (way == 'p') {
Con *tmp = first;
first = second;
second = tmp;
}
}
if (first == NULL || second == NULL) {
DLOG("Resize not possible\n");
return false;
}
else {
assert(first != second);
assert(first->parent == second->parent);
resize_graphical_handler(first, second, orientation, event);
}
DLOG("After resize handler, rendering\n");
tree_render();
return true;
}
/*
* Called when the user clicks using the floating_modifier, but the client is in
* tiling layout.
*
* Returns false if it does not do anything (that is, the click should be sent
* to the client).
*
*/
static bool floating_mod_on_tiled_client(Con *con, xcb_button_press_event_t *event) {
/* The client is in tiling layout. We can still initiate a resize with the
* right mouse button, by chosing the border which is the most near one to
* the position of the mouse pointer */
int to_right = con->rect.width - event->event_x,
to_left = event->event_x,
to_top = event->event_y,
to_bottom = con->rect.height - event->event_y;
DLOG("click was %d px to the right, %d px to the left, %d px to top, %d px to bottom\n",
to_right, to_left, to_top, to_bottom);
if (to_right < to_left &&
to_right < to_top &&
to_right < to_bottom)
return tiling_resize_for_border(con, BORDER_RIGHT, event);
if (to_left < to_right &&
to_left < to_top &&
to_left < to_bottom)
return tiling_resize_for_border(con, BORDER_LEFT, event);
if (to_top < to_right &&
to_top < to_left &&
to_top < to_bottom)
return tiling_resize_for_border(con, BORDER_TOP, event);
if (to_bottom < to_right &&
to_bottom < to_left &&
to_bottom < to_top)
return tiling_resize_for_border(con, BORDER_BOTTOM, event);
return false;
}
/*
* Finds out which border was clicked on and calls tiling_resize_for_border().
*
*/
static bool tiling_resize(Con *con, xcb_button_press_event_t *event, click_destination_t dest) {
/* check if this was a click on the window border (and on which one) */
Rect bsr = con_border_style_rect(con);
DLOG("BORDER x = %d, y = %d for con %p, window 0x%08x\n",
event->event_x, event->event_y, con, event->event);
DLOG("checks for right >= %d\n", con->window_rect.x + con->window_rect.width);
if (dest == CLICK_DECORATION)
return tiling_resize_for_border(con, BORDER_TOP, event);
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if (event->event_x >= 0 && event->event_x <= bsr.x &&
event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
return tiling_resize_for_border(con, BORDER_LEFT, event);
if (event->event_x >= (con->window_rect.x + con->window_rect.width) &&
event->event_y >= bsr.y && event->event_y <= con->rect.height + bsr.height)
return tiling_resize_for_border(con, BORDER_RIGHT, event);
if (event->event_y >= (con->window_rect.y + con->window_rect.height))
return tiling_resize_for_border(con, BORDER_BOTTOM, event);
return false;
}
/*
* Being called by handle_button_press, this function calls the appropriate
* functions for resizing/dragging.
*
*/
static int route_click(Con *con, xcb_button_press_event_t *event, bool mod_pressed, click_destination_t dest) {
DLOG("--> click properties: mod = %d, destination = %d\n", mod_pressed, dest);
DLOG("--> OUTCOME = %p\n", con);
DLOG("type = %d, name = %s\n", con->type, con->name);
/* dont handle dockarea cons, they must not be focused */
if (con->parent->type == CT_DOCKAREA)
goto done;
/* get the floating con */
Con *floatingcon = con_inside_floating(con);
const bool proportional = (event->state & BIND_SHIFT);
/* 1: focus this con */
con_focus(con);
const bool in_stacked = (con->parent->layout == L_STACKED || con->parent->layout == L_TABBED);
/* 2: for floating containers, we also want to raise them on click */
if (floatingcon != NULL) {
floating_raise_con(floatingcon);
/* 3: floating_modifier plus left mouse button drags */
if (mod_pressed && event->detail == 1) {
floating_drag_window(floatingcon, event);
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return 1;
}
/* 3: resize (floating) if this was a click on the left/right/bottom
* border. also try resizing (tiling) if it was a click on the top
* border, but continue if that does not work */
if (mod_pressed && event->detail == 3) {
DLOG("floating resize due to floatingmodifier\n");
floating_resize_window(floatingcon, proportional, event);
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return 1;
}
if (!in_stacked && dest == CLICK_DECORATION) {
/* try tiling resize, but continue if it doesnt work */
DLOG("tiling resize with fallback\n");
if (tiling_resize(con, event, dest))
goto done;
}
if (dest == CLICK_BORDER) {
DLOG("floating resize due to border click\n");
floating_resize_window(floatingcon, proportional, event);
return 1;
}
/* 4: dragging, if this was a click on a decoration (which did not lead
* to a resize) */
if (!in_stacked && dest == CLICK_DECORATION) {
floating_drag_window(floatingcon, event);
return 1;
}
goto done;
}
if (in_stacked) {
/* for stacked/tabbed cons, floating modifier + right click resizes the
* parent container */
if (mod_pressed && event->detail == 3)
if (floating_mod_on_tiled_client(con->parent, event))
return 1;
goto done;
}
/* 3: floating modifier pressed, initiate a resize */
if (mod_pressed && event->detail == 3) {
if (floating_mod_on_tiled_client(con, event))
return 1;
}
/* 4: otherwise, check for border/decoration clicks and resize */
else if (dest == CLICK_BORDER || dest == CLICK_DECORATION) {
DLOG("Should trry resizing (tiling)\n");
tiling_resize(con, event, dest);
}
done:
xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
xcb_flush(conn);
tree_render();
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return 0;
}
/*
* The button press X callback. This function determines whether the floating
* modifier is pressed and where the user clicked (decoration, border, inside
* the window).
*
* Then, route_click is called on the appropriate con.
*
*/
int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
Con *con;
DLOG("Button %d pressed on window 0x%08x\n", event->state, event->event);
const uint32_t mod = config.floating_modifier;
bool mod_pressed = (mod != 0 && (event->state & mod) == mod);
DLOG("floating_mod = %d, detail = %d\n", mod_pressed, event->detail);
if ((con = con_by_window_id(event->event)))
return route_click(con, event, mod_pressed, CLICK_INSIDE);
if (!(con = con_by_frame_id(event->event))) {
ELOG("Clicked into unknown window?!\n");
xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
xcb_flush(conn);
return 0;
}
/* Check if the click was on the decoration of a child */
Con *child;
TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
if (!rect_contains(child->deco_rect, event->event_x, event->event_y))
continue;
return route_click(child, event, mod_pressed, CLICK_DECORATION);
}
return route_click(con, event, mod_pressed, CLICK_BORDER);
}