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awesome/mouse.c

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/*
* mouse.c - mouse managing
*
* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <math.h>
#include "common/tokenize.h"
#include "screen.h"
#include "tag.h"
#include "titlebar.h"
#include "layouts/floating.h"
#include "layouts/tile.h"
#include "layouts/magnifier.h"
#include "common/xcursor.h"
#define MOUSEMASK (XCB_EVENT_MASK_BUTTON_PRESS \
| XCB_EVENT_MASK_BUTTON_RELEASE \
| XCB_EVENT_MASK_POINTER_MOTION)
extern awesome_t globalconf;
DO_LUA_NEW(extern, button_t, button, "button", button_ref)
DO_LUA_GC(button_t, button, "button", button_unref)
DO_LUA_EQ(button_t, button, "button")
/** Define corners. */
typedef enum
{
AutoCorner,
TopRightCorner,
TopLeftCorner,
BottomLeftCorner,
BottomRightCorner
} corner_t;
/** Convert a corner name into a corner type.
* \param str A string.
* \param len String length.
* \return A corner type.
*/
static corner_t
a_strtocorner(const char *str, size_t len)
{
switch (a_tokenize(str, len))
{
case A_TK_BOTTOMRIGHT: return BottomRightCorner;
case A_TK_BOTTOMLEFT: return BottomLeftCorner;
case A_TK_TOPLEFT: return TopLeftCorner;
case A_TK_TOPRIGHT: return TopRightCorner;
default: return AutoCorner;
}
}
/** Delete a button.
* \param button The button to destroy.
*/
void
button_delete(button_t **button)
{
luaL_unref(globalconf.L, LUA_REGISTRYINDEX, (*button)->press);
luaL_unref(globalconf.L, LUA_REGISTRYINDEX, (*button)->release);
p_delete(button);
}
/** Snap an area to the outside of an area.
* \param geometry geometry of the area to snap
* \param snap_geometry geometry of snapping area
* \param snap snap trigger in pixel
* \return snapped geometry
*/
static area_t
mouse_snapclienttogeometry_outside(area_t geometry, area_t snap_geometry, int snap)
{
if(geometry.x < snap + snap_geometry.x + snap_geometry.width
&& geometry.x > snap_geometry.x + snap_geometry.width)
geometry.x = snap_geometry.x + snap_geometry.width;
else if(geometry.x + geometry.width < snap_geometry.x
&& geometry.x + geometry.width > snap_geometry.x - snap)
geometry.x = snap_geometry.x - geometry.width;
if(geometry.y < snap + snap_geometry.y + snap_geometry.height
&& geometry.y > snap_geometry.y + snap_geometry.height)
geometry.y = snap_geometry.y + snap_geometry.height;
else if(geometry.y + geometry.height < snap_geometry.y
&& geometry.y + geometry.height > snap_geometry.y - snap)
geometry.y = snap_geometry.y - geometry.height;
return geometry;
}
/** Snap an area to the inside of an area.
* \param geometry geometry of the area to snap
* \param snap_geometry geometry of snapping area
* \param snap snap trigger in pixel
* \return snapped geometry
*/
static area_t
mouse_snapclienttogeometry_inside(area_t geometry, area_t snap_geometry, int snap)
{
if(abs(geometry.x) < snap + snap_geometry.x && geometry.x > snap_geometry.x)
geometry.x = snap_geometry.x;
else if(abs((snap_geometry.x + snap_geometry.width) - (geometry.x + geometry.width))
< snap)
geometry.x = snap_geometry.x + snap_geometry.width - geometry.width;
if(abs(geometry.y) < snap + snap_geometry.y && geometry.y > snap_geometry.y)
geometry.y = snap_geometry.y;
else if(abs((snap_geometry.y + snap_geometry.height) - (geometry.y + geometry.height))
< snap)
geometry.y = snap_geometry.y + snap_geometry.height - geometry.height;
return geometry;
}
/** Snap a client with a future geometry to the screen and other clients.
* \param c The client.
* \param geometry Geometry the client will get.
* \param snap The maximum distance in pixels to trigger a "snap".
* \return Geometry to set to the client.
*/
static area_t
mouse_snapclient(client_t *c, area_t geometry, int snap)
{
client_t *snapper;
area_t snapper_geometry;
area_t screen_geometry =
screen_area_get(c->screen,
&globalconf.screens[c->screen].wiboxes,
&globalconf.screens[c->screen].padding,
false);
area_t screen_geometry_barless =
screen_area_get(c->screen,
NULL,
&globalconf.screens[c->screen].padding,
false);
geometry = titlebar_geometry_add(c->titlebar, c->border, geometry);
geometry =
mouse_snapclienttogeometry_inside(geometry, screen_geometry, snap);
geometry =
mouse_snapclienttogeometry_inside(geometry, screen_geometry_barless, snap);
for(snapper = globalconf.clients; snapper; snapper = snapper->next)
if(snapper != c && client_isvisible(snapper, c->screen))
{
snapper_geometry = snapper->geometry;
snapper_geometry = titlebar_geometry_add(snapper->titlebar, snapper->border, snapper_geometry);
geometry =
mouse_snapclienttogeometry_outside(geometry,
snapper_geometry,
snap);
}
return titlebar_geometry_remove(c->titlebar, c->border, geometry);
}
/** Set coordinates to a corner of an area.
*
* \param a The area.
* \param[in,out] x The x coordinate.
* \param[in,out] y The y coordinate.
* \param corner The corner to snap to.
* \return The corner the coordinates have been set to. If corner != AutoCorner
* this is always equal to \em corner.
*
* \todo rename/move this is still awkward and might be useful somewhere else.
*/
static corner_t
mouse_snap_to_corner(area_t a, int *x, int *y, corner_t corner)
{
int top, bottom, left, right;
top = AREA_TOP(a);
bottom = AREA_BOTTOM(a);
left = AREA_LEFT(a);
right = AREA_RIGHT(a);
/* figure out the nearser corner */
if(corner == AutoCorner)
{
if(abs(top - *y) < abs(bottom - *y))
{
if(abs(left - *x) < abs(right - *x))
corner = TopLeftCorner;
else
corner = TopRightCorner;
}
else
{
if(abs(left - *x) < abs(right - *x))
corner = BottomLeftCorner;
else
corner = BottomRightCorner;
}
}
switch(corner)
{
case TopRightCorner:
*x = right;
*y = top;
break;
case TopLeftCorner:
*x = left;
*y = top;
break;
case BottomLeftCorner:
*x = left;
*y = bottom;
break;
case BottomRightCorner:
*x = right;
*y = bottom;
break;
default:
break;
}
return corner;
}
/** Redraw the infobox.
* \param sw The simple window.
* \param geometry The geometry to use for the box.
* \param border The client border size.
*/
static void
mouse_infobox_draw(simple_window_t *sw, area_t geometry, int border)
{
area_t draw_geometry = { 0, 0, sw->ctx.width, sw->ctx.height };
char size[64];
size_t len;
xcolor_t color_without_alpha = globalconf.colors.bg;
color_without_alpha.alpha = 0xffff;
len = snprintf(size, sizeof(size), "<text align=\"center\"/>%dx%d+%d+%d",
geometry.width, geometry.height, geometry.x, geometry.y);
draw_rectangle(&sw->ctx, draw_geometry, 1.0, true, &color_without_alpha);
draw_text(&sw->ctx, globalconf.font, PANGO_ELLIPSIZE_NONE, PANGO_WRAP_WORD, draw_geometry, size, len, NULL);
simplewindow_move(sw,
geometry.x + ((2 * border + geometry.width) - sw->geometry.width) / 2,
geometry.y + ((2 * border + geometry.height) - sw->geometry.height) / 2);
simplewindow_refresh_pixmap(sw);
xcb_flush(globalconf.connection);
}
#define MOUSE_INFOBOX_STRING_DEFAULT "0000x0000+0000+0000"
/** Initialize the infobox window.
* \param sw The simple window to init.
* \param phys_screen Physical screen number.
* \param border Border size of the client.
* \param geometry Client geometry.
* \return The simple window.
*/
static void
mouse_infobox_new(simple_window_t *sw, int phys_screen, int border, area_t geometry)
{
area_t geom;
draw_parser_data_t pdata;
draw_parser_data_init(&pdata);
geom = draw_text_extents(globalconf.font,
MOUSE_INFOBOX_STRING_DEFAULT,
sizeof(MOUSE_INFOBOX_STRING_DEFAULT)-1,
&pdata);
geom.x = geometry.x + ((2 * border + geometry.width) - geom.width) / 2;
geom.y = geometry.y + ((2 * border + geometry.height) - geom.height) / 2;
p_clear(sw, 1);
simplewindow_init(sw, phys_screen, geom, 0, East,
&globalconf.colors.fg, &globalconf.colors.bg);
xcb_map_window(globalconf.connection, sw->window);
mouse_infobox_draw(sw, geometry, border);
draw_parser_data_wipe(&pdata);
}
/** Get the pointer position.
* \param window The window to get position on.
* \param x will be set to the Pointer-x-coordinate relative to window
* \param y will be set to the Pointer-y-coordinate relative to window
* \param mask will be set to the current buttons state
* \return true on success, false if an error occured
**/
bool
mouse_query_pointer(xcb_window_t window, int *x, int *y, uint16_t *mask)
{
xcb_query_pointer_cookie_t query_ptr_c;
xcb_query_pointer_reply_t *query_ptr_r;
query_ptr_c = xcb_query_pointer_unchecked(globalconf.connection, window);
query_ptr_r = xcb_query_pointer_reply(globalconf.connection, query_ptr_c, NULL);
if(!query_ptr_r || !query_ptr_r->same_screen)
return false;
*x = query_ptr_r->win_x;
*y = query_ptr_r->win_y;
if (mask)
*mask = query_ptr_r->mask;
p_delete(&query_ptr_r);
return true;
}
/** Get the pointer position on the screen.
* \param screen This will be set to the screen number the mouse is on.
* \param x This will be set to the Pointer-x-coordinate relative to window.
* \param y This will be set to the Pointer-y-coordinate relative to window.
* \param mask This will be set to the current buttons state.
* \return True on success, false if an error occured.
*/
static bool
mouse_query_pointer_root(int *s, int *x, int *y, uint16_t *mask)
{
for(int screen = 0;
screen < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
screen++)
{
xcb_window_t root = xutil_screen_get(globalconf.connection, screen)->root;
if(mouse_query_pointer(root, x, y, mask))
{
*s = screen;
return true;
}
}
return false;
}
/** Grab the Pointer.
* \param window The window grabbed.
* \param cursor The cursor to display.
* \return True on success, false if an error occured.
*/
static bool
mouse_grab_pointer(xcb_window_t window, xcb_cursor_t cursor)
{
xcb_grab_pointer_cookie_t grab_ptr_c;
xcb_grab_pointer_reply_t *grab_ptr_r;
grab_ptr_c = xcb_grab_pointer_unchecked(globalconf.connection, false, window,
MOUSEMASK, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC,
window, cursor, XCB_CURRENT_TIME);
grab_ptr_r = xcb_grab_pointer_reply(globalconf.connection, grab_ptr_c, NULL);
if(!grab_ptr_r)
return false;
p_delete(&grab_ptr_r);
return true;
}
/** Ungrab the Pointer
*/
static inline void
mouse_ungrab_pointer(void)
{
xcb_ungrab_pointer(globalconf.connection, XCB_CURRENT_TIME);
}
/** Set the pointer position.
* \param window The destination window.
* \param x X-coordinate inside window.
* \param y Y-coordinate inside window.
*/
static inline void
mouse_warp_pointer(xcb_window_t window, int x, int y)
{
xcb_warp_pointer(globalconf.connection, XCB_NONE, window,
0, 0, 0, 0, x, y );
}
/** Utility function to help with mouse-dragging
*
* \param x set to x-coordinate of the last event on return
* \param y set to y-coordinate of the last event on return
* \return true if an motion event was received
* false if an button release event was received
*/
static bool
mouse_track_mouse_drag(int *x, int *y)
{
xcb_generic_event_t *ev;
xcb_motion_notify_event_t *ev_motion;
xcb_button_release_event_t *ev_button;
while(true)
while((ev = xcb_wait_for_event(globalconf.connection)))
switch((ev->response_type & 0x7F))
{
case XCB_MOTION_NOTIFY:
ev_motion = (xcb_motion_notify_event_t*) ev;
*x = ev_motion->event_x;
*y = ev_motion->event_y;
p_delete(&ev);
return true;
case XCB_BUTTON_RELEASE:
ev_button = (xcb_button_release_event_t*) ev;
*x = ev_button->event_x;
*y = ev_button->event_y;
p_delete(&ev);
return false;
default:
xcb_event_handle(&globalconf.evenths, ev);
p_delete(&ev);
break;
}
}
/** Get the client that contains the pointer.
*
* \return The client that contains the pointer or NULL.
*/
static client_t *
mouse_get_client_under_pointer(int phys_screen)
{
xcb_window_t root;
xcb_query_pointer_cookie_t query_ptr_c;
xcb_query_pointer_reply_t *query_ptr_r;
client_t *c = NULL;
root = xutil_screen_get(globalconf.connection, phys_screen)->root;
query_ptr_c = xcb_query_pointer_unchecked(globalconf.connection, root);
query_ptr_r = xcb_query_pointer_reply(globalconf.connection, query_ptr_c, NULL);
if(query_ptr_r)
{
c = client_getbywin(query_ptr_r->child);
p_delete(&query_ptr_r);
}
return c;
}
/** Move the focused window with the mouse.
* \param c The client.
* \param snap The maximum distance in pixels to trigger a "snap".
* \param infobox Enable or disable the infobox.
*/
static void
mouse_client_move(client_t *c, int snap, bool infobox)
{
/* current mouse postion */
int mouse_x, mouse_y;
/* last mouse position */
int last_x = 0, last_y = 0;
/* current layout */
layout_t *layout;
/* the infobox */
simple_window_t sw;
/* the root window */
xcb_window_t root;
layout = layout_get_current(c->screen);
root = xutil_screen_get(globalconf.connection, c->phys_screen)->root;
/* get current pointer position */
mouse_query_pointer(root, &last_x, &last_y, NULL);
/* grab pointer */
if(c->isfullscreen
|| c->type == WINDOW_TYPE_DESKTOP
|| c->type == WINDOW_TYPE_SPLASH
|| c->type == WINDOW_TYPE_DOCK
|| !mouse_grab_pointer(root, xcursor_new(globalconf.connection, XC_fleur)))
return;
if(infobox && (client_isfloating(c) || layout == layout_floating))
mouse_infobox_new(&sw, c->phys_screen, c->border, c->geometry);
else
infobox = false;
/* for each motion event */
while(mouse_track_mouse_drag(&mouse_x, &mouse_y))
if(client_isfloating(c) || layout == layout_floating)
{
area_t geometry;
/* calc new geometry */
geometry = c->geometry;
geometry.x += (mouse_x - last_x);
geometry.y += (mouse_y - last_y);
/* snap and move */
geometry = mouse_snapclient(c, geometry, snap);
c->ismoving = true;
client_resize(c, geometry, false);
xcb_flush(globalconf.connection);
c->ismoving = false;
/* draw the infobox */
if(infobox)
mouse_infobox_draw(&sw, c->geometry, c->border);
/* refresh live */
wibox_refresh();
xcb_flush(globalconf.connection);
/* keep track */
last_x = mouse_x;
last_y = mouse_y;
}
else
{
int newscreen;
client_t *target;
/* client moved to another screen? */
newscreen = screen_getbycoord(c->screen, mouse_x, mouse_y);
if(newscreen != c->screen)
{
screen_client_moveto(c, newscreen, true, true);
globalconf.screens[c->screen].need_arrange = true;
globalconf.screens[newscreen].need_arrange = true;
layout_refresh();
wibox_refresh();
xcb_flush(globalconf.connection);
}
/* find client to swap with */
target = mouse_get_client_under_pointer(c->phys_screen);
/* swap position */
if(target && target != c && !target->isfloating)
{
client_list_swap(&globalconf.clients, c, target);
globalconf.screens[c->screen].need_arrange = true;
if(globalconf.hooks.clients != LUA_REFNIL)
luaA_dofunction(globalconf.L, globalconf.hooks.clients, 0, 0);
layout_refresh();
wibox_refresh();
xcb_flush(globalconf.connection);
}
}
/* ungrab pointer */
xcb_ungrab_pointer(globalconf.connection, XCB_CURRENT_TIME);
/* free the infobox */
if(infobox)
simplewindow_wipe(&sw);
}
/** Resize a floating client with the mouse.
* \param c The client to resize.
* \param corner The corner to resize with.
* \param infobox Enable or disable the infobox.
*/
static void
mouse_client_resize_floating(client_t *c, corner_t corner, bool infobox)
{
xcb_screen_t *screen;
/* one corner of the client has a fixed position */
int fixed_x, fixed_y;
/* the other is moved with the mouse */
int mouse_x = 0, mouse_y = 0;
/* the infobox */
simple_window_t sw;
xcb_cursor_t cursor;
int top, bottom, left, right;
/* do not resize fixed client */
if(client_isfixed(c))
return;
screen = xutil_screen_get(globalconf.connection, c->phys_screen);
/* get current mouse position */
mouse_query_pointer(screen->root, &mouse_x, &mouse_y, NULL);
top = c->geometry.y;
bottom = top + c->geometry.height;
left = c->geometry.x;
right = left + c->geometry.width;
/* figure out which corner to move */
corner = mouse_snap_to_corner(c->geometry, &mouse_x, &mouse_y, corner);
/* the opposite corner is fixed */
fixed_x = (mouse_x == left) ? right : left;
fixed_y = (mouse_y == top) ? bottom : top;
/* select cursor */
switch(corner)
{
default:
cursor = xcursor_new(globalconf.connection, XC_top_left_corner);
break;
case TopRightCorner:
cursor = xcursor_new(globalconf.connection, XC_top_right_corner);
break;
case BottomLeftCorner:
cursor = xcursor_new(globalconf.connection, XC_bottom_left_corner);
break;
case BottomRightCorner:
cursor = xcursor_new(globalconf.connection, XC_bottom_right_corner);
break;
}
/* grab the pointer */
if(!mouse_grab_pointer(screen->root, cursor))
return;
/* set pointer to the moveable corner */
mouse_warp_pointer(screen->root, mouse_x, mouse_y);
/* create the infobox */
if(infobox)
mouse_infobox_new(&sw, c->phys_screen, c->border, c->geometry);
/* for each motion event */
while(mouse_track_mouse_drag(&mouse_x, &mouse_y))
{
/* new client geometry */
area_t geo = { .x = MIN(fixed_x, mouse_x),
.y = MIN(fixed_y, mouse_y),
.width = (MAX(fixed_x, mouse_x) - MIN(fixed_x, mouse_x)),
.height = (MAX(fixed_y, mouse_y) - MIN(fixed_y, mouse_y)) };
/* new moveable corner */
corner_t new_corner;
if(mouse_x == AREA_LEFT(geo))
new_corner = (mouse_y == AREA_TOP(geo)) ? TopLeftCorner : BottomLeftCorner;
else
new_corner = (mouse_y == AREA_TOP(geo)) ? TopRightCorner : BottomRightCorner;
/* update cursor */
if(corner != new_corner)
{
corner = new_corner;
switch(corner)
{
default: cursor = xcursor_new(globalconf.connection, XC_top_left_corner); break;
case TopRightCorner: cursor = xcursor_new(globalconf.connection, XC_top_right_corner); break;
case BottomLeftCorner: cursor = xcursor_new(globalconf.connection, XC_bottom_left_corner); break;
case BottomRightCorner: cursor = xcursor_new(globalconf.connection, XC_bottom_right_corner); break;
}
xcb_change_active_pointer_grab(globalconf.connection, cursor,
XCB_CURRENT_TIME, MOUSEMASK);
}
if(c->hassizehints && c->honorsizehints)
{
int dx, dy;
/* apply size hints */
geo = client_geometry_hints(c, geo);
/* get the nonmoveable corner back onto fixed_x,fixed_y */
switch(corner)
{
default /* TopLeftCorner */:
dx = fixed_x - AREA_RIGHT(geo);
dy = fixed_y - AREA_BOTTOM(geo);
break;
case TopRightCorner:
dx = fixed_x - AREA_LEFT(geo);
dy = fixed_y - AREA_BOTTOM(geo);
break;
case BottomRightCorner:
dx = fixed_x - AREA_LEFT(geo);
dy = fixed_y - AREA_TOP(geo);
break;
case BottomLeftCorner:
dx = fixed_x - AREA_RIGHT(geo);
dy = fixed_y - AREA_TOP(geo);
break;
}
geo.x += dx;
geo.y += dy;
}
/* resize the client */
client_resize(c, geo, false);
/* refresh live */
wibox_refresh();
xcb_flush(globalconf.connection);
/* draw the infobox */
if(infobox)
mouse_infobox_draw(&sw, c->geometry, c->border);
}
/* relase pointer */
mouse_ungrab_pointer();
/* free the infobox */
if(infobox)
simplewindow_wipe(&sw);
}
/** Resize the master column/row of a tiled layout
* \param c A client on the tag/layout to resize.
*/
static void
mouse_client_resize_tiled(client_t *c)
{
xcb_screen_t *screen;
/* screen area modulo wibox */
area_t area;
/* current tag */
tag_t *tag;
/* current layout */
layout_t *layout;
int mouse_x = 0, mouse_y = 0;
xcb_cursor_t cursor;
screen = xutil_screen_get(globalconf.connection, c->phys_screen);
tag = tags_get_current(c->screen)[0];
layout = tag->layout;
area = screen_area_get(tag->screen,
&globalconf.screens[tag->screen].wiboxes,
&globalconf.screens[tag->screen].padding,
true);
mouse_query_pointer(screen->root, &mouse_x, &mouse_y, NULL);
/* select initial pointer position */
if(layout == layout_tile)
{
mouse_x = area.x + area.width * tag->mwfact;
cursor = xcursor_new(globalconf.connection, XC_bottom_right_corner);
}
else if(layout == layout_tileleft)
{
mouse_x = area.x + area.width * (1. - tag->mwfact);
cursor = xcursor_new(globalconf.connection, XC_sb_h_double_arrow);
}
else if(layout == layout_tilebottom)
{
mouse_y = area.y + area.height * tag->mwfact;
cursor = xcursor_new(globalconf.connection, XC_sb_v_double_arrow);
}
else if(layout == layout_tiletop)
{
mouse_y = area.y + area.height * (1. - tag->mwfact);
cursor = xcursor_new(globalconf.connection, XC_sb_v_double_arrow);
}
else
return;
/* grab the pointer */
if(!mouse_grab_pointer(screen->root, cursor))
return;
/* set pointer to the moveable border */
mouse_warp_pointer(screen->root, mouse_x, mouse_y);
xcb_flush(globalconf.connection);
/* for each motion event */
while(mouse_track_mouse_drag(&mouse_x, &mouse_y))
{
double mwfact = 0, fact_x, fact_y;
/* calculate new master / rest ratio */
fact_x = (double) (mouse_x - area.x) / area.width;
fact_y = (double) (mouse_y - area.y) / area.height;
if(layout == layout_tile)
mwfact = fact_x;
else if(layout == layout_tileleft)
mwfact = 1. - fact_x;
else if(layout == layout_tilebottom)
mwfact = fact_y;
else if(layout == layout_tiletop)
mwfact = 1. - fact_y;
/* keep mwfact within reasonable bounds */
mwfact = MIN(MAX( 0.01, mwfact), 0.99);
/* refresh layout */
if(fabs(tag->mwfact - mwfact) >= 0.01)
{
tag->mwfact = mwfact;
globalconf.screens[tag->screen].need_arrange = true;
layout_refresh();
wibox_refresh();
xcb_flush(globalconf.connection);
}
}
/* relase pointer */
mouse_ungrab_pointer();
}
/** Resize the master client in mangifier layout
* \param c The client to resize.
* \param infobox Enable or disable the infobox.
*/
static void
mouse_client_resize_magnified(client_t *c, bool infobox)
{
/* screen area modulo wibox */
area_t area;
/* center of area */
int center_x, center_y;
/* max. distance from the center */
double maxdist;
/* mouse position */
int mouse_x = 0, mouse_y = 0;
/* cursor while grabbing */
xcb_cursor_t cursor;
corner_t corner = AutoCorner;
/* current tag */
tag_t *tag;
/* the infobox */
simple_window_t sw;
xcb_window_t root;
tag = tags_get_current(c->screen)[0];
root = xutil_screen_get(globalconf.connection, c->phys_screen)->root;
area = screen_area_get(tag->screen,
&globalconf.screens[tag->screen].wiboxes,
&globalconf.screens[tag->screen].padding,
true);
center_x = area.x + (round(area.width / 2.));
center_y = area.y + (round(area.height / 2.));
maxdist = round(sqrt((area.width*area.width) + (area.height*area.height)) / 2.);
root = xutil_screen_get(globalconf.connection, c->phys_screen)->root;
if(!mouse_query_pointer(root, &mouse_x, &mouse_y, NULL))
return;
/* select corner */
corner = mouse_snap_to_corner(c->geometry, &mouse_x, &mouse_y, corner);
/* select cursor */
switch(corner)
{
default:
cursor = xcursor_new(globalconf.connection, XC_top_left_corner);
break;
case TopRightCorner:
cursor = xcursor_new(globalconf.connection, XC_top_right_corner);
break;
case BottomLeftCorner:
cursor = xcursor_new(globalconf.connection, XC_bottom_left_corner);
break;
case BottomRightCorner:
cursor = xcursor_new(globalconf.connection, XC_bottom_right_corner);
break;
}
/* grab pointer */
if(!mouse_grab_pointer(root, cursor))
return;
/* move pointer to corner */
mouse_warp_pointer(root, mouse_x, mouse_y);
/* create the infobox */
if(infobox)
mouse_infobox_new(&sw, c->phys_screen, c->border, c->geometry);
/* for each motion event */
while(mouse_track_mouse_drag(&mouse_x, &mouse_y))
{
/* \todo keep pointer on screen diagonals */
double mwfact, dist, dx, dy;
/* calc distance from the center */
dx = center_x - mouse_x;
dy = center_y - mouse_y;
dist = sqrt((dx * dx) + (dy * dy));
/* new master/rest ratio */
mwfact = (dist * dist) / (maxdist * maxdist);
/* keep mwfact within reasonable bounds */
mwfact = MIN(MAX( 0.01, mwfact), 0.99);
/* refresh the layout */
if(fabs(tag->mwfact - mwfact) >= 0.01)
{
tag->mwfact = mwfact;
globalconf.screens[tag->screen].need_arrange = true;
layout_refresh();
wibox_refresh();
xcb_flush(globalconf.connection);
}
/* draw the infobox */
if(infobox)
mouse_infobox_draw(&sw, c->geometry, c->border);
}
/* ungrab pointer */
mouse_ungrab_pointer();
/* free the infobox */
if(infobox)
simplewindow_wipe(&sw);
}
/** Resize a client with the mouse.
* \param c The client to resize.
* \param corner The corner to use.
* \param infobox Enable or disable the info box.
*/
static void
mouse_client_resize(client_t *c, corner_t corner, bool infobox)
{
int n, screen;
tag_t **curtags;
layout_t *layout;
xcb_screen_t *s;
if(c->isfullscreen
|| c->type == WINDOW_TYPE_DESKTOP
|| c->type == WINDOW_TYPE_SPLASH
|| c->type == WINDOW_TYPE_DOCK)
return;
curtags = tags_get_current(c->screen);
layout = curtags[0]->layout;
s = xutil_screen_get(globalconf.connection, c->phys_screen);
/* only handle floating, tiled and magnifier layouts */
if(layout == layout_floating || client_isfloating(c))
mouse_client_resize_floating(c, corner, infobox);
else if(layout == layout_tile || layout == layout_tileleft
|| layout == layout_tilebottom || layout == layout_tiletop)
{
screen = c->screen;
for(n = 0, c = globalconf.clients; c; c = c->next)
if(IS_TILED(c, screen))
n++;
/* only masters on this screen? */
if(n <= curtags[0]->nmaster)
goto bailout;
/* no tiled clients on this screen? */
for(c = globalconf.clients; c && !IS_TILED(c, screen); c = c->next);
if(!c)
goto bailout;
mouse_client_resize_tiled(c);
}
else if(layout == layout_magnifier)
mouse_client_resize_magnified(c, infobox);
bailout:
p_delete(&curtags);
}
/** Resize a client with mouse.
* \param L The Lua VM state.
*
* \luastack
* \lvalue A client.
* \lparam An optional table with keys: `corner', such as bottomleft,
* topright, etc, to specify which corner to grab (default to auto) and
* `infobox' to enable or disable the coordinates and dimensions box (default to
* enabled).
*/
int
luaA_client_mouse_resize(lua_State *L)
{
client_t **c = luaA_checkudata(L, 1, "client");
corner_t corner = AutoCorner;
bool infobox = true;
size_t len;
const char *buf;
if(lua_gettop(L) == 2 && !lua_isnil(L, 2))
{
luaA_checktable(L, 2);
buf = luaA_getopt_lstring(L, 2, "corner", "auto", &len);
corner = a_strtocorner(buf, len);
infobox = luaA_getopt_boolean(L, 2, "infobox", true);
}
mouse_client_resize(*c, corner, infobox);
return 0;
}
/** Move a client with mouse.
* \param L The Lua VM state.
*
* \luastack
* \lvalue A client.
* \lparam An optional table with keys: `snap' for pixel to snap (default to 8), and
* `infobox' to enable or disable the coordinates and dimensions box (default to
* enabled).
*/
int
luaA_client_mouse_move(lua_State *L)
{
client_t **c = luaA_checkudata(L, 1, "client");
int snap = 8;
bool infobox = true;
if(lua_gettop(L) == 2 && !lua_isnil(L, 2))
{
luaA_checktable(L, 2);
snap = luaA_getopt_number(L, 2, "snap", 8);
infobox = luaA_getopt_boolean(L, 2, "infobox", true);
}
mouse_client_move(*c, snap, infobox);
return 0;
}
/** Create a new mouse button bindings.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack
* \lparam A table with modifiers keys, or a button to clone.
* \lparam A mouse button number.
* \lparam A function to execute on click events.
* \lparam A function to execute on release events.
* \lreturn A mouse button binding.
*/
static int
luaA_button_new(lua_State *L)
{
int i, len;
button_t *button, **orig;
if((orig = luaA_toudata(L, 2, "button")))
{
button_t *copy = p_new(button_t, 1);
copy->mod = (*orig)->mod;
copy->button = (*orig)->button;
if((*orig)->press != LUA_REFNIL)
{
lua_rawgeti(L, LUA_REGISTRYINDEX, (*orig)->press);
luaA_registerfct(L, -1, &copy->press);
}
else
copy->press = LUA_REFNIL;
if((*orig)->release != LUA_REFNIL)
{
lua_rawgeti(L, LUA_REGISTRYINDEX, (*orig)->release);
luaA_registerfct(L, -1, &copy->release);
}
else
copy->release = LUA_REFNIL;
return luaA_button_userdata_new(L, copy);
}
luaA_checktable(L, 2);
/* arg 3 is mouse button */
i = luaL_checknumber(L, 3);
/* arg 4 and 5 are callback functions */
if(!lua_isnil(L, 4))
luaA_checkfunction(L, 4);
if(lua_gettop(L) == 5 && !lua_isnil(L, 5))
luaA_checkfunction(L, 5);
button = p_new(button_t, 1);
button->button = xutil_button_fromint(i);
if(lua_isnil(L, 4))
button->press = LUA_REFNIL;
else
luaA_registerfct(L, 4, &button->press);
if(lua_gettop(L) == 5 && !lua_isnil(L, 5))
luaA_registerfct(L, 5, &button->release);
else
button->release = LUA_REFNIL;
len = lua_objlen(L, 2);
for(i = 1; i <= len; i++)
{
size_t blen;
const char *buf;
lua_rawgeti(L, 2, i);
buf = luaL_checklstring(L, -1, &blen);
button->mod |= xutil_key_mask_fromstr(buf, blen);
}
return luaA_button_userdata_new(L, button);
}
/** Set a button array with a Lua table.
* \param L The Lua VM state.
* \param idx The index of the Lua table.
* \param buttons The array button to fill.
*/
void
luaA_button_array_set(lua_State *L, int idx, button_array_t *buttons)
{
button_t **b;
luaA_checktable(L, idx);
button_array_wipe(buttons);
button_array_init(buttons);
lua_pushnil(L);
while(lua_next(L, idx))
{
b = luaA_checkudata(L, -1, "button");
button_array_append(buttons, *b);
button_ref(b);
lua_pop(L, 1);
}
}
/** Push an array of button as an Lua table onto the stack.
* \param L The Lua VM state.
* \param buttons The button array to push.
* \return The number of elements pushed on stack.
*/
int
luaA_button_array_get(lua_State *L, button_array_t *buttons)
{
luaA_otable_new(L);
for(int i = 0; i < buttons->len; i++)
{
luaA_button_userdata_new(L, buttons->tab[i]);
lua_rawseti(L, -2, i + 1);
}
return 1;
}
/** Button object.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack
* \lfield press The function called when button press event is received.
* \lfield release The function called when button release event is received.
*/
static int
luaA_button_index(lua_State *L)
{
if(luaA_usemetatable(L, 1, 2))
return 1;
size_t len;
button_t **button = luaA_checkudata(L, 1, "button");
const char *attr = luaL_checklstring(L, 2, &len);
switch(a_tokenize(attr, len))
{
case A_TK_PRESS:
if((*button)->press != LUA_REFNIL)
lua_rawgeti(L, LUA_REGISTRYINDEX, (*button)->press);
else
lua_pushnil(L);
break;
case A_TK_RELEASE:
if((*button)->release != LUA_REFNIL)
lua_rawgeti(L, LUA_REGISTRYINDEX, (*button)->release);
else
lua_pushnil(L);
break;
case A_TK_BUTTON:
/* works fine, but not *really* neat */
lua_pushnumber(L, (*button)->button);
break;
default:
break;
}
return 1;
}
/** Button object.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack
*/
static int
luaA_button_newindex(lua_State *L)
{
if(luaA_usemetatable(L, 1, 2))
return 1;
size_t len;
button_t **button = luaA_checkudata(L, 1, "button");
const char *attr = luaL_checklstring(L, 2, &len);
switch(a_tokenize(attr, len))
{
case A_TK_PRESS:
luaA_registerfct(L, 3, &(*button)->press);
break;
case A_TK_RELEASE:
luaA_registerfct(L, 3, &(*button)->release);
break;
case A_TK_BUTTON:
(*button)->button = xutil_button_fromint(luaL_checknumber(L, 3));
break;
default:
break;
}
return 0;
}
const struct luaL_reg awesome_button_methods[] =
{
{ "__call", luaA_button_new },
{ NULL, NULL }
};
const struct luaL_reg awesome_button_meta[] =
{
{ "__index", luaA_button_index },
{ "__newindex", luaA_button_newindex },
{ "__gc", luaA_button_gc },
{ "__eq", luaA_button_eq },
{ "__tostring", luaA_button_tostring },
{ NULL, NULL }
};
/** Mouse library.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack
* \lfield coords Mouse coordinates.
* \lfield screen Mouse screen number.
*/
static int
luaA_mouse_index(lua_State *L)
{
size_t len;
const char *attr = luaL_checklstring(L, 2, &len);
int mouse_x, mouse_y, i;
int screen;
switch(a_tokenize(attr, len))
{
case A_TK_SCREEN:
if(!mouse_query_pointer_root(&screen, &mouse_x, &mouse_y, NULL))
return 0;
i = screen_getbycoord(screen, mouse_x, mouse_y);
lua_pushnumber(L, i + 1);
break;
default:
return 0;
}
return 1;
}
/** Newindex for mouse.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
*/
static int
luaA_mouse_newindex(lua_State *L)
{
size_t len;
const char *attr = luaL_checklstring(L, 2, &len);
int x, y = 0;
xcb_window_t root;
int screen, phys_screen;
switch(a_tokenize(attr, len))
{
case A_TK_SCREEN:
screen = luaL_checknumber(L, 3) - 1;
luaA_checkscreen(screen);
/* we need the physical one to get the root window */
phys_screen = screen_virttophys(screen);
root = xutil_screen_get(globalconf.connection, phys_screen)->root;
x = globalconf.screens[screen].geometry.x;
y = globalconf.screens[screen].geometry.y;
mouse_warp_pointer(root, x, y);
break;
default:
return 0;
}
return 0;
}
/** Push a table with mouse status.
* \param L The Lua VM state.
* \param x The x coordinate.
* \param y The y coordinate.
* \param mask The button mask.
*/
int
luaA_mouse_pushstatus(lua_State *L, int x, int y, uint16_t mask)
{
lua_newtable(L);
lua_pushnumber(L, x);
lua_setfield(L, -2, "x");
lua_pushnumber(L, y);
lua_setfield(L, -2, "y");
lua_newtable(L);
int i = 1;
for(uint16_t maski = XCB_BUTTON_MASK_1; maski <= XCB_BUTTON_MASK_5; maski <<= 1)
{
if(mask & maski)
lua_pushboolean(L, true);
else
lua_pushboolean(L, false);
lua_rawseti(L, -2, i++);
}
lua_setfield(L, -2, "buttons");
return 1;
}
/** Get or set the mouse coords.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack
* \lparam None or a table with x and y keys as mouse coordinates.
* \lreturn A table with mouse coordinates.
*/
static int
luaA_mouse_coords(lua_State *L)
{
uint16_t mask;
int screen, x, y, mouse_x, mouse_y;
if(lua_gettop(L) == 1)
{
xcb_window_t root;
luaA_checktable(L, 1);
if(!mouse_query_pointer_root(&screen, &mouse_x, &mouse_y, &mask))
return 0;
x = luaA_getopt_number(L, 1, "x", mouse_x);
y = luaA_getopt_number(L, 1, "y", mouse_y);
root = xutil_screen_get(globalconf.connection, screen)->root;
mouse_warp_pointer(root, x, y);
lua_pop(L, 1);
}
if(!mouse_query_pointer_root(&screen, &mouse_x, &mouse_y, &mask))
return 0;
return luaA_mouse_pushstatus(L, mouse_x, mouse_y, mask);
}
/** Get the client which is under the pointer.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack
* \lreturn A client or nil.
*/
static int
luaA_mouse_client_under_pointer(lua_State *L)
{
for(int screen = 0;
screen < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
screen++)
{
xcb_window_t root = xutil_screen_get(globalconf.connection, screen)->root;
xcb_query_pointer_reply_t *query_ptr_r;
xcb_query_pointer_cookie_t query_ptr_c = xcb_query_pointer_unchecked(globalconf.connection, root);
query_ptr_r = xcb_query_pointer_reply(globalconf.connection, query_ptr_c, NULL);
if(query_ptr_r)
{
client_t *c = client_getbywin(query_ptr_r->child);
p_delete(&query_ptr_r);
if(c)
return luaA_client_userdata_new(L, c);
else
{
lua_pushnil(L);
return 1;
}
}
}
return 0;
}
const struct luaL_reg awesome_mouse_methods[] =
{
{ "__index", luaA_mouse_index },
{ "__newindex", luaA_mouse_newindex },
{ "coords", luaA_mouse_coords },
{ "client_under_pointer", luaA_mouse_client_under_pointer },
{ NULL, NULL }
};
const struct luaL_reg awesome_mouse_meta[] =
{
{ NULL, NULL }
};
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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