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awesome/objects/window.c

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/*
* window.c - window object
*
* Copyright © 2009 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.
*
*/
/** Handling of X properties.
*
* This can not be used as a standalone class, but is instead referenced
* explicitely in the classes, where it can be used. In the respective
* classes,it then can be used via `classname:get_xproperty(...)` etc.
* @classmod xproperties
*/
#include "objects/window.h"
#include "common/atoms.h"
#include "common/xutil.h"
#include "ewmh.h"
#include "property.h"
#include "xwindow.h"
LUA_CLASS_FUNCS(window, window_class)
static xcb_window_t
window_get(window_t *window)
{
if (window->frame_window != XCB_NONE)
return window->frame_window;
return window->window;
}
static void
window_wipe(window_t *window)
{
button_array_wipe(&window->buttons);
}
/** Get or set mouse buttons bindings on a window.
* \param L The Lua VM state.
* \return The number of elements pushed on the stack.
*/
static int
luaA_window_buttons(lua_State *L)
{
window_t *window = luaA_checkudata(L, 1, &window_class);
if(lua_gettop(L) == 2)
{
luaA_button_array_set(L, 1, 2, &window->buttons);
luaA_object_emit_signal(L, 1, "property::buttons", 0);
xwindow_buttons_grab(window_get(window), &window->buttons);
}
return luaA_button_array_get(L, 1, &window->buttons);
}
/** Return window struts (reserved space at the edge of the screen).
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
*/
static int
luaA_window_struts(lua_State *L)
{
window_t *window = luaA_checkudata(L, 1, &window_class);
if(lua_gettop(L) == 2)
{
luaA_tostrut(L, 2, &window->strut);
ewmh_update_strut(window->window, &window->strut);
luaA_object_emit_signal(L, 1, "property::struts", 0);
/* FIXME: Only emit if the workarea actually changed
* (= window is visible, only on the right screen)? */
foreach(s, globalconf.screens)
{
luaA_object_push(L, *s);
luaA_object_emit_signal(L, -1, "property::workarea", 0);
lua_pop(L, 1);
}
}
return luaA_pushstrut(L, window->strut);
}
/** Set a window opacity.
* \param L The Lua VM state.
* \param idx The index of the window on the stack.
* \param opacity The opacity value.
*/
void
window_set_opacity(lua_State *L, int idx, double opacity)
{
window_t *window = luaA_checkudata(L, idx, &window_class);
if(window->opacity != opacity)
{
window->opacity = opacity;
xwindow_set_opacity(window_get(window), opacity);
luaA_object_emit_signal(L, idx, "property::opacity", 0);
}
}
/** Set a window opacity.
* \param L The Lua VM state.
* \param window The window object.
* \return The number of elements pushed on stack.
*/
static int
luaA_window_set_opacity(lua_State *L, window_t *window)
{
if(lua_isnil(L, -1))
window_set_opacity(L, -3, -1);
else
{
double d = luaL_checknumber(L, -1);
if(d >= 0 && d <= 1)
window_set_opacity(L, -3, d);
}
return 0;
}
/** Get the window opacity.
* \param L The Lua VM state.
* \param window The window object.
* \return The number of elements pushed on stack.
*/
static int
luaA_window_get_opacity(lua_State *L, window_t *window)
{
if(window->opacity >= 0)
lua_pushnumber(L, window->opacity);
else
/* Let's always return some "good" value */
lua_pushnumber(L, 1);
return 1;
}
void
window_border_refresh(window_t *window)
{
if(!window->border_need_update)
return;
window->border_need_update = false;
xwindow_set_border_color(window_get(window), &window->border_color);
if(window->window)
xcb_configure_window(globalconf.connection, window_get(window),
XCB_CONFIG_WINDOW_BORDER_WIDTH,
(uint32_t[]) { window->border_width });
}
/** Set the window border color.
* \param L The Lua VM state.
* \param window The window object.
* \return The number of elements pushed on stack.
*/
static int
luaA_window_set_border_color(lua_State *L, window_t *window)
{
size_t len;
const char *color_name = luaL_checklstring(L, -1, &len);
if(color_name &&
color_init_reply(color_init_unchecked(&window->border_color, color_name, len)))
{
window->border_need_update = true;
luaA_object_emit_signal(L, -3, "property::border_color", 0);
}
return 0;
}
/** Set a window border width.
* \param L The Lua VM state.
* \param idx The window index.
* \param width The border width.
*/
void
window_set_border_width(lua_State *L, int idx, int width)
{
window_t *window = luaA_checkudata(L, idx, &window_class);
uint16_t old_width = window->border_width;
if(width == window->border_width || width < 0)
return;
window->border_need_update = true;
window->border_width = width;
if(window->border_width_callback)
(*window->border_width_callback)(window, old_width, width);
luaA_object_emit_signal(L, idx, "property::border_width", 0);
}
/** Get the window type.
* \param L The Lua VM state.
* \param window The window object.
* \return The number of elements pushed on stack.
*/
int
luaA_window_get_type(lua_State *L, window_t *w)
{
switch(w->type)
{
case WINDOW_TYPE_DESKTOP:
lua_pushliteral(L, "desktop");
break;
case WINDOW_TYPE_DOCK:
lua_pushliteral(L, "dock");
break;
case WINDOW_TYPE_SPLASH:
lua_pushliteral(L, "splash");
break;
case WINDOW_TYPE_DIALOG:
lua_pushliteral(L, "dialog");
break;
case WINDOW_TYPE_MENU:
lua_pushliteral(L, "menu");
break;
case WINDOW_TYPE_TOOLBAR:
lua_pushliteral(L, "toolbar");
break;
case WINDOW_TYPE_UTILITY:
lua_pushliteral(L, "utility");
break;
case WINDOW_TYPE_DROPDOWN_MENU:
lua_pushliteral(L, "dropdown_menu");
break;
case WINDOW_TYPE_POPUP_MENU:
lua_pushliteral(L, "popup_menu");
break;
case WINDOW_TYPE_TOOLTIP:
lua_pushliteral(L, "tooltip");
break;
case WINDOW_TYPE_NOTIFICATION:
lua_pushliteral(L, "notification");
break;
case WINDOW_TYPE_COMBO:
lua_pushliteral(L, "combo");
break;
case WINDOW_TYPE_DND:
lua_pushliteral(L, "dnd");
break;
case WINDOW_TYPE_NORMAL:
lua_pushliteral(L, "normal");
break;
default:
return 0;
}
return 1;
}
/** Set the window type.
* \param L The Lua VM state.
* \param window The window object.
* \return The number of elements pushed on stack.
*/
int
luaA_window_set_type(lua_State *L, window_t *w)
{
window_type_t type;
const char *buf = luaL_checkstring(L, -1);
if (A_STREQ(buf, "desktop"))
type = WINDOW_TYPE_DESKTOP;
else if(A_STREQ(buf, "dock"))
type = WINDOW_TYPE_DOCK;
else if(A_STREQ(buf, "splash"))
type = WINDOW_TYPE_SPLASH;
else if(A_STREQ(buf, "dialog"))
type = WINDOW_TYPE_DIALOG;
else if(A_STREQ(buf, "menu"))
type = WINDOW_TYPE_MENU;
else if(A_STREQ(buf, "toolbar"))
type = WINDOW_TYPE_TOOLBAR;
else if(A_STREQ(buf, "utility"))
type = WINDOW_TYPE_UTILITY;
else if(A_STREQ(buf, "dropdown_menu"))
type = WINDOW_TYPE_DROPDOWN_MENU;
else if(A_STREQ(buf, "popup_menu"))
type = WINDOW_TYPE_POPUP_MENU;
else if(A_STREQ(buf, "tooltip"))
type = WINDOW_TYPE_TOOLTIP;
else if(A_STREQ(buf, "notification"))
type = WINDOW_TYPE_NOTIFICATION;
else if(A_STREQ(buf, "combo"))
type = WINDOW_TYPE_COMBO;
else if(A_STREQ(buf, "dnd"))
type = WINDOW_TYPE_DND;
else if(A_STREQ(buf, "normal"))
type = WINDOW_TYPE_NORMAL;
else
{
luaA_warn(L, "Unknown window type '%s'", buf);
return 0;
}
if(w->type != type)
{
w->type = type;
if(w->window != XCB_WINDOW_NONE)
ewmh_update_window_type(w->window, window_translate_type(w->type));
luaA_object_emit_signal(L, -3, "property::type", 0);
}
return 0;
}
static xproperty_t *
luaA_find_xproperty(lua_State *L, int idx)
{
const char *name = luaL_checkstring(L, idx);
foreach(prop, globalconf.xproperties)
if (A_STREQ(prop->name, name))
return prop;
luaL_argerror(L, idx, "Unknown xproperty");
return NULL;
}
int
window_set_xproperty(lua_State *L, xcb_window_t window, int prop_idx, int value_idx)
{
xproperty_t *prop = luaA_find_xproperty(L, prop_idx);
xcb_atom_t type;
uint8_t format;
size_t len;
uint32_t number;
const void *data;
if(lua_isnil(L, value_idx))
{
xcb_delete_property(globalconf.connection, window, prop->atom);
} else {
if(prop->type == PROP_STRING)
{
data = luaL_checklstring(L, value_idx, &len);
type = UTF8_STRING;
format = 8;
} else if(prop->type == PROP_NUMBER || prop->type == PROP_BOOLEAN)
{
if (prop->type == PROP_NUMBER)
number = luaA_checkinteger_range(L, value_idx, 0, UINT32_MAX);
else
number = luaA_checkboolean(L, value_idx);
data = &number;
len = 1;
type = XCB_ATOM_CARDINAL;
format = 32;
} else
fatal("Got an xproperty with invalid type");
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE, window,
prop->atom, type, format, len, data);
}
return 0;
}
int
window_get_xproperty(lua_State *L, xcb_window_t window, int prop_idx)
{
xproperty_t *prop = luaA_find_xproperty(L, prop_idx);
xcb_atom_t type;
void *data;
xcb_get_property_reply_t *reply;
uint32_t length;
type = prop->type == PROP_STRING ? UTF8_STRING : XCB_ATOM_CARDINAL;
length = prop->type == PROP_STRING ? UINT32_MAX : 1;
reply = xcb_get_property_reply(globalconf.connection,
xcb_get_property_unchecked(globalconf.connection, false, window,
prop->atom, type, 0, length), NULL);
if(!reply)
return 0;
data = xcb_get_property_value(reply);
if(prop->type == PROP_STRING)
lua_pushlstring(L, data, reply->value_len);
else
{
if(reply->value_len <= 0)
{
p_delete(&reply);
return 0;
}
if(prop->type == PROP_NUMBER)
lua_pushinteger(L, *(uint32_t *) data);
else
lua_pushboolean(L, *(uint32_t *) data);
}
p_delete(&reply);
return 1;
}
/** Change a xproperty.
*
* @param name The name of the X11 property
* @param value The new value for the property
* @function set_xproperty
*/
static int
luaA_window_set_xproperty(lua_State *L)
{
window_t *w = luaA_checkudata(L, 1, &window_class);
return window_set_xproperty(L, w->window, 2, 3);
}
/** Get the value of a xproperty.
*
* @param name The name of the X11 property
* @function get_xproperty
*/
static int
luaA_window_get_xproperty(lua_State *L)
{
window_t *w = luaA_checkudata(L, 1, &window_class);
return window_get_xproperty(L, w->window, 2);
}
/* Translate a window_type_t into the corresponding EWMH atom.
* @param type The type to return.
* @return The EWMH atom for this type.
*/
uint32_t
window_translate_type(window_type_t type)
{
switch(type)
{
case WINDOW_TYPE_NORMAL:
return _NET_WM_WINDOW_TYPE_NORMAL;
case WINDOW_TYPE_DESKTOP:
return _NET_WM_WINDOW_TYPE_DESKTOP;
case WINDOW_TYPE_DOCK:
return _NET_WM_WINDOW_TYPE_DOCK;
case WINDOW_TYPE_SPLASH:
return _NET_WM_WINDOW_TYPE_SPLASH;
case WINDOW_TYPE_DIALOG:
return _NET_WM_WINDOW_TYPE_DIALOG;
case WINDOW_TYPE_MENU:
return _NET_WM_WINDOW_TYPE_MENU;
case WINDOW_TYPE_TOOLBAR:
return _NET_WM_WINDOW_TYPE_TOOLBAR;
case WINDOW_TYPE_UTILITY:
return _NET_WM_WINDOW_TYPE_UTILITY;
case WINDOW_TYPE_DROPDOWN_MENU:
return _NET_WM_WINDOW_TYPE_DROPDOWN_MENU;
case WINDOW_TYPE_POPUP_MENU:
return _NET_WM_WINDOW_TYPE_POPUP_MENU;
case WINDOW_TYPE_TOOLTIP:
return _NET_WM_WINDOW_TYPE_TOOLTIP;
case WINDOW_TYPE_NOTIFICATION:
return _NET_WM_WINDOW_TYPE_NOTIFICATION;
case WINDOW_TYPE_COMBO:
return _NET_WM_WINDOW_TYPE_COMBO;
case WINDOW_TYPE_DND:
return _NET_WM_WINDOW_TYPE_DND;
}
return _NET_WM_WINDOW_TYPE_NORMAL;
}
static int
luaA_window_set_border_width(lua_State *L, window_t *c)
{
window_set_border_width(L, -3, round(luaA_checknumber_range(L, -1, 0, MAX_X11_SIZE)));
return 0;
}
LUA_OBJECT_EXPORT_PROPERTY(window, window_t, window, lua_pushinteger)
LUA_OBJECT_EXPORT_PROPERTY(window, window_t, border_color, luaA_pushcolor)
LUA_OBJECT_EXPORT_PROPERTY(window, window_t, border_width, lua_pushinteger)
void
window_class_setup(lua_State *L)
{
static const struct luaL_Reg window_methods[] =
{
{ NULL, NULL }
};
static const struct luaL_Reg window_meta[] =
{
{ "struts", luaA_window_struts },
{ "buttons", luaA_window_buttons },
{ "set_xproperty", luaA_window_set_xproperty },
{ "get_xproperty", luaA_window_get_xproperty },
{ NULL, NULL }
};
luaA_class_setup(L, &window_class, "window", NULL,
NULL, (lua_class_collector_t) window_wipe, NULL,
luaA_class_index_miss_property, luaA_class_newindex_miss_property,
window_methods, window_meta);
luaA_class_add_property(&window_class, "window",
NULL,
(lua_class_propfunc_t) luaA_window_get_window,
NULL);
luaA_class_add_property(&window_class, "opacity",
(lua_class_propfunc_t) luaA_window_set_opacity,
(lua_class_propfunc_t) luaA_window_get_opacity,
(lua_class_propfunc_t) luaA_window_set_opacity);
luaA_class_add_property(&window_class, "border_color",
(lua_class_propfunc_t) luaA_window_set_border_color,
(lua_class_propfunc_t) luaA_window_get_border_color,
(lua_class_propfunc_t) luaA_window_set_border_color);
luaA_class_add_property(&window_class, "border_width",
(lua_class_propfunc_t) luaA_window_set_border_width,
(lua_class_propfunc_t) luaA_window_get_border_width,
(lua_class_propfunc_t) luaA_window_set_border_width);
/**
* @signal property::border_color
*/
signal_add(&window_class.signals, "property::border_color");
/**
* @signal property::border_width
*/
signal_add(&window_class.signals, "property::border_width");
/**
* @signal property::buttons
*/
signal_add(&window_class.signals, "property::buttons");
/**
* @signal property::opacity
*/
signal_add(&window_class.signals, "property::opacity");
/**
* @signal property::struts
*/
signal_add(&window_class.signals, "property::struts");
/**
* @signal property::type
*/
signal_add(&window_class.signals, "property::type");
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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