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awesome/titlebar.c

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/*
* titlebar.c - titlebar management
*
* Copyright © 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 <xcb/xcb.h>
#include <xcb/xcb_aux.h>
#include <math.h>
#include "titlebar.h"
#include "client.h"
#include "widget.h"
extern awesome_t globalconf;
DO_LUA_NEW(extern, titlebar_t, titlebar, "titlebar", titlebar_ref)
DO_LUA_GC(titlebar_t, titlebar, "titlebar", titlebar_unref)
DO_LUA_EQ(titlebar_t, titlebar, "titlebar")
/** Get a client by its titlebar.
* \param titlebar The titlebar.
* \return A client.
*/
client_t *
client_getbytitlebar(titlebar_t *titlebar)
{
client_t *c;
for(c = globalconf.clients; c; c = c->next)
if(c->titlebar == titlebar)
return c;
return NULL;
}
/** Get a client by its titlebar window.
* \param win The window.
* \return A client.
*/
client_t *
client_getbytitlebarwin(xcb_window_t win)
{
client_t *c;
for(c = globalconf.clients; c; c = c->next)
if(c->titlebar && c->titlebar->sw && c->titlebar->sw->window == win)
return c;
return NULL;
}
/** Draw the titlebar content.
* \param c The client.
*/
void
titlebar_draw(client_t *c)
{
xcb_drawable_t dw = 0;
draw_context_t *ctx;
xcb_screen_t *s;
if(!c || !c->titlebar || !c->titlebar->sw || !c->titlebar->position)
return;
s = xutil_screen_get(globalconf.connection,
c->titlebar->sw->phys_screen);
switch(c->titlebar->position)
{
case Off:
return;
case Right:
case Left:
dw = xcb_generate_id(globalconf.connection);
xcb_create_pixmap(globalconf.connection, s->root_depth,
dw,
s->root,
c->titlebar->sw->geometry.height,
c->titlebar->sw->geometry.width);
ctx = draw_context_new(globalconf.connection, c->titlebar->sw->phys_screen,
c->titlebar->sw->geometry.height,
c->titlebar->sw->geometry.width,
dw,
&c->titlebar->colors.fg,
&c->titlebar->colors.bg);
break;
default:
ctx = draw_context_new(globalconf.connection, c->titlebar->sw->phys_screen,
c->titlebar->sw->geometry.width,
c->titlebar->sw->geometry.height,
c->titlebar->sw->pixmap,
&c->titlebar->colors.fg,
&c->titlebar->colors.bg);
break;
}
widget_render(c->titlebar->widgets, ctx, c->titlebar->sw->gc, c->titlebar->sw->pixmap,
c->screen, c->titlebar->position,
c->titlebar->sw->geometry.x, c->titlebar->sw->geometry.y, c->titlebar);
switch(c->titlebar->position)
{
case Left:
draw_rotate(ctx, ctx->pixmap, c->titlebar->sw->pixmap,
ctx->width, ctx->height,
ctx->height, ctx->width,
- M_PI_2, 0, c->titlebar->sw->geometry.height);
xcb_free_pixmap(globalconf.connection, dw);
break;
case Right:
draw_rotate(ctx, ctx->pixmap, c->titlebar->sw->pixmap,
ctx->width, ctx->height,
ctx->height, ctx->width,
M_PI_2, c->titlebar->sw->geometry.width, 0);
xcb_free_pixmap(globalconf.connection, dw);
default:
break;
}
simplewindow_refresh_pixmap(c->titlebar->sw);
draw_context_delete(&ctx);
}
void
titlebar_geometry_compute(client_t *c, area_t geometry, area_t *res)
{
int width, x_offset = 0, y_offset = 0;
switch(c->titlebar->position)
{
default:
return;
case Top:
if(c->titlebar->width)
width = MAX(1, MIN(c->titlebar->width, geometry.width - 2 * c->titlebar->border.width));
else
width = MAX(1, geometry.width + 2 * c->border - 2 * c->titlebar->border.width);
switch(c->titlebar->align)
{
default:
break;
case AlignRight:
x_offset = 2 * c->border + geometry.width - width - 2 * c->titlebar->border.width;
break;
case AlignCenter:
x_offset = (geometry.width - width) / 2;
break;
}
res->x = geometry.x + x_offset;
res->y = geometry.y - c->titlebar->height - 2 * c->titlebar->border.width + c->border;
res->width = width;
res->height = c->titlebar->height;
break;
case Bottom:
if(c->titlebar->width)
width = MAX(1, MIN(c->titlebar->width, geometry.width - 2 * c->titlebar->border.width));
else
width = MAX(1, geometry.width + 2 * c->border - 2 * c->titlebar->border.width);
switch(c->titlebar->align)
{
default:
break;
case AlignRight:
x_offset = 2 * c->border + geometry.width - width - 2 * c->titlebar->border.width;
break;
case AlignCenter:
x_offset = (geometry.width - width) / 2;
break;
}
res->x = geometry.x + x_offset;
res->y = geometry.y + geometry.height + c->border;
res->width = width;
res->height = c->titlebar->height;
break;
case Left:
if(c->titlebar->width)
width = MAX(1, MIN(c->titlebar->width, geometry.height - 2 * c->titlebar->border.width));
else
width = MAX(1, geometry.height + 2 * c->border - 2 * c->titlebar->border.width);
switch(c->titlebar->align)
{
default:
break;
case AlignRight:
y_offset = 2 * c->border + geometry.height - width - 2 * c->titlebar->border.width;
break;
case AlignCenter:
y_offset = (geometry.height - width) / 2;
break;
}
res->x = geometry.x - c->titlebar->height + c->border;
res->y = geometry.y + y_offset;
res->width = c->titlebar->height;
res->height = width;
break;
case Right:
if(c->titlebar->width)
width = MAX(1, MIN(c->titlebar->width, geometry.height - 2 * c->titlebar->border.width));
else
width = MAX(1, geometry.height + 2 * c->border - 2 * c->titlebar->border.width);
switch(c->titlebar->align)
{
default:
break;
case AlignRight:
y_offset = 2 * c->border + geometry.height - width - 2 * c->titlebar->border.width;
break;
case AlignCenter:
y_offset = (geometry.height - width) / 2;
break;
}
res->x = geometry.x + geometry.width + c->border;
res->y = geometry.y + y_offset;
res->width = c->titlebar->height;
res->height = width;
break;
}
}
/** Set client titlebar position.
* \param c The client.
*/
void
titlebar_init(client_t *c)
{
int width = 0, height = 0;
area_t geom;
switch(c->titlebar->position)
{
default:
c->titlebar->position = Off;
return;
case Top:
case Bottom:
if(c->titlebar->width)
width = MIN(c->titlebar->width, c->geometry.width - 2 * c->titlebar->border.width);
else
width = c->geometry.width + 2 * c->border - 2 * c->titlebar->border.width;
height = c->titlebar->height;
break;
case Left:
case Right:
if(c->titlebar->width)
height = MIN(c->titlebar->width, c->geometry.height - 2 * c->titlebar->border.width);
else
height = c->geometry.height + 2 * c->border - 2 * c->titlebar->border.width;
width = c->titlebar->height;
break;
}
titlebar_geometry_compute(c, c->geometry, &geom);
c->titlebar->sw = simplewindow_new(globalconf.connection, c->phys_screen, geom.x, geom.y,
geom.width, geom.height, c->titlebar->border.width);
if(c->titlebar->border.width)
xcb_change_window_attributes(globalconf.connection, c->titlebar->sw->window,
XCB_CW_BORDER_PIXEL, &c->titlebar->border.color.pixel);
if(client_isvisible(c, c->screen))
globalconf.screens[c->screen].need_arrange = true;
titlebar_draw(c);
}
/** Create a new titlebar.
* \param L The Lua VM state.
* \return The number of value pushed.
*
* \luastack
* \lparam A table with values: align, position, fg, bg, border_width,
* border_color, width and height.
* \lreturn A brand new titlebar.
*/
static int
luaA_titlebar_new(lua_State *L)
{
titlebar_t *tb;
const char *buf;
size_t len;
luaA_checktable(L, 2);
tb = p_new(titlebar_t, 1);
buf = luaA_getopt_lstring(L, 2, "align", "left", &len);
tb->align = draw_align_fromstr(buf, len);
tb->width = luaA_getopt_number(L, 2, "width", 0);
tb->height = luaA_getopt_number(L, 2, "height", 0);
if(tb->height <= 0)
/* 1.5 as default factor, it fits nice but no one knows why */
tb->height = 1.5 * globalconf.font->height;
buf = luaA_getopt_lstring(L, 2, "position", "top", &len);
tb->position = position_fromstr(buf, len);
tb->colors.fg = globalconf.colors.fg;
if((buf = luaA_getopt_lstring(L, 2, "fg", NULL, &len)))
xcolor_init(&tb->colors.fg, globalconf.connection,
globalconf.default_screen, buf, len);
tb->colors.bg = globalconf.colors.bg;
if((buf = luaA_getopt_lstring(L, 2, "bg", NULL, &len)))
xcolor_init(&tb->colors.bg, globalconf.connection,
globalconf.default_screen, buf, len);
tb->border.color = globalconf.colors.fg;
if((buf = luaA_getopt_lstring(L, 2, "border_color", NULL, &len)))
xcolor_init(&tb->border.color, globalconf.connection,
globalconf.default_screen, buf, len);
tb->border.width = luaA_getopt_number(L, 2, "border_width", 0);
return luaA_titlebar_userdata_new(globalconf.L, tb);
}
/** Add a widget to a titlebar.
* \param L The Lua VM state.
* \return The number of value pushed.
*
* \luastack
* \lvalue A titlebar.
* \lparam A widget.
*/
static int
luaA_titlebar_widget_add(lua_State *L)
{
titlebar_t **tb = luaA_checkudata(L, 1, "titlebar");
widget_t **widget = luaA_checkudata(L, 2, "widget");
widget_node_t *witer, *w;
if((*widget)->type == systray_new)
luaL_error(L, "cannot add systray widget to titlebar");
/* check that there is not already a widget with that name in the titlebar */
for(witer = (*tb)->widgets; witer; witer = witer->next)
if(witer->widget != *widget
&& !a_strcmp(witer->widget->name, (*widget)->name))
luaL_error(L, "a widget with name `%s' already on titlebar", witer->widget->name);
w = p_new(widget_node_t, 1);
w->widget = *widget;
widget_node_list_append(&(*tb)->widgets, w);
widget_ref(widget);
titlebar_draw(client_getbytitlebar(*tb));
return 0;
}
/** Remove a widget from a titlebar.
* \param L The Lua VM State.
*
* \luastack
* \lvalue A statusbar.
* \lparam A widget.
*/
static int
luaA_titlebar_widget_remove(lua_State *L)
{
titlebar_t **tb = luaA_checkudata(L, 1, "titlebar");
widget_t **widget = luaA_checkudata(L, 2, "widget");
widget_node_t *w, *wnext;
for(w = (*tb)->widgets; w; w = wnext)
{
wnext = w->next;
if(w->widget == *widget)
{
widget_unref(widget);
widget_node_list_detach(&(*tb)->widgets, w);
p_delete(&w);
titlebar_draw(client_getbytitlebar(*tb));
}
}
return 0;
}
/** Get all widgets from a titlebar.
* \param L The Lua VM state.
* \return The number of value pushed.
*
* \luastack
* \lvalue A titlebar
* \lreturn A table with all widgets from the titlebar.
*/
static int
luaA_titlebar_widget_get(lua_State *L)
{
titlebar_t **tb = luaA_checkudata(L, 1, "titlebar");
widget_node_t *witer;
lua_newtable(L);
for(witer = (*tb)->widgets; witer; witer = witer->next)
{
luaA_widget_userdata_new(L, witer->widget);
/* ref again for the list */
widget_ref(&witer->widget);
lua_setfield(L, -2, witer->widget->name);
}
return 1;
}
/** Get the client which the titlebar is attached to. That is a the same as
* checking if every clients's titlebar is equal to titlebar.
* \param L The Lua VM state.
*
* \luastack
* \lvalue A titlebar.
* \lreturn A client if the titlebar is attached, nil otherwise.
*/
static int
luaA_titlebar_client_get(lua_State *L)
{
titlebar_t **titlebar = luaA_checkudata(L, 1, "titlebar");
client_t *c;
if((c = client_getbytitlebar(*titlebar)))
return luaA_client_userdata_new(L, c);
return 0;
}
/** Titlebar newindex.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
*/
static int
luaA_titlebar_newindex(lua_State *L)
{
size_t len;
titlebar_t **titlebar = luaA_checkudata(L, 1, "titlebar");
const char *buf, *attr = luaL_checklstring(L, 2, &len);
client_t *c;
int i;
switch(a_tokenize(attr, len))
{
case A_TK_ALIGN:
if((buf = luaL_checklstring(L, 3, &len)))
(*titlebar)->align = draw_align_fromstr(buf, len);
else
return 0;
break;
case A_TK_BORDER_WIDTH:
if((i = luaL_checknumber(L, 3)) >= 0)
(*titlebar)->border.width = i;
else
return 0;
break;
case A_TK_BORDER_COLOR:
if((buf = luaL_checklstring(L, 3, &len)))
if(xcolor_init(&(*titlebar)->border.color, globalconf.connection,
globalconf.default_screen, buf, len))
if((*titlebar)->sw)
xcb_change_window_attributes(globalconf.connection, (*titlebar)->sw->window,
XCB_CW_BORDER_PIXEL, &(*titlebar)->border.color.pixel);
return 0;
case A_TK_FG:
if((buf = luaL_checklstring(L, 3, &len)))
if(xcolor_init(&(*titlebar)->colors.fg, globalconf.connection,
globalconf.default_screen, buf, len))
titlebar_draw(client_getbytitlebar(*titlebar));
return 0;
case A_TK_BG:
if((buf = luaL_checklstring(L, 3, &len)))
if(xcolor_init(&(*titlebar)->colors.bg, globalconf.connection,
globalconf.default_screen, buf, len))
titlebar_draw(client_getbytitlebar(*titlebar));
return 0;
default:
return 0;
}
if((c = client_getbytitlebar(*titlebar))
&& client_isvisible(c, c->screen))
globalconf.screens[c->screen].need_arrange = true;
return 0;
}
/** Titlebar object.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack
* \lfield align Alignment relative to the client.
* \lfield border_width Border width.
* \lfield border_color Border color.
* \lfield fg Foreground color.
* \lfield bg Background color.
*/
static int
luaA_titlebar_index(lua_State *L)
{
size_t len;
titlebar_t **titlebar = luaA_checkudata(L, 1, "titlebar");
const char *attr = luaL_checklstring(L, 2, &len);
if(luaA_usemetatable(L, 1, 2))
return 1;
switch(a_tokenize(attr, len))
{
case A_TK_ALIGN:
lua_pushstring(L, draw_align_tostr((*titlebar)->align));
break;
case A_TK_BORDER_WIDTH:
lua_pushnumber(L, (*titlebar)->border.width);
break;
case A_TK_BORDER_COLOR:
luaA_pushcolor(L, &(*titlebar)->border.color);
break;
case A_TK_FG:
luaA_pushcolor(L, &(*titlebar)->colors.fg);
break;
case A_TK_BG:
luaA_pushcolor(L, &(*titlebar)->colors.bg);
break;
default:
return 0;
}
return 1;
}
/** Convert a titlebar to a printable string.
* \param L The Lua VM state.
* \return The number of value pushed.
*
* \luastack
* \lvalue A titlebar.
* \lreturn A string.
*/
static int
luaA_titlebar_tostring(lua_State *L)
{
titlebar_t **p = luaA_checkudata(L, 1, "titlebar");
lua_pushfstring(L, "[titlebar udata(%p)]", *p);
return 1;
}
const struct luaL_reg awesome_titlebar_methods[] =
{
{ "__call", luaA_titlebar_new },
{ NULL, NULL }
};
const struct luaL_reg awesome_titlebar_meta[] =
{
{ "widget_add", luaA_titlebar_widget_add },
{ "widget_remove", luaA_titlebar_widget_remove },
{ "widget_get", luaA_titlebar_widget_get },
{ "client_get", luaA_titlebar_client_get },
{ "__index", luaA_titlebar_index },
{ "__newindex", luaA_titlebar_newindex },
{ "__eq", luaA_titlebar_eq },
{ "__gc", luaA_titlebar_gc },
{ "__tostring", luaA_titlebar_tostring },
{ NULL, NULL }
};
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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