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awesome/objects/drawin.c

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/*
* drawin.c - drawin functions
*
* Copyright © 2008-2009 Julien Danjou <julien@danjou.info>
* Copyright © 2010 Uli Schlachter <psychon@znc.in>
*
* 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.
*
*/
/** awesome drawin API
*
* Furthermore to the classes described here, one can also use signals as
* described in @{signals} and X properties as described in @{xproperties}.
*
* @author Julien Danjou &lt;julien@danjou.info&gt;
* @copyright 2008-2009 Julien Danjou
* @release @AWESOME_VERSION@
* @classmod drawin
*/
#include "drawin.h"
#include "common/atoms.h"
#include "common/xcursor.h"
#include "common/xutil.h"
#include "event.h"
#include "ewmh.h"
#include "objects/client.h"
#include "objects/screen.h"
#include "systray.h"
#include "xwindow.h"
#include "math.h"
#include <cairo-xcb.h>
#include <xcb/shape.h>
/** Drawin object.
*
* @field border_width Border width.
* @field border_color Border color.
* @field ontop On top of other windows.
* @field cursor The mouse cursor.
* @field visible Visibility.
* @field opacity The opacity of the drawin, between 0 and 1.
* @field type The window type (desktop, normal, dock, …).
* @field x The x coordinates.
* @field y The y coordinates.
* @field width The width of the drawin.
* @field height The height of the drawin.
* @field drawable The drawin's drawable.
* @field window The X window id.
* @field shape_bounding The drawin's bounding shape as a (native) cairo surface.
* @field shape_clip The drawin's clip shape as a (native) cairo surface.
* @table drawin
*/
/**
* @signal property::geometry
*/
/**
* @signal property::shape_bounding
*/
/**
* @signal property::shape_clip
*/
/**
* @signal property::border_width
*/
/**
* @signal property::cursor
*/
/**
* @signal property::height
*/
/**
* @signal property::ontop
*/
/**
* @signal property::visible
*/
/**
* @signal property::width
*/
/**
* @signal property::x
*/
/**
* @signal property::y
*/
/** Get or set mouse buttons bindings to a drawin.
*
* @param buttons_table A table of buttons objects, or nothing.
* @function buttons
*/
/** Get or set drawin struts.
*
* @param strut A table with new strut, or nothing
* @return The drawin strut in a table.
* @function struts
*/
/** Get the number of instances.
*
* @return The number of drawin objects alive.
* @function instances
*/
/** Set a __index metamethod for all drawin instances.
* @tparam function cb The meta-method
* @function set_index_miss_handler
*/
/** Set a __newindex metamethod for all drawin instances.
* @tparam function cb The meta-method
* @function set_newindex_miss_handler
*/
LUA_OBJECT_FUNCS(drawin_class, drawin_t, drawin)
/** Kick out systray windows.
*/
static void
drawin_systray_kickout(drawin_t *w)
{
if(globalconf.systray.parent == w)
{
/* Who! Check that we're not deleting a drawin with a systray, because it
* may be its parent. If so, we reparent to root before, otherwise it will
* hurt very much. */
systray_cleanup();
xcb_reparent_window(globalconf.connection,
globalconf.systray.window,
globalconf.screen->root,
-512, -512);
globalconf.systray.parent = NULL;
}
}
static void
drawin_wipe(drawin_t *w)
{
/* The drawin must already be unmapped, else it
* couldn't be garbage collected -> no unmap needed */
p_delete(&w->cursor);
if(w->window)
{
/* Make sure we don't accidentally kill the systray window */
drawin_systray_kickout(w);
xcb_destroy_window(globalconf.connection, w->window);
w->window = XCB_NONE;
}
/* No unref needed because we are being garbage collected */
w->drawable = NULL;
}
static void
drawin_update_drawing(lua_State *L, int widx)
{
drawin_t *w = luaA_checkudata(L, widx, &drawin_class);
luaA_object_push_item(L, widx, w->drawable);
drawable_set_geometry(L, -1, w->geometry);
lua_pop(L, 1);
}
/** Refresh the window content by copying its pixmap data to its window.
* \param w The drawin to refresh.
*/
static inline void
drawin_refresh_pixmap(drawin_t *w)
{
drawin_refresh_pixmap_partial(w, 0, 0, w->geometry.width, w->geometry.height);
}
static void
drawin_apply_moveresize(drawin_t *w)
{
if (!w->geometry_dirty)
return;
w->geometry_dirty = false;
client_ignore_enterleave_events();
xcb_configure_window(globalconf.connection, w->window,
XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y
| XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT,
(const uint32_t [])
{
w->geometry.x,
w->geometry.y,
w->geometry.width,
w->geometry.height
});
client_restore_enterleave_events();
}
void
drawin_refresh(void)
{
foreach(item, globalconf.drawins)
{
drawin_apply_moveresize(*item);
window_border_refresh((window_t *) *item);
}
}
/** Move and/or resize a drawin
* \param L The Lua VM state.
* \param udx The index of the drawin.
* \param geometry The new geometry.
*/
static void
drawin_moveresize(lua_State *L, int udx, area_t geometry)
{
drawin_t *w = luaA_checkudata(L, udx, &drawin_class);
area_t old_geometry = w->geometry;
w->geometry = geometry;
if(w->geometry.width <= 0)
w->geometry.width = old_geometry.width;
if(w->geometry.height <= 0)
w->geometry.height = old_geometry.height;
w->geometry_dirty = true;
drawin_update_drawing(L, udx);
if (!AREA_EQUAL(old_geometry, w->geometry))
luaA_object_emit_signal(L, udx, "property::geometry", 0);
if (old_geometry.x != w->geometry.x)
luaA_object_emit_signal(L, udx, "property::x", 0);
if (old_geometry.y != w->geometry.y)
luaA_object_emit_signal(L, udx, "property::y", 0);
if (old_geometry.width != w->geometry.width)
luaA_object_emit_signal(L, udx, "property::width", 0);
if (old_geometry.height != w->geometry.height)
luaA_object_emit_signal(L, udx, "property::height", 0);
screen_t *old_screen = screen_getbycoord(old_geometry.x, old_geometry.y);
screen_t *new_screen = screen_getbycoord(w->geometry.x, w->geometry.y);
if (old_screen != new_screen && strut_has_value(&w->strut))
{
screen_update_workarea(old_screen);
screen_update_workarea(new_screen);
}
}
/** Refresh the window content by copying its pixmap data to its window.
* \param drawin The drawin to refresh.
* \param x The copy starting point x component.
* \param y The copy starting point y component.
* \param w The copy width from the x component.
* \param h The copy height from the y component.
*/
void
drawin_refresh_pixmap_partial(drawin_t *drawin,
int16_t x, int16_t y,
uint16_t w, uint16_t h)
{
if (!drawin->drawable || !drawin->drawable->pixmap || !drawin->drawable->refreshed)
return;
/* Make sure it really has the size it should have */
drawin_apply_moveresize(drawin);
/* Make cairo do all pending drawing */
cairo_surface_flush(drawin->drawable->surface);
xcb_copy_area(globalconf.connection, drawin->drawable->pixmap,
drawin->window, globalconf.gc, x, y, x, y,
w, h);
}
static void
drawin_map(lua_State *L, int widx)
{
drawin_t *drawin = luaA_checkudata(L, widx, &drawin_class);
/* Activate BMA */
client_ignore_enterleave_events();
/* Apply any pending changes */
drawin_apply_moveresize(drawin);
/* Map the drawin */
xcb_map_window(globalconf.connection, drawin->window);
/* Deactivate BMA */
client_restore_enterleave_events();
/* Stack this drawin correctly */
stack_windows();
/* Add it to the list of visible drawins */
drawin_array_append(&globalconf.drawins, drawin);
/* Make sure it has a surface */
if(drawin->drawable->surface == NULL)
drawin_update_drawing(L, widx);
}
static void
drawin_unmap(drawin_t *drawin)
{
xcb_unmap_window(globalconf.connection, drawin->window);
foreach(item, globalconf.drawins)
if(*item == drawin)
{
drawin_array_remove(&globalconf.drawins, item);
break;
}
}
/** Get a drawin by its window.
* \param win The window id.
* \return A drawin if found, NULL otherwise.
*/
drawin_t *
drawin_getbywin(xcb_window_t win)
{
foreach(w, globalconf.drawins)
if((*w)->window == win)
return *w;
return NULL;
}
/** Set a drawin visible or not.
* \param L The Lua VM state.
* \param udx The drawin.
* \param v The visible value.
*/
static void
drawin_set_visible(lua_State *L, int udx, bool v)
{
drawin_t *drawin = luaA_checkudata(L, udx, &drawin_class);
if(v != drawin->visible)
{
drawin->visible = v;
if(drawin->visible)
{
drawin_map(L, udx);
/* duplicate drawin */
lua_pushvalue(L, udx);
/* ref it */
luaA_object_ref_class(L, -1, &drawin_class);
}
else
{
/* Active BMA */
client_ignore_enterleave_events();
/* Unmap window */
drawin_unmap(drawin);
/* Active BMA */
client_restore_enterleave_events();
/* unref it */
luaA_object_unref(L, drawin);
}
luaA_object_emit_signal(L, udx, "property::visible", 0);
if(strut_has_value(&drawin->strut))
{
screen_update_workarea(
screen_getbycoord(drawin->geometry.x, drawin->geometry.y));
}
}
}
static drawin_t *
drawin_allocator(lua_State *L)
{
xcb_screen_t *s = globalconf.screen;
drawin_t *w = drawin_new(L);
w->visible = false;
w->opacity = -1;
w->cursor = a_strdup("left_ptr");
w->geometry.width = 1;
w->geometry.height = 1;
w->geometry_dirty = false;
w->type = _NET_WM_WINDOW_TYPE_NORMAL;
drawable_allocator(L, (drawable_refresh_callback *) drawin_refresh_pixmap, w);
w->drawable = luaA_object_ref_item(L, -2, -1);
w->window = xcb_generate_id(globalconf.connection);
xcb_create_window(globalconf.connection, globalconf.default_depth, w->window, s->root,
w->geometry.x, w->geometry.y,
w->geometry.width, w->geometry.height,
w->border_width, XCB_COPY_FROM_PARENT, globalconf.visual->visual_id,
XCB_CW_BORDER_PIXEL | XCB_CW_BIT_GRAVITY
| XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK | XCB_CW_COLORMAP
| XCB_CW_CURSOR,
(const uint32_t [])
{
w->border_color.pixel,
XCB_GRAVITY_NORTH_WEST,
1,
XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT
| XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_ENTER_WINDOW
| XCB_EVENT_MASK_LEAVE_WINDOW | XCB_EVENT_MASK_STRUCTURE_NOTIFY
| XCB_EVENT_MASK_POINTER_MOTION | XCB_EVENT_MASK_BUTTON_PRESS
| XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_EXPOSURE
| XCB_EVENT_MASK_PROPERTY_CHANGE,
globalconf.default_cmap,
xcursor_new(globalconf.cursor_ctx, xcursor_font_fromstr(w->cursor))
});
xwindow_set_class_instance(w->window);
xwindow_set_name_static(w->window, "Awesome drawin");
/* Set the right properties */
ewmh_update_window_type(w->window, window_translate_type(w->type));
ewmh_update_strut(w->window, &w->strut);
return w;
}
/** Create a new drawin.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
*/
static int
luaA_drawin_new(lua_State *L)
{
luaA_class_new(L, &drawin_class);
return 1;
}
/** Get or set drawin geometry. That's the same as accessing or setting the x,
* y, width or height properties of a drawin.
*
* @param A table with coordinates to modify.
* @return A table with drawin coordinates and geometry.
* @function geometry
*/
static int
luaA_drawin_geometry(lua_State *L)
{
drawin_t *drawin = luaA_checkudata(L, 1, &drawin_class);
if(lua_gettop(L) == 2)
{
area_t wingeom;
luaA_checktable(L, 2);
wingeom.x = round(luaA_getopt_number_range(L, 2, "x", drawin->geometry.x, MIN_X11_COORDINATE, MAX_X11_COORDINATE));
wingeom.y = round(luaA_getopt_number_range(L, 2, "y", drawin->geometry.y, MIN_X11_COORDINATE, MAX_X11_COORDINATE));
wingeom.width = ceil(luaA_getopt_number_range(L, 2, "width", drawin->geometry.width, MIN_X11_SIZE, MAX_X11_SIZE));
wingeom.height = ceil(luaA_getopt_number_range(L, 2, "height", drawin->geometry.height, MIN_X11_SIZE, MAX_X11_SIZE));
if(wingeom.width > 0 && wingeom.height > 0)
drawin_moveresize(L, 1, wingeom);
}
return luaA_pusharea(L, drawin->geometry);
}
LUA_OBJECT_EXPORT_PROPERTY(drawin, drawin_t, ontop, lua_pushboolean)
LUA_OBJECT_EXPORT_PROPERTY(drawin, drawin_t, cursor, lua_pushstring)
LUA_OBJECT_EXPORT_PROPERTY(drawin, drawin_t, visible, lua_pushboolean)
static int
luaA_drawin_set_x(lua_State *L, drawin_t *drawin)
{
int x = round(luaA_checknumber_range(L, -1, MIN_X11_COORDINATE, MAX_X11_COORDINATE));
drawin_moveresize(L, -3, (area_t) { .x = x,
.y = drawin->geometry.y,
.width = drawin->geometry.width,
.height = drawin->geometry.height });
return 0;
}
static int
luaA_drawin_get_x(lua_State *L, drawin_t *drawin)
{
lua_pushinteger(L, drawin->geometry.x);
return 1;
}
static int
luaA_drawin_set_y(lua_State *L, drawin_t *drawin)
{
int y = round(luaA_checknumber_range(L, -1, MIN_X11_COORDINATE, MAX_X11_COORDINATE));
drawin_moveresize(L, -3, (area_t) { .x = drawin->geometry.x,
.y = y,
.width = drawin->geometry.width,
.height = drawin->geometry.height });
return 0;
}
static int
luaA_drawin_get_y(lua_State *L, drawin_t *drawin)
{
lua_pushinteger(L, drawin->geometry.y);
return 1;
}
static int
luaA_drawin_set_width(lua_State *L, drawin_t *drawin)
{
int width = ceil(luaA_checknumber_range(L, -1, MIN_X11_SIZE, MAX_X11_SIZE));
drawin_moveresize(L, -3, (area_t) { .x = drawin->geometry.x,
.y = drawin->geometry.y,
.width = width,
.height = drawin->geometry.height });
return 0;
}
static int
luaA_drawin_get_width(lua_State *L, drawin_t *drawin)
{
lua_pushinteger(L, drawin->geometry.width);
return 1;
}
static int
luaA_drawin_set_height(lua_State *L, drawin_t *drawin)
{
int height = ceil(luaA_checknumber_range(L, -1, MIN_X11_SIZE, MAX_X11_SIZE));
drawin_moveresize(L, -3, (area_t) { .x = drawin->geometry.x,
.y = drawin->geometry.y,
.width = drawin->geometry.width,
.height = height });
return 0;
}
static int
luaA_drawin_get_height(lua_State *L, drawin_t *drawin)
{
lua_pushinteger(L, drawin->geometry.height);
return 1;
}
/** Set the drawin on top status.
* \param L The Lua VM state.
* \param drawin The drawin object.
* \return The number of elements pushed on stack.
*/
static int
luaA_drawin_set_ontop(lua_State *L, drawin_t *drawin)
{
bool b = luaA_checkboolean(L, -1);
if(b != drawin->ontop)
{
drawin->ontop = b;
stack_windows();
luaA_object_emit_signal(L, -3, "property::ontop", 0);
}
return 0;
}
/** Set the drawin cursor.
* \param L The Lua VM state.
* \param drawin The drawin object.
* \return The number of elements pushed on stack.
*/
static int
luaA_drawin_set_cursor(lua_State *L, drawin_t *drawin)
{
const char *buf = luaL_checkstring(L, -1);
if(buf)
{
uint16_t cursor_font = xcursor_font_fromstr(buf);
if(cursor_font)
{
xcb_cursor_t cursor = xcursor_new(globalconf.cursor_ctx, cursor_font);
p_delete(&drawin->cursor);
drawin->cursor = a_strdup(buf);
xwindow_set_cursor(drawin->window, cursor);
luaA_object_emit_signal(L, -3, "property::cursor", 0);
}
}
return 0;
}
/** Set the drawin visibility.
* \param L The Lua VM state.
* \param drawin The drawin object.
* \return The number of elements pushed on stack.
*/
static int
luaA_drawin_set_visible(lua_State *L, drawin_t *drawin)
{
drawin_set_visible(L, -3, luaA_checkboolean(L, -1));
return 0;
}
/** Get a drawin's drawable
* \param L The Lua VM state.
* \param drawin The drawin object.
* \return The number of elements pushed on stack.
*/
static int
luaA_drawin_get_drawable(lua_State *L, drawin_t *drawin)
{
luaA_object_push_item(L, -2, drawin->drawable);
return 1;
}
/** Get the drawin's bounding shape.
* \param L The Lua VM state.
* \param drawin The drawin object.
* \return The number of elements pushed on stack.
*/
static int
luaA_drawin_get_shape_bounding(lua_State *L, drawin_t *drawin)
{
cairo_surface_t *surf = xwindow_get_shape(drawin->window, XCB_SHAPE_SK_BOUNDING);
if (!surf)
return 0;
/* lua has to make sure to free the ref or we have a leak */
lua_pushlightuserdata(L, surf);
return 1;
}
/** Set the drawin's bounding shape.
* \param L The Lua VM state.
* \param drawin The drawin object.
* \return The number of elements pushed on stack.
*/
static int
luaA_drawin_set_shape_bounding(lua_State *L, drawin_t *drawin)
{
cairo_surface_t *surf = NULL;
if(!lua_isnil(L, -1))
surf = (cairo_surface_t *)lua_touserdata(L, -1);
/* The drawin might have been resized to a larger size. Apply that. */
drawin_apply_moveresize(drawin);
xwindow_set_shape(drawin->window,
drawin->geometry.width + 2*drawin->border_width,
drawin->geometry.height + 2*drawin->border_width,
XCB_SHAPE_SK_BOUNDING, surf, -drawin->border_width);
luaA_object_emit_signal(L, -3, "property::shape_bounding", 0);
return 0;
}
/** Get the drawin's clip shape.
* \param L The Lua VM state.
* \param drawin The drawin object.
* \return The number of elements pushed on stack.
*/
static int
luaA_drawin_get_shape_clip(lua_State *L, drawin_t *drawin)
{
cairo_surface_t *surf = xwindow_get_shape(drawin->window, XCB_SHAPE_SK_CLIP);
if (!surf)
return 0;
/* lua has to make sure to free the ref or we have a leak */
lua_pushlightuserdata(L, surf);
return 1;
}
/** Set the drawin's clip shape.
* \param L The Lua VM state.
* \param drawin The drawin object.
* \return The number of elements pushed on stack.
*/
static int
luaA_drawin_set_shape_clip(lua_State *L, drawin_t *drawin)
{
cairo_surface_t *surf = NULL;
if(!lua_isnil(L, -1))
surf = (cairo_surface_t *)lua_touserdata(L, -1);
/* The drawin might have been resized to a larger size. Apply that. */
drawin_apply_moveresize(drawin);
xwindow_set_shape(drawin->window, drawin->geometry.width, drawin->geometry.height,
XCB_SHAPE_SK_CLIP, surf, 0);
luaA_object_emit_signal(L, -3, "property::shape_clip", 0);
return 0;
}
void
drawin_class_setup(lua_State *L)
{
static const struct luaL_Reg drawin_methods[] =
{
LUA_CLASS_METHODS(drawin)
{ "__call", luaA_drawin_new },
{ NULL, NULL }
};
static const struct luaL_Reg drawin_meta[] =
{
LUA_OBJECT_META(drawin)
LUA_CLASS_META
{ "geometry", luaA_drawin_geometry },
{ NULL, NULL },
};
luaA_class_setup(L, &drawin_class, "drawin", &window_class,
(lua_class_allocator_t) drawin_allocator,
(lua_class_collector_t) drawin_wipe,
NULL,
luaA_class_index_miss_property, luaA_class_newindex_miss_property,
drawin_methods, drawin_meta);
luaA_class_add_property(&drawin_class, "drawable",
NULL,
(lua_class_propfunc_t) luaA_drawin_get_drawable,
NULL);
luaA_class_add_property(&drawin_class, "visible",
(lua_class_propfunc_t) luaA_drawin_set_visible,
(lua_class_propfunc_t) luaA_drawin_get_visible,
(lua_class_propfunc_t) luaA_drawin_set_visible);
luaA_class_add_property(&drawin_class, "ontop",
(lua_class_propfunc_t) luaA_drawin_set_ontop,
(lua_class_propfunc_t) luaA_drawin_get_ontop,
(lua_class_propfunc_t) luaA_drawin_set_ontop);
luaA_class_add_property(&drawin_class, "cursor",
(lua_class_propfunc_t) luaA_drawin_set_cursor,
(lua_class_propfunc_t) luaA_drawin_get_cursor,
(lua_class_propfunc_t) luaA_drawin_set_cursor);
luaA_class_add_property(&drawin_class, "x",
(lua_class_propfunc_t) luaA_drawin_set_x,
(lua_class_propfunc_t) luaA_drawin_get_x,
(lua_class_propfunc_t) luaA_drawin_set_x);
luaA_class_add_property(&drawin_class, "y",
(lua_class_propfunc_t) luaA_drawin_set_y,
(lua_class_propfunc_t) luaA_drawin_get_y,
(lua_class_propfunc_t) luaA_drawin_set_y);
luaA_class_add_property(&drawin_class, "width",
(lua_class_propfunc_t) luaA_drawin_set_width,
(lua_class_propfunc_t) luaA_drawin_get_width,
(lua_class_propfunc_t) luaA_drawin_set_width);
luaA_class_add_property(&drawin_class, "height",
(lua_class_propfunc_t) luaA_drawin_set_height,
(lua_class_propfunc_t) luaA_drawin_get_height,
(lua_class_propfunc_t) luaA_drawin_set_height);
luaA_class_add_property(&drawin_class, "type",
(lua_class_propfunc_t) luaA_window_set_type,
(lua_class_propfunc_t) luaA_window_get_type,
(lua_class_propfunc_t) luaA_window_set_type);
luaA_class_add_property(&drawin_class, "shape_bounding",
(lua_class_propfunc_t) luaA_drawin_set_shape_bounding,
(lua_class_propfunc_t) luaA_drawin_get_shape_bounding,
(lua_class_propfunc_t) luaA_drawin_set_shape_bounding);
luaA_class_add_property(&drawin_class, "shape_clip",
(lua_class_propfunc_t) luaA_drawin_set_shape_clip,
(lua_class_propfunc_t) luaA_drawin_get_shape_clip,
(lua_class_propfunc_t) luaA_drawin_set_shape_clip);
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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