586 lines
17 KiB
C
586 lines
17 KiB
C
/*
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* widget.c - widget managing
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*
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* Copyright © 2007-2009 Julien Danjou <julien@danjou.info>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <math.h>
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#include <xcb/xcb.h>
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#include <xcb/xcb_atom.h>
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#include "screen.h"
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#include "mouse.h"
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#include "widget.h"
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#include "wibox.h"
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#include "client.h"
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#include "common/atoms.h"
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#include "common/xutil.h"
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/** Collect a widget structure.
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* \param L The Lua VM state.
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* \return 0
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*/
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static int
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luaA_widget_gc(lua_State *L)
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{
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widget_t *widget = luaL_checkudata(L, 1, "widget");
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if(widget->destructor)
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widget->destructor(widget);
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button_array_wipe(&widget->buttons);
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return luaA_object_gc(L);
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}
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/** Delete a widget node structure.
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* \param node The node to destroy.
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*/
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void
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widget_node_delete(widget_node_t *node)
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{
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luaA_object_unref(globalconf.L, node->widget);
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}
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/** Get a widget node from a wibox by coords.
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* \param orientation Wibox orientation.
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* \param widgets The widget list.
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* \param width The container width.
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* \param height The container height.
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* \param x X coordinate of the widget.
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* \param y Y coordinate of the widget.
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* \return A widget.
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*/
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widget_t *
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widget_getbycoords(orientation_t orientation, widget_node_array_t *widgets,
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int width, int height, int16_t *x, int16_t *y)
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{
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int tmp;
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/* Need to transform coordinates like it was top/bottom */
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switch(orientation)
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{
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case South:
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tmp = *y;
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*y = width - *x;
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*x = tmp;
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break;
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case North:
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tmp = *y;
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*y = *x;
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*x = height - tmp;
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break;
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default:
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break;
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}
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foreach(w, *widgets)
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if(w->widget->isvisible
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&& *x >= w->geometry.x && *x < w->geometry.x + w->geometry.width
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&& *y >= w->geometry.y && *y < w->geometry.y + w->geometry.height)
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return w->widget;
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return NULL;
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}
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/** Convert a Lua table to a list of widget nodet.
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* \param L The Lua VM state.
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* \param widgets The linked list of widget node.
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*/
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static void
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luaA_table2widgets(lua_State *L, widget_node_array_t *widgets)
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{
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if(lua_istable(L, -1))
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{
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lua_pushnil(L);
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while(luaA_next(L, -2))
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luaA_table2widgets(L, widgets);
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/* remove the table */
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lua_pop(L, 1);
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}
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else
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{
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widget_t *widget = luaA_toudata(L, -1, "widget");
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if(widget)
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{
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widget_node_t w;
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p_clear(&w, 1);
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w.widget = luaA_object_ref(L, -1);
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widget_node_array_append(widgets, w);
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}
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else
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lua_pop(L, 1); /* remove value */
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}
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}
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/** Retrieve a list of widget geometries using a Lua layout function.
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* a table which contains the geometries is then pushed onto the stack
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* \param wibox The wibox.
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* \return True is everything is ok, false otherwise.
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* \todo What do we do if there's no layout defined?
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*/
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bool
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widget_geometries(wibox_t *wibox)
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{
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/* get the layout field of the widget table */
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if(wibox->widgets_table)
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{
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/* push wibox */
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luaA_object_push(globalconf.L, wibox);
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/* push widgets table */
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luaA_object_push_item(globalconf.L, -1, wibox->widgets_table);
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/* remove wibox */
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lua_remove(globalconf.L, -2);
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lua_getfield(globalconf.L, -1, "layout");
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}
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else
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lua_pushnil(globalconf.L);
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/* if the layout field is a function */
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if(lua_isfunction(globalconf.L, -1))
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{
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/* Push 1st argument: wibox geometry */
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area_t geometry = wibox->geometry;
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geometry.x = 0;
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geometry.y = 0;
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/* we need to exchange the width and height of the wibox window if it
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* it is rotated, so the layout function doesn't need to care about that
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*/
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if(wibox->orientation != East)
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{
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int i = geometry.height;
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geometry.height = geometry.width;
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geometry.width = i;
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}
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luaA_pusharea(globalconf.L, geometry);
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/* Re-push 2nd argument: widget table */
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lua_pushvalue(globalconf.L, -3);
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/* Push 3rd argument: wibox screen */
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lua_pushnumber(globalconf.L, screen_array_indexof(&globalconf.screens, wibox->screen));
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/* Re-push the layout function */
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lua_pushvalue(globalconf.L, -4);
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/* call the layout function with 3 arguments (wibox geometry, widget
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* table, screen) and wait for one result */
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if(!luaA_dofunction(globalconf.L, 3, 1))
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return false;
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lua_insert(globalconf.L, -3);
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lua_pop(globalconf.L, 2);
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}
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else
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{
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/* Remove the "nil function" */
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lua_pop(globalconf.L, 1);
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/* If no layout function has been specified, we just push a table with
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* geometries onto the stack. These geometries are nothing fancy, they
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* have x = y = 0 and their height and width set to the widgets demands
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* or the wibox size, depending on which is less.
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*/
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widget_node_array_t *widgets = &wibox->widgets;
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widget_node_array_wipe(widgets);
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widget_node_array_init(widgets);
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/* push wibox */
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luaA_object_push(globalconf.L, wibox);
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/* push widgets table */
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luaA_object_push_item(globalconf.L, -1, wibox->widgets_table);
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/* remove wibox */
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lua_remove(globalconf.L, -2);
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luaA_table2widgets(globalconf.L, widgets);
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lua_newtable(globalconf.L);
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for(int i = 0; i < widgets->len; i++)
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{
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lua_pushnumber(globalconf.L, i + 1);
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widget_t *widget = widgets->tab[i].widget;
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lua_pushnumber(globalconf.L, screen_array_indexof(&globalconf.screens, wibox->screen));
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area_t geometry = widget->extents(globalconf.L, widget);
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lua_pop(globalconf.L, 1);
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geometry.x = geometry.y = 0;
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geometry.width = MIN(wibox->geometry.width, geometry.width);
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geometry.height = MIN(wibox->geometry.height, geometry.height);
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luaA_pusharea(globalconf.L, geometry);
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lua_settable(globalconf.L, -3);
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}
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}
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return true;
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}
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/** Render a list of widgets.
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* \param wibox The wibox.
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* \todo Remove GC.
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*/
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void
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widget_render(wibox_t *wibox)
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{
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lua_State *L = globalconf.L;
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draw_context_t *ctx = &wibox->ctx;
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area_t rectangle = { 0, 0, 0, 0 };
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color_t col;
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rectangle.width = ctx->width;
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rectangle.height = ctx->height;
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if (!widget_geometries(wibox))
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return;
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if(ctx->bg.alpha != 0xffff)
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{
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int x = wibox->geometry.x, y = wibox->geometry.y;
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xcb_get_property_reply_t *prop_r;
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char *data;
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xcb_pixmap_t rootpix;
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xcb_get_property_cookie_t prop_c;
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xcb_screen_t *s = xutil_screen_get(globalconf.connection, ctx->phys_screen);
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prop_c = xcb_get_property_unchecked(globalconf.connection, false, s->root, _XROOTPMAP_ID,
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PIXMAP, 0, 1);
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if((prop_r = xcb_get_property_reply(globalconf.connection, prop_c, NULL)))
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{
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if(prop_r->value_len
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&& (data = xcb_get_property_value(prop_r))
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&& (rootpix = *(xcb_pixmap_t *) data))
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switch(wibox->orientation)
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{
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case North:
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draw_rotate(ctx,
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rootpix, ctx->pixmap,
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s->width_in_pixels, s->height_in_pixels,
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ctx->width, ctx->height,
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M_PI_2,
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y + ctx->width,
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- x);
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break;
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case South:
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draw_rotate(ctx,
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rootpix, ctx->pixmap,
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s->width_in_pixels, s->height_in_pixels,
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ctx->width, ctx->height,
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- M_PI_2,
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- y,
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x + ctx->height);
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break;
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case East:
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xcb_copy_area(globalconf.connection, rootpix,
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wibox->pixmap, wibox->gc,
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x, y,
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0, 0,
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ctx->width, ctx->height);
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break;
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}
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p_delete(&prop_r);
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}
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}
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widget_node_array_t *widgets = &wibox->widgets;
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widget_node_array_wipe(widgets);
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widget_node_array_init(widgets);
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/* push wibox */
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luaA_object_push(globalconf.L, wibox);
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/* push widgets table */
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luaA_object_push_item(globalconf.L, -1, wibox->widgets_table);
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/* remove wibox */
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lua_remove(globalconf.L, -2);
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luaA_table2widgets(L, widgets);
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/* get computed geometries */
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for(unsigned int i = 0; i < lua_objlen(L, -1); i++)
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{
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lua_pushnumber(L, i + 1);
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lua_gettable(L, -2);
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widgets->tab[i].geometry.x = luaA_getopt_number(L, -1, "x", wibox->geometry.x);
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widgets->tab[i].geometry.y = luaA_getopt_number(L, -1, "y", wibox->geometry.y);
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widgets->tab[i].geometry.width = luaA_getopt_number(L, -1, "width", 1);
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widgets->tab[i].geometry.height = luaA_getopt_number(L, -1, "height", 1);
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lua_pop(L, 1);
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}
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lua_pop(L, 1);
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/* draw background image, only if the background color is not opaque */
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if(wibox->bg_image && ctx->bg.alpha != 0xffff)
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draw_image(ctx, 0, 0, 1.0, wibox->bg_image);
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/* draw background color */
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xcolor_to_color(&ctx->bg, &col);
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draw_rectangle(ctx, rectangle, 1.0, true, &col);
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/* draw everything! */
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for(int i = 0; i < widgets->len; i++)
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if(widgets->tab[i].widget->isvisible)
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widgets->tab[i].widget->draw(widgets->tab[i].widget,
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ctx, widgets->tab[i].geometry, wibox);
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switch(wibox->orientation)
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{
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case South:
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draw_rotate(ctx, ctx->pixmap, wibox->pixmap,
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ctx->width, ctx->height,
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ctx->height, ctx->width,
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M_PI_2, ctx->height, 0);
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break;
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case North:
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draw_rotate(ctx, ctx->pixmap, wibox->pixmap,
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ctx->width, ctx->height,
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ctx->height, ctx->width,
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- M_PI_2, 0, ctx->width);
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break;
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case East:
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break;
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}
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}
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/** Invalidate widgets which should be refresh depending on their types.
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* \param type Widget type to invalidate.
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*/
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void
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widget_invalidate_bytype(widget_constructor_t *type)
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{
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foreach(wibox, globalconf.wiboxes)
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foreach(wnode, (*wibox)->widgets)
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if(wnode->widget->type == type)
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{
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(*wibox)->need_update = true;
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break;
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}
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}
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/** Set a wibox needs update because it has widget, or redraw a titlebar.
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* \param widget The widget to look for.
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*/
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void
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widget_invalidate_bywidget(widget_t *widget)
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{
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foreach(wibox, globalconf.wiboxes)
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if(!(*wibox)->need_update)
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foreach(wnode, (*wibox)->widgets)
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if(wnode->widget == widget)
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{
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(*wibox)->need_update = true;
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break;
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}
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foreach(_c, globalconf.clients)
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{
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client_t *c = *_c;
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if(c->titlebar && !c->titlebar->need_update)
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for(int j = 0; j < c->titlebar->widgets.len; j++)
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if(c->titlebar->widgets.tab[j].widget == widget)
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{
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c->titlebar->need_update = true;
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break;
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}
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}
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}
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/** Create a new widget.
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* \param L The Lua VM state.
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*
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* \luastack
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* \lparam A table with at least a type value.
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* \lreturn A brand new widget.
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*/
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static int
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luaA_widget_new(lua_State *L)
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{
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const char *type;
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widget_t *w;
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widget_constructor_t *wc = NULL;
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size_t len;
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luaA_checktable(L, 2);
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type = luaA_getopt_lstring(L, 2, "type", NULL, &len);
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switch(a_tokenize(type, len))
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{
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case A_TK_TEXTBOX:
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wc = widget_textbox;
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break;
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case A_TK_PROGRESSBAR:
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wc = widget_progressbar;
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break;
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case A_TK_GRAPH:
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wc = widget_graph;
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break;
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case A_TK_SYSTRAY:
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wc = widget_systray;
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break;
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case A_TK_IMAGEBOX:
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wc = widget_imagebox;
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break;
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default:
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break;
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}
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if(wc)
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{
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w = widget_new(L);
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wc(w);
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}
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else
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{
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luaA_warn(L, "unkown widget type: %s", type);
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return 0;
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}
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w->type = wc;
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/* Set visible by default. */
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w->isvisible = true;
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return 1;
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}
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/** Get or set mouse buttons bindings to a widget.
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* \param L The Lua VM state.
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*
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* \luastack
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* \lvalue A widget.
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* \lparam An array of mouse button bindings objects, or nothing.
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* \return The array of mouse button bindings objects of this widget.
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*/
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static int
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luaA_widget_buttons(lua_State *L)
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{
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widget_t *widget = luaL_checkudata(L, 1, "widget");
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if(lua_gettop(L) == 2)
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{
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luaA_button_array_set(L, 1, 2, &widget->buttons);
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return 1;
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}
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return luaA_button_array_get(L, 1, &widget->buttons);
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}
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/** Generic widget.
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* \param L The Lua VM state.
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* \return The number of elements pushed on stack.
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* \luastack
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* \lfield visible The widget visibility.
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* \lfield mouse_enter A function to execute when the mouse enter the widget.
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* \lfield mouse_leave A function to execute when the mouse leave the widget.
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*/
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static int
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luaA_widget_index(lua_State *L)
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{
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size_t len;
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widget_t *widget = luaL_checkudata(L, 1, "widget");
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const char *buf = luaL_checklstring(L, 2, &len);
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awesome_token_t token;
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if(luaA_usemetatable(L, 1, 2))
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return 1;
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switch((token = a_tokenize(buf, len)))
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{
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case A_TK_VISIBLE:
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lua_pushboolean(L, widget->isvisible);
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return 1;
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case A_TK_MOUSE_ENTER:
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return luaA_object_push_item(L, 1, widget->mouse_enter);
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case A_TK_MOUSE_LEAVE:
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return luaA_object_push_item(L, 1, widget->mouse_leave);
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default:
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break;
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}
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return widget->index ? widget->index(L, token) : 0;
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}
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/** Generic widget newindex.
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* \param L The Lua VM state.
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* \return The number of elements pushed on stack.
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*/
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static int
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luaA_widget_newindex(lua_State *L)
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{
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size_t len;
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widget_t *widget = luaL_checkudata(L, 1, "widget");
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const char *buf = luaL_checklstring(L, 2, &len);
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awesome_token_t token;
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switch((token = a_tokenize(buf, len)))
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{
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case A_TK_VISIBLE:
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widget->isvisible = luaA_checkboolean(L, 3);
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break;
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case A_TK_MOUSE_ENTER:
|
|
luaA_checkfunction(L, 3);
|
|
luaA_object_unref_item(L, 1, widget->mouse_enter);
|
|
widget->mouse_enter = luaA_object_ref_item(L, 1, 3);
|
|
return 0;
|
|
case A_TK_MOUSE_LEAVE:
|
|
luaA_checkfunction(L, 3);
|
|
luaA_object_unref_item(L, 1, widget->mouse_leave);
|
|
widget->mouse_leave = luaA_object_ref_item(L, 1, 3);
|
|
return 0;
|
|
default:
|
|
return widget->newindex ? widget->newindex(L, token) : 0;
|
|
}
|
|
|
|
widget_invalidate_bywidget(widget);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
luaA_widget_extents(lua_State *L)
|
|
{
|
|
widget_t *widget = luaL_checkudata(L, 1, "widget");
|
|
area_t g = {
|
|
.x = 0,
|
|
.y = 0,
|
|
.width = 0,
|
|
.height = 0
|
|
};
|
|
|
|
if(widget->extents)
|
|
g = widget->extents(L, widget);
|
|
|
|
lua_newtable(L);
|
|
lua_pushnumber(L, g.width);
|
|
lua_setfield(L, -2, "width");
|
|
lua_pushnumber(L, g.height);
|
|
lua_setfield(L, -2, "height");
|
|
|
|
return 1;
|
|
}
|
|
|
|
const struct luaL_reg awesome_widget_methods[] =
|
|
{
|
|
LUA_CLASS_METHODS(widget)
|
|
{ "__call", luaA_widget_new },
|
|
{ NULL, NULL }
|
|
};
|
|
const struct luaL_reg awesome_widget_meta[] =
|
|
{
|
|
LUA_OBJECT_META(widget)
|
|
{ "buttons", luaA_widget_buttons },
|
|
{ "extents", luaA_widget_extents },
|
|
{ "__index", luaA_widget_index },
|
|
{ "__newindex", luaA_widget_newindex },
|
|
{ "__gc", luaA_widget_gc },
|
|
{ NULL, NULL }
|
|
};
|
|
|
|
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
|