576 lines
16 KiB
C
576 lines
16 KiB
C
/*
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* widget.c - widget managing
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*
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* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
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* Copyright © 2007 Aldo Cortesi <aldo@nullcube.com>
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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_aux.h>
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#include "widget.h"
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#include "statusbar.h"
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#include "titlebar.h"
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#include "event.h"
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#include "lua.h"
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extern awesome_t globalconf;
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#include "widgetgen.h"
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/** Compute offset for drawing the first pixel of a widget.
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* \param barwidth The statusbar width.
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* \param widgetwidth The widget width.
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* \param alignment The widget alignment on statusbar.
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* \return The x coordinate to draw at.
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*/
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int
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widget_calculate_offset(int barwidth, int widgetwidth, int offset, int alignment)
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{
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switch(alignment)
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{
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case AlignLeft:
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case AlignFlex:
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return offset;
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}
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return barwidth - offset - widgetwidth;
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}
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/** Find a widget on a screen by its name.
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* \param name The widget name.
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* \return A widget pointer.
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*/
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widget_t *
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widget_getbyname(const char *name)
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{
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widget_node_t *widget;
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statusbar_t *sb;
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int screen;
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for(screen = 0; screen < globalconf.screens_info->nscreen; screen++)
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for(sb = globalconf.screens[screen].statusbar; sb; sb = sb->next)
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for(widget = sb->widgets; widget; widget = widget->next)
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if(!a_strcmp(name, widget->widget->name))
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return widget->widget;
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return NULL;
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}
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/** Common function for button press event on widget.
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* It will look into configuration to find the callback function to call.
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* \param w The widget node.
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* \param ev The button press event the widget received.
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* \param screen The screen number.
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* \param p The object where user clicked.
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* \param type The object type.
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*/
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static void
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widget_common_button_press(widget_node_t *w,
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xcb_button_press_event_t *ev,
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int screen __attribute__ ((unused)),
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void *p,
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awesome_type_t type)
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{
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button_t *b;
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for(b = w->widget->buttons; b; b = b->next)
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if(ev->detail == b->button && CLEANMASK(ev->state) == b->mod && b->fct)
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{
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luaA_pushpointer(p, type);
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luaA_dofunction(globalconf.L, b->fct, 1);
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}
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}
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/** Common tell function for widget, which only warn user that widget
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* cannot be told anything.
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* \param widget The widget.
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* \param property Unused argument.
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* \param new_value Unused argument.
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* \return The status of the command, which is always an error in this case.
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*/
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static widget_tell_status_t
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widget_common_tell(widget_t *widget,
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const char *property __attribute__ ((unused)),
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const char *new_value __attribute__ ((unused)))
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{
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warn("%s widget does not accept commands.", widget->name);
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return WIDGET_ERROR_CUSTOM;
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}
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/** Render a list of widgets.
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* \param wnode The list of widgets.
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* \param ctx The draw context where to render.
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* \param rotate_px The rotate pixmap: where to rotate and render the final
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* \param screen The logical screen used to render.
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* \param position The object position.
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* \param x The x coordinates of the object.
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* \param y The y coordinates of the object.
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* pixmap when the object position is right or left.
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* \param object The object pointer.
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* \todo Remove GC.
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*/
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void
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widget_render(widget_node_t *wnode, draw_context_t *ctx, xcb_gcontext_t gc, xcb_pixmap_t rotate_px,
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int screen, position_t position,
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int x, int y, void *object)
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{
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xcb_pixmap_t rootpix;
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xcb_screen_t *s;
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widget_node_t *w;
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int left = 0, right = 0;
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char *data;
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xcb_get_property_reply_t *prop_r;
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xcb_get_property_cookie_t prop_c;
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area_t rectangle = { 0, 0, 0, 0, NULL, NULL };
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xcb_atom_t rootpix_atom, pixmap_atom;
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xutil_intern_atom_request_t rootpix_atom_req, pixmap_atom_req;
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/* Send requests needed for transparency */
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if(ctx->bg.alpha != 0xffff)
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{
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pixmap_atom_req = xutil_intern_atom(globalconf.connection, &globalconf.atoms, "PIXMAP");
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rootpix_atom_req = xutil_intern_atom(globalconf.connection, &globalconf.atoms, "_XROOTPMAP_ID");
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}
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rectangle.width = ctx->width;
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rectangle.height = ctx->height;
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if(ctx->bg.alpha != 0xffff)
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{
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s = xcb_aux_get_screen(globalconf.connection, ctx->phys_screen);
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pixmap_atom = xutil_intern_atom_reply(globalconf.connection, &globalconf.atoms, pixmap_atom_req);
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rootpix_atom = xutil_intern_atom_reply(globalconf.connection, &globalconf.atoms, rootpix_atom_req);
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prop_c = xcb_get_property_unchecked(globalconf.connection, false, s->root, rootpix_atom,
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pixmap_atom, 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((data = xcb_get_property_value(prop_r))
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&& (rootpix = *(xcb_pixmap_t *) data))
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switch(position)
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{
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case Left:
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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 Right:
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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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default:
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xcb_copy_area(globalconf.connection, rootpix,
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rotate_px, 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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draw_rectangle(ctx, rectangle, 1.0, true, ctx->bg);
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for(w = wnode; w; w = w->next)
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if(w->widget->isvisible && w->widget->align == AlignLeft)
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left += w->widget->draw(ctx, screen, w, left, (left + right), object);
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/* renders right widget from last to first */
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for(w = *widget_node_list_last(&wnode); w; w = w->prev)
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if(w->widget->isvisible && w->widget->align == AlignRight)
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right += w->widget->draw(ctx, screen, w, right, (left + right), object);
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for(w = wnode; w; w = w->next)
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if(w->widget->isvisible && w->widget->align == AlignFlex)
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left += w->widget->draw(ctx, screen, w, left, (left + right), object);
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switch(position)
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{
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case Right:
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draw_rotate(ctx, ctx->pixmap, rotate_px,
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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 Left:
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draw_rotate(ctx, ctx->pixmap, rotate_px,
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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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default:
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break;
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}
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}
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/** Common function for creating a widget.
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* \param widget The allocated widget.
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*/
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void
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widget_common_new(widget_t *widget)
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{
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widget->align = AlignLeft;
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widget->tell = widget_common_tell;
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widget->button_press = widget_common_button_press;
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}
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/** Invalidate widgets which should be refresh upon
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* external modifications. widget_t who watch flags will
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* be set to be refreshed.
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* \param screen Virtual screen number.
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* \param flags Cache flags to invalidate.
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*/
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void
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widget_invalidate_cache(int screen, int flags)
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{
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statusbar_t *statusbar;
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widget_node_t *widget;
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for(statusbar = globalconf.screens[screen].statusbar;
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statusbar;
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statusbar = statusbar->next)
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for(widget = statusbar->widgets; widget; widget = widget->next)
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if(widget->widget->cache_flags & flags)
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{
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statusbar->need_update = true;
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break;
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}
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}
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/** Set a statusbar needs update because it has widget, or redraw a titlebar.
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* \todo Probably needs more optimization.
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* \param widget The widget to look for.
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*/
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static void
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widget_invalidate_bywidget(widget_t *widget)
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{
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int screen;
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statusbar_t *statusbar;
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widget_node_t *witer;
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client_t *c;
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for(screen = 0; screen < globalconf.screens_info->nscreen; screen++)
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for(statusbar = globalconf.screens[screen].statusbar;
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statusbar;
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statusbar = statusbar->next)
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for(witer = statusbar->widgets; witer; witer = witer->next)
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if(witer->widget == widget)
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{
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statusbar->need_update = true;
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break;
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}
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for(c = globalconf.clients; c; c = c->next)
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if(c->titlebar)
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for(witer = c->titlebar->widgets; witer; witer = witer->next)
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if(witer->widget == widget)
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titlebar_draw(c);
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}
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/** Create a new widget userdata. The object is pushed on the stack.
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* \param widget The widget.
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* \return Return luaA_settype() return value.
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*/
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int
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luaA_widget_userdata_new(widget_t *widget)
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{
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widget_t **w = lua_newuserdata(globalconf.L, sizeof(widget_t *));
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*w = widget;
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widget_ref(w);
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return luaA_settype(globalconf.L, "widget");
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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 name and a type value. Optionnal attributes
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* are: align.
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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 = NULL;
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widget_constructor_t *wc;
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alignment_t align;
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luaA_checktable(L, 1);
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align = draw_align_get_from_str(luaA_getopt_string(L, 1, "align", "left"));
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type = luaA_getopt_string(L, 1, "type", NULL);
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if((wc = name_func_lookup(type, WidgetList)))
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w = wc(align);
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else
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luaL_error(L, "unkown widget type: %s", type);
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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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w->name = luaA_name_init(L);
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return luaA_widget_userdata_new(w);
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}
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/** Add a mouse button 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 A mouse button bindings object.
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*/
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static int
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luaA_widget_mouse_add(lua_State *L)
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{
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widget_t **widget = luaA_checkudata(L, 1, "widget");
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button_t **b = luaA_checkudata(L, 2, "mouse");
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button_list_push(&(*widget)->buttons, *b);
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button_ref(b);
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return 0;
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}
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/** Remove a mouse button bindings from 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 A mouse button bindings object.
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*/
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static int
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luaA_widget_mouse_remove(lua_State *L)
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{
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widget_t **widget = luaA_checkudata(L, 1, "widget");
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button_t **b = luaA_checkudata(L, 2, "mouse");
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button_list_detach(&(*widget)->buttons, *b);
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button_unref(b);
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return 0;
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}
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/** Do what should be done with a widget_tell_status_t for a widget.
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* \param widget The widget.
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* \param status The status returned by the tell function of the widget.
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* \param property The property updated.
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*/
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void
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widget_tell_managestatus(widget_t *widget, widget_tell_status_t status, const char *property)
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{
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switch(status)
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{
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case WIDGET_ERROR:
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warn("error changing property %s of widget %s",
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property, widget->name);
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break;
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case WIDGET_ERROR_NOVALUE:
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warn("error changing property %s of widget %s, no value given",
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property, widget->name);
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break;
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case WIDGET_ERROR_FORMAT_FONT:
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warn("error changing property %s of widget %s, must be a valid font",
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property, widget->name);
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break;
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case WIDGET_ERROR_FORMAT_COLOR:
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warn("error changing property %s of widget %s, must be a valid color",
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property, widget->name);
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break;
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case WIDGET_ERROR_FORMAT_SECTION:
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warn("error changing property %s of widget %s, section/title not found",
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property, widget->name);
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break;
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case WIDGET_NOERROR:
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widget_invalidate_bywidget(widget);
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break;
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case WIDGET_ERROR_CUSTOM:
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break;
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}
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}
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/** Set a widget property. Each widget type has its own set of property.
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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 The property name.
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* \lparam The property value.
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*/
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static int
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luaA_widget_set(lua_State *L)
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{
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widget_t **widget = luaA_checkudata(L, 1, "widget");
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const char *property, *value;
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widget_tell_status_t status;
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property = luaL_checkstring(L, 2);
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value = luaL_checkstring(L, 3);
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status = (*widget)->tell(*widget, property, value);
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widget_tell_managestatus(*widget, status, property);
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return 0;
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}
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/** Handle widget garbage collection.
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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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*/
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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 = luaA_checkudata(L, 1, "widget");
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widget_unref(widget);
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*widget = NULL;
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return 0;
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}
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/** Convert a widget into a printable string.
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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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*/
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static int
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luaA_widget_tostring(lua_State *L)
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{
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widget_t **p = luaA_checkudata(L, 1, "widget");
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lua_pushfstring(L, "[widget udata(%p) name(%s)]", *p, (*p)->name);
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return 1;
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}
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/** Check for widget equality.
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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 Another widget.
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* \lreturn True if widgets are equal.
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*/
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static int
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luaA_widget_eq(lua_State *L)
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{
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widget_t **t1 = luaA_checkudata(L, 1, "widget");
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widget_t **t2 = luaA_checkudata(L, 2, "widget");
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lua_pushboolean(L, (*t1 == *t2));
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return 1;
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}
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/** Set the widget name.
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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 A string with the new widget name.
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*/
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static int
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luaA_widget_name_set(lua_State *L)
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{
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widget_t **widget = luaA_checkudata(L, 1, "widget");
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const char *name = luaL_checkstring(L, 2);
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p_delete(&(*widget)->name);
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(*widget)->name = a_strdup(name);
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return 0;
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}
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/** Get the widget name.
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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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* \lreturn A string with the name of the widget.
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*/
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static int
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luaA_widget_name_get(lua_State *L)
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{
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widget_t **widget = luaA_checkudata(L, 1, "widget");
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lua_pushstring(L, (*widget)->name);
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return 1;
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}
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/** Set the visible attribute of a widget. If a widget is not visible, it is not
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* drawn on the statusbar.
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* \param L The Lua VM state.
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*
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* \luastack
|
|
* \lvalue A widget.
|
|
* \lparam A boolean value.
|
|
*/
|
|
static int
|
|
luaA_widget_visible_set(lua_State *L)
|
|
{
|
|
widget_t **widget = luaA_checkudata(L, 1, "widget");
|
|
(*widget)->isvisible = luaA_checkboolean(L, 2);
|
|
widget_invalidate_bywidget(*widget);
|
|
return 0;
|
|
}
|
|
|
|
/** Get the visible attribute of a widget.
|
|
* \param L The Lua VM state.
|
|
*
|
|
* \luastack
|
|
* \lvalue A widget.
|
|
* \return A boolean value, true if the widget is visible, false otherwise.
|
|
*/
|
|
static int
|
|
luaA_widget_visible_get(lua_State *L)
|
|
{
|
|
widget_t **widget = luaA_checkudata(L, 1, "widget");
|
|
lua_pushboolean(L, (*widget)->isvisible);
|
|
return 1;
|
|
}
|
|
|
|
const struct luaL_reg awesome_widget_methods[] =
|
|
{
|
|
{ "new", luaA_widget_new },
|
|
{ NULL, NULL }
|
|
};
|
|
const struct luaL_reg awesome_widget_meta[] =
|
|
{
|
|
{ "mouse_add", luaA_widget_mouse_add },
|
|
{ "mouse_remove", luaA_widget_mouse_remove },
|
|
{ "set", luaA_widget_set },
|
|
{ "name_set", luaA_widget_name_set },
|
|
{ "name_get", luaA_widget_name_get },
|
|
{ "visible_set", luaA_widget_visible_set },
|
|
{ "visible_get", luaA_widget_visible_get },
|
|
{ "__gc", luaA_widget_gc },
|
|
{ "__eq", luaA_widget_eq },
|
|
{ "__tostring", luaA_widget_tostring },
|
|
{ NULL, NULL }
|
|
};
|
|
|
|
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
|