Dogcows Code - chaz/tint2/blob - src/clock/clock.c

   1 /**************************************************************************
   2 *
   3 * Tint2 : clock
   4 *
   5 * Copyright (C) 2008 thierry lorthiois (lorthiois@bbsoft.fr)
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License version 2
   9 * as published by the Free Software Foundation.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18 **************************************************************************/
  19
  20 #include <string.h>
  21 #include <stdio.h>
  22 #include <cairo.h>
  23 #include <cairo-xlib.h>
  24 #include <pango/pangocairo.h>
  25 #include <stdlib.h>
  26
  27 #include "window.h"
  28 #include "server.h"
  29 #include "area.h"
  30 #include "panel.h"
  31 #include "taskbar.h"
  32 #include "clock.h"
  33 #include "timer.h"
  34 #include "common.h"
  35
  36
  37 char *time1_format;
  38 char *time1_timezone;
  39 char *time2_format;
  40 char *time2_timezone;
  41 char *time_tooltip_format;
  42 char *time_tooltip_timezone;
  43 char *clock_lclick_command;
  44 char *clock_rclick_command;
  45 struct timeval time_clock;
  46 PangoFontDescription *time1_font_desc;
  47 PangoFontDescription *time2_font_desc;
  48 static char buf_time[40];
  49 static char buf_date[40];
  50 static char buf_tooltip[40];
  51 int clock_enabled;
  52 static timeout* clock_timeout;
  53
  54
  55 void default_clock()
  56 {
  57         clock_enabled = 0;
  58         clock_timeout = 0;
  59         time1_format = 0;
  60         time1_timezone = 0;
  61         time2_format = 0;
  62         time2_timezone = 0;
  63         time_tooltip_format = 0;
  64         time_tooltip_timezone = 0;
  65         clock_lclick_command = 0;
  66         clock_rclick_command = 0;
  67         time1_font_desc = 0;
  68         time2_font_desc = 0;
  69 }
  70
  71 void cleanup_clock()
  72 {
  73         if (time1_font_desc) pango_font_description_free(time1_font_desc);
  74         if (time2_font_desc) pango_font_description_free(time2_font_desc);
  75         if (time1_format) g_free(time1_format);
  76         if (time2_format) g_free(time2_format);
  77         if (time_tooltip_format) g_free(time_tooltip_format);
  78         if (time1_timezone) g_free(time1_timezone);
  79         if (time2_timezone) g_free(time2_timezone);
  80         if (time_tooltip_timezone) g_free(time_tooltip_timezone);
  81         if (clock_lclick_command) g_free(clock_lclick_command);
  82         if (clock_rclick_command) g_free(clock_rclick_command);
  83 }
  84
  85
  86 void update_clocks_sec(void* arg)
  87 {
  88         gettimeofday(&time_clock, 0);
  89         int i;
  90         if (time1_format) {
  91                 for (i=0 ; i < nb_panel ; i++)
  92                         panel1[i].clock.area.resize = 1;
  93         }
  94         panel_refresh = 1;
  95 }
  96
  97 void update_clocks_min(void* arg)
  98 {
  99         // remember old_sec because after suspend/hibernate the clock should be updated directly, and not
 100         // on next minute change
 101         time_t old_sec = time_clock.tv_sec;
 102         gettimeofday(&time_clock, 0);
 103         if (time_clock.tv_sec % 60 == 0 || time_clock.tv_sec - old_sec > 60) {
 104                 int i;
 105                 if (time1_format) {
 106                         for (i=0 ; i < nb_panel ; i++)
 107                                 panel1[i].clock.area.resize = 1;
 108                 }
 109                 panel_refresh = 1;
 110         }
 111 }
 112
 113 struct tm* clock_gettime_for_tz(const char* timezone) {
 114         if (timezone) {
 115                 const char* old_tz = getenv("TZ");
 116                 setenv("TZ", timezone, 1);
 117                 struct tm* result = localtime(&time_clock.tv_sec);
 118                 if (old_tz) setenv("TZ", old_tz, 1);
 119                 else unsetenv("TZ");
 120                 return result;
 121         }
 122         else return localtime(&time_clock.tv_sec);
 123 }
 124
 125 const char* clock_get_tooltip(void* obj)
 126 {
 127         strftime(buf_tooltip, sizeof(buf_tooltip), time_tooltip_format, clock_gettime_for_tz(time_tooltip_timezone));
 128         return buf_tooltip;
 129 }
 130
 131
 132 void init_clock()
 133 {
 134         if(time1_format && clock_timeout==0) {
 135                 if (strchr(time1_format, 'S') || strchr(time1_format, 'T') || strchr(time1_format, 'r'))
 136                         clock_timeout = add_timeout(10, 1000, update_clocks_sec, 0);
 137                 else
 138                         clock_timeout = add_timeout(10, 1000, update_clocks_min, 0);
 139         }
 140 }
 141
 142
 143 void init_clock_panel(void *p)
 144 {
 145         Panel *panel =(Panel*)p;
 146         Clock *clock = &panel->clock;
 147         int time_height, time_height_ink, date_height, date_height_ink;
 148
 149         clock->area.parent = p;
 150         clock->area.panel = p;
 151         clock->area._draw_foreground = draw_clock;
 152         clock->area.size_mode = SIZE_BY_CONTENT;
 153         clock->area._resize = resize_clock;
 154         clock->area.resize = 1;
 155         clock->area.redraw = 1;
 156         clock->area.on_screen = 1;
 157
 158         strftime(buf_time, sizeof(buf_time), time1_format, clock_gettime_for_tz(time1_timezone));
 159         get_text_size(time1_font_desc, &time_height_ink, &time_height, panel->area.height, buf_time, strlen(buf_time));
 160         if (time2_format) {
 161                 strftime(buf_date, sizeof(buf_date), time2_format, clock_gettime_for_tz(time2_timezone));
 162                 get_text_size(time2_font_desc, &date_height_ink, &date_height, panel->area.height, buf_date, strlen(buf_date));
 163         }
 164
 165         if (panel_horizontal) {
 166                 // panel horizonal => fixed height and posy
 167                 clock->area.posy = panel->area.bg->border.width + panel->area.paddingy;
 168                 clock->area.height = panel->area.height - (2 * clock->area.posy);
 169         }
 170         else {
 171                 // panel vertical => fixed width, height, posy and posx
 172                 clock->area.posy = panel->area.bg->border.width + panel->area.paddingxlr;
 173                 clock->area.height = (2 * clock->area.paddingxlr) + (time_height + date_height);
 174                 clock->area.posx = panel->area.bg->border.width + panel->area.paddingy;
 175                 clock->area.width = panel->area.width - (2 * panel->area.bg->border.width) - (2 * panel->area.paddingy);
 176         }
 177
 178         clock->time1_posy = (clock->area.height - time_height) / 2;
 179         if (time2_format) {
 180                 strftime(buf_date, sizeof(buf_date), time2_format, clock_gettime_for_tz(time2_timezone));
 181                 get_text_size(time2_font_desc, &date_height_ink, &date_height, panel->area.height, buf_date, strlen(buf_date));
 182
 183                 clock->time1_posy -= ((date_height_ink + 2) / 2);
 184                 clock->time2_posy = clock->time1_posy + time_height + 2 - (time_height - time_height_ink)/2 - (date_height - date_height_ink)/2;
 185         }
 186
 187         if (time_tooltip_format) {
 188                 clock->area._get_tooltip_text = clock_get_tooltip;
 189                 strftime(buf_tooltip, sizeof(buf_tooltip), time_tooltip_format, clock_gettime_for_tz(time_tooltip_timezone));
 190         }
 191 }
 192
 193
 194 void draw_clock (void *obj, cairo_t *c)
 195 {
 196         Clock *clock = obj;
 197         PangoLayout *layout;
 198
 199         layout = pango_cairo_create_layout (c);
 200
 201         // draw layout
 202         pango_layout_set_font_description (layout, time1_font_desc);
 203         pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
 204         pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
 205         pango_layout_set_text (layout, buf_time, strlen(buf_time));
 206
 207         cairo_set_source_rgba (c, clock->font.color[0], clock->font.color[1], clock->font.color[2], clock->font.alpha);
 208
 209         pango_cairo_update_layout (c, layout);
 210         cairo_move_to (c, 0, clock->time1_posy);
 211         pango_cairo_show_layout (c, layout);
 212
 213         if (time2_format) {
 214                 pango_layout_set_font_description (layout, time2_font_desc);
 215                 pango_layout_set_indent(layout, 0);
 216                 pango_layout_set_text (layout, buf_date, strlen(buf_date));
 217                 pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
 218
 219                 pango_cairo_update_layout (c, layout);
 220                 cairo_move_to (c, 0, clock->time2_posy);
 221                 pango_cairo_show_layout (c, layout);
 222         }
 223
 224         g_object_unref (layout);
 225 }
 226
 227
 228 int resize_clock (void *obj)
 229 {
 230         Clock *clock = obj;
 231         PangoLayout *layout;
 232         int time_width, date_width, new_width, ret = 0;
 233
 234         clock->area.redraw = 1;
 235         time_width = date_width = 0;
 236         strftime(buf_time, sizeof(buf_time), time1_format, clock_gettime_for_tz(time1_timezone));
 237         if (time2_format)
 238                 strftime(buf_date, sizeof(buf_date), time2_format, clock_gettime_for_tz(time2_timezone));
 239
 240         // vertical panel doen't adjust width
 241         if (!panel_horizontal) return ret;
 242
 243         //printf("  resize_clock\n");
 244         cairo_surface_t *cs;
 245         cairo_t *c;
 246         Pixmap pmap;
 247         pmap = XCreatePixmap (server.dsp, server.root_win, clock->area.width, clock->area.height, server.depth);
 248
 249         cs = cairo_xlib_surface_create (server.dsp, pmap, server.visual, clock->area.width, clock->area.height);
 250         c = cairo_create (cs);
 251         layout = pango_cairo_create_layout (c);
 252
 253         // check width
 254         pango_layout_set_font_description (layout, time1_font_desc);
 255         pango_layout_set_indent(layout, 0);
 256         pango_layout_set_text (layout, buf_time, strlen(buf_time));
 257         pango_layout_get_pixel_size (layout, &time_width, NULL);
 258         if (time2_format) {
 259                 pango_layout_set_font_description (layout, time2_font_desc);
 260                 pango_layout_set_indent(layout, 0);
 261                 pango_layout_set_text (layout, buf_date, strlen(buf_date));
 262                 pango_layout_get_pixel_size (layout, &date_width, NULL);
 263         }
 264
 265         if (time_width > date_width) new_width = time_width;
 266         else new_width = date_width;
 267         new_width += (2*clock->area.paddingxlr) + (2*clock->area.bg->border.width);
 268
 269         Panel *panel = ((Area*)obj)->panel;
 270         if (new_width > clock->area.width || new_width < (clock->area.width-6)) {
 271                 // resize clock
 272                 // we try to limit the number of resize
 273                 // printf("clock_width %d, new_width %d\n", clock->area.width, new_width);
 274                 clock->area.width = new_width + 1;
 275
 276                 // resize other objects on panel
 277                 ret = 1;
 278                 panel_refresh = 1;
 279         }
 280         clock->area.posx = panel->area.width - clock->area.width - panel->area.paddingxlr - panel->area.bg->border.width;
 281
 282
 283         g_object_unref (layout);
 284         cairo_destroy (c);
 285         cairo_surface_destroy (cs);
 286         XFreePixmap (server.dsp, pmap);
 287         return ret;
 288 }
 289
 290
 291 void clock_action(int button)
 292 {
 293         char *command = 0;
 294         switch (button) {
 295                 case 1:
 296                 command = clock_lclick_command;
 297                 break;
 298                 case 3:
 299                 command = clock_rclick_command;
 300                 break;
 301         }
 302         tint_exec(command);
 303 }
 304