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 <unistd.h>
  26 #include <signal.h>
  27 #include <stdlib.h>
  28
  29 #include "window.h"
  30 #include "server.h"
  31 #include "area.h"
  32 #include "panel.h"
  33 #include "taskbar.h"
  34 #include "clock.h"
  35 #include "timer.h"
  36
  37
  38 char *time1_format=0;
  39 char *time1_timezone=0;
  40 char *time2_format=0;
  41 char *time2_timezone=0;
  42 char *time_tooltip_format=0;
  43 char *time_tooltip_timezone=0;
  44 char *clock_lclick_command=0;
  45 char *clock_rclick_command=0;
  46 struct timeval time_clock;
  47 PangoFontDescription *time1_font_desc=0;
  48 PangoFontDescription *time2_font_desc=0;
  49 static char buf_time[40];
  50 static char buf_date[40];
  51 static char buf_tooltip[40];
  52 int clock_enabled;
  53 static timeout* clock_timeout=0;
  54
  55
  56 void update_clocks_sec(void* arg)
  57 {
  58         gettimeofday(&time_clock, 0);
  59         int i;
  60         if (time1_format) {
  61                 for (i=0 ; i < nb_panel ; i++)
  62                         panel1[i].clock.area.resize = 1;
  63         }
  64         panel_refresh = 1;
  65 }
  66
  67 void update_clocks_min(void* arg)
  68 {
  69         gettimeofday(&time_clock, 0);
  70         if (time_clock.tv_sec % 60 == 0) {
  71                 int i;
  72                 if (time1_format) {
  73                         for (i=0 ; i < nb_panel ; i++)
  74                                 panel1[i].clock.area.resize = 1;
  75                 }
  76                 panel_refresh = 1;
  77         }
  78 }
  79
  80 struct tm* clock_gettime_for_tz(const char* timezone) {
  81         if (timezone) {
  82                 const char* old_tz = getenv("TZ");
  83                 setenv("TZ", timezone, 1);
  84                 struct tm* result = localtime(&time_clock.tv_sec);
  85                 if (old_tz) setenv("TZ", old_tz, 1);
  86                 else unsetenv("TZ");
  87                 return result;
  88         }
  89         else return localtime(&time_clock.tv_sec);
  90 }
  91
  92 const char* clock_get_tooltip(void* obj)
  93 {
  94         strftime(buf_tooltip, sizeof(buf_tooltip), time_tooltip_format, clock_gettime_for_tz(time_tooltip_timezone));
  95         return buf_tooltip;
  96 }
  97
  98
  99 void init_clock()
 100 {
 101         if(time1_format && clock_timeout==0) {
 102                 if (strchr(time1_format, 'S') || strchr(time1_format, 'T') || strchr(time1_format, 'r'))
 103                         clock_timeout = add_timeout(10, 1000, update_clocks_sec, 0);
 104                 else
 105                         clock_timeout = add_timeout(10, 1000, update_clocks_min, 0);
 106         }
 107 }
 108
 109
 110 void init_clock_panel(void *p)
 111 {
 112         Panel *panel =(Panel*)p;
 113         Clock *clock = &panel->clock;
 114         int time_height, time_height_ink, date_height, date_height_ink;
 115
 116         clock->area.parent = p;
 117         clock->area.panel = p;
 118         clock->area._draw_foreground = draw_clock;
 119         clock->area._resize = resize_clock;
 120         clock->area.resize = 1;
 121         clock->area.redraw = 1;
 122         clock->area.on_screen = 1;
 123
 124         strftime(buf_time, sizeof(buf_time), time1_format, clock_gettime_for_tz(time1_timezone));
 125         get_text_size(time1_font_desc, &time_height_ink, &time_height, panel->area.height, buf_time, strlen(buf_time));
 126         if (time2_format) {
 127                 strftime(buf_date, sizeof(buf_date), time2_format, clock_gettime_for_tz(time2_timezone));
 128                 get_text_size(time2_font_desc, &date_height_ink, &date_height, panel->area.height, buf_date, strlen(buf_date));
 129         }
 130
 131         if (panel_horizontal) {
 132                 // panel horizonal => fixed height and posy
 133                 clock->area.posy = panel->area.bg->border.width + panel->area.paddingy;
 134                 clock->area.height = panel->area.height - (2 * clock->area.posy);
 135         }
 136         else {
 137                 // panel vertical => fixed width, height, posy and posx
 138                 clock->area.posy = panel->area.bg->border.width + panel->area.paddingxlr;
 139                 clock->area.height = (2 * clock->area.paddingxlr) + (time_height + date_height);
 140                 clock->area.posx = panel->area.bg->border.width + panel->area.paddingy;
 141                 clock->area.width = panel->area.width - (2 * panel->area.bg->border.width) - (2 * panel->area.paddingy);
 142         }
 143
 144         clock->time1_posy = (clock->area.height - time_height) / 2;
 145         if (time2_format) {
 146                 strftime(buf_date, sizeof(buf_date), time2_format, clock_gettime_for_tz(time2_timezone));
 147                 get_text_size(time2_font_desc, &date_height_ink, &date_height, panel->area.height, buf_date, strlen(buf_date));
 148
 149                 clock->time1_posy -= ((date_height_ink + 2) / 2);
 150                 clock->time2_posy = clock->time1_posy + time_height + 2 - (time_height - time_height_ink)/2 - (date_height - date_height_ink)/2;
 151         }
 152
 153         if (time_tooltip_format) {
 154                 clock->area._get_tooltip_text = clock_get_tooltip;
 155                 strftime(buf_tooltip, sizeof(buf_tooltip), time_tooltip_format, clock_gettime_for_tz(time_tooltip_timezone));
 156         }
 157 }
 158
 159
 160 void cleanup_clock()
 161 {
 162         clock_enabled = 0;
 163         if (time1_font_desc)
 164                 pango_font_description_free(time1_font_desc);
 165         if (time2_font_desc)
 166                 pango_font_description_free(time2_font_desc);
 167         g_free(time1_format);
 168         g_free(time2_format);
 169         g_free(time_tooltip_format);
 170         g_free(time1_timezone);
 171         g_free(time2_timezone);
 172         g_free(time_tooltip_timezone);
 173         g_free(clock_lclick_command);
 174         g_free(clock_rclick_command);
 175         time1_font_desc = time2_font_desc = 0;
 176         time1_format = time2_format = time_tooltip_format = 0;
 177         time1_timezone = time2_timezone = time_tooltip_timezone = 0;
 178         clock_lclick_command = clock_rclick_command = 0;
 179 }
 180
 181
 182 void draw_clock (void *obj, cairo_t *c)
 183 {
 184         Clock *clock = obj;
 185         PangoLayout *layout;
 186
 187         layout = pango_cairo_create_layout (c);
 188
 189         // draw layout
 190         pango_layout_set_font_description (layout, time1_font_desc);
 191         pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
 192         pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
 193         pango_layout_set_text (layout, buf_time, strlen(buf_time));
 194
 195         cairo_set_source_rgba (c, clock->font.color[0], clock->font.color[1], clock->font.color[2], clock->font.alpha);
 196
 197         pango_cairo_update_layout (c, layout);
 198         cairo_move_to (c, 0, clock->time1_posy);
 199         pango_cairo_show_layout (c, layout);
 200
 201         if (time2_format) {
 202                 pango_layout_set_font_description (layout, time2_font_desc);
 203                 pango_layout_set_indent(layout, 0);
 204                 pango_layout_set_text (layout, buf_date, strlen(buf_date));
 205                 pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
 206
 207                 pango_cairo_update_layout (c, layout);
 208                 cairo_move_to (c, 0, clock->time2_posy);
 209                 pango_cairo_show_layout (c, layout);
 210         }
 211
 212         g_object_unref (layout);
 213 }
 214
 215
 216 void resize_clock (void *obj)
 217 {
 218         Clock *clock = obj;
 219         PangoLayout *layout;
 220         int time_width, date_width, new_width;
 221
 222         clock->area.redraw = 1;
 223         time_width = date_width = 0;
 224         strftime(buf_time, sizeof(buf_time), time1_format, clock_gettime_for_tz(time1_timezone));
 225         if (time2_format)
 226                 strftime(buf_date, sizeof(buf_date), time2_format, clock_gettime_for_tz(time2_timezone));
 227
 228         // vertical panel doen't adjust width
 229         if (!panel_horizontal) return;
 230
 231         //printf("  resize_clock\n");
 232         cairo_surface_t *cs;
 233         cairo_t *c;
 234         Pixmap pmap;
 235         pmap = XCreatePixmap (server.dsp, server.root_win, clock->area.width, clock->area.height, server.depth);
 236
 237         cs = cairo_xlib_surface_create (server.dsp, pmap, server.visual, clock->area.width, clock->area.height);
 238         c = cairo_create (cs);
 239         layout = pango_cairo_create_layout (c);
 240
 241         // check width
 242         pango_layout_set_font_description (layout, time1_font_desc);
 243         pango_layout_set_indent(layout, 0);
 244         pango_layout_set_text (layout, buf_time, strlen(buf_time));
 245         pango_layout_get_pixel_size (layout, &time_width, NULL);
 246         if (time2_format) {
 247                 pango_layout_set_font_description (layout, time2_font_desc);
 248                 pango_layout_set_indent(layout, 0);
 249                 pango_layout_set_text (layout, buf_date, strlen(buf_date));
 250                 pango_layout_get_pixel_size (layout, &date_width, NULL);
 251         }
 252
 253         if (time_width > date_width) new_width = time_width;
 254         else new_width = date_width;
 255         new_width += (2*clock->area.paddingxlr) + (2*clock->area.bg->border.width);
 256
 257         Panel *panel = ((Area*)obj)->panel;
 258         clock->area.posx = panel->area.width - clock->area.width - panel->area.paddingxlr - panel->area.bg->border.width;
 259
 260         if (new_width > clock->area.width || new_width < (clock->area.width-6)) {
 261                 // resize clock
 262                 // we try to limit the number of resize
 263                 // printf("clock_width %d, new_width %d\n", clock->area.width, new_width);
 264                 clock->area.width = new_width + 1;
 265
 266                 // resize other objects on panel
 267                 panel->area.resize = 1;
 268 #ifdef ENABLE_BATTERY
 269                 panel->battery.area.resize = 1;
 270 #endif
 271                 systray.area.resize = 1;
 272                 panel_refresh = 1;
 273         }
 274
 275         g_object_unref (layout);
 276         cairo_destroy (c);
 277         cairo_surface_destroy (cs);
 278         XFreePixmap (server.dsp, pmap);
 279 }
 280
 281
 282 void clock_action(int button)
 283 {
 284         char *command = 0;
 285         switch (button) {
 286                 case 1:
 287                 command = clock_lclick_command;
 288                 break;
 289                 case 3:
 290                 command = clock_rclick_command;
 291                 break;
 292         }
 293         if (command) {
 294                 pid_t pid;
 295                 pid = fork();
 296                 if (pid == 0) {
 297                         // change for the fork the signal mask
 298 //                      sigset_t sigset;
 299 //                      sigprocmask(SIG_SETMASK, &sigset, 0);
 300 //                      sigprocmask(SIG_UNBLOCK, &sigset, 0);
 301                         execl("/bin/sh", "/bin/sh", "-c", command, NULL);
 302                         _exit(0);
 303                 }
 304         }
 305 }
 306