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 const struct timeout* clock_timeout=0;
  54
  55
  56 void update_clocks()
  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 struct tm* clock_gettime_for_tz(const char* timezone) {
  68         if (timezone) {
  69                 const char* old_tz = getenv("TZ");
  70                 setenv("TZ", timezone, 1);
  71                 struct tm* result = localtime(&time_clock.tv_sec);
  72                 if (old_tz) setenv("TZ", old_tz, 1);
  73                 else unsetenv("TZ");
  74                 return result;
  75         }
  76         else return localtime(&time_clock.tv_sec);
  77 }
  78
  79 const char* clock_get_tooltip(void* obj)
  80 {
  81         strftime(buf_tooltip, sizeof(buf_tooltip), time_tooltip_format, clock_gettime_for_tz(time_tooltip_timezone));
  82         return buf_tooltip;
  83 }
  84
  85
  86 void init_clock()
  87 {
  88         if(time1_format && clock_timeout==0) {
  89                 if (strchr(time1_format, 'S') || strchr(time1_format, 'T') || strchr(time1_format, 'r'))
  90                         clock_timeout = add_timeout(10, 1000, update_clocks);
  91                 else
  92                         clock_timeout = add_timeout(10, 60000, update_clocks);
  93         }
  94 }
  95
  96
  97 void init_clock_panel(void *p)
  98 {
  99         Panel *panel =(Panel*)p;
 100         Clock *clock = &panel->clock;
 101         int time_height, time_height_ink, date_height, date_height_ink;
 102
 103         clock->area.parent = p;
 104         clock->area.panel = p;
 105         clock->area._draw_foreground = draw_clock;
 106         clock->area._resize = resize_clock;
 107         clock->area.resize = 1;
 108         clock->area.redraw = 1;
 109         clock->area.on_screen = 1;
 110
 111         strftime(buf_time, sizeof(buf_time), time1_format, clock_gettime_for_tz(time1_timezone));
 112         get_text_size(time1_font_desc, &time_height_ink, &time_height, panel->area.height, buf_time, strlen(buf_time));
 113         if (time2_format) {
 114                 strftime(buf_date, sizeof(buf_date), time2_format, clock_gettime_for_tz(time2_timezone));
 115                 get_text_size(time2_font_desc, &date_height_ink, &date_height, panel->area.height, buf_date, strlen(buf_date));
 116         }
 117
 118         if (panel_horizontal) {
 119                 // panel horizonal => fixed height and posy
 120                 clock->area.posy = panel->area.pix.border.width + panel->area.paddingy;
 121                 clock->area.height = panel->area.height - (2 * clock->area.posy);
 122         }
 123         else {
 124                 // panel vertical => fixed width, height, posy and posx
 125                 clock->area.posy = panel->area.pix.border.width + panel->area.paddingxlr;
 126                 clock->area.height = (2 * clock->area.paddingxlr) + (time_height + date_height);
 127                 clock->area.posx = panel->area.pix.border.width + panel->area.paddingy;
 128                 clock->area.width = panel->area.width - (2 * panel->area.pix.border.width) - (2 * panel->area.paddingy);
 129         }
 130
 131         clock->time1_posy = (clock->area.height - time_height) / 2;
 132         if (time2_format) {
 133                 strftime(buf_date, sizeof(buf_date), time2_format, clock_gettime_for_tz(time2_timezone));
 134                 get_text_size(time2_font_desc, &date_height_ink, &date_height, panel->area.height, buf_date, strlen(buf_date));
 135
 136                 clock->time1_posy -= ((date_height_ink + 2) / 2);
 137                 clock->time2_posy = clock->time1_posy + time_height + 2 - (time_height - time_height_ink)/2 - (date_height - date_height_ink)/2;
 138         }
 139
 140         if (time_tooltip_format) {
 141                 clock->area._get_tooltip_text = clock_get_tooltip;
 142                 strftime(buf_tooltip, sizeof(buf_tooltip), time_tooltip_format, clock_gettime_for_tz(time_tooltip_timezone));
 143         }
 144 }
 145
 146
 147 void cleanup_clock()
 148 {
 149         clock_enabled = 0;
 150         if (time1_font_desc)
 151                 pango_font_description_free(time1_font_desc);
 152         if (time2_font_desc)
 153                 pango_font_description_free(time2_font_desc);
 154         g_free(time1_format);
 155         g_free(time2_format);
 156         g_free(time_tooltip_format);
 157         g_free(time1_timezone);
 158         g_free(time2_timezone);
 159         g_free(time_tooltip_timezone);
 160         g_free(clock_lclick_command);
 161         g_free(clock_rclick_command);
 162         time1_font_desc = time2_font_desc = 0;
 163         time1_format = time2_format = time_tooltip_format = 0;
 164         time1_timezone = time2_timezone = time_tooltip_timezone = 0;
 165         clock_lclick_command = clock_rclick_command = 0;
 166 }
 167
 168
 169 void draw_clock (void *obj, cairo_t *c, int active)
 170 {
 171         Clock *clock = obj;
 172         PangoLayout *layout;
 173
 174         layout = pango_cairo_create_layout (c);
 175
 176         // draw layout
 177         pango_layout_set_font_description (layout, time1_font_desc);
 178         pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
 179         pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
 180         pango_layout_set_text (layout, buf_time, strlen(buf_time));
 181
 182         cairo_set_source_rgba (c, clock->font.color[0], clock->font.color[1], clock->font.color[2], clock->font.alpha);
 183
 184         pango_cairo_update_layout (c, layout);
 185         cairo_move_to (c, 0, clock->time1_posy);
 186         pango_cairo_show_layout (c, layout);
 187
 188         if (time2_format) {
 189                 pango_layout_set_font_description (layout, time2_font_desc);
 190                 pango_layout_set_indent(layout, 0);
 191                 pango_layout_set_text (layout, buf_date, strlen(buf_date));
 192                 pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
 193
 194                 pango_cairo_update_layout (c, layout);
 195                 cairo_move_to (c, 0, clock->time2_posy);
 196                 pango_cairo_show_layout (c, layout);
 197         }
 198
 199         g_object_unref (layout);
 200 }
 201
 202
 203 void resize_clock (void *obj)
 204 {
 205         Clock *clock = obj;
 206         PangoLayout *layout;
 207         int time_width, date_width, new_width;
 208
 209         clock->area.redraw = 1;
 210         time_width = date_width = 0;
 211         strftime(buf_time, sizeof(buf_time), time1_format, clock_gettime_for_tz(time1_timezone));
 212         if (time2_format)
 213                 strftime(buf_date, sizeof(buf_date), time2_format, clock_gettime_for_tz(time2_timezone));
 214
 215         // vertical panel doen't adjust width
 216         if (!panel_horizontal) return;
 217
 218         //printf("  resize_clock\n");
 219         cairo_surface_t *cs;
 220         cairo_t *c;
 221         Pixmap pmap;
 222         pmap = XCreatePixmap (server.dsp, server.root_win, clock->area.width, clock->area.height, server.depth);
 223
 224         cs = cairo_xlib_surface_create (server.dsp, pmap, server.visual, clock->area.width, clock->area.height);
 225         c = cairo_create (cs);
 226         layout = pango_cairo_create_layout (c);
 227
 228         // check width
 229         pango_layout_set_font_description (layout, time1_font_desc);
 230         pango_layout_set_indent(layout, 0);
 231         pango_layout_set_text (layout, buf_time, strlen(buf_time));
 232         pango_layout_get_pixel_size (layout, &time_width, NULL);
 233         if (time2_format) {
 234                 pango_layout_set_font_description (layout, time2_font_desc);
 235                 pango_layout_set_indent(layout, 0);
 236                 pango_layout_set_text (layout, buf_date, strlen(buf_date));
 237                 pango_layout_get_pixel_size (layout, &date_width, NULL);
 238         }
 239
 240         if (time_width > date_width) new_width = time_width;
 241         else new_width = date_width;
 242         new_width += (2*clock->area.paddingxlr) + (2*clock->area.pix.border.width);
 243
 244         Panel *panel = ((Area*)obj)->panel;
 245         clock->area.posx = panel->area.width - clock->area.width - panel->area.paddingxlr - panel->area.pix.border.width;
 246
 247         if (new_width > clock->area.width || new_width < (clock->area.width-6)) {
 248                 // resize clock
 249                 // we try to limit the number of resize
 250                 // printf("clock_width %d, new_width %d\n", clock->area.width, new_width);
 251                 clock->area.width = new_width + 1;
 252
 253                 // resize other objects on panel
 254                 panel->area.resize = 1;
 255 #ifdef ENABLE_BATTERY
 256                 panel->battery.area.resize = 1;
 257 #endif
 258                 systray.area.resize = 1;
 259                 panel_refresh = 1;
 260         }
 261
 262         g_object_unref (layout);
 263         cairo_destroy (c);
 264         cairo_surface_destroy (cs);
 265         XFreePixmap (server.dsp, pmap);
 266 }
 267
 268
 269 void clock_action(int button)
 270 {
 271         char *command = 0;
 272         switch (button) {
 273                 case 1:
 274                 command = clock_lclick_command;
 275                 break;
 276                 case 3:
 277                 command = clock_rclick_command;
 278                 break;
 279         }
 280         if (command) {
 281                 pid_t pid;
 282                 pid = fork();
 283                 if (pid == 0) {
 284                         // change for the fork the signal mask
 285                         sigset_t sigset;
 286                         sigprocmask(SIG_SETMASK, &sigset, 0);
 287                         sigprocmask(SIG_UNBLOCK, &sigset, 0);
 288                         execl("/bin/sh", "/bin/sh", "-c", command, NULL);
 289                         _exit(0);
 290                 }
 291         }
 292 }
 293