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
  26 #include "window.h"
  27 #include "server.h"
  28 #include "taskbar.h"
  29 #include "panel.h"
  30 #include "area.h"
  31 #include "clock.h"
  32
  33
  34 char *time1_format = 0;
  35 char *time2_format = 0;
  36 struct timeval time_clock;
  37 int  time_precision;
  38 PangoFontDescription *time1_font_desc;
  39 PangoFontDescription *time2_font_desc;
  40 static char buf_time[40];
  41 static char buf_date[40];
  42
  43
  44 void init_clock()
  45 {
  46    Panel *panel;
  47    Clock *clock;
  48    int i, time_height, time_height_ink, date_height, date_height_ink;
  49
  50         for (i=0 ; i < nb_panel ; i++) {
  51            panel = &panel1[i];
  52            clock = &panel->clock;
  53
  54                 clock->area.parent = panel;
  55                 clock->area.panel = panel;
  56                 if (!clock->area.visible) return;
  57
  58                 clock->area._draw_foreground = draw_foreground_clock;
  59                 clock->area._resize = resize_clock;
  60
  61                 if (strchr(time1_format, 'S') == NULL) time_precision = 60;
  62                 else time_precision = 1;
  63
  64                 // update clock to force update (-time_precision)
  65                 struct timeval stv;
  66                 gettimeofday(&stv, 0);
  67                 time_clock.tv_sec = stv.tv_sec - time_precision;
  68                 time_clock.tv_sec -= time_clock.tv_sec % time_precision;
  69
  70                 clock->area.posy = panel->area.pix.border.width + panel->area.paddingy;
  71                 clock->area.height = panel->area.height - (2 * clock->area.posy);
  72                 clock->area.resize = 1;
  73                 clock->area.redraw = 1;
  74
  75                 strftime(buf_time, sizeof(buf_time), time1_format, localtime(&time_clock.tv_sec));
  76                 if (time2_format)
  77                         strftime(buf_date, sizeof(buf_date), time2_format, localtime(&time_clock.tv_sec));
  78
  79                 get_text_size(time1_font_desc, &time_height_ink, &time_height, panel->area.height, buf_time, strlen(buf_time));
  80                 clock->time1_posy = (clock->area.height - time_height) / 2;
  81
  82                 if (time2_format) {
  83                         get_text_size(time2_font_desc, &date_height_ink, &date_height, panel->area.height, buf_date, strlen(buf_date));
  84
  85                         clock->time1_posy -= ((date_height_ink + 2) / 2);
  86                         clock->time2_posy = clock->time1_posy + time_height + 2 - (time_height - time_height_ink)/2 - (date_height - date_height_ink)/2;
  87                 }
  88         }
  89 }
  90
  91
  92 void draw_foreground_clock (void *obj, cairo_t *c, int active)
  93 {
  94    Clock *clock = obj;
  95    PangoLayout *layout;
  96
  97    //printf("  draw_foreground_clock : %s en (%d, %d)\n", buf_time, clock->area.posx, clock->area.width);
  98    layout = pango_cairo_create_layout (c);
  99
 100    // draw layout
 101    pango_layout_set_font_description (layout, time1_font_desc);
 102    pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
 103    pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
 104    pango_layout_set_text (layout, buf_time, strlen(buf_time));
 105
 106    cairo_set_source_rgba (c, clock->font.color[0], clock->font.color[1], clock->font.color[2], clock->font.alpha);
 107
 108    pango_cairo_update_layout (c, layout);
 109    cairo_move_to (c, 0, clock->time1_posy);
 110    pango_cairo_show_layout (c, layout);
 111
 112    if (time2_format) {
 113       pango_layout_set_font_description (layout, time2_font_desc);
 114       pango_layout_set_indent(layout, 0);
 115       pango_layout_set_text (layout, buf_date, strlen(buf_date));
 116       pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
 117
 118       pango_cairo_update_layout (c, layout);
 119       cairo_move_to (c, 0, clock->time2_posy);
 120       pango_cairo_show_layout (c, layout);
 121    }
 122
 123    g_object_unref (layout);
 124 }
 125
 126
 127 void resize_clock (void *obj)
 128 {
 129    Clock *clock = obj;
 130    PangoLayout *layout;
 131    int time_width, date_width, new_width;
 132
 133    time_width = date_width = 0;
 134    clock->area.redraw = 1;
 135
 136    strftime(buf_time, sizeof(buf_time), time1_format, localtime(&time_clock.tv_sec));
 137    if (time2_format)
 138       strftime(buf_date, sizeof(buf_date), time2_format, localtime(&time_clock.tv_sec));
 139
 140    //printf("  resize_clock\n");
 141    cairo_surface_t *cs;
 142    cairo_t *c;
 143         Pixmap pmap;
 144         pmap = XCreatePixmap (server.dsp, server.root_win, clock->area.width, clock->area.height, server.depth);
 145
 146    cs = cairo_xlib_surface_create (server.dsp, pmap, server.visual, clock->area.width, clock->area.height);
 147    c = cairo_create (cs);
 148    layout = pango_cairo_create_layout (c);
 149
 150    // check width
 151    pango_layout_set_font_description (layout, time1_font_desc);
 152    pango_layout_set_indent(layout, 0);
 153    pango_layout_set_text (layout, buf_time, strlen(buf_time));
 154    pango_layout_get_pixel_size (layout, &time_width, NULL);
 155    if (time2_format) {
 156       pango_layout_set_font_description (layout, time2_font_desc);
 157       pango_layout_set_indent(layout, 0);
 158       pango_layout_set_text (layout, buf_date, strlen(buf_date));
 159       pango_layout_get_pixel_size (layout, &date_width, NULL);
 160    }
 161
 162    if (time_width > date_width) new_width = time_width;
 163    else new_width = date_width;
 164    new_width += (2*clock->area.paddingxlr) + (2*clock->area.pix.border.width);
 165
 166    if (new_width > clock->area.width || new_width < (clock->area.width-6)) {
 167       int i;
 168       Panel *panel = ((Area*)obj)->panel;
 169
 170       printf("clock_width %d, new_width %d\n", clock->area.width, new_width);
 171       // resize clock
 172       // we try to limit the number of resize
 173       clock->area.width = new_width + 1;
 174       clock->area.posx = panel->area.width - clock->area.width - panel->area.paddingxlr - panel->area.pix.border.width;
 175
 176       // resize other objects on panel
 177                 for (i=0 ; i < nb_panel ; i++) {
 178                         panel1[i].area.resize = 1;
 179                 }
 180                 panel_refresh = 1;
 181    }
 182
 183    g_object_unref (layout);
 184    cairo_destroy (c);
 185    cairo_surface_destroy (cs);
 186    XFreePixmap (server.dsp, pmap);
 187 }
 188