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
  41
  42 void init_clock(Clock *clock, Area *parent)
  43 {
  44    Panel *panel = (Panel *)parent;
  45    char buf_time[40];
  46    char buf_date[40];
  47    int time_height, time_height_ink, date_height, date_height_ink;
  48
  49         clock->area.parent = parent;
  50         clock->area.panel = panel;
  51    clock->area.draw_foreground = draw_foreground_clock;
  52    if (!time1_format) return;
  53
  54    if (strchr(time1_format, 'S') == NULL) time_precision = 60;
  55    else time_precision = 1;
  56
  57    // update clock to force update (-time_precision)
  58    struct timeval stv;
  59    gettimeofday(&stv, 0);
  60    time_clock.tv_sec = stv.tv_sec - time_precision;
  61    time_clock.tv_sec -= time_clock.tv_sec % time_precision;
  62
  63    clock->area.posy = parent->pix.border.width + parent->paddingy;
  64    clock->area.height = parent->height - (2 * clock->area.posy);
  65    clock->area.width = 0;  // force posx and width detection
  66    clock->area.redraw = 1;
  67
  68    strftime(buf_time, sizeof(buf_time), time1_format, localtime(&time_clock.tv_sec));
  69    if (time2_format)
  70       strftime(buf_date, sizeof(buf_date), time2_format, localtime(&time_clock.tv_sec));
  71
  72    get_text_size(time1_font_desc, &time_height_ink, &time_height, parent->height, buf_time, strlen(buf_time));
  73    clock->time1_posy = (clock->area.height - time_height) / 2;
  74
  75    if (time2_format) {
  76       get_text_size(time2_font_desc, &date_height_ink, &date_height, parent->height, buf_date, strlen(buf_date));
  77
  78       clock->time1_posy -= ((date_height_ink + 2) / 2);
  79       clock->time2_posy = clock->time1_posy + time_height + 2 - (time_height - time_height_ink)/2 - (date_height - date_height_ink)/2;
  80    }
  81 }
  82
  83
  84 void draw_foreground_clock (void *obj, cairo_t *c, int active)
  85 {
  86    Area *parent = ((Area*)obj)->parent;
  87    Clock *clock = obj;
  88    PangoLayout *layout;
  89    char buf_time[40];
  90    char buf_date[40];
  91    int time_width, date_width, new_width;
  92
  93    time_width = date_width = 0;
  94    strftime(buf_time, sizeof(buf_time), time1_format, localtime(&time_clock.tv_sec));
  95    if (time2_format)
  96       strftime(buf_date, sizeof(buf_date), time2_format, localtime(&time_clock.tv_sec));
  97
  98    //printf("  draw_foreground_clock : %s\n", buf_time);
  99 redraw:
 100    layout = pango_cairo_create_layout (c);
 101
 102    // check width
 103    pango_layout_set_font_description (layout, time1_font_desc);
 104    pango_layout_set_indent(layout, 0);
 105    pango_layout_set_text (layout, buf_time, strlen(buf_time));
 106    pango_layout_get_pixel_size (layout, &time_width, NULL);
 107    if (time2_format) {
 108       pango_layout_set_font_description (layout, time2_font_desc);
 109       pango_layout_set_indent(layout, 0);
 110       pango_layout_set_text (layout, buf_date, strlen(buf_date));
 111       pango_layout_get_pixel_size (layout, &date_width, NULL);
 112    }
 113    if (time_width > date_width) new_width = time_width;
 114    else new_width = date_width;
 115    new_width += (2*clock->area.paddingxlr) + (2*clock->area.pix.border.width);
 116
 117    if (new_width > clock->area.width || (new_width != clock->area.width && date_width > time_width)) {
 118       //printf("clock_width %d, new_width %d\n", clock->area.width, new_width);
 119       // resize clock
 120       clock->area.width = new_width;
 121       clock->area.posx = parent->width - clock->area.width - parent->paddingxlr - parent->pix.border.width;
 122
 123       g_object_unref (layout);
 124       resize_taskbar(parent);
 125       goto redraw;
 126    }
 127
 128    // draw layout
 129    pango_layout_set_font_description (layout, time1_font_desc);
 130    pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
 131    pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
 132    pango_layout_set_text (layout, buf_time, strlen(buf_time));
 133
 134    cairo_set_source_rgba (c, clock->font.color[0], clock->font.color[1], clock->font.color[2], clock->font.alpha);
 135
 136    pango_cairo_update_layout (c, layout);
 137    cairo_move_to (c, 0, clock->time1_posy);
 138    pango_cairo_show_layout (c, layout);
 139
 140    if (time2_format) {
 141       pango_layout_set_font_description (layout, time2_font_desc);
 142       pango_layout_set_indent(layout, 0);
 143       pango_layout_set_text (layout, buf_date, strlen(buf_date));
 144       pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
 145
 146       pango_cairo_update_layout (c, layout);
 147       cairo_move_to (c, 0, clock->time2_posy);
 148       pango_cairo_show_layout (c, layout);
 149    }
 150
 151    g_object_unref (layout);
 152 }
 153