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(Clock *clock, Area *parent)
  45 {
  46    Panel *panel = (Panel *)parent;
  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    clock->area._resize = resize_clock;
  53    if (!time1_format) return;
  54
  55         // add clock to the panel
  56         panel->area.list = g_slist_append(panel->area.list, clock);
  57
  58    if (strchr(time1_format, 'S') == NULL) time_precision = 60;
  59    else time_precision = 1;
  60
  61    // update clock to force update (-time_precision)
  62    struct timeval stv;
  63    gettimeofday(&stv, 0);
  64    time_clock.tv_sec = stv.tv_sec - time_precision;
  65    time_clock.tv_sec -= time_clock.tv_sec % time_precision;
  66
  67    clock->area.posy = parent->pix.border.width + parent->paddingy;
  68    clock->area.height = parent->height - (2 * clock->area.posy);
  69    clock->area.resize = 1;
  70    clock->area.redraw = 1;
  71
  72    strftime(buf_time, sizeof(buf_time), time1_format, localtime(&time_clock.tv_sec));
  73    if (time2_format)
  74       strftime(buf_date, sizeof(buf_date), time2_format, localtime(&time_clock.tv_sec));
  75
  76    get_text_size(time1_font_desc, &time_height_ink, &time_height, parent->height, buf_time, strlen(buf_time));
  77    clock->time1_posy = (clock->area.height - time_height) / 2;
  78
  79    if (time2_format) {
  80       get_text_size(time2_font_desc, &date_height_ink, &date_height, parent->height, buf_date, strlen(buf_date));
  81
  82       clock->time1_posy -= ((date_height_ink + 2) / 2);
  83       clock->time2_posy = clock->time1_posy + time_height + 2 - (time_height - time_height_ink)/2 - (date_height - date_height_ink)/2;
  84    }
  85 }
  86
  87
  88 void draw_foreground_clock (void *obj, cairo_t *c, int active)
  89 {
  90    Clock *clock = obj;
  91    PangoLayout *layout;
  92
  93    //printf("  draw_foreground_clock : %s en (%d, %d)\n", buf_time, clock->area.posx, clock->area.width);
  94    layout = pango_cairo_create_layout (c);
  95
  96    // draw layout
  97    pango_layout_set_font_description (layout, time1_font_desc);
  98    pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
  99    pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
 100    pango_layout_set_text (layout, buf_time, strlen(buf_time));
 101
 102    cairo_set_source_rgba (c, clock->font.color[0], clock->font.color[1], clock->font.color[2], clock->font.alpha);
 103
 104    pango_cairo_update_layout (c, layout);
 105    cairo_move_to (c, 0, clock->time1_posy);
 106    pango_cairo_show_layout (c, layout);
 107
 108    if (time2_format) {
 109       pango_layout_set_font_description (layout, time2_font_desc);
 110       pango_layout_set_indent(layout, 0);
 111       pango_layout_set_text (layout, buf_date, strlen(buf_date));
 112       pango_layout_set_width (layout, clock->area.width * PANGO_SCALE);
 113
 114       pango_cairo_update_layout (c, layout);
 115       cairo_move_to (c, 0, clock->time2_posy);
 116       pango_cairo_show_layout (c, layout);
 117    }
 118
 119    g_object_unref (layout);
 120 }
 121
 122
 123 void resize_clock (void *obj)
 124 {
 125    Clock *clock = obj;
 126    PangoLayout *layout;
 127    int time_width, date_width, new_width;
 128
 129    time_width = date_width = 0;
 130    clock->area.redraw = 1;
 131
 132    strftime(buf_time, sizeof(buf_time), time1_format, localtime(&time_clock.tv_sec));
 133    if (time2_format)
 134       strftime(buf_date, sizeof(buf_date), time2_format, localtime(&time_clock.tv_sec));
 135
 136    //printf("  resize_clock\n");
 137    cairo_surface_t *cs;
 138    cairo_t *c;
 139         Pixmap pmap;
 140         pmap = XCreatePixmap (server.dsp, server.root_win, clock->area.width, clock->area.height, server.depth);
 141
 142    cs = cairo_xlib_surface_create (server.dsp, pmap, server.visual, clock->area.width, clock->area.height);
 143    c = cairo_create (cs);
 144    layout = pango_cairo_create_layout (c);
 145
 146    // check width
 147    pango_layout_set_font_description (layout, time1_font_desc);
 148    pango_layout_set_indent(layout, 0);
 149    pango_layout_set_text (layout, buf_time, strlen(buf_time));
 150    pango_layout_get_pixel_size (layout, &time_width, NULL);
 151    if (time2_format) {
 152       pango_layout_set_font_description (layout, time2_font_desc);
 153       pango_layout_set_indent(layout, 0);
 154       pango_layout_set_text (layout, buf_date, strlen(buf_date));
 155       pango_layout_get_pixel_size (layout, &date_width, NULL);
 156    }
 157
 158    if (time_width > date_width) new_width = time_width;
 159    else new_width = date_width;
 160    new_width += (2*clock->area.paddingxlr) + (2*clock->area.pix.border.width);
 161
 162    if (new_width > clock->area.width || new_width < (clock->area.width-3)) {
 163       int i;
 164       Panel *panel = ((Area*)obj)->panel;
 165
 166       //printf("clock_width %d, new_width %d\n", clock->area.width, new_width);
 167       // resize clock
 168       clock->area.width = new_width;
 169       clock->area.posx = panel->area.width - clock->area.width - panel->area.paddingxlr - panel->area.pix.border.width;
 170
 171       // resize other objects on panel
 172                 for (i=0 ; i < nb_panel ; i++) {
 173                         panel1[i].area.resize = 1;
 174                 }
 175                 panel_refresh = 1;
 176    }
 177
 178    g_object_unref (layout);
 179    cairo_destroy (c);
 180    cairo_surface_destroy (cs);
 181    XFreePixmap (server.dsp, pmap);
 182 }
 183