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