wmfortune/wmfortune.c

   1 /*
   2  * $Id: wmfortune.c,v 0.24 2000/03/28 01:49:58 sugano Exp $
   3  * wmfortune Copyright (c) 2000 Makoto Sugano
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to deal
   7  * in the Software without restriction, including without limitation the rights
   8  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9  * copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  18  * AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  19  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  20  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23 #define BUFF_SIZE 1024
  24 #define SCROLL_DEFAULT_SPEED 1000
  25
  26 #include <unistd.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <libdockapp/dockapp.h>
  30 #include "XPM/panel.xpm"
  31 #include "XPM/panel_button_pressed.xpm"
  32 #include "XPM/panel_window.xpm"
  33
  34 /* WINDOW: window for showing the messages */
  35 #define WINDOW_X 4
  36 #define WINDOW_Y 4
  37 #define WINDOW_WIDTH 56
  38 #define WINDOW_HEIGHT 22
  39
  40 /* BUTTON: button for the new fortune message */
  41 #define BUTTON_X 6
  42 #define BUTTON_Y 32
  43 #define BUTTON_WIDTH 52
  44 #define BUTTON_HEIGHT 28
  45
  46 /* 6 pixels are used to draw a letter */
  47 #define PIXELS_PER_LETTER 6
  48
  49 #define STRING_Y 18
  50
  51 /*
  52  * pixel lag between the last letter of the previous message
  53  * and the first letter of the next message.
  54  * if set to 0, the messages appear quickly after
  55  * the previous messages ends.
  56  */
  57 #define MESSAGE_LAG 5
  58
  59 char *displayName = "";
  60 int speed = SCROLL_DEFAULT_SPEED;
  61
  62 /* global variables for main() and callbacks */
  63 FILE *fortune;
  64 Pixmap pixmap;
  65 Pixmap panel_button_pressed_pixmap;
  66 Pixmap panel_pixmap, panel_mask;
  67 GC gc;
  68 int c;
  69 char buff[BUFF_SIZE];
  70
  71 /*
  72  * i: used to count the number of letters in fill_buff().
  73  * j: the number that points the message starting pixel.
  74  */
  75 int i, j;
  76
  77 /* fill the buffer with the fortune message. */
  78 static void
  79 fill_buff (void)
  80 {
  81   i = 0;
  82
  83   memset(buff, '\0', BUFF_SIZE);
  84   if (!(fortune = popen("fortune -s", "r")))
  85     {
  86       perror("fortune");
  87       exit(0);
  88     }
  89
  90   while (( c = fgetc(fortune)) != EOF)
  91     {
  92       if (c == '\n')
  93         {
  94           buff[i++] = ' ';
  95         }
  96       else if (c == '\t')
  97         {
  98           buff[i++] = ' ';
  99           buff[i++] = ' ';
 100           buff[i++] = ' ';
 101         }
 102       else
 103         {
 104           buff[i++] = c;
 105         }
 106     }
 107
 108   j = i + MESSAGE_LAG;
 109   pclose(fortune);
 110 }
 111
 112 static DAProgramOption options[] = {
 113   {"-d", "--displayname", "display to use.", DOString, False, {&displayName}},
 114   {"-s", "--speed", "scrolling speed. (default 1000 dot/ms)", DOInteger, False, {&speed}},
 115 };
 116
 117 static void
 118 buttonReleaseCallback (int button, int state, int x, int y)
 119 {
 120   if (button == 1 && BUTTON_X < x &&
 121       x < (BUTTON_X + BUTTON_WIDTH) &&
 122       BUTTON_Y < y && y < (BUTTON_Y + BUTTON_HEIGHT))
 123     {
 124       fill_buff();
 125     }
 126   XCopyArea(DADisplay, panel_pixmap, pixmap, gc,
 127             BUTTON_X, BUTTON_Y, BUTTON_WIDTH, BUTTON_HEIGHT,
 128             BUTTON_X, BUTTON_Y);
 129 }
 130
 131 static void
 132 buttonPressCallback (int button, int state, int x, int y)
 133 {
 134   if (button == 1 && BUTTON_X < x &&
 135       x < (BUTTON_X + BUTTON_WIDTH) &&
 136       BUTTON_Y < y && y < (BUTTON_Y + BUTTON_HEIGHT))
 137     {
 138       XCopyArea(DADisplay, panel_button_pressed_pixmap, pixmap, gc,
 139                 BUTTON_X, BUTTON_Y, BUTTON_WIDTH, BUTTON_HEIGHT,
 140                 BUTTON_X, BUTTON_Y);
 141     }
 142 }
 143
 144 int
 145 main(int argc, char **argv)
 146 {
 147    Pixmap panel_window_pixmap;
 148
 149    short unsigned int w = 64, h = 64;
 150
 151    DACallbacks callbacks = {NULL,buttonPressCallback
 152         ,buttonReleaseCallback,NULL,NULL,NULL,NULL};
 153
 154    DAParseArguments(argc, argv, options,
 155                     sizeof(options)/sizeof(DAProgramOption),
 156                     "dockapp that shows the messages from fortune command.", "$Id: wmfortune.c,v 0.24 2000/03/28 01:49:58 sugano Exp $");
 157
 158    fill_buff();
 159
 160    DAInitialize(displayName, "wmfortune", 64, 64, argc, argv);
 161    pixmap = DAMakePixmap();
 162
 163    /* making pixmap for the panel */
 164    DAMakePixmapFromData(panel_xpm, &panel_pixmap,
 165                         &panel_mask, &w, &h);
 166    DAMakePixmapFromData(panel_button_pressed_xpm,
 167                         &panel_button_pressed_pixmap, NULL, &w, &h);
 168    DAMakePixmapFromData(panel_window_xpm,
 169                         &panel_window_pixmap, NULL, &w, &h);
 170
 171    /* setting up the mask for the panel */
 172    DASetShape(panel_mask);
 173    DASetPixmap(panel_pixmap);
 174
 175    /* setting up the graphic context */
 176    gc = DefaultGC(DADisplay, DefaultScreen(DADisplay));
 177
 178    DASetCallbacks(&callbacks);
 179    DAShow();
 180
 181    /* drawing the button */
 182    XCopyArea(DADisplay, panel_pixmap, pixmap, gc,
 183              BUTTON_X, BUTTON_Y, BUTTON_WIDTH, BUTTON_HEIGHT,
 184              BUTTON_X, BUTTON_Y);
 185
 186    while (1)
 187      {
 188        XEvent ev;
 189
 190        /* sets the foreground color green */
 191        XSetForeground(DADisplay, gc, DAGetColor("green"));
 192        XCopyArea(DADisplay, panel_window_pixmap, pixmap, gc,
 193                  WINDOW_X, WINDOW_Y, WINDOW_WIDTH, WINDOW_HEIGHT,
 194                  WINDOW_X, WINDOW_Y);
 195        XDrawString(DADisplay, pixmap, gc, j, STRING_Y, buff, strlen(buff));
 196
 197        DASetPixmap(pixmap);
 198
 199        /* scroll the message by a pixel to left */
 200        i--;
 201        j = i + MESSAGE_LAG;
 202
 203        /*
 204         * starts scrolling the messages from the beginning
 205         * if the message ends.
 206         */
 207        if (j == - (PIXELS_PER_LETTER) * strlen(buff))
 208          {
 209            /* if not 64, message suddenly appears in the window */
 210            i = 64;
 211            j = i + MESSAGE_LAG;
 212          }
 213
 214        /* handle all pending X events */
 215        while (XPending(DADisplay))
 216          {
 217            XNextEvent(DADisplay, &ev);
 218            DAProcessEvent(&ev);
 219          }
 220        usleep(speed);
 221      }
 222    return 0;
 223 }