modules/plugin/sdk/samples/unixprinting/printplugin.c

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   3  *
   4  * The contents of this file are subject to the Mozilla Public License Version
   5  * 1.1 (the "License"); you may not use this file except in compliance with
   6  * the License. You may obtain a copy of the License at
   7  * http://www.mozilla.org/MPL/
   8  *
   9  * Software distributed under the License is distributed on an "AS IS" basis,
  10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11  * for the specific language governing rights and limitations under the
  12  * License.
  13  *
  14  * The Original Code is mozilla.org code.
  15  *
  16  * The Initial Developer of the Original Code is
  17  * Dantifer Dang <dantifer.dang@sun.com>.
  18  * Portions created by the Initial Developer are Copyright (C) 2004
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Roland Mainz <roland.mainz@nrubsig.org>
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
  29  * under the terms of either the GPL or the LGPL, and not to allow others to
  30  * use your version of this file under the terms of the MPL, indicate your
  31  * decision by deleting the provisions above and replace them with the notice
  32  * and other provisions required by the GPL or the LGPL. If you do not delete
  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 /* Xlib/Xt stuff */
  39 #ifdef MOZ_X11
  40 #include <X11/Xlib.h>
  41 #include <X11/Intrinsic.h>
  42 #include <X11/cursorfont.h>
  43 #endif /* MOZ_X11 */
  44
  45 #include "npapi.h"
  46 #include "printplugin.h"
  47 #include "prprf.h"
  48
  49 #include <stdlib.h>
  50 #include <stdio.h>
  51
  52 /* MIMETypeList maintenance routines */
  53 NPMIMEType
  54 dupMimeType(NPMIMEType type)
  55 {
  56     NPMIMEType mimetype = NPN_MemAlloc(strlen(type)+1);
  57     if (mimetype)
  58         strcpy(mimetype, type);
  59     return mimetype;
  60 }
  61
  62 static void
  63 privatePrintScreenMessage(PluginInstance *This)
  64 {
  65 #ifdef MOZ_X11
  66     GC gc;
  67     unsigned int h,w;
  68     int x,y,l;
  69     const char *string;
  70     gc = XCreateGC(This->display, This->window, 0, NULL);
  71
  72     /* draw a rectangle */
  73     h = This->height/2;
  74     w = 3 * This->width/4;
  75     x = (This->width - w)/2; /* center */
  76     y = h/2;
  77     XDrawRectangle(This->display, This->window, gc, x, y, w, h);
  78
  79     /* draw a string */
  80     string = This->pluginsPrintMessage;
  81     if (string && *string)
  82     {
  83         l = strlen(string);
  84         x += This->width/10;
  85         XDrawString(This->display, This->window, gc, x, This->height/2, string, l);
  86     }
  87     XFreeGC(This->display, gc);
  88 #endif /* MOZ_X11 */
  89 }
  90
  91 static void
  92 setCursor (PluginInstance *This)
  93 {
  94 #ifdef MOZ_X11
  95     static Cursor nullPluginCursor = None;
  96     if (!nullPluginCursor)
  97     {
  98         nullPluginCursor = XCreateFontCursor(This->display, XC_hand2);
  99     }
 100     if (nullPluginCursor)
 101     {
 102         XDefineCursor(This->display, This->window, nullPluginCursor);
 103     }
 104 #endif /* MOZ_X11 */
 105 }
 106
 107 #ifdef MOZ_X11
 108 static void
 109 xt_event_handler(Widget xt_w, PluginInstance *This, XEvent *xevent, Boolean *b)
 110 {
 111     switch (xevent->type)
 112     {
 113         case Expose:
 114             /* get rid of all other exposure events */
 115             while(XCheckTypedWindowEvent(This->display, This->window, Expose, xevent))
 116                 privatePrintScreenMessage(This);
 117             break;
 118         case ButtonRelease:
 119             break;
 120         default:
 121             break;
 122     }
 123 }
 124 #endif /* MOZ_X11 */
 125
 126 static void
 127 addXtEventHandler(PluginInstance *This)
 128 {
 129 #ifdef MOZ_X11
 130      Display *dpy = (Display*) This->display;
 131      Window xwin = (Window) This->window;
 132      Widget xt_w = XtWindowToWidget(dpy, xwin);
 133      if (xt_w)
 134      {
 135          long event_mask = ExposureMask | ButtonReleaseMask | ButtonPressMask;
 136          XSelectInput(dpy, xwin, event_mask);
 137          XtAddEventHandler(xt_w, event_mask, False, (XtEventHandler)xt_event_handler, This);
 138      }
 139 #endif /* MOZ_X11 */
 140 }
 141
 142 void printScreenMessage(PluginInstance *This)
 143 {
 144     privatePrintScreenMessage(This);
 145     setCursor(This);
 146     addXtEventHandler(This);
 147 }
 148
 149
 150 void printEPSMessage(PluginInstance *This, FILE *output, NPWindow window)
 151 {
 152     char *string;
 153     int x,y,h,w;
 154
 155     if (!output)
 156       return;
 157
 158     fprintf(output, "%%!PS-Adobe-3.0 EPSF-3.0\n");
 159     fprintf(output, "%%%%BoundingBox: 0 0 %d %d\n", window.width, window.height);
 160     fprintf(output, "%%%%EndComments\n");
 161     fprintf(output, "gsave\n");
 162
 163     w = 3 * window.width  / 4;
 164     h =     window.height / 2;
 165     x = (window.width - w)/2; /* center */
 166     y = h/2;
 167
 168     /* draw a rectangle */
 169     fprintf(output, "newpath\n");
 170     fprintf(output, "%d %d moveto 0 %d rlineto %d 0 rlineto 0 %d rlineto\n",
 171             x, y, h, w, -h);
 172     fprintf(output, "closepath\n");
 173     fprintf(output, "stroke\n");
 174
 175     /* draw a string */
 176     string = This->pluginsPrintMessage;
 177     if (string && *string)
 178     {
 179         fprintf(output, "/Times-Roman findfont 300 scalefont setfont\n");
 180         fprintf(output, "%d %d moveto\n", x + window.width/10, window.height / 2);
 181         fprintf(output, "(%s) show\n",string);
 182     }
 183
 184     fprintf(output,"grestore\n");
 185     fprintf(output,"%%%%EOF\n");
 186 }
 187