File: print.c

package info (click to toggle)
x11-apps 7.3+4
  • links: PTS, VCS
  • area: main
  • in suites: lenny
  • size: 10,380 kB
  • ctags: 4,801
  • sloc: ansic: 39,055; sh: 18,739; makefile: 1,163; lex: 162; cpp: 100; yacc: 82
file content (396 lines) | stat: -rw-r--r-- 14,729 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
/*
 * $Xorg: print.c,v 1.1 2004/04/30 02:05:54 gisburn Exp $
 *
Copyright 2004 Roland Mainz <roland.mainz@nrubsig.org>

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.
 *
 */

/* Turn a NULL pointer string into an empty string */
#define NULLSTR(x) (((x)!=NULL)?(x):(""))

#define Error(x) { printf x ; exit(EXIT_FAILURE); }
#define Assertion(expr, msg) { if (!(expr)) { Error msg } }
#define Log(x)   { if(True) printf x; }

#include "print.h"
#include "ScrollByL.h"
#include <X11/Xaw/Form.h>
#include <X11/Xaw/Label.h>
#include <stdio.h>
#include <stdlib.h>

static Widget
CreatePrintShell(Widget    videoshell,
                 Screen   *pscreen,
                 Visual   *pvisual,
                 String    printshell_name,
                 ArgList   args,
                 Cardinal  numargs)
{
    String   videoname,
             videoclass;
    Widget   pappshell,
             printshell;
    Display *pdpy = XDisplayOfScreen(pscreen);
    int      dummyc = 0;
    String   dummys = "";
    Cardinal shell_n;
    Arg      shell_args[5];

    XtGetApplicationNameAndClass(XtDisplay(videoshell), 
                                 &videoname, &videoclass);

    /* XXX: Why is the |dummyc|&&|dummys| stuff needed here ? */
    XtDisplayInitialize(XtWidgetToApplicationContext(videoshell), pdpy,
                        videoname, videoclass,
                        NULL, 0,
                        &dummyc, &dummys);

    shell_n = 0;
    XtSetArg(shell_args[shell_n], XtNscreen, pscreen); shell_n++;
    if (pvisual) {
        XtSetArg(shell_args[shell_n], XtNvisual, pvisual); shell_n++;
    }
    pappshell = XtAppCreateShell(videoname, videoclass,
                                   applicationShellWidgetClass,
                                   pdpy,
                                   shell_args, shell_n);
    printshell = XtCreatePopupShell(printshell_name,
                                    xawPrintShellWidgetClass,
                                    pappshell, args, numargs);
                                

    /* we're mapping/unmapping at start/end page time */
    XtSetMappedWhenManaged(printshell, False);

    /* We realise the widget when we're done with building the widget tree... */
    
    return printshell;
}

typedef struct
{
  const char       *programname;
  Widget            toplevel;
  Bool              isPrinting;
  Widget            printshell;
  struct
  {
      Widget  form;
      Widget  pageheaderlabel;
      Widget  manpage;
  } content; /* content to print */
  int               numpages;
  Display          *pdpy;
  Screen           *pscreen;
  XPContext         pcontext;
  XtCallbackProc    pdpyDestroyCallback;
  void             *printtofile_handle;
  const char       *jobtitle;
} AppPrintData;

static AppPrintData  apdx;
static AppPrintData *apd = &apdx;

/* "Count" pages in a scrollByLineWidgetClass widget */
static
long CountPages(Widget sblw)
{
    long     num_pages = 0;
    Cardinal n;
    Arg      args[3];
    int      num_total_lines   = 0,
             num_visible_lines = 0;
    
    n = 0;
    XtSetArg(args[n], XtNNumTotalLines,   &num_total_lines);   n++;
    XtSetArg(args[n], XtNNumVisibleLines, &num_visible_lines); n++;
    XtGetValues(sblw, args, n);
    
#define DIV_ROUND_UP(a, b) (((a)+((b)-1)) / (b))
    /* scrollByLineWidgetClass's "Page(forward)" always overlaps by one
     * line so we use |num_visible_lines-1| instead of |num_visible_lines| */
    num_pages = DIV_ROUND_UP(num_total_lines, num_visible_lines-1);
#undef DIV_ROUND_UP

    return num_pages;
}

static void 
PageSetupCB(Widget widget, XtPointer client_data, XtPointer call_data)
{
    Widget                       pshell = widget;
    XawPrintShellCallbackStruct *psp    = (XawPrintShellCallbackStruct *)call_data;
    AppPrintData                *p      = (AppPrintData *)client_data;
   
    Log(("--> PageSetupCB\n"));

    if (!psp->last_page_in_job) {
        int  currpage;
        char buffer[256];

        XtVaGetValues(pshell, XawNcurrPageNumInJob, &currpage, NULL);

        sprintf(buffer, "Title: %s / Page: %d/%d", p->jobtitle, currpage, p->numpages);
        XtVaSetValues(apd->content.pageheaderlabel, XtNlabel, buffer, NULL);

        /* Note: XawPrintShell's pagecount starts with '1'
         * (=first page is page no. '1') */
        if (currpage > 1) {
            String params[] = { "Forward" };
            Log(("pagedown %d\n", currpage));
            /* "Page(Forward)" is scrollByLineWidgetClass's way to
             * move one page forward */
            XtCallActionProc(p->content.manpage, "Page", NULL, params, ONE);
        }
        else
        {
            Log(("first page\n"));
        }              
      
        if (currpage >= p->numpages) {
            psp->last_page_in_job = True;
        }
    }
}

static
void FinishPrinting(AppPrintData *p)
{
    /* Wait for the job to finish */
    if (p->printtofile_handle) {
        if (XpuWaitForPrintFileChild(p->printtofile_handle) != XPGetDocFinished) {
            fprintf(stderr, "%s: Error while printing to file.\n", apd->programname);
        }
        p->printtofile_handle = NULL;
    }   

    /* Avoid that the manpage object tries to close the |FILE *|-handle at destruction time */
    XtVaSetValues(p->content.manpage, XtNfile, NULL, NULL);

    if (p->printshell) {
        XtDestroyWidget(p->printshell);
        p->printshell = NULL;
    }
  
    /* Two issues here:
     * 1. The print display connection is owned by the print dialog
     *    To avoid any problems with that use a callback back to the main
     *    application which calls
     *    |XawPrintDialogClosePrinterConnection(w, False)| to ask the
     *    print dialog widget to close all print display resources and
     *    disown the object.
     * 2. We have to use XpDestroyContext() and XtCloseDisplay()
     *    instead of XpuClosePrinterDisplay() to make libXt happy...
     *
     * Call callback... */
    (*apd->pdpyDestroyCallback)(p->toplevel, NULL, NULL); /* HACK! */

    /* ... and then get rid of the display */
    if (p->pcontext != None) {
        XpDestroyContext(p->pdpy, p->pcontext);
    }
    XtCloseDisplay(p->pdpy);

    p->toplevel   = NULL;
    p->isPrinting = False;
    p->pdpy       = NULL;
    p->pscreen    = NULL;
    p->pcontext   = None;
}

static
void PrintEndJobCB(Widget pshell, XtPointer client_data, XtPointer call_data)
{
    AppPrintData *p = (AppPrintData *)client_data;

    Log(("--> PrintEndJobCB\n"));

    /* Finish printing and destroy print shell (it's legal to destroy Xt
     * widgets from within it's own callbacks) */
    FinishPrinting(p);
}

static
XFontStruct *GetPrintTextFont(Display *pdpy, const char *fontprefix, long dpi_x, long dpi_y)
{
    XFontStruct *font;
    char         fontname[1024];

    sprintf(fontname, "%s--*-120-%ld-%ld-*-*-iso8859-1", fontprefix, dpi_x, dpi_y);
    font = XLoadQueryFont(pdpy, fontname);
    if (!font) {    
        sprintf(fontname, "-adobe-courier-medium-r-normal--*-120-%ld-%ld-*-*-iso8859-1", dpi_x, dpi_y);
        font = XLoadQueryFont(pdpy, fontname);
    }
    if (!font) {          
        sprintf(fontname, "-*-*-*-*-*-*-*-120-%ld-%ld-*-*-iso8859-1", dpi_x, dpi_y);
        font = XLoadQueryFont(pdpy, fontname);
    }
    if (!font)
        Error(("XLoadQueryFont failure.\n"));
    return font;

}

void DoPrintManpage(const char *programname,
                    FILE *manpagefile, Widget toplevel,
                    Display *pdpy, XPContext pcontext,
                    XpuColorspaceRec *colorspace,
                    XtCallbackProc pdpyDestroyCB,
                    const char *jobtitle, const char *toFile)
{
    long               dpi_x = 0L,
                       dpi_y = 0L;
    int                n;
    Arg                args[20];
    XFontStruct       *printFontNormal;
    XFontStruct       *printFontBold;
    XFontStruct       *printFontItalic;
    XFontStruct       *printFontSymbol;

    if (!manpagefile) {
        Error(("DoPrintManpage: No FILE given."));
    }
       
    apd->programname         = programname;
    apd->pdpyDestroyCallback = pdpyDestroyCB;
  
    if (apd->isPrinting) {
        fprintf(stderr, "%s: Already busy with printing.\n", apd->programname);
        return;
    } 
        
    /* Configure the print context (paper size, title etc.)
     * We must do this before creating any Xt widgets - otherwise they will
     * make wrong assuptions about fonts, resultions etc. ...
     */
    XpuSetJobTitle(pdpy, pcontext, jobtitle);
    
    /* Configuration done, set the context */
    XpSetContext(pdpy, pcontext);   

    /* Get default printer resolution */   
    if (XpuGetResolution(pdpy, pcontext, &dpi_x, &dpi_y) != 1) {
        fprintf(stderr, "%s: No default resolution for printer.\n", apd->programname);
        XpuClosePrinterDisplay(pdpy, pcontext);
        return;
    }
    
    apd->toplevel = toplevel;
    apd->pdpy     = pdpy;
    apd->pcontext = pcontext;
    apd->pscreen  = XpGetScreenOfContext(pdpy, pcontext);
    apd->jobtitle = jobtitle;

    n = 0;
    /* Override any geometry resource settings as XawPrintShell adjusts it's size
     * to the current page siue when |XawPrintLAYOUTMODE_DRAWABLEAREA| or
     * |XawPrintLAYOUTMODE_PAGESIZE| are used. */
    XtSetArg(args[n], XtNgeometry,    "+0+0");                          n++;
    XtSetArg(args[n], XawNlayoutMode, XawPrintLAYOUTMODE_DRAWABLEAREA); n++;
    if (colorspace) {
        printf("Setting visual to id=0x%lx.\n", colorspace->visualinfo.visualid);
    }
    apd->printshell = CreatePrintShell(toplevel, apd->pscreen, 
                                       (colorspace?(colorspace->visualinfo.visual):(NULL)),
                                       "printshell", args, n);

    n = 0;
    XtSetArg(args[n], XtNresizable,            True);            n++;
    XtSetArg(args[n], XtNright,                XtChainRight);    n++;
    apd->content.form = XtCreateManagedWidget("form", formWidgetClass, apd->printshell, args, n);

    printFontNormal = GetPrintTextFont(pdpy, "-*-courier-medium-r-*", dpi_x, dpi_y);
    printFontBold   = GetPrintTextFont(pdpy, "-*-courier-bold-r-*",   dpi_x, dpi_y);
    printFontItalic = GetPrintTextFont(pdpy, "-*-courier-medium-o-*", dpi_x, dpi_y);
    printFontSymbol = GetPrintTextFont(pdpy, "-*-symbol-*-*-*",       dpi_x, dpi_y);

    n = 0;
    XtSetArg(args[n], XtNfromHoriz,            NULL);            n++;
    XtSetArg(args[n], XtNfromVert,             NULL);            n++;
    XtSetArg(args[n], XtNtop,                  XtChainTop);      n++;
    XtSetArg(args[n], XtNright,                XtChainRight);    n++;
    XtSetArg(args[n], XtNresizable,            True);            n++;
    XtSetArg(args[n], XtNfont,                 printFontNormal); n++; /* fontset would be better */
    XtSetArg(args[n], XtNlabel,                "Page: n/n");     n++;
    XtSetArg(args[n], XtNjustify,              XtJustifyRight);  n++;
    apd->content.pageheaderlabel = XtCreateManagedWidget("pageinfo", labelWidgetClass, apd->content.form, args, n);

    n = 0;
    XtSetArg(args[n], XtNfile,             manpagefile);                  n++;

/* Usually I would expect that using |XtNfromVert, apd->content.pageheaderlabel|
 * would be the correct way to place the text widget with the main content below
 * the page header widget - but for an unknown reason this doesn not work: The
 * text widget squishes itself into the bottom half of the page and only occupies
 * 1/2 of the page's with... ;-(( */
#define WORKAROUND_FOR_SOMETHING_IS_WRONG 1
#ifdef WORKAROUND_FOR_SOMETHING_IS_WRONG
    XtSetArg(args[n], XtNtop,              XtChainTop);                   n++;
    XtSetArg(args[n], XtNright,            XtChainRight);                 n++;
    XtSetArg(args[n], XtNvertDistance,     (printFontNormal->ascent+printFontNormal->descent+2)*2); n++;    
#else
    XtSetArg(args[n], XtNfromHoriz,        NULL);                         n++;
    XtSetArg(args[n], XtNfromVert,         apd->content.pageheaderlabel); n++;
#endif

    XtSetArg(args[n], XtNmanualFontNormal, printFontNormal);              n++;
    XtSetArg(args[n], XtNmanualFontBold,   printFontBold);                n++;
    XtSetArg(args[n], XtNmanualFontItalic, printFontItalic);              n++;
    XtSetArg(args[n], XtNmanualFontSymbol, printFontSymbol);              n++;
    apd->content.manpage = XtCreateManagedWidget("manpage", scrollByLineWidgetClass, apd->content.form, args, n);
   
    XtAddCallback(apd->printshell, XawNpageSetupCallback, PageSetupCB,   (XtPointer)apd);
    XtAddCallback(apd->printshell, XawNendJobCallback,    PrintEndJobCB, (XtPointer)apd);

    /* Realise print shell (which will set position+size of the child
     * widgets based on the current page size) */
    XtRealizeWidget(apd->printshell);
    
    /* Count number of pages in the manpage widget */
    apd->numpages = CountPages(apd->content.manpage);

    /* Make sure that the Xt machinery is really using the right screen (assertion) */
    if (XpGetScreenOfContext(XtDisplay(apd->printshell), apd->pcontext) != XtScreen(apd->printshell))
        Error(("Widget's screen != print screen. BAD.\n"));

    apd->isPrinting = True;

    if (toFile) {
        printf("%s: Printing to file '%s'...\n", apd->programname, toFile);
        apd->printtofile_handle = XpuStartJobToFile(pdpy, pcontext, toFile);
        if (!apd->printtofile_handle) {
            perror("XpuStartJobToFile failure");
            apd->isPrinting = False;
            return;
        }
    }
    else
    {
        printf("%s: Printing to printer...\n", apd->programname);
        XpuStartJobToSpooler(pdpy);
    }
}