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//
// Test page generator for LPrint, a Label Printer Application
//
// Copyright © 2021-2023 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
#include "lprint.h"
//
// 'lprintTestFilterCB()' - Print a test page.
//
bool // O - `true` on success, `false` on failure
lprintTestFilterCB(
pappl_job_t *job, // I - Job
pappl_device_t *device, // I - Output device
void *cbdata) // I - Callback data (not used)
{
pappl_pr_driver_data_t data; // Printer driver data
pappl_pr_options_t *options = papplJobCreatePrintOptions(job, 1, false);
// Print options
unsigned char *line = NULL, // Output line
*lineptr; // Pointer into line
unsigned width, // Width accounting for margins
height, // Height accounting for margins
y, // Current position in page
ytop, yend, ybottom, // Top/end-of-image/bottom lines in page
xc, // X count
x1mm, y1mm, // Number of columns/rows per pixel (nominally 1mm)
xleft, // Start for line
pw, ph; // Image width and height
const char **pixels, // Output image pixels
*pixel; // Current output pixel
bool ret = false; // Return value
static const char *portrait[] = // Portrait label image
{
".... ",
".TTT. ",
".TT. ",
".TT. ..",
".TT...........T.",
".TTTTTTTTTTTTTT.",
".TTTTTTTTTTTTTT.",
".TT...........T.",
".TT. ..",
".TT. ",
".TTT. ",
".... ",
" .. ... ",
" .SS. .SSS. ",
" .SS. .SSSSS. ",
" .SS. .SS..SS. ",
".SS. .SS. .SS.",
".SS. .SS. .SS.",
".SS. .SS. .SS.",
".SS. .SS. .SS.",
" .SS..SS. .SS. ",
" .SSSSS. .SS. ",
" .SSS. .SS. ",
" ... .. ",
".... ....",
".EEE. .EEE.",
".EE. .... .EE.",
".EE. .EEEE. .EE.",
".EE. .EE. .EE.",
".EE. .EE. .EE.",
".EE. .EE. .EE.",
".EE. .EE. .EE.",
".EE....EE....EE.",
".EEEEEEEEEEEEEE.",
".EEEEEEEEEEEEEE.",
"................",
".... ",
".TTT. ",
".TT. ",
".TT. ..",
".TT...........T.",
".TTTTTTTTTTTTTT.",
".TTTTTTTTTTTTTT.",
".TT...........T.",
".TT. ..",
".TT. ",
".TTT. ",
".... "
};
static const char *landscape[] = // Landscape label image
{
"........................ .... ............",
".TTTTTTTTTT..EEEEEEEEEE. ..SSSS.. .TTTTTTTTTT.",
".TTTTTTTTTT..EEEEEEEEEE. .SSSSSSSS. .TTTTTTTTTT.",
".T...TT...T..EE.......E..SSS....SSS..T...TT...T.",
" . .TT. . .EE. . .SS. ..S. . .TT. . ",
" .TT. .EE. . .SS.. . .TT. ",
" .TT. .EE.....E. .SSS.. .TT. ",
" .TT. .EEEEEEEE. .SSSS.. .TT. ",
" .TT. .EEEEEEEE. ..SSSS. .TT. ",
" .TT. .EE.....E. ..SSS. .TT. ",
" .TT. .EE. . . ..SS. .TT. ",
" .TT. .EE. . .S. .SS. .TT. ",
" .TT. .EE.......E..SSS....SSS. .TT. ",
" .TT. .EEEEEEEEEE. .SSSSSSSS. .TT. ",
" .TTTT. .EEEEEEEEEE. ..SSSS.. .TTTT. ",
" ...... ............ .... ...... "
};
(void)cbdata;
// Validate options and allocate a line buffer...
if (!options)
goto done;
if ((line = malloc(options->header.cupsBytesPerLine)) == NULL)
{
papplLogJob(job, PAPPL_LOGLEVEL_ERROR, "Unable to allocate %u bytes for test page: %s", options->header.cupsBytesPerLine, strerror(errno));
goto done;
}
width = options->header.HWResolution[0] * (options->media.size_width - options->media.left_margin - options->media.right_margin) / 2540;
height = options->header.HWResolution[1] * (options->media.size_length - options->media.bottom_margin - options->media.top_margin) / 2540;
papplLogJob(job, PAPPL_LOGLEVEL_DEBUG, "Printable area for test page is %ux%u pixels.", width, height);
if (width > height)
{
// Send landscape raster...
pixels = landscape;
pw = 48;
ph = 16;
}
else
{
// Send portrait raster...
pixels = portrait;
pw = 16;
ph = 48;
}
y1mm = 10 * options->header.HWResolution[1] / 254;
if ((y1mm * ph) > height)
{
if ((y1mm = height / ph) == 0)
y1mm = 1;
}
if ((x1mm = y1mm * options->header.HWResolution[0] / options->header.HWResolution[1]) == 0)
{
x1mm = 1;
y1mm = x1mm * options->header.HWResolution[1] / options->header.HWResolution[0];
}
if ((pw * x1mm) > width)
{
// Too wide, try scaling to fit the width...
x1mm = 10 * options->header.HWResolution[0] / 254;
if ((x1mm * pw) > width)
x1mm = width / pw;
if ((y1mm = x1mm * options->header.HWResolution[1] / options->header.HWResolution[0]) == 0)
{
y1mm = 1;
x1mm = y1mm * options->header.HWResolution[0] / options->header.HWResolution[1];
}
}
papplLogJob(job, PAPPL_LOGLEVEL_DEBUG, "pw=%u, ph=%u, x1mm=%u, y1mm=%u", pw, ph, x1mm, y1mm);
if (((pw + 2) * x1mm) > options->header.cupsWidth || ((ph + 2) * y1mm) > options->header.cupsHeight)
{
papplLogJob(job, PAPPL_LOGLEVEL_ERROR, "Label too small to print test page.");
goto done;
}
pw *= x1mm;
ph *= y1mm;
xleft = (width - pw) / 2 - x1mm + options->header.HWResolution[0] * options->media.left_margin / 2540;
ytop = (height - ph) / 2 + options->header.HWResolution[1] * options->media.top_margin / 2540;
yend = ytop + ph;
ybottom = options->header.cupsHeight - y1mm;
papplLogJob(job, PAPPL_LOGLEVEL_DEBUG, "pw=%u, ph=%u, ytop=%u, yend=%u, ybottom=%u", pw, ph, ytop, yend, ybottom);
// Start the page...
papplPrinterGetDriverData(papplJobGetPrinter(job), &data);
papplJobSetImpressions(job, 1);
if (!(data.rstartjob_cb)(job, options, device))
goto done;
if (!(data.rstartpage_cb)(job, options, device, 1))
goto done;
// Send lines for the test label:
//
// +---------------+
// |...............|
// |... ...|
// |... T E S T ...|
// |... ...|
// |...............|
// +---------------+
// Top border
memset(line, 0, options->header.cupsBytesPerLine);
for (y = 0; y < y1mm; y ++)
{
if (!(data.rwriteline_cb)(job, options, device, y, line))
goto done;
}
// Side borders and gray shading on upper half
memset(line, 0, x1mm);
memset(line + x1mm, 128, options->header.cupsBytesPerLine - 2 * x1mm);
memset(line + options->header.cupsBytesPerLine - x1mm, 0, x1mm);
for (; y < ytop; y ++)
{
if (!(data.rwriteline_cb)(job, options, device, y, line))
goto done;
}
// Side borders, gray shading, and image pixels in middle
for (; y < yend; y ++)
{
// Draw a 50% gray pattern with black borders...
memset(line, 0, x1mm);
memset(line + x1mm, 128, options->header.cupsBytesPerLine - 2 * x1mm);
memset(line + options->header.cupsBytesPerLine - x1mm, 0, x1mm);
// Render the interior text...
for (pixel = pixels[(y - ytop) / y1mm], lineptr = line + xleft; *pixel; pixel ++)
{
for (xc = x1mm; xc > 0; xc --, lineptr ++)
{
if (*pixel == '.')
*lineptr = 255;
else if (!isspace(*pixel))
*lineptr = 0;
}
}
if (!(data.rwriteline_cb)(job, options, device, y, line))
goto done;
}
// Side borders and gray shading on lower half
memset(line, 0, x1mm);
memset(line + x1mm, 128, options->header.cupsBytesPerLine - 2 * x1mm);
memset(line + options->header.cupsBytesPerLine - x1mm, 0, x1mm);
for (; y < ybottom; y ++)
{
if (!(data.rwriteline_cb)(job, options, device, y, line))
goto done;
}
// Bottom border
memset(line, 0, options->header.cupsBytesPerLine);
for (; y < options->header.cupsHeight; y ++)
{
if (!(data.rwriteline_cb)(job, options, device, y, line))
goto done;
}
// Finish up...
if (!(data.rendpage_cb)(job, options, device, 1))
goto done;
if (!(data.rendjob_cb)(job, options, device))
goto done;
ret = true;
papplJobSetImpressionsCompleted(job, 1);
done:
free(line);
papplJobDeletePrintOptions(options);
return (ret);
}
//
// 'lprintTestPageCB()' - Print a test page.
//
const char * // O - Test page file
lprintTestPageCB(
pappl_printer_t *printer, // I - Printer
char *buffer, // I - Filename buffer
size_t bufsize) // I - Size of filename buffer
{
int fd; // File descriptor
char testpage[] = LPRINT_TESTPAGE_HEADER;
// Test page file header
if ((fd = papplCreateTempFile(buffer, bufsize, "testpage", "tst")) < 0)
{
papplLogPrinter(printer, PAPPL_LOGLEVEL_ERROR, "Unable to create temporary file for test page: %s", strerror(errno));
return (NULL);
}
if (write(fd, testpage, sizeof(testpage)) < 0)
{
papplLogPrinter(printer, PAPPL_LOGLEVEL_ERROR, "Unable to write temporary file for test page: %s", strerror(errno));
close(fd);
return (NULL);
}
close(fd);
return (buffer);
}
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