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PHP : Function Reference : Printer Functions : printer_draw_bmp

printer_draw_bmp

Draw a bmp ()
bool printer_draw_bmp ( resource printer_handle, string filename, int x, int y [, int width, int height] )

Example 1992. printer_draw_bmp() example

<?php
$handle
= printer_open();
printer_start_doc($handle, "My Document");
printer_start_page($handle);

printer_draw_bmp($handle, "c:\\image.bmp", 1, 1);

printer_end_page($handle);
printer_end_doc($handle);
printer_close($handle);
?>

Code Examples / Notes » printer_draw_bmp

ramiro_puc

When trying to print any image file it was getting a very, very small as someone said above. To solve this problem, ive made a script that will calculate the correct size of image before output it to printer.
Most of InkJet printers use 300 dpi. You can change values if you have any other printer... In this case, im using a HP DeskJet 930c.
To make this script better, you can use GD to discover image resolution automatically.
<?php
$handle = printer_open();
printer_start_doc($handle, "My Document");
printer_start_page($handle);
$largura = 415; //Image Width in Pixels
$altura = 284;  //Image Height in Pixels
$fator_x = $largura / 72; //Image Resolution (72 ppi)
$fator_y = $largura / 300; //Printer Resolution (300 dpi)
$fator_z = $fator_x / $fator_y;
$largura_f = $largura * $fator_z;
$altura_f = $altura * $fator_z;
printer_set_option($handle, PRINTER_MODE, "RAW");
printer_draw_bmp($handle, "c:\image.bmp", 1, 1, $largura_f, $altura_f);
printer_end_page($handle);
printer_end_doc($handle);
printer_close($handle);
?>


da_vinci7

what i notice was that
[qoute]
void printer_draw_bmp ( resource handle, string filename, int x, int y)
[/qoute]
is only that here only the starting x and y are shown
and that if you have an bmp with the size 600 x 120 wil be shown as 600x120 pixels and printed very very smale
and when i tried giving ending x and y like this:
<?
 printer_draw_bmp($handle, $file, 1, 1, 4600, 860)
?>
it printed the image in the correct size


lapoa

something I found out the hard way...
in order for the example above to work, the file being printed must be in a directory that has been opened for reading.
The example in the docs should probably have been listed as:
(There should probably be a check for the filename, but this should give an idea)
<?php
$dir = 'c:\\somedir';
$file = 'myimage.bmp';
if (is_dir($dir)) {
  if($dhandle = opendir($dir)) {
     $handle = printer_open();
     printer_start_doc($handle, "My Document");
     printer_start_page($handle);
     printer_draw_bmp($handle, $file, 1, 1);
     printer_end_page($handle);
     printer_end_doc($handle);
     printer_close($handle);
  }
  closedir($dhandle);
}
?>


codeslinger

Don't get confused by the example.  The X Y offset is Base 0  not 1.  The example was trying to show that you could position the image elsewhere.
Also, the X Y offsets accept a negative value which can be very handy if you want to print just part of the image.  Such as when splitting an image across multiple pages.
Most (all?) printers will shift your output by the amount of the "unprintable" area.
Suppose you want to print an image at exactly X = 0.25, Y = 0.25 inches (from the top left).
On a typical printer with an unprintable area of 0.116 inches, the printer adds that amount as an offset.  So, to compensate you just subtract the offset.  
$X = 0.25 - 0.116;
$Y = 0.25 - 0.116;
With the result being that your image will be physically located where you intended.
Keep in mind that the unprintable area can be a different amount for the X and Y, for this example printer they both just happen to be the same.
Now the catch is that printer_get_option does not provide a way to get the unprintable area size.


fuzzmaster

Added a bit a fuzz:
 function print_img($doc,$img,$res,$pos_x,$pos_y)
   {
    $img_size = getimagesize($img);
    $img_resolution = $res;
    $img_width = $img_size[0];
    $img_height = $img_size[1];
    echo $img_width.'
';
    echo $img_height.'
';
    $ptr_resolution_x = printer_get_option($doc, PRINTER_RESOLUTION_X);
    $ptr_resolution_y = printer_get_option($doc, PRINTER_RESOLUTION_Y);
    echo $ptr_resolution_x.'
';
    echo $ptr_resolution_y.'
';
    $img_scale_x = $ptr_resolution_x / $img_resolution;
    $img_scale_y = $ptr_resolution_y / $img_resolution;
    echo $img_scale_x.'
';
    echo $img_scale_y.'
';
    $ptr_width = $img_width * $img_scale_x;
    $ptr_height = $img_height * $img_scale_y;
    echo $doc.'
';
    echo $ptr_width.'
';
    echo $ptr_height.'
';
 
    printer_draw_bmp($doc,$img,$pos_x,$pos_y,$ptr_width,$ptr_height);
   }
print_img($handle, '../img/someimage.bmp', 72, 10, 10);
Of course, if someone can figure out how to capture the resolution of the image from the file that's one less value to manually assign.


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printer_close
printer_create_brush
printer_create_dc
printer_create_font
printer_create_pen
printer_delete_brush
printer_delete_dc
printer_delete_font
printer_delete_pen
printer_draw_bmp
printer_draw_chord
printer_draw_elipse
printer_draw_line
printer_draw_pie
printer_draw_rectangle
printer_draw_roundrect
printer_draw_text
printer_end_doc
printer_end_page
printer_get_option
printer_list
printer_logical_fontheight
printer_open
printer_select_brush
printer_select_font
printer_select_pen
printer_set_option
printer_start_doc
printer_start_page
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