how to view pdf file in asp.net using c# : Extract image from pdf c# Library SDK component .net wpf windows mvc cips2ed41-part1040

F.1. CODE LISTINGS FOR CHAPTER 1
389
{
char response[80];
char
name[80], name2[80];
int
i
= 0,
ie
= 0,
il
= 0,
j
= 0,
in_length = 0,
out_length = 0,
in_width
= 0,
out_width = 0;
short
**the_image, **out_image;
struct bmpfileheader
bmp_file_header;
struct bitmapheader
bmheader;
struct tiff_header_struct tiff_file_header;
/******************************************
*
*
Ensure the command line is correct.
*
******************************************/
if(argc < 5
||
(argc > 5 && argc < 7)){
printf("\nusage: roundoff in-image out-image"
" length width [il ie]"
"\n"
"\n
If you do not specify il ie"
" they will be set to 1 1."
"\n
ll le will always be"
" il+length and ie+width"
"\n");
exit(0);
}
strcpy(name, argv[1]);
strcpy(name2, argv[2]);
out_length = atoi(argv[3]);
out_width = atoi(argv[4]);
if(argc > 5){
il = atoi(argv[5]);
ie = atoi(argv[6]);
}
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390
APPENDIX F. SOURCE CODE LISTINGS
if(does_not_exist(name)){
printf("\nERROR input file %s does not exist",
name);
exit(0);
}
get_image_size(name, &in_length, &in_width);
the_image = allocate_image_array(in_length,
in_width);
read_image_array(name, the_image);
/******************************************
*
*
Create the output image and allocate
*
the output image array.
*
******************************************/
if(is_a_tiff(name)){
read_tiff_header(name, &tiff_file_header);
tiff_file_header.image_length = out_length;
tiff_file_header.image_width = out_width;
create_allocate_tiff_file(name2,
&tiff_file_header);
}
if(is_a_bmp(name)){
read_bmp_file_header(name,
&bmp_file_header);
read_bm_header(name, &bmheader);
bmheader.height = out_length;
bmheader.width = out_width;
create_allocate_bmp_file(name2,
&bmp_file_header,
&bmheader);
}
out_image = allocate_image_array(out_length, out_width);
/******************************************
*
*
Copy the input image array to the output
*
image array per the input parameters.
*
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F.1. CODE LISTINGS FOR CHAPTER 1
391
******************************************/
for(i=0; i<out_length; i++)
for(j=0; j<out_width; j++)
out_image[i][j] = the_image[i+il][j+ie];
write_image_array(name2, out_image);
free_image_array(out_image, out_length);
free_image_array(the_image, in_length);
} /* ends main */
Listing 1.5 - The round Program
/************************************************
*
*
file tif2bmp.c
*
*
Functions: This file contains
*
main
*
*
Purpose:
*
This program creates a bmp file
*
that is just like the input tiff file.
*
*
External Calls:
*
imageio.c
*
does_not_exist
*
get_image_size
*
read_image_array
*
write_image_array
*
free_image_array
*
create_allocate_bmp_file
*
*
Modifications:
*
27 September 1998 - created
*
*************************************************/
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392
APPENDIX F. SOURCE CODE LISTINGS
#include "cips.h"
main(argc, argv)
int argc;
char *argv[];
{
char
*cc;
int
l, w;
int
ok = 0;
short **the_image;
struct tiff_header_struct image_header;
struct bmpfileheader
bmp_file_header;
struct bitmapheader
bmheader;
if(argc < 3 || argc > 3){
printf(
"\nusage: tif2bmp tif-file-name bmp-file-name\n");
exit(-1);
}
if(does_not_exist(argv[1])){
printf("\nERROR input file %s does not exist",
argv[1]);
exit(0);
}
cc = strstr(argv[1], ".tif");
if(cc == NULL){
printf("\nERROR %s must be a tiff file",
argv[1]);
exit(0);
} /* ends tif */
cc = strstr(argv[2], ".bmp");
if(cc == NULL){ /* create a bmp */
printf("\nERROR %s must be a bmp file name",
argv[2]);
exit(0);
}
get_image_size(argv[1], &l, &w);
the_image
= allocate_image_array(l, w);
bmheader.height = l;
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F.1. CODE LISTINGS FOR CHAPTER 1
393
bmheader.width = w;
create_allocate_bmp_file(argv[2],
&bmp_file_header,
&bmheader);
read_image_array(argv[1], the_image);
write_image_array(argv[2], the_image);
free_image_array(the_image, l);
} /* ends main */
Listing 1.6 - The tif2bmp Program
/************************************************
*
*
file bmp2tif.c
*
*
Functions: This file contains
*
main
*
*
Purpose:
*
This program creates a tiff file
*
that is just like the input bmp file.
*
*
External Calls:
*
imageio.c
*
does_not_exist
*
get_image_size
*
read_image_array
*
write_image_array
*
free_image_array
*
create_allocate_tif_file
*
*
Modifications:
*
27 September 1998 - created
*
*************************************************/
#include "cips.h"
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394
APPENDIX F. SOURCE CODE LISTINGS
main(argc, argv)
int argc;
char *argv[];
{
char
*cc;
int
l, w;
int
ok = 0;
short **the_image;
struct tiff_header_struct image_header;
struct bmpfileheader
bmp_file_header;
struct bitmapheader
bmheader;
if(argc < 3 || argc > 3){
printf(
"\nusage: bmp2tif bmp-file-name tif-file-name\n");
exit(-1);
}
if(does_not_exist(argv[1])){
printf("\nERROR input file %s does not exist",
argv[1]);
exit(0);
}
cc = strstr(argv[1], ".bmp");
if(cc == NULL){
printf("\nERROR %s must be a bmp file",
argv[1]);
exit(0);
} /* ends tif */
cc = strstr(argv[2], ".tif");
if(cc == NULL){ /* create a bmp */
printf("\nERROR %s must be a tiff file name",
argv[2]);
exit(0);
}
get_image_size(argv[1], &l, &w);
the_image = allocate_image_array(l, w);
image_header.lsb
= 1;
image_header.bits_per_pixel = 8;
image_header.image_length
= l;
image_header.image_width
= w;;
F.2. CODE LISTINGS FOR CHAPTER 2
395
image_header.strip_offset
= 1000;
create_allocate_tiff_file(argv[2],
&image_header);
read_image_array(argv[1], the_image);
write_image_array(argv[2], the_image);
free_image_array(the_image, l);
} /* ends main */
Listing 1.7 - The bmp2tif Program
F.2 Code Listings for Chapter 2
/***********************************************
*
*
file showi.c
*
*
Functions: This file contains
*
main
*
show_screen
*
is_in_image
*
*
Purpose:
*
This file contains the program
*
that shows image numbers on the screen.
*
*
External Calls:
*
imageio.c - get_image_size
*
read_image_array
*
allocate_image_array
*
free_image_array
*
*
Modifications:
*
1 October 1998 - created to work with
*
all I O routines in imageio.c.
*
*************************************************/
#include "cips.h"
396
APPENDIX F. SOURCE CODE LISTINGS
#define SHEIGHT 20
#define SWIDTH 15
main(argc, argv)
int argc;
char *argv[];
{
char in_name[MAX_NAME_LENGTH];
char response[MAX_NAME_LENGTH];
int
ie, il, not_done, temp_ie, temp_il;
long height, width;
short **the_image;
/******************************************
*
*
Ensure the command line is correct.
*
******************************************/
if(argc != 4){
printf("\nusage: showi input-image il ie");
exit(0);
}
strcpy(in_name, argv[1]);
il = atoi(argv[2]);
ie = atoi(argv[3]);
/******************************************
*
*
Ensure the input image exists.
*
Allocate an image array.
*
Read the image and show it on the
*
screen.
*
******************************************/
if(does_not_exist(in_name)){
printf("\nERROR input file %s does not exist",
in_name);
exit(0);
} /* ends if does_not_exist */
get_image_size(in_name, &height, &width);
the_image = allocate_image_array(height, width);
F.2. CODE LISTINGS FOR CHAPTER 2
397
read_image_array(in_name, the_image);
temp_il = il;
temp_ie = ie;
not_done = 1;
while(not_done){
if(is_in_image(temp_il, temp_ie, height, width)){
il = temp_il;
ie = temp_ie;
show_screen(the_image, il, ie);
} /* ends if is_in_image */
printf("\n\n x=quit j=down k=up h=left l=right"
"\nEnter choice and press Enter: ");
gets(response);
if(response[0] == ’x’ || response[0] == ’X’)
not_done = 0;
if(response[0] == ’j’ || response[0] == ’J’)
temp_il = temp_il + ((3*SHEIGHT)/4);
if(response[0] == ’k’ || response[0] == ’K’)
temp_il = temp_il - ((3*SHEIGHT)/4);
if(response[0] == ’h’ || response[0] == ’H’)
temp_ie = temp_ie - ((3*SWIDTH)/4);
if(response[0] == ’l’ || response[0] == ’L’)
temp_ie = temp_ie + ((3*SWIDTH)/4);
} /* ends while not_done */
free_image_array(the_image, height);
} /* ends main */
int is_in_image(il, ie, height, width)
int il, ie;
long height, width;
{
int result = 1;
if(il < 0){
printf("\nil=%d tool small", il);
result = 0;
}
398
APPENDIX F. SOURCE CODE LISTINGS
if(ie < 0){
printf("\nie=%d tool small", ie);
result = 0;
}
if((il+SHEIGHT) > height ){
printf("\nll=%d tool big", il+SHEIGHT);
result = 0;
}
if((ie+SWIDTH) > width ){
printf("\nle=%d tool big", ie+SWIDTH);
result = 0;
}
return(result);
} /* ends is_in_image */
show_screen(the_image, il, ie)
int il, ie;
short **the_image;
{
int i, j;
printf("\n
");
for(i=ie-1; i<ie-1+SWIDTH; i++)
printf("-%3d", i);
for(i=il-1; i<il-1+SHEIGHT; i++){
printf("\n%4d>", i);
for(j=ie-1; j<ie-1+SWIDTH; j++){
printf("-%3d", the_image[i][j]);
}
}
} /* ends show_screen */
Listing 2.1 - The Showi Program
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