LibHaru编译使用

最近公司准备在PDF方面发力了，我也要行动起来，就找到了LibHaru这个开源库

编译Libharu需要用到zlib库和libpng库，libpng库又依赖zlib库.

zlib 下载地址：http://www.zlib.net/

libpng下载地址：http://www.libpng.org/pub/png/libpng.html

libharu下载地址：http://libharu.org/

下载好后，最好放到一个单独的文件夹下，

进入目录  D:\Users\PDF\lpng\projects\visualc71 里面有VS的工程，根据自己的需求编译DLL或者LIb选择不同的编译选项，

设置libpng工程的zlib头文件路径，zlib工程和上图一样，编译后，生成libpng.lib和zlib.lib，2个静态库。

为了方便编译Libharu，将zlib和libpng的头文件与静态库，单独存放到各自的include和lib文件夹里。

修改D:\Users\PDF\libharu\script\Makefile.msvc文件，如下图所示的2处

管理员 运行 “VS2008命令提示” ，

cd /D D:\Users\PDF\libharu

nmake script/Makefile.msvc

至此，LibHaru编译完成。

创建win32命令行工程测试下。

 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <setjmp.h>
 #include "hpdf.h"

 #ifndef HPDF_NOPNGLIB

 jmp_buf env;

 #ifdef HPDF_DLL
 void  __stdcall
 #else
 void
 #endif
 error_handler  (HPDF_STATUS   error_no,
                 HPDF_STATUS   detail_no,
                 void         *user_data)
 {
     printf ("ERROR: error_no=%04X, detail_no=%u\n", (HPDF_UINT)error_no,
                 (HPDF_UINT)detail_no);
     longjmp(env, );
 }

 void
 draw_image (HPDF_Doc     pdf,
             const char  *filename,
             float        x,
             float        y,
             const char  *text)
 {
 #ifdef __WIN32__
     const char* FILE_SEPARATOR = "\\";
 #else
     const char* FILE_SEPARATOR = "/";
 #endif
     char filename1[];

     HPDF_Page page = HPDF_GetCurrentPage (pdf);
     HPDF_Image image;

     strcpy(filename1, "pngsuite");
     strcat(filename1, FILE_SEPARATOR);
     strcat(filename1, filename);

     image = HPDF_LoadPngImageFromFile (pdf, filename1);

     /* Draw image to the canvas. */
     HPDF_Page_DrawImage (page, image, x, y, HPDF_Image_GetWidth (image),
                     HPDF_Image_GetHeight (image));

     /* Print the text. */
     HPDF_Page_BeginText (page);
     HPDF_Page_SetTextLeading (page, );
     HPDF_Page_MoveTextPos (page, x, y);
     HPDF_Page_ShowTextNextLine (page, filename);
     HPDF_Page_ShowTextNextLine (page, text);
     HPDF_Page_EndText (page);
 }

 int main (int argc, char **argv)
 {
     HPDF_Doc  pdf;
     HPDF_Font font;
     HPDF_Page page;
     char fname[];
     HPDF_Destination dst;

     strcpy (fname, argv[]);
     strcat (fname, ".pdf");

     pdf = HPDF_New (error_handler, NULL);
     if (!pdf) {
         printf ("error: cannot create PdfDoc object\n");
         return ;
     }

     /* error-handler */
     if (setjmp(env)) {
         HPDF_Free (pdf);
         return ;
     }

     HPDF_SetCompressionMode (pdf, HPDF_COMP_ALL);

     /* create default-font */
     font = HPDF_GetFont (pdf, "Helvetica", NULL);

     /* add a new page object. */
     page = HPDF_AddPage (pdf);

     HPDF_Page_SetWidth (page, );
     HPDF_Page_SetHeight (page, );

     dst = HPDF_Page_CreateDestination (page);
     HPDF_Destination_SetXYZ (dst, , HPDF_Page_GetHeight (page), );
     HPDF_SetOpenAction(pdf, dst);

     HPDF_Page_BeginText (page);
     HPDF_Page_SetFontAndSize (page, font, );
     HPDF_Page_MoveTextPos (page, , HPDF_Page_GetHeight (page) - );
     HPDF_Page_ShowText (page, "PngDemo");
     HPDF_Page_EndText (page);

     HPDF_Page_SetFontAndSize (page, font, );

     draw_image (pdf, "hand.png", , /*HPDF_Page_GetHeight (page)*/,
                 "1bit grayscale.");

     /* save the document to a file */
     HPDF_SaveToFile (pdf, fname);

     /* clean up */
     HPDF_Free (pdf);

     return ;
 }

 #else /* HPDF_NOPNGLIB */

 int main()
 {
     printf("WARNING: if you want to run this demo, \n"
            "make libhpdf with HPDF_USE_PNGLIB option.\n");
     return ;
 }

 #endif /* HPDF_NOPNGLIB */

工程头文件目录

D:\Users\PDF\libharu\include;

D:\Users\PDF\lpng\include;

D:\Users\PDF\zlib\include;

D:\Users\PDF\libharu\win32\include

工程库文件目录

D:\Users\PDF\libharu;

D:\Users\PDF\lpng\lib

工程使用库

libhpdf.lib libpng.lib zlib.lib