/* * << Haru Free PDF Library 2.0.0 >> -- image_demo.c * * Copyright (c) 1999-2006 Takeshi Kanno * * 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. * It is provided "as is" without express or implied warranty. * */ #include #include #include #include #include #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, 1); } void show_description (HPDF_Page page, float x, float y, const char *text) { char buf[255]; HPDF_Page_MoveTo (page, x, y - 10); HPDF_Page_LineTo (page, x, y + 10); HPDF_Page_MoveTo (page, x - 10, y); HPDF_Page_LineTo (page, x + 10, y); HPDF_Page_Stroke (page); HPDF_Page_SetFontAndSize (page, HPDF_Page_GetCurrentFont (page), 8); HPDF_Page_SetRGBFill (page, 0, 0, 0); HPDF_Page_BeginText (page); #ifdef __WIN32__ _snprintf(buf, 255, "(x=%d,y=%d)", (int)x, (int)y); #else snprintf(buf, 255, "(x=%d,y=%d)", (int)x, (int)y); #endif /* __WIN32__ */ HPDF_Page_MoveTextPos (page, x - HPDF_Page_TextWidth (page, buf) - 5, y - 10); HPDF_Page_ShowText (page, buf); HPDF_Page_EndText (page); HPDF_Page_BeginText (page); HPDF_Page_MoveTextPos (page, x - 20, y - 25); HPDF_Page_ShowText (page, text); HPDF_Page_EndText (page); } int main (int argc, char **argv) { HPDF_Doc pdf; HPDF_Font font; HPDF_Page page; char fname[256]; HPDF_Destination dst; HPDF_Image image; HPDF_Image image1; HPDF_Image image2; HPDF_Image image3; double x; double y; double angle; double angle1; double angle2; double rad; double rad1; double rad2; double iw; double ih; strcpy (fname, argv[0]); strcat (fname, ".pdf"); pdf = HPDF_New (error_handler, NULL); if (!pdf) { printf ("error: cannot create PdfDoc object\n"); return 1; } /* error-handler */ if (setjmp(env)) { HPDF_Free (pdf); return 1; } 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, 550); HPDF_Page_SetHeight (page, 500); dst = HPDF_Page_CreateDestination (page); HPDF_Destination_SetXYZ (dst, 0, HPDF_Page_GetHeight (page), 1); HPDF_SetOpenAction(pdf, dst); HPDF_Page_BeginText (page); HPDF_Page_SetFontAndSize (page, font, 20); HPDF_Page_MoveTextPos (page, 220, HPDF_Page_GetHeight (page) - 70); HPDF_Page_ShowText (page, "ImageDemo"); HPDF_Page_EndText (page); /* load image file. */ #ifndef __WIN32__ image = HPDF_LoadPngImageFromFile (pdf, "pngsuite/basn3p02.png"); #else image = HPDF_LoadPngImageFromFile (pdf, "pngsuite\\basn3p02.png"); #endif /* image1 is masked by image2. */ #ifndef __WIN32__ image1 = HPDF_LoadPngImageFromFile (pdf, "pngsuite/basn3p02.png"); #else image1 = HPDF_LoadPngImageFromFile (pdf, "pngsuite\\basn3p02.png"); #endif /* image2 is a mask image. */ #ifndef __WIN32__ image2 = HPDF_LoadPngImageFromFile (pdf, "pngsuite/basn0g01.png"); #else image2 = HPDF_LoadPngImageFromFile (pdf, "pngsuite\\basn0g01.png"); #endif /* image3 is a RGB-color image. we use this image for color-mask * demo. */ #ifndef __WIN32__ image3 = HPDF_LoadPngImageFromFile (pdf, "pngsuite/maskimage.png"); #else image3 = HPDF_LoadPngImageFromFile (pdf, "pngsuite\\maskimage.png"); #endif iw = HPDF_Image_GetWidth (image); ih = HPDF_Image_GetHeight (image); HPDF_Page_SetLineWidth (page, 0.5); x = 100; y = HPDF_Page_GetHeight (page) - 150; /* Draw image to the canvas. (normal-mode with actual size.)*/ HPDF_Page_DrawImage (page, image, x, y, iw, ih); show_description (page, x, y, "Actual Size"); x += 150; /* Scalling image (X direction) */ HPDF_Page_DrawImage (page, image, x, y, iw * 1.5, ih); show_description (page, x, y, "Scalling image (X direction)"); x += 150; /* Scalling image (Y direction). */ HPDF_Page_DrawImage (page, image, x, y, iw, ih * 1.5); show_description (page, x, y, "Scalling image (Y direction)"); x = 100; y -= 120; /* Skewing image. */ angle1 = 10; angle2 = 20; rad1 = angle1 / 180 * 3.141592; rad2 = angle2 / 180 * 3.141592; HPDF_Page_GSave (page); HPDF_Page_Concat (page, iw, tan(rad1) * iw, tan(rad2) * ih, ih, x, y); HPDF_Page_ExecuteXObject (page, image); HPDF_Page_GRestore (page); show_description (page, x, y, "Skewing image"); x += 150; /* Rotating image */ angle = 30; /* rotation of 30 degrees. */ rad = angle / 180 * 3.141592; /* Calcurate the radian value. */ HPDF_Page_GSave (page); HPDF_Page_Concat (page, iw * cos(rad), iw * sin(rad), ih * -sin(rad), ih * cos(rad), x, y); HPDF_Page_ExecuteXObject (page, image); HPDF_Page_GRestore (page); show_description (page, x, y, "Rotating image"); x += 150; /* draw masked image. */ /* Set image2 to the mask image of image1 */ HPDF_Image_SetMaskImage (image1, image2); HPDF_Page_SetRGBFill (page, 0, 0, 0); HPDF_Page_BeginText (page); HPDF_Page_MoveTextPos (page, x - 6, y + 14); HPDF_Page_ShowText (page, "MASKMASK"); HPDF_Page_EndText (page); HPDF_Page_DrawImage (page, image1, x - 3, y - 3, iw + 6, ih + 6); show_description (page, x, y, "masked image"); x = 100; y -= 120; /* color mask. */ HPDF_Page_SetRGBFill (page, 0, 0, 0); HPDF_Page_BeginText (page); HPDF_Page_MoveTextPos (page, x - 6, y + 14); HPDF_Page_ShowText (page, "MASKMASK"); HPDF_Page_EndText (page); HPDF_Image_SetColorMask (image3, 0, 255, 0, 0, 0, 255); HPDF_Page_DrawImage (page, image3, x, y, iw, ih); show_description (page, x, y, "Color Mask"); /* save the document to a file */ HPDF_SaveToFile (pdf, fname); /* clean up */ HPDF_Free (pdf); return 0; } #else int main() { printf("WARNING: if you want to run this demo, \n" "make libhpdf with HPDF_USE_PNGLIB option.\n"); return 0; } #endif /* HPDF_NOPNGLIB */