C++ (Cpp) HPDF_ExtGState_SetBlendMode Examples

Example #1

File: hpdf_extgstate.cpp Project: UNIVERSAL-IT-SYSTEMS/4d-plugin-haru

void PDF_ExtGState_SetBlendMode(sLONG_PTR *pResult, PackagePtr pParams)
{
	C_TEXT Param1;
	C_LONGINT Param2;
	C_LONGINT returnValue;
	
	Param1.fromParamAtIndex(pParams, 1);
	Param2.fromParamAtIndex(pParams, 2);
	
	HPDF_ExtGState ext_gstate = (HPDF_ExtGState)_fromHex(Param1);
	HPDF_BlendMode mode = (HPDF_BlendMode)Param2.getIntValue();
	
	returnValue.setIntValue(HPDF_ExtGState_SetBlendMode(ext_gstate, mode));
	
	returnValue.setReturn(pResult);
}

Example #2

File: ext_gstate_demo.c Project: AKKF/libharu

int
main (int argc, char **argv)
{
    HPDF_Doc  pdf;
    HPDF_Page page;
    char fname[256];
    HPDF_Font hfont;
    HPDF_ExtGState gstate;
    const HPDF_REAL PAGE_WIDTH = 600;
    const HPDF_REAL PAGE_HEIGHT = 900;

    strcpy (fname, argv[0]);
    strcat (fname, ".pdf");

    pdf = HPDF_New (error_handler, NULL);
    if (!pdf) {
        printf ("error: cannot create PdfDoc object\n");
        return 1;
    }

    if (setjmp(env)) {
        HPDF_Free (pdf);
        return 1;
    }

    hfont = HPDF_GetFont (pdf, "Helvetica-Bold", NULL);

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

    HPDF_Page_SetFontAndSize (page, hfont, 10);

    HPDF_Page_SetHeight (page, PAGE_HEIGHT);
    HPDF_Page_SetWidth (page, PAGE_WIDTH);

    /* normal */
    HPDF_Page_GSave (page);
    draw_circles (page, "normal", 40.0f, PAGE_HEIGHT - 170);
    HPDF_Page_GRestore (page);

    /* transparency (0.8) */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetAlphaFill (gstate, 0.8);
    HPDF_ExtGState_SetAlphaStroke (gstate, 0.8);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "alpha fill = 0.8", 230.0f, PAGE_HEIGHT - 170);
    HPDF_Page_GRestore (page);

    /* transparency (0.4) */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetAlphaFill (gstate, 0.4);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "alpha fill = 0.4", 420.0f, PAGE_HEIGHT - 170);
    HPDF_Page_GRestore (page);

    /* blend-mode=HPDF_BM_MULTIPLY */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_MULTIPLY);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "HPDF_BM_MULTIPLY", 40.0f, PAGE_HEIGHT - 340);
    HPDF_Page_GRestore (page);

    /* blend-mode=HPDF_BM_SCREEN */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_SCREEN);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "HPDF_BM_SCREEN", 230.0f, PAGE_HEIGHT - 340);
    HPDF_Page_GRestore (page);

    /* blend-mode=HPDF_BM_OVERLAY */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_OVERLAY);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "HPDF_BM_OVERLAY", 420.0f, PAGE_HEIGHT - 340);
    HPDF_Page_GRestore (page);

    /* blend-mode=HPDF_BM_DARKEN */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_DARKEN);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "HPDF_BM_DARKEN", 40.0f, PAGE_HEIGHT - 510);
    HPDF_Page_GRestore (page);

    /* blend-mode=HPDF_BM_LIGHTEN */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_LIGHTEN);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "HPDF_BM_LIGHTEN", 230.0f, PAGE_HEIGHT - 510);
    HPDF_Page_GRestore (page);

    /* blend-mode=HPDF_BM_COLOR_DODGE */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_COLOR_DODGE);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "HPDF_BM_COLOR_DODGE", 420.0f, PAGE_HEIGHT - 510);
    HPDF_Page_GRestore (page);


    /* blend-mode=HPDF_BM_COLOR_BUM */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_COLOR_BUM);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "HPDF_BM_COLOR_BUM", 40.0f, PAGE_HEIGHT - 680);
    HPDF_Page_GRestore (page);

    /* blend-mode=HPDF_BM_HARD_LIGHT */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_HARD_LIGHT);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "HPDF_BM_HARD_LIGHT", 230.0f, PAGE_HEIGHT - 680);
    HPDF_Page_GRestore (page);

    /* blend-mode=HPDF_BM_SOFT_LIGHT */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_SOFT_LIGHT);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "HPDF_BM_SOFT_LIGHT", 420.0f, PAGE_HEIGHT - 680);
    HPDF_Page_GRestore (page);

    /* blend-mode=HPDF_BM_DIFFERENCE */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_DIFFERENCE);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "HPDF_BM_DIFFERENCE", 40.0f, PAGE_HEIGHT - 850);
    HPDF_Page_GRestore (page);


    /* blend-mode=HPDF_BM_EXCLUSHON */
    HPDF_Page_GSave (page);
    gstate = HPDF_CreateExtGState (pdf);
    HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_EXCLUSHON);
    HPDF_Page_SetExtGState (page, gstate);
    draw_circles (page, "HPDF_BM_EXCLUSHON", 230.0f, PAGE_HEIGHT - 850);
    HPDF_Page_GRestore (page);


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

    /* clean up */
    HPDF_Free (pdf);

    return 0;
}