X-Git-Url: http://git.asbjorn.biz/?p=swftools.git;a=blobdiff_plain;f=lib%2Fdevices%2Fpdf.c;h=16bb6cf7cebf8b0499e13edf4d90d951e5c7349c;hp=720abd19e165719ea64cdf65af00d725c617cef4;hb=8589e0d1f5e47c05458033e750fd6182ca704fbe;hpb=580c48fef10df9184cf2728338e89f7db0fef2f5

diff --git a/lib/devices/pdf.c b/lib/devices/pdf.c
index 720abd1..16bb6cf 100644
--- a/lib/devices/pdf.c
+++ b/lib/devices/pdf.c
@@ -22,45 +22,148 @@
 #include <stdio.h>
 #include <stdarg.h>
 #include <unistd.h>
+#include <assert.h>
 #include <memory.h>
 #include <pdflib.h>
+#include <math.h>
+#include "../os.h"
+#include "../q.h"
+#include "../log.h"
+#include "../jpeg.h"
 #include "../types.h"
 #include "../mem.h"
+#include "../log.h"
 #include "../gfxdevice.h"
 #include "../gfxtools.h"
+#include "../gfximage.h"
+#include "../gfxfont.h"
 
 typedef struct _internal {
     PDF* p;
+    
+    char config_addblankpages;
+    double config_xpad;
+    double config_ypad;
+    int config_maxdpi;
+    int config_mindpi;
+
+    int width,height;
+    int num_pages;
+
     char*tempfile;
+    char*page_opts;
+    double lastx,lasty;
+    gfxfontlist_t*fontlist;
+
+    char has_matrix;
+    double m00, m01, m10, m11;
 } internal_t;
 
-int pdf_setparameter(gfxdevice_t*dev, const char*key, const char*value)
+static void restore_matrix(internal_t*i)
 {
-    internal_t*i = (internal_t*)dev->internal;
-    return 0;
+    if(i->has_matrix) {
+	PDF_restore(i->p);
+	i->has_matrix=0;
+    }
+}
+static void set_matrix(internal_t*i, double m00, double m01, double m10, double m11)
+{
+    restore_matrix(i);
+
+    i->m00 = m00;
+    i->m01 = m01;
+    i->m10 = m10;
+    i->m11 = m11;
+
+    PDF_save(i->p);
+    PDF_setmatrix(i->p, m00, -m01, m10, -m11, 0, i->height+2*i->config_ypad);
+    i->has_matrix = 1;
+}
+static void reset_matrix(internal_t*i)
+{
+    set_matrix(i, 1.0, 0.0, 0.0, 1.0);
+}
+static void transform_back(internal_t*i, double x, double y, double *ox, double *oy)
+{
+    double det = i->m00*i->m11 - i->m10*i->m01;
+    if(!det) {
+	msg("<warning> Codependent text matrix");
+	*ox=*oy=0;
+	return;
+    }
+    *ox = (x*i->m11 - i->m10*y)/det;
+    *oy = (i->m00*y - x*i->m01)/det;
 }
 
 void pdf_startpage(gfxdevice_t*dev, int width, int height)
 {
     internal_t*i = (internal_t*)dev->internal;
-   
-    i->tempfile = strdup("tmp.pdf");
-    PDF_open_file(i->p, i->tempfile);
-    PDF_set_parameter(i->p, "usercoordinates", "true");
-    PDF_set_parameter(i->p, "topdown", "true");
-    PDF_begin_page(i->p, width, height);
+
+    if(!i->tempfile) {
+	i->tempfile = strdup(mktempname(0, "pdf"));
+
+	PDF_begin_document(i->p, i->tempfile, 0, "");
+	//PDF_set_value(i->p, "compress", 0);
+	PDF_set_parameter(i->p, "usercoordinates", "true");
+	PDF_set_parameter(i->p, "topdown", "true");
+    }
+
+    int width_plus_pad = width+floor(i->config_xpad*2);
+    int height_plus_pad = height+floor(i->config_ypad*2);
+    PDF_begin_page_ext(i->p, width_plus_pad, height_plus_pad, i->page_opts);
+    PDF_set_value(i->p, "CropBox/llx", 0);
+    PDF_set_value(i->p, "CropBox/lly", 0);
+    PDF_set_value(i->p, "CropBox/urx", width_plus_pad);
+    PDF_set_value(i->p, "CropBox/ury", height_plus_pad);
+    if(i->config_xpad || i->config_ypad) {
+	PDF_set_value(i->p, "TrimBox/llx", i->config_xpad);
+	PDF_set_value(i->p, "TrimBox/lly", i->config_ypad);
+	PDF_set_value(i->p, "TrimBox/urx", i->config_xpad+width);
+	PDF_set_value(i->p, "TrimBox/ury", i->config_ypad+height);
+    }
+
     PDF_set_parameter(i->p, "fillrule", "evenodd");
+    i->width = width;
+    i->height = height;
+    i->num_pages++;
+
+    reset_matrix(i);
 }
 
-static int mkline(gfxline_t*line, PDF*p)
+int pdf_setparameter(gfxdevice_t*dev, const char*key, const char*value)
+{
+    internal_t*i = (internal_t*)dev->internal;
+    if(!strcmp(key, "addblankpages")) {
+	i->config_addblankpages = atoi(value);
+    } else if(!strcmp(key, "maxdpi")) {
+	i->config_maxdpi = atoi(value);
+    } else if(!strcmp(key, "mindpi")) {
+	i->config_mindpi = atoi(value);
+    } else if(!strcmp(key, "xpad")) {
+	i->config_xpad = atof(value);
+    } else if(!strcmp(key, "ypad")) {
+	i->config_ypad = atof(value);
+    }
+    return 0;
+}
+
+
+static int mkline(gfxline_t*line, PDF*p, double mx, double my, double scale, char fill)
 {
-    int ret = 0;
     double x=0,y=0;
+    char first = 1;
+    int ret = 0;
+    gfxline_t*free_line = 0;
+    if(fill) {
+	line = gfxline_restitch(gfxline_clone(line));
+	free_line = line;
+    }
     while(line) {
-	if(line->type == gfx_moveTo) {
-	    PDF_moveto(p, line->x, line->y);
+	if(line->type == gfx_moveTo && (x!=line->x || y!=line->y || first)) {
+	    first = 0;
+	    PDF_moveto(p, line->x*scale+mx, line->y*scale+my);
 	} else if(line->type == gfx_lineTo) {
-	    PDF_lineto(p, line->x, line->y);
+	    PDF_lineto(p, line->x*scale+mx, line->y*scale+my);
 	    ret = 1;
 	} else {
 	    /* when converting a quadratic bezier to a cubic bezier, the
@@ -70,52 +173,73 @@ static int mkline(gfxline_t*line, PDF*p)
 	    double c1y = (y + line->sy*2)/3;
 	    double c2x = (line->x + line->sx*2)/3;
 	    double c2y = (line->y + line->sy*2)/3;
-	    PDF_curveto(p, c1x, c1y, c2x, c2y, line->x, line->y);
+	    PDF_curveto(p, c1x*scale+mx, c1y*scale+my, 
+		           c2x*scale+mx, c2y*scale+my, 
+			   line->x*scale+mx, line->y*scale+my);
 	    ret = 1;
 	}
 	x = line->x;
 	y = line->y;
 	line = line->next;
     }
+    if(free_line)
+	gfxline_free(free_line);
     return ret;
 }
 
 void pdf_startclip(gfxdevice_t*dev, gfxline_t*line)
 {
     internal_t*i = (internal_t*)dev->internal;
+    
+    restore_matrix(i);
     PDF_save(i->p);
-    PDF_set_parameter(i->p, "fillrule", "evenodd");
-    if(mkline(line, i->p))
+    
+    if(mkline(line, i->p, i->config_xpad, i->config_ypad, 1.0, 1))
 	PDF_clip(i->p);
     else   
-	; // TODO: not sure about this
-
+	; // TODO: strictly speaking, an empty clip clears everything
+    
+    reset_matrix(i);
 }
 void pdf_endclip(gfxdevice_t*dev)
 {
     internal_t*i = (internal_t*)dev->internal;
+    restore_matrix(i);
     PDF_restore(i->p);
 }
 void pdf_stroke(gfxdevice_t*dev, gfxline_t*line, gfxcoord_t width, gfxcolor_t*color, gfx_capType cap_style, gfx_joinType joint_style, gfxcoord_t miterLimit)
 {
     internal_t*i = (internal_t*)dev->internal;
+    if(width<1e-6)
+	return;
+    reset_matrix(i);
     PDF_setlinewidth(i->p, width);
     PDF_setlinecap(i->p, cap_style==gfx_capButt?0:(cap_style==gfx_capRound?1:2));
     PDF_setlinejoin(i->p, joint_style==gfx_joinMiter?0:(joint_style==gfx_joinRound?1:2));
+    
     PDF_setrgbcolor_stroke(i->p, color->r/255.0, color->g/255.0, color->b/255.0);
+
     if(joint_style==gfx_joinMiter)
 	PDF_setmiterlimit(i->p, miterLimit);
-    if(mkline(line, i->p))
+    if(mkline(line, i->p, i->config_xpad, i->config_ypad, 1.0, 0))
 	PDF_stroke(i->p);
 }
 
 void pdf_fill(gfxdevice_t*dev, gfxline_t*line, gfxcolor_t*color)
 {
     internal_t*i = (internal_t*)dev->internal;
+    reset_matrix(i);
     PDF_setrgbcolor_fill(i->p, color->r/255.0, color->g/255.0, color->b/255.0);
-    PDF_set_parameter(i->p, "fillrule", "evenodd");
+    /*
+       pdf-x (pdf 1.3) doesn't support opacityfill
+    if(color->a!=255) {
+	char opacityfill[80];
+	sprintf(opacityfill, "opacityfill %f", color->a/256.0);
+	int gstate = PDF_create_gstate(i->p, opacityfill);
+	PDF_set_gstate(i->p, gstate);
+    }*/
 	
-    if(mkline(line, i->p)) {
+    if(mkline(line, i->p, i->config_xpad, i->config_ypad, 1.0, 1)) {
 	PDF_fill(i->p);
     }
 }
@@ -124,8 +248,86 @@ void pdf_fillbitmap(gfxdevice_t*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t
 {
     internal_t*i = (internal_t*)dev->internal;
 
-    //PDFLIB_API int PDFLIB_CALL
-    //PDF_load_image(i->pPDF *p, const char *imagetype, const char *filename, int len, const char *optlist);
+    int t,size=img->width*img->height;
+    int has_alpha=0;
+    for(t=0;t<size;t++) {
+	if(img->data[t].a!=255) {
+	    has_alpha=1;
+	    break;
+	}
+    }
+
+    double w = sqrt(matrix->m00*matrix->m00+matrix->m01*matrix->m01);
+    double h = sqrt(matrix->m10*matrix->m10+matrix->m11*matrix->m11);
+    double l1 = w*img->width;
+    double l2 = h*img->height;
+
+    double dpi_x = 72.0 / w;
+    double dpi_y = 72.0 / h;
+    double dpi = dpi_x>dpi_y?dpi_x:dpi_y;
+    gfximage_t*rescaled_image = 0;
+    if(i->config_maxdpi && dpi > i->config_maxdpi) {
+	int newwidth = img->width*i->config_maxdpi/dpi;
+	int newheight = img->height*i->config_maxdpi/dpi;
+	rescaled_image = gfximage_rescale(img, newwidth, newheight);
+	msg("<notice> Downscaling %dx%d image (dpi %f, %.0fx%.0f on page) to %dx%d (dpi %d)", 
+		img->width, img->height, dpi, l1, l2, newwidth, newheight, i->config_maxdpi);
+	img = rescaled_image;
+    }
+    if(i->config_mindpi && dpi < i->config_mindpi && img->width>1 && img->height>1) {
+	msg("<error> Found image of size %dx%d with dpi %f, minimum allowed dpi is %d", 
+		img->width, img->height, dpi, i->config_mindpi);
+	exit(1);
+    }
+
+    char tempfile[128];
+    mktempname(tempfile, "jpg");
+
+    gfximage_save_jpeg(img, tempfile, 96);
+
+    int imgid=-1;
+    if(has_alpha) {
+	char tempfile2[128];
+	mktempname(tempfile2, "jpg");
+	int t;
+	int size = img->width*img->height;
+	unsigned char*alpha = malloc(size);
+	for(t=0;t<size;t++) {
+	    alpha[t] = img->data[t].a;
+	}
+	jpeg_save_gray(alpha, img->width, img->height, 97, tempfile2);
+	free(alpha);
+	int maskid = PDF_load_image(i->p, "jpeg", tempfile2, 0, "mask");
+	unlink(tempfile2);
+	char masked[80];
+	if(maskid<0) {
+	    msg("<error> Couldn't process mask jpeg of size %dx%d: error code %d", img->width, img->height, maskid);
+	    return;
+	}
+	sprintf(masked, "masked %d", maskid);
+	imgid = PDF_load_image(i->p, "jpeg", tempfile, 0, masked);
+    } else {
+	imgid = PDF_load_image(i->p, "jpeg", tempfile, 0, "");
+    }
+
+    if(imgid<0) {
+	msg("<error> Couldn't process jpeg of size %dx%d: error code %d, file %s", img->width, img->height, imgid, tempfile);
+	return;
+    }
+    unlink(tempfile);
+    
+    char options[80];
+    set_matrix(i, matrix->m00, matrix->m01, matrix->m10, matrix->m11);
+    /* an image's (0,0) is at the lower left corner */
+    double x=matrix->tx + i->config_xpad + matrix->m10*img->height;
+    double y=matrix->ty + i->config_ypad + matrix->m11*img->height;
+    double tx,ty;
+    transform_back(i, x, y, &tx, &ty);
+    PDF_place_image(i->p, imgid, tx, ty, 1.0);
+    PDF_close_image(i->p, imgid);
+
+    if(rescaled_image)
+	gfximage_free(rescaled_image);
 }
 
 void pdf_fillgradient(gfxdevice_t*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*matrix)
@@ -133,31 +335,149 @@ void pdf_fillgradient(gfxdevice_t*dev, gfxline_t*line, gfxgradient_t*gradient, g
     internal_t*i = (internal_t*)dev->internal;
 }
 
+static const char type3 = 0;
+static const char ttf = 1;
+
 void pdf_addfont(gfxdevice_t*dev, gfxfont_t*font)
 {
     internal_t*i = (internal_t*)dev->internal;
+
+    int num = font->num_glyphs<256-32?font->num_glyphs:256-32;
+    if(type3) {
+	int fontid = 0;
+	if(!gfxfontlist_hasfont(i->fontlist, font)) {
+
+	    static int fontnr = 1;
+	    char fontname[32];
+	    sprintf(fontname, "font%d", fontnr++);
+	    int l = strlen(fontname);
+	    char fontname2[64];
+	    int t;
+	    for(t=0;t<l+1;t++) {
+		fontname2[t*2+0] = fontname[t];
+		fontname2[t*2+1] = 0;
+	    }
+
+	    PDF_begin_font(i->p, fontname2, l*2, 1.0, 0.0, 0.0, -1.0, 0.0, 0.0, "");
+	    for(t=0;t<num;t++) {
+		gfxglyph_t*g = &font->glyphs[t];
+		gfxbbox_t bbox = gfxline_getbbox(g->line);
+		char name[32];
+		sprintf(name, "chr%d", t+32);
+		PDF_encoding_set_char(i->p, fontname, t+32, name, 0);
+		PDF_begin_glyph(i->p, name, g->advance, bbox.xmin/64.0, bbox.ymin/64.0, bbox.xmax/64.0, bbox.ymax/64.0);
+		if(mkline(g->line, i->p, 0, 0, 1.0/64.0, 1))
+		    PDF_fill(i->p);
+		PDF_end_glyph(i->p);
+	    }
+	    PDF_end_font(i->p);
+	    fontid = PDF_load_font(i->p, fontname2, l*2, fontname, "");
+	    
+	    i->fontlist = gfxfontlist_addfont2(i->fontlist, font, (void*)(ptroff_t)fontid);
+	}
+    } else if(ttf) {
+	int fontid = 0;
+	if(!gfxfontlist_hasfont(i->fontlist, font)) {
+	    char fontname[32],filename[32],fontname2[64];
+	    static int fontnr = 1;
+	    sprintf(fontname, "font%d", fontnr);
+	    sprintf(filename, "font%d.ttf", fontnr);
+	    fontnr++;
+	    const char*old_id = font->id;
+	    font->id = fontname;
+	    int t;
+	    for(t=0;t<num;t++) {
+		font->glyphs[t].unicode = 32+t;
+	    }
+	    font->max_unicode = 0;
+	    font->unicode2glyph = 0;
+	    gfxfont_save(font, filename);
+	    font->id=old_id;
+	    
+#ifdef RUN_TTX
+	    /* for testing the generated fonts: run everything through ttx (fonttools) */
+	    char cmd[256];
+	    sprintf(cmd, "mv %s.ttf test.ttf", fontname);system(cmd);
+	    system("rm -f test.ttx");
+	    if(system("ttx test.ttf")&0xff00) exit(1);
+	    sprintf(cmd, "mv test.ttf %s.old.ttf", fontname, fontname);system(cmd);
+	    sprintf(cmd, "ttx test.ttx;mv test.ttf %s.ttf", fontname);system(cmd);
+	    sprintf(cmd, "rm -f test.ttx");system(cmd);
+#endif
+	   
+	    int l = strlen(fontname);
+	    for(t=0;t<l+1;t++) {
+		fontname2[t*2+0] = fontname[t];
+		fontname2[t*2+1] = 0;
+	    }
+	    
+	    fontid = PDF_load_font(i->p, fontname2, l*2, "host", "embedding=true");
+	    i->fontlist = gfxfontlist_addfont2(i->fontlist, font, (void*)(ptroff_t)fontid);
+	    unlink(filename);
+	}
+    }
 }
 
 void pdf_drawchar(gfxdevice_t*dev, gfxfont_t*font, int glyphnr, gfxcolor_t*color, gfxmatrix_t*matrix)
 {
     internal_t*i = (internal_t*)dev->internal;
+
     if(!font)
 	return;
-    /* align characters to whole pixels */
-    matrix->tx = (int)matrix->tx;
-    matrix->ty = (int)matrix->ty;
 
     gfxglyph_t*glyph = &font->glyphs[glyphnr];
-    gfxline_t*line2 = gfxline_clone(glyph->line);
-    gfxline_transform(line2, matrix);
-    PDF_setrgbcolor_fill(i->p, color->r/255.0, color->g/255.0, color->b/255.0);
-    PDF_set_parameter(i->p, "fillrule", "evenodd");
-    
-    if(mkline(line2, i->p)) {
-	PDF_fill(i->p);
+    char as_shape = 0;
+    if(!type3 && !ttf) {msg("<warning> No type3 enabled. Drawing char %d as shape", glyphnr);as_shape=1;}
+    if(glyphnr>256-32) {msg("<warning> Drawing char %d as shape (not < 224)", glyphnr);as_shape=1;}
+	
+    if(as_shape) {
+	reset_matrix(i);
+	PDF_setrgbcolor_fill(i->p, color->r/255.0, color->g/255.0, color->b/255.0);
+	gfxline_t*line2 = gfxline_clone(glyph->line);
+	gfxline_transform(line2, matrix);
+	if(mkline(line2, i->p, i->config_xpad, i->config_ypad, 1.0, 1)) {
+	    PDF_fill(i->p);
+	}
+	gfxline_free(line2);
+    } else {
+	assert(gfxfontlist_hasfont(i->fontlist, font));
+	int fontid = (int)(ptroff_t)gfxfontlist_getuserdata(i->fontlist, font->id);
+
+	gfxmatrix_t m = *matrix;
+
+	m.m00*=64;
+	m.m01*=64;
+	m.m10*=64;
+	m.m11*=64;
+	if(ttf) {
+	    m.m10 = -m.m10;
+	    m.m11 = -m.m11;
+	}
+
+	if(!(fabs(m.m00 - i->m00) < 1e-6 &&
+	     fabs(m.m01 - i->m01) < 1e-6 &&
+	     fabs(m.m10 - i->m10) < 1e-6 &&
+	     fabs(m.m11 - i->m11) < 1e-6)) {
+	    set_matrix(i, m.m00, m.m01, m.m10, m.m11);
+	}
+	double tx, ty;
+	transform_back(i, m.tx+i->config_xpad, m.ty+i->config_ypad, &tx, &ty);
+	
+	PDF_setfont(i->p, fontid, ttf?16.0:1.0);
+	PDF_setrgbcolor_fill(i->p, color->r/255.0, color->g/255.0, color->b/255.0);
+
+	char name[32];
+	sprintf(name, "%c", glyphnr+32);
+
+	if(fabs(tx - i->lastx) > 0.001 || ty != i->lasty) {
+	    PDF_show_xy2(i->p, name, strlen(name), tx, ty);
+	} else {
+	    PDF_show2(i->p, name, strlen(name));
+	}
+
+	i->lastx = tx + glyph->advance;
+	i->lasty = ty;
     }
-    gfxline_free(line2);
-    return;
 }
 
 void pdf_drawlink(gfxdevice_t*dev, gfxline_t*line, const char*action)
@@ -168,9 +488,8 @@ void pdf_drawlink(gfxdevice_t*dev, gfxline_t*line, const char*action)
 void pdf_endpage(gfxdevice_t*dev)
 {
     internal_t*i = (internal_t*)dev->internal;
+    restore_matrix(i);
     PDF_end_page(i->p);
-    PDF_close(i->p);
-    PDF_delete(i->p);
 }
 
 typedef struct pdfresult_internal {
@@ -180,6 +499,7 @@ typedef struct pdfresult_internal {
 void pdfresult_destroy(gfxresult_t*gfx)
 {
     pdfresult_internal_t*i = (pdfresult_internal_t*)gfx->internal;
+    unlink(i->tempfile);
     free(i->tempfile);
     free(gfx->internal);gfx->internal = 0;
     free(gfx);
@@ -213,6 +533,22 @@ gfxresult_t* pdf_finish(gfxdevice_t*dev)
 {
     internal_t*i = (internal_t*)dev->internal;
 
+    if(i->config_addblankpages) {
+	int mod = i->num_pages%i->config_addblankpages;
+	if(mod) {
+	    int count = i->config_addblankpages - mod;
+	    int t;
+	    for(t=0;t<count;t++) {
+		dev->startpage(dev, i->width, i->height);
+		dev->endpage(dev);
+	    }
+	}
+    }
+   
+    PDF_end_document(i->p, "");
+    //PDF_close(i->p);
+    PDF_delete(i->p);
+
     gfxresult_t*result = (gfxresult_t*)malloc(sizeof(gfxresult_t));
     memset(result, 0, sizeof(gfxresult_t));
     result->save = pdfresult_save;
@@ -249,6 +585,9 @@ void gfxdevice_pdf_init(gfxdevice_t*dev)
     dev->endpage = pdf_endpage;
     dev->finish = pdf_finish;
 
+    i->page_opts = "";
+    i->lastx = -1e38;
+    i->lasty = -1e38;
+    i->has_matrix = 0;
     i->p = PDF_new();
 }
-