#include <stdlib.h>
#include <stdio.h>
+#include <stdarg.h>
#include <unistd.h>
#include <memory.h>
#include "../mem.h"
typedef struct _internal {
gfxdevice_t*out;
clip_t*clip;
+ ArtSVP*svpunion;
} internal_t;
+static int verbose = 0;
+static void dbg(char*format, ...)
+{
+ if(!verbose)
+ return;
+ char buf[1024];
+ int l;
+ va_list arglist;
+ va_start(arglist, format);
+ vsprintf(buf, format, arglist);
+ va_end(arglist);
+ l = strlen(buf);
+ while(l && buf[l-1]=='\n') {
+ buf[l-1] = 0;
+ l--;
+ }
+ printf("(device-arts) %s\n", buf);
+ fflush(stdout);
+}
+
int arts_setparameter(struct _gfxdevice*dev, const char*key, const char*value)
{
+ dbg("arts_setparameter");
internal_t*i = (internal_t*)dev->internal;
- return i->out->setparameter(i->out,key,value);
+ if(i->out) return i->out->setparameter(i->out,key,value);
+ else return 0;
}
void arts_startpage(struct _gfxdevice*dev, int width, int height)
{
+ dbg("arts_startpage");
internal_t*i = (internal_t*)dev->internal;
- i->out->startpage(i->out,width,height);
+ if(i->out) i->out->startpage(i->out,width,height);
}
void arts_startclip(struct _gfxdevice*dev, gfxline_t*line)
{
+ dbg("arts_startclip");
internal_t*i = (internal_t*)dev->internal;
ArtSVP* svp = gfxfillToSVP(line, 1);
i->clip->svp = art_svp_intersect(svp, old);
art_svp_free(svp);
} else {
- i->clip = rfx_calloc(sizeof(clip_t));
+ i->clip = (clip_t*)rfx_calloc(sizeof(clip_t));
i->clip->svp = svp;
}
}
void arts_endclip(struct _gfxdevice*dev)
{
+ dbg("arts_endclip");
internal_t*i = (internal_t*)dev->internal;
if(i->clip) {
}
}
+void addtounion(struct _gfxdevice*dev, ArtSVP*svp)
+{
+ internal_t*i = (internal_t*)dev->internal;
+ if(i->svpunion) {
+ ArtSVP*old = i->svpunion;
+ i->svpunion = art_svp_union(svp,i->svpunion);
+ art_svp_free(old);
+ }
+}
+
void arts_stroke(struct _gfxdevice*dev, gfxline_t*line, gfxcoord_t width, gfxcolor_t*color, gfx_capType cap_style, gfx_joinType joint_style, gfxcoord_t miterLimit)
{
+ dbg("arts_stroke");
internal_t*i = (internal_t*)dev->internal;
//i->out->stroke(i->out, line, width, color, cap_style, joint_style, miterLimit);
ArtSVP* svp = gfxstrokeToSVP(line, width, cap_style, joint_style, miterLimit);
svp = art_svp_intersect(svp, i->clip->svp);
art_svp_free(old);
}
+ addtounion(dev,svp);
gfxline_t*gfxline = SVPtogfxline(svp);
- i->out->fill(i->out, gfxline, color);
+ if(i->out) i->out->fill(i->out, gfxline, color);
free(gfxline);
art_svp_free(svp);
}
void arts_fill(struct _gfxdevice*dev, gfxline_t*line, gfxcolor_t*color)
{
+ dbg("arts_fill");
internal_t*i = (internal_t*)dev->internal;
ArtSVP* svp = gfxfillToSVP(line, 1);
+ if (svp->n_segs > 500)
+ {
+ int lineParts = 0;
+ gfxline_t* lineCursor = line;
+ while(lineCursor != NULL)
+ {
+ if(lineCursor->type != gfx_moveTo) ++lineParts;
+ lineCursor = lineCursor->next;
+ }
+ fprintf(stderr, "arts_fill abandonning shape with %d segments (%d line parts)\n", svp->n_segs, lineParts);
+ art_svp_free(svp);
+ return;
+ }
+
svp = art_svp_rewind_uncrossed(art_svp_uncross(svp),ART_WIND_RULE_ODDEVEN); /*FIXME*/
if(i->clip) {
svp = art_svp_intersect(svp, i->clip->svp);
art_svp_free(old);
}
+ addtounion(dev,svp);
gfxline_t*gfxline = SVPtogfxline(svp);
- i->out->fill(i->out, gfxline, color);
+ if(i->out) i->out->fill(i->out, gfxline, color);
free(gfxline);
art_svp_free(svp);
}
void arts_fillbitmap(struct _gfxdevice*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t*matrix, gfxcxform_t*cxform)
{
+ dbg("arts_fillbitmap");
internal_t*i = (internal_t*)dev->internal;
ArtSVP* svp = gfxfillToSVP(line, 1);
+
+ // We need to make sure that the SVP we now have bounds an area (i.e. the
+ // source line wound anticlockwise) rather than excludes an area (i.e. the
+ // line wound clockwise). It seems that PDF (or xpdf) is less strict about
+ // this for bitmaps than it is for fill areas.
+ //
+ // To check this, we'll sum the cross products of all pairs of adjacent
+ // lines. If the result is positive, the direction is correct; if not, we
+ // need to reverse the sense of the SVP generated. The easiest way to do
+ // this is to flip the up/down flags of all the segments.
+ //
+ // This is approximate; since the gfxline_t structure can contain any
+ // combination of moveTo, lineTo and splineTo in any order, not all pairs
+ // of lines in the shape that share a point need be described next to each
+ // other in the sequence. For ease, we'll consider only pairs of lines
+ // stored as lineTos and splineTos without intervening moveTos.
+ //
+ // TODO is this a valid algorithm? My vector maths is rusty.
+ //
+ // It may be more correct to instead reverse the line before we feed it
+ // into gfxfilltoSVP. However, this seems equivalent and is easier to
+ // implement!
+ double total_cross_product = 0.0;
+ gfxline_t* cursor = line;
+ if (cursor != NULL)
+ {
+ double x_last = cursor->x;
+ double y_last = cursor->y;
+ cursor = cursor->next;
+
+ while((cursor != NULL) && (cursor->next != NULL))
+ {
+ if (((cursor->type == gfx_lineTo) || (cursor->type == gfx_splineTo))
+ && ((cursor->next->type == gfx_lineTo) || (cursor->next->type == gfx_splineTo)))
+ {
+ // Process these lines
+ //
+ // In this space (x right, y down) the cross-product is
+ // (x1 * y0) - (x0 * y1)
+ double x0 = cursor->x - x_last;
+ double y0 = cursor->y - y_last;
+ double x1 = cursor->next->x - cursor->x;
+ double y1 = cursor->next->y - cursor->y;
+ total_cross_product += (x1 * y0) - (x0 * y1);
+ }
+
+ x_last = cursor->x;
+ y_last = cursor->y;
+ cursor = cursor->next;
+ }
+ }
+ if (total_cross_product < 0.0)
+ {
+ int i = 0;
+ for(; i < svp->n_segs; ++i)
+ {
+ if (svp->segs[i].dir != 0)
+ svp->segs[i].dir = 0;
+ else
+ svp->segs[i].dir = 1;
+ }
+ }
+
if(i->clip) {
ArtSVP*old = svp;
svp = art_svp_intersect(svp, i->clip->svp);
art_svp_free(old);
}
+ addtounion(dev,svp);
gfxline_t*gfxline = SVPtogfxline(svp);
- i->out->fillbitmap(i->out, gfxline, img, matrix, cxform);
+ if(i->out) i->out->fillbitmap(i->out, gfxline, img, matrix, cxform);
free(gfxline);
art_svp_free(svp);
}
void arts_fillgradient(struct _gfxdevice*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*matrix)
{
+ dbg("arts_fillgradient");
internal_t*i = (internal_t*)dev->internal;
ArtSVP* svp = gfxfillToSVP(line, 1);
if(i->clip) {
svp = art_svp_intersect(svp, i->clip->svp);
art_svp_free(old);
}
+ addtounion(dev,svp);
gfxline_t*gfxline = SVPtogfxline(svp);
- i->out->fillgradient(i->out, gfxline, gradient, type, matrix);
+ if(i->out) i->out->fillgradient(i->out, gfxline, gradient, type, matrix);
free(gfxline);
art_svp_free(svp);
}
void arts_addfont(struct _gfxdevice*dev, gfxfont_t*font)
{
+ dbg("arts_addfont");
internal_t*i = (internal_t*)dev->internal;
- i->out->addfont(i->out, font);
+ if(i->out) i->out->addfont(i->out, font);
}
void arts_drawchar(struct _gfxdevice*dev, gfxfont_t*font, int glyphnr, gfxcolor_t*color, gfxmatrix_t*matrix)
{
+ dbg("arts_drawchar");
internal_t*i = (internal_t*)dev->internal;
gfxline_t*glyph = gfxline_clone(font->glyphs[glyphnr].line);
gfxline_transform(glyph, matrix);
gfxbbox_t bbox2 = gfxline_getbbox(gfxline);
double w = bbox2.xmax - bbox2.xmin;
double h = bbox2.ymax - bbox2.ymin;
+
+ addtounion(dev, svp); // TODO: use the whole char, not just the bbox
+
if(w < 0.001 || h < 0.001) /* character was clipped completely */ {
} else if(fabs((bbox.xmax - bbox.xmin) - w) > 0.05 ||
fabs((bbox.ymax - bbox.ymin) - h) > 0.05) {
*/
arts_fill(dev, glyph, color);
} else {
- i->out->drawchar(i->out, font, glyphnr, color, matrix);
+ if(i->out) i->out->drawchar(i->out, font, glyphnr, color, matrix);
}
} else {
- i->out->drawchar(i->out, font, glyphnr, color, matrix);
+ if(i->out) i->out->drawchar(i->out, font, glyphnr, color, matrix);
}
gfxline_free(glyph);
void arts_drawlink(struct _gfxdevice*dev, gfxline_t*line, char*action)
{
+ dbg("arts_drawlink");
internal_t*i = (internal_t*)dev->internal;
- i->out->drawlink(i->out, line, action);
+ if(i->out) i->out->drawlink(i->out, line, action);
}
void arts_endpage(struct _gfxdevice*dev)
{
+ dbg("arts_endpage");
internal_t*i = (internal_t*)dev->internal;
- i->out->endpage(i->out);
+ if(i->out) i->out->endpage(i->out);
}
gfxresult_t* arts_finish(struct _gfxdevice*dev)
{
+ dbg("arts_finish");
internal_t*i = (internal_t*)dev->internal;
- return i->out->finish(i->out);
+ if(i->out) {
+ return i->out->finish(i->out);
+ } else {
+ return 0;
+ }
}
-void gfxdevice_arts_init(gfxdevice_t*dev, gfxdevice_t*out)
+gfxline_t*gfxdevice_union_getunion(struct _gfxdevice*dev)
{
- internal_t*i = rfx_calloc(sizeof(internal_t));
+ internal_t*i = (internal_t*)dev->internal;
+ return SVPtogfxline(i->svpunion);
+}
+
+void gfxdevice_removeclippings_init(gfxdevice_t*dev, gfxdevice_t*out)
+{
+ dbg("gfxdevice_removeclippings_init");
+ internal_t*i = (internal_t*)rfx_calloc(sizeof(internal_t));
memset(dev, 0, sizeof(gfxdevice_t));
+
+ dev->name = "removeclippings";
+
+ dev->internal = i;
+
+ dev->setparameter = arts_setparameter;
+ dev->startpage = arts_startpage;
+ dev->startclip = arts_startclip;
+ dev->endclip = arts_endclip;
+ dev->stroke = arts_stroke;
+ dev->fill = arts_fill;
+ dev->fillbitmap = arts_fillbitmap;
+ dev->fillgradient = arts_fillgradient;
+ dev->addfont = arts_addfont;
+ dev->drawchar = arts_drawchar;
+ dev->drawlink = arts_drawlink;
+ dev->endpage = arts_endpage;
+ dev->finish = arts_finish;
+
+ i->out = out;
+ i->svpunion = 0;
+}
+
+void gfxdevice_union_init(gfxdevice_t*dev,gfxdevice_t*out)
+{
+ dbg("gfxdevice_getunion_init");
+ internal_t*i = (internal_t*)rfx_calloc(sizeof(internal_t));
+ memset(dev, 0, sizeof(gfxdevice_t));
+
+ dev->name = "union";
+
dev->internal = i;
dev->setparameter = arts_setparameter;
dev->finish = arts_finish;
i->out = out;
+ i->svpunion = gfxstrokeToSVP(0, 0, 0, 0, 0);
}
git.asbjorn.biz / swftools.git / blobdiff