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![Klemens Friedl](/assets/img/avatar_default.png)
* sumatrapdf - vendor import * everything compiles (libjpeg, poppler, fitz, sumatrapdf) * does NOT link (remove the comment tags in the parent directory.rbuild file (rosapps dir) to build it) svn path=/trunk/; revision=29295
886 lines
18 KiB
C
886 lines
18 KiB
C
#include "fitz-base.h"
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#include "fitz-world.h"
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#include "fitz-draw.h"
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#ifdef _WIN32
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#undef noDEBUG
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#undef DEBUG
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#define DEBUG(...)
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#define noDEBUG(...)
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#else
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#define noDEBUG(args...) printf(args)
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#ifndef DEBUG
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#define DEBUG(args...)
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#endif
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#endif
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#define QUANT(x,a) (((int)((x) * (a))) / (a))
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#define HSUBPIX 5.0
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#define VSUBPIX 5.0
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#define FNONE 0
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#define FOVER 1
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#define FRGB 4
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static fz_error *rendernode(fz_renderer *gc, fz_node *node, fz_matrix ctm);
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fz_error *
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fz_newrenderer(fz_renderer **gcp, fz_colorspace *pcm, int maskonly, int gcmem)
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{
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fz_error *error;
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fz_renderer *gc;
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gc = fz_malloc(sizeof(fz_renderer));
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if (!gc)
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return fz_outofmem;
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gc->maskonly = maskonly;
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gc->model = pcm;
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gc->cache = nil;
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gc->gel = nil;
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gc->ael = nil;
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error = fz_newglyphcache(&gc->cache, gcmem / 24, gcmem);
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if (error)
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goto cleanup;
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error = fz_newgel(&gc->gel);
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if (error)
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goto cleanup;
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error = fz_newael(&gc->ael);
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if (error)
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goto cleanup;
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gc->dest = nil;
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gc->over = nil;
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gc->rgb[0] = 0;
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gc->rgb[1] = 0;
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gc->rgb[2] = 0;
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gc->flag = 0;
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*gcp = gc;
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return nil;
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cleanup:
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if (gc->model) fz_dropcolorspace(gc->model);
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if (gc->cache) fz_dropglyphcache(gc->cache);
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if (gc->gel) fz_dropgel(gc->gel);
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if (gc->ael) fz_dropael(gc->ael);
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fz_free(gc);
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return error;
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}
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void
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fz_droprenderer(fz_renderer *gc)
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{
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if (gc->dest) fz_droppixmap(gc->dest);
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if (gc->over) fz_droppixmap(gc->over);
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if (gc->model) fz_dropcolorspace(gc->model);
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if (gc->cache) fz_dropglyphcache(gc->cache);
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if (gc->gel) fz_dropgel(gc->gel);
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if (gc->ael) fz_dropael(gc->ael);
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fz_free(gc);
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}
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/*
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* Transform
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*/
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static fz_error *
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rendertransform(fz_renderer *gc, fz_transformnode *transform, fz_matrix ctm)
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{
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fz_error *error;
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DEBUG("transform [%g %g %g %g %g %g]\n",
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transform->m.a, transform->m.b,
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transform->m.c, transform->m.d,
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transform->m.e, transform->m.f);
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DEBUG("{\n");
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ctm = fz_concat(transform->m, ctm);
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error = rendernode(gc, transform->super.first, ctm);
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DEBUG("}\n");
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return error;
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}
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/*
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* Color
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*/
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static fz_error *
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rendersolid(fz_renderer *gc, fz_solidnode *solid, fz_matrix ctm)
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{
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fz_error *error;
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float rgb[3];
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unsigned char *p;
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int n;
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if (gc->maskonly)
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return fz_throw("assert: mask only renderer");
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if (gc->model->n != 3)
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return fz_throw("assert: non-rgb renderer");
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fz_convertcolor(solid->cs, solid->samples, gc->model, rgb);
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gc->rgb[0] = rgb[0] * 255;
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gc->rgb[1] = rgb[1] * 255;
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gc->rgb[2] = rgb[2] * 255;
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DEBUG("solid %s [%d %d %d];\n", solid->cs->name, gc->rgb[0], gc->rgb[1], gc->rgb[2]);
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if (gc->flag == FOVER)
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{
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p = gc->over->samples;
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n = gc->over->w * gc->over->h;
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}
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else
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{
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error = fz_newpixmapwithrect(&gc->dest, gc->clip, 4);
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if (error)
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return error;
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p = gc->dest->samples;
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n = gc->dest->w * gc->dest->h;
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}
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while (n--)
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{
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p[0] = 255;
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p[1] = gc->rgb[0];
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p[2] = gc->rgb[1];
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p[3] = gc->rgb[2];
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p += 4;
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}
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return nil;
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}
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/*
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* Path
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*/
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enum { HS = 17, VS = 15, SF = 1 };
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static fz_error *
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renderpath(fz_renderer *gc, fz_pathnode *path, fz_matrix ctm)
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{
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fz_error *error;
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float flatness;
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fz_irect gbox;
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fz_irect clip;
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flatness = 0.3 / fz_matrixexpansion(ctm);
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if (flatness < 0.1)
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flatness = 0.1f;
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fz_resetgel(gc->gel, HS, VS);
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if (path->paint == FZ_STROKE)
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{
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if (path->dash)
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error = fz_dashpath(gc->gel, path, ctm, flatness);
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else
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error = fz_strokepath(gc->gel, path, ctm, flatness);
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}
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else
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error = fz_fillpath(gc->gel, path, ctm, flatness);
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if (error)
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return error;
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fz_sortgel(gc->gel);
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gbox = fz_boundgel(gc->gel);
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clip = fz_intersectirects(gc->clip, gbox);
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if (fz_isemptyrect(clip))
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return nil;
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DEBUG("path %s;\n", path->paint == FZ_STROKE ? "stroke" : "fill");
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if (gc->flag & FRGB)
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{
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return fz_scanconvert(gc->gel, gc->ael, path->paint == FZ_EOFILL,
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clip, gc->over, gc->rgb, 1);
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}
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else if (gc->flag & FOVER)
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{
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return fz_scanconvert(gc->gel, gc->ael, path->paint == FZ_EOFILL,
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clip, gc->over, nil, 1);
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}
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else
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{
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error = fz_newpixmapwithrect(&gc->dest, clip, 1);
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if (error)
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return error;
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fz_clearpixmap(gc->dest);
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return fz_scanconvert(gc->gel, gc->ael, path->paint == FZ_EOFILL,
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clip, gc->dest, nil, 0);
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}
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}
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/*
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* Text
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*/
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static void drawglyph(fz_renderer *gc, fz_pixmap *dst, fz_glyph *src, int xorig, int yorig)
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{
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unsigned char *dp, *sp;
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int w, h;
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int dx0 = dst->x;
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int dy0 = dst->y;
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int dx1 = dst->x + dst->w;
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int dy1 = dst->y + dst->h;
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int x0 = xorig + src->x;
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int y0 = yorig + src->y;
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int x1 = x0 + src->w;
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int y1 = y0 + src->h;
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int sx0 = 0;
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int sy0 = 0;
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int sx1 = src->w;
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int sy1 = src->h;
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if (x1 <= dx0 || x0 >= dx1) return;
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if (y1 <= dy0 || y0 >= dy1) return;
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if (x0 < dx0) { sx0 += dx0 - x0; x0 = dx0; }
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if (y0 < dy0) { sy0 += dy0 - y0; y0 = dy0; }
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if (x1 > dx1) { sx1 += dx1 - x1; x1 = dx1; }
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if (y1 > dy1) { sy1 += dy1 - y1; y1 = dy1; }
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sp = src->samples + (sy0 * src->w + sx0);
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dp = dst->samples + ((y0 - dst->y) * dst->w + (x0 - dst->x)) * dst->n;
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w = sx1 - sx0;
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h = sy1 - sy0;
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switch (gc->flag)
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{
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case FNONE:
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assert(dst->n == 1);
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fz_text_1o1(sp, src->w, dp, dst->w, w, h);
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break;
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case FOVER:
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assert(dst->n == 1);
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fz_text_1o1(sp, src->w, dp, dst->w, w, h);
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break;
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case FOVER | FRGB:
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assert(dst->n == 4);
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fz_text_w3i1o4(gc->rgb, sp, src->w, dp, dst->w * 4, w, h);
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break;
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default:
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assert(!"impossible flag in text span function");
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}
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}
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static fz_error *
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rendertext(fz_renderer *gc, fz_textnode *text, fz_matrix ctm)
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{
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fz_error *error;
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fz_irect tbox;
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fz_irect clip;
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fz_matrix tm, trm;
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fz_glyph glyph;
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int i, x, y, cid;
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tbox = fz_roundrect(fz_boundnode((fz_node*)text, ctm));
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clip = fz_intersectirects(gc->clip, tbox);
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DEBUG("text %s n=%d [%g %g %g %g];\n",
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text->font->name, text->len,
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text->trm.a, text->trm.b, text->trm.c, text->trm.d);
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if (fz_isemptyrect(clip))
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return nil;
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if (!(gc->flag & FOVER))
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{
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error = fz_newpixmapwithrect(&gc->dest, clip, 1);
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if (error)
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return error;
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fz_clearpixmap(gc->dest);
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}
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tm = text->trm;
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for (i = 0; i < text->len; i++)
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{
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cid = text->els[i].cid;
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tm.e = text->els[i].x;
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tm.f = text->els[i].y;
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trm = fz_concat(tm, ctm);
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x = fz_floor(trm.e);
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y = fz_floor(trm.f);
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trm.e = QUANT(trm.e - fz_floor(trm.e), HSUBPIX);
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trm.f = QUANT(trm.f - fz_floor(trm.f), VSUBPIX);
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error = fz_renderglyph(gc->cache, &glyph, text->font, cid, trm);
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if (error)
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return error;
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if (!(gc->flag & FOVER))
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drawglyph(gc, gc->dest, &glyph, x, y);
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else
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drawglyph(gc, gc->over, &glyph, x, y);
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}
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return nil;
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}
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/*
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* Image
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*/
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static inline void
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calcimagescale(fz_matrix ctm, int w, int h, int *odx, int *ody)
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{
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float sx, sy;
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int dx, dy;
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sx = sqrt(ctm.a * ctm.a + ctm.b * ctm.b);
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dx = 1;
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while (((w+dx-1)/dx)/sx > 2.0 && (w+dx-1)/dx > 1)
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dx++;
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sy = sqrt(ctm.c * ctm.c + ctm.d * ctm.d);
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dy = 1;
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while (((h+dy-1)/dy)/sy > 2.0 && (h+dy-1)/dy > 1)
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dy++;
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*odx = dx;
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*ody = dy;
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}
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static fz_error *
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renderimage(fz_renderer *gc, fz_imagenode *node, fz_matrix ctm)
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{
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fz_error *error;
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fz_image *image = node->image;
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fz_irect bbox;
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fz_irect clip;
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int dx, dy;
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fz_pixmap *tile;
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fz_pixmap *temp;
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fz_matrix imgmat;
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fz_matrix invmat;
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int fa, fb, fc, fd;
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int u0, v0;
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int x0, y0;
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int w, h;
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DEBUG("image %dx%d %d+%d %s\n{\n", image->w, image->h, image->n, image->a, image->cs?image->cs->name:"(nil)");
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bbox = fz_roundrect(fz_boundnode((fz_node*)node, ctm));
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clip = fz_intersectirects(gc->clip, bbox);
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if (fz_isemptyrect(clip))
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return nil;
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calcimagescale(ctm, image->w, image->h, &dx, &dy);
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DEBUG(" load image\n");
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error = fz_newpixmap(&tile, 0, 0, image->w, image->h, image->n + 1);
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if (error)
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return error;
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error = image->loadtile(image, tile);
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if (error)
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goto cleanup;
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if (dx != 1 || dy != 1)
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{
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DEBUG(" scale image 1/%d 1/%d\n", dx, dy);
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error = fz_scalepixmap(&temp, tile, dx, dy);
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if (error)
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goto cleanup;
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fz_droppixmap(tile);
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tile = temp;
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}
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if (image->cs && image->cs != gc->model)
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{
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DEBUG(" convert from %s to %s\n", image->cs->name, gc->model->name);
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error = fz_newpixmap(&temp, tile->x, tile->y, tile->w, tile->h, gc->model->n + 1);
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if (error)
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goto cleanup;
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fz_convertpixmap(image->cs, tile, gc->model, temp);
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fz_droppixmap(tile);
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tile = temp;
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}
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imgmat.a = 1.0 / tile->w;
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imgmat.b = 0.0;
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imgmat.c = 0.0;
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imgmat.d = -1.0 / tile->h;
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imgmat.e = 0.0;
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imgmat.f = 1.0;
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invmat = fz_invertmatrix(fz_concat(imgmat, ctm));
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w = clip.x1 - clip.x0;
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h = clip.y1 - clip.y0;
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x0 = clip.x0;
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y0 = clip.y0;
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u0 = (invmat.a * (x0+0.5) + invmat.c * (y0+0.5) + invmat.e) * 65536;
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v0 = (invmat.b * (x0+0.5) + invmat.d * (y0+0.5) + invmat.f) * 65536;
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fa = invmat.a * 65536;
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fb = invmat.b * 65536;
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fc = invmat.c * 65536;
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fd = invmat.d * 65536;
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#define PSRC tile->samples, tile->w, tile->h
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#define PDST(p) p->samples + ((y0-p->y) * p->w + (x0-p->x)) * p->n, p->w * p->n
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#define PCTM u0, v0, fa, fb, fc, fd, w, h
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switch (gc->flag)
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{
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case FNONE:
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{
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DEBUG(" fnone %d x %d\n", w, h);
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if (image->cs)
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error = fz_newpixmapwithrect(&gc->dest, clip, gc->model->n + 1);
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else
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error = fz_newpixmapwithrect(&gc->dest, clip, 1);
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if (error)
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goto cleanup;
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if (image->cs)
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fz_img_4c4(PSRC, PDST(gc->dest), PCTM);
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else
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fz_img_1c1(PSRC, PDST(gc->dest), PCTM);
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}
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break;
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case FOVER:
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{
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DEBUG(" fover %d x %d\n", w, h);
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if (image->cs)
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fz_img_4o4(PSRC, PDST(gc->over), PCTM);
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else
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fz_img_1o1(PSRC, PDST(gc->over), PCTM);
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}
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break;
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case FOVER | FRGB:
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DEBUG(" fover+rgb %d x %d\n", w, h);
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fz_img_w3i1o4(gc->rgb, PSRC, PDST(gc->over), PCTM);
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break;
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default:
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assert(!"impossible flag in image span function");
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}
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DEBUG("}\n");
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fz_droppixmap(tile);
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return nil;
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cleanup:
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fz_droppixmap(tile);
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return error;
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}
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/*
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* Shade
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*/
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static fz_error *
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rendershade(fz_renderer *gc, fz_shadenode *node, fz_matrix ctm)
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{
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fz_error *error;
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fz_irect bbox;
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assert(!gc->maskonly);
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DEBUG("shade;\n");
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bbox = fz_roundrect(fz_boundnode((fz_node*)node, ctm));
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bbox = fz_intersectirects(gc->clip, bbox);
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error = fz_newpixmapwithrect(&gc->dest, bbox, gc->model->n + 1);
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if (error)
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return error;
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return fz_rendershade(node->shade, ctm, gc->model, gc->dest);
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}
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/*
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* Over, Mask and Blend
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*/
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static void
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blendover(fz_renderer *gc, fz_pixmap *src, fz_pixmap *dst)
|
|
{
|
|
unsigned char *sp, *dp;
|
|
fz_irect sr, dr;
|
|
int x, y, w, h;
|
|
|
|
sr.x0 = src->x;
|
|
sr.y0 = src->y;
|
|
sr.x1 = src->x + src->w;
|
|
sr.y1 = src->y + src->h;
|
|
|
|
dr.x0 = dst->x;
|
|
dr.y0 = dst->y;
|
|
dr.x1 = dst->x + dst->w;
|
|
dr.y1 = dst->y + dst->h;
|
|
|
|
dr = fz_intersectirects(sr, dr);
|
|
x = dr.x0;
|
|
y = dr.y0;
|
|
w = dr.x1 - dr.x0;
|
|
h = dr.y1 - dr.y0;
|
|
|
|
sp = src->samples + ((y - src->y) * src->w + (x - src->x)) * src->n;
|
|
dp = dst->samples + ((y - dst->y) * dst->w + (x - dst->x)) * dst->n;
|
|
|
|
if (src->n == 1 && dst->n == 1)
|
|
fz_duff_1o1(sp, src->w, dp, dst->w, w, h);
|
|
else if (src->n == 4 && dst->n == 4)
|
|
fz_duff_4o4(sp, src->w * 4, dp, dst->w * 4, w, h);
|
|
else if (src->n == dst->n)
|
|
fz_duff_non(sp, src->w * src->n, src->n, dp, dst->w * dst->n, w, h);
|
|
else
|
|
assert(!"blendover src and dst mismatch");
|
|
}
|
|
|
|
static void
|
|
blendmask(fz_renderer *gc, fz_pixmap *src, fz_pixmap *msk, fz_pixmap *dst, int over)
|
|
{
|
|
unsigned char *sp, *dp, *mp;
|
|
fz_irect sr, dr, mr;
|
|
int x, y, w, h;
|
|
|
|
sr.x0 = src->x;
|
|
sr.y0 = src->y;
|
|
sr.x1 = src->x + src->w;
|
|
sr.y1 = src->y + src->h;
|
|
|
|
dr.x0 = dst->x;
|
|
dr.y0 = dst->y;
|
|
dr.x1 = dst->x + dst->w;
|
|
dr.y1 = dst->y + dst->h;
|
|
|
|
mr.x0 = msk->x;
|
|
mr.y0 = msk->y;
|
|
mr.x1 = msk->x + msk->w;
|
|
mr.y1 = msk->y + msk->h;
|
|
|
|
dr = fz_intersectirects(sr, dr);
|
|
dr = fz_intersectirects(dr, mr);
|
|
x = dr.x0;
|
|
y = dr.y0;
|
|
w = dr.x1 - dr.x0;
|
|
h = dr.y1 - dr.y0;
|
|
|
|
sp = src->samples + ((y - src->y) * src->w + (x - src->x)) * src->n;
|
|
mp = msk->samples + ((y - msk->y) * msk->w + (x - msk->x)) * msk->n;
|
|
dp = dst->samples + ((y - dst->y) * dst->w + (x - dst->x)) * dst->n;
|
|
|
|
if (over)
|
|
{
|
|
if (src->n == 1 && msk->n == 1 && dst->n == 1)
|
|
fz_duff_1i1o1(sp, src->w, mp, msk->w, dp, dst->w, w, h);
|
|
else if (src->n == 4 && msk->n == 1 && dst->n == 4)
|
|
fz_duff_4i1o4(sp, src->w * 4, mp, msk->w, dp, dst->w * 4, w, h);
|
|
else if (src->n == dst->n)
|
|
fz_duff_nimon(sp, src->w * src->n, src->n, mp, msk->w * msk->n, msk->n, dp, dst->w * dst->n, w, h);
|
|
else
|
|
assert(!"blendmaskover src and msk and dst mismatch");
|
|
}
|
|
else
|
|
{
|
|
if (src->n == 1 && msk->n == 1 && dst->n == 1)
|
|
fz_duff_1i1c1(sp, src->w, mp, msk->w, dp, dst->w, w, h);
|
|
else if (src->n == 4 && msk->n == 1 && dst->n == 4)
|
|
fz_duff_4i1c4(sp, src->w * 4, mp, msk->w, dp, dst->w * 4, w, h);
|
|
else if (src->n == dst->n)
|
|
fz_duff_nimcn(sp, src->w * src->n, src->n, mp, msk->w * msk->n, msk->n, dp, dst->w * dst->n, w, h);
|
|
else
|
|
assert(!"blendmask src and msk and dst mismatch");
|
|
}
|
|
}
|
|
|
|
static fz_error *
|
|
renderover(fz_renderer *gc, fz_overnode *over, fz_matrix ctm)
|
|
{
|
|
fz_error *error;
|
|
fz_node *child;
|
|
int cluster = 0;
|
|
|
|
if (!gc->over)
|
|
{
|
|
DEBUG("over cluster %d\n{\n", gc->maskonly ? 1 : 4);
|
|
cluster = 1;
|
|
if (gc->maskonly)
|
|
error = fz_newpixmapwithrect(&gc->over, gc->clip, 1);
|
|
else
|
|
error = fz_newpixmapwithrect(&gc->over, gc->clip, 4);
|
|
if (error)
|
|
return error;
|
|
fz_clearpixmap(gc->over);
|
|
}
|
|
else DEBUG("over\n{\n");
|
|
|
|
for (child = over->super.first; child; child = child->next)
|
|
{
|
|
error = rendernode(gc, child, ctm);
|
|
if (error)
|
|
return error;
|
|
if (gc->dest)
|
|
{
|
|
blendover(gc, gc->dest, gc->over);
|
|
fz_droppixmap(gc->dest);
|
|
gc->dest = nil;
|
|
}
|
|
}
|
|
|
|
if (cluster)
|
|
{
|
|
gc->dest = gc->over;
|
|
gc->over = nil;
|
|
}
|
|
|
|
DEBUG("}\n");
|
|
|
|
return nil;
|
|
}
|
|
|
|
static fz_error *
|
|
rendermask(fz_renderer *gc, fz_masknode *mask, fz_matrix ctm)
|
|
{
|
|
fz_error *error;
|
|
int oldmaskonly;
|
|
fz_pixmap *oldover;
|
|
fz_irect oldclip;
|
|
fz_irect bbox;
|
|
fz_irect clip;
|
|
fz_pixmap *shapepix = nil;
|
|
fz_pixmap *colorpix = nil;
|
|
fz_node *shape;
|
|
fz_node *color;
|
|
float rgb[3];
|
|
|
|
shape = mask->super.first;
|
|
color = shape->next;
|
|
|
|
/* special case black voodo */
|
|
if (gc->flag & FOVER)
|
|
{
|
|
if (fz_issolidnode(color))
|
|
{
|
|
fz_solidnode *solid = (fz_solidnode*)color;
|
|
|
|
fz_convertcolor(solid->cs, solid->samples, gc->model, rgb);
|
|
gc->rgb[0] = rgb[0] * 255;
|
|
gc->rgb[1] = rgb[1] * 255;
|
|
gc->rgb[2] = rgb[2] * 255;
|
|
gc->flag |= FRGB;
|
|
|
|
/* we know these can handle the FRGB shortcut */
|
|
if (fz_ispathnode(shape))
|
|
return renderpath(gc, (fz_pathnode*)shape, ctm);
|
|
if (fz_istextnode(shape))
|
|
return rendertext(gc, (fz_textnode*)shape, ctm);
|
|
if (fz_isimagenode(shape))
|
|
return renderimage(gc, (fz_imagenode*)shape, ctm);
|
|
}
|
|
}
|
|
|
|
oldclip = gc->clip;
|
|
oldover = gc->over;
|
|
|
|
bbox = fz_roundrect(fz_boundnode(shape, ctm));
|
|
clip = fz_intersectirects(bbox, gc->clip);
|
|
bbox = fz_roundrect(fz_boundnode(color, ctm));
|
|
clip = fz_intersectirects(bbox, clip);
|
|
|
|
if (fz_isemptyrect(clip))
|
|
return nil;
|
|
|
|
DEBUG("mask [%d %d %d %d]\n{\n", clip.x0, clip.y0, clip.x1, clip.y1);
|
|
|
|
{
|
|
fz_irect sbox = fz_roundrect(fz_boundnode(shape, ctm));
|
|
fz_irect cbox = fz_roundrect(fz_boundnode(color, ctm));
|
|
if (cbox.x0 >= sbox.x0 && cbox.x1 <= sbox.x1)
|
|
if (cbox.y0 >= sbox.y0 && cbox.y1 <= sbox.y1)
|
|
DEBUG("potentially useless mask\n");
|
|
}
|
|
|
|
gc->clip = clip;
|
|
gc->over = nil;
|
|
|
|
oldmaskonly = gc->maskonly;
|
|
gc->maskonly = 1;
|
|
|
|
error = rendernode(gc, shape, ctm);
|
|
if (error)
|
|
goto cleanup;
|
|
shapepix = gc->dest;
|
|
gc->dest = nil;
|
|
|
|
gc->maskonly = oldmaskonly;
|
|
|
|
error = rendernode(gc, color, ctm);
|
|
if (error)
|
|
goto cleanup;
|
|
colorpix = gc->dest;
|
|
gc->dest = nil;
|
|
|
|
gc->clip = oldclip;
|
|
gc->over = oldover;
|
|
|
|
if (shapepix && colorpix)
|
|
{
|
|
if (gc->over)
|
|
{
|
|
blendmask(gc, colorpix, shapepix, gc->over, 1);
|
|
}
|
|
else
|
|
{
|
|
clip.x0 = MAX(colorpix->x, shapepix->x);
|
|
clip.y0 = MAX(colorpix->y, shapepix->y);
|
|
clip.x1 = MIN(colorpix->x+colorpix->w, shapepix->x+shapepix->w);
|
|
clip.y1 = MIN(colorpix->y+colorpix->h, shapepix->y+shapepix->h);
|
|
error = fz_newpixmapwithrect(&gc->dest, clip, colorpix->n);
|
|
if (error)
|
|
goto cleanup;
|
|
blendmask(gc, colorpix, shapepix, gc->dest, 0);
|
|
}
|
|
}
|
|
|
|
DEBUG("}\n");
|
|
|
|
if (shapepix) fz_droppixmap(shapepix);
|
|
if (colorpix) fz_droppixmap(colorpix);
|
|
return nil;
|
|
|
|
cleanup:
|
|
if (shapepix) fz_droppixmap(shapepix);
|
|
if (colorpix) fz_droppixmap(colorpix);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Dispatch
|
|
*/
|
|
|
|
static fz_error *
|
|
rendernode(fz_renderer *gc, fz_node *node, fz_matrix ctm)
|
|
{
|
|
if (!node)
|
|
return nil;
|
|
|
|
gc->flag = FNONE;
|
|
if (gc->over)
|
|
gc->flag |= FOVER;
|
|
|
|
switch (node->kind)
|
|
{
|
|
case FZ_NOVER:
|
|
return renderover(gc, (fz_overnode*)node, ctm);
|
|
case FZ_NMASK:
|
|
return rendermask(gc, (fz_masknode*)node, ctm);
|
|
case FZ_NTRANSFORM:
|
|
return rendertransform(gc, (fz_transformnode*)node, ctm);
|
|
case FZ_NCOLOR:
|
|
return rendersolid(gc, (fz_solidnode*)node, ctm);
|
|
case FZ_NPATH:
|
|
return renderpath(gc, (fz_pathnode*)node, ctm);
|
|
case FZ_NTEXT:
|
|
return rendertext(gc, (fz_textnode*)node, ctm);
|
|
case FZ_NIMAGE:
|
|
return renderimage(gc, (fz_imagenode*)node, ctm);
|
|
case FZ_NSHADE:
|
|
return rendershade(gc, (fz_shadenode*)node, ctm);
|
|
case FZ_NLINK:
|
|
return rendernode(gc, ((fz_linknode*)node)->tree->root, ctm);
|
|
case FZ_NMETA:
|
|
return rendernode(gc, node->first, ctm);
|
|
}
|
|
|
|
return nil;
|
|
}
|
|
|
|
fz_error *
|
|
fz_rendertree(fz_pixmap **outp,
|
|
fz_renderer *gc, fz_tree *tree, fz_matrix ctm,
|
|
fz_irect bbox, int white)
|
|
{
|
|
fz_error *error;
|
|
|
|
gc->clip = bbox;
|
|
gc->over = nil;
|
|
|
|
if (gc->maskonly)
|
|
error = fz_newpixmapwithrect(&gc->over, bbox, 1);
|
|
else
|
|
error = fz_newpixmapwithrect(&gc->over, bbox, 4);
|
|
if (error)
|
|
return error;
|
|
|
|
if (white)
|
|
memset(gc->over->samples, 0xff, gc->over->w * gc->over->h * gc->over->n);
|
|
else
|
|
memset(gc->over->samples, 0x00, gc->over->w * gc->over->h * gc->over->n);
|
|
|
|
DEBUG("tree %d [%d %d %d %d]\n{\n",
|
|
gc->maskonly ? 1 : 4,
|
|
bbox.x0, bbox.y0, bbox.x1, bbox.y1);
|
|
|
|
error = rendernode(gc, tree->root, ctm);
|
|
if (error)
|
|
return error;
|
|
|
|
DEBUG("}\n");
|
|
|
|
if (gc->dest)
|
|
{
|
|
blendover(gc, gc->dest, gc->over);
|
|
fz_droppixmap(gc->dest);
|
|
gc->dest = nil;
|
|
}
|
|
|
|
*outp = gc->over;
|
|
gc->over = nil;
|
|
|
|
return nil;
|
|
}
|
|
|
|
fz_error *
|
|
fz_rendertreeover(fz_renderer *gc, fz_pixmap *dest, fz_tree *tree, fz_matrix ctm)
|
|
{
|
|
fz_error *error;
|
|
|
|
assert(!gc->maskonly);
|
|
assert(dest->n == 4);
|
|
|
|
gc->clip.x0 = dest->x;
|
|
gc->clip.y0 = dest->y;
|
|
gc->clip.x1 = dest->x + dest->w;
|
|
gc->clip.y1 = dest->y + dest->h;
|
|
|
|
gc->over = dest;
|
|
|
|
error = rendernode(gc, tree->root, ctm);
|
|
if (error)
|
|
{
|
|
gc->over = nil;
|
|
return error;
|
|
}
|
|
|
|
if (gc->dest)
|
|
{
|
|
blendover(gc, gc->dest, gc->over);
|
|
fz_droppixmap(gc->dest);
|
|
gc->dest = nil;
|
|
}
|
|
|
|
gc->over = nil;
|
|
|
|
return nil;
|
|
}
|
|
|