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|
#include "fitz_base.h"
#include "fitz_res.h"
#include "fitz_draw.h"
#ifdef _MSC_VER
#define noDebug printf
#ifndef DEBUG
#define DEBUG
#endif
#else
#define noDEBUG(args...) printf(args)
#ifndef DEBUG
#define DEBUG(args...)
#endif
#endif
#define QUANT(x,a) (((int)((x) * (a))) / (a))
#define HSUBPIX 5.0
#define VSUBPIX 5.0
#define FNONE 0
#define FOVER 1
#define FRGB 4
static fz_error rendernode(fz_renderer *gc, fz_node *node, fz_matrix ctm);
fz_error
fz_newrenderer(fz_renderer **gcp, fz_colorspace *pcm, int maskonly, int gcmem)
{
fz_error error;
fz_renderer *gc;
gc = fz_malloc(sizeof(fz_renderer));
if (!gc)
return fz_rethrow(-1, "out of memory");
gc->maskonly = maskonly;
gc->model = pcm;
gc->cache = nil;
gc->gel = nil;
gc->ael = nil;
error = fz_newglyphcache(&gc->cache, gcmem / 24, gcmem);
if (error)
goto cleanup;
error = fz_newgel(&gc->gel);
if (error)
goto cleanup;
error = fz_newael(&gc->ael);
if (error)
goto cleanup;
gc->dest = nil;
gc->over = nil;
gc->argb[0] = 255;
gc->argb[1] = 0;
gc->argb[2] = 0;
gc->argb[3] = 0;
gc->argb[4] = 0;
gc->argb[5] = 0;
gc->argb[6] = 0;
gc->flag = 0;
*gcp = gc;
return fz_okay;
cleanup:
if (gc->model) fz_dropcolorspace(gc->model);
if (gc->cache) fz_dropglyphcache(gc->cache);
if (gc->gel) fz_dropgel(gc->gel);
if (gc->ael) fz_dropael(gc->ael);
fz_free(gc);
return error;
}
void
fz_droprenderer(fz_renderer *gc)
{
if (gc->dest) fz_droppixmap(gc->dest);
if (gc->over) fz_droppixmap(gc->over);
if (gc->model) fz_dropcolorspace(gc->model);
if (gc->cache) fz_dropglyphcache(gc->cache);
if (gc->gel) fz_dropgel(gc->gel);
if (gc->ael) fz_dropael(gc->ael);
fz_free(gc);
}
/*
* Transform
*/
static fz_error
rendertransform(fz_renderer *gc, fz_transformnode *transform, fz_matrix ctm)
{
fz_error error;
DEBUG("transform [%g %g %g %g %g %g]\n",
transform->m.a, transform->m.b,
transform->m.c, transform->m.d,
transform->m.e, transform->m.f);
DEBUG("{\n");
ctm = fz_concat(transform->m, ctm);
error = rendernode(gc, transform->super.first, ctm);
DEBUG("}\n");
return error;
}
/*
* Color
*/
static fz_error
rendersolid(fz_renderer *gc, fz_solidnode *solid, fz_matrix ctm)
{
fz_error error;
float rgb[3];
unsigned char a, r, g, b;
unsigned char *p;
int n;
if (gc->maskonly)
return fz_throw("assert: mask only renderer");
if (gc->model->n != 3)
return fz_throw("assert: non-rgb renderer");
fz_convertcolor(solid->cs, solid->samples, gc->model, rgb);
gc->argb[0] = solid->a * 255;
gc->argb[1] = rgb[0] * solid->a * 255;
gc->argb[2] = rgb[1] * solid->a * 255;
gc->argb[3] = rgb[2] * solid->a * 255;
gc->argb[4] = rgb[0] * 255;
gc->argb[5] = rgb[1] * 255;
gc->argb[6] = rgb[2] * 255;
DEBUG("solid %s [%d %d %d %d];\n", solid->cs->name, gc->argb[0], gc->argb[1], gc->argb[2], gc->argb[3]);
if (gc->flag == FOVER)
{
p = gc->over->samples;
n = gc->over->w * gc->over->h;
}
else
{
error = fz_newpixmapwithrect(&gc->dest, gc->clip, 4);
if (error)
return error;
p = gc->dest->samples;
n = gc->dest->w * gc->dest->h;
}
a = gc->argb[0];
r = gc->argb[1];
g = gc->argb[2];
b = gc->argb[3];
if ((p - (unsigned char *)0) & 3) {
while (n--)
{
p[0] = a;
p[1] = r;
p[2] = g;
p[3] = b;
p += 4;
}
}
else
{
unsigned *pw = (unsigned *)p;
#if BYTE_ORDER == LITTLE_ENDIAN
unsigned argb = a | (r << 8) | (g << 16) | (b << 24);
#else
unsigned argb = (a << 24) | (r << 16) | (g << 8) | b;
#endif
while (n--)
{
*pw++ = argb;
}
}
return fz_okay;
}
/*
* Path
*/
static fz_error
renderpath(fz_renderer *gc, fz_pathnode *path, fz_matrix ctm)
{
fz_error error;
float flatness;
fz_irect gbox;
fz_irect clip;
float expansion = fz_matrixexpansion(ctm);
flatness = 0.3 / expansion;
if (flatness < 0.1)
flatness = 0.1;
fz_resetgel(gc->gel, gc->clip);
if (path->paint == FZ_STROKE)
{
float lw = path->linewidth;
/* Check for hairline */
if (lw * expansion < 0.1)
lw = 1.0f / expansion;
if (path->dash)
error = fz_dashpath(gc->gel, path, ctm, flatness, lw);
else
error = fz_strokepath(gc->gel, path, ctm, flatness, lw);
}
else
error = fz_fillpath(gc->gel, path, ctm, flatness);
if (error)
return error;
fz_sortgel(gc->gel);
gbox = fz_boundgel(gc->gel);
clip = fz_intersectirects(gc->clip, gbox);
if (fz_isemptyrect(clip))
return fz_okay;
DEBUG("path %s;\n", path->paint == FZ_STROKE ? "stroke" : "fill");
if (gc->flag & FRGB)
{
DEBUG(" path rgb %d %d %d %d, %d %d %d\n", gc->argb[0], gc->argb[1], gc->argb[2], gc->argb[3], gc->argb[4], gc->argb[5], gc->argb[6]);
return fz_scanconvert(gc->gel, gc->ael, path->paint == FZ_EOFILL,
clip, gc->over, gc->argb, 1);
}
else if (gc->flag & FOVER)
{
return fz_scanconvert(gc->gel, gc->ael, path->paint == FZ_EOFILL,
clip, gc->over, nil, 1);
}
else
{
error = fz_newpixmapwithrect(&gc->dest, clip, 1);
if (error)
return error;
fz_clearpixmap(gc->dest);
return fz_scanconvert(gc->gel, gc->ael, path->paint == FZ_EOFILL,
clip, gc->dest, nil, 0);
}
}
/*
* Text
*/
static void drawglyph(fz_renderer *gc, fz_pixmap *dst, fz_glyph *src, int xorig, int yorig)
{
unsigned char *dp, *sp;
int w, h;
int dx0 = dst->x;
int dy0 = dst->y;
int dx1 = dst->x + dst->w;
int dy1 = dst->y + dst->h;
int x0 = xorig + src->x;
int y0 = yorig + src->y;
int x1 = x0 + src->w;
int y1 = y0 + src->h;
int sx0 = 0;
int sy0 = 0;
int sx1 = src->w;
int sy1 = src->h;
if (x1 <= dx0 || x0 >= dx1) return;
if (y1 <= dy0 || y0 >= dy1) return;
if (x0 < dx0) { sx0 += dx0 - x0; x0 = dx0; }
if (y0 < dy0) { sy0 += dy0 - y0; y0 = dy0; }
if (x1 > dx1) { sx1 += dx1 - x1; x1 = dx1; }
if (y1 > dy1) { sy1 += dy1 - y1; y1 = dy1; }
sp = src->samples + (sy0 * src->w + sx0);
dp = dst->samples + ((y0 - dst->y) * dst->w + (x0 - dst->x)) * dst->n;
w = sx1 - sx0;
h = sy1 - sy0;
switch (gc->flag)
{
case FNONE:
assert(dst->n == 1);
fz_text_1o1(sp, src->w, dp, dst->w, w, h);
break;
case FOVER:
assert(dst->n == 1);
fz_text_1o1(sp, src->w, dp, dst->w, w, h);
break;
case FOVER | FRGB:
assert(dst->n == 4);
fz_text_w4i1o4(gc->argb, sp, src->w, dp, dst->w * 4, w, h);
break;
default:
assert(!"impossible flag in text span function");
}
}
static fz_error
rendertext(fz_renderer *gc, fz_textnode *text, fz_matrix ctm)
{
fz_error error;
fz_irect tbox;
fz_irect clip;
fz_matrix tm, trm;
fz_glyph glyph;
int i, x, y, gid;
tbox = fz_roundrect(fz_boundnode((fz_node*)text, ctm));
clip = fz_intersectirects(gc->clip, tbox);
DEBUG("text %s n=%d [%g %g %g %g];\n",
text->font->name, text->len,
text->trm.a, text->trm.b, text->trm.c, text->trm.d);
if (fz_isemptyrect(clip))
return fz_okay;
if (!(gc->flag & FOVER))
{
error = fz_newpixmapwithrect(&gc->dest, clip, 1);
if (error)
return error;
fz_clearpixmap(gc->dest);
}
tm = text->trm;
for (i = 0; i < text->len; i++)
{
gid = text->els[i].gid;
tm.e = text->els[i].x;
tm.f = text->els[i].y;
trm = fz_concat(tm, ctm);
x = fz_floor(trm.e);
y = fz_floor(trm.f);
trm.e = QUANT(trm.e - fz_floor(trm.e), HSUBPIX);
trm.f = QUANT(trm.f - fz_floor(trm.f), VSUBPIX);
error = fz_renderglyph(gc->cache, &glyph, text->font, gid, trm);
if (error)
return error;
if (!(gc->flag & FOVER))
drawglyph(gc, gc->dest, &glyph, x, y);
else
drawglyph(gc, gc->over, &glyph, x, y);
}
return fz_okay;
}
/*
* Image
*/
static inline void
calcimagescale(fz_matrix ctm, int w, int h, int *odx, int *ody)
{
float sx, sy;
int dx, dy;
sx = sqrt(ctm.a * ctm.a + ctm.b * ctm.b);
dx = 1;
while (((w+dx-1)/dx)/sx > 2.0 && (w+dx-1)/dx > 1)
dx++;
sy = sqrt(ctm.c * ctm.c + ctm.d * ctm.d);
dy = 1;
while (((h+dy-1)/dy)/sy > 2.0 && (h+dy-1)/dy > 1)
dy++;
*odx = dx;
*ody = dy;
}
static fz_error
renderimage(fz_renderer *gc, fz_imagenode *node, fz_matrix ctm)
{
fz_error error;
fz_image *image = node->image;
fz_irect bbox;
fz_irect clip;
int dx, dy;
fz_pixmap *tile;
fz_pixmap *temp;
fz_matrix imgmat;
fz_matrix invmat;
int fa, fb, fc, fd;
int u0, v0;
int x0, y0;
int w, h;
int tileheight;
DEBUG("image %dx%d %d+%d %s\n{\n", image->w, image->h, image->n, image->a, image->cs?image->cs->name:"(nil)");
bbox = fz_roundrect(fz_boundnode((fz_node*)node, ctm));
clip = fz_intersectirects(gc->clip, bbox);
if (fz_isemptyrect(clip))
return fz_okay;
if (image->w == 0 || image->h == 0)
return fz_okay;
calcimagescale(ctm, image->w, image->h, &dx, &dy);
/* try to fit tile into a typical L2 cachce */
tileheight = 512 * 1024 / (image->w * (image->n + image->a));
/* tileheight must be an even multiple of dy, except for last band */
tileheight = (tileheight + dy - 1) / dy * dy;
if ((dx != 1 || dy != 1) && image->h > tileheight) {
int y = 0;
DEBUG(" load image tile size = %dx%d\n", image->w, tileheight);
error = fz_newpixmap(&tile, 0, 0, image->w,
tileheight, image->n + 1);
if (error)
return error;
error = fz_newscaledpixmap(&temp, image->w, image->h, image->n + 1, dx, dy);
if (error)
goto cleanup;
do {
if (y + tileheight > image->h)
tileheight = image->h - y;
tile->y = y;
tile->h = tileheight;
DEBUG(" tile xywh=%d %d %d %d sxsy=1/%d 1/%d\n",
0, y, image->w, tileheight, dx, dy);
error = image->loadtile(image, tile);
if (error)
goto cleanup1;
error = fz_scalepixmaptile(temp, 0, y, tile, dx, dy);
if (error)
goto cleanup1;
y += tileheight;
} while (y < image->h);
fz_droppixmap(tile);
tile = temp;
}
else {
DEBUG(" load image\n");
error = fz_newpixmap(&tile, 0, 0, image->w, image->h, image->n + 1);
if (error)
return error;
error = image->loadtile(image, tile);
if (error)
goto cleanup;
if (dx != 1 || dy != 1)
{
DEBUG(" scale image 1/%d 1/%d\n", dx, dy);
error = fz_scalepixmap(&temp, tile, dx, dy);
if (error)
goto cleanup;
fz_droppixmap(tile);
tile = temp;
}
}
if (image->cs && image->cs != gc->model)
{
DEBUG(" convert from %s to %s\n", image->cs->name, gc->model->name);
error = fz_newpixmap(&temp, tile->x, tile->y, tile->w, tile->h, gc->model->n + 1);
if (error)
goto cleanup;
fz_convertpixmap(image->cs, tile, gc->model, temp);
fz_droppixmap(tile);
tile = temp;
}
imgmat.a = 1.0 / tile->w;
imgmat.b = 0.0;
imgmat.c = 0.0;
imgmat.d = -1.0 / tile->h;
imgmat.e = 0.0;
imgmat.f = 1.0;
invmat = fz_invertmatrix(fz_concat(imgmat, ctm));
invmat.e -= 0.5;
invmat.f -= 0.5;
w = clip.x1 - clip.x0;
h = clip.y1 - clip.y0;
x0 = clip.x0;
y0 = clip.y0;
u0 = (invmat.a * (x0+0.5) + invmat.c * (y0+0.5) + invmat.e) * 65536;
v0 = (invmat.b * (x0+0.5) + invmat.d * (y0+0.5) + invmat.f) * 65536;
fa = invmat.a * 65536;
fb = invmat.b * 65536;
fc = invmat.c * 65536;
fd = invmat.d * 65536;
#define PSRC tile->samples, tile->w, tile->h
#define PDST(p) p->samples + ((y0-p->y) * p->w + (x0-p->x)) * p->n, p->w * p->n
#define PCTM u0, v0, fa, fb, fc, fd, w, h
switch (gc->flag)
{
case FNONE:
{
DEBUG(" fnone %d x %d\n", w, h);
if (image->cs)
error = fz_newpixmapwithrect(&gc->dest, clip, gc->model->n + 1);
else
error = fz_newpixmapwithrect(&gc->dest, clip, 1);
if (error)
goto cleanup;
if (image->cs)
fz_img_4c4(PSRC, PDST(gc->dest), PCTM);
else
fz_img_1c1(PSRC, PDST(gc->dest), PCTM);
}
break;
case FOVER:
{
DEBUG(" fover %d x %d\n", w, h);
if (image->cs)
fz_img_4o4(PSRC, PDST(gc->over), PCTM);
else
fz_img_1o1(PSRC, PDST(gc->over), PCTM);
}
break;
case FOVER | FRGB:
DEBUG(" fover+rgb %d x %d\n", w, h);
fz_img_w4i1o4(gc->argb, PSRC, PDST(gc->over), PCTM);
break;
default:
assert(!"impossible flag in image span function");
}
DEBUG("}\n");
fz_droppixmap(tile);
return fz_okay;
cleanup1:
fz_droppixmap(temp);
cleanup:
fz_droppixmap(tile);
return error;
}
/*
* Shade
*/
static fz_error
rendershade(fz_renderer *gc, fz_shadenode *node, fz_matrix ctm)
{
fz_error error;
fz_irect bbox;
assert(!gc->maskonly);
DEBUG("shade;\n");
bbox = fz_roundrect(fz_boundnode((fz_node*)node, ctm));
bbox = fz_intersectirects(gc->clip, bbox);
error = fz_newpixmapwithrect(&gc->dest, bbox, gc->model->n + 1);
if (error)
return error;
return fz_rendershade(node->shade, ctm, gc->model, gc->dest);
}
/*
* Over, Mask and Blend
*/
static void
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 fz_okay;
}
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->argb[0] = solid->a * 255;
gc->argb[1] = rgb[0] * solid->a * 255;
gc->argb[2] = rgb[1] * solid->a * 255;
gc->argb[3] = rgb[2] * solid->a * 255;
gc->argb[4] = rgb[0] * 255;
gc->argb[5] = rgb[1] * 255;
gc->argb[6] = 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 fz_okay;
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 fz_okay;
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 fz_okay;
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_NBLEND:
return fz_okay;
}
return fz_okay;
}
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 fz_okay;
}
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 fz_okay;
}
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