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#include "fitz.h"
#define ISOLATED 1
#define KNOCKOUT 2
static fz_displaynode *
fz_newdisplaynode(fz_displaycommand cmd, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_displaynode *node;
int i;
node = fz_malloc(sizeof(fz_displaynode));
node->cmd = cmd;
node->next = nil;
node->rect = fz_emptyrect;
node->item.path = nil;
node->stroke = nil;
node->flag = 0;
node->ctm = ctm;
if (colorspace)
{
node->colorspace = fz_keepcolorspace(colorspace);
if (color)
{
for (i = 0; i < node->colorspace->n; i++)
node->color[i] = color[i];
}
}
else
{
node->colorspace = nil;
}
node->alpha = alpha;
return node;
}
static fz_strokestate *
fz_clonestrokestate(fz_strokestate *stroke)
{
fz_strokestate *newstroke = fz_malloc(sizeof(fz_strokestate));
*newstroke = *stroke;
return newstroke;
}
static void
fz_appenddisplaynode(fz_displaylist *list, fz_displaynode *node)
{
if (!list->first)
{
list->first = node;
list->last = node;
}
else
{
list->last->next = node;
list->last = node;
}
}
static void
fz_freedisplaynode(fz_displaynode *node)
{
switch (node->cmd)
{
case FZ_CMDFILLPATH:
case FZ_CMDSTROKEPATH:
case FZ_CMDCLIPPATH:
case FZ_CMDCLIPSTROKEPATH:
fz_freepath(node->item.path);
break;
case FZ_CMDFILLTEXT:
case FZ_CMDSTROKETEXT:
case FZ_CMDCLIPTEXT:
case FZ_CMDCLIPSTROKETEXT:
case FZ_CMDIGNORETEXT:
fz_freetext(node->item.text);
break;
case FZ_CMDFILLSHADE:
fz_dropshade(node->item.shade);
break;
case FZ_CMDFILLIMAGE:
case FZ_CMDFILLIMAGEMASK:
case FZ_CMDCLIPIMAGEMASK:
fz_droppixmap(node->item.image);
break;
case FZ_CMDPOPCLIP:
case FZ_CMDBEGINMASK:
case FZ_CMDENDMASK:
case FZ_CMDBEGINGROUP:
case FZ_CMDENDGROUP:
break;
}
if (node->stroke)
fz_free(node->stroke);
if (node->colorspace)
fz_dropcolorspace(node->colorspace);
fz_free(node);
}
static void
fz_listfillpath(void *user, fz_path *path, int evenodd, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDFILLPATH, ctm, colorspace, color, alpha);
node->rect = fz_boundpath(path, nil, ctm);
node->item.path = fz_clonepath(path);
node->flag = evenodd;
fz_appenddisplaynode(user, node);
}
static void
fz_liststrokepath(void *user, fz_path *path, fz_strokestate *stroke, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDSTROKEPATH, ctm, colorspace, color, alpha);
node->rect = fz_boundpath(path, stroke, ctm);
node->item.path = fz_clonepath(path);
node->stroke = fz_clonestrokestate(stroke);
fz_appenddisplaynode(user, node);
}
static void
fz_listclippath(void *user, fz_path *path, int evenodd, fz_matrix ctm)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDCLIPPATH, ctm, nil, nil, 0);
node->rect = fz_boundpath(path, nil, ctm);
node->item.path = fz_clonepath(path);
node->flag = evenodd;
fz_appenddisplaynode(user, node);
}
static void
fz_listclipstrokepath(void *user, fz_path *path, fz_strokestate *stroke, fz_matrix ctm)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDCLIPSTROKEPATH, ctm, nil, nil, 0);
node->rect = fz_boundpath(path, stroke, ctm);
node->item.path = fz_clonepath(path);
node->stroke = fz_clonestrokestate(stroke);
fz_appenddisplaynode(user, node);
}
static void
fz_listfilltext(void *user, fz_text *text, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDFILLTEXT, ctm, colorspace, color, alpha);
node->rect = fz_boundtext(text, ctm);
node->item.text = fz_clonetext(text);
fz_appenddisplaynode(user, node);
}
static void
fz_liststroketext(void *user, fz_text *text, fz_strokestate *stroke, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDSTROKETEXT, ctm, colorspace, color, alpha);
node->rect = fz_boundtext(text, ctm);
node->item.text = fz_clonetext(text);
node->stroke = fz_clonestrokestate(stroke);
fz_appenddisplaynode(user, node);
}
static void
fz_listcliptext(void *user, fz_text *text, fz_matrix ctm, int accumulate)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDCLIPTEXT, ctm, nil, nil, 0);
node->rect = fz_boundtext(text, ctm);
node->item.text = fz_clonetext(text);
node->flag = accumulate;
fz_appenddisplaynode(user, node);
}
static void
fz_listclipstroketext(void *user, fz_text *text, fz_strokestate *stroke, fz_matrix ctm)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDCLIPSTROKETEXT, ctm, nil, nil, 0);
node->rect = fz_boundtext(text, ctm);
node->item.text = fz_clonetext(text);
node->stroke = fz_clonestrokestate(stroke);
fz_appenddisplaynode(user, node);
}
static void
fz_listignoretext(void *user, fz_text *text, fz_matrix ctm)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDIGNORETEXT, ctm, nil, nil, 0);
node->rect = fz_boundtext(text, ctm);
node->item.text = fz_clonetext(text);
fz_appenddisplaynode(user, node);
}
static void
fz_listpopclip(void *user)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDPOPCLIP, fz_identity, nil, nil, 0);
/* TODO: scan back for matching pushclip and calculate bbox of contents */
fz_appenddisplaynode(user, node);
}
static void
fz_listfillshade(void *user, fz_shade *shade, fz_matrix ctm, float alpha)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDFILLSHADE, ctm, nil, nil, alpha);
node->rect = fz_boundshade(shade, ctm);
node->item.shade = fz_keepshade(shade);
fz_appenddisplaynode(user, node);
}
static void
fz_listfillimage(void *user, fz_pixmap *image, fz_matrix ctm, float alpha)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDFILLIMAGE, ctm, nil, nil, alpha);
node->rect = fz_transformrect(ctm, fz_unitrect);
node->item.image = fz_keeppixmap(image);
fz_appenddisplaynode(user, node);
}
static void
fz_listfillimagemask(void *user, fz_pixmap *image, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDFILLIMAGEMASK, ctm, colorspace, color, alpha);
node->rect = fz_transformrect(ctm, fz_unitrect);
node->item.image = fz_keeppixmap(image);
fz_appenddisplaynode(user, node);
}
static void
fz_listclipimagemask(void *user, fz_pixmap *image, fz_matrix ctm)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDCLIPIMAGEMASK, ctm, nil, nil, 0);
node->rect = fz_transformrect(ctm, fz_unitrect);
node->item.image = fz_keeppixmap(image);
fz_appenddisplaynode(user, node);
}
static void
fz_listbeginmask(void *user, fz_rect rect, int luminosity, fz_colorspace *colorspace, float *color)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDBEGINMASK, fz_identity, colorspace, color, 0);
node->rect = rect;
node->flag = luminosity;
fz_appenddisplaynode(user, node);
}
static void
fz_listendmask(void *user)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDENDMASK, fz_identity, nil, nil, 0);
fz_appenddisplaynode(user, node);
}
static void
fz_listbegingroup(void *user, fz_rect rect, int isolated, int knockout, fz_blendmode blendmode, float alpha)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDBEGINGROUP, fz_identity, nil, nil, alpha);
node->rect = rect;
node->item.blendmode = blendmode;
node->flag |= isolated ? ISOLATED : 0;
node->flag |= knockout ? KNOCKOUT : 0;
fz_appenddisplaynode(user, node);
}
static void
fz_listendgroup(void *user)
{
fz_displaynode *node;
node = fz_newdisplaynode(FZ_CMDENDGROUP, fz_identity, nil, nil, 0);
fz_appenddisplaynode(user, node);
}
fz_device *
fz_newlistdevice(fz_displaylist *list)
{
fz_device *dev = fz_newdevice(list);
dev->fillpath = fz_listfillpath;
dev->strokepath = fz_liststrokepath;
dev->clippath = fz_listclippath;
dev->clipstrokepath = fz_listclipstrokepath;
dev->filltext = fz_listfilltext;
dev->stroketext = fz_liststroketext;
dev->cliptext = fz_listcliptext;
dev->clipstroketext = fz_listclipstroketext;
dev->ignoretext = fz_listignoretext;
dev->fillshade = fz_listfillshade;
dev->fillimage = fz_listfillimage;
dev->fillimagemask = fz_listfillimagemask;
dev->clipimagemask = fz_listclipimagemask;
dev->popclip = fz_listpopclip;
dev->beginmask = fz_listbeginmask;
dev->endmask = fz_listendmask;
dev->begingroup = fz_listbegingroup;
dev->endgroup = fz_listendgroup;
return dev;
}
fz_displaylist *
fz_newdisplaylist(void)
{
fz_displaylist *list = fz_malloc(sizeof(fz_displaylist));
list->first = nil;
list->last = nil;
return list;
}
void
fz_freedisplaylist(fz_displaylist *list)
{
fz_displaynode *node = list->first;
while (node)
{
fz_displaynode *next = node->next;
fz_freedisplaynode(node);
node = next;
}
fz_free(list);
}
void
fz_executedisplaylist(fz_displaylist *list, fz_device *dev, fz_matrix topctm)
{
fz_displaynode *node;
fz_rect bbox;
for (node = list->first; node; node = node->next)
{
fz_matrix ctm = fz_concat(node->ctm, topctm);
switch (node->cmd)
{
case FZ_CMDFILLPATH:
dev->fillpath(dev->user, node->item.path, node->flag, ctm,
node->colorspace, node->color, node->alpha);
break;
case FZ_CMDSTROKEPATH:
dev->strokepath(dev->user, node->item.path, node->stroke, ctm,
node->colorspace, node->color, node->alpha);
break;
case FZ_CMDCLIPPATH:
dev->clippath(dev->user, node->item.path, node->flag, ctm);
break;
case FZ_CMDCLIPSTROKEPATH:
dev->clipstrokepath(dev->user, node->item.path, node->stroke, ctm);
break;
case FZ_CMDFILLTEXT:
dev->filltext(dev->user, node->item.text, ctm,
node->colorspace, node->color, node->alpha);
break;
case FZ_CMDSTROKETEXT:
dev->stroketext(dev->user, node->item.text, node->stroke, ctm,
node->colorspace, node->color, node->alpha);
break;
case FZ_CMDCLIPTEXT:
dev->cliptext(dev->user, node->item.text, ctm, node->flag);
break;
case FZ_CMDCLIPSTROKETEXT:
dev->clipstroketext(dev->user, node->item.text, node->stroke, ctm);
break;
case FZ_CMDIGNORETEXT:
dev->ignoretext(dev->user, node->item.text, ctm);
break;
case FZ_CMDFILLSHADE:
dev->fillshade(dev->user, node->item.shade, ctm, node->alpha);
break;
case FZ_CMDFILLIMAGE:
dev->fillimage(dev->user, node->item.image, ctm, node->alpha);
break;
case FZ_CMDFILLIMAGEMASK:
dev->fillimagemask(dev->user, node->item.image, ctm,
node->colorspace, node->color, node->alpha);
break;
case FZ_CMDCLIPIMAGEMASK:
dev->clipimagemask(dev->user, node->item.image, ctm);
break;
case FZ_CMDPOPCLIP:
dev->popclip(dev->user);
break;
case FZ_CMDBEGINMASK:
bbox = fz_transformrect(topctm, node->rect);
dev->beginmask(dev->user, bbox, node->flag, node->colorspace, node->color);
break;
case FZ_CMDENDMASK:
dev->endmask(dev->user);
break;
case FZ_CMDBEGINGROUP:
bbox = fz_transformrect(topctm, node->rect);
dev->begingroup(dev->user, bbox,
node->flag & ISOLATED, node->flag & KNOCKOUT,
node->item.blendmode, node->alpha);
break;
case FZ_CMDENDGROUP:
dev->endgroup(dev->user);
break;
}
}
}
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