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// swfdraw.c
#include "../rfxswf.h"
typedef struct _SWFSHAPEDRAWER
{
SHAPE*shape;
TAG*tag;
int tagfree;
SCOORD firstx;
SCOORD firsty;
SCOORD lastx;
SCOORD lasty;
SRECT bbox;
char isfinished;
} SWFSHAPEDRAWER;
static void swf_ShapeDrawerSetLineStyle(drawer_t*draw, void*style);
static void swf_ShapeDrawerSetFillStyle(drawer_t*draw, void*style);
static void swf_ShapeDrawerMoveTo(drawer_t*draw, FPOINT * to);
static void swf_ShapeDrawerLineTo(drawer_t*draw, FPOINT * to);
static void swf_ShapeDrawerSplineTo(drawer_t*draw, FPOINT * c1, FPOINT* to);
static void swf_ShapeDrawerFinish(drawer_t*draw);
static void swf_ShapeDrawerClear(drawer_t*draw);
static void swf_ShapeDrawerInit(drawer_t*draw, TAG*tag, int fillstylebits, int linestylebits)
{
SWFSHAPEDRAWER*sdraw = (SWFSHAPEDRAWER*)rfx_calloc(sizeof(SWFSHAPEDRAWER));
draw->internal = sdraw;
draw->setLineStyle = swf_ShapeDrawerSetLineStyle;
draw->setFillStyle = swf_ShapeDrawerSetFillStyle;
draw->moveTo = swf_ShapeDrawerMoveTo;
draw->lineTo = swf_ShapeDrawerLineTo;
draw->splineTo = swf_ShapeDrawerSplineTo;
draw->finish = swf_ShapeDrawerFinish;
draw->dealloc = swf_ShapeDrawerClear;
sdraw->tagfree = 0;
if(tag == 0) {
tag = swf_InsertTag(0, ST_DEFINESHAPE);
sdraw->tagfree = 1;
}
sdraw->tag = tag;
swf_ShapeNew(&sdraw->shape);
draw->pos.x = 0;
draw->pos.y = 0;
swf_SetU8(sdraw->tag,0);
sdraw->shape->bits.fill = fillstylebits;
sdraw->shape->bits.line = linestylebits;
sdraw->bbox.xmin = sdraw->bbox.ymin = SCOORD_MAX;
sdraw->bbox.xmax = sdraw->bbox.ymax = SCOORD_MIN;
sdraw->isfinished = 0;
swf_ShapeSetStyle(sdraw->tag,sdraw->shape,linestylebits?1:0,fillstylebits?1:0,0/*?*/);
}
void swf_Shape10DrawerInit(drawer_t*draw, TAG*tag)
{
swf_ShapeDrawerInit(draw, tag, 0, 1);
}
void swf_Shape01DrawerInit(drawer_t*draw, TAG*tag)
{
swf_ShapeDrawerInit(draw, tag, 1, 0);
}
void swf_Shape11DrawerInit(drawer_t*draw, TAG*tag)
{
swf_ShapeDrawerInit(draw, tag, 1, 1);
}
static void swf_ShapeDrawerSetLineStyle(drawer_t*draw, void*style)
{
SWFSHAPEDRAWER*sdraw = (SWFSHAPEDRAWER*)draw->internal;
}
static void swf_ShapeDrawerSetFillStyle(drawer_t*draw, void*style)
{
SWFSHAPEDRAWER*sdraw = (SWFSHAPEDRAWER*)draw->internal;
}
static void fixEndPoint(drawer_t*draw)
{
SWFSHAPEDRAWER*sdraw = (SWFSHAPEDRAWER*)draw->internal;
if( sdraw->firstx != sdraw->lastx
|| sdraw->firsty != sdraw->lasty) {
/* fix non-closing shapes */
FPOINT to;
to.x = sdraw->firstx/20.0;
to.y = sdraw->firsty/20.0;
if(sdraw->shape->bits.fill) // do this only if the shape is filled
draw->lineTo(draw, &to);
}
}
static void swf_ShapeDrawerMoveTo(drawer_t*draw, FPOINT * to)
{
SWFSHAPEDRAWER*sdraw = (SWFSHAPEDRAWER*)draw->internal;
int x = floor(to->x*20);
int y = floor(to->y*20);
/* Flash will ignore a moveto (0,0) in glyphs. Hence, we map
all (0,0)s to (0.05,0)s in moveto,lineto and splineto. */
if(!x&&!y)
x++;
/* we need to write moveto always- it
might be that it signals the end of a polygon, otherwise
we would end up connecting two polygons which should
be seperate
TODO: check if the last operation was a moveTo- if
yes we *can* skip it.
*/
//if(sdraw->lastx != x || sdraw->lasty != y) {
fixEndPoint(draw);
swf_ShapeSetMove(sdraw->tag,sdraw->shape,x,y);
sdraw->firstx = sdraw->lastx = x;
sdraw->firsty = sdraw->lasty = y;
draw->pos = *to;
//}
}
static void swf_ShapeDrawerLineTo(drawer_t*draw, FPOINT * to)
{
SWFSHAPEDRAWER*sdraw = (SWFSHAPEDRAWER*)draw->internal;
int x = floor(to->x*20);
int y = floor(to->y*20);
if(!x&&!y)
x++;
if(sdraw->lastx < sdraw->bbox.xmin) sdraw->bbox.xmin = sdraw->lastx;
if(sdraw->lasty < sdraw->bbox.ymin) sdraw->bbox.ymin = sdraw->lasty;
if(sdraw->lastx > sdraw->bbox.xmax) sdraw->bbox.xmax = sdraw->lastx;
if(sdraw->lasty > sdraw->bbox.ymax) sdraw->bbox.ymax = sdraw->lasty;
if(x < sdraw->bbox.xmin) sdraw->bbox.xmin = x;
if(y < sdraw->bbox.ymin) sdraw->bbox.ymin = y;
if(x > sdraw->bbox.xmax) sdraw->bbox.xmax = x;
if(y > sdraw->bbox.ymax) sdraw->bbox.ymax = y;
swf_ShapeSetLine(sdraw->tag,sdraw->shape,x-sdraw->lastx,y-sdraw->lasty);
sdraw->lastx = x;
sdraw->lasty = y;
draw->pos = *to;
}
static void swf_ShapeDrawerSplineTo(drawer_t*draw, FPOINT * c1, FPOINT* to)
{
SWFSHAPEDRAWER*sdraw = (SWFSHAPEDRAWER*)draw->internal;
int tx = floor(c1->x*20);
int ty = floor(c1->y*20);
int x = floor(to->x*20);
int y = floor(to->y*20);
if(!x&&!y)
x++;
if(sdraw->lastx < sdraw->bbox.xmin) sdraw->bbox.xmin = sdraw->lastx;
if(sdraw->lasty < sdraw->bbox.ymin) sdraw->bbox.ymin = sdraw->lasty;
if(sdraw->lastx > sdraw->bbox.xmax) sdraw->bbox.xmax = sdraw->lastx;
if(sdraw->lasty > sdraw->bbox.ymax) sdraw->bbox.ymax = sdraw->lasty;
if(x < sdraw->bbox.xmin) sdraw->bbox.xmin = x;
if(y < sdraw->bbox.ymin) sdraw->bbox.ymin = y;
if(x > sdraw->bbox.xmax) sdraw->bbox.xmax = x;
if(y > sdraw->bbox.ymax) sdraw->bbox.ymax = y;
if(tx < sdraw->bbox.xmin) sdraw->bbox.xmin = tx;
if(ty < sdraw->bbox.ymin) sdraw->bbox.ymin = ty;
if(tx > sdraw->bbox.xmax) sdraw->bbox.xmax = tx;
if(ty > sdraw->bbox.ymax) sdraw->bbox.ymax = ty;
swf_ShapeSetCurve(sdraw->tag,sdraw->shape, tx-sdraw->lastx,ty-sdraw->lasty, x-tx,y-ty);
sdraw->lastx = x;
sdraw->lasty = y;
draw->pos = *to;
}
static void swf_ShapeDrawerFinish(drawer_t*draw)
{
SWFSHAPEDRAWER*sdraw = (SWFSHAPEDRAWER*)draw->internal;
if(sdraw->isfinished)
return;
fixEndPoint(draw);
if(sdraw->bbox.xmin == SCOORD_MAX) {
/* no points at all -> empty bounding box */
sdraw->bbox.xmin = sdraw->bbox.ymin =
sdraw->bbox.xmax = sdraw->bbox.ymax = 0;
}
sdraw->isfinished = 1;
swf_ShapeSetEnd(sdraw->tag);
}
static void swf_ShapeDrawerClear(drawer_t*draw)
{
SWFSHAPEDRAWER*sdraw = (SWFSHAPEDRAWER*)draw->internal;
if(sdraw->tagfree) {
swf_DeleteTag(0, sdraw->tag);
sdraw->tag = 0;
}
swf_ShapeFree(sdraw->shape);
sdraw->shape = 0;
rfx_free(draw->internal);
draw->internal = 0;
}
SRECT swf_ShapeDrawerGetBBox(drawer_t*draw)
{
SWFSHAPEDRAWER*sdraw = (SWFSHAPEDRAWER*)draw->internal;
return sdraw->bbox;
}
SHAPE* swf_ShapeDrawerToShape(drawer_t*draw)
{
SWFSHAPEDRAWER*sdraw = (SWFSHAPEDRAWER*)draw->internal;
SHAPE* shape = (SHAPE*)rfx_alloc(sizeof(SHAPE));
if(!sdraw->isfinished) {
fprintf(stderr, "Warning: you should Finish() your drawer before calling DrawerToShape");
swf_ShapeDrawerFinish(draw);
}
memcpy(shape, sdraw->shape, sizeof(SHAPE));
shape->bitlen = (sdraw->tag->len-1)*8;
shape->data = (U8*)rfx_alloc(sdraw->tag->len-1);
memcpy(shape->data, &sdraw->tag->data[1], sdraw->tag->len-1);
return shape;
}
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