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fvmetrics.c
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fvmetrics.c
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/* Copyright (C) 2000-2012 by George Williams */
/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "fontforgevw.h"
#include <math.h>
#include <ustring.h>
#include "fvmetrics.h"
static void DoChar(SplineChar *sc,CreateWidthData *wd, FontViewBase *fv,
BDFChar *bc) {
real transform[6];
DBounds bb;
IBounds ib;
int width=0;
BVTFunc bvts[2];
BDFFont *bdf;
RefChar *r = HasUseMyMetrics(sc,fv->active_layer);
/* Can't change the horizontal or vertical advance if there's a "use my metrics" bit set */
if ( r!=NULL && wd->wtype != wt_lbearing )
return;
if ( wd->wtype == wt_width ) {
if ( wd->type==st_set )
width = wd->setto;
else if ( wd->type == st_incr )
width = sc->width + wd->increment;
else
width = sc->width * wd->scale/100;
sc->widthset = true;
if ( width!=sc->width ) {
SCPreserveWidth(sc);
SCSynchronizeWidth(sc,width,sc->width,fv);
}
} else if ( wd->wtype == wt_lbearing ) {
transform[0] = transform[3] = 1.0;
transform[1] = transform[2] = transform[5] = 0;
bvts[1].func = bvt_none;
bvts[0].func = bvt_transmove; bvts[0].y = 0;
if ( bc==NULL ) {
SplineCharFindBounds(sc,&bb);
if ( wd->type==st_set )
transform[4] = wd->setto-bb.minx;
else if ( wd->type == st_incr )
transform[4] = wd->increment;
else
transform[4] = bb.minx*wd->scale/100 - bb.minx;
} else {
double scale = (fv->sf->ascent+fv->sf->descent)/(double) (fv->active_bitmap->pixelsize);
BDFCharFindBounds(bc,&ib);
if ( wd->type==st_set )
transform[4] = wd->setto-ib.minx*scale;
else if ( wd->type == st_incr )
transform[4] = wd->increment;
else
transform[4] = scale*ib.minx*wd->scale/100 - ib.minx;
}
if ( transform[4]!=0 )
{
FVTrans(fv,sc,transform,NULL,fvt_dontmovewidth | fvt_alllayers );
bvts[0].x = transform[4];
for ( bdf = fv->sf->bitmaps; bdf!=NULL; bdf=bdf->next ) if ( bdf->glyphs[sc->orig_pos]!=NULL )
BCTrans(bdf,bdf->glyphs[sc->orig_pos],bvts,fv);
}
return;
} else if ( wd->wtype == wt_rbearing ) {
if ( bc==NULL ) {
SplineCharFindBounds(sc,&bb);
if ( wd->type==st_set )
width = bb.maxx + wd->setto;
else if ( wd->type == st_incr )
width = sc->width+wd->increment;
else
width = (sc->width-bb.maxx) * wd->scale/100 + bb.maxx;
} else {
double scale = (fv->sf->ascent+fv->sf->descent)/(double) (fv->active_bitmap->pixelsize);
BDFCharFindBounds(bc,&ib);
++ib.maxx;
if ( wd->type==st_set )
width = rint(ib.maxx*scale + wd->setto);
else if ( wd->type == st_incr )
width = rint(sc->width+wd->increment);
else
width = rint(scale * (bc->width-ib.maxx) * wd->scale/100 + ib.maxx*scale);
}
if ( width!=sc->width ) {
SCPreserveWidth(sc);
SCSynchronizeWidth(sc,width,sc->width,fv);
}
} else if ( wd->wtype == wt_bearings ) {
transform[0] = transform[3] = 1.0;
transform[1] = transform[2] = transform[5] = 0;
bvts[1].func = bvt_none;
bvts[0].func = bvt_transmove; bvts[0].y = 0;
if ( bc==NULL ) {
SplineCharFindBounds(sc,&bb);
if ( wd->type==st_set ) {
transform[4] = wd->setto-bb.minx;
width = bb.maxx-bb.minx + 2*wd->setto;
} else if ( wd->type == st_incr ) {
transform[4] = wd->increment;
width = sc->width + 2*wd->increment;
} else {
transform[4] = bb.minx*wd->scale/100 - bb.minx;
width = bb.maxx-bb.minx +
(bb.minx + (sc->width-bb.maxx))*wd->scale/100;
}
} else {
double scale = (fv->sf->ascent+fv->sf->descent)/(double) (fv->active_bitmap->pixelsize);
BDFCharFindBounds(bc,&ib);
++ib.maxx;
if ( wd->type==st_set ) {
transform[4] = wd->setto-ib.minx;
width = (ib.maxx-ib.minx + 2*wd->setto);
} else if ( wd->type == st_incr ) {
transform[4] = wd->increment;
width = sc->width + 2*wd->increment;
} else {
transform[4] = ib.minx*wd->scale/100 - ib.minx;
width = ib.maxx-ib.minx +
(ib.minx + (bc->width-ib.maxx))*wd->scale/100;
}
transform[4] *= scale;
width = rint(width*scale);
}
if ( width!=sc->width ) {
SCPreserveWidth(sc);
SCSynchronizeWidth(sc,width,sc->width,fv);
}
if ( transform[4]!=0 ) {
FVTrans(fv,sc,transform,NULL, fvt_dontmovewidth | fvt_alllayers );
bvts[0].x = transform[4];
for ( bdf = fv->sf->bitmaps; bdf!=NULL; bdf=bdf->next ) if ( bdf->glyphs[sc->orig_pos]!=NULL )
BCTrans(bdf,bdf->glyphs[sc->orig_pos],bvts,fv);
}
return;
} else {
if ( wd->type==st_set )
width = wd->setto;
else if ( wd->type == st_incr )
width = sc->vwidth + wd->increment;
else
width = sc->vwidth * wd->scale/100;
if ( width!=sc->vwidth ) {
SCPreserveVWidth(sc);
sc->vwidth = width;
}
}
SCCharChangedUpdate(sc,fv->active_layer);
}
void FVDoit(CreateWidthData *wd) {
FontViewBase *fv = (FontViewBase *) (wd->_fv);
int i;
BDFChar *bc;
if ( fv->sf->onlybitmaps && fv->active_bitmap!=NULL && fv->sf->bitmaps!=NULL ) {
double scale = (fv->sf->ascent+fv->sf->descent)/(double) fv->active_bitmap->pixelsize;
wd->setto *= scale;
wd->increment *= scale;
}
bc = NULL;
for ( i=0; i<fv->map->enccount; ++i ) if ( fv->selected[i] ) {
SplineChar *sc;
sc = SFMakeChar(fv->sf,fv->map,i);
if ( fv->sf->onlybitmaps && fv->sf->bitmaps!=NULL )
if ( fv->active_bitmap!=NULL )
bc = BDFMakeChar(fv->active_bitmap,fv->map,i);
DoChar(sc,wd,fv,bc);
}
wd->done = true;
}
void CVDoit(CreateWidthData *wd) {
CharView *cv = (CharView *) (wd->_fv);
DoChar(cv->b.sc,wd,(FontViewBase *) (cv->b.fv),NULL);
wd->done = true;
}
void GenericVDoit(CreateWidthData *wd) {
FontViewBase* fv = (FontViewBase*)wd->_fv;
SplineChar* sc = (SplineChar*)wd->_sc;
DoChar(sc,wd,fv,NULL);
wd->done = true;
}
void FVSetWidthScript(FontViewBase *fv,enum widthtype wtype,int val,int incr) {
CreateWidthData wd;
memset(&wd,0,sizeof(wd));
wd._fv = fv;
wd.doit = FVDoit;
wd.setto = wd.increment = wd.scale = val;
wd.type = incr==0 ? st_set : incr==2 ? st_scale : st_incr;
wd.wtype = wtype;
FVDoit(&wd);
}