int
SWFText_getScaledStringWidth(SWFText text, const char *string)
{
SWFFont font;
int height;
unsigned short* widestr;
int len = strlen(string);
int n, ret;
if(text->currentRecord == NULL)
return -1;
height = text->currentRecord->height;
widestr = (unsigned short *)malloc(2 * len);
/* If malloc failed, return -1 to signify this */
if (NULL == text)
return -1;
for(n = 0 ; n < len ; n++)
widestr[n] = (unsigned char)string[n];
if ( text->currentRecord->isResolved )
font = SWFFontCharacter_getFont(text->currentRecord->font.fontchar);
else
font = text->currentRecord->font.font;
ret = SWFFont_getScaledWideStringWidth(font, widestr, len) * height / 1024;
free(widestr);
return ret;
}
static inline int checkSWFFontCharacter(SWFFontCharacter fc)
{
int font_flags;
int nGlyphs;
SWFFont font = SWFFontCharacter_getFont(fc);
font_flags = SWFFont_getFlags(font);
nGlyphs = SWFFontCharacter_getNGlyphs(fc);
if((font_flags & SWF_FONT_HASLAYOUT) == 0 && nGlyphs == 0)
return -1;
return 0;
}
static void
SWFTextRecord_computeAdvances(SWFTextRecord textRecord)
{
int i;
int len = textRecord->strlen;
unsigned short* widestring = textRecord->string;
unsigned short glyph;
SWFFontCharacter fontchar = textRecord->font.fontchar;
SWFFont font = SWFFontCharacter_getFont(fontchar);
if(!len) return; // do not try to calculate 1st char of null string
/* compute advances (spacing) from spacing, advance and kern table */
if ( textRecord->advance == NULL )
{
textRecord->advance = (int*)malloc(sizeof(int) * len);
memset(textRecord->advance, 0, sizeof(int) * len);
}
glyph = SWFFontCharacter_getGlyphCode(fontchar, widestring[0]);
for ( i=0; i<len; ++i )
{
int adv;
unsigned short nextglyph;
adv = SWFFont_getCharacterAdvance(font, (unsigned short)glyph);
adv += textRecord->spacing;
/* get kerning from font's kern table */
if ( i < len-1 )
{ nextglyph = SWFFontCharacter_getGlyphCode(fontchar, widestring[i+1]);
adv += SWFFont_getCharacterKern(font, glyph, nextglyph);
glyph = nextglyph;
}
if ( textRecord->advance != NULL )
adv += textRecord->advance[i];
textRecord->advance[i] = adv * textRecord->height / 1024;
textRecord->nAdvanceBits = max(textRecord->nAdvanceBits,
SWFOutput_numSBits(textRecord->advance[i]));
}
}
/*
* Adds a font to a movie.
* retursn a SWFFontCharacter object
*/
SWFFontCharacter
SWFMovie_addFont(SWFMovie movie, SWFFont font)
{
SWFFontCharacter fontchar;
int i;
for( i = 0 ; i < movie->nFonts ; i++ )
{ fontchar = movie->fonts[i];
if ( SWFFontCharacter_getFont(fontchar) == font )
return fontchar;
}
movie->fonts = (SWFFontCharacter*)realloc(movie->fonts,
sizeof(SWFFontCharacter) * (movie->nFonts + 1));
fontchar = newSWFFontCharacter(font);
movie->fonts[movie->nFonts++] = fontchar;
SWFMovie_addBlock(movie, (SWFBlock)fontchar);
return fontchar;
}
int
SWFText_getScaledWideStringWidth(SWFText text, const unsigned short *string)
{
SWFFont font;
int height = text->currentRecord->height;
int len;
for(len = 0 ; *string ; len++)
;
if ( text->currentRecord->isResolved )
font = SWFFontCharacter_getFont(text->currentRecord->font.fontchar);
else
font = text->currentRecord->font.font;
if ( text->currentRecord->isBrowserFont )
return 0;
else
return SWFFont_getScaledWideStringWidth(font, string, len) * height / 1024;
}
int
SWFText_getScaledUTF8StringWidth(SWFText text, const char *string)
{
SWFFont font;
int height = text->currentRecord->height;
unsigned short* widestr;
int len, ret;
len = UTF8ExpandString(string, &widestr);
if ( text->currentRecord->isResolved )
font = SWFFontCharacter_getFont(text->currentRecord->font.fontchar);
else
font = text->currentRecord->font.font;
if ( text->currentRecord->isBrowserFont )
ret = 0;
else
ret = SWFFont_getScaledWideStringWidth(font, widestr, len) * height / 1024;
free(widestr);
return ret;
}
void
SWFText_resolveCodes(SWFText text)
{
SWFTextRecord textRecord, oldRecord;
SWFOutput out = text->out;
int nGlyphBits = 0;
int len, i;
int curX = 0, curY = 0, curH = 0;
textRecord = text->initialRecord;
while ( textRecord != NULL )
{
SWFTextRecord_computeAdvances(textRecord);
text->nAdvanceBits = max(text->nAdvanceBits, textRecord->nAdvanceBits);
if ( textRecord->flags & SWF_TEXT_HAS_FONT )
{
int fontGlyphs = SWFFontCharacter_getNGlyphs(textRecord->font.fontchar);
nGlyphBits = max(nGlyphBits, SWFOutput_numBits(fontGlyphs-1));
}
textRecord = textRecord->next;
}
textRecord = text->initialRecord;
while ( textRecord != NULL )
{
SWFFontCharacter fontchar = NULL;
SWFFont font = NULL;
oldRecord = textRecord;
if ( textRecord->string == NULL || textRecord->strlen == 0 )
{
textRecord = textRecord->next;
destroySWFTextRecord(oldRecord);
continue;
}
SWFOutput_byteAlign(out);
/* Raff says the spec lies- there's always a change record, even if
it's empty, and the string record length is the full 8 bits. */
SWFOutput_writeUInt8(out, textRecord->flags | SWF_TEXT_STATE_CHANGE);
if ( textRecord->flags & SWF_TEXT_HAS_FONT )
SWFOutput_writeUInt16(out, CHARACTERID(textRecord->font.fontchar));
if ( textRecord->flags & SWF_TEXT_HAS_COLOR )
{
SWFOutput_writeUInt8(out, textRecord->r);
SWFOutput_writeUInt8(out, textRecord->g);
SWFOutput_writeUInt8(out, textRecord->b);
if ( BLOCK(text)->type == SWF_DEFINETEXT2 )
SWFOutput_writeUInt8(out, textRecord->a);
}
if ( textRecord->flags & SWF_TEXT_HAS_X )
{
SWFOutput_writeUInt16(out, textRecord->x);
curX = textRecord->x;
}
if ( textRecord->flags & SWF_TEXT_HAS_Y )
{
SWFOutput_writeUInt16(out, textRecord->y);
curY = textRecord->y;
}
if ( textRecord->flags & SWF_TEXT_HAS_FONT )
{
SWFOutput_writeUInt16(out, textRecord->height);
curH = textRecord->height;
}
/* record type 0: string data */
len = textRecord->strlen;
if ( len >= 256 )
SWF_error("Found text record >= 256 characters!");
SWFOutput_writeUInt8(out, len);
fontchar = textRecord->font.fontchar;
font = SWFFontCharacter_getFont(fontchar);
if ( font == NULL )
SWF_error("Couldn't find font");
for ( i=0; i<len; ++i )
{
SWFRect glyphBounds;
int minX, maxX, minY, maxY;
unsigned short font_glyphcode =
SWFFont_findGlyphCode(font, textRecord->string[i]);
glyphBounds = SWFFont_getGlyphBounds(font,font_glyphcode);
SWFRect_getBounds(glyphBounds, &minX, &maxX, &minY, &maxY);
int fontchar_glyphcode =
SWFFontCharacter_findGlyphCode(fontchar, textRecord->string[i]);
if (fontchar_glyphcode < 0) {
SWF_error("SWFText_resolveCodes: no suitable glyph available (in dumped font)");
}
SWFOutput_writeBits(out, (unsigned short) fontchar_glyphcode, nGlyphBits);
SWFOutput_writeBits(out, textRecord->advance[i], text->nAdvanceBits);
if ( CHARACTER(text)->bounds )
{
SWFRect_includePoint(CHARACTER(text)->bounds, curX + minX * curH / 1024,
curY + minY * curH / 1024, 0);
SWFRect_includePoint(CHARACTER(text)->bounds, curX + maxX * curH / 1024,
curY + maxY * curH / 1024, 0);
}
else
{
CHARACTER(text)->bounds = newSWFRect(curX + minX * curH /1024,
curX + maxX * curH /1024, curY + minY * curH /1024,
curY + maxY * curH /1024);
}
if ( textRecord->advance != NULL )
curX += textRecord->advance[i];
}
textRecord = textRecord->next;
destroySWFTextRecord(oldRecord);
}
SWFOutput_writeUInt8(out, 0); /* end text records */
text->nGlyphBits = nGlyphBits;
text->initialRecord = NULL;
text->currentRecord = NULL;
}
void
SWFText_resolveCodes(SWFText text)
{
SWFTextRecord textRecord, oldRecord;
SWFOutput out = text->out;
int nGlyphBits = 0;
int len, i;
int curX = 0, curY = 0, curH = 0;
textRecord = text->initialRecord;
while ( textRecord != NULL )
{
SWFTextRecord_computeAdvances(textRecord);
text->nAdvanceBits = max(text->nAdvanceBits, textRecord->nAdvanceBits);
if ( textRecord->flags & SWF_TEXT_HAS_FONT )
{
if ( textRecord->isBrowserFont )
{
/* XXX - assume browser fonts have 8bit glyph table? */
nGlyphBits = max(nGlyphBits, 8);
}
else
{
int fontGlyphs = SWFFontCharacter_getNGlyphs(textRecord->font.fontchar);
nGlyphBits = max(nGlyphBits, SWFOutput_numBits(fontGlyphs-1));
}
}
textRecord = textRecord->next;
}
textRecord = text->initialRecord;
while ( textRecord != NULL )
{
oldRecord = textRecord;
if ( textRecord->string == NULL || textRecord->strlen == 0 )
{
textRecord = textRecord->next;
destroySWFTextRecord(oldRecord);
continue;
}
SWFOutput_byteAlign(out);
/* Raff says the spec lies- there's always a change record, even if
it's empty, and the string record length is the full 8 bits. */
SWFOutput_writeUInt8(out, textRecord->flags | SWF_TEXT_STATE_CHANGE);
if ( textRecord->flags & SWF_TEXT_HAS_FONT )
{
if ( textRecord->isBrowserFont )
SWFOutput_writeUInt16(out, CHARACTERID(textRecord->font.browserFont));
else
SWFOutput_writeUInt16(out, CHARACTERID(textRecord->font.fontchar));
}
if ( textRecord->flags & SWF_TEXT_HAS_COLOR )
{
SWFOutput_writeUInt8(out, textRecord->r);
SWFOutput_writeUInt8(out, textRecord->g);
SWFOutput_writeUInt8(out, textRecord->b);
if ( BLOCK(text)->type == SWF_DEFINETEXT2 )
SWFOutput_writeUInt8(out, textRecord->a);
}
if ( textRecord->flags & SWF_TEXT_HAS_X )
{
SWFOutput_writeUInt16(out, textRecord->x);
curX = textRecord->x;
}
if ( textRecord->flags & SWF_TEXT_HAS_Y )
{
SWFOutput_writeUInt16(out, textRecord->y);
curY = textRecord->y;
}
if ( textRecord->flags & SWF_TEXT_HAS_FONT )
{
SWFOutput_writeUInt16(out, textRecord->height);
curH = textRecord->height;
}
/* record type 0: string data */
len = textRecord->strlen;
if ( len >= 256 )
SWF_error("Found text record >= 256 characters!");
SWFOutput_writeUInt8(out, len);
/* XXX - er, browser fonts in text objects crash the player..
Maybe because there's no definefontinfo block? */
if ( textRecord->isBrowserFont )
{
for ( i=0; i<len; ++i )
{
SWFOutput_writeBits(out, textRecord->string[i], nGlyphBits);
SWFOutput_writeBits(out, textRecord->advance[i], text->nAdvanceBits);
/* XXX - fudging the text character bounds since we don't
have font metrics */
if ( CHARACTER(text)->bounds )
{
SWFRect_includePoint(CHARACTER(text)->bounds, curX, curY, 0);
SWFRect_includePoint(CHARACTER(text)->bounds,
curX + curH, curY + curH, 0);
}
else
{
CHARACTER(text)->bounds =
newSWFRect(curX, curX + curH, curY, curY + curH);
}
curX += curH;
}
}
else
{
SWFFontCharacter fontchar = textRecord->font.fontchar;
SWFFont font = SWFFontCharacter_getFont(fontchar);
if ( font == NULL )
SWF_error("Couldn't find font");
for ( i=0; i<len; ++i )
{
SWFRect glyphBounds;
int minX, maxX, minY, maxY;
unsigned short code =
SWFFontCharacter_getGlyphCode(fontchar, textRecord->string[i]);
glyphBounds = SWFFont_getGlyphBounds(font, code);
SWFRect_getBounds(glyphBounds, &minX, &maxX, &minY, &maxY);
SWFOutput_writeBits(out, textRecord->string[i], nGlyphBits);
SWFOutput_writeBits(out, textRecord->advance[i], text->nAdvanceBits);
if ( CHARACTER(text)->bounds )
{
SWFRect_includePoint(CHARACTER(text)->bounds,
curX + minX * curH / 1024,
curY + minY * curH / 1024, 0);
SWFRect_includePoint(CHARACTER(text)->bounds,
curX + maxX * curH / 1024,
curY + maxY * curH / 1024, 0);
}
else
{
CHARACTER(text)->bounds =
newSWFRect(curX + minX * curH /1024, curX + maxX * curH /1024,
curY + minY * curH /1024, curY + maxY * curH /1024);
}
if ( textRecord->advance != NULL )
curX += textRecord->advance[i];
}
}
textRecord = textRecord->next;
destroySWFTextRecord(oldRecord);
}
SWFOutput_writeUInt8(out, 0); /* end text records */
text->nGlyphBits = nGlyphBits;
text->initialRecord = NULL;
text->currentRecord = NULL;
}
