RenderedSubtitle* Renderer::Lookup(const Subtitle* s, const CSize& vs, const CRect& vr)
{
m_sra.UpdateTarget(vs, vr);
if(s->m_text.IsEmpty()) {
return NULL;
}
CRect spdrc = s->m_frame.reference == _T("video") ? vr : CRect(CPoint(0, 0), vs);
if(spdrc.IsRectEmpty()) {
return NULL;
}
RenderedSubtitle* rs = NULL;
if(m_rsc.Lookup(s->m_name, rs)) {
if(!s->m_animated && rs->m_spdrc == spdrc) {
return rs;
}
m_rsc.Invalidate(s->m_name);
}
const Style& style = s->m_text.GetHead().style;
Size scale;
scale.cx = (float)spdrc.Width() / s->m_frame.resolution.cx;
scale.cy = (float)spdrc.Height() / s->m_frame.resolution.cy;
CRect frame;
frame.left = (int)(64.0f * (spdrc.left + style.placement.margin.l * scale.cx) + 0.5);
frame.top = (int)(64.0f * (spdrc.top + style.placement.margin.t * scale.cy) + 0.5);
frame.right = (int)(64.0f * (spdrc.right - style.placement.margin.r * scale.cx) + 0.5);
frame.bottom = (int)(64.0f * (spdrc.bottom - style.placement.margin.b * scale.cy) + 0.5);
CRect clip;
if(style.placement.clip.l == -1) {
clip.left = 0;
} else {
clip.left = (int)(spdrc.left + style.placement.clip.l * scale.cx);
}
if(style.placement.clip.t == -1) {
clip.top = 0;
} else {
clip.top = (int)(spdrc.top + style.placement.clip.t * scale.cy);
}
if(style.placement.clip.r == -1) {
clip.right = vs.cx;
} else {
clip.right = (int)(spdrc.left + style.placement.clip.r * scale.cx);
}
if(style.placement.clip.b == -1) {
clip.bottom = vs.cy;
} else {
clip.bottom = (int)(spdrc.top + style.placement.clip.b * scale.cy);
}
clip.left = max(clip.left, 0);
clip.top = max(clip.top, 0);
clip.right = min(clip.right, vs.cx);
clip.bottom = min(clip.bottom, vs.cy);
scale.cx *= 64;
scale.cy *= 64;
bool vertical = s->m_direction.primary == _T("down") || s->m_direction.primary == _T("up");
// create glyph paths
WCHAR c_prev = 0, c_next;
CAutoPtrList<Glyph> glyphs;
POSITION pos = s->m_text.GetHeadPosition();
while(pos) {
const Text& t = s->m_text.GetNext(pos);
LOGFONT lf;
memset(&lf, 0, sizeof(lf));
lf.lfCharSet = DEFAULT_CHARSET;
_tcscpy_s(lf.lfFaceName, CString(t.style.font.face));
lf.lfHeight = (LONG)(t.style.font.size * scale.cy + 0.5);
lf.lfWeight = (LONG)(t.style.font.weight + 0.5);
lf.lfItalic = !!t.style.font.italic;
lf.lfUnderline = !!t.style.font.underline;
lf.lfStrikeOut = !!t.style.font.strikethrough;
lf.lfOutPrecision = OUT_TT_PRECIS;
lf.lfClipPrecision = CLIP_DEFAULT_PRECIS;
lf.lfQuality = ANTIALIASED_QUALITY;
lf.lfPitchAndFamily = DEFAULT_PITCH|FF_DONTCARE;
FontWrapper* font = m_fc.Create(m_hDC, lf);
if(!font) {
_tcscpy_s(lf.lfFaceName, _T("Arial"));
font = m_fc.Create(m_hDC, lf);
if(!font) {
ASSERT(0);
continue;
}
}
HFONT hOldFont = SelectFont(m_hDC, *font);
const TEXTMETRIC& tm = font->GetTextMetric();
for(LPCWSTR c = t.str; *c; c++) {
CAutoPtr<Glyph> g(DNew Glyph());
g->c = *c;
g->style = t.style;
g->scale = scale;
g->vertical = vertical;
g->font = font;
c_next = !c[1] && pos ? c_next = s->m_text.GetAt(pos).str[0] : c[1];
Arabic::Replace(g->c, c_prev, c_next);
c_prev = c[0];
CSize extent;
GetTextExtentPoint32W(m_hDC, &g->c, 1, &extent);
ASSERT(extent.cx >= 0 && extent.cy >= 0);
if(vertical) {
g->spacing = (int)(t.style.font.spacing * scale.cy + 0.5);
g->ascent = extent.cx / 2;
g->descent = extent.cx - g->ascent;
g->width = extent.cy;
// TESTME
if(g->c == Text::SP) {
g->width /= 2;
}
} else {
g->spacing = (int)(t.style.font.spacing * scale.cx + 0.5);
g->ascent = tm.tmAscent;
g->descent = tm.tmDescent;
g->width = extent.cx;
}
if(g->c == Text::LSEP) {
g->spacing = 0;
g->width = 0;
g->ascent /= 2;
g->descent /= 2;
} else {
GlyphPath* path = m_gpc.Create(m_hDC, font, g->c);
if(!path) {
ASSERT(0);
continue;
}
g->path = *path;
}
glyphs.AddTail(g);
}
SelectFont(m_hDC, hOldFont);
}
// break glyphs into rows
CAutoPtrList<Row> rows;
CAutoPtr<Row> row;
pos = glyphs.GetHeadPosition();
while(pos) {
CAutoPtr<Glyph> g = glyphs.GetNext(pos);
if(!row) {
row.Attach(DNew Row());
}
WCHAR c = g->c;
row->AddTail(g);
if(c == Text::LSEP || !pos) {
rows.AddTail(row);
}
}
// kerning
if(s->m_direction.primary == _T("right")) { // || s->m_direction.primary == _T("left")
for(POSITION rpos = rows.GetHeadPosition(); rpos; rows.GetNext(rpos)) {
Row* r = rows.GetAt(rpos);
POSITION gpos = r->GetHeadPosition();
while(gpos) {
Glyph* g1 = r->GetNext(gpos);
if(!gpos) {
break;
}
Glyph* g2 = r->GetAt(gpos);
if(g1->font != g2->font || !g1->style.font.kerning || !g2->style.font.kerning) {
continue;
}
if(int size = g1->font->GetKernAmount(g1->c, g2->c)) {
g2->path.MovePoints(CPoint(size, 0));
g2->width += size;
}
}
}
}
// wrap rows
if(s->m_wrap == _T("normal") || s->m_wrap == _T("even")) {
int maxwidth = abs((int)(vertical ? frame.Height() : frame.Width()));
int minwidth = 0;
for(POSITION rpos = rows.GetHeadPosition(); rpos; rows.GetNext(rpos)) {
Row* r = rows.GetAt(rpos);
POSITION brpos = NULL;
if(s->m_wrap == _T("even")) {
int fullwidth = 0;
for(POSITION gpos = r->GetHeadPosition(); gpos; r->GetNext(gpos)) {
const Glyph* g = r->GetAt(gpos);
fullwidth += g->width + g->spacing;
}
fullwidth = abs(fullwidth);
if(fullwidth > maxwidth) {
maxwidth = fullwidth / ((fullwidth / maxwidth) + 1);
minwidth = maxwidth;
}
}
int width = 0;
for(POSITION gpos = r->GetHeadPosition(); gpos; r->GetNext(gpos)) {
const Glyph* g = r->GetAt(gpos);
width += g->width + g->spacing;
if(brpos && abs(width) > maxwidth && g->c != Text::SP) {
row.Attach(DNew Row());
POSITION next = brpos;
r->GetNext(next);
do {
row->AddHead(r->GetPrev(brpos));
} while(brpos);
rows.InsertBefore(rpos, row);
while(!r->IsEmpty() && r->GetHeadPosition() != next) {
r->RemoveHeadNoReturn();
}
g = r->GetAt(gpos = next);
width = g->width + g->spacing;
}
if(abs(width) >= minwidth) {
if(g->style.linebreak == _T("char")
|| g->style.linebreak == _T("word") && g->c == Text::SP) {
brpos = gpos;
}
}
}
}
}
// trim rows
for(POSITION pos = rows.GetHeadPosition(); pos; rows.GetNext(pos)) {
Row* r = rows.GetAt(pos);
while(!r->IsEmpty() && r->GetHead()->c == Text::SP) {
r->RemoveHead();
}
while(!r->IsEmpty() && r->GetTail()->c == Text::SP) {
r->RemoveTail();
}
}
// calc fill width for each glyph
CAtlList<Glyph*> glypsh2fill;
int fill_id = 0;
int fill_width = 0;
for(POSITION pos = rows.GetHeadPosition(); pos; rows.GetNext(pos)) {
Row* r = rows.GetAt(pos);
POSITION gpos = r->GetHeadPosition();
while(gpos) {
Glyph* g = r->GetNext(gpos);
if(!glypsh2fill.IsEmpty() && fill_id && (g->style.fill.id != fill_id || !pos && !gpos)) {
int w = (int)(g->style.fill.width * fill_width + 0.5);
while(!glypsh2fill.IsEmpty()) {
Glyph* g = glypsh2fill.RemoveTail();
fill_width -= g->width;
g->fill = w - fill_width;
}
ASSERT(glypsh2fill.IsEmpty());
ASSERT(fill_width == 0);
glypsh2fill.RemoveAll();
fill_width = 0;
}
fill_id = g->style.fill.id;
if(g->style.fill.id) {
glypsh2fill.AddTail(g);
fill_width += g->width;
}
}
}
// calc row sizes and total subtitle size
CSize size(0, 0);
if(s->m_direction.secondary == _T("left") || s->m_direction.secondary == _T("up")) {
ReverseList(rows);
}
for(POSITION pos = rows.GetHeadPosition(); pos; rows.GetNext(pos)) {
Row* r = rows.GetAt(pos);
if(s->m_direction.primary == _T("left") || s->m_direction.primary == _T("up")) {
ReverseList(*r);
}
int w = 0, h = 0;
r->width = 0;
for(POSITION gpos = r->GetHeadPosition(); gpos; r->GetNext(gpos)) {
const Glyph* g = r->GetAt(gpos);
w += g->width;
if(gpos) {
w += g->spacing;
}
h = max(h, g->ascent + g->descent);
r->width += g->width;
if(gpos) {
r->width += g->spacing;
}
r->ascent = max(r->ascent, g->ascent);
r->descent = max(r->descent, g->descent);
r->border = max(r->border, g->GetBackgroundSize());
}
for(POSITION gpos = r->GetHeadPosition(); gpos; r->GetNext(gpos)) {
Glyph* g = r->GetAt(gpos);
g->row_ascent = r->ascent;
g->row_descent = r->descent;
}
if(vertical) {
size.cx += h;
size.cy = max(size.cy, w);
} else {
size.cx = max(size.cx, w);
size.cy += h;
}
}
// align rows and calc glyph positions
rs = DNew RenderedSubtitle(spdrc, clip);
CPoint p = GetAlignPoint(style.placement, scale, frame, size);
CPoint org = GetAlignPoint(style.placement, scale, frame);
// collision detection
if(!s->m_animated) {
int tlb = !rows.IsEmpty() ? rows.GetHead()->border : 0;
int brb = !rows.IsEmpty() ? rows.GetTail()->border : 0;
CRect r(p, size);
m_sra.GetRect(r, s, style.placement.align, tlb, brb);
org += r.TopLeft() - p;
p = r.TopLeft();
}
CRect subrect(p, size);
// continue positioning
for(POSITION pos = rows.GetHeadPosition(); pos; rows.GetNext(pos)) {
Row* r = rows.GetAt(pos);
CSize rsize;
rsize.cx = rsize.cy = r->width;
if(vertical) {
p.y = GetAlignPoint(style.placement, scale, frame, rsize).y;
for(POSITION gpos = r->GetHeadPosition(); gpos; r->GetNext(gpos)) {
CAutoPtr<Glyph> g = r->GetAt(gpos);
g->tl.x = p.x + (int)(g->style.placement.offset.x * scale.cx + 0.5) + r->ascent - g->ascent;
g->tl.y = p.y + (int)(g->style.placement.offset.y * scale.cy + 0.5);
p.y += g->width + g->spacing;
rs->m_glyphs.AddTail(g);
}
p.x += r->ascent + r->descent;
} else {
p.x = GetAlignPoint(style.placement, scale, frame, rsize).x;
for(POSITION gpos = r->GetHeadPosition(); gpos; r->GetNext(gpos)) {
CAutoPtr<Glyph> g = r->GetAt(gpos);
g->tl.x = p.x + (int)(g->style.placement.offset.x * scale.cx + 0.5);
g->tl.y = p.y + (int)(g->style.placement.offset.y * scale.cy + 0.5) + r->ascent - g->ascent;
p.x += g->width + g->spacing;
rs->m_glyphs.AddTail(g);
}
p.y += r->ascent + r->descent;
}
}
// bkg, precalc style.placement.path, transform
pos = rs->m_glyphs.GetHeadPosition();
while(pos) {
Glyph* g = rs->m_glyphs.GetNext(pos);
g->CreateBkg();
g->CreateSplineCoeffs(spdrc);
g->Transform(org, subrect);
}
// merge glyphs (TODO: merge 'fill' too)
Glyph* g0 = NULL;
pos = rs->m_glyphs.GetHeadPosition();
while(pos) {
POSITION cur = pos;
Glyph* g = rs->m_glyphs.GetNext(pos);
CRect r = g->bbox + g->tl;
int size = (int)(g->GetBackgroundSize() + 0.5);
int depth = (int)(g->GetShadowDepth() + 0.5);
r.InflateRect(size, size);
r.InflateRect(depth, depth);
r.left >>= 6;
r.top >>= 6;
r.right = (r.right + 32) >> 6;
r.bottom = (r.bottom + 32) >> 6;
if((r & clip).IsRectEmpty()) { // clip
rs->m_glyphs.RemoveAt(cur);
} else if(g0 && g0->style.IsSimilar(g->style)) { // append
CPoint o = g->tl - g0->tl;
g->path.MovePoints(o);
g0->path.types.Append(g->path.types);
g0->path.points.Append(g->path.points);
g->path_bkg.MovePoints(o);
g0->path_bkg.types.Append(g->path_bkg.types);
g0->path_bkg.points.Append(g->path_bkg.points);
g0->bbox |= g->bbox + o;
rs->m_glyphs.RemoveAt(cur);
} else { // leave alone
g0 = g;
}
}
// rasterize
pos = rs->m_glyphs.GetHeadPosition();
while(pos) {
rs->m_glyphs.GetNext(pos)->Rasterize();
}
// cache
m_rsc.Add(s->m_name, rs);
m_fc.Flush();
return rs;
}
