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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /gfx/graphite2/src/Slot.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'gfx/graphite2/src/Slot.cpp')
-rw-r--r--gfx/graphite2/src/Slot.cpp535
1 files changed, 535 insertions, 0 deletions
diff --git a/gfx/graphite2/src/Slot.cpp b/gfx/graphite2/src/Slot.cpp
new file mode 100644
index 000000000..4227327c4
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+++ b/gfx/graphite2/src/Slot.cpp
@@ -0,0 +1,535 @@
+/* GRAPHITE2 LICENSING
+
+ Copyright 2010, SIL International
+ All rights reserved.
+
+ This library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2.1 of License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should also have received a copy of the GNU Lesser General Public
+ License along with this library in the file named "LICENSE".
+ If not, write to the Free Software Foundation, 51 Franklin Street,
+ Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
+ internet at http://www.fsf.org/licenses/lgpl.html.
+
+Alternatively, the contents of this file may be used under the terms of the
+Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
+License, as published by the Free Software Foundation, either version 2
+of the License or (at your option) any later version.
+*/
+#include "inc/Segment.h"
+#include "inc/Slot.h"
+#include "inc/Silf.h"
+#include "inc/CharInfo.h"
+#include "inc/Rule.h"
+#include "inc/Collider.h"
+
+
+using namespace graphite2;
+
+Slot::Slot(int16 *user_attrs) :
+ m_next(NULL), m_prev(NULL),
+ m_glyphid(0), m_realglyphid(0), m_original(0), m_before(0), m_after(0),
+ m_index(0), m_parent(NULL), m_child(NULL), m_sibling(NULL),
+ m_position(0, 0), m_shift(0, 0), m_advance(0, 0),
+ m_attach(0, 0), m_with(0, 0), m_just(0.),
+ m_flags(0), m_attLevel(0), m_bidiCls(-1), m_bidiLevel(0),
+ m_userAttr(user_attrs), m_justs(NULL)
+{
+}
+
+// take care, this does not copy any of the GrSlot pointer fields
+void Slot::set(const Slot & orig, int charOffset, size_t sizeAttr, size_t justLevels, size_t numChars)
+{
+ // leave m_next and m_prev unchanged
+ m_glyphid = orig.m_glyphid;
+ m_realglyphid = orig.m_realglyphid;
+ m_original = orig.m_original + charOffset;
+ if (charOffset + int(orig.m_before) < 0)
+ m_before = 0;
+ else
+ m_before = orig.m_before + charOffset;
+ if (charOffset <= 0 && orig.m_after + charOffset >= numChars)
+ m_after = numChars - 1;
+ else
+ m_after = orig.m_after + charOffset;
+ m_parent = NULL;
+ m_child = NULL;
+ m_sibling = NULL;
+ m_position = orig.m_position;
+ m_shift = orig.m_shift;
+ m_advance = orig.m_advance;
+ m_attach = orig.m_attach;
+ m_with = orig.m_with;
+ m_flags = orig.m_flags;
+ m_attLevel = orig.m_attLevel;
+ m_bidiCls = orig.m_bidiCls;
+ m_bidiLevel = orig.m_bidiLevel;
+ if (m_userAttr && orig.m_userAttr)
+ memcpy(m_userAttr, orig.m_userAttr, sizeAttr * sizeof(*m_userAttr));
+ if (m_justs && orig.m_justs)
+ memcpy(m_justs, orig.m_justs, SlotJustify::size_of(justLevels));
+}
+
+void Slot::update(int /*numGrSlots*/, int numCharInfo, Position &relpos)
+{
+ m_before += numCharInfo;
+ m_after += numCharInfo;
+ m_position = m_position + relpos;
+}
+
+Position Slot::finalise(const Segment *seg, const Font *font, Position & base, Rect & bbox, uint8 attrLevel, float & clusterMin, bool rtl, bool isFinal, int depth)
+{
+ SlotCollision *coll = NULL;
+ if (depth > 100 || (attrLevel && m_attLevel > attrLevel)) return Position(0, 0);
+ float scale = font ? font->scale() : 1.0f;
+ Position shift(m_shift.x * (rtl * -2 + 1) + m_just, m_shift.y);
+ float tAdvance = m_advance.x + m_just;
+ if (isFinal && (coll = seg->collisionInfo(this)))
+ {
+ const Position &collshift = coll->offset();
+ if (!(coll->flags() & SlotCollision::COLL_KERN) || rtl)
+ shift = shift + collshift;
+ }
+ const GlyphFace * glyphFace = seg->getFace()->glyphs().glyphSafe(glyph());
+ if (font)
+ {
+ scale = font->scale();
+ shift *= scale;
+ if (font->isHinted() && glyphFace)
+ tAdvance = (m_advance.x - glyphFace->theAdvance().x + m_just) * scale + font->advance(glyph());
+ else
+ tAdvance *= scale;
+ }
+ Position res;
+
+ m_position = base + shift;
+ if (!m_parent)
+ {
+ res = base + Position(tAdvance, m_advance.y * scale);
+ clusterMin = m_position.x;
+ }
+ else
+ {
+ float tAdv;
+ m_position += (m_attach - m_with) * scale;
+ tAdv = m_advance.x >= 0.5f ? m_position.x + tAdvance - shift.x : 0.f;
+ res = Position(tAdv, 0);
+ if ((m_advance.x >= 0.5f || m_position.x < 0) && m_position.x < clusterMin) clusterMin = m_position.x;
+ }
+
+ if (glyphFace)
+ {
+ Rect ourBbox = glyphFace->theBBox() * scale + m_position;
+ bbox = bbox.widen(ourBbox);
+ }
+
+ if (m_child && m_child != this && m_child->attachedTo() == this)
+ {
+ Position tRes = m_child->finalise(seg, font, m_position, bbox, attrLevel, clusterMin, rtl, isFinal, depth + 1);
+ if ((!m_parent || m_advance.x >= 0.5f) && tRes.x > res.x) res = tRes;
+ }
+
+ if (m_parent && m_sibling && m_sibling != this && m_sibling->attachedTo() == m_parent)
+ {
+ Position tRes = m_sibling->finalise(seg, font, base, bbox, attrLevel, clusterMin, rtl, isFinal, depth + 1);
+ if (tRes.x > res.x) res = tRes;
+ }
+
+ if (!m_parent && clusterMin < base.x)
+ {
+ Position adj = Position(m_position.x - clusterMin, 0.);
+ res += adj;
+ m_position += adj;
+ if (m_child) m_child->floodShift(adj);
+ }
+ return res;
+}
+
+int32 Slot::clusterMetric(const Segment *seg, uint8 metric, uint8 attrLevel, bool rtl)
+{
+ Position base;
+ if (glyph() >= seg->getFace()->glyphs().numGlyphs())
+ return 0;
+ Rect bbox = seg->theGlyphBBoxTemporary(glyph());
+ float clusterMin = 0.;
+ Position res = finalise(seg, NULL, base, bbox, attrLevel, clusterMin, rtl, false);
+
+ switch (metrics(metric))
+ {
+ case kgmetLsb :
+ return bbox.bl.x;
+ case kgmetRsb :
+ return res.x - bbox.tr.x;
+ case kgmetBbTop :
+ return bbox.tr.y;
+ case kgmetBbBottom :
+ return bbox.bl.y;
+ case kgmetBbLeft :
+ return bbox.bl.x;
+ case kgmetBbRight :
+ return bbox.tr.x;
+ case kgmetBbWidth :
+ return bbox.tr.x - bbox.bl.x;
+ case kgmetBbHeight :
+ return bbox.tr.y - bbox.bl.y;
+ case kgmetAdvWidth :
+ return res.x;
+ case kgmetAdvHeight :
+ return res.y;
+ default :
+ return 0;
+ }
+}
+
+#define SLOTGETCOLATTR(x) { SlotCollision *c = seg->collisionInfo(this); return c ? int(c-> x) : 0; }
+
+int Slot::getAttr(const Segment *seg, attrCode ind, uint8 subindex) const
+{
+ if (ind == gr_slatUserDefnV1)
+ {
+ ind = gr_slatUserDefn;
+ subindex = 0;
+ if (seg->numAttrs() == 0)
+ return 0;
+ }
+ else if (ind >= gr_slatJStretch && ind < gr_slatJStretch + 20 && ind != gr_slatJWidth)
+ {
+ int indx = ind - gr_slatJStretch;
+ return getJustify(seg, indx / 5, indx % 5);
+ }
+
+ switch (ind)
+ {
+ case gr_slatAdvX : return int(m_advance.x);
+ case gr_slatAdvY : return int(m_advance.y);
+ case gr_slatAttTo : return m_parent ? 1 : 0;
+ case gr_slatAttX : return int(m_attach.x);
+ case gr_slatAttY : return int(m_attach.y);
+ case gr_slatAttXOff :
+ case gr_slatAttYOff : return 0;
+ case gr_slatAttWithX : return int(m_with.x);
+ case gr_slatAttWithY : return int(m_with.y);
+ case gr_slatAttWithXOff:
+ case gr_slatAttWithYOff:return 0;
+ case gr_slatAttLevel : return m_attLevel;
+ case gr_slatBreak : return seg->charinfo(m_original)->breakWeight();
+ case gr_slatCompRef : return 0;
+ case gr_slatDir : return seg->dir() & 1;
+ case gr_slatInsert : return isInsertBefore();
+ case gr_slatPosX : return int(m_position.x); // but need to calculate it
+ case gr_slatPosY : return int(m_position.y);
+ case gr_slatShiftX : return int(m_shift.x);
+ case gr_slatShiftY : return int(m_shift.y);
+ case gr_slatMeasureSol: return -1; // err what's this?
+ case gr_slatMeasureEol: return -1;
+ case gr_slatJWidth: return int(m_just);
+ case gr_slatUserDefn : return m_userAttr[subindex];
+ case gr_slatSegSplit : return seg->charinfo(m_original)->flags() & 3;
+ case gr_slatBidiLevel: return m_bidiLevel;
+ case gr_slatColFlags : { SlotCollision *c = seg->collisionInfo(this); return c ? c->flags() : 0; }
+ case gr_slatColLimitblx : SLOTGETCOLATTR(limit().bl.x)
+ case gr_slatColLimitbly : SLOTGETCOLATTR(limit().bl.y)
+ case gr_slatColLimittrx : SLOTGETCOLATTR(limit().tr.x)
+ case gr_slatColLimittry : SLOTGETCOLATTR(limit().tr.y)
+ case gr_slatColShiftx : SLOTGETCOLATTR(offset().x)
+ case gr_slatColShifty : SLOTGETCOLATTR(offset().y)
+ case gr_slatColMargin : SLOTGETCOLATTR(margin())
+ case gr_slatColMarginWt : SLOTGETCOLATTR(marginWt())
+ case gr_slatColExclGlyph : SLOTGETCOLATTR(exclGlyph())
+ case gr_slatColExclOffx : SLOTGETCOLATTR(exclOffset().x)
+ case gr_slatColExclOffy : SLOTGETCOLATTR(exclOffset().y)
+ case gr_slatSeqClass : SLOTGETCOLATTR(seqClass())
+ case gr_slatSeqProxClass : SLOTGETCOLATTR(seqProxClass())
+ case gr_slatSeqOrder : SLOTGETCOLATTR(seqOrder())
+ case gr_slatSeqAboveXoff : SLOTGETCOLATTR(seqAboveXoff())
+ case gr_slatSeqAboveWt : SLOTGETCOLATTR(seqAboveWt())
+ case gr_slatSeqBelowXlim : SLOTGETCOLATTR(seqBelowXlim())
+ case gr_slatSeqBelowWt : SLOTGETCOLATTR(seqBelowWt())
+ case gr_slatSeqValignHt : SLOTGETCOLATTR(seqValignHt())
+ case gr_slatSeqValignWt : SLOTGETCOLATTR(seqValignWt())
+ default : return 0;
+ }
+}
+
+#define SLOTCOLSETATTR(x) { \
+ SlotCollision *c = seg->collisionInfo(this); \
+ if (c) { c-> x ; c->setFlags(c->flags() & ~SlotCollision::COLL_KNOWN); } \
+ break; }
+#define SLOTCOLSETCOMPLEXATTR(t, y, x) { \
+ SlotCollision *c = seg->collisionInfo(this); \
+ if (c) { \
+ const t &s = c-> y; \
+ c-> x ; c->setFlags(c->flags() & ~SlotCollision::COLL_KNOWN); } \
+ break; }
+
+void Slot::setAttr(Segment *seg, attrCode ind, uint8 subindex, int16 value, const SlotMap & map)
+{
+ if (ind == gr_slatUserDefnV1)
+ {
+ ind = gr_slatUserDefn;
+ subindex = 0;
+ if (seg->numAttrs() == 0)
+ return;
+ }
+ else if (ind >= gr_slatJStretch && ind < gr_slatJStretch + 20 && ind != gr_slatJWidth)
+ {
+ int indx = ind - gr_slatJStretch;
+ return setJustify(seg, indx / 5, indx % 5, value);
+ }
+
+ switch (ind)
+ {
+ case gr_slatAdvX : m_advance.x = value; break;
+ case gr_slatAdvY : m_advance.y = value; break;
+ case gr_slatAttTo :
+ {
+ const uint16 idx = uint16(value);
+ if (idx < map.size() && map[idx])
+ {
+ Slot *other = map[idx];
+ if (other == this || other == m_parent || other->isCopied()) break;
+ if (m_parent) { m_parent->removeChild(this); attachTo(NULL); }
+ Slot *pOther = other;
+ int count = 0;
+ bool foundOther = false;
+ while (pOther)
+ {
+ ++count;
+ if (pOther == this) foundOther = true;
+ pOther = pOther->attachedTo();
+ }
+ for (pOther = m_child; pOther; pOther = pOther->m_child)
+ ++count;
+ for (pOther = m_sibling; pOther; pOther = pOther->m_sibling)
+ ++count;
+ if (count < 100 && !foundOther && other->child(this))
+ {
+ attachTo(other);
+ if ((map.dir() != 0) ^ (idx > subindex))
+ m_with = Position(advance(), 0);
+ else // normal match to previous root
+ m_attach = Position(other->advance(), 0);
+ }
+ }
+ break;
+ }
+ case gr_slatAttX : m_attach.x = value; break;
+ case gr_slatAttY : m_attach.y = value; break;
+ case gr_slatAttXOff :
+ case gr_slatAttYOff : break;
+ case gr_slatAttWithX : m_with.x = value; break;
+ case gr_slatAttWithY : m_with.y = value; break;
+ case gr_slatAttWithXOff :
+ case gr_slatAttWithYOff : break;
+ case gr_slatAttLevel :
+ m_attLevel = byte(value);
+ break;
+ case gr_slatBreak :
+ seg->charinfo(m_original)->breakWeight(value);
+ break;
+ case gr_slatCompRef : break; // not sure what to do here
+ case gr_slatDir : break;
+ case gr_slatInsert :
+ markInsertBefore(value? true : false);
+ break;
+ case gr_slatPosX : break; // can't set these here
+ case gr_slatPosY : break;
+ case gr_slatShiftX : m_shift.x = value; break;
+ case gr_slatShiftY : m_shift.y = value; break;
+ case gr_slatMeasureSol : break;
+ case gr_slatMeasureEol : break;
+ case gr_slatJWidth : just(value); break;
+ case gr_slatSegSplit : seg->charinfo(m_original)->addflags(value & 3); break;
+ case gr_slatUserDefn : m_userAttr[subindex] = value; break;
+ case gr_slatColFlags : {
+ SlotCollision *c = seg->collisionInfo(this);
+ if (c)
+ c->setFlags(value);
+ break; }
+ case gr_slatColLimitblx : SLOTCOLSETCOMPLEXATTR(Rect, limit(), setLimit(Rect(Position(value, s.bl.y), s.tr)))
+ case gr_slatColLimitbly : SLOTCOLSETCOMPLEXATTR(Rect, limit(), setLimit(Rect(Position(s.bl.x, value), s.tr)))
+ case gr_slatColLimittrx : SLOTCOLSETCOMPLEXATTR(Rect, limit(), setLimit(Rect(s.bl, Position(value, s.tr.y))))
+ case gr_slatColLimittry : SLOTCOLSETCOMPLEXATTR(Rect, limit(), setLimit(Rect(s.bl, Position(s.tr.x, value))))
+ case gr_slatColMargin : SLOTCOLSETATTR(setMargin(value))
+ case gr_slatColMarginWt : SLOTCOLSETATTR(setMarginWt(value))
+ case gr_slatColExclGlyph : SLOTCOLSETATTR(setExclGlyph(value))
+ case gr_slatColExclOffx : SLOTCOLSETCOMPLEXATTR(Position, exclOffset(), setExclOffset(Position(value, s.y)))
+ case gr_slatColExclOffy : SLOTCOLSETCOMPLEXATTR(Position, exclOffset(), setExclOffset(Position(s.x, value)))
+ case gr_slatSeqClass : SLOTCOLSETATTR(setSeqClass(value))
+ case gr_slatSeqProxClass : SLOTCOLSETATTR(setSeqProxClass(value))
+ case gr_slatSeqOrder : SLOTCOLSETATTR(setSeqOrder(value))
+ case gr_slatSeqAboveXoff : SLOTCOLSETATTR(setSeqAboveXoff(value))
+ case gr_slatSeqAboveWt : SLOTCOLSETATTR(setSeqAboveWt(value))
+ case gr_slatSeqBelowXlim : SLOTCOLSETATTR(setSeqBelowXlim(value))
+ case gr_slatSeqBelowWt : SLOTCOLSETATTR(setSeqBelowWt(value))
+ case gr_slatSeqValignHt : SLOTCOLSETATTR(setSeqValignHt(value))
+ case gr_slatSeqValignWt : SLOTCOLSETATTR(setSeqValignWt(value))
+ default :
+ break;
+ }
+}
+
+int Slot::getJustify(const Segment *seg, uint8 level, uint8 subindex) const
+{
+ if (level && level >= seg->silf()->numJustLevels()) return 0;
+
+ if (m_justs)
+ return m_justs->values[level * SlotJustify::NUMJUSTPARAMS + subindex];
+
+ if (level >= seg->silf()->numJustLevels()) return 0;
+ Justinfo *jAttrs = seg->silf()->justAttrs() + level;
+
+ switch (subindex) {
+ case 0 : return seg->glyphAttr(gid(), jAttrs->attrStretch());
+ case 1 : return seg->glyphAttr(gid(), jAttrs->attrShrink());
+ case 2 : return seg->glyphAttr(gid(), jAttrs->attrStep());
+ case 3 : return seg->glyphAttr(gid(), jAttrs->attrWeight());
+ case 4 : return 0; // not been set yet, so clearly 0
+ default: return 0;
+ }
+}
+
+void Slot::setJustify(Segment *seg, uint8 level, uint8 subindex, int16 value)
+{
+ if (level && level >= seg->silf()->numJustLevels()) return;
+ if (!m_justs)
+ {
+ SlotJustify *j = seg->newJustify();
+ if (!j) return;
+ j->LoadSlot(this, seg);
+ m_justs = j;
+ }
+ m_justs->values[level * SlotJustify::NUMJUSTPARAMS + subindex] = value;
+}
+
+bool Slot::child(Slot *ap)
+{
+ if (this == ap) return false;
+ else if (ap == m_child) return true;
+ else if (!m_child)
+ m_child = ap;
+ else
+ return m_child->sibling(ap);
+ return true;
+}
+
+bool Slot::sibling(Slot *ap)
+{
+ if (this == ap) return false;
+ else if (ap == m_sibling) return true;
+ else if (!m_sibling || !ap)
+ m_sibling = ap;
+ else
+ return m_sibling->sibling(ap);
+ return true;
+}
+
+bool Slot::removeChild(Slot *ap)
+{
+ if (this == ap || !m_child || !ap) return false;
+ else if (ap == m_child)
+ {
+ Slot *nSibling = m_child->nextSibling();
+ m_child->nextSibling(NULL);
+ m_child = nSibling;
+ return true;
+ }
+ for (Slot *p = m_child; p; p = p->m_sibling)
+ {
+ if (p->m_sibling && p->m_sibling == ap)
+ {
+ p->m_sibling = p->m_sibling->m_sibling;
+ ap->nextSibling(NULL);
+ return true;
+ }
+ }
+ return false;
+}
+
+void Slot::setGlyph(Segment *seg, uint16 glyphid, const GlyphFace * theGlyph)
+{
+ m_glyphid = glyphid;
+ m_bidiCls = -1;
+ if (!theGlyph)
+ {
+ theGlyph = seg->getFace()->glyphs().glyphSafe(glyphid);
+ if (!theGlyph)
+ {
+ m_realglyphid = 0;
+ m_advance = Position(0.,0.);
+ return;
+ }
+ }
+ m_realglyphid = theGlyph->attrs()[seg->silf()->aPseudo()];
+ if (m_realglyphid > seg->getFace()->glyphs().numGlyphs())
+ m_realglyphid = 0;
+ const GlyphFace *aGlyph = theGlyph;
+ if (m_realglyphid)
+ {
+ aGlyph = seg->getFace()->glyphs().glyphSafe(m_realglyphid);
+ if (!aGlyph) aGlyph = theGlyph;
+ }
+ m_advance = Position(aGlyph->theAdvance().x, 0.);
+ if (seg->silf()->aPassBits())
+ {
+ seg->mergePassBits(theGlyph->attrs()[seg->silf()->aPassBits()]);
+ if (seg->silf()->numPasses() > 16)
+ seg->mergePassBits(theGlyph->attrs()[seg->silf()->aPassBits()+1] << 16);
+ }
+}
+
+void Slot::floodShift(Position adj, int depth)
+{
+ if (depth > 100)
+ return;
+ m_position += adj;
+ if (m_child) m_child->floodShift(adj, depth + 1);
+ if (m_sibling) m_sibling->floodShift(adj, depth + 1);
+}
+
+void SlotJustify::LoadSlot(const Slot *s, const Segment *seg)
+{
+ for (int i = seg->silf()->numJustLevels() - 1; i >= 0; --i)
+ {
+ Justinfo *justs = seg->silf()->justAttrs() + i;
+ int16 *v = values + i * NUMJUSTPARAMS;
+ v[0] = seg->glyphAttr(s->gid(), justs->attrStretch());
+ v[1] = seg->glyphAttr(s->gid(), justs->attrShrink());
+ v[2] = seg->glyphAttr(s->gid(), justs->attrStep());
+ v[3] = seg->glyphAttr(s->gid(), justs->attrWeight());
+ }
+}
+
+Slot * Slot::nextInCluster(const Slot *s) const
+{
+ Slot *base;
+ if (s->firstChild())
+ return s->firstChild();
+ else if (s->nextSibling())
+ return s->nextSibling();
+ while ((base = s->attachedTo()))
+ {
+ // if (base->firstChild() == s && base->nextSibling())
+ if (base->nextSibling())
+ return base->nextSibling();
+ s = base;
+ }
+ return NULL;
+}
+
+bool Slot::isChildOf(const Slot *base) const
+{
+ for (Slot *p = m_parent; p; p = p->m_parent)
+ if (p == base)
+ return true;
+ return false;
+}
+