3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
8 * Full author contact details are available in file CREDITS.
14 // It seems that MacOSX define the check macro.
17 #include "Dimension.h"
26 void lyxbreaker(void const * data, const char * hint, int size);
32 bool covers(int x, int y) const
35 && x <= pos.x_ + dim.wid
36 && y >= pos.y_ - dim.asc
37 && y <= pos.y_ + dim.des;
40 int squareDistance(int x, int y) const
47 else if (x > pos.x_ + dim.wid)
48 xx = x - pos.x_ - dim.wid;
50 if (y < pos.y_ - dim.asc)
51 yy = pos.y_ - dim.asc - y;
52 else if (y > pos.y_ + dim.des)
53 yy = y - pos.y_ - dim.des;
55 // Optimisation: We avoid to compute the sqrt on purpose.
61 template <class T> class CoordCacheBase {
73 void add(T const * thing, int x, int y)
75 data_[thing].pos = Point(x, y);
78 void add(T const * thing, Dimension const & dim)
81 data_[thing].pos = Point(-10000, -10000);
82 data_[thing].dim = dim;
85 Geometry const & geometry(T const * thing) const
87 check(thing, "geometry");
88 return data_.find(thing)->second;
91 Dimension const & dim(T const * thing) const
93 checkDim(thing, "dim");
94 return data_.find(thing)->second.dim;
97 int x(T const * thing) const
100 return data_.find(thing)->second.pos.x_;
103 int y(T const * thing) const
106 return data_.find(thing)->second.pos.y_;
109 Point xy(T const * thing) const
112 return data_.find(thing)->second.pos;
115 bool has(T const * thing) const
117 typename cache_type::const_iterator it = data_.find(thing);
119 if (it == data_.end())
121 return it->second.pos.x_ != -10000;
124 bool hasDim(T const * thing) const
126 return data_.find(thing) != data_.end();
129 bool covers(T const * thing, int x, int y) const
131 typename cache_type::const_iterator it = data_.find(thing);
132 return it != data_.end() && it->second.covers(x, y);
135 int squareDistance(T const * thing, int x, int y) const
137 typename cache_type::const_iterator it = data_.find(thing);
138 if (it == data_.end())
140 return it->second.squareDistance(x, y);
144 friend class CoordCache;
146 void checkDim(T const * thing, char const * hint) const
149 lyxbreaker(thing, hint, data_.size());
152 void check(T const * thing, char const * hint) const
155 lyxbreaker(thing, hint, data_.size());
158 typedef std::map<T const *, Geometry> cache_type;
163 * A BufferView dependent cache that allows us to come from an inset in
164 * a document to a position point and dimension on the screen.
165 * All points cached in this cache are only valid between subsequent
166 * updates. (x,y) == (0,0) is the upper left screen corner, x increases
167 * to the right, y increases downwords.
168 * The dimension part is built in BufferView::updateMetrics() and the
169 * diverse Inset::metrics() calls.
170 * The individual points are added at drawing time in
171 * BufferView::draw(). The math inset position are cached in
172 * the diverse InsetMathXXX::draw() calls and the in-text inset position
173 * are cached in RowPainter::paintInset().
174 * FIXME: For mathed, it would be nice if the insets did not saves their
175 * position themselves. That should be the duty of the containing math
182 /// A map from MathData to position on the screen
183 typedef CoordCacheBase<MathData> Arrays;
184 Arrays & arrays() { return arrays_; }
185 Arrays const & getArrays() const { return arrays_; }
186 /// A map from insets to positions on the screen
187 typedef CoordCacheBase<Inset> Insets;
188 Insets & insets() { return insets_; }
189 Insets const & getInsets() const { return insets_; }
191 /// Dump the contents of the cache to lyxerr in debugging form