* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
- * \author André Pönitz
+ * \author André Pönitz
*
* Full author contact details are available in file CREDITS.
*/
// It seems that MacOSX define the check macro.
#undef check
-#include "support/types.h"
+#include "Dimension.h"
#include <map>
namespace lyx {
-class InsetBase;
-class LyXText;
+class Inset;
+class Text;
class MathData;
class Paragraph;
void lyxbreaker(void const * data, const char * hint, int size);
-class Point {
-public:
- Point()
- : x_(0), y_(0)
- {}
+struct Geometry {
+ Point pos;
+ Dimension dim;
+
+ bool covers(int x, int y) const
+ {
+ return x >= pos.x_
+ && x <= pos.x_ + dim.wid
+ && y >= pos.y_ - dim.asc
+ && y <= pos.y_ + dim.des;
+ }
+
+ int squareDistance(int x, int y) const
+ {
+ int xx = 0;
+ int yy = 0;
- Point(int x, int y);
+ if (x < pos.x_)
+ xx = pos.x_ - x;
+ else if (x > pos.x_ + dim.wid)
+ xx = x - pos.x_ - dim.wid;
- int x_, y_;
+ if (y < pos.y_ - dim.asc)
+ yy = pos.y_ - dim.asc - y;
+ else if (y > pos.y_ + dim.des)
+ yy = y - pos.y_ - dim.des;
+
+ // Optimisation: We avoid to compute the sqrt on purpose.
+ return xx*xx + yy*yy;
+ }
};
+
template <class T> class CoordCacheBase {
public:
void clear()
data_.clear();
}
- bool const empty() const
+ bool empty() const
{
return data_.empty();
}
void add(T const * thing, int x, int y)
{
- data_[thing] = Point(x, y);
+ data_[thing].pos = Point(x, y);
+ }
+
+ void add(T const * thing, Dimension const & dim)
+ {
+ if (!has(thing))
+ data_[thing].pos = Point(-10000, -10000);
+ data_[thing].dim = dim;
+ }
+
+ Geometry const & geometry(T const * thing) const
+ {
+ check(thing, "geometry");
+ return data_.find(thing)->second;
+ }
+
+ Dimension const & dim(T const * thing) const
+ {
+ checkDim(thing, "dim");
+ return data_.find(thing)->second.dim;
}
int x(T const * thing) const
{
check(thing, "x");
- return data_.find(thing)->second.x_;
+ return data_.find(thing)->second.pos.x_;
}
int y(T const * thing) const
{
check(thing, "y");
- return data_.find(thing)->second.y_;
+ return data_.find(thing)->second.pos.y_;
}
Point xy(T const * thing) const
{
check(thing, "xy");
- return data_.find(thing)->second;
+ return data_.find(thing)->second.pos;
}
bool has(T const * thing) const
+ {
+ typename cache_type::const_iterator it = data_.find(thing);
+
+ if (it == data_.end())
+ return false;
+ return it->second.pos.x_ != -10000;
+ }
+
+ bool hasDim(T const * thing) const
{
return data_.find(thing) != data_.end();
}
-// T * find(int x, int y) const
-// {
-// T *
-// cache_type iter
-// }
+ bool covers(T const * thing, int x, int y) const
+ {
+ typename cache_type::const_iterator it = data_.find(thing);
+ return it != data_.end() && it->second.covers(x, y);
+ }
+
+ int squareDistance(T const * thing, int x, int y) const
+ {
+ typename cache_type::const_iterator it = data_.find(thing);
+ if (it == data_.end())
+ return 1000000;
+ return it->second.squareDistance(x, y);
+ }
private:
friend class CoordCache;
+ void checkDim(T const * thing, char const * hint) const
+ {
+ if (!hasDim(thing))
+ lyxbreaker(thing, hint, data_.size());
+ }
+
void check(T const * thing, char const * hint) const
{
if (!has(thing))
lyxbreaker(thing, hint, data_.size());
}
- typedef std::map<T const *, Point> cache_type;
+ typedef std::map<T const *, Geometry> cache_type;
cache_type data_;
-
-public:
- cache_type const & getData() const { return data_; }
};
/**
- * A global cache that allows us to come from a paragraph in a document
- * to a position point on the screen.
+ * A BufferView dependent cache that allows us to come from an inset in
+ * a document to a position point and dimension on the screen.
* All points cached in this cache are only valid between subsequent
* updates. (x,y) == (0,0) is the upper left screen corner, x increases
* to the right, y increases downwords.
- * The cache is built in BufferView::updateMetrics which is called
- * from BufferView::update. The individual points are added
- * while we paint them. See for instance paintPar in RowPainter.C.
+ * The dimension part is built in BufferView::updateMetrics() and the
+ * diverse Inset::metrics() calls.
+ * The individual points are added at drawing time in
+ * BufferView::draw(). The math inset position are cached in
+ * the diverse InsetMathXXX::draw() calls and the in-text inset position
+ * are cached in RowPainter::paintInset().
+ * FIXME: For mathed, it would be nice if the insets did not saves their
+ * position themselves. That should be the duty of the containing math
+ * array.
*/
class CoordCache {
public:
void clear();
- Point get(LyXText const *, pit_type) const;
-
- /// A map from paragraph index number to screen point
- typedef std::map<pit_type, Point> InnerParPosCache;
- /// A map from a LyXText to the map of paragraphs to screen points
- typedef std::map<LyXText const *, InnerParPosCache> ParPosCache;
- /// A map from a CursorSlice to screen points
- typedef std::map<LyXText const *, InnerParPosCache> SliceCache;
/// A map from MathData to position on the screen
- CoordCacheBase<MathData> & arrays() { return arrays_; }
- CoordCacheBase<MathData> const & getArrays() const { return arrays_; }
+ typedef CoordCacheBase<MathData> Arrays;
+ Arrays & arrays() { return arrays_; }
+ Arrays const & getArrays() const { return arrays_; }
/// A map from insets to positions on the screen
- CoordCacheBase<InsetBase> & insets() { return insets_; }
- CoordCacheBase<InsetBase> const & getInsets() const { return insets_; }
- /// A map from (LyXText, paragraph) pair to screen positions
- ParPosCache & parPos() { return pars_; }
- ParPosCache const & getParPos() const { return pars_; }
- ///
- SliceCache & slice(bool boundary)
- {
- return boundary ? slices1_ : slices0_;
- }
- SliceCache const & getSlice(bool boundary) const
- {
- return boundary ? slices1_ : slices0_;
- }
+ typedef CoordCacheBase<Inset> Insets;
+ Insets & insets() { return insets_; }
+ Insets const & getInsets() const { return insets_; }
/// Dump the contents of the cache to lyxerr in debugging form
void dump() const;
private:
/// MathDatas
- CoordCacheBase<MathData> arrays_;
+ Arrays arrays_;
// All insets
- CoordCacheBase<InsetBase> insets_;
- /// Paragraph grouped by owning text
- ParPosCache pars_;
- /// Used with boundary == 0
- SliceCache slices0_;
- /// Used with boundary == 1
- SliceCache slices1_;
+ Insets insets_;
};
} // namespace lyx
projects / lyx.git / blobdiff