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improved position caching

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@23889 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
André Pönitz 2008-03-21 20:47:29 +00:00
parent 6a2921d119
commit f182333311
2 changed files with 32 additions and 16 deletions
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44
src/frontends/qt4/GuiSymbols.cpp
View File

@ -22,6 +22,7 @@
#include "Encoding.h"
#include "FuncRequest.h"
#include "support/debug.h"
#include "support/gettext.h"
#include <QChar>
@ -139,8 +140,8 @@ UnicodeBlocks unicode_blocks[] = {
{ N_("CJK Compatibility Ideographs Supplement"), 0x2f800, 0x2fa1f },
{ N_("Tags"), 0xe0000, 0xe007f },
{ N_("Variation Selectors Supplement"), 0xe0100, 0xe01ef },
{ N_("Supplementary Private Use Area-A"), 0xf0000, 0xe01ef },
{ N_("Supplementary Private Use Area-B"), 0x100000, 0x10ffff }
{ N_("Supplementary Private Use Area-A"), 0xf0000, 0xffffd },
{ N_("Supplementary Private Use Area-B"), 0x100000, 0x10fffd }
};
const int no_blocks = sizeof(unicode_blocks) / sizeof(UnicodeBlocks);
@ -151,17 +152,32 @@ QString getBlock(char_type c)
// store an educated guess for the next search
static int lastBlock = 0;
if (c < unicode_blocks[lastBlock].start
|| c > unicode_blocks[lastBlock].end)
{
// guess was wrong. do a real search.
int i = 0;
while (c > unicode_blocks[i].end && i < no_blocks)
++i;
if (unicode_blocks[i].name.isEmpty())
return QString();
lastBlock = i;
}
// "clever reset"
if (c < 0x7f)
lastBlock = 0;
// off the end already
if (lastBlock == no_blocks)
return QString();
// c falls into a covered area, and we can guess which
if (c >= unicode_blocks[lastBlock].start
&& c <= unicode_blocks[lastBlock].end)
return unicode_blocks[lastBlock].name;
// c falls into an uncovered area, but we can guess which
if (c > unicode_blocks[lastBlock].end
&& c < unicode_blocks[lastBlock + 1].start)
return QString();
// guessing was wrong so far. do a real search.
int i = 0;
while (c > unicode_blocks[i].end && i < no_blocks)
++i;
if (i == no_blocks)
return QString();
lastBlock = i;
//LYXERR0("fail: " << int(c) << ' ' << lastBlock);
return unicode_blocks[lastBlock].name;
}
@ -388,7 +404,7 @@ void GuiSymbols::updateSymbolList(bool update_combo)
bool const show_all = categoryFilterCB->isChecked();
if (symbols_.empty() || update_combo)
symbols_ = encodings.getFromLyXName(encoding_)->getSymbolsList();
symbols_ = encodings.getFromLyXName(encoding_)->symbolsList();
if (!show_all) {
for (int i = 0 ; i < no_blocks; ++i)

4
src/frontends/qt4/GuiSymbols.h
View File

@ -16,7 +16,7 @@
#include "ui_SymbolsUi.h"
#include <map>
#include <set>
#include <vector>
namespace lyx {
namespace frontend {
@ -62,7 +62,7 @@ private:
///
UsedBlocks used_blocks;
/// list of all symbols
typedef std::set<char_type> SymbolsList;
typedef std::vector<char_type> SymbolsList;
///
SymbolsList symbols_;
/// custom model for symbol list view