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update from jack burton

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4245 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
shatty
2003-08-08 09:55:12 +00:00
parent 9fdfaac6f3
commit 323ddd5728
8 changed files with 3595 additions and 1271 deletions
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src/kits/interface/BTextView/LineBuffer.cpp
+69 -66
View File
@@ -1,5 +1,5 @@
//------------------------------------------------------------------------------
// Copyright (c) 2001-2002, OpenBeOS
// Copyright (c) 2001-2003, OpenBeOS
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
@@ -25,7 +25,6 @@
//------------------------------------------------------------------------------
// Standard Includes -----------------------------------------------------------
#include <string.h>
// System Includes -------------------------------------------------------------
#include "LineBuffer.h"
@@ -40,90 +39,94 @@
//------------------------------------------------------------------------------
_BLineBuffer_::_BLineBuffer_()
: fBlockSize(20),
fItemCount(2),
fPhysicalSize(22),
fObjectList(NULL)
: _BTextViewSupportBuffer_<STELine>(20, 2)
{
fObjectList = new STELine[fPhysicalSize];
memset(fObjectList, 0, fPhysicalSize * sizeof(STELine));
}
//------------------------------------------------------------------------------
_BLineBuffer_::~_BLineBuffer_()
{
delete[] fObjectList;
}
//------------------------------------------------------------------------------
void _BLineBuffer_::InsertLine(STELine *line, int32 index)
void
_BLineBuffer_::InsertLine(STELine *inLine, int32 index)
{
if (fItemCount == fPhysicalSize - 1)
{
STELine *new_list = new STELine[fPhysicalSize + fBlockSize];
InsertItemsAt(1, index, inLine);
}
//------------------------------------------------------------------------------
void
_BLineBuffer_::RemoveLines(int32 index, int32 count)
{
RemoveItemsAt(count, index);
}
//------------------------------------------------------------------------------
void
_BLineBuffer_::RemoveLineRange(int32 fromOffset, int32 toOffset)
{
int32 fromLine = OffsetToLine(fromOffset);
int32 toLine = OffsetToLine(toOffset);
memcpy(new_list, fObjectList, fPhysicalSize * sizeof(STELine));
delete fObjectList;
fObjectList = new_list;
int32 count = toLine - fromLine;
if (count > 0)
RemoveLines(fromLine + 1, count);
fPhysicalSize += fBlockSize;
BumpOffset(fromOffset - toOffset, fromLine + 1);
}
//------------------------------------------------------------------------------
int32
_BLineBuffer_::OffsetToLine(int32 offset) const
{
int32 minIndex = 0;
int32 maxIndex = fItemCount - 1;
int32 index = 0;
while (minIndex < maxIndex) {
index = (minIndex + maxIndex) >> 1;
if (offset >= fBuffer[index].offset) {
if (offset < fBuffer[index + 1].offset)
break;
else
minIndex = index + 1;
}
else
maxIndex = index;
}
if (index < fItemCount)
memmove(fObjectList + index + 1, fObjectList + index,
(fItemCount - index) * sizeof(STELine));
memcpy(fObjectList + index, line, sizeof(STELine));
fItemCount++;
return index;
}
//------------------------------------------------------------------------------
void _BLineBuffer_::RemoveLines(int32 index, int32 count)
int32 _BLineBuffer_::PixelToLine(float pixel) const
{
memmove(fObjectList + index, fObjectList + index + count,
(fItemCount - index - count) * sizeof(STELine));
fItemCount -= count;
}
//------------------------------------------------------------------------------
void _BLineBuffer_::RemoveLineRange(int32 from, int32 to)
{
int32 linefrom = OffsetToLine(from);
int32 lineto = OffsetToLine(to);
if (linefrom < lineto)
RemoveLines(linefrom + 1, lineto - linefrom);
BumpOffset(linefrom + 1, from - to);
}
//------------------------------------------------------------------------------
int32 _BLineBuffer_::OffsetToLine(int32 offset) const
{
if (offset == 0)
return 0;
for (int i = 0; i < fItemCount; i++)
{
if (offset < fObjectList[i].fOffset)
return i - 1;
int32 minIndex = 0;
int32 maxIndex = fItemCount - 1;
int32 index = 0;
while (minIndex < maxIndex) {
index = (minIndex + maxIndex) >> 1;
if (pixel >= fBuffer[index].origin) {
if (pixel < fBuffer[index + 1].origin)
break;
else
minIndex = index + 1;
}
else
maxIndex = index;
}
return fItemCount - 2;
return index;
}
//------------------------------------------------------------------------------
int32 _BLineBuffer_::PixelToLine(float height) const
{
for (int i = 0; i < fItemCount; i++)
{
if (height < fObjectList[i].fHeight)
return i - 1;
}
return fItemCount - 2;
void
_BLineBuffer_::BumpOrigin(float delta, long index)
{
for (long i = index; i < fItemCount; i++)
fBuffer[i].origin += delta;
}
//------------------------------------------------------------------------------
void _BLineBuffer_::BumpOffset(int32 line, int32 offset)
void
_BLineBuffer_::BumpOffset(int32 delta, int32 index)
{
for (int i = line; i < fItemCount; i++)
fObjectList[i].fOffset += offset;
for (long i = index; i < fItemCount; i++)
fBuffer[i].offset += delta;
}
//------------------------------------------------------------------------------