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richedit: Get the paragraph with ME_RunOfsFromCharOfs.

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The ME_RunOfsFromCharOfs function finds the paragraph before finding the
run and offset within the run, so the function may as well be able to
return this paragraph to the caller.  Many callers to the function
instead find the paragraph from the run, which ends up unnecessarily
traversing a linked list of runs within the paragraph.
This commit is contained in:
Dylan Smith 2009-02-06 01:09:47 -05:00 committed by Alexandre Julliard
parent a5bfa1a2ab
commit 12ca50db7a
4 changed files with 34 additions and 67 deletions
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55
dlls/riched20/editor.c
View file

@ -1687,33 +1687,18 @@ ME_FindText(ME_TextEditor *editor, DWORD flags, const CHARRANGE *chrg, const WCH
chrgText->cpMin = chrgText->cpMax = -1;
return -1;
}
if (flags & FR_DOWN) /* Forward search */
{
/* If possible, find the character before where the search starts */
if ((flags & FR_WHOLEWORD) && nMin)
{
nStart = nMin - 1;
ME_RunOfsFromCharOfs(editor, nStart, &item, &nStart);
if (!item)
{
if (chrgText)
chrgText->cpMin = chrgText->cpMax = -1;
return -1;
}
ME_RunOfsFromCharOfs(editor, nMin - 1, NULL, &item, &nStart);
wLastChar = item->member.run.strText->szData[nStart];
}
nStart = nMin;
ME_RunOfsFromCharOfs(editor, nStart, &item, &nStart);
if (!item)
{
if (chrgText)
chrgText->cpMin = chrgText->cpMax = -1;
return -1;
}
ME_RunOfsFromCharOfs(editor, nMin, &para, &item, &nStart);
para = ME_GetParagraph(item);
while (item
&& para->member.para.nCharOfs + item->member.run.nCharOfs + nStart + nLen <= nMax)
{
@ -1785,28 +1770,12 @@ ME_FindText(ME_TextEditor *editor, DWORD flags, const CHARRANGE *chrg, const WCH
/* If possible, find the character after where the search ends */
if ((flags & FR_WHOLEWORD) && nMax < nTextLen - 1)
{
nEnd = nMax + 1;
ME_RunOfsFromCharOfs(editor, nEnd, &item, &nEnd);
if (!item)
{
if (chrgText)
chrgText->cpMin = chrgText->cpMax = -1;
return -1;
}
ME_RunOfsFromCharOfs(editor, nMax + 1, NULL, &item, &nEnd);
wLastChar = item->member.run.strText->szData[nEnd];
}
nEnd = nMax;
ME_RunOfsFromCharOfs(editor, nEnd, &item, &nEnd);
if (!item)
{
if (chrgText)
chrgText->cpMin = chrgText->cpMax = -1;
return -1;
}
para = ME_GetParagraph(item);
ME_RunOfsFromCharOfs(editor, nMax, &para, &item, &nEnd);
while (item
&& para->member.para.nCharOfs + item->member.run.nCharOfs + nEnd - nLen >= nMin)
{
@ -3841,7 +3810,7 @@ LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
return ME_CharFromPos(editor, ((POINTL *)lParam)->x, ((POINTL *)lParam)->y, NULL);
case EM_POSFROMCHAR:
{
ME_DisplayItem *pRun;
ME_DisplayItem *pPara, *pRun;
int nCharOfs, nOffset, nLength;
POINTL pt = {0,0};
@ -3853,11 +3822,11 @@ LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
nCharOfs = min(nCharOfs, nLength);
nCharOfs = max(nCharOfs, 0);
ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
ME_RunOfsFromCharOfs(editor, nCharOfs, &pPara, &pRun, &nOffset);
assert(pRun->type == diRun);
pt.y = pRun->member.run.pt.y;
pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset);
pt.y += ME_GetParagraph(pRun)->member.para.pt.y + editor->rcFormat.top;
pt.y += pPara->member.para.pt.y + editor->rcFormat.top;
pt.x += editor->rcFormat.left;
pt.x -= editor->horz_si.nPos;
@ -4540,7 +4509,7 @@ int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart,
int nOffset, nWritten = 0;
WCHAR *pStart = buffer;
ME_RunOfsFromCharOfs(editor, nStart, &pRun, &nOffset);
ME_RunOfsFromCharOfs(editor, nStart, NULL, &pRun, &nOffset);
/* bCRLF flag is only honored in 2.0 and up. 1.0 must always return text verbatim */
if (editor->bEmulateVersion10) bCRLF = 0;
@ -4728,10 +4697,8 @@ static BOOL ME_FindNextURLCandidate(ME_TextEditor *editor, int sel_min, int sel_
TRACE("sel_min = %d sel_max = %d\n", sel_min, sel_max);
*candidate_min = *candidate_max = -1;
ME_RunOfsFromCharOfs(editor, sel_min, &item, &nStart);
if (!item) return FALSE;
ME_RunOfsFromCharOfs(editor, sel_min, &para, &item, &nStart);
TRACE("nStart = %d\n", nStart);
para = ME_GetParagraph(item);
if (sel_max == -1) sel_max = ME_GetTextLength(editor);
while (item && para->member.para.nCharOfs + item->member.run.nCharOfs + nStart < sel_max)
{

4
dlls/riched20/editor.h
View file

@ -162,7 +162,7 @@ ME_DisplayItem *ME_SplitFurther(ME_TextEditor *editor, ME_DisplayItem *run);
void ME_CalcRunExtent(ME_Context *c, const ME_Paragraph *para, int startx, ME_Run *run);
SIZE ME_GetRunSize(ME_Context *c, const ME_Paragraph *para, ME_Run *run, int nLen, int startx);
void ME_CursorFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_Cursor *pCursor);
void ME_RunOfsFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem **ppRun, int *pOfs);
void ME_RunOfsFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem **ppPara, ME_DisplayItem **ppRun, int *pOfs);
int ME_CharOfsFromRunOfs(ME_TextEditor *editor, ME_DisplayItem *pRun, int nOfs);
void ME_SkipAndPropagateCharOffset(ME_DisplayItem *p, int shift);
void ME_SetCharFormat(ME_TextEditor *editor, int nFrom, int nLen, CHARFORMAT2W *pFmt);
@ -211,7 +211,7 @@ void ME_InvalidateMarkedParagraphs(ME_TextEditor *editor);
void ME_SendRequestResize(ME_TextEditor *editor, BOOL force);
/* para.c */
ME_DisplayItem *ME_GetParagraph(ME_DisplayItem *run);
ME_DisplayItem *ME_GetParagraph(ME_DisplayItem *run);
void ME_GetSelectionParas(ME_TextEditor *editor, ME_DisplayItem **para, ME_DisplayItem **para_end);
void ME_MakeFirstParagraph(ME_TextEditor *editor);
ME_DisplayItem *ME_SplitParagraph(ME_TextEditor *editor, ME_DisplayItem *rp, ME_Style *style, ME_String *eol_str, int paraFlags);

28
dlls/riched20/run.c
View file

@ -164,12 +164,12 @@ int ME_CharOfsFromRunOfs(ME_TextEditor *editor, ME_DisplayItem *pRun, int nOfs)
* ME_CursorFromCharOfs
*
* Converts a character offset (relative to the start of the document) to
* a cursor structure (which contains a run and a position relative to that
* a cursor structure (which contains a run and a position relative to that
* run).
*/
void ME_CursorFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_Cursor *pCursor)
{
ME_RunOfsFromCharOfs(editor, nCharOfs, &pCursor->pRun, &pCursor->nOffset);
ME_RunOfsFromCharOfs(editor, nCharOfs, NULL, &pCursor->pRun, &pCursor->nOffset);
}
/******************************************************************************
@ -179,13 +179,14 @@ void ME_CursorFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_Cursor *pCurso
* (absolute offset being an offset relative to the start of the document).
* Kind of a "global to local" offset conversion.
*/
void ME_RunOfsFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem **ppRun, int *pOfs)
void ME_RunOfsFromCharOfs(ME_TextEditor *editor,
int nCharOfs,
ME_DisplayItem **ppPara,
ME_DisplayItem **ppRun,
int *pOfs)
{
ME_DisplayItem *item, *next_item;
assert(ppRun);
assert(pOfs);
nCharOfs = max(nCharOfs, 0);
nCharOfs = min(nCharOfs, ME_GetTextLength(editor));
@ -197,6 +198,7 @@ void ME_RunOfsFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem **
} while (next_item->member.para.nCharOfs <= nCharOfs);
assert(item->type == diParagraph);
nCharOfs -= item->member.para.nCharOfs;
if (ppPara) *ppPara = item;
/* Find the run at the offset. */
next_item = ME_FindItemFwd(item, diRun);
@ -208,8 +210,8 @@ void ME_RunOfsFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem **
assert(item->type == diRun);
nCharOfs -= item->member.run.nCharOfs;
*ppRun = item;
*pOfs = nCharOfs;
if (ppRun) *ppRun = item;
if (pOfs) *pOfs = nCharOfs;
}
/******************************************************************************
@ -878,17 +880,17 @@ void ME_GetSelectionCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt)
/******************************************************************************
* ME_GetCharFormat
*
*
* Returns the style consisting of those attributes which are consistently set
* in the whole character range.
*/
* in the whole character range.
*/
void ME_GetCharFormat(ME_TextEditor *editor, int nFrom, int nTo, CHARFORMAT2W *pFmt)
{
ME_DisplayItem *run, *run_end;
int nOffset, nOffset2;
CHARFORMAT2W tmp;
ME_RunOfsFromCharOfs(editor, nFrom, &run, &nOffset);
ME_RunOfsFromCharOfs(editor, nFrom, NULL, &run, &nOffset);
if (nFrom == nTo) /* special case - if selection is empty, take previous char's formatting */
{
if (!nOffset)
@ -905,7 +907,7 @@ void ME_GetCharFormat(ME_TextEditor *editor, int nFrom, int nTo, CHARFORMAT2W *p
if (nTo>nFrom) /* selection consists of chars from nFrom up to nTo-1 */
nTo--;
ME_RunOfsFromCharOfs(editor, nTo, &run_end, &nOffset2);
ME_RunOfsFromCharOfs(editor, nTo, NULL, &run_end, &nOffset2);
ME_GetRunCharFormat(editor, run, pFmt);

14
dlls/riched20/writer.c
View file

@ -766,13 +766,11 @@ static BOOL
ME_StreamOutRTF(ME_TextEditor *editor, ME_OutStream *pStream, int nStart, int nChars, int dwFormat)
{
ME_DisplayItem *p, *pEnd, *pPara;
int nOffset, nEndLen;
ME_RunOfsFromCharOfs(editor, nStart, &p, &nOffset);
ME_RunOfsFromCharOfs(editor, nStart+nChars, &pEnd, &nEndLen);
pPara = ME_GetParagraph(p);
int nOffset, nEndLen;
ME_RunOfsFromCharOfs(editor, nStart, &pPara, &p, &nOffset);
ME_RunOfsFromCharOfs(editor, nStart+nChars, NULL, &pEnd, &nEndLen);
if (!ME_StreamOutRTFHeader(pStream, dwFormat))
return FALSE;
@ -922,7 +920,7 @@ ME_StreamOutText(ME_TextEditor *editor, ME_OutStream *pStream, int nStart, int n
int nBufLen = 0;
BOOL success = TRUE;
ME_RunOfsFromCharOfs(editor, nStart, &item, &nStart);
ME_RunOfsFromCharOfs(editor, nStart, NULL, &item, &nStart);
if (!item)
return FALSE;