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978 lines
30 KiB
C
978 lines
30 KiB
C
/*
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* RichEdit - operations on runs (diRun, rectangular pieces of paragraphs).
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* Splitting/joining runs. Adjusting offsets after deleting/adding content.
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* Character/pixel conversions.
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*
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* Copyright 2004 by Krzysztof Foltman
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* Copyright 2006 by Phil Krylov
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "editor.h"
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WINE_DEFAULT_DEBUG_CHANNEL(richedit);
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WINE_DECLARE_DEBUG_CHANNEL(richedit_check);
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WINE_DECLARE_DEBUG_CHANNEL(richedit_lists);
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/******************************************************************************
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* ME_CanJoinRuns
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*
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* Returns 1 if two runs can be safely merged into one, 0 otherwise.
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*/
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int ME_CanJoinRuns(ME_Run *run1, ME_Run *run2)
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{
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if ((run1->nFlags | run2->nFlags) & MERF_NOJOIN)
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return 0;
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if (run1->style != run2->style)
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return 0;
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if ((run1->nFlags & MERF_STYLEFLAGS) != (run2->nFlags & MERF_STYLEFLAGS))
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return 0;
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return 1;
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}
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void ME_SkipAndPropagateCharOffset(ME_DisplayItem *p, int shift)
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{
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p = ME_FindItemFwd(p, diRunOrParagraphOrEnd);
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assert(p);
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ME_PropagateCharOffset(p, shift);
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}
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/******************************************************************************
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* ME_PropagateCharOffsets
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*
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* Shifts (increases or decreases) character offset (relative to beginning of
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* the document) of the part of the text starting from given place.
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*/
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void ME_PropagateCharOffset(ME_DisplayItem *p, int shift)
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{
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/* Runs in one paragraph contain character offset relative to their owning
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* paragraph. If we start the shifting from the run, we need to shift
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* all the relative offsets until the end of the paragraph
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*/
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if (p->type == diRun) /* propagate in all runs in this para */
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{
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TRACE("PropagateCharOffset(%s, %d)\n", debugstr_w(p->member.run.strText->szData), shift);
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do {
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p->member.run.nCharOfs += shift;
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assert(p->member.run.nCharOfs >= 0);
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p = ME_FindItemFwd(p, diRunOrParagraphOrEnd);
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} while(p->type == diRun);
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}
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/* Runs in next paragraphs don't need their offsets updated, because they,
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* again, those offsets are relative to their respective paragraphs.
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* Instead of that, we're updating paragraphs' character offsets.
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*/
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if (p->type == diParagraph) /* propagate in all next paras */
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{
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do {
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p->member.para.nCharOfs += shift;
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assert(p->member.para.nCharOfs >= 0);
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p = p->member.para.next_para;
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} while(p->type == diParagraph);
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}
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/* diTextEnd also has character offset in it, which makes finding text length
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* easier. But it needs to be up to date first.
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*/
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if (p->type == diTextEnd)
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{
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p->member.para.nCharOfs += shift;
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assert(p->member.para.nCharOfs >= 0);
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}
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}
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/******************************************************************************
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* ME_CheckCharOffsets
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*
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* Checks if editor lists' validity and optionally dumps the document structure
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*/
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void ME_CheckCharOffsets(ME_TextEditor *editor)
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{
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ME_DisplayItem *p = editor->pBuffer->pFirst;
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int ofs = 0, ofsp = 0;
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if(TRACE_ON(richedit_lists))
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{
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TRACE_(richedit_lists)("---\n");
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ME_DumpDocument(editor->pBuffer);
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}
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do {
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p = ME_FindItemFwd(p, diRunOrParagraphOrEnd);
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switch(p->type) {
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case diTextEnd:
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TRACE_(richedit_check)("tend, real ofsp = %d, counted = %d\n", p->member.para.nCharOfs, ofsp+ofs);
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assert(ofsp+ofs == p->member.para.nCharOfs);
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return;
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case diParagraph:
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TRACE_(richedit_check)("para, real ofsp = %d, counted = %d\n", p->member.para.nCharOfs, ofsp+ofs);
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assert(ofsp+ofs == p->member.para.nCharOfs);
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ofsp = p->member.para.nCharOfs;
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ofs = 0;
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break;
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case diRun:
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TRACE_(richedit_check)("run, real ofs = %d (+ofsp = %d), counted = %d, len = %d, txt = \"%s\", flags=%08x, fx&mask = %08x\n",
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p->member.run.nCharOfs, p->member.run.nCharOfs+ofsp, ofsp+ofs,
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p->member.run.strText->nLen, debugstr_w(p->member.run.strText->szData),
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p->member.run.nFlags,
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p->member.run.style->fmt.dwMask & p->member.run.style->fmt.dwEffects);
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assert(ofs == p->member.run.nCharOfs);
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if (p->member.run.nFlags & MERF_ENDPARA)
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ofs += (editor->bEmulateVersion10 ? 2 : 1);
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else
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ofs += ME_StrLen(p->member.run.strText);
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break;
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default:
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assert(0);
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}
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} while(1);
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}
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/******************************************************************************
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* ME_CharOfsFromRunOfs
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*
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* Converts a character position relative to the start of the run, to a
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* character position relative to the start of the document.
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* Kind of a "local to global" offset conversion.
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*/
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int ME_CharOfsFromRunOfs(ME_TextEditor *editor, ME_DisplayItem *pRun, int nOfs)
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{
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ME_DisplayItem *pPara;
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assert(pRun->type == diRun);
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assert(pRun->member.run.nCharOfs != -1);
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pPara = ME_FindItemBack(pRun, diParagraph);
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assert(pPara);
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assert(pPara->type==diParagraph);
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return pPara->member.para.nCharOfs + pRun->member.run.nCharOfs
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+ ME_VPosToPos(pRun->member.run.strText, nOfs);
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}
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/******************************************************************************
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* ME_CursorFromCharOfs
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*
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* Converts a character offset (relative to the start of the document) to
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* a cursor structure (which contains a run and a position relative to that
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* run).
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*/
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void ME_CursorFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_Cursor *pCursor)
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{
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ME_RunOfsFromCharOfs(editor, nCharOfs, &pCursor->pRun, &pCursor->nOffset);
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}
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/******************************************************************************
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* ME_RunOfsFromCharOfs
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*
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* Find a run and relative character offset given an absolute character offset
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* (absolute offset being an offset relative to the start of the document).
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* Kind of a "global to local" offset conversion.
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*/
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void ME_RunOfsFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem **ppRun, int *pOfs)
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{
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ME_DisplayItem *pPara;
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int nParaOfs;
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pPara = editor->pBuffer->pFirst->member.para.next_para;
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assert(pPara);
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assert(ppRun);
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assert(pOfs);
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while (pPara->type == diParagraph)
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{
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nParaOfs = pPara->member.para.nCharOfs;
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assert(nCharOfs >= nParaOfs);
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if (nCharOfs < pPara->member.para.next_para->member.para.nCharOfs)
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{
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int eollen = 1;
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*ppRun = ME_FindItemFwd(pPara, diRun);
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assert(*ppRun);
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while (!((*ppRun)->member.run.nFlags & MERF_ENDPARA))
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{
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ME_DisplayItem *pNext = ME_FindItemFwd(*ppRun, diRun);
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assert(pNext);
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assert(pNext->type == diRun);
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if (nCharOfs < nParaOfs + pNext->member.run.nCharOfs) {
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*pOfs = ME_PosToVPos((*ppRun)->member.run.strText,
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nCharOfs - nParaOfs - (*ppRun)->member.run.nCharOfs);
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return;
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}
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*ppRun = pNext;
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}
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/* the handling of bEmulateVersion10 may be a source of many bugs, I'm afraid */
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eollen = (editor->bEmulateVersion10 ? 2 : 1);
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if (nCharOfs >= nParaOfs + (*ppRun)->member.run.nCharOfs &&
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nCharOfs < nParaOfs + (*ppRun)->member.run.nCharOfs + eollen) {
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*pOfs = 0;
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return;
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}
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}
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pPara = pPara->member.para.next_para;
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}
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*ppRun = ME_FindItemBack(editor->pBuffer->pLast, diRun);
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*pOfs = 0;
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assert((*ppRun)->member.run.nFlags & MERF_ENDPARA);
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}
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/******************************************************************************
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* ME_JoinRuns
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*
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* Merges two adjacent runs, the one given as a parameter and the next one.
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*/
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void ME_JoinRuns(ME_TextEditor *editor, ME_DisplayItem *p)
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{
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ME_DisplayItem *pNext = p->next;
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int i;
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assert(p->type == diRun && pNext->type == diRun);
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assert(p->member.run.nCharOfs != -1);
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ME_GetParagraph(p)->member.para.nFlags |= MEPF_REWRAP;
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/* if we were at the end of screen line, and the next run is in the new
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* line, then it's not the end of the line anymore */
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if (editor->bCaretAtEnd && editor->pCursors[0].pRun == pNext)
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editor->bCaretAtEnd = FALSE;
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/* Update all cursors so that they don't contain the soon deleted run */
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for (i=0; i<editor->nCursors; i++) {
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if (editor->pCursors[i].pRun == pNext) {
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editor->pCursors[i].pRun = p;
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editor->pCursors[i].nOffset += ME_StrVLen(p->member.run.strText);
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}
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}
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ME_AppendString(p->member.run.strText, pNext->member.run.strText);
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ME_Remove(pNext);
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ME_DestroyDisplayItem(pNext);
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ME_UpdateRunFlags(editor, &p->member.run);
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if(TRACE_ON(richedit))
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{
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TRACE("Before check after join\n");
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ME_CheckCharOffsets(editor);
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TRACE("After check after join\n");
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}
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}
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/******************************************************************************
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* ME_SplitRun
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*
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* Splits a run into two in a given place. It also updates the screen position
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* and size (extent) of the newly generated runs.
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*/
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ME_DisplayItem *ME_SplitRun(ME_Context *c, ME_DisplayItem *item, int nVChar)
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{
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ME_TextEditor *editor = c->editor;
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ME_DisplayItem *item2 = NULL;
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ME_Run *run, *run2;
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ME_Paragraph *para = &ME_GetParagraph(item)->member.para;
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assert(item->member.run.nCharOfs != -1);
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if(TRACE_ON(richedit))
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{
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TRACE("Before check before split\n");
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ME_CheckCharOffsets(editor);
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TRACE("After check before split\n");
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}
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run = &item->member.run;
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TRACE("Before split: %s(%d, %d)\n", debugstr_w(run->strText->szData),
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run->pt.x, run->pt.y);
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item2 = ME_SplitRunSimple(editor, item, nVChar);
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run2 = &item2->member.run;
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ME_CalcRunExtent(c, para, run);
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ME_CalcRunExtent(c, para, run2);
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run2->pt.x = run->pt.x+run->nWidth;
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run2->pt.y = run->pt.y;
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if(TRACE_ON(richedit))
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{
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TRACE("Before check after split\n");
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ME_CheckCharOffsets(editor);
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TRACE("After check after split\n");
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TRACE("After split: %s(%d, %d), %s(%d, %d)\n",
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debugstr_w(run->strText->szData), run->pt.x, run->pt.y,
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debugstr_w(run2->strText->szData), run2->pt.x, run2->pt.y);
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}
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return item2;
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}
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/******************************************************************************
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* ME_SplitRunSimple
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*
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* Does the most basic job of splitting a run into two - it does not
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* update the positions and extents.
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*/
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ME_DisplayItem *ME_SplitRunSimple(ME_TextEditor *editor, ME_DisplayItem *item, int nVChar)
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{
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ME_Run *run = &item->member.run;
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ME_DisplayItem *item2;
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ME_Run *run2;
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int i;
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assert(nVChar > 0 && nVChar < ME_StrVLen(run->strText));
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assert(item->type == diRun);
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assert(!(item->member.run.nFlags & MERF_NONTEXT));
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assert(item->member.run.nCharOfs != -1);
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item2 = ME_MakeRun(run->style,
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ME_VSplitString(run->strText, nVChar), run->nFlags&MERF_SPLITMASK);
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item2->member.run.nCharOfs = item->member.run.nCharOfs+
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ME_VPosToPos(item->member.run.strText, nVChar);
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run2 = &item2->member.run;
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ME_InsertBefore(item->next, item2);
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ME_UpdateRunFlags(editor, run);
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ME_UpdateRunFlags(editor, run2);
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for (i=0; i<editor->nCursors; i++) {
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if (editor->pCursors[i].pRun == item &&
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editor->pCursors[i].nOffset >= nVChar) {
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assert(item2->type == diRun);
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editor->pCursors[i].pRun = item2;
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editor->pCursors[i].nOffset -= nVChar;
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}
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}
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ME_GetParagraph(item)->member.para.nFlags |= MEPF_REWRAP;
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return item2;
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}
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/******************************************************************************
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* ME_MakeRun
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*
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* A helper function to create run structures quickly.
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*/
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ME_DisplayItem *ME_MakeRun(ME_Style *s, ME_String *strData, int nFlags)
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{
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ME_DisplayItem *item = ME_MakeDI(diRun);
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item->member.run.style = s;
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item->member.run.strText = strData;
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item->member.run.nFlags = nFlags;
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item->member.run.nCharOfs = -1;
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ME_AddRefStyle(s);
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return item;
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}
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/******************************************************************************
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* ME_InsertRun
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*
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* Inserts a run at a given character position (offset).
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*/
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ME_DisplayItem *ME_InsertRun(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem *pItem)
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{
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ME_Cursor tmp;
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ME_DisplayItem *pDI;
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assert(pItem->type == diRun || pItem->type == diUndoInsertRun);
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ME_CursorFromCharOfs(editor, nCharOfs, &tmp);
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pDI = ME_InsertRunAtCursor(editor, &tmp, pItem->member.run.style,
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pItem->member.run.strText->szData,
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pItem->member.run.strText->nLen,
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pItem->member.run.nFlags);
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return pDI;
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}
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/******************************************************************************
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* ME_InsertRunAtCursor
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*
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* Inserts a new run with given style, flags and content at a given position,
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* which is passed as a cursor structure (which consists of a run and
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* a run-relative character offset).
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*/
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ME_DisplayItem *
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ME_InsertRunAtCursor(ME_TextEditor *editor, ME_Cursor *cursor, ME_Style *style,
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const WCHAR *str, int len, int flags)
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{
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ME_DisplayItem *pDI;
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ME_UndoItem *pUI;
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if (cursor->nOffset) {
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/* We're inserting at the middle of the existing run, which means that
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* that run must be split. It isn't always necessary, but */
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cursor->pRun = ME_SplitRunSimple(editor, cursor->pRun, cursor->nOffset);
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cursor->nOffset = 0;
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}
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pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
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if (pUI) {
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pUI->nStart = (ME_GetParagraph(cursor->pRun)->member.para.nCharOfs
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+ cursor->pRun->member.run.nCharOfs);
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pUI->nLen = len;
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}
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pDI = ME_MakeRun(style, ME_MakeStringN(str, len), flags);
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pDI->member.run.nCharOfs = cursor->pRun->member.run.nCharOfs;
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ME_InsertBefore(cursor->pRun, pDI);
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TRACE("Shift length:%d\n", len);
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ME_PropagateCharOffset(cursor->pRun, len);
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ME_GetParagraph(cursor->pRun)->member.para.nFlags |= MEPF_REWRAP;
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return pDI;
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}
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/******************************************************************************
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* ME_UpdateRunFlags
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*
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* Determine some of run attributes given its content (style, text content).
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* Some flags cannot be determined by this function (MERF_GRAPHICS,
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* MERF_ENDPARA)
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*/
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void ME_UpdateRunFlags(ME_TextEditor *editor, ME_Run *run)
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{
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assert(run->nCharOfs != -1);
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if (RUN_IS_HIDDEN(run))
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run->nFlags |= MERF_HIDDEN;
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else
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run->nFlags &= ~MERF_HIDDEN;
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if (ME_IsSplitable(run->strText))
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run->nFlags |= MERF_SPLITTABLE;
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else
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run->nFlags &= ~MERF_SPLITTABLE;
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if (!(run->nFlags & MERF_NOTEXT)) {
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if (ME_IsWhitespaces(run->strText))
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run->nFlags |= MERF_WHITESPACE | MERF_STARTWHITE | MERF_ENDWHITE;
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else
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{
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run->nFlags &= ~MERF_WHITESPACE;
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if (ME_IsWSpace(ME_GetCharFwd(run->strText,0)))
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run->nFlags |= MERF_STARTWHITE;
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else
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run->nFlags &= ~MERF_STARTWHITE;
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if (ME_IsWSpace(ME_GetCharBack(run->strText,0)))
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run->nFlags |= MERF_ENDWHITE;
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else
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run->nFlags &= ~MERF_ENDWHITE;
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}
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}
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else
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run->nFlags &= ~(MERF_WHITESPACE | MERF_STARTWHITE | MERF_ENDWHITE);
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}
|
|
|
|
/******************************************************************************
|
|
* ME_GetGraphicsSize
|
|
*
|
|
* Sets run extent for graphics runs. This functionality is just a placeholder
|
|
* for future OLE object support, and will be removed.
|
|
*/
|
|
void ME_GetGraphicsSize(ME_TextEditor *editor, ME_Run *run, SIZE *pSize)
|
|
{
|
|
assert(run->nFlags & MERF_GRAPHICS);
|
|
pSize->cx = 64;
|
|
pSize->cy = 64;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_CharFromPoint
|
|
*
|
|
* Returns a character position inside the run given a run-relative
|
|
* pixel horizontal position. This version rounds left (ie. if the second
|
|
* character is at pixel position 8, then for cx=0..7 it returns 0).
|
|
*/
|
|
int ME_CharFromPoint(ME_TextEditor *editor, int cx, ME_Run *run)
|
|
{
|
|
int fit = 0;
|
|
HGDIOBJ hOldFont;
|
|
HDC hDC;
|
|
SIZE sz;
|
|
if (!run->strText->nLen)
|
|
return 0;
|
|
|
|
if (run->nFlags & (MERF_TAB | MERF_CELL))
|
|
{
|
|
if (cx < run->nWidth/2)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
if (run->nFlags & MERF_GRAPHICS)
|
|
{
|
|
SIZE sz;
|
|
ME_GetGraphicsSize(editor, run, &sz);
|
|
if (cx < sz.cx)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
hDC = GetDC(editor->hWnd);
|
|
hOldFont = ME_SelectStyleFont(editor, hDC, run->style);
|
|
|
|
if (editor->cPasswordMask)
|
|
{
|
|
ME_String *strMasked = ME_MakeStringR(editor->cPasswordMask,ME_StrVLen(run->strText));
|
|
GetTextExtentExPointW(hDC, strMasked->szData, run->strText->nLen,
|
|
cx, &fit, NULL, &sz);
|
|
ME_DestroyString(strMasked);
|
|
}
|
|
else
|
|
{
|
|
GetTextExtentExPointW(hDC, run->strText->szData, run->strText->nLen,
|
|
cx, &fit, NULL, &sz);
|
|
}
|
|
|
|
ME_UnselectStyleFont(editor, hDC, run->style, hOldFont);
|
|
ReleaseDC(editor->hWnd, hDC);
|
|
return fit;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_CharFromPointCursor
|
|
*
|
|
* Returns a character position inside the run given a run-relative
|
|
* pixel horizontal position. This version rounds to the nearest character edge
|
|
* (ie. if the second character is at pixel position 8, then for cx=0..3
|
|
* it returns 0, and for cx=4..7 it returns 1).
|
|
*
|
|
* It is used for mouse click handling, for better usability (and compatibility
|
|
* with the native control).
|
|
*/
|
|
int ME_CharFromPointCursor(ME_TextEditor *editor, int cx, ME_Run *run)
|
|
{
|
|
ME_String *strRunText;
|
|
/* This could point to either the run's real text, or it's masked form in a password control */
|
|
|
|
int fit = 0, fit1 = 0;
|
|
HGDIOBJ hOldFont;
|
|
HDC hDC;
|
|
SIZE sz, sz2, sz3;
|
|
if (!run->strText->nLen)
|
|
return 0;
|
|
|
|
if (run->nFlags & (MERF_TAB | MERF_CELL))
|
|
{
|
|
if (cx < run->nWidth/2)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
if (run->nFlags & MERF_GRAPHICS)
|
|
{
|
|
SIZE sz;
|
|
ME_GetGraphicsSize(editor, run, &sz);
|
|
if (cx < sz.cx/2)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
if (editor->cPasswordMask)
|
|
strRunText = ME_MakeStringR(editor->cPasswordMask,ME_StrVLen(run->strText));
|
|
else
|
|
strRunText = run->strText;
|
|
|
|
hDC = GetDC(editor->hWnd);
|
|
hOldFont = ME_SelectStyleFont(editor, hDC, run->style);
|
|
GetTextExtentExPointW(hDC, strRunText->szData, strRunText->nLen,
|
|
cx, &fit, NULL, &sz);
|
|
if (fit != strRunText->nLen)
|
|
{
|
|
int chars = 1;
|
|
|
|
GetTextExtentPoint32W(hDC, strRunText->szData, fit, &sz2);
|
|
fit1 = ME_StrRelPos(strRunText, fit, &chars);
|
|
GetTextExtentPoint32W(hDC, strRunText->szData, fit1, &sz3);
|
|
if (cx >= (sz2.cx+sz3.cx)/2)
|
|
fit = fit1;
|
|
}
|
|
|
|
if (editor->cPasswordMask)
|
|
ME_DestroyString(strRunText);
|
|
|
|
ME_UnselectStyleFont(editor, hDC, run->style, hOldFont);
|
|
ReleaseDC(editor->hWnd, hDC);
|
|
return fit;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_PointFromChar
|
|
*
|
|
* Returns a run-relative pixel position given a run-relative character
|
|
* position (character offset)
|
|
*/
|
|
int ME_PointFromChar(ME_TextEditor *editor, ME_Run *pRun, int nOffset)
|
|
{
|
|
SIZE size;
|
|
HDC hDC = GetDC(editor->hWnd);
|
|
HGDIOBJ hOldFont;
|
|
ME_String *strRunText;
|
|
/* This could point to either the run's real text, or it's masked form in a password control */
|
|
|
|
if (pRun->nFlags & MERF_GRAPHICS)
|
|
{
|
|
if (!nOffset) return 0;
|
|
ME_GetGraphicsSize(editor, pRun, &size);
|
|
return 1;
|
|
}
|
|
|
|
if (editor->cPasswordMask)
|
|
strRunText = ME_MakeStringR(editor->cPasswordMask,ME_StrVLen(pRun->strText));
|
|
else
|
|
strRunText = pRun->strText;
|
|
|
|
hOldFont = ME_SelectStyleFont(editor, hDC, pRun->style);
|
|
GetTextExtentPoint32W(hDC, strRunText->szData, nOffset, &size);
|
|
ME_UnselectStyleFont(editor, hDC, pRun->style, hOldFont);
|
|
ReleaseDC(editor->hWnd, hDC);
|
|
if (editor->cPasswordMask)
|
|
ME_DestroyString(strRunText);
|
|
return size.cx;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_GetTextExtent
|
|
*
|
|
* Finds a width and a height of the text using a specified style
|
|
*/
|
|
static void ME_GetTextExtent(ME_Context *c, LPCWSTR szText, int nChars, ME_Style *s, SIZE *size)
|
|
{
|
|
HDC hDC = c->hDC;
|
|
HGDIOBJ hOldFont;
|
|
hOldFont = ME_SelectStyleFont(c->editor, hDC, s);
|
|
GetTextExtentPoint32W(hDC, szText, nChars, size);
|
|
ME_UnselectStyleFont(c->editor, hDC, s, hOldFont);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_GetRunSizeCommon
|
|
*
|
|
* Finds width, height, ascent and descent of a run, up to given character
|
|
* (nLen).
|
|
*/
|
|
static SIZE ME_GetRunSizeCommon(ME_Context *c, ME_Paragraph *para, ME_Run *run, int nLen,
|
|
int *pAscent, int *pDescent)
|
|
{
|
|
SIZE size;
|
|
int nMaxLen = ME_StrVLen(run->strText);
|
|
|
|
if (nLen>nMaxLen)
|
|
nLen = nMaxLen;
|
|
|
|
/* FIXME the following call also ensures that TEXTMETRIC structure is filled
|
|
* this is wasteful for MERF_NONTEXT runs, but that shouldn't matter
|
|
* in practice
|
|
*/
|
|
|
|
if (c->editor->cPasswordMask)
|
|
{
|
|
ME_String *szMasked = ME_MakeStringR(c->editor->cPasswordMask,nLen);
|
|
ME_GetTextExtent(c, szMasked->szData, nLen,run->style, &size);
|
|
ME_DestroyString(szMasked);
|
|
}
|
|
else
|
|
{
|
|
ME_GetTextExtent(c, run->strText->szData, nLen, run->style, &size);
|
|
}
|
|
*pAscent = run->style->tm.tmAscent;
|
|
*pDescent = run->style->tm.tmDescent;
|
|
size.cy = *pAscent + *pDescent;
|
|
|
|
if (run->nFlags & MERF_TAB)
|
|
{
|
|
int pos = 0, i = 0, ppos;
|
|
int lpsx = GetDeviceCaps(c->hDC, LOGPIXELSX);
|
|
PARAFORMAT2 *pFmt = para->pFmt;
|
|
do {
|
|
if (i < pFmt->cTabCount)
|
|
{
|
|
pos = pFmt->rgxTabs[i]&0x00FFFFFF;
|
|
i++;
|
|
}
|
|
else
|
|
{
|
|
pos += 720-(pos%720);
|
|
}
|
|
ppos = pos*lpsx/1440;
|
|
if (ppos>run->pt.x) {
|
|
size.cx = ppos - run->pt.x;
|
|
break;
|
|
}
|
|
} while(1);
|
|
size.cy = *pAscent + *pDescent;
|
|
return size;
|
|
}
|
|
if (run->nFlags & MERF_GRAPHICS)
|
|
{
|
|
ME_GetGraphicsSize(c->editor, run, &size);
|
|
if (size.cy > *pAscent)
|
|
*pAscent = size.cy;
|
|
/* descent is unchanged */
|
|
return size;
|
|
}
|
|
if (run->nFlags & MERF_CELL)
|
|
{
|
|
int lpsx = GetDeviceCaps(c->hDC, LOGPIXELSX);
|
|
|
|
size.cx = run->pCell->nRightBoundary * lpsx / 1440 - run->pt.x;
|
|
return size;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_GetRunSize
|
|
*
|
|
* Finds width and height (but not ascent and descent) of a part of the run
|
|
* up to given character.
|
|
*/
|
|
SIZE ME_GetRunSize(ME_Context *c, ME_Paragraph *para, ME_Run *run, int nLen)
|
|
{
|
|
int asc, desc;
|
|
return ME_GetRunSizeCommon(c, para, run, nLen, &asc, &desc);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_CalcRunExtent
|
|
*
|
|
* Updates the size of the run (fills width, ascent and descent). The height
|
|
* is calculated based on whole row's ascent and descent anyway, so no need
|
|
* to use it here.
|
|
*/
|
|
void ME_CalcRunExtent(ME_Context *c, ME_Paragraph *para, ME_Run *run)
|
|
{
|
|
if (run->nFlags & MERF_HIDDEN)
|
|
run->nWidth = 0;
|
|
else
|
|
{
|
|
int nEnd = ME_StrVLen(run->strText);
|
|
SIZE size = ME_GetRunSizeCommon(c, para, run, nEnd, &run->nAscent, &run->nDescent);
|
|
run->nWidth = size.cx;
|
|
if (!size.cx)
|
|
WARN("size.cx == 0\n");
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_MustBeWrapped
|
|
*
|
|
* This should ensure that the given paragraph is wrapped so that its screen
|
|
* row structure may be used. But it doesn't, yet.
|
|
*/
|
|
void ME_MustBeWrapped(ME_Context *c, ME_DisplayItem *para)
|
|
{
|
|
assert(para->type == diParagraph);
|
|
/* FIXME */
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_SetSelectionCharFormat
|
|
*
|
|
* Applies a style change, either to a current selection, or to insert cursor
|
|
* (ie. the style next typed characters will use).
|
|
*/
|
|
void ME_SetSelectionCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt)
|
|
{
|
|
int nFrom, nTo;
|
|
ME_GetSelection(editor, &nFrom, &nTo);
|
|
if (nFrom == nTo)
|
|
{
|
|
ME_Style *s;
|
|
if (!editor->pBuffer->pCharStyle)
|
|
editor->pBuffer->pCharStyle = ME_GetInsertStyle(editor, 0);
|
|
s = ME_ApplyStyle(editor->pBuffer->pCharStyle, pFmt);
|
|
ME_ReleaseStyle(editor->pBuffer->pCharStyle);
|
|
editor->pBuffer->pCharStyle = s;
|
|
}
|
|
else
|
|
ME_SetCharFormat(editor, nFrom, nTo-nFrom, pFmt);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_SetCharFormat
|
|
*
|
|
* Applies a style change to the specified part of the text
|
|
*/
|
|
void ME_SetCharFormat(ME_TextEditor *editor, int nOfs, int nChars, CHARFORMAT2W *pFmt)
|
|
{
|
|
ME_Cursor tmp, tmp2;
|
|
ME_DisplayItem *para;
|
|
|
|
ME_CursorFromCharOfs(editor, nOfs, &tmp);
|
|
if (tmp.nOffset)
|
|
tmp.pRun = ME_SplitRunSimple(editor, tmp.pRun, tmp.nOffset);
|
|
|
|
ME_CursorFromCharOfs(editor, nOfs+nChars, &tmp2);
|
|
if (tmp2.nOffset)
|
|
tmp2.pRun = ME_SplitRunSimple(editor, tmp2.pRun, tmp2.nOffset);
|
|
|
|
para = ME_GetParagraph(tmp.pRun);
|
|
para->member.para.nFlags |= MEPF_REWRAP;
|
|
|
|
while(tmp.pRun != tmp2.pRun)
|
|
{
|
|
ME_UndoItem *undo = NULL;
|
|
ME_Style *new_style = ME_ApplyStyle(tmp.pRun->member.run.style, pFmt);
|
|
/* ME_DumpStyle(new_style); */
|
|
undo = ME_AddUndoItem(editor, diUndoSetCharFormat, NULL);
|
|
if (undo) {
|
|
undo->nStart = tmp.pRun->member.run.nCharOfs+para->member.para.nCharOfs;
|
|
undo->nLen = tmp.pRun->member.run.strText->nLen;
|
|
undo->di.member.ustyle = tmp.pRun->member.run.style;
|
|
/* we'd have to addref undo..ustyle and release tmp...style
|
|
but they'd cancel each other out so we can do nothing instead */
|
|
}
|
|
else
|
|
ME_ReleaseStyle(tmp.pRun->member.run.style);
|
|
tmp.pRun->member.run.style = new_style;
|
|
tmp.pRun = ME_FindItemFwd(tmp.pRun, diRunOrParagraph);
|
|
if (tmp.pRun->type == diParagraph)
|
|
{
|
|
para = tmp.pRun;
|
|
tmp.pRun = ME_FindItemFwd(tmp.pRun, diRun);
|
|
if (tmp.pRun != tmp2.pRun)
|
|
para->member.para.nFlags |= MEPF_REWRAP;
|
|
}
|
|
assert(tmp.pRun);
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_SetDefaultCharFormat
|
|
*
|
|
* Applies a style change to the default character style.
|
|
*/
|
|
void ME_SetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *mod)
|
|
{
|
|
ME_Style *style;
|
|
ME_UndoItem *undo;
|
|
|
|
assert(mod->cbSize == sizeof(CHARFORMAT2W));
|
|
undo = ME_AddUndoItem(editor, diUndoSetDefaultCharFormat, NULL);
|
|
if (undo) {
|
|
undo->nStart = -1;
|
|
undo->nLen = -1;
|
|
undo->di.member.ustyle = editor->pBuffer->pDefaultStyle;
|
|
ME_AddRefStyle(undo->di.member.ustyle);
|
|
}
|
|
style = ME_ApplyStyle(editor->pBuffer->pDefaultStyle, mod);
|
|
editor->pBuffer->pDefaultStyle->fmt = style->fmt;
|
|
editor->pBuffer->pDefaultStyle->tm = style->tm;
|
|
ME_ReleaseStyle(style);
|
|
ME_MarkAllForWrapping(editor);
|
|
/* pcf = editor->pBuffer->pDefaultStyle->fmt; */
|
|
}
|
|
|
|
static void ME_GetRunCharFormat(ME_TextEditor *editor, ME_DisplayItem *run, CHARFORMAT2W *pFmt)
|
|
{
|
|
ME_CopyCharFormat(pFmt, &run->member.run.style->fmt);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_GetDefaultCharFormat
|
|
*
|
|
* Retrieves the current default character style (the one applied where no
|
|
* other style was applied) .
|
|
*/
|
|
void ME_GetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt)
|
|
{
|
|
int nFrom, nTo;
|
|
ME_GetSelection(editor, &nFrom, &nTo);
|
|
ME_CopyCharFormat(pFmt, &editor->pBuffer->pDefaultStyle->fmt);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_GetSelectionCharFormat
|
|
*
|
|
* If selection exists, it returns all style elements that are set consistently
|
|
* in the whole selection. If not, it just returns the current style.
|
|
*/
|
|
void ME_GetSelectionCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt)
|
|
{
|
|
int nFrom, nTo;
|
|
ME_GetSelection(editor, &nFrom, &nTo);
|
|
if (nFrom == nTo && editor->pBuffer->pCharStyle)
|
|
{
|
|
ME_CopyCharFormat(pFmt, &editor->pBuffer->pCharStyle->fmt);
|
|
return;
|
|
}
|
|
ME_GetCharFormat(editor, nFrom, nTo, pFmt);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_GetCharFormat
|
|
*
|
|
* Returns the style consisting of those attributes which are consistently set
|
|
* 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);
|
|
if (nFrom == nTo) /* special case - if selection is empty, take previous char's formatting */
|
|
{
|
|
if (!nOffset)
|
|
{
|
|
ME_DisplayItem *tmp_run = ME_FindItemBack(run, diRunOrParagraph);
|
|
if (tmp_run->type == diRun) {
|
|
ME_GetRunCharFormat(editor, tmp_run, pFmt);
|
|
return;
|
|
}
|
|
}
|
|
ME_GetRunCharFormat(editor, run, pFmt);
|
|
return;
|
|
}
|
|
|
|
if (nTo>nFrom) /* selection consists of chars from nFrom up to nTo-1 */
|
|
nTo--;
|
|
ME_RunOfsFromCharOfs(editor, nTo, &run_end, &nOffset2);
|
|
|
|
ME_GetRunCharFormat(editor, run, pFmt);
|
|
|
|
if (run == run_end) return;
|
|
|
|
do {
|
|
/* FIXME add more style feature comparisons */
|
|
int nAttribs = CFM_SIZE | CFM_FACE | CFM_COLOR;
|
|
int nEffects = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE;
|
|
|
|
run = ME_FindItemFwd(run, diRun);
|
|
|
|
ZeroMemory(&tmp, sizeof(tmp));
|
|
tmp.cbSize = sizeof(tmp);
|
|
ME_GetRunCharFormat(editor, run, &tmp);
|
|
|
|
assert((tmp.dwMask & nAttribs) == nAttribs);
|
|
assert((tmp.dwMask & nEffects) == nEffects);
|
|
/* reset flags that differ */
|
|
|
|
if (pFmt->yHeight != tmp.yHeight)
|
|
pFmt->dwMask &= ~CFM_SIZE;
|
|
if (pFmt->dwMask & CFM_FACE)
|
|
{
|
|
if (!(tmp.dwMask & CFM_FACE))
|
|
pFmt->dwMask &= ~CFM_FACE;
|
|
else if (lstrcmpW(pFmt->szFaceName, tmp.szFaceName))
|
|
pFmt->dwMask &= ~CFM_FACE;
|
|
}
|
|
if (pFmt->yHeight != tmp.yHeight)
|
|
pFmt->dwMask &= ~CFM_SIZE;
|
|
if (pFmt->dwMask & CFM_COLOR)
|
|
{
|
|
if (!((pFmt->dwEffects&CFE_AUTOCOLOR) & (tmp.dwEffects&CFE_AUTOCOLOR)))
|
|
{
|
|
if (pFmt->crTextColor != tmp.crTextColor)
|
|
pFmt->dwMask &= ~CFM_COLOR;
|
|
}
|
|
}
|
|
|
|
pFmt->dwMask &= ~((pFmt->dwEffects ^ tmp.dwEffects) & nEffects);
|
|
|
|
} while(run != run_end);
|
|
}
|