673 lines
19 KiB
C
673 lines
19 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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*
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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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int ME_CanJoinRuns(ME_Run *run1, ME_Run *run2)
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{
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if ((run1->nFlags | run2->nFlags) & (MERF_ENDPARA | MERF_GRAPHICS))
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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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void ME_PropagateCharOffset(ME_DisplayItem *p, int shift)
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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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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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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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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))
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{
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TRACE("---\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("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("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("run, real ofs = %d (+ofsp = %d), counted = %d, len = %d, txt = \"%s\", flags=%08x, fx&mask = %08lx\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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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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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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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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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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*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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if (nCharOfs == nParaOfs + (*ppRun)->member.run.nCharOfs) {
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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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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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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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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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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(%ld, %ld)\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, run);
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ME_CalcRunExtent(c, 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(%ld, %ld), %s(%ld, %ld)\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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/* split a run starting from voffset */
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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_GRAPHICS));
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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_WRAPPED;
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return item2;
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}
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/* split the start and final whitespace into separate runs */
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/* returns the last run added */
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/*
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ME_DisplayItem *ME_SplitFurther(ME_TextEditor *editor, ME_DisplayItem *item)
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{
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int i, nVLen, nChanged;
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assert(item->type == diRun);
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assert(!(item->member.run.nFlags & MERF_GRAPHICS));
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return item;
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}
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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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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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ME_UndoItem *pUI;
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assert(pItem->type == diRun || pItem->type == diUndoInsertRun);
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pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
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pUI->nStart = nCharOfs;
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pUI->nLen = pItem->member.run.strText->nLen;
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ME_CursorFromCharOfs(editor, nCharOfs, &tmp);
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if (tmp.nOffset) {
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tmp.pRun = ME_SplitRunSimple(editor, tmp.pRun, tmp.nOffset);
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tmp.nOffset = 0;
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}
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pDI = ME_MakeRun(pItem->member.run.style, ME_StrDup(pItem->member.run.strText), pItem->member.run.nFlags);
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pDI->member.run.nCharOfs = tmp.pRun->member.run.nCharOfs;
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ME_InsertBefore(tmp.pRun, pDI);
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TRACE("Shift length:%d\n", pDI->member.run.strText->nLen);
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ME_PropagateCharOffset(tmp.pRun, pDI->member.run.strText->nLen);
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ME_GetParagraph(tmp.pRun)->member.para.nFlags &= ~MEPF_WRAPPED;
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return pDI;
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}
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static inline int ME_IsWSpace(WCHAR ch)
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{
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return ch <= ' ';
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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 (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_GRAPHICS)) {
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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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}
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void ME_GetGraphicsSize(ME_TextEditor *editor, ME_Run *run, SIZE *pSize)
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{
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assert(run->nFlags & MERF_GRAPHICS);
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pSize->cx = 64;
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pSize->cy = 64;
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}
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int ME_CharFromPoint(ME_TextEditor *editor, int cx, ME_Run *run)
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{
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int fit = 0;
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HGDIOBJ hOldFont;
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HDC hDC;
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SIZE sz;
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if (!run->strText->nLen)
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return 0;
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if (run->nFlags & MERF_GRAPHICS)
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{
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SIZE sz;
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ME_GetGraphicsSize(editor, run, &sz);
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if (cx < sz.cx)
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return 0;
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return 1;
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}
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hDC = GetDC(editor->hWnd);
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hOldFont = ME_SelectStyleFont(hDC, run->style);
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GetTextExtentExPointW(hDC, run->strText->szData, run->strText->nLen,
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cx, &fit, NULL, &sz);
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assert(run->style->hFont);
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SelectObject(hDC, hOldFont);
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ReleaseDC(editor->hWnd, hDC);
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return fit;
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}
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int ME_CharFromPointCursor(ME_TextEditor *editor, int cx, ME_Run *run)
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{
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int fit = 0, fit1 = 0;
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HGDIOBJ hOldFont;
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HDC hDC;
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SIZE sz, sz2, sz3;
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if (!run->strText->nLen)
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return 0;
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if (run->nFlags & MERF_GRAPHICS)
|
||
|
{
|
||
|
SIZE sz;
|
||
|
ME_GetGraphicsSize(editor, run, &sz);
|
||
|
if (cx < sz.cx/2)
|
||
|
return 0;
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
hDC = GetDC(editor->hWnd);
|
||
|
hOldFont = ME_SelectStyleFont(hDC, run->style);
|
||
|
GetTextExtentExPointW(hDC, run->strText->szData, run->strText->nLen,
|
||
|
cx, &fit, NULL, &sz);
|
||
|
if (fit != run->strText->nLen)
|
||
|
{
|
||
|
int chars = 1;
|
||
|
|
||
|
GetTextExtentPoint32W(hDC, run->strText->szData, fit, &sz2);
|
||
|
fit1 = ME_StrRelPos(run->strText, fit, &chars);
|
||
|
GetTextExtentPoint32W(hDC, run->strText->szData, fit1, &sz3);
|
||
|
if (cx >= (sz2.cx+sz3.cx)/2)
|
||
|
fit = fit1;
|
||
|
}
|
||
|
SelectObject(hDC, hOldFont);
|
||
|
ReleaseDC(editor->hWnd, hDC);
|
||
|
return fit;
|
||
|
}
|
||
|
|
||
|
int ME_PointFromChar(ME_TextEditor *editor, ME_Run *pRun, int nOffset)
|
||
|
{
|
||
|
SIZE size;
|
||
|
HDC hDC = GetDC(editor->hWnd);
|
||
|
HGDIOBJ hOldFont;
|
||
|
|
||
|
if (pRun->nFlags & MERF_GRAPHICS)
|
||
|
{
|
||
|
if (!nOffset) return 0;
|
||
|
ME_GetGraphicsSize(editor, pRun, &size);
|
||
|
return 1;
|
||
|
}
|
||
|
hOldFont = ME_SelectStyleFont(hDC, pRun->style);
|
||
|
GetTextExtentPoint32W(hDC, pRun->strText->szData, nOffset, &size);
|
||
|
SelectObject(hDC, hOldFont);
|
||
|
ReleaseDC(editor->hWnd, hDC);
|
||
|
return size.cx;
|
||
|
}
|
||
|
|
||
|
void ME_GetTextExtent(ME_Context *c, LPCWSTR szText, int nChars, ME_Style *s,
|
||
|
SIZE *size)
|
||
|
{
|
||
|
HDC hDC = c->hDC;
|
||
|
HGDIOBJ hOldFont;
|
||
|
hOldFont = ME_SelectStyleFont(hDC, s);
|
||
|
GetTextExtentPoint32W(hDC, szText, nChars, size);
|
||
|
SelectObject(hDC, hOldFont);
|
||
|
}
|
||
|
|
||
|
SIZE ME_GetRunSize(ME_Context *c, ME_Run *run, int nLen)
|
||
|
{
|
||
|
SIZE size;
|
||
|
int nMaxLen = ME_StrVLen(run->strText);
|
||
|
|
||
|
if (nLen>nMaxLen)
|
||
|
nLen = nMaxLen;
|
||
|
|
||
|
if (run->nFlags & MERF_GRAPHICS)
|
||
|
{
|
||
|
ME_GetGraphicsSize(c->editor, run, &size);
|
||
|
return size;
|
||
|
}
|
||
|
|
||
|
ME_GetTextExtent(c, run->strText->szData, nLen, run->style, &size);
|
||
|
|
||
|
return size;
|
||
|
}
|
||
|
|
||
|
void ME_CalcRunExtent(ME_Context *c, ME_Run *run)
|
||
|
{
|
||
|
SIZE size;
|
||
|
int nEnd = ME_StrVLen(run->strText);
|
||
|
|
||
|
if (run->nFlags & MERF_GRAPHICS) {
|
||
|
ME_GetGraphicsSize(c->editor, run, &size);
|
||
|
run->nWidth = size.cx;
|
||
|
run->nAscent = size.cy;
|
||
|
run->nDescent = 0;
|
||
|
return;
|
||
|
}
|
||
|
ME_GetTextExtent(c, run->strText->szData, nEnd, run->style, &size);
|
||
|
run->nWidth = size.cx;
|
||
|
run->nAscent = run->style->tm.tmAscent;
|
||
|
run->nDescent = run->style->tm.tmDescent;
|
||
|
}
|
||
|
|
||
|
void ME_MustBeWrapped(ME_Context *c, ME_DisplayItem *para)
|
||
|
{
|
||
|
assert(para->type == diParagraph);
|
||
|
/* FIXME */
|
||
|
}
|
||
|
|
||
|
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);
|
||
|
}
|
||
|
|
||
|
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_WRAPPED;
|
||
|
|
||
|
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_WRAPPED;
|
||
|
}
|
||
|
assert(tmp.pRun);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
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; */
|
||
|
}
|
||
|
|
||
|
void ME_GetRunCharFormat(ME_TextEditor *editor, ME_DisplayItem *run, CHARFORMAT2W *pFmt)
|
||
|
{
|
||
|
ME_CopyCharFormat(pFmt, &run->member.run.style->fmt);
|
||
|
}
|
||
|
|
||
|
void ME_GetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt)
|
||
|
{
|
||
|
int nFrom, nTo;
|
||
|
ME_GetSelection(editor, &nFrom, &nTo);
|
||
|
ME_CopyCharFormat(pFmt, &editor->pBuffer->pDefaultStyle->fmt);
|
||
|
}
|
||
|
|
||
|
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);
|
||
|
}
|
||
|
|
||
|
void ME_GetCharFormat(ME_TextEditor *editor, int nFrom, int nTo, CHARFORMAT2W *pFmt)
|
||
|
{
|
||
|
ME_DisplayItem *run, *run_end;
|
||
|
int nOffset, nOffset2;
|
||
|
CHARFORMAT2W tmp;
|
||
|
|
||
|
if (nTo>nFrom) /* selection consists of chars from nFrom up to nTo-1 */
|
||
|
nTo--;
|
||
|
|
||
|
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;
|
||
|
}
|
||
|
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);
|
||
|
}
|