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885 lines
27 KiB
C
885 lines
27 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 TRUE if two runs can be safely merged into one, FALSE otherwise.
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*/
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BOOL ME_CanJoinRuns(const ME_Run *run1, const ME_Run *run2)
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{
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if ((run1->nFlags | run2->nFlags) & MERF_NOJOIN)
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return FALSE;
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if (run1->style != run2->style)
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return FALSE;
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if ((run1->nFlags & MERF_STYLEFLAGS) != (run2->nFlags & MERF_STYLEFLAGS))
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return FALSE;
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return TRUE;
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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_run( &p->member.run ), 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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TRACE_(richedit_check)("Checking begin\n");
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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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TRACE_(richedit_check)("Checking finished\n");
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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.len, debugstr_run( &p->member.run ),
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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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assert(p->member.run.len);
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ofs += p->member.run.len;
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break;
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case diCell:
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TRACE_(richedit_check)("cell\n");
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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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TRACE_(richedit_check)("Checking finished\n");
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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, const ME_DisplayItem *pPara,
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const ME_DisplayItem *pRun, int nOfs)
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{
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assert(pRun && pRun->type == diRun);
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assert(pPara && pPara->type == diParagraph);
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return pPara->member.para.nCharOfs + pRun->member.run.nCharOfs + 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->pPara,
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&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,
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int nCharOfs,
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ME_DisplayItem **ppPara,
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ME_DisplayItem **ppRun,
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int *pOfs)
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{
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ME_DisplayItem *item, *next_item;
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nCharOfs = max(nCharOfs, 0);
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nCharOfs = min(nCharOfs, ME_GetTextLength(editor));
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/* Find the paragraph at the offset. */
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next_item = editor->pBuffer->pFirst->member.para.next_para;
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do {
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item = next_item;
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next_item = item->member.para.next_para;
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} while (next_item->member.para.nCharOfs <= nCharOfs);
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assert(item->type == diParagraph);
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nCharOfs -= item->member.para.nCharOfs;
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if (ppPara) *ppPara = item;
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/* Find the run at the offset. */
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next_item = ME_FindItemFwd(item, diRun);
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do {
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item = next_item;
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next_item = ME_FindItemFwd(item, diRunOrParagraphOrEnd);
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} while (next_item->type == diRun &&
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next_item->member.run.nCharOfs <= nCharOfs);
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assert(item->type == diRun);
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nCharOfs -= item->member.run.nCharOfs;
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if (ppRun) *ppRun = item;
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if (pOfs) *pOfs = nCharOfs;
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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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/* 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 += p->member.run.len;
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}
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}
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p->member.run.len += pNext->member.run.len;
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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_check))
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ME_CheckCharOffsets(editor);
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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_Cursor *cursor)
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{
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ME_DisplayItem *run = cursor->pRun;
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ME_DisplayItem *new_run;
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int i;
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int nOffset = cursor->nOffset;
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assert(!(run->member.run.nFlags & MERF_NONTEXT));
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new_run = ME_MakeRun(run->member.run.style,
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run->member.run.nFlags & MERF_SPLITMASK);
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new_run->member.run.nCharOfs = run->member.run.nCharOfs + nOffset;
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new_run->member.run.len = run->member.run.len - nOffset;
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new_run->member.run.para = run->member.run.para;
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run->member.run.len = nOffset;
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cursor->pRun = new_run;
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cursor->nOffset = 0;
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ME_InsertBefore(run->next, new_run);
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ME_UpdateRunFlags(editor, &run->member.run);
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ME_UpdateRunFlags(editor, &new_run->member.run);
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for (i = 0; i < editor->nCursors; i++) {
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if (editor->pCursors[i].pRun == run &&
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editor->pCursors[i].nOffset >= nOffset) {
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editor->pCursors[i].pRun = new_run;
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editor->pCursors[i].nOffset -= nOffset;
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}
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}
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cursor->pPara->member.para.nFlags |= MEPF_REWRAP;
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return run;
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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, 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.ole_obj = NULL;
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item->member.run.nFlags = nFlags;
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item->member.run.nCharOfs = -1;
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item->member.run.len = 0;
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item->member.run.para = NULL;
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item->member.run.num_glyphs = 0;
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item->member.run.max_glyphs = 0;
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item->member.run.glyphs = NULL;
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item->member.run.vis_attrs = NULL;
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item->member.run.advances = NULL;
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item->member.run.offsets = NULL;
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item->member.run.max_clusters = 0;
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item->member.run.clusters = NULL;
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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_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, *insert_before = cursor->pRun, *prev;
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if (cursor->nOffset)
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{
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if (cursor->nOffset == cursor->pRun->member.run.len)
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{
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insert_before = ME_FindItemFwd( cursor->pRun, diRun );
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if (!insert_before) insert_before = cursor->pRun; /* Always insert before the final eop run */
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}
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else
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{
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ME_SplitRunSimple( editor, cursor );
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insert_before = cursor->pRun;
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}
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}
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add_undo_delete_run( editor, insert_before->member.run.para->nCharOfs +
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insert_before->member.run.nCharOfs, len );
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pDI = ME_MakeRun(style, flags);
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pDI->member.run.nCharOfs = insert_before->member.run.nCharOfs;
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pDI->member.run.len = len;
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pDI->member.run.para = insert_before->member.run.para;
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ME_InsertString( pDI->member.run.para->text, pDI->member.run.nCharOfs, str, len );
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ME_InsertBefore( insert_before, pDI );
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TRACE("Shift length:%d\n", len);
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ME_PropagateCharOffset( insert_before, len );
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insert_before->member.run.para->nFlags |= MEPF_REWRAP;
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/* Move any cursors that were at the end of the previous run to the end of the inserted run */
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prev = ME_FindItemBack( pDI, diRun );
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if (prev)
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{
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int i;
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for (i = 0; i < editor->nCursors; i++)
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{
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if (editor->pCursors[i].pRun == prev &&
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editor->pCursors[i].nOffset == prev->member.run.len)
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{
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editor->pCursors[i].pRun = pDI;
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editor->pCursors[i].nOffset = len;
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}
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}
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}
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return pDI;
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}
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static BOOL run_is_splittable( const ME_Run *run )
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{
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WCHAR *str = get_text( run, 0 ), *p;
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int i;
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BOOL found_ink = FALSE;
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for (i = 0, p = str; i < run->len; i++, p++)
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{
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if (ME_IsWSpace( *p ))
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{
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if (found_ink) return TRUE;
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}
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else
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found_ink = TRUE;
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}
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return FALSE;
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}
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static BOOL run_is_entirely_ws( const ME_Run *run )
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{
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WCHAR *str = get_text( run, 0 ), *p;
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int i;
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for (i = 0, p = str; i < run->len; i++, p++)
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if (!ME_IsWSpace( *p )) return FALSE;
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return TRUE;
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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 >= 0);
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if (RUN_IS_HIDDEN(run) || run->nFlags & MERF_TABLESTART)
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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 (run_is_splittable( run ))
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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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{
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if (run_is_entirely_ws( run ))
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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( *get_text( run, 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( *get_text( run, run->len - 1 ) ))
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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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/******************************************************************************
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* ME_CharFromPointContext
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*
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* Returns a character position inside the run given a run-relative
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* pixel horizontal position.
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*
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* If closest is FALSE return the actual character
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* If closest is TRUE will round to the closest leading edge.
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* ie. if the second character is at pixel position 8 and third at 16 then for:
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* closest = FALSE cx = 0..7 return 0, cx = 8..15 return 1
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* closest = TRUE cx = 0..3 return 0, cx = 4..11 return 1.
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*/
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int ME_CharFromPointContext(ME_Context *c, int cx, ME_Run *run, BOOL closest, BOOL visual_order)
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{
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ME_String *mask_text = NULL;
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WCHAR *str;
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int fit = 0;
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HGDIOBJ hOldFont;
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SIZE sz, sz2, sz3;
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if (!run->len || cx <= 0)
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return 0;
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if (run->nFlags & (MERF_TAB | MERF_ENDCELL))
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{
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if (!closest || cx < run->nWidth / 2) return 0;
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return 1;
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}
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if (run->nFlags & MERF_GRAPHICS)
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{
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SIZE sz;
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ME_GetOLEObjectSize(c, run, &sz);
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if (!closest || cx < sz.cx / 2) return 0;
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return 1;
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}
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if (run->para->nFlags & MEPF_COMPLEX)
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{
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int cp, trailing;
|
|
if (visual_order && run->script_analysis.fRTL) cx = run->nWidth - cx - 1;
|
|
|
|
ScriptXtoCP( cx, run->len, run->num_glyphs, run->clusters, run->vis_attrs, run->advances, &run->script_analysis,
|
|
&cp, &trailing );
|
|
TRACE("x %d cp %d trailing %d (run width %d) rtl %d log order %d\n", cx, cp, trailing, run->nWidth,
|
|
run->script_analysis.fRTL, run->script_analysis.fLogicalOrder);
|
|
return closest ? cp + trailing : cp;
|
|
}
|
|
|
|
if (c->editor->cPasswordMask)
|
|
{
|
|
mask_text = ME_MakeStringR( c->editor->cPasswordMask, run->len );
|
|
str = mask_text->szData;
|
|
}
|
|
else
|
|
str = get_text( run, 0 );
|
|
|
|
hOldFont = ME_SelectStyleFont(c, run->style);
|
|
GetTextExtentExPointW(c->hDC, str, run->len,
|
|
cx, &fit, NULL, &sz);
|
|
if (closest && fit != run->len)
|
|
{
|
|
GetTextExtentPoint32W(c->hDC, str, fit, &sz2);
|
|
GetTextExtentPoint32W(c->hDC, str, fit + 1, &sz3);
|
|
if (cx >= (sz2.cx+sz3.cx)/2)
|
|
fit = fit + 1;
|
|
}
|
|
|
|
ME_DestroyString( mask_text );
|
|
|
|
ME_UnselectStyleFont(c, run->style, hOldFont);
|
|
return fit;
|
|
}
|
|
|
|
int ME_CharFromPoint(ME_TextEditor *editor, int cx, ME_Run *run, BOOL closest, BOOL visual_order)
|
|
{
|
|
ME_Context c;
|
|
int ret;
|
|
|
|
ME_InitContext( &c, editor, ITextHost_TxGetDC( editor->texthost ) );
|
|
ret = ME_CharFromPointContext( &c, cx, run, closest, visual_order );
|
|
ME_DestroyContext(&c);
|
|
return ret;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* 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)
|
|
{
|
|
HGDIOBJ hOldFont;
|
|
if (c->hDC) {
|
|
hOldFont = ME_SelectStyleFont(c, s);
|
|
GetTextExtentPoint32W(c->hDC, szText, nChars, size);
|
|
ME_UnselectStyleFont(c, s, hOldFont);
|
|
} else {
|
|
size->cx = 0;
|
|
size->cy = 0;
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_PointFromCharContext
|
|
*
|
|
* Returns a run-relative pixel position given a run-relative character
|
|
* position (character offset)
|
|
*/
|
|
int ME_PointFromCharContext(ME_Context *c, ME_Run *pRun, int nOffset, BOOL visual_order)
|
|
{
|
|
SIZE size;
|
|
ME_String *mask_text = NULL;
|
|
WCHAR *str;
|
|
|
|
if (pRun->nFlags & MERF_GRAPHICS)
|
|
{
|
|
if (nOffset)
|
|
ME_GetOLEObjectSize(c, pRun, &size);
|
|
return nOffset != 0;
|
|
} else if (pRun->nFlags & MERF_ENDPARA) {
|
|
nOffset = 0;
|
|
}
|
|
|
|
if (pRun->para->nFlags & MEPF_COMPLEX)
|
|
{
|
|
int x;
|
|
ScriptCPtoX( nOffset, FALSE, pRun->len, pRun->num_glyphs, pRun->clusters,
|
|
pRun->vis_attrs, pRun->advances, &pRun->script_analysis, &x );
|
|
if (visual_order && pRun->script_analysis.fRTL) x = pRun->nWidth - x - 1;
|
|
return x;
|
|
}
|
|
if (c->editor->cPasswordMask)
|
|
{
|
|
mask_text = ME_MakeStringR(c->editor->cPasswordMask, pRun->len);
|
|
str = mask_text->szData;
|
|
}
|
|
else
|
|
str = get_text( pRun, 0 );
|
|
|
|
ME_GetTextExtent(c, str, nOffset, pRun->style, &size);
|
|
ME_DestroyString( mask_text );
|
|
return size.cx;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_PointFromChar
|
|
*
|
|
* Calls ME_PointFromCharContext after first creating a context.
|
|
*/
|
|
int ME_PointFromChar(ME_TextEditor *editor, ME_Run *pRun, int nOffset, BOOL visual_order)
|
|
{
|
|
ME_Context c;
|
|
int ret;
|
|
|
|
ME_InitContext(&c, editor, ITextHost_TxGetDC(editor->texthost));
|
|
ret = ME_PointFromCharContext( &c, pRun, nOffset, visual_order );
|
|
ME_DestroyContext(&c);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_GetRunSizeCommon
|
|
*
|
|
* Finds width, height, ascent and descent of a run, up to given character
|
|
* (nLen).
|
|
*/
|
|
SIZE ME_GetRunSizeCommon(ME_Context *c, const ME_Paragraph *para, ME_Run *run, int nLen,
|
|
int startx, int *pAscent, int *pDescent)
|
|
{
|
|
SIZE size;
|
|
WCHAR spaceW[] = {' ',0};
|
|
|
|
nLen = min( nLen, run->len );
|
|
|
|
if (run->nFlags & MERF_ENDPARA)
|
|
{
|
|
nLen = min( nLen, 1 );
|
|
ME_GetTextExtent(c, spaceW, nLen, run->style, &size);
|
|
}
|
|
else if (para->nFlags & MEPF_COMPLEX)
|
|
{
|
|
size.cx = run->nWidth;
|
|
}
|
|
else 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, get_text( run, 0 ), 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, shift = 0;
|
|
const PARAFORMAT2 *pFmt = ¶->fmt;
|
|
|
|
if (c->editor->bEmulateVersion10 && /* v1.0 - 3.0 */
|
|
pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE)
|
|
/* The horizontal gap shifts the tab positions to leave the gap. */
|
|
shift = pFmt->dxOffset * 2;
|
|
do {
|
|
if (i < pFmt->cTabCount)
|
|
{
|
|
/* Only one side of the horizontal gap is needed at the end of
|
|
* the table row. */
|
|
if (i == pFmt->cTabCount -1)
|
|
shift = shift >> 1;
|
|
pos = shift + (pFmt->rgxTabs[i]&0x00FFFFFF);
|
|
i++;
|
|
}
|
|
else
|
|
{
|
|
pos += lDefaultTab - (pos % lDefaultTab);
|
|
}
|
|
ppos = ME_twips2pointsX(c, pos);
|
|
if (ppos > startx + run->pt.x) {
|
|
size.cx = ppos - startx - run->pt.x;
|
|
break;
|
|
}
|
|
} while(1);
|
|
size.cy = *pAscent + *pDescent;
|
|
return size;
|
|
}
|
|
if (run->nFlags & MERF_GRAPHICS)
|
|
{
|
|
ME_GetOLEObjectSize(c, run, &size);
|
|
if (size.cy > *pAscent)
|
|
*pAscent = size.cy;
|
|
/* descent is unchanged */
|
|
return size;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* 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)
|
|
{
|
|
if (!ME_IsSelection(editor))
|
|
{
|
|
ME_Style *s;
|
|
if (!editor->pBuffer->pCharStyle)
|
|
editor->pBuffer->pCharStyle = ME_GetInsertStyle(editor, 0);
|
|
s = ME_ApplyStyle(editor, editor->pBuffer->pCharStyle, pFmt);
|
|
ME_ReleaseStyle(editor->pBuffer->pCharStyle);
|
|
editor->pBuffer->pCharStyle = s;
|
|
} else {
|
|
ME_Cursor *from, *to;
|
|
ME_GetSelection(editor, &from, &to);
|
|
ME_SetCharFormat(editor, from, to, pFmt);
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ME_SetCharFormat
|
|
*
|
|
* Applies a style change to the specified part of the text
|
|
*
|
|
* The start and end cursors specify the part of the text. These cursors will
|
|
* be updated to stay valid, but this function may invalidate other
|
|
* non-selection cursors. The end cursor may be NULL to specify all the text
|
|
* following the start cursor.
|
|
*
|
|
* If no text is selected, then nothing is done.
|
|
*/
|
|
void ME_SetCharFormat(ME_TextEditor *editor, ME_Cursor *start, ME_Cursor *end, CHARFORMAT2W *pFmt)
|
|
{
|
|
ME_DisplayItem *run, *start_run = start->pRun, *end_run = NULL;
|
|
|
|
if (end && start->pRun == end->pRun && start->nOffset == end->nOffset)
|
|
return;
|
|
|
|
if (start->nOffset == start->pRun->member.run.len)
|
|
start_run = ME_FindItemFwd( start->pRun, diRun );
|
|
else if (start->nOffset)
|
|
{
|
|
/* SplitRunSimple may or may not update the cursors, depending on whether they
|
|
* are selection cursors, but we need to make sure they are valid. */
|
|
int split_offset = start->nOffset;
|
|
ME_DisplayItem *split_run = ME_SplitRunSimple(editor, start);
|
|
start_run = start->pRun;
|
|
if (end && end->pRun == split_run)
|
|
{
|
|
end->pRun = start->pRun;
|
|
end->nOffset -= split_offset;
|
|
}
|
|
}
|
|
|
|
if (end)
|
|
{
|
|
if (end->nOffset == end->pRun->member.run.len)
|
|
end_run = ME_FindItemFwd( end->pRun, diRun );
|
|
else
|
|
{
|
|
if (end->nOffset) ME_SplitRunSimple(editor, end);
|
|
end_run = end->pRun;
|
|
}
|
|
}
|
|
|
|
for (run = start_run; run != end_run; run = ME_FindItemFwd( run, diRun ))
|
|
{
|
|
ME_Style *new_style = ME_ApplyStyle(editor, run->member.run.style, pFmt);
|
|
ME_Paragraph *para = run->member.run.para;
|
|
|
|
add_undo_set_char_fmt( editor, run->member.run.para->nCharOfs + run->member.run.nCharOfs,
|
|
run->member.run.len, &run->member.run.style->fmt );
|
|
ME_ReleaseStyle(run->member.run.style);
|
|
run->member.run.style = new_style;
|
|
|
|
/* The para numbering style depends on the eop style */
|
|
if ((run->member.run.nFlags & MERF_ENDPARA) && para->para_num.style)
|
|
{
|
|
ME_ReleaseStyle(para->para_num.style);
|
|
para->para_num.style = NULL;
|
|
}
|
|
para->nFlags |= MEPF_REWRAP;
|
|
}
|
|
}
|
|
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
ME_Cursor *from, *to;
|
|
if (!ME_IsSelection(editor) && editor->pBuffer->pCharStyle)
|
|
{
|
|
ME_CopyCharFormat(pFmt, &editor->pBuffer->pCharStyle->fmt);
|
|
return;
|
|
}
|
|
ME_GetSelection(editor, &from, &to);
|
|
ME_GetCharFormat(editor, from, to, 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, const ME_Cursor *from,
|
|
const ME_Cursor *to, CHARFORMAT2W *pFmt)
|
|
{
|
|
ME_DisplayItem *run, *run_end;
|
|
CHARFORMAT2W tmp;
|
|
|
|
run = from->pRun;
|
|
/* special case - if selection is empty, take previous char's formatting */
|
|
if (from->pRun == to->pRun && from->nOffset == to->nOffset)
|
|
{
|
|
if (!from->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;
|
|
}
|
|
|
|
run_end = to->pRun;
|
|
if (!to->nOffset)
|
|
run_end = ME_FindItemBack(run_end, diRun);
|
|
|
|
ME_GetRunCharFormat(editor, run, pFmt);
|
|
|
|
if (run == run_end) return;
|
|
|
|
do {
|
|
/* FIXME add more style feature comparisons */
|
|
DWORD dwAttribs = CFM_SIZE | CFM_FACE | CFM_COLOR | CFM_UNDERLINETYPE;
|
|
DWORD dwEffects = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_PROTECTED | CFM_LINK | CFM_SUPERSCRIPT;
|
|
|
|
run = ME_FindItemFwd(run, diRun);
|
|
|
|
ZeroMemory(&tmp, sizeof(tmp));
|
|
tmp.cbSize = sizeof(tmp);
|
|
ME_GetRunCharFormat(editor, run, &tmp);
|
|
|
|
assert((tmp.dwMask & dwAttribs) == dwAttribs);
|
|
/* 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->bPitchAndFamily != tmp.bPitchAndFamily)
|
|
pFmt->dwMask &= ~CFM_FACE;
|
|
}
|
|
if (pFmt->yHeight != tmp.yHeight)
|
|
pFmt->dwMask &= ~CFM_SIZE;
|
|
if (pFmt->bUnderlineType != tmp.bUnderlineType)
|
|
pFmt->dwMask &= ~CFM_UNDERLINETYPE;
|
|
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) & dwEffects);
|
|
pFmt->dwEffects = tmp.dwEffects;
|
|
|
|
} while(run != run_end);
|
|
}
|