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1483 lines
42 KiB
C
1483 lines
42 KiB
C
/*
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* RichEdit - Caret and selection functions.
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*
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* Copyright 2004 by Krzysztof Foltman
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* Copyright 2005 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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void ME_SetCursorToStart(ME_TextEditor *editor, ME_Cursor *cursor)
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{
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cursor->para = editor_first_para( editor );
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cursor->run = para_first_run( cursor->para );
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cursor->nOffset = 0;
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}
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static void ME_SetCursorToEnd(ME_TextEditor *editor, ME_Cursor *cursor, BOOL final_eop)
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{
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cursor->para = para_prev( editor_end_para( editor ) );
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cursor->run = para_end_run( cursor->para );
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cursor->nOffset = final_eop ? cursor->run->len : 0;
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}
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int ME_GetSelectionOfs(ME_TextEditor *editor, LONG *from, LONG *to)
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{
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*from = ME_GetCursorOfs(&editor->pCursors[0]);
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*to = ME_GetCursorOfs(&editor->pCursors[1]);
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if (*from > *to)
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{
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LONG tmp = *from;
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*from = *to;
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*to = tmp;
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return 1;
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}
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return 0;
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}
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int ME_GetSelection(ME_TextEditor *editor, ME_Cursor **from, ME_Cursor **to)
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{
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int from_ofs = ME_GetCursorOfs( &editor->pCursors[0] );
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int to_ofs = ME_GetCursorOfs( &editor->pCursors[1] );
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BOOL swap = (from_ofs > to_ofs);
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if (from_ofs == to_ofs)
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{
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/* If cursor[0] is at the beginning of a run and cursor[1] at the end
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of the prev run then we need to swap. */
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if (editor->pCursors[0].nOffset < editor->pCursors[1].nOffset)
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swap = TRUE;
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}
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if (!swap)
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{
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*from = &editor->pCursors[0];
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*to = &editor->pCursors[1];
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return 0;
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} else {
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*from = &editor->pCursors[1];
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*to = &editor->pCursors[0];
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return 1;
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}
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}
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int ME_GetTextLength(ME_TextEditor *editor)
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{
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ME_Cursor cursor;
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ME_SetCursorToEnd(editor, &cursor, FALSE);
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return ME_GetCursorOfs(&cursor);
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}
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int ME_GetTextLengthEx(ME_TextEditor *editor, const GETTEXTLENGTHEX *how)
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{
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int length;
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if (how->flags & GTL_PRECISE && how->flags & GTL_CLOSE)
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return E_INVALIDARG;
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if (how->flags & GTL_NUMCHARS && how->flags & GTL_NUMBYTES)
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return E_INVALIDARG;
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length = ME_GetTextLength(editor);
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if ((editor->props & TXTBIT_MULTILINE)
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&& (how->flags & GTL_USECRLF)
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&& !editor->bEmulateVersion10) /* Ignore GTL_USECRLF flag in 1.0 emulation */
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length += editor->nParagraphs - 1;
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if (how->flags & GTL_NUMBYTES ||
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(how->flags & GTL_PRECISE && /* GTL_PRECISE seems to imply GTL_NUMBYTES */
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!(how->flags & GTL_NUMCHARS))) /* unless GTL_NUMCHARS is given */
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{
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CPINFO cpinfo;
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if (how->codepage == 1200)
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return length * 2;
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if (how->flags & GTL_PRECISE)
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FIXME("GTL_PRECISE flag unsupported. Using GTL_CLOSE\n");
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if (GetCPInfo(how->codepage, &cpinfo))
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return length * cpinfo.MaxCharSize;
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ERR("Invalid codepage %u\n", how->codepage);
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return E_INVALIDARG;
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}
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return length;
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}
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/******************************************************************
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* set_selection_cursors
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*
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* Updates the selection cursors.
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*
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* Note that this does not invalidate either the old or the new selections.
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*/
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int set_selection_cursors(ME_TextEditor *editor, int from, int to)
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{
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int selectionEnd = 0;
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const int len = ME_GetTextLength(editor);
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/* all negative values are effectively the same */
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if (from < 0)
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from = -1;
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if (to < 0)
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to = -1;
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/* select all */
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if (from == 0 && to == -1)
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{
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ME_SetCursorToStart(editor, &editor->pCursors[1]);
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ME_SetCursorToEnd(editor, &editor->pCursors[0], TRUE);
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return len + 1;
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}
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/* if both values are equal and also out of bound, that means to */
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/* put the selection at the end of the text */
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if ((from == to) && (to < 0 || to > len))
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{
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selectionEnd = 1;
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}
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else
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{
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/* if from is negative and to is positive then selection is */
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/* deselected and caret moved to end of the current selection */
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if (from < 0)
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{
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LONG start, end;
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ME_GetSelectionOfs(editor, &start, &end);
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if (start != end)
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{
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if (end > len)
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{
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editor->pCursors[0].nOffset = 0;
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end --;
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}
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editor->pCursors[1] = editor->pCursors[0];
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}
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return end;
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}
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/* adjust to if it's a negative value */
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if (to < 0)
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to = len + 1;
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/* flip from and to if they are reversed */
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if (from>to)
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{
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int tmp = from;
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from = to;
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to = tmp;
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}
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/* after fiddling with the values, we find from > len && to > len */
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if (from > len)
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selectionEnd = 1;
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/* special case with to too big */
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else if (to > len)
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to = len + 1;
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}
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if (selectionEnd)
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{
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ME_SetCursorToEnd(editor, &editor->pCursors[0], FALSE);
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editor->pCursors[1] = editor->pCursors[0];
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return len;
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}
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cursor_from_char_ofs( editor, from, &editor->pCursors[1] );
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editor->pCursors[0] = editor->pCursors[1];
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ME_MoveCursorChars(editor, &editor->pCursors[0], to - from, FALSE);
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/* Selection is not allowed in the middle of an end paragraph run. */
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if (editor->pCursors[1].run->nFlags & MERF_ENDPARA)
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editor->pCursors[1].nOffset = 0;
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if (editor->pCursors[0].run->nFlags & MERF_ENDPARA)
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{
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if (to > len)
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editor->pCursors[0].nOffset = editor->pCursors[0].run->len;
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else
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editor->pCursors[0].nOffset = 0;
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}
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return to;
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}
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void cursor_coords( ME_TextEditor *editor, ME_Cursor *cursor,
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int *x, int *y, int *height )
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{
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ME_Row *row;
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ME_Run *run = cursor->run;
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ME_Paragraph *para = cursor->para;
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ME_Run *size_run = run, *prev;
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ME_Context c;
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int run_x;
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HDC hdc = ITextHost_TxGetDC( editor->texthost );
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assert(~para->nFlags & MEPF_REWRAP);
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row = row_from_cursor( cursor );
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ME_InitContext( &c, editor, hdc );
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if (!cursor->nOffset && (prev = run_prev( run ))) size_run = prev;
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run_x = ME_PointFromCharContext( &c, run, cursor->nOffset, TRUE );
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*height = size_run->nAscent + size_run->nDescent;
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*x = c.rcView.left + run->pt.x + run_x - editor->horz_si.nPos;
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*y = c.rcView.top + para->pt.y + row->nBaseline
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+ run->pt.y - size_run->nAscent - editor->vert_si.nPos;
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ME_DestroyContext(&c);
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ITextHost_TxReleaseDC( editor->texthost, hdc );
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return;
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}
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void create_caret(ME_TextEditor *editor)
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{
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int x, y, height;
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cursor_coords( editor, &editor->pCursors[0], &x, &y, &height );
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ITextHost_TxCreateCaret(editor->texthost, NULL, 0, height);
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editor->caret_height = height;
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editor->caret_hidden = TRUE;
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}
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void show_caret(ME_TextEditor *editor)
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{
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ITextHost_TxShowCaret(editor->texthost, TRUE);
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editor->caret_hidden = FALSE;
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}
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void hide_caret(ME_TextEditor *editor)
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{
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/* calls to HideCaret are cumulative; do so only once */
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if (!editor->caret_hidden)
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{
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ITextHost_TxShowCaret(editor->texthost, FALSE);
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editor->caret_hidden = TRUE;
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}
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}
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void update_caret(ME_TextEditor *editor)
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{
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int x, y, height;
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if (!editor->bHaveFocus) return;
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if (!ME_IsSelection(editor))
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{
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cursor_coords( editor, &editor->pCursors[0], &x, &y, &height );
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if (height != editor->caret_height) create_caret(editor);
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x = min(x, editor->rcFormat.right-1);
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ITextHost_TxSetCaretPos(editor->texthost, x, y);
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show_caret(editor);
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}
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else
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hide_caret(editor);
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}
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BOOL ME_InternalDeleteText(ME_TextEditor *editor, ME_Cursor *start,
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int nChars, BOOL bForce)
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{
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ME_Cursor c = *start;
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int nOfs = ME_GetCursorOfs(start), text_len = ME_GetTextLength( editor );
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int shift = 0;
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int totalChars = nChars;
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ME_Paragraph *start_para;
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BOOL delete_all = FALSE;
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/* Prevent deletion past last end of paragraph run. */
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nChars = min(nChars, text_len - nOfs);
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if (nChars == text_len) delete_all = TRUE;
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start_para = c.para;
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if (!bForce)
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{
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table_protect_partial_deletion( editor, &c, &nChars );
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if (nChars == 0) return FALSE;
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}
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while (nChars > 0)
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{
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ME_Run *run;
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cursor_from_char_ofs( editor, nOfs + nChars, &c );
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if (!c.nOffset)
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{
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/* We aren't deleting anything in this run, so we will go back to the
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* last run we are deleting text in. */
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c.run = run_prev_all_paras( c.run );
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c.para = c.run->para;
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c.nOffset = c.run->len;
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}
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run = c.run;
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if (run->nFlags & MERF_ENDPARA)
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{
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int eollen = c.run->len;
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BOOL keepFirstParaFormat;
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if (!para_next( para_next( c.para ) )) return TRUE;
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keepFirstParaFormat = (totalChars == nChars && nChars <= eollen &&
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run->nCharOfs);
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if (!editor->bEmulateVersion10) /* v4.1 */
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{
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ME_Paragraph *this_para = run->para;
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ME_Paragraph *next_para = para_next( this_para );
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/* The end of paragraph before a table row is only deleted if there
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* is nothing else on the line before it. */
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if (this_para == start_para && next_para->nFlags & MEPF_ROWSTART)
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{
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/* If the paragraph will be empty, then it should be deleted, however
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* it still might have text right now which would inherit the
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* MEPF_STARTROW property if we joined it right now.
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* Instead we will delete it after the preceding text is deleted. */
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if (nOfs > this_para->nCharOfs)
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{
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/* Skip this end of line. */
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nChars -= (eollen < nChars) ? eollen : nChars;
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continue;
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}
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keepFirstParaFormat = TRUE;
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}
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}
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para_join( editor, c.para, keepFirstParaFormat );
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/* ME_SkipAndPropagateCharOffset(p->pRun, shift); */
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ME_CheckCharOffsets(editor);
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nChars -= (eollen < nChars) ? eollen : nChars;
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continue;
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}
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else
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{
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ME_Cursor cursor;
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int nCharsToDelete = min(nChars, c.nOffset);
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int i;
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c.nOffset -= nCharsToDelete;
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para_mark_rewrap( editor, c.run->para );
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cursor = c;
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/* nChars is the number of characters that should be deleted from the
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PRECEDING runs (these BEFORE cursor.pRun)
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nCharsToDelete is a number of chars to delete from THIS run */
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nChars -= nCharsToDelete;
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shift -= nCharsToDelete;
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TRACE("Deleting %d (remaining %d) chars at %d in %s (%d)\n",
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nCharsToDelete, nChars, c.nOffset,
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debugstr_run( run ), run->len);
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/* nOfs is a character offset (from the start of the document
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to the current (deleted) run */
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add_undo_insert_run( editor, nOfs + nChars, get_text( run, c.nOffset ), nCharsToDelete, run->nFlags, run->style );
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ME_StrDeleteV(run->para->text, run->nCharOfs + c.nOffset, nCharsToDelete);
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run->len -= nCharsToDelete;
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TRACE("Post deletion string: %s (%d)\n", debugstr_run( run ), run->len);
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TRACE("Shift value: %d\n", shift);
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/* update cursors (including c) */
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for (i=-1; i<editor->nCursors; i++) {
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ME_Cursor *pThisCur = editor->pCursors + i;
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if (i == -1) pThisCur = &c;
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if (pThisCur->run == cursor.run) {
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if (pThisCur->nOffset > cursor.nOffset) {
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if (pThisCur->nOffset-cursor.nOffset < nCharsToDelete)
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pThisCur->nOffset = cursor.nOffset;
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else
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pThisCur->nOffset -= nCharsToDelete;
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assert(pThisCur->nOffset >= 0);
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assert(pThisCur->nOffset <= run->len);
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}
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if (pThisCur->nOffset == run->len)
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{
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pThisCur->run = run_next( pThisCur->run );
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assert( pThisCur->run );
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pThisCur->nOffset = 0;
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}
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}
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}
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/* c = updated data now */
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if (c.run == cursor.run) c.run->nCharOfs -= shift;
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editor_propagate_char_ofs( NULL, c.run, shift );
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if (!cursor.run->len)
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{
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TRACE("Removing empty run\n");
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ME_Remove( run_get_di( cursor.run ));
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ME_DestroyDisplayItem( run_get_di( cursor.run ));
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}
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shift = 0;
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continue;
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}
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}
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if (delete_all) editor_set_default_para_fmt( editor, &start_para->fmt );
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return TRUE;
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}
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BOOL ME_DeleteTextAtCursor(ME_TextEditor *editor, int nCursor, int nChars)
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{
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assert(nCursor>=0 && nCursor<editor->nCursors);
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/* text operations set modified state */
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editor->nModifyStep = 1;
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return ME_InternalDeleteText(editor, &editor->pCursors[nCursor],
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nChars, FALSE);
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}
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static struct re_object* create_re_object(const REOBJECT *reo, ME_Run *run)
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{
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struct re_object *reobj = heap_alloc(sizeof(*reobj));
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if (!reobj)
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{
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WARN("Fail to allocate re_object.\n");
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return NULL;
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}
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ME_CopyReObject(&reobj->obj, reo, REO_GETOBJ_ALL_INTERFACES);
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reobj->run = run;
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return reobj;
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}
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HRESULT editor_insert_oleobj(ME_TextEditor *editor, const REOBJECT *reo)
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{
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ME_Run *run, *prev;
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const WCHAR space = ' ';
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struct re_object *reobj_prev = NULL;
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ME_Cursor *cursor, cursor_from_ofs;
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ME_Style *style;
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HRESULT hr;
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SIZEL extent;
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if (editor->lpOleCallback)
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{
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hr = IRichEditOleCallback_QueryInsertObject(editor->lpOleCallback, (LPCLSID)&reo->clsid, reo->pstg, REO_CP_SELECTION);
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if (hr != S_OK)
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return hr;
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}
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extent = reo->sizel;
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if (!extent.cx && !extent.cy && reo->poleobj)
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{
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hr = IOleObject_GetExtent( reo->poleobj, DVASPECT_CONTENT, &extent );
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if (FAILED(hr))
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{
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extent.cx = 0;
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extent.cy = 0;
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}
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}
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if (reo->cp == REO_CP_SELECTION)
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cursor = editor->pCursors;
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else
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{
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cursor_from_char_ofs( editor, reo->cp, &cursor_from_ofs );
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cursor = &cursor_from_ofs;
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}
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style = style_get_insert_style( editor, cursor );
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if (ME_IsSelection(editor))
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ME_DeleteSelection(editor);
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run = run_insert( editor, cursor, style, &space, 1, MERF_GRAPHICS );
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run->reobj = create_re_object( reo, run );
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run->reobj->obj.sizel = extent;
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prev = run;
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while ((prev = run_prev_all_paras( prev )))
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{
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|
if (prev->reobj)
|
|
{
|
|
reobj_prev = prev->reobj;
|
|
break;
|
|
}
|
|
}
|
|
if (reobj_prev)
|
|
list_add_after(&reobj_prev->entry, &run->reobj->entry);
|
|
else
|
|
list_add_head(&editor->reobj_list, &run->reobj->entry);
|
|
|
|
ME_ReleaseStyle( style );
|
|
return S_OK;
|
|
}
|
|
|
|
|
|
void ME_InsertEndRowFromCursor(ME_TextEditor *editor, int nCursor)
|
|
{
|
|
const WCHAR space = ' ';
|
|
ME_Cursor *cursor = editor->pCursors + nCursor;
|
|
ME_Style *style = style_get_insert_style( editor, cursor );
|
|
|
|
/* FIXME no no no */
|
|
if (ME_IsSelection(editor))
|
|
ME_DeleteSelection(editor);
|
|
|
|
run_insert( editor, cursor, style, &space, 1, MERF_ENDROW );
|
|
|
|
ME_ReleaseStyle( style );
|
|
}
|
|
|
|
|
|
void ME_InsertTextFromCursor(ME_TextEditor *editor, int nCursor,
|
|
const WCHAR *str, int len, ME_Style *style)
|
|
{
|
|
const WCHAR *pos;
|
|
ME_Cursor *cursor = editor->pCursors + nCursor;
|
|
int oldLen;
|
|
|
|
/* FIXME really HERE ? */
|
|
if (ME_IsSelection(editor))
|
|
ME_DeleteSelection(editor);
|
|
|
|
oldLen = ME_GetTextLength(editor);
|
|
|
|
/* text operations set modified state */
|
|
editor->nModifyStep = 1;
|
|
|
|
assert(style);
|
|
|
|
if (len == -1) len = lstrlenW( str );
|
|
|
|
/* grow the text limit to fit our text */
|
|
if (editor->nTextLimit < oldLen + len) editor->nTextLimit = oldLen + len;
|
|
|
|
pos = str;
|
|
|
|
while (len)
|
|
{
|
|
/* FIXME this sucks - no respect for unicode (what else can be a line separator in unicode?) */
|
|
while (pos - str < len && *pos != '\r' && *pos != '\n' && *pos != '\t')
|
|
pos++;
|
|
|
|
if (pos != str) /* handle text */
|
|
run_insert( editor, cursor, style, str, pos - str, 0 );
|
|
else if (*pos == '\t') /* handle tabs */
|
|
{
|
|
const WCHAR tab = '\t';
|
|
run_insert( editor, cursor, style, &tab, 1, MERF_TAB );
|
|
pos++;
|
|
}
|
|
else /* handle EOLs */
|
|
{
|
|
ME_Run *end_run, *run, *prev;
|
|
ME_Paragraph *new_para;
|
|
int eol_len = 0;
|
|
|
|
/* Check if new line is allowed for this control */
|
|
if (!(editor->props & TXTBIT_MULTILINE))
|
|
break;
|
|
|
|
/* Find number of CR and LF in end of paragraph run */
|
|
if (*pos =='\r')
|
|
{
|
|
if (len > 1 && pos[1] == '\n')
|
|
eol_len = 2;
|
|
else if (len > 2 && pos[1] == '\r' && pos[2] == '\n')
|
|
eol_len = 3;
|
|
else
|
|
eol_len = 1;
|
|
}
|
|
else
|
|
{
|
|
assert(*pos == '\n');
|
|
eol_len = 1;
|
|
}
|
|
pos += eol_len;
|
|
|
|
if (!editor->bEmulateVersion10 && eol_len == 3)
|
|
{
|
|
/* handle special \r\r\n sequence (richedit 2.x and higher only) */
|
|
const WCHAR space = ' ';
|
|
run_insert( editor, cursor, style, &space, 1, 0 );
|
|
}
|
|
else
|
|
{
|
|
const WCHAR cr = '\r', *eol_str = str;
|
|
|
|
if (!editor->bEmulateVersion10)
|
|
{
|
|
eol_str = &cr;
|
|
eol_len = 1;
|
|
}
|
|
|
|
if (cursor->nOffset == cursor->run->len)
|
|
{
|
|
run = run_next( cursor->run );
|
|
if (!run) run = cursor->run;
|
|
}
|
|
else
|
|
{
|
|
if (cursor->nOffset) run_split( editor, cursor );
|
|
run = cursor->run;
|
|
}
|
|
|
|
new_para = para_split( editor, run, style, eol_str, eol_len, 0 );
|
|
end_run = para_end_run( para_prev( new_para ) );
|
|
|
|
/* Move any cursors that were at the end of the previous run to the beginning of the new para */
|
|
prev = run_prev( end_run );
|
|
if (prev)
|
|
{
|
|
int i;
|
|
for (i = 0; i < editor->nCursors; i++)
|
|
{
|
|
if (editor->pCursors[i].run == prev &&
|
|
editor->pCursors[i].nOffset == prev->len)
|
|
{
|
|
editor->pCursors[i].para = new_para;
|
|
editor->pCursors[i].run = run;
|
|
editor->pCursors[i].nOffset = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
len -= pos - str;
|
|
str = pos;
|
|
}
|
|
}
|
|
|
|
/* Move the cursor nRelOfs characters (either forwards or backwards)
|
|
* If final_eop is TRUE, allow moving the cursor to the end of the final eop.
|
|
*
|
|
* returns the actual number of characters moved.
|
|
**/
|
|
int ME_MoveCursorChars(ME_TextEditor *editor, ME_Cursor *cursor, int nRelOfs, BOOL final_eop)
|
|
{
|
|
cursor->nOffset += nRelOfs;
|
|
if (cursor->nOffset < 0)
|
|
{
|
|
cursor->nOffset += cursor->run->nCharOfs;
|
|
if (cursor->nOffset >= 0)
|
|
{
|
|
/* new offset in the same paragraph */
|
|
do {
|
|
cursor->run = run_prev( cursor->run );
|
|
} while (cursor->nOffset < cursor->run->nCharOfs);
|
|
cursor->nOffset -= cursor->run->nCharOfs;
|
|
return nRelOfs;
|
|
}
|
|
|
|
cursor->nOffset += cursor->para->nCharOfs;
|
|
if (cursor->nOffset <= 0)
|
|
{
|
|
/* moved to the start of the text */
|
|
nRelOfs -= cursor->nOffset;
|
|
ME_SetCursorToStart(editor, cursor);
|
|
return nRelOfs;
|
|
}
|
|
|
|
/* new offset in a previous paragraph */
|
|
do {
|
|
cursor->para = para_prev( cursor->para );
|
|
} while (cursor->nOffset < cursor->para->nCharOfs);
|
|
cursor->nOffset -= cursor->para->nCharOfs;
|
|
|
|
cursor->run = para_end_run( cursor->para );
|
|
while (cursor->nOffset < cursor->run->nCharOfs)
|
|
cursor->run = run_prev( cursor->run );
|
|
cursor->nOffset -= cursor->run->nCharOfs;
|
|
}
|
|
else if (cursor->nOffset >= cursor->run->len)
|
|
{
|
|
ME_Paragraph *next_para;
|
|
int new_offset;
|
|
|
|
new_offset = ME_GetCursorOfs(cursor);
|
|
next_para = para_next( cursor->para );
|
|
if (new_offset < next_para->nCharOfs)
|
|
{
|
|
/* new offset in the same paragraph */
|
|
do {
|
|
cursor->nOffset -= cursor->run->len;
|
|
cursor->run = run_next( cursor->run );
|
|
} while (cursor->nOffset >= cursor->run->len);
|
|
return nRelOfs;
|
|
}
|
|
|
|
if (new_offset >= ME_GetTextLength(editor) + (final_eop ? 1 : 0))
|
|
{
|
|
/* new offset at the end of the text */
|
|
ME_SetCursorToEnd(editor, cursor, final_eop);
|
|
nRelOfs -= new_offset - (ME_GetTextLength(editor) + (final_eop ? 1 : 0));
|
|
return nRelOfs;
|
|
}
|
|
|
|
/* new offset in a following paragraph */
|
|
do {
|
|
cursor->para = next_para;
|
|
next_para = para_next( next_para );
|
|
} while (new_offset >= next_para->nCharOfs);
|
|
|
|
cursor->nOffset = new_offset - cursor->para->nCharOfs;
|
|
cursor->run = para_first_run( cursor->para );
|
|
while (cursor->nOffset >= cursor->run->len)
|
|
{
|
|
cursor->nOffset -= cursor->run->len;
|
|
cursor->run = run_next( cursor->run );
|
|
}
|
|
} /* else new offset is in the same run */
|
|
return nRelOfs;
|
|
}
|
|
|
|
|
|
BOOL
|
|
ME_MoveCursorWords(ME_TextEditor *editor, ME_Cursor *cursor, int nRelOfs)
|
|
{
|
|
ME_Run *run = cursor->run, *other_run;
|
|
ME_Paragraph *para = cursor->para;
|
|
int nOffset = cursor->nOffset;
|
|
|
|
if (nRelOfs == -1)
|
|
{
|
|
/* Backward movement */
|
|
while (TRUE)
|
|
{
|
|
nOffset = ME_CallWordBreakProc( editor, get_text( run, 0 ), run->len, nOffset, WB_MOVEWORDLEFT );
|
|
if (nOffset) break;
|
|
other_run = run_prev( run );
|
|
if (other_run)
|
|
{
|
|
if (ME_CallWordBreakProc( editor, get_text( other_run, 0 ), other_run->len, other_run->len - 1, WB_ISDELIMITER )
|
|
&& !(run->nFlags & MERF_ENDPARA)
|
|
&& !(cursor->run == run && cursor->nOffset == 0)
|
|
&& !ME_CallWordBreakProc( editor, get_text( run, 0 ), run->len, 0, WB_ISDELIMITER ))
|
|
break;
|
|
run = other_run;
|
|
nOffset = other_run->len;
|
|
}
|
|
else
|
|
{
|
|
if (cursor->run == run && cursor->nOffset == 0)
|
|
{
|
|
para = run->para;
|
|
/* Skip empty start of table row paragraph */
|
|
if (para_prev( para ) && para_prev( para )->nFlags & MEPF_ROWSTART)
|
|
para = para_prev( para );
|
|
/* Paragraph breaks are treated as separate words */
|
|
if (!para_prev( para )) return FALSE;
|
|
para = para_prev( para );
|
|
run = para_end_run( para );
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Forward movement */
|
|
BOOL last_delim = FALSE;
|
|
|
|
while (TRUE)
|
|
{
|
|
if (last_delim && !ME_CallWordBreakProc( editor, get_text( run, 0 ), run->len, nOffset, WB_ISDELIMITER ))
|
|
break;
|
|
nOffset = ME_CallWordBreakProc( editor, get_text( run, 0 ), run->len, nOffset, WB_MOVEWORDRIGHT );
|
|
if (nOffset < run->len) break;
|
|
other_run = run_next( run );
|
|
if (other_run)
|
|
{
|
|
last_delim = ME_CallWordBreakProc( editor, get_text( run, 0 ), run->len, nOffset - 1, WB_ISDELIMITER );
|
|
run = other_run;
|
|
nOffset = 0;
|
|
}
|
|
else
|
|
{
|
|
para = para_next( para );
|
|
if (!para_next( para ))
|
|
{
|
|
if (cursor->run == run) return FALSE;
|
|
nOffset = 0;
|
|
break;
|
|
}
|
|
if (para->nFlags & MEPF_ROWSTART) para = para_next( para );
|
|
if (cursor->run == run) run = para_first_run( para );
|
|
nOffset = 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
cursor->para = para;
|
|
cursor->run = run;
|
|
cursor->nOffset = nOffset;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
static void
|
|
ME_SelectByType(ME_TextEditor *editor, ME_SelectionType selectionType)
|
|
{
|
|
/* pCursor[0] is the end of the selection
|
|
* pCursor[1] is the start of the selection (or the position selection anchor)
|
|
* pCursor[2] and [3] are the selection anchors that are backed up
|
|
* so they are kept when the selection changes for drag selection.
|
|
*/
|
|
|
|
editor->nSelectionType = selectionType;
|
|
switch(selectionType)
|
|
{
|
|
case stPosition:
|
|
break;
|
|
case stWord:
|
|
ME_MoveCursorWords(editor, &editor->pCursors[0], +1);
|
|
editor->pCursors[1] = editor->pCursors[0];
|
|
ME_MoveCursorWords(editor, &editor->pCursors[1], -1);
|
|
break;
|
|
case stParagraph:
|
|
editor->pCursors[1] = editor->pCursors[0];
|
|
|
|
editor->pCursors[0].run = para_end_run( editor->pCursors[0].para );
|
|
editor->pCursors[0].para = editor->pCursors[0].run->para;
|
|
editor->pCursors[0].nOffset = editor->pCursors[0].run->len;
|
|
|
|
editor->pCursors[1].run = para_first_run( editor->pCursors[1].para );
|
|
editor->pCursors[1].nOffset = 0;
|
|
break;
|
|
case stLine:
|
|
{
|
|
ME_Row *row = row_from_cursor( editor->pCursors );
|
|
|
|
row_first_cursor( row, editor->pCursors + 1 );
|
|
row_end_cursor( row, editor->pCursors, TRUE );
|
|
break;
|
|
}
|
|
case stDocument:
|
|
/* Select everything with cursor anchored from the start of the text */
|
|
ME_SetCursorToStart(editor, &editor->pCursors[1]);
|
|
ME_SetCursorToEnd(editor, &editor->pCursors[0], TRUE);
|
|
break;
|
|
default: assert(0);
|
|
}
|
|
/* Store the anchor positions for extending the selection. */
|
|
editor->pCursors[2] = editor->pCursors[0];
|
|
editor->pCursors[3] = editor->pCursors[1];
|
|
}
|
|
|
|
int ME_GetCursorOfs(const ME_Cursor *cursor)
|
|
{
|
|
return cursor->para->nCharOfs + cursor->run->nCharOfs + cursor->nOffset;
|
|
}
|
|
|
|
/* Helper function for cursor_from_virtual_coords() to find paragraph within tables */
|
|
static ME_Paragraph *pixel_pos_in_table_row( int x, int y, ME_Paragraph *para )
|
|
{
|
|
ME_Cell *cell, *next_cell;
|
|
|
|
assert( para->nFlags & MEPF_ROWSTART );
|
|
cell = table_row_first_cell( para );
|
|
assert( cell );
|
|
|
|
/* find the cell we are in */
|
|
while ((next_cell = cell_next( cell )) != NULL)
|
|
{
|
|
if (x < next_cell->pt.x)
|
|
{
|
|
para = cell_first_para( cell );
|
|
/* Found the cell, but there might be multiple paragraphs in
|
|
* the cell, so need to search down the cell for the paragraph. */
|
|
while (cell == para_cell( para ))
|
|
{
|
|
if (y < para->pt.y + para->nHeight)
|
|
{
|
|
if (para->nFlags & MEPF_ROWSTART) return pixel_pos_in_table_row( x, y, para );
|
|
else return para;
|
|
}
|
|
para = para_next( para );
|
|
}
|
|
/* Past the end of the cell, so go back to the last cell paragraph */
|
|
return para_prev( para );
|
|
}
|
|
cell = next_cell;
|
|
}
|
|
/* Return table row delimiter */
|
|
para = table_row_end( para );
|
|
assert( para->nFlags & MEPF_ROWEND );
|
|
assert( para->fmt.dwMask & PFM_TABLEROWDELIMITER );
|
|
assert( para->fmt.wEffects & PFE_TABLEROWDELIMITER );
|
|
return para;
|
|
}
|
|
|
|
static BOOL row_cursor( ME_TextEditor *editor, ME_Row *row, int x,
|
|
ME_Cursor *cursor )
|
|
{
|
|
ME_Run *run, *last;
|
|
BOOL exact = TRUE;
|
|
|
|
if (x < row->pt.x)
|
|
{
|
|
x = row->pt.x;
|
|
exact = FALSE;
|
|
}
|
|
|
|
run = row_first_run( row );
|
|
assert( run );
|
|
cursor->nOffset = 0;
|
|
do
|
|
{
|
|
if (x >= run->pt.x && x < run->pt.x + run->nWidth)
|
|
{
|
|
cursor->nOffset = ME_CharFromPoint( editor, x - run->pt.x, run, TRUE, TRUE );
|
|
cursor->run = run;
|
|
cursor->para = run->para;
|
|
return exact;
|
|
}
|
|
last = run;
|
|
run = row_next_run( row, run );
|
|
} while (run);
|
|
|
|
run = last;
|
|
|
|
cursor->run = run;
|
|
cursor->para = run->para;
|
|
return FALSE;
|
|
}
|
|
|
|
/* Finds the run and offset from the pixel position.
|
|
*
|
|
* x & y are pixel positions in virtual coordinates into the rich edit control,
|
|
* so client coordinates must first be adjusted by the scroll position.
|
|
*
|
|
* If final_eop is TRUE consider the final end-of-paragraph.
|
|
*
|
|
* returns TRUE if the result was exactly under the cursor, otherwise returns
|
|
* FALSE, and result is set to the closest position to the coordinates.
|
|
*/
|
|
static BOOL cursor_from_virtual_coords( ME_TextEditor *editor, int x, int y,
|
|
ME_Cursor *result, BOOL final_eop )
|
|
{
|
|
ME_Paragraph *para = editor_first_para( editor );
|
|
ME_Row *row = NULL, *next_row;
|
|
BOOL isExact = TRUE;
|
|
|
|
x -= editor->rcFormat.left;
|
|
y -= editor->rcFormat.top;
|
|
|
|
/* find paragraph */
|
|
for (; para_next( para ); para = para_next( para ))
|
|
{
|
|
if (y < para->pt.y + para->nHeight)
|
|
{
|
|
if (para->nFlags & MEPF_ROWSTART)
|
|
para = pixel_pos_in_table_row( x, y, para );
|
|
y -= para->pt.y;
|
|
row = para_first_row( para );
|
|
break;
|
|
}
|
|
else if (para->nFlags & MEPF_ROWSTART)
|
|
{
|
|
para = table_row_end( para );
|
|
}
|
|
}
|
|
/* find row */
|
|
while (row)
|
|
{
|
|
if (y < row->pt.y + row->nHeight) break;
|
|
next_row = row_next( row );
|
|
if (!next_row) break;
|
|
row = next_row;
|
|
}
|
|
|
|
if (!row && !final_eop && para_prev( para ))
|
|
{
|
|
/* The position is below the last paragraph, so the last row will be used
|
|
* rather than the end of the text, so the x position will be used to
|
|
* determine the offset closest to the pixel position. */
|
|
isExact = FALSE;
|
|
row = para_end_row( para_prev( para ) );
|
|
}
|
|
|
|
if (row) return row_cursor( editor, row, x, result ) && isExact;
|
|
|
|
ME_SetCursorToEnd(editor, result, TRUE);
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/* Sets the cursor to the position closest to the pixel position
|
|
*
|
|
* x & y are pixel positions in client coordinates.
|
|
*
|
|
* return TRUE if the run is directly under the pixel
|
|
* position, FALSE if it not.
|
|
*/
|
|
BOOL cursor_from_coords( ME_TextEditor *editor, int x, int y, ME_Cursor *cursor )
|
|
{
|
|
x += editor->horz_si.nPos;
|
|
y += editor->vert_si.nPos;
|
|
return cursor_from_virtual_coords( editor, x, y, cursor, FALSE );
|
|
}
|
|
|
|
|
|
/* Extends the selection with a word, line, or paragraph selection type.
|
|
*
|
|
* The selection is anchored by editor->pCursors[2-3] such that the text
|
|
* between the anchors will remain selected, and one end will be extended.
|
|
*
|
|
* editor->pCursors[0] should have the position to extend the selection to
|
|
* before this function is called.
|
|
*
|
|
* Nothing will be done if editor->nSelectionType equals stPosition.
|
|
*/
|
|
static void ME_ExtendAnchorSelection(ME_TextEditor *editor)
|
|
{
|
|
ME_Cursor tmp_cursor;
|
|
int curOfs, anchorStartOfs, anchorEndOfs;
|
|
if (editor->nSelectionType == stPosition || editor->nSelectionType == stDocument)
|
|
return;
|
|
curOfs = ME_GetCursorOfs(&editor->pCursors[0]);
|
|
anchorStartOfs = ME_GetCursorOfs(&editor->pCursors[3]);
|
|
anchorEndOfs = ME_GetCursorOfs(&editor->pCursors[2]);
|
|
|
|
tmp_cursor = editor->pCursors[0];
|
|
editor->pCursors[0] = editor->pCursors[2];
|
|
editor->pCursors[1] = editor->pCursors[3];
|
|
if (curOfs < anchorStartOfs)
|
|
{
|
|
/* Extend the left side of selection */
|
|
editor->pCursors[1] = tmp_cursor;
|
|
switch (editor->nSelectionType)
|
|
{
|
|
case stWord:
|
|
ME_MoveCursorWords(editor, &editor->pCursors[1], -1);
|
|
break;
|
|
|
|
case stLine:
|
|
{
|
|
ME_Row *row = row_from_cursor( editor->pCursors + 1 );
|
|
row_first_cursor( row, editor->pCursors + 1 );
|
|
break;
|
|
}
|
|
|
|
case stParagraph:
|
|
editor->pCursors[1].run = para_first_run( editor->pCursors[1].para );
|
|
editor->pCursors[1].nOffset = 0;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else if (curOfs >= anchorEndOfs)
|
|
{
|
|
/* Extend the right side of selection */
|
|
editor->pCursors[0] = tmp_cursor;
|
|
switch (editor->nSelectionType)
|
|
{
|
|
case stWord:
|
|
ME_MoveCursorWords( editor, &editor->pCursors[0], +1 );
|
|
break;
|
|
|
|
case stLine:
|
|
{
|
|
ME_Row *row = row_from_cursor( editor->pCursors );
|
|
row_end_cursor( row, editor->pCursors, TRUE );
|
|
break;
|
|
}
|
|
|
|
case stParagraph:
|
|
editor->pCursors[0].run = para_end_run( editor->pCursors[0].para );
|
|
editor->pCursors[0].para = editor->pCursors[0].run->para;
|
|
editor->pCursors[0].nOffset = editor->pCursors[0].run->len;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ME_LButtonDown(ME_TextEditor *editor, int x, int y, int clickNum)
|
|
{
|
|
ME_Cursor tmp_cursor;
|
|
BOOL is_selection = FALSE, is_shift;
|
|
|
|
editor->nUDArrowX = -1;
|
|
|
|
x += editor->horz_si.nPos;
|
|
y += editor->vert_si.nPos;
|
|
|
|
tmp_cursor = editor->pCursors[0];
|
|
is_selection = ME_IsSelection(editor);
|
|
is_shift = GetKeyState(VK_SHIFT) < 0;
|
|
|
|
cursor_from_virtual_coords( editor, x, y, &editor->pCursors[0], FALSE );
|
|
|
|
if (x >= editor->rcFormat.left || is_shift)
|
|
{
|
|
if (clickNum > 1)
|
|
{
|
|
editor->pCursors[1] = editor->pCursors[0];
|
|
if (is_shift) {
|
|
if (x >= editor->rcFormat.left)
|
|
ME_SelectByType(editor, stWord);
|
|
else
|
|
ME_SelectByType(editor, stParagraph);
|
|
} else if (clickNum % 2 == 0) {
|
|
ME_SelectByType(editor, stWord);
|
|
} else {
|
|
ME_SelectByType(editor, stParagraph);
|
|
}
|
|
}
|
|
else if (!is_shift)
|
|
{
|
|
editor->nSelectionType = stPosition;
|
|
editor->pCursors[1] = editor->pCursors[0];
|
|
}
|
|
else if (!is_selection)
|
|
{
|
|
editor->nSelectionType = stPosition;
|
|
editor->pCursors[1] = tmp_cursor;
|
|
}
|
|
else if (editor->nSelectionType != stPosition)
|
|
{
|
|
ME_ExtendAnchorSelection(editor);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (clickNum < 2) {
|
|
ME_SelectByType(editor, stLine);
|
|
} else if (clickNum % 2 == 0 || is_shift) {
|
|
ME_SelectByType(editor, stParagraph);
|
|
} else {
|
|
ME_SelectByType(editor, stDocument);
|
|
}
|
|
}
|
|
ME_InvalidateSelection(editor);
|
|
update_caret(editor);
|
|
ME_SendSelChange(editor);
|
|
}
|
|
|
|
void ME_MouseMove(ME_TextEditor *editor, int x, int y)
|
|
{
|
|
ME_Cursor tmp_cursor;
|
|
|
|
if (editor->nSelectionType == stDocument)
|
|
return;
|
|
x += editor->horz_si.nPos;
|
|
y += editor->vert_si.nPos;
|
|
|
|
tmp_cursor = editor->pCursors[0];
|
|
/* FIXME: do something with the return value of cursor_from_virtual_coords */
|
|
cursor_from_virtual_coords( editor, x, y, &tmp_cursor, TRUE );
|
|
|
|
ME_InvalidateSelection(editor);
|
|
editor->pCursors[0] = tmp_cursor;
|
|
ME_ExtendAnchorSelection(editor);
|
|
|
|
if (editor->nSelectionType != stPosition &&
|
|
memcmp(&editor->pCursors[1], &editor->pCursors[3], sizeof(ME_Cursor)))
|
|
/* The scroll the cursor towards the other end, since it was the one
|
|
* extended by ME_ExtendAnchorSelection */
|
|
editor_ensure_visible( editor, &editor->pCursors[1] );
|
|
else
|
|
editor_ensure_visible( editor, &editor->pCursors[0] );
|
|
|
|
ME_InvalidateSelection(editor);
|
|
update_caret(editor);
|
|
ME_SendSelChange(editor);
|
|
}
|
|
|
|
static int ME_GetXForArrow(ME_TextEditor *editor, ME_Cursor *pCursor)
|
|
{
|
|
ME_Run *run = pCursor->run;
|
|
int x;
|
|
|
|
if (editor->nUDArrowX != -1)
|
|
x = editor->nUDArrowX;
|
|
else
|
|
{
|
|
x = run->pt.x;
|
|
x += ME_PointFromChar( editor, run, pCursor->nOffset, TRUE );
|
|
editor->nUDArrowX = x;
|
|
}
|
|
return x;
|
|
}
|
|
|
|
|
|
static void cursor_move_line( ME_TextEditor *editor, ME_Cursor *cursor, BOOL up, BOOL extend )
|
|
{
|
|
ME_Paragraph *old_para = cursor->para, *new_para;
|
|
ME_Row *row = row_from_cursor( cursor );
|
|
int x = ME_GetXForArrow( editor, cursor );
|
|
|
|
if (up)
|
|
{
|
|
/* start of the previous row */
|
|
row = row_prev_all_paras( row );
|
|
if (!row)
|
|
{
|
|
if (extend) ME_SetCursorToStart( editor, cursor );
|
|
return;
|
|
}
|
|
new_para = row_para( row );
|
|
if (old_para->nFlags & MEPF_ROWEND ||
|
|
(para_cell( old_para ) && para_cell( old_para ) != para_cell( new_para )))
|
|
{
|
|
/* Brought out of a cell */
|
|
new_para = para_prev( table_row_start( old_para ));
|
|
if (!new_para) return; /* At the top, so don't go anywhere. */
|
|
row = para_first_row( new_para );
|
|
}
|
|
if (new_para->nFlags & MEPF_ROWEND)
|
|
{
|
|
/* Brought into a table row */
|
|
ME_Cell *cell = table_row_end_cell( new_para );
|
|
while (x < cell->pt.x && cell_prev( cell ))
|
|
cell = cell_prev( cell );
|
|
if (cell_next( cell )) /* else - we are still at the end of the row */
|
|
row = para_end_row( cell_end_para( cell ) );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* start of the next row */
|
|
row = row_next_all_paras( row );
|
|
if (!row)
|
|
{
|
|
if (extend) ME_SetCursorToEnd( editor, cursor, TRUE );
|
|
return;
|
|
}
|
|
new_para = row_para( row );
|
|
if (old_para->nFlags & MEPF_ROWSTART ||
|
|
(para_cell( old_para ) && para_cell( old_para ) != para_cell( new_para )))
|
|
{
|
|
/* Brought out of a cell */
|
|
new_para = para_next( table_row_end( old_para ) );
|
|
if (!para_next( new_para )) return; /* At the bottom, so don't go anywhere. */
|
|
row = para_first_row( new_para );
|
|
}
|
|
if (new_para->nFlags & MEPF_ROWSTART)
|
|
{
|
|
/* Brought into a table row */
|
|
ME_Cell *cell = table_row_first_cell( new_para );
|
|
while (cell_next( cell ) && x >= cell_next( cell )->pt.x)
|
|
cell = cell_next( cell );
|
|
row = para_first_row( cell_first_para( cell ) );
|
|
}
|
|
}
|
|
if (!row) return;
|
|
|
|
row_cursor( editor, row, x, cursor );
|
|
}
|
|
|
|
static void ME_ArrowPageUp( ME_TextEditor *editor, ME_Cursor *cursor )
|
|
{
|
|
ME_Row *row = para_first_row( editor_first_para( editor ) ), *last_row;
|
|
int x, yd, old_scroll_pos = editor->vert_si.nPos;
|
|
|
|
if (editor->vert_si.nPos < row->nHeight)
|
|
{
|
|
ME_SetCursorToStart( editor, cursor );
|
|
/* Native clears seems to clear this x value on page up at the top
|
|
* of the text, but not on page down at the end of the text.
|
|
* Doesn't make sense, but we try to be bug for bug compatible. */
|
|
editor->nUDArrowX = -1;
|
|
}
|
|
else
|
|
{
|
|
x = ME_GetXForArrow( editor, cursor );
|
|
row = row_from_cursor( cursor );
|
|
|
|
ME_ScrollUp( editor, editor->sizeWindow.cy );
|
|
/* Only move the cursor by the amount scrolled. */
|
|
yd = cursor->para->pt.y + row->pt.y + editor->vert_si.nPos - old_scroll_pos;
|
|
last_row = row;
|
|
|
|
while ((row = row_prev_all_paras( row )))
|
|
{
|
|
if (row_para( row )->pt.y + row->pt.y < yd) break;
|
|
last_row = row;
|
|
}
|
|
|
|
row_cursor( editor, last_row, x, cursor );
|
|
}
|
|
}
|
|
|
|
static void ME_ArrowPageDown( ME_TextEditor *editor, ME_Cursor *cursor )
|
|
{
|
|
ME_Row *row = para_end_row( para_prev( editor_end_para( editor ) ) ), *last_row;
|
|
int x, yd, old_scroll_pos = editor->vert_si.nPos;
|
|
|
|
x = ME_GetXForArrow( editor, cursor );
|
|
|
|
if (editor->vert_si.nPos >= row_para( row )->pt.y + row->pt.y - editor->sizeWindow.cy)
|
|
ME_SetCursorToEnd( editor, cursor, FALSE );
|
|
else
|
|
{
|
|
row = row_from_cursor( cursor );
|
|
|
|
/* For native richedit controls:
|
|
* v1.0 - v3.1 can only scroll down as far as the scrollbar lets us
|
|
* v4.1 can scroll past this position here. */
|
|
ME_ScrollDown( editor, editor->sizeWindow.cy );
|
|
/* Only move the cursor by the amount scrolled. */
|
|
yd = cursor->para->pt.y + row->pt.y + editor->vert_si.nPos - old_scroll_pos;
|
|
last_row = row;
|
|
|
|
while ((row = row_next_all_paras( row )))
|
|
{
|
|
if (row_para( row )->pt.y + row->pt.y >= yd) break;
|
|
last_row = row;
|
|
}
|
|
|
|
row_cursor( editor, last_row, x, cursor );
|
|
}
|
|
}
|
|
|
|
static void ME_ArrowHome( ME_TextEditor *editor, ME_Cursor *cursor )
|
|
{
|
|
ME_Row *row = row_from_cursor( cursor );
|
|
|
|
row_first_cursor( row, cursor );
|
|
}
|
|
|
|
static void ME_ArrowCtrlHome(ME_TextEditor *editor, ME_Cursor *pCursor)
|
|
{
|
|
ME_SetCursorToStart(editor, pCursor);
|
|
}
|
|
|
|
static void ME_ArrowEnd( ME_TextEditor *editor, ME_Cursor *cursor )
|
|
{
|
|
ME_Row *row = row_from_cursor( cursor );
|
|
|
|
row_end_cursor( row, cursor, FALSE );
|
|
}
|
|
|
|
static void ME_ArrowCtrlEnd(ME_TextEditor *editor, ME_Cursor *pCursor)
|
|
{
|
|
ME_SetCursorToEnd(editor, pCursor, FALSE);
|
|
}
|
|
|
|
BOOL ME_IsSelection(ME_TextEditor *editor)
|
|
{
|
|
return editor->pCursors[0].run != editor->pCursors[1].run ||
|
|
editor->pCursors[0].nOffset != editor->pCursors[1].nOffset;
|
|
}
|
|
|
|
void ME_DeleteSelection(ME_TextEditor *editor)
|
|
{
|
|
LONG from, to;
|
|
int nStartCursor = ME_GetSelectionOfs(editor, &from, &to);
|
|
int nEndCursor = nStartCursor ^ 1;
|
|
ME_DeleteTextAtCursor(editor, nStartCursor, to - from);
|
|
editor->pCursors[nEndCursor] = editor->pCursors[nStartCursor];
|
|
}
|
|
|
|
ME_Style *ME_GetSelectionInsertStyle(ME_TextEditor *editor)
|
|
{
|
|
return style_get_insert_style( editor, editor->pCursors );
|
|
}
|
|
|
|
void ME_SendSelChange(ME_TextEditor *editor)
|
|
{
|
|
SELCHANGE sc;
|
|
|
|
sc.nmhdr.hwndFrom = NULL;
|
|
sc.nmhdr.idFrom = 0;
|
|
sc.nmhdr.code = EN_SELCHANGE;
|
|
ME_GetSelectionOfs(editor, &sc.chrg.cpMin, &sc.chrg.cpMax);
|
|
sc.seltyp = SEL_EMPTY;
|
|
if (sc.chrg.cpMin != sc.chrg.cpMax)
|
|
sc.seltyp |= SEL_TEXT;
|
|
if (sc.chrg.cpMin < sc.chrg.cpMax+1) /* what were RICHEDIT authors thinking ? */
|
|
sc.seltyp |= SEL_MULTICHAR;
|
|
|
|
if (sc.chrg.cpMin != editor->notified_cr.cpMin || sc.chrg.cpMax != editor->notified_cr.cpMax)
|
|
{
|
|
ME_ClearTempStyle(editor);
|
|
|
|
editor->notified_cr = sc.chrg;
|
|
|
|
if (editor->nEventMask & ENM_SELCHANGE)
|
|
{
|
|
TRACE("cpMin=%ld cpMax=%ld seltyp=%d (%s %s)\n",
|
|
sc.chrg.cpMin, sc.chrg.cpMax, sc.seltyp,
|
|
(sc.seltyp & SEL_TEXT) ? "SEL_TEXT" : "",
|
|
(sc.seltyp & SEL_MULTICHAR) ? "SEL_MULTICHAR" : "");
|
|
ITextHost_TxNotify(editor->texthost, sc.nmhdr.code, &sc);
|
|
}
|
|
}
|
|
}
|
|
|
|
BOOL
|
|
ME_ArrowKey(ME_TextEditor *editor, int nVKey, BOOL extend, BOOL ctrl)
|
|
{
|
|
int nCursor = 0;
|
|
ME_Cursor *p = &editor->pCursors[nCursor];
|
|
ME_Cursor tmp_curs = *p;
|
|
BOOL success = FALSE;
|
|
|
|
ME_CheckCharOffsets(editor);
|
|
switch(nVKey) {
|
|
case VK_LEFT:
|
|
if (ctrl)
|
|
success = ME_MoveCursorWords(editor, &tmp_curs, -1);
|
|
else
|
|
success = ME_MoveCursorChars(editor, &tmp_curs, -1, extend);
|
|
break;
|
|
case VK_RIGHT:
|
|
if (ctrl)
|
|
success = ME_MoveCursorWords(editor, &tmp_curs, +1);
|
|
else
|
|
success = ME_MoveCursorChars(editor, &tmp_curs, +1, extend);
|
|
break;
|
|
case VK_UP:
|
|
cursor_move_line( editor, &tmp_curs, TRUE, extend );
|
|
break;
|
|
case VK_DOWN:
|
|
cursor_move_line( editor, &tmp_curs, FALSE, extend );
|
|
break;
|
|
case VK_PRIOR:
|
|
ME_ArrowPageUp(editor, &tmp_curs);
|
|
break;
|
|
case VK_NEXT:
|
|
ME_ArrowPageDown(editor, &tmp_curs);
|
|
break;
|
|
case VK_HOME: {
|
|
if (ctrl)
|
|
ME_ArrowCtrlHome(editor, &tmp_curs);
|
|
else
|
|
ME_ArrowHome(editor, &tmp_curs);
|
|
break;
|
|
}
|
|
case VK_END:
|
|
if (ctrl)
|
|
ME_ArrowCtrlEnd(editor, &tmp_curs);
|
|
else
|
|
ME_ArrowEnd(editor, &tmp_curs);
|
|
break;
|
|
}
|
|
|
|
if (!extend)
|
|
editor->pCursors[1] = tmp_curs;
|
|
*p = tmp_curs;
|
|
|
|
ME_InvalidateSelection(editor);
|
|
ME_Repaint(editor);
|
|
hide_caret(editor);
|
|
editor_ensure_visible( editor, &tmp_curs );
|
|
update_caret(editor);
|
|
ME_SendSelChange(editor);
|
|
return success;
|
|
}
|