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521 lines
16 KiB
C
521 lines
16 KiB
C
/*
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* RichEdit style management functions
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*
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* Copyright 2004 by Krzysztof Foltman
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 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_style);
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static int all_refs = 0;
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/* the following routines assume that:
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* - char2[AW] extends char[AW] by adding fields at the end of the charA form)
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* - szFaceName is the last field of char[AW] form, and wWeight the first of 2[AW]
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* - the difference between A and W form is the szFaceName as Ansi vs Unicode string
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* - because of alignment, offset of wWeight field in 2[AW] structure *IS NOT*
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* sizeof(char[AW])
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*/
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CHARFORMAT2W *ME_ToCF2W(CHARFORMAT2W *to, CHARFORMAT2W *from)
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{
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if (from->cbSize == sizeof(CHARFORMATA))
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{
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CHARFORMATA *f = (CHARFORMATA *)from;
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CopyMemory(to, f, FIELD_OFFSET(CHARFORMATA, szFaceName));
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to->cbSize = sizeof(CHARFORMAT2W);
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if (f->dwMask & CFM_FACE) {
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MultiByteToWideChar(0, 0, f->szFaceName, -1, to->szFaceName, sizeof(to->szFaceName)/sizeof(WCHAR));
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}
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return to;
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}
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if (from->cbSize == sizeof(CHARFORMATW))
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{
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CHARFORMATW *f = (CHARFORMATW *)from;
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CopyMemory(to, f, sizeof(*f));
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/* theoretically, we don't need to zero the remaining memory */
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ZeroMemory(&to->wWeight, sizeof(CHARFORMAT2W)-FIELD_OFFSET(CHARFORMAT2W, wWeight));
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to->cbSize = sizeof(CHARFORMAT2W);
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return to;
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}
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if (from->cbSize == sizeof(CHARFORMAT2A))
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{
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CHARFORMAT2A *f = (CHARFORMAT2A *)from;
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/* copy the A structure without face name */
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CopyMemory(to, f, FIELD_OFFSET(CHARFORMATA, szFaceName));
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/* convert face name */
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if (f->dwMask & CFM_FACE)
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MultiByteToWideChar(0, 0, f->szFaceName, -1, to->szFaceName, sizeof(to->szFaceName)/sizeof(WCHAR));
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/* copy the rest of the 2A structure to 2W */
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CopyMemory(&to->wWeight, &f->wWeight, sizeof(CHARFORMAT2A)-FIELD_OFFSET(CHARFORMAT2A, wWeight));
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to->cbSize = sizeof(CHARFORMAT2W);
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return to;
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}
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return (from->cbSize >= sizeof(CHARFORMAT2W)) ? from : NULL;
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}
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static CHARFORMAT2W *ME_ToCFAny(CHARFORMAT2W *to, CHARFORMAT2W *from)
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{
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assert(from->cbSize == sizeof(CHARFORMAT2W));
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if (to->cbSize == sizeof(CHARFORMATA))
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{
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CHARFORMATA *t = (CHARFORMATA *)to;
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CopyMemory(t, from, FIELD_OFFSET(CHARFORMATA, szFaceName));
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WideCharToMultiByte(0, 0, from->szFaceName, -1, t->szFaceName, sizeof(t->szFaceName), 0, 0);
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if (from->dwMask & CFM_UNDERLINETYPE)
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{
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switch (from->bUnderlineType)
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{
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case CFU_CF1UNDERLINE:
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to->dwMask |= CFM_UNDERLINE;
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to->dwEffects |= CFE_UNDERLINE;
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break;
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case CFU_UNDERLINENONE:
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to->dwMask |= CFM_UNDERLINE;
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to->dwEffects &= ~CFE_UNDERLINE;
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break;
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}
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}
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t->cbSize = sizeof(*t); /* it was overwritten by CopyMemory */
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return to;
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}
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if (to->cbSize == sizeof(CHARFORMATW))
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{
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CHARFORMATW *t = (CHARFORMATW *)to;
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CopyMemory(t, from, sizeof(*t));
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if (from->dwMask & CFM_UNDERLINETYPE)
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{
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switch (from->bUnderlineType)
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{
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case CFU_CF1UNDERLINE:
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to->dwMask |= CFM_UNDERLINE;
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to->dwEffects |= CFE_UNDERLINE;
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break;
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case CFU_UNDERLINENONE:
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to->dwMask |= CFM_UNDERLINE;
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to->dwEffects &= ~CFE_UNDERLINE;
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break;
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}
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}
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t->cbSize = sizeof(*t); /* it was overwritten by CopyMemory */
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return to;
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}
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if (to->cbSize == sizeof(CHARFORMAT2A))
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{
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CHARFORMAT2A *t = (CHARFORMAT2A *)to;
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/* copy the A structure without face name */
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CopyMemory(t, from, FIELD_OFFSET(CHARFORMATA, szFaceName));
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/* convert face name */
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WideCharToMultiByte(0, 0, from->szFaceName, -1, t->szFaceName, sizeof(t->szFaceName), 0, 0);
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/* copy the rest of the 2A structure to 2W */
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CopyMemory(&t->wWeight, &from->wWeight, sizeof(CHARFORMAT2W)-FIELD_OFFSET(CHARFORMAT2W,wWeight));
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t->cbSize = sizeof(*t); /* it was overwritten by CopyMemory */
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return to;
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}
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assert(to->cbSize >= sizeof(CHARFORMAT2W));
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return from;
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}
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void ME_CopyToCFAny(CHARFORMAT2W *to, CHARFORMAT2W *from)
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{
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if (ME_ToCFAny(to, from) == from)
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CopyMemory(to, from, to->cbSize);
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}
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ME_Style *ME_MakeStyle(CHARFORMAT2W *style) {
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CHARFORMAT2W styledata;
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ME_Style *s = ALLOC_OBJ(ME_Style);
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style = ME_ToCF2W(&styledata, style);
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memset(s, 0, sizeof(ME_Style));
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if (style->cbSize <= sizeof(CHARFORMAT2W))
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CopyMemory(&s->fmt, style, style->cbSize);
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else
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s->fmt = *style;
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s->fmt.cbSize = sizeof(CHARFORMAT2W);
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s->nSequence = -2;
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s->nRefs = 1;
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s->hFont = NULL;
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s->tm.tmAscent = -1;
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all_refs++;
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return s;
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}
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#define COPY_STYLE_ITEM(mask, member) \
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if (style->dwMask & mask) { \
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s->fmt.dwMask |= mask;\
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s->fmt.member = style->member;\
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}
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#define COPY_STYLE_ITEM_MEMCPY(mask, member) \
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if (style->dwMask & mask) { \
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s->fmt.dwMask |= mask;\
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CopyMemory(s->fmt.member, style->member, sizeof(style->member));\
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}
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void ME_InitCharFormat2W(CHARFORMAT2W *pFmt)
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{
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ZeroMemory(pFmt, sizeof(CHARFORMAT2W));
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pFmt->cbSize = sizeof(CHARFORMAT2W);
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}
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ME_Style *ME_ApplyStyle(ME_Style *sSrc, CHARFORMAT2W *style)
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{
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CHARFORMAT2W styledata;
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ME_Style *s = ME_MakeStyle(&sSrc->fmt);
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style = ME_ToCF2W(&styledata, style);
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COPY_STYLE_ITEM(CFM_ANIMATION, bAnimation);
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COPY_STYLE_ITEM(CFM_BACKCOLOR, crBackColor);
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COPY_STYLE_ITEM(CFM_CHARSET, bCharSet);
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COPY_STYLE_ITEM(CFM_COLOR, crTextColor);
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COPY_STYLE_ITEM_MEMCPY(CFM_FACE, szFaceName);
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COPY_STYLE_ITEM(CFM_KERNING, wKerning);
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COPY_STYLE_ITEM(CFM_LCID, lcid);
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COPY_STYLE_ITEM(CFM_OFFSET, yOffset);
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COPY_STYLE_ITEM(CFM_REVAUTHOR, bRevAuthor);
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if (style->dwMask & CFM_SIZE) {
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s->fmt.dwMask |= CFM_SIZE;
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s->fmt.yHeight = min(style->yHeight, yHeightCharPtsMost * 20);
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}
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COPY_STYLE_ITEM(CFM_SPACING, sSpacing);
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COPY_STYLE_ITEM(CFM_STYLE, sStyle);
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COPY_STYLE_ITEM(CFM_UNDERLINETYPE, bUnderlineType);
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COPY_STYLE_ITEM(CFM_WEIGHT, wWeight);
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/* FIXME: this is not documented this way, but that's the more logical */
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COPY_STYLE_ITEM(CFM_FACE, bPitchAndFamily);
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s->fmt.dwEffects &= ~(style->dwMask);
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s->fmt.dwEffects |= style->dwEffects & style->dwMask;
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s->fmt.dwMask |= style->dwMask;
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if (style->dwMask & CFM_COLOR)
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{
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if (style->dwEffects & CFE_AUTOCOLOR)
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s->fmt.dwEffects |= CFE_AUTOCOLOR;
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else
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s->fmt.dwEffects &= ~CFE_AUTOCOLOR;
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}
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if (style->dwMask & CFM_UNDERLINE)
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{
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s->fmt.dwMask |= CFM_UNDERLINETYPE;
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s->fmt.bUnderlineType = (style->dwEffects & CFM_UNDERLINE) ?
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CFU_CF1UNDERLINE : CFU_UNDERLINENONE;
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}
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if (style->dwMask & CFM_BOLD && !(style->dwMask & CFM_WEIGHT))
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{
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s->fmt.wWeight = (style->dwEffects & CFE_BOLD) ? FW_BOLD : FW_NORMAL;
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} else if (style->dwMask & CFM_WEIGHT && !(style->dwMask & CFM_BOLD)) {
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if (style->wWeight > FW_NORMAL)
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s->fmt.dwEffects |= CFE_BOLD;
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else
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s->fmt.dwEffects &= ~CFE_BOLD;
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}
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return s;
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}
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void ME_CopyCharFormat(CHARFORMAT2W *pDest, const CHARFORMAT2W *pSrc)
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{
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/* using this with non-2W structs is forbidden */
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assert(pSrc->cbSize == sizeof(CHARFORMAT2W));
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assert(pDest->cbSize == sizeof(CHARFORMAT2W));
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*pDest = *pSrc;
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}
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static void ME_DumpStyleEffect(char **p, const char *name, const CHARFORMAT2W *fmt, int mask)
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{
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*p += sprintf(*p, "%-22s%s\n", name, (fmt->dwMask & mask) ? ((fmt->dwEffects & mask) ? "YES" : "no") : "N/A");
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}
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void ME_DumpStyle(ME_Style *s)
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{
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char buf[2048];
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ME_DumpStyleToBuf(&s->fmt, buf);
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TRACE_(richedit_style)("%s\n", buf);
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}
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void ME_DumpStyleToBuf(CHARFORMAT2W *pFmt, char buf[2048])
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{
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/* FIXME only CHARFORMAT styles implemented */
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/* this function sucks, doesn't check for buffer overruns but it's "good enough" as for debug code */
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char *p;
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p = buf;
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p += sprintf(p, "Font face: ");
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if (pFmt->dwMask & CFM_FACE) {
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WCHAR *q = pFmt->szFaceName;
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while(*q) {
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*p++ = (*q > 255) ? '?' : *q;
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q++;
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}
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} else
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p += sprintf(p, "N/A");
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if (pFmt->dwMask & CFM_SIZE)
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p += sprintf(p, "\nFont size: %d\n", pFmt->yHeight);
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else
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p += sprintf(p, "\nFont size: N/A\n");
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if (pFmt->dwMask & CFM_OFFSET)
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p += sprintf(p, "Char offset: %d\n", pFmt->yOffset);
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else
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p += sprintf(p, "Char offset: N/A\n");
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if (pFmt->dwMask & CFM_CHARSET)
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p += sprintf(p, "Font charset: %d\n", (int)pFmt->bCharSet);
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else
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p += sprintf(p, "Font charset: N/A\n");
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/* I'm assuming CFM_xxx and CFE_xxx are the same values, fortunately it IS true wrt used flags*/
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ME_DumpStyleEffect(&p, "Font bold:", pFmt, CFM_BOLD);
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ME_DumpStyleEffect(&p, "Font italic:", pFmt, CFM_ITALIC);
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ME_DumpStyleEffect(&p, "Font underline:", pFmt, CFM_UNDERLINE);
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ME_DumpStyleEffect(&p, "Font strikeout:", pFmt, CFM_STRIKEOUT);
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ME_DumpStyleEffect(&p, "Hidden text:", pFmt, CFM_HIDDEN);
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p += sprintf(p, "Text color: ");
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if (pFmt->dwMask & CFM_COLOR)
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{
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if (pFmt->dwEffects & CFE_AUTOCOLOR)
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p += sprintf(p, "auto\n");
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else
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p += sprintf(p, "%06x\n", (int)pFmt->crTextColor);
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}
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else
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p += sprintf(p, "N/A\n");
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ME_DumpStyleEffect(&p, "Text protected:", pFmt, CFM_PROTECTED);
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}
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static void
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ME_LogFontFromStyle(ME_Context* c, LOGFONTW *lf, const ME_Style *s)
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{
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ZeroMemory(lf, sizeof(LOGFONTW));
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lstrcpyW(lf->lfFaceName, s->fmt.szFaceName);
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lf->lfHeight = ME_twips2pointsY(c, -s->fmt.yHeight);
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lf->lfWeight = FW_NORMAL;
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if (s->fmt.dwEffects & s->fmt.dwMask & CFM_BOLD)
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lf->lfWeight = FW_BOLD;
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if (s->fmt.dwMask & CFM_WEIGHT)
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lf->lfWeight = s->fmt.wWeight;
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if (s->fmt.dwEffects & s->fmt.dwMask & CFM_ITALIC)
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lf->lfItalic = 1;
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if (s->fmt.dwEffects & s->fmt.dwMask & (CFM_UNDERLINE | CFE_LINK))
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lf->lfUnderline = 1;
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if (s->fmt.dwMask & CFM_UNDERLINETYPE && s->fmt.bUnderlineType == CFU_CF1UNDERLINE)
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lf->lfUnderline = 1;
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if (s->fmt.dwEffects & s->fmt.dwMask & CFM_STRIKEOUT)
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lf->lfStrikeOut = 1;
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if (s->fmt.dwEffects & s->fmt.dwMask & (CFM_SUBSCRIPT|CFM_SUPERSCRIPT))
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lf->lfHeight = (lf->lfHeight*2)/3;
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/*lf.lfQuality = PROOF_QUALITY; */
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if (s->fmt.dwMask & CFM_FACE)
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lf->lfPitchAndFamily = s->fmt.bPitchAndFamily;
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if (s->fmt.dwMask & CFM_CHARSET)
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lf->lfCharSet = s->fmt.bCharSet;
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}
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void ME_CharFormatFromLogFont(HDC hDC, const LOGFONTW *lf, CHARFORMAT2W *fmt)
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{
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int ry;
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ME_InitCharFormat2W(fmt);
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ry = GetDeviceCaps(hDC, LOGPIXELSY);
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lstrcpyW(fmt->szFaceName, lf->lfFaceName);
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fmt->dwEffects = 0;
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fmt->dwMask = CFM_WEIGHT|CFM_BOLD|CFM_ITALIC|CFM_UNDERLINE|CFM_STRIKEOUT|CFM_SIZE|CFM_FACE|CFM_CHARSET;
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fmt->wWeight = lf->lfWeight;
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fmt->yHeight = -lf->lfHeight*1440/ry;
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if (lf->lfWeight > FW_NORMAL) fmt->dwEffects |= CFM_BOLD;
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if (lf->lfItalic) fmt->dwEffects |= CFM_ITALIC;
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if (lf->lfUnderline) fmt->dwEffects |= CFM_UNDERLINE;
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/* notice that if a logfont was created with underline due to CFM_LINK, this
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would add an erroneous CFM_UNDERLINE. This isn't currently ever a problem. */
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if (lf->lfStrikeOut) fmt->dwEffects |= CFM_STRIKEOUT;
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fmt->bPitchAndFamily = lf->lfPitchAndFamily;
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fmt->bCharSet = lf->lfCharSet;
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}
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static BOOL ME_IsFontEqual(const LOGFONTW *p1, const LOGFONTW *p2)
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{
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if (memcmp(p1, p2, sizeof(LOGFONTW)-sizeof(p1->lfFaceName)))
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return FALSE;
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if (lstrcmpW(p1->lfFaceName, p2->lfFaceName))
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return FALSE;
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return TRUE;
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}
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HFONT ME_SelectStyleFont(ME_Context *c, ME_Style *s)
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{
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HFONT hOldFont;
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LOGFONTW lf;
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int i, nEmpty, nAge = 0x7FFFFFFF;
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ME_FontCacheItem *item;
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assert(s);
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ME_LogFontFromStyle(c, &lf, s);
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for (i=0; i<HFONT_CACHE_SIZE; i++)
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c->editor->pFontCache[i].nAge++;
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for (i=0, nEmpty=-1, nAge=0; i<HFONT_CACHE_SIZE; i++)
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{
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item = &c->editor->pFontCache[i];
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if (!item->nRefs)
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{
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if (item->nAge > nAge)
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nEmpty = i, nAge = item->nAge;
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}
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if (item->hFont && ME_IsFontEqual(&item->lfSpecs, &lf))
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break;
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}
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if (i < HFONT_CACHE_SIZE) /* found */
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{
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item = &c->editor->pFontCache[i];
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TRACE_(richedit_style)("font reused %d\n", i);
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s->hFont = item->hFont;
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item->nRefs++;
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}
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else
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{
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item = &c->editor->pFontCache[nEmpty]; /* this legal even when nEmpty == -1, as we don't dereference it */
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assert(nEmpty != -1); /* otherwise we leak cache entries or get too many fonts at once*/
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if (item->hFont) {
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TRACE_(richedit_style)("font deleted %d\n", nEmpty);
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DeleteObject(item->hFont);
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item->hFont = NULL;
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}
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s->hFont = CreateFontIndirectW(&lf);
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assert(s->hFont);
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TRACE_(richedit_style)("font created %d\n", nEmpty);
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item->hFont = s->hFont;
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item->nRefs = 1;
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item->lfSpecs = lf;
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}
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hOldFont = SelectObject(c->hDC, s->hFont);
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/* should be cached too, maybe ? */
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GetTextMetricsW(c->hDC, &s->tm);
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return hOldFont;
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}
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void ME_UnselectStyleFont(ME_Context *c, ME_Style *s, HFONT hOldFont)
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{
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int i;
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assert(s);
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SelectObject(c->hDC, hOldFont);
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for (i=0; i<HFONT_CACHE_SIZE; i++)
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{
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ME_FontCacheItem *pItem = &c->editor->pFontCache[i];
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if (pItem->hFont == s->hFont && pItem->nRefs > 0)
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{
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pItem->nRefs--;
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pItem->nAge = 0;
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s->hFont = NULL;
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return;
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}
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}
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assert(0 == "UnselectStyleFont without SelectStyleFont");
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}
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static void ME_DestroyStyle(ME_Style *s) {
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if (s->hFont)
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{
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DeleteObject(s->hFont);
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s->hFont = NULL;
|
|
}
|
|
FREE_OBJ(s);
|
|
}
|
|
|
|
void ME_AddRefStyle(ME_Style *s)
|
|
{
|
|
assert(s->nRefs>0); /* style with 0 references isn't supposed to exist */
|
|
s->nRefs++;
|
|
all_refs++;
|
|
}
|
|
|
|
void ME_ReleaseStyle(ME_Style *s)
|
|
{
|
|
s->nRefs--;
|
|
all_refs--;
|
|
if (s->nRefs==0)
|
|
TRACE_(richedit_style)("destroy style %p, total refs=%d\n", s, all_refs);
|
|
else
|
|
TRACE_(richedit_style)("release style %p, new refs=%d, total refs=%d\n", s, s->nRefs, all_refs);
|
|
if (!all_refs) TRACE("all style references freed (good!)\n");
|
|
assert(s->nRefs>=0);
|
|
if (!s->nRefs)
|
|
ME_DestroyStyle(s);
|
|
}
|
|
|
|
ME_Style *ME_GetInsertStyle(ME_TextEditor *editor, int nCursor) {
|
|
if (ME_IsSelection(editor))
|
|
{
|
|
ME_Cursor c;
|
|
int from, to;
|
|
|
|
ME_GetSelection(editor, &from, &to);
|
|
ME_CursorFromCharOfs(editor, from, &c);
|
|
ME_AddRefStyle(c.pRun->member.run.style);
|
|
return c.pRun->member.run.style;
|
|
}
|
|
if (editor->pBuffer->pCharStyle) {
|
|
ME_AddRefStyle(editor->pBuffer->pCharStyle);
|
|
return editor->pBuffer->pCharStyle;
|
|
}
|
|
else
|
|
{
|
|
ME_Cursor *pCursor = &editor->pCursors[nCursor];
|
|
ME_DisplayItem *pRunItem = pCursor->pRun;
|
|
ME_DisplayItem *pPrevItem = NULL;
|
|
if (pCursor->nOffset) {
|
|
ME_Run *pRun = &pRunItem->member.run;
|
|
ME_AddRefStyle(pRun->style);
|
|
return pRun->style;
|
|
}
|
|
pPrevItem = ME_FindItemBack(pRunItem, diRunOrParagraph);
|
|
if (pPrevItem->type == diRun)
|
|
{
|
|
ME_AddRefStyle(pPrevItem->member.run.style);
|
|
return pPrevItem->member.run.style;
|
|
}
|
|
else
|
|
{
|
|
ME_AddRefStyle(pRunItem->member.run.style);
|
|
return pRunItem->member.run.style;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ME_SaveTempStyle(ME_TextEditor *editor)
|
|
{
|
|
ME_Style *old_style = editor->pBuffer->pCharStyle;
|
|
editor->pBuffer->pCharStyle = ME_GetInsertStyle(editor, 0);
|
|
if (old_style)
|
|
ME_ReleaseStyle(old_style);
|
|
}
|
|
|
|
void ME_ClearTempStyle(ME_TextEditor *editor)
|
|
{
|
|
if (!editor->pBuffer->pCharStyle) return;
|
|
ME_ReleaseStyle(editor->pBuffer->pCharStyle);
|
|
editor->pBuffer->pCharStyle = NULL;
|
|
}
|