Sweden-Number/dlls/riched20/style.c

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/*
* RichEdit style management functions
*
* Copyright 2004 by Krzysztof Foltman
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
#include "editor.h"
WINE_DEFAULT_DEBUG_CHANNEL(richedit);
WINE_DECLARE_DEBUG_CHANNEL(richedit_style);
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static int all_refs = 0;
/* the following routines assume that:
* - char2[AW] extends char[AW] by adding fields at the end of the charA form)
* - szFaceName is the last field of char[AW] form, and wWeight the first of 2[AW]
* - the difference between A and W form is the szFaceName as Ansi vs Unicode string
* - because of alignment, offset of wWeight field in 2[AW] structure *IS NOT*
* sizeof(char[AW])
*/
BOOL cfany_to_cf2w(CHARFORMAT2W *to, const CHARFORMAT2W *from)
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{
if (from->cbSize == sizeof(CHARFORMATA))
{
CHARFORMATA *f = (CHARFORMATA *)from;
CopyMemory(to, f, FIELD_OFFSET(CHARFORMATA, szFaceName));
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to->cbSize = sizeof(CHARFORMAT2W);
if (f->dwMask & CFM_FACE) {
MultiByteToWideChar(CP_ACP, 0, f->szFaceName, -1, to->szFaceName, ARRAY_SIZE(to->szFaceName));
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}
return TRUE;
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}
if (from->cbSize == sizeof(CHARFORMATW))
{
CHARFORMATW *f = (CHARFORMATW *)from;
CopyMemory(to, f, sizeof(*f));
/* theoretically, we don't need to zero the remaining memory */
ZeroMemory(&to->wWeight, sizeof(CHARFORMAT2W)-FIELD_OFFSET(CHARFORMAT2W, wWeight));
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to->cbSize = sizeof(CHARFORMAT2W);
return TRUE;
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}
if (from->cbSize == sizeof(CHARFORMAT2A))
{
CHARFORMAT2A *f = (CHARFORMAT2A *)from;
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/* copy the A structure without face name */
CopyMemory(to, f, FIELD_OFFSET(CHARFORMATA, szFaceName));
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/* convert face name */
if (f->dwMask & CFM_FACE)
MultiByteToWideChar(CP_ACP, 0, f->szFaceName, -1, to->szFaceName, ARRAY_SIZE(to->szFaceName));
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/* copy the rest of the 2A structure to 2W */
CopyMemory(&to->wWeight, &f->wWeight, sizeof(CHARFORMAT2A)-FIELD_OFFSET(CHARFORMAT2A, wWeight));
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to->cbSize = sizeof(CHARFORMAT2W);
return TRUE;
}
if (from->cbSize == sizeof(CHARFORMAT2W))
{
CopyMemory(to, from, sizeof(CHARFORMAT2W));
return TRUE;
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}
return FALSE;
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}
BOOL cf2w_to_cfany(CHARFORMAT2W *to, const CHARFORMAT2W *from)
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{
assert(from->cbSize == sizeof(CHARFORMAT2W));
if (to->cbSize == sizeof(CHARFORMATA))
{
CHARFORMATA *t = (CHARFORMATA *)to;
CopyMemory(t, from, FIELD_OFFSET(CHARFORMATA, szFaceName));
WideCharToMultiByte(CP_ACP, 0, from->szFaceName, -1, t->szFaceName, sizeof(t->szFaceName), NULL, NULL);
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t->cbSize = sizeof(*t); /* it was overwritten by CopyMemory */
t->dwMask &= CFM_ALL;
t->dwEffects &= CFM_EFFECTS;
return TRUE;
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}
if (to->cbSize == sizeof(CHARFORMATW))
{
CHARFORMATW *t = (CHARFORMATW *)to;
CopyMemory(t, from, sizeof(*t));
t->cbSize = sizeof(*t); /* it was overwritten by CopyMemory */
t->dwMask &= CFM_ALL;
t->dwEffects &= CFM_EFFECTS;
return TRUE;
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}
if (to->cbSize == sizeof(CHARFORMAT2A))
{
CHARFORMAT2A *t = (CHARFORMAT2A *)to;
/* copy the A structure without face name */
CopyMemory(t, from, FIELD_OFFSET(CHARFORMATA, szFaceName));
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/* convert face name */
WideCharToMultiByte(CP_ACP, 0, from->szFaceName, -1, t->szFaceName, sizeof(t->szFaceName), NULL, NULL);
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/* copy the rest of the 2A structure to 2W */
CopyMemory(&t->wWeight, &from->wWeight, sizeof(CHARFORMAT2W)-FIELD_OFFSET(CHARFORMAT2W,wWeight));
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t->cbSize = sizeof(*t); /* it was overwritten by CopyMemory */
return TRUE;
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}
if (to->cbSize == sizeof(CHARFORMAT2W))
{
CopyMemory(to, from, sizeof(CHARFORMAT2W));
return TRUE;
}
return FALSE;
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}
ME_Style *ME_MakeStyle(CHARFORMAT2W *style)
{
ME_Style *s = heap_alloc(sizeof(*s));
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assert(style->cbSize == sizeof(CHARFORMAT2W));
s->fmt = *style;
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s->nRefs = 1;
s->font_cache = NULL;
memset(&s->tm, 0, sizeof(s->tm));
s->tm.tmAscent = -1;
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s->script_cache = NULL;
list_init(&s->entry);
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all_refs++;
TRACE_(richedit_style)("ME_MakeStyle %p, total refs=%d\n", s, all_refs);
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return s;
}
#define COPY_STYLE_ITEM(mask, member) \
if (mod->dwMask & mask) { \
fmt.dwMask |= mask;\
fmt.member = mod->member;\
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}
#define COPY_STYLE_ITEM_MEMCPY(mask, member) \
if (mod->dwMask & mask) { \
fmt.dwMask |= mask;\
CopyMemory(fmt.member, mod->member, sizeof(mod->member));\
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}
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void ME_InitCharFormat2W(CHARFORMAT2W *pFmt)
{
ZeroMemory(pFmt, sizeof(CHARFORMAT2W));
pFmt->cbSize = sizeof(CHARFORMAT2W);
}
ME_Style *ME_ApplyStyle(ME_TextEditor *editor, ME_Style *sSrc, CHARFORMAT2W *mod)
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{
CHARFORMAT2W fmt = sSrc->fmt;
ME_Style *s;
assert(mod->cbSize == sizeof(CHARFORMAT2W));
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COPY_STYLE_ITEM(CFM_ANIMATION, bAnimation);
COPY_STYLE_ITEM(CFM_BACKCOLOR, crBackColor);
COPY_STYLE_ITEM(CFM_CHARSET, bCharSet);
COPY_STYLE_ITEM(CFM_COLOR, crTextColor);
COPY_STYLE_ITEM_MEMCPY(CFM_FACE, szFaceName);
COPY_STYLE_ITEM(CFM_KERNING, wKerning);
COPY_STYLE_ITEM(CFM_LCID, lcid);
COPY_STYLE_ITEM(CFM_OFFSET, yOffset);
COPY_STYLE_ITEM(CFM_REVAUTHOR, bRevAuthor);
if (mod->dwMask & CFM_SIZE) {
fmt.dwMask |= CFM_SIZE;
fmt.yHeight = min(mod->yHeight, yHeightCharPtsMost * 20);
}
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COPY_STYLE_ITEM(CFM_SPACING, sSpacing);
COPY_STYLE_ITEM(CFM_STYLE, sStyle);
COPY_STYLE_ITEM(CFM_WEIGHT, wWeight);
/* FIXME: this is not documented this way, but that's the more logical */
COPY_STYLE_ITEM(CFM_FACE, bPitchAndFamily);
fmt.dwEffects &= ~(mod->dwMask);
fmt.dwEffects |= mod->dwEffects & mod->dwMask;
fmt.dwMask |= mod->dwMask;
if (mod->dwMask & CFM_COLOR)
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{
if (mod->dwEffects & CFE_AUTOCOLOR)
fmt.dwEffects |= CFE_AUTOCOLOR;
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else
fmt.dwEffects &= ~CFE_AUTOCOLOR;
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}
COPY_STYLE_ITEM(CFM_UNDERLINETYPE, bUnderlineType);
/* If the CFM_UNDERLINE effect is not specified, set it appropriately */
if ((mod->dwMask & CFM_UNDERLINETYPE) && !(mod->dwMask & CFM_UNDERLINE))
{
fmt.dwMask |= CFM_UNDERLINE;
if (mod->bUnderlineType == CFU_UNDERLINENONE)
fmt.dwEffects &= ~CFE_UNDERLINE;
else
fmt.dwEffects |= CFE_UNDERLINE;
}
if (mod->dwMask & CFM_BOLD && !(mod->dwMask & CFM_WEIGHT))
{
fmt.wWeight = (mod->dwEffects & CFE_BOLD) ? FW_BOLD : FW_NORMAL;
} else if (mod->dwMask & CFM_WEIGHT && !(mod->dwMask & CFM_BOLD)) {
if (mod->wWeight > FW_NORMAL)
fmt.dwEffects |= CFE_BOLD;
else
fmt.dwEffects &= ~CFE_BOLD;
}
LIST_FOR_EACH_ENTRY(s, &editor->style_list, ME_Style, entry)
{
if (!memcmp( &s->fmt, &fmt, sizeof(fmt) ))
{
TRACE_(richedit_style)("found existing style %p\n", s);
ME_AddRefStyle( s );
return s;
}
}
s = ME_MakeStyle( &fmt );
if (s)
list_add_head( &editor->style_list, &s->entry );
TRACE_(richedit_style)("created new style %p\n", s);
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return s;
}
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void ME_CopyCharFormat(CHARFORMAT2W *pDest, const CHARFORMAT2W *pSrc)
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{
/* using this with non-2W structs is forbidden */
assert(pSrc->cbSize == sizeof(CHARFORMAT2W));
assert(pDest->cbSize == sizeof(CHARFORMAT2W));
*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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{
*p += sprintf(*p, "%-22s%s\n", name, (fmt->dwMask & mask) ? ((fmt->dwEffects & mask) ? "YES" : "no") : "N/A");
}
void ME_DumpStyle(ME_Style *s)
{
char buf[2048];
ME_DumpStyleToBuf(&s->fmt, buf);
TRACE_(richedit_style)("%s\n", buf);
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}
void ME_DumpStyleToBuf(CHARFORMAT2W *pFmt, char buf[2048])
{
/* FIXME only CHARFORMAT styles implemented */
/* this function sucks, doesn't check for buffer overruns but it's "good enough" as for debug code */
char *p;
p = buf;
p += sprintf(p, "Font face: ");
if (pFmt->dwMask & CFM_FACE) {
WCHAR *q = pFmt->szFaceName;
while(*q) {
*p++ = (*q > 255) ? '?' : *q;
q++;
}
} else
p += sprintf(p, "N/A");
if (pFmt->dwMask & CFM_SIZE)
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p += sprintf(p, "\nFont size: %d\n", pFmt->yHeight);
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else
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
p += sprintf(p, "Char offset: N/A\n");
if (pFmt->dwMask & CFM_CHARSET)
p += sprintf(p, "Font charset: %d\n", (int)pFmt->bCharSet);
else
p += sprintf(p, "Font charset: N/A\n");
/* I'm assuming CFM_xxx and CFE_xxx are the same values, fortunately it IS true wrt used flags*/
ME_DumpStyleEffect(&p, "Font bold:", pFmt, CFM_BOLD);
ME_DumpStyleEffect(&p, "Font italic:", pFmt, CFM_ITALIC);
ME_DumpStyleEffect(&p, "Font underline:", pFmt, CFM_UNDERLINE);
ME_DumpStyleEffect(&p, "Font strikeout:", pFmt, CFM_STRIKEOUT);
ME_DumpStyleEffect(&p, "Hidden text:", pFmt, CFM_HIDDEN);
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p += sprintf(p, "Text color: ");
if (pFmt->dwMask & CFM_COLOR)
{
if (pFmt->dwEffects & CFE_AUTOCOLOR)
p += sprintf(p, "auto\n");
else
p += sprintf(p, "%06x\n", (int)pFmt->crTextColor);
}
else
p += sprintf(p, "N/A\n");
ME_DumpStyleEffect(&p, "Text protected:", pFmt, CFM_PROTECTED);
}
static void
ME_LogFontFromStyle(ME_Context* c, LOGFONTW *lf, const ME_Style *s)
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{
ZeroMemory(lf, sizeof(LOGFONTW));
lstrcpyW(lf->lfFaceName, s->fmt.szFaceName);
lf->lfHeight = ME_twips2pointsY(c, -s->fmt.yHeight);
lf->lfWeight = FW_NORMAL;
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if (s->fmt.dwEffects & s->fmt.dwMask & CFM_BOLD)
lf->lfWeight = FW_BOLD;
if (s->fmt.dwMask & CFM_WEIGHT)
lf->lfWeight = s->fmt.wWeight;
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if (s->fmt.dwEffects & s->fmt.dwMask & CFM_ITALIC)
lf->lfItalic = 1;
if ((s->fmt.dwEffects & s->fmt.dwMask & CFM_UNDERLINE) &&
!(s->fmt.dwEffects & CFE_LINK) &&
s->fmt.bUnderlineType == CFU_CF1UNDERLINE)
lf->lfUnderline = 1;
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if (s->fmt.dwEffects & s->fmt.dwMask & CFM_STRIKEOUT)
lf->lfStrikeOut = 1;
if (s->fmt.dwEffects & s->fmt.dwMask & (CFM_SUBSCRIPT|CFM_SUPERSCRIPT))
lf->lfHeight = (lf->lfHeight*2)/3;
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/*lf.lfQuality = PROOF_QUALITY; */
if (s->fmt.dwMask & CFM_FACE)
lf->lfPitchAndFamily = s->fmt.bPitchAndFamily;
if (s->fmt.dwMask & CFM_CHARSET)
lf->lfCharSet = s->fmt.bCharSet;
}
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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);
ry = GetDeviceCaps(hDC, LOGPIXELSY);
lstrcpyW(fmt->szFaceName, lf->lfFaceName);
fmt->dwEffects = 0;
fmt->dwMask = CFM_WEIGHT|CFM_BOLD|CFM_ITALIC|CFM_UNDERLINE|CFM_UNDERLINETYPE|CFM_STRIKEOUT|CFM_SIZE|CFM_FACE|CFM_CHARSET;
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fmt->wWeight = lf->lfWeight;
fmt->yHeight = -lf->lfHeight*1440/ry;
if (lf->lfWeight > FW_NORMAL) fmt->dwEffects |= CFM_BOLD;
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if (lf->lfItalic) fmt->dwEffects |= CFM_ITALIC;
if (lf->lfUnderline) fmt->dwEffects |= CFM_UNDERLINE;
fmt->bUnderlineType = CFU_UNDERLINE;
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if (lf->lfStrikeOut) fmt->dwEffects |= CFM_STRIKEOUT;
fmt->bPitchAndFamily = lf->lfPitchAndFamily;
fmt->bCharSet = lf->lfCharSet;
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}
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static BOOL ME_IsFontEqual(const LOGFONTW *p1, const LOGFONTW *p2)
{
if (memcmp(p1, p2, sizeof(LOGFONTW)-sizeof(p1->lfFaceName)))
return FALSE;
if (wcscmp(p1->lfFaceName, p2->lfFaceName))
return FALSE;
return TRUE;
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}
static void release_font_cache(ME_FontCacheItem *item)
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{
if (item->nRefs > 0)
{
item->nRefs--;
item->nAge = 0;
}
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}
void select_style( ME_Context *c, ME_Style *s )
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{
HFONT old_font;
LOGFONTW lf;
int i, empty, age = 0x7FFFFFFF;
ME_FontCacheItem *item;
if (c->current_style == s) return;
if (s)
{
ME_LogFontFromStyle( c, &lf, s );
for (i = 0; i < HFONT_CACHE_SIZE; i++)
c->editor->pFontCache[i].nAge++;
for (i = 0, empty = -1, age = 0; i < HFONT_CACHE_SIZE; i++)
{
item = &c->editor->pFontCache[i];
if (!item->nRefs)
{
if (item->nAge > age)
{
empty = i;
age = item->nAge;
}
}
if (item->hFont && ME_IsFontEqual( &item->lfSpecs, &lf ))
break;
}
if (i < HFONT_CACHE_SIZE) /* found */
{
item = &c->editor->pFontCache[i];
TRACE_(richedit_style)( "font reused %d\n", i );
item->nRefs++;
}
else
{
assert(empty != -1);
item = &c->editor->pFontCache[empty];
if (item->hFont)
{
TRACE_(richedit_style)( "font deleted %d\n", empty );
DeleteObject(item->hFont);
item->hFont = NULL;
}
item->hFont = CreateFontIndirectW( &lf );
TRACE_(richedit_style)( "font created %d\n", empty );
item->nRefs = 1;
item->lfSpecs = lf;
}
s->font_cache = item;
old_font = SelectObject( c->hDC, item->hFont );
GetTextMetricsW( c->hDC, &s->tm );
if (!c->orig_font) c->orig_font = old_font;
}
else
{
SelectObject( c->hDC, c->orig_font );
c->orig_font = NULL;
}
if (c->current_style)
{
release_font_cache( c->current_style->font_cache );
c->current_style->font_cache = NULL;
}
c->current_style = s;
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return;
}
void ME_DestroyStyle(ME_Style *s)
{
list_remove( &s->entry );
if (s->font_cache)
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{
release_font_cache( s->font_cache );
s->font_cache = NULL;
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}
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ScriptFreeCache( &s->script_cache );
heap_free(s);
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}
void ME_AddRefStyle(ME_Style *s)
{
assert(s->nRefs>0); /* style with 0 references isn't supposed to exist */
s->nRefs++;
all_refs++;
TRACE_(richedit_style)("ME_AddRefStyle %p, new refs=%d, total refs=%d\n", s, s->nRefs, all_refs);
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}
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);
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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");
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assert(s->nRefs>=0);
if (!s->nRefs)
ME_DestroyStyle(s);
}
ME_Style *style_get_insert_style( ME_TextEditor *editor, ME_Cursor *cursor )
{
ME_Style *style;
ME_Cursor *from, *to;
ME_Run *prev;
if (ME_IsSelection( editor ))
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{
ME_GetSelection( editor, &from, &to );
style = from->run->style;
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}
else if (editor->pBuffer->pCharStyle)
style = editor->pBuffer->pCharStyle;
else if (!cursor->nOffset && (prev = run_prev( cursor->run )))
style = prev->style;
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else
style = cursor->run->style;
ME_AddRefStyle( style );
return style;
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}
void ME_SaveTempStyle(ME_TextEditor *editor, ME_Style *style)
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{
ME_Style *old_style = editor->pBuffer->pCharStyle;
if (style) ME_AddRefStyle( style );
editor->pBuffer->pCharStyle = style;
if (old_style) ME_ReleaseStyle( old_style );
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}
void ME_ClearTempStyle(ME_TextEditor *editor)
{
if (!editor->pBuffer->pCharStyle) return;
ME_ReleaseStyle(editor->pBuffer->pCharStyle);
editor->pBuffer->pCharStyle = NULL;
}
/******************************************************************************
* ME_SetDefaultCharFormat
*
* Applies a style change to the default character style.
*
* The default style is special in that it is mutable - runs
* in the document that have this style should change if the
* default style changes. That means we need to fix up this
* style manually.
*/
void ME_SetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *mod)
{
ME_Style *style, *def = editor->pBuffer->pDefaultStyle;
assert(mod->cbSize == sizeof(CHARFORMAT2W));
style = ME_ApplyStyle(editor, def, mod);
def->fmt = style->fmt;
def->tm = style->tm;
if (def->font_cache)
{
release_font_cache( def->font_cache );
def->font_cache = NULL;
}
ScriptFreeCache( &def->script_cache );
ME_ReleaseStyle( style );
editor_mark_rewrap_all( editor );
}