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wine/dlls/winex11.drv/text.c

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/*
* X11 graphics driver text functions
*
* Copyright 1993,1994 Alexandre Julliard
*
* 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
*/
#include "config.h"
#include <stdarg.h>
#include <stdlib.h>
#include <math.h>
#include "windef.h"
#include "winbase.h"
#include "x11font.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(text);
#define IROUND(x) (int)((x)>0? (x)+0.5 : (x) - 0.5)
/***********************************************************************
* X11DRV_ExtTextOut
*/
BOOL X11DRV_ExtTextOut( PHYSDEV dev, INT x, INT y, UINT flags,
const RECT *lprect, LPCWSTR wstr, UINT count, const INT *lpDx )
{
X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
RGNDATA *saved_region = NULL;
unsigned int i;
fontObject* pfo = XFONT_GetFontObject( physDev->font );
XFontStruct* font;
BOOL rotated = FALSE;
XChar2b *str2b = NULL;
BOOL dibUpdateFlag = FALSE;
BOOL result = TRUE;
if (!pfo)
{
dev = GET_NEXT_PHYSDEV( dev, pExtTextOut );
return dev->funcs->pExtTextOut( dev, x, y, flags, lprect, wstr, count, lpDx );
}
if (!X11DRV_SetupGCForText( physDev )) return TRUE;
font = pfo->fs;
if (pfo->lf.lfEscapement && pfo->lpX11Trans)
rotated = TRUE;
TRACE("hdc=%p df=%04x %d,%d rc %s %s, %d flags=%d lpDx=%p\n",
dev->hdc, (UINT16)physDev->font, x, y, wine_dbgstr_rect(lprect),
debugstr_wn (wstr, count), count, flags, lpDx);
/* Draw the rectangle */
if (flags & ETO_OPAQUE)
{
X11DRV_LockDIBSection( physDev, DIB_Status_GdiMod );
dibUpdateFlag = TRUE;
wine_tsx11_lock();
XSetForeground( gdi_display, physDev->gc, physDev->backgroundPixel );
XFillRectangle( gdi_display, physDev->drawable, physDev->gc,
physDev->dc_rect.left + lprect->left, physDev->dc_rect.top + lprect->top,
lprect->right - lprect->left, lprect->bottom - lprect->top );
wine_tsx11_unlock();
}
if (!count) goto END; /* Nothing more to do */
/* Set the clip region */
if (flags & ETO_CLIPPED)
{
HRGN clip_region = CreateRectRgnIndirect( lprect );
saved_region = add_extra_clipping_region( physDev, clip_region );
DeleteObject( clip_region );
}
/* Draw the text background if necessary */
if (!dibUpdateFlag)
{
X11DRV_LockDIBSection( physDev, DIB_Status_GdiMod );
dibUpdateFlag = TRUE;
}
/* Draw the text (count > 0 verified) */
if (!(str2b = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, wstr, count )))
{
result = FALSE;
goto END;
}
wine_tsx11_lock();
XSetForeground( gdi_display, physDev->gc, physDev->textPixel );
wine_tsx11_unlock();
if(!rotated)
{
if (!lpDx)
{
X11DRV_cptable[pfo->fi->cptable].pDrawString(
pfo, gdi_display, physDev->drawable, physDev->gc,
physDev->dc_rect.left + x, physDev->dc_rect.top + y, str2b, count );
}
else
{
XTextItem16 *items;
items = HeapAlloc( GetProcessHeap(), 0, count * sizeof(XTextItem16) );
if(items == NULL)
{
result = FALSE;
goto END;
}
items[0].chars = str2b;
items[0].delta = 0;
items[0].nchars = 1;
items[0].font = None;
for(i = 1; i < count; i++)
{
items[i].chars = str2b + i;
items[i].delta = (flags & ETO_PDY) ? lpDx[(i - 1) * 2] : lpDx[i - 1];
items[i].delta -= X11DRV_cptable[pfo->fi->cptable].pTextWidth( pfo, str2b + i - 1, 1 );
items[i].nchars = 1;
items[i].font = None;
}
X11DRV_cptable[pfo->fi->cptable].pDrawText( pfo, gdi_display,
physDev->drawable, physDev->gc,
physDev->dc_rect.left + x, physDev->dc_rect.top + y, items, count );
HeapFree( GetProcessHeap(), 0, items );
}
}
else /* rotated */
{
/* have to render character by character. */
double offset = 0.0;
UINT i;
for (i=0; i<count; i++)
{
int char_metric_offset = str2b[i].byte2 + (str2b[i].byte1 << 8)
- font->min_char_or_byte2;
int x_i = IROUND((double) (physDev->dc_rect.left + x) + offset *
pfo->lpX11Trans->a / pfo->lpX11Trans->pixelsize );
int y_i = IROUND((double) (physDev->dc_rect.top + y) - offset *
pfo->lpX11Trans->b / pfo->lpX11Trans->pixelsize );
X11DRV_cptable[pfo->fi->cptable].pDrawString(
pfo, gdi_display, physDev->drawable, physDev->gc,
x_i, y_i, &str2b[i], 1);
if (lpDx)
{
offset += (flags & ETO_PDY) ? lpDx[i * 2] : lpDx[i];
}
else
{
offset += (double) (font->per_char ?
font->per_char[char_metric_offset].attributes:
font->min_bounds.attributes)
* pfo->lpX11Trans->pixelsize / 1000.0;
}
}
}
END:
HeapFree( GetProcessHeap(), 0, str2b );
if (dibUpdateFlag) X11DRV_UnlockDIBSection( physDev, TRUE );
restore_clipping_region( physDev, saved_region );
return result;
}
/***********************************************************************
* X11DRV_GetTextExtentExPoint
*/
BOOL X11DRV_GetTextExtentExPoint( PHYSDEV dev, LPCWSTR str, INT count,
INT maxExt, LPINT lpnFit, LPINT alpDx, LPSIZE size )
{
X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
fontObject* pfo = XFONT_GetFontObject( physDev->font );
TRACE("%s %d\n", debugstr_wn(str,count), count);
if( pfo ) {
XChar2b *p = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, str, count );
if (!p) return FALSE;
if( !pfo->lpX11Trans ) {
int dir, ascent, descent;
int info_width;
X11DRV_cptable[pfo->fi->cptable].pTextExtents( pfo, p,
count, &dir, &ascent, &descent, &info_width,
maxExt, lpnFit, alpDx );
size->cx = info_width;
size->cy = pfo->fs->ascent + pfo->fs->descent;
} else {
INT i;
INT nfit = 0;
float x = 0.0, y = 0.0;
float scaled_x = 0.0, pixsize = pfo->lpX11Trans->pixelsize;
/* FIXME: Deal with *_char_or_byte2 != 0 situations */
for(i = 0; i < count; i++) {
x += pfo->fs->per_char ?
pfo->fs->per_char[p[i].byte2 - pfo->fs->min_char_or_byte2].attributes :
pfo->fs->min_bounds.attributes;
scaled_x = x * pixsize / 1000.0;
if (alpDx)
alpDx[i] = scaled_x;
if (scaled_x <= maxExt)
++nfit;
}
y = pfo->lpX11Trans->RAW_ASCENT + pfo->lpX11Trans->RAW_DESCENT;
TRACE("x = %f y = %f\n", x, y);
size->cx = x * pfo->lpX11Trans->pixelsize / 1000.0;
size->cy = y * pfo->lpX11Trans->pixelsize / 1000.0;
if (lpnFit)
*lpnFit = nfit;
}
size->cx *= pfo->rescale;
size->cy *= pfo->rescale;
HeapFree( GetProcessHeap(), 0, p );
return TRUE;
}
dev = GET_NEXT_PHYSDEV( dev, pGetTextExtentExPoint );
return dev->funcs->pGetTextExtentExPoint( dev, str, count, maxExt, lpnFit, alpDx, size );
}
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