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wine/dlls/winex11.drv/text.c

252 lines
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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 CDECL
X11DRV_ExtTextOut( X11DRV_PDEVICE *physDev, INT x, INT y, UINT flags,
const RECT *lprect, LPCWSTR wstr, UINT count,
const INT *lpDx )
{
unsigned int i;
fontObject* pfo;
XFontStruct* font;
BOOL rotated = FALSE;
XChar2b *str2b = NULL;
BOOL dibUpdateFlag = FALSE;
BOOL result = TRUE;
HRGN saved_region = 0;
if(physDev->has_gdi_font)
return X11DRV_XRender_ExtTextOut(physDev, x, y, flags, lprect, wstr, count, lpDx);
if (!X11DRV_SetupGCForText( physDev )) return TRUE;
pfo = XFONT_GetFontObject( physDev->font );
font = pfo->fs;
if (pfo->lf.lfEscapement && pfo->lpX11Trans)
rotated = TRUE;
TRACE("hdc=%p df=%04x %d,%d %s, %d flags=%d lpDx=%p\n",
physDev->hdc, (UINT16)(physDev->font), x, y,
debugstr_wn (wstr, count), count, flags, lpDx);
if (lprect != NULL) TRACE("\trect=(%d,%d - %d,%d)\n",
lprect->left, lprect->top,
lprect->right, lprect->bottom );
/* 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;
clip_region = CreateRectRgnIndirect( lprect );
/* make a copy of the current device region */
saved_region = CreateRectRgn( 0, 0, 0, 0 );
CombineRgn( saved_region, physDev->region, 0, RGN_COPY );
X11DRV_SetDeviceClipping( physDev, saved_region, 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 )))
goto FAIL;
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, *pitem;
pitem = items = HeapAlloc( GetProcessHeap(), 0,
count * sizeof(XTextItem16) );
if(items == NULL) goto FAIL;
for(i = 0; i < count; i++)
{
pitem->chars = str2b + i;
pitem->delta = lpDx[i];
pitem->nchars = 1;
pitem->font = None;
pitem++;
}
X11DRV_cptable[pfo->fi->cptable].pDrawText( pfo, gdi_display,
physDev->drawable, physDev->gc,
physDev->dc_rect.left + x, physDev->dc_rect.top + y, items, pitem - items );
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 += lpDx[i];
}
else
{
offset += (double) (font->per_char ?
font->per_char[char_metric_offset].attributes:
font->min_bounds.attributes)
* pfo->lpX11Trans->pixelsize / 1000.0;
}
}
}
HeapFree( GetProcessHeap(), 0, str2b );
if (flags & ETO_CLIPPED)
{
/* restore the device region */
X11DRV_SetDeviceClipping( physDev, saved_region, 0 );
DeleteObject( saved_region );
}
goto END;
FAIL:
HeapFree( GetProcessHeap(), 0, str2b );
result = FALSE;
END:
if (dibUpdateFlag) X11DRV_UnlockDIBSection( physDev, TRUE );
return result;
}
/***********************************************************************
* X11DRV_GetTextExtentExPoint
*/
BOOL CDECL X11DRV_GetTextExtentExPoint( X11DRV_PDEVICE *physDev, LPCWSTR str, INT count,
INT maxExt, LPINT lpnFit, LPINT alpDx, LPSIZE size )
{
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;
}
return FALSE;
}
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