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goma/wine/e10b58425f8bda7fcec3977d12192aba275c2e4d/./dlls/x11drv/text.c
blob: bcb37e8c65e51a66b7c835f02e4b56564052a001 [file]
/*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <stdarg.h>
#include <stdlib.h>
#include <math.h>
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "x11font.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(text);
#define SWAP_INT(a,b) { int t = a; a = b; b = t; }
#define IROUND(x) (int)((x)>0? (x)+0.5 : (x) - 0.5)
/***********************************************************************
* X11DRV_ExtTextOut
*/
BOOL
X11DRV_ExtTextOut( X11DRV_PDEVICE *physDev, INT x, INT y, UINT flags,
const RECT *lprect, LPCWSTR wstr, UINT count,
const INT *lpDx, INT breakExtra )
{
unsigned int i;
fontObject* pfo;
INT width, ascent, descent, xwidth, ywidth;
XFontStruct* font;
RECT rect;
char dfBreakChar, lfUnderline, lfStrikeOut;
BOOL rotated = FALSE;
XChar2b *str2b = NULL;
BOOL dibUpdateFlag = FALSE;
BOOL result = TRUE;
HRGN saved_region = 0;
POINT pt;
UINT align;
INT charExtra;
if(physDev->has_gdi_font)
return X11DRV_XRender_ExtTextOut(physDev, x, y, flags, lprect, wstr, count, lpDx, breakExtra);
if (!X11DRV_SetupGCForText( physDev )) return TRUE;
align = GetTextAlign( physDev->hdc );
charExtra = GetTextCharacterExtra( physDev->hdc );
pfo = XFONT_GetFontObject( physDev->font );
font = pfo->fs;
if (pfo->lf.lfEscapement && pfo->lpX11Trans)
rotated = TRUE;
dfBreakChar = (char)pfo->fi->df.dfBreakChar;
lfUnderline = (pfo->fo_flags & FO_SYNTH_UNDERLINE) ? 1 : 0;
lfStrikeOut = (pfo->fo_flags & FO_SYNTH_STRIKEOUT) ? 1 : 0;
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);
/* some strings sent here end in a newline for whatever reason. I have no
clue what the right treatment should be in general, but ignoring
terminating newlines seems ok. MW, April 1998. */
if (count > 0 && wstr[count - 1] == '\n') count--;
if (lprect != NULL) TRACE("\trect=(%ld,%ld - %ld,%ld)\n",
lprect->left, lprect->top,
lprect->right, lprect->bottom );
/* Setup coordinates */
if (align & TA_UPDATECP)
{
GetCurrentPositionEx( physDev->hdc, &pt );
x = pt.x;
y = pt.y;
}
if (flags & (ETO_OPAQUE | ETO_CLIPPED)) /* there's a rectangle */
{
if (!lprect) /* not always */
{
SIZE sz;
if (flags & ETO_CLIPPED) /* Can't clip with no rectangle */
return FALSE;
if (!X11DRV_GetTextExtentPoint( physDev, wstr, count, &sz ))
return FALSE;
rect.left = x;
rect.right = x + sz.cx;
rect.top = y;
rect.bottom = y + sz.cy;
}
else
{
rect = *lprect;
}
LPtoDP(physDev->hdc, (POINT*)&rect, 2);
if (rect.right < rect.left) SWAP_INT( rect.left, rect.right );
if (rect.bottom < rect.top) SWAP_INT( rect.top, rect.bottom );
}
pt.x = x;
pt.y = y;
LPtoDP(physDev->hdc, &pt, 1);
x = pt.x;
y = pt.y;
TRACE("\treal coord: x=%i, y=%i, rect=(%ld,%ld - %ld,%ld)\n",
x, y, rect.left, rect.top, rect.right, rect.bottom);
/* Draw the rectangle */
if (flags & ETO_OPAQUE)
{
X11DRV_LockDIBSection( physDev, DIB_Status_GdiMod, FALSE );
dibUpdateFlag = TRUE;
wine_tsx11_lock();
XSetForeground( gdi_display, physDev->gc, physDev->backgroundPixel );
XFillRectangle( gdi_display, physDev->drawable, physDev->gc,
physDev->org.x + rect.left, physDev->org.y + rect.top,
rect.right-rect.left, rect.bottom-rect.top );
wine_tsx11_unlock();
}
if (!count) goto END; /* Nothing more to do */
/* Compute text starting position */
if (lpDx) /* have explicit character cell x offsets in logical coordinates */
{
for (i = width = 0; i < count; i++) width += lpDx[i];
width = X11DRV_XWStoDS(physDev, width);
}
else
{
SIZE sz;
if (!X11DRV_GetTextExtentPoint( physDev, wstr, count, &sz ))
{
result = FALSE;
goto END;
}
width = X11DRV_XWStoDS(physDev, sz.cx);
}
ascent = pfo->lpX11Trans ? pfo->lpX11Trans->ascent : font->ascent;
descent = pfo->lpX11Trans ? pfo->lpX11Trans->descent : font->descent;
xwidth = pfo->lpX11Trans ? width * pfo->lpX11Trans->a /
pfo->lpX11Trans->pixelsize : width;
ywidth = pfo->lpX11Trans ? width * pfo->lpX11Trans->b /
pfo->lpX11Trans->pixelsize : 0;
switch( align & (TA_LEFT | TA_RIGHT | TA_CENTER) )
{
case TA_LEFT:
if (align & TA_UPDATECP) {
pt.x = x + xwidth;
pt.y = y - ywidth;
DPtoLP(physDev->hdc, &pt, 1);
MoveToEx(physDev->hdc, pt.x, pt.y, NULL);
}
break;
case TA_RIGHT:
x -= xwidth;
y += ywidth;
if (align & TA_UPDATECP) {
pt.x = x;
pt.y = y;
DPtoLP(physDev->hdc, &pt, 1);
MoveToEx(physDev->hdc, pt.x, pt.y, NULL);
}
break;
case TA_CENTER:
x -= xwidth / 2;
y += ywidth / 2;
break;
}
switch( align & (TA_TOP | TA_BOTTOM | TA_BASELINE) )
{
case TA_TOP:
x -= pfo->lpX11Trans ? ascent * pfo->lpX11Trans->c /
pfo->lpX11Trans->pixelsize : 0;
y += pfo->lpX11Trans ? ascent * pfo->lpX11Trans->d /
pfo->lpX11Trans->pixelsize : ascent;
break;
case TA_BOTTOM:
x += pfo->lpX11Trans ? descent * pfo->lpX11Trans->c /
pfo->lpX11Trans->pixelsize : 0;
y -= pfo->lpX11Trans ? descent * pfo->lpX11Trans->d /
pfo->lpX11Trans->pixelsize : descent;
break;
case TA_BASELINE:
break;
}
/* Set the clip region */
if (flags & ETO_CLIPPED)
{
HRGN clip_region;
RECT clip_rect = *lprect;
LPtoDP( physDev->hdc, (POINT *)&clip_rect, 2 );
clip_region = CreateRectRgnIndirect( &clip_rect );
/* 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, FALSE );
dibUpdateFlag = TRUE;
}
if (GetBkMode( physDev->hdc ) != TRANSPARENT)
{
/* If rectangle is opaque and clipped, do nothing */
if (!(flags & ETO_CLIPPED) || !(flags & ETO_OPAQUE))
{
/* Only draw if rectangle is not opaque or if some */
/* text is outside the rectangle */
if (!(flags & ETO_OPAQUE) ||
(x < rect.left) ||
(x + width >= rect.right) ||
(y - ascent < rect.top) ||
(y + descent >= rect.bottom))
{
wine_tsx11_lock();
XSetForeground( gdi_display, physDev->gc, physDev->backgroundPixel );
XFillRectangle( gdi_display, physDev->drawable, physDev->gc,
physDev->org.x + x, physDev->org.y + y - ascent,
width, ascent + descent );
wine_tsx11_unlock();
}
}
}
/* 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 (!charExtra && !breakExtra && !lpDx)
{
X11DRV_cptable[pfo->fi->cptable].pDrawString(
pfo, gdi_display, physDev->drawable, physDev->gc,
physDev->org.x + x, physDev->org.y + y, str2b, count );
}
else /* Now the fun begins... */
{
XTextItem16 *items, *pitem;
int delta;
/* allocate max items */
pitem = items = HeapAlloc( GetProcessHeap(), 0,
count * sizeof(XTextItem16) );
if(items == NULL) goto FAIL;
delta = i = 0;
if( lpDx ) /* explicit character widths */
{
long ve_we;
unsigned short err = 0;
ve_we = X11DRV_XWStoDS( physDev, 0x10000 );
while (i < count)
{
/* initialize text item with accumulated delta */
long sum;
long fSum;
sum = 0;
pitem->chars = str2b + i;
pitem->delta = delta;
pitem->nchars = 0;
pitem->font = None;
delta = 0;
/* add characters to the same XTextItem
* until new delta becomes non-zero */
do
{
sum += lpDx[i];
fSum = sum*ve_we+err;
delta = (short)HIWORD(fSum)
- X11DRV_cptable[pfo->fi->cptable].pTextWidth(
pfo, pitem->chars, pitem->nchars+1);
pitem->nchars++;
} while ((++i < count) && !delta);
pitem++;
err = LOWORD(fSum);
}
}
else /* charExtra or breakExtra */
{
while (i < count)
{
pitem->chars = str2b + i;
pitem->delta = delta;
pitem->nchars = 0;
pitem->font = None;
delta = 0;
do
{
delta += charExtra;
if (str2b[i].byte2 == (char)dfBreakChar)
delta += breakExtra;
pitem->nchars++;
} while ((++i < count) && !delta);
pitem++;
}
}
X11DRV_cptable[pfo->fi->cptable].pDrawText( pfo, gdi_display,
physDev->drawable, physDev->gc,
physDev->org.x + x, physDev->org.y + y, items, pitem - items );
HeapFree( GetProcessHeap(), 0, items );
}
}
else /* rotated */
{
/* have to render character by character. */
double offset = 0.0;
int 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->org.x + x) + offset *
pfo->lpX11Trans->a / pfo->lpX11Trans->pixelsize );
int y_i = IROUND((double) (physDev->org.y + 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 += X11DRV_XWStoDS(physDev, lpDx[i]);
}
else
{
offset += (double) (font->per_char ?
font->per_char[char_metric_offset].attributes:
font->min_bounds.attributes)
* pfo->lpX11Trans->pixelsize / 1000.0;
offset += charExtra;
if (str2b[i].byte2 == (char)dfBreakChar)
offset += breakExtra;
}
}
}
HeapFree( GetProcessHeap(), 0, str2b );
/* Draw underline and strike-out if needed */
wine_tsx11_lock();
if (lfUnderline)
{
long linePos, lineWidth;
if (!XGetFontProperty( font, XA_UNDERLINE_POSITION, &linePos ))
linePos = descent - 1;
if (!XGetFontProperty( font, XA_UNDERLINE_THICKNESS, &lineWidth ))
lineWidth = 0;
else if (lineWidth == 1) lineWidth = 0;
XSetLineAttributes( gdi_display, physDev->gc, lineWidth,
LineSolid, CapRound, JoinBevel );
XDrawLine( gdi_display, physDev->drawable, physDev->gc,
physDev->org.x + x, physDev->org.y + y + linePos,
physDev->org.x + x + width, physDev->org.y + y + linePos );
}
if (lfStrikeOut)
{
long lineAscent, lineDescent;
if (!XGetFontProperty( font, XA_STRIKEOUT_ASCENT, &lineAscent ))
lineAscent = ascent / 2;
if (!XGetFontProperty( font, XA_STRIKEOUT_DESCENT, &lineDescent ))
lineDescent = -lineAscent * 2 / 3;
XSetLineAttributes( gdi_display, physDev->gc, lineAscent + lineDescent,
LineSolid, CapRound, JoinBevel );
XDrawLine( gdi_display, physDev->drawable, physDev->gc,
physDev->org.x + x, physDev->org.y + y - lineAscent,
physDev->org.x + x + width, physDev->org.y + y - lineAscent );
}
wine_tsx11_unlock();
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_GetTextExtentPoint
*/
BOOL X11DRV_GetTextExtentPoint( X11DRV_PDEVICE *physDev, LPCWSTR str, INT count,
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 );
size->cx = info_width;
size->cy = pfo->fs->ascent + pfo->fs->descent;
} else {
INT i;
float x = 0.0, y = 0.0;
/* 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;
}
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;
}
size->cx *= pfo->rescale;
size->cy *= pfo->rescale;
HeapFree( GetProcessHeap(), 0, p );
return TRUE;
}
return FALSE;
}