dlls/winex11.drv/text.c

   1 /*
   2  * X11 graphics driver text functions
   3  *
   4  * Copyright 1993,1994 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #include <stdlib.h>
  25 #include <math.h>
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "x11font.h"
  30 #include "wine/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(text);
  33
  34 #define IROUND(x) (int)((x)>0? (x)+0.5 : (x) - 0.5)
  35
  36
  37 /***********************************************************************
  38  *           X11DRV_ExtTextOut
  39  */
  40 BOOL X11DRV_ExtTextOut( PHYSDEV dev, INT x, INT y, UINT flags,
  41                         const RECT *lprect, LPCWSTR wstr, UINT count, const INT *lpDx )
  42 {
  43     X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
  44     RGNDATA *saved_region = NULL;
  45     unsigned int i;
  46     fontObject*         pfo = XFONT_GetFontObject( physDev->font );
  47     XFontStruct*        font;
  48     BOOL                rotated = FALSE;
  49     XChar2b             *str2b = NULL;
  50     BOOL                dibUpdateFlag = FALSE;
  51     BOOL                result = TRUE;
  52
  53     if (!pfo)
  54     {
  55         dev = GET_NEXT_PHYSDEV( dev, pExtTextOut );
  56         return dev->funcs->pExtTextOut( dev, x, y, flags, lprect, wstr, count, lpDx );
  57     }
  58
  59     if (!X11DRV_SetupGCForText( physDev )) return TRUE;
  60
  61     font = pfo->fs;
  62
  63     if (pfo->lf.lfEscapement && pfo->lpX11Trans)
  64         rotated = TRUE;
  65
  66     TRACE("hdc=%p df=%04x %d,%d rc %s %s, %d  flags=%d lpDx=%p\n",
  67           dev->hdc, (UINT16)physDev->font, x, y, wine_dbgstr_rect(lprect),
  68           debugstr_wn (wstr, count), count, flags, lpDx);
  69
  70       /* Draw the rectangle */
  71
  72     if (flags & ETO_OPAQUE)
  73     {
  74         X11DRV_LockDIBSection( physDev, DIB_Status_GdiMod );
  75         dibUpdateFlag = TRUE;
  76         wine_tsx11_lock();
  77         XSetForeground( gdi_display, physDev->gc, physDev->backgroundPixel );
  78         XFillRectangle( gdi_display, physDev->drawable, physDev->gc,
  79                         physDev->dc_rect.left + lprect->left, physDev->dc_rect.top + lprect->top,
  80                         lprect->right - lprect->left, lprect->bottom - lprect->top );
  81         wine_tsx11_unlock();
  82     }
  83     if (!count) goto END;  /* Nothing more to do */
  84
  85
  86       /* Set the clip region */
  87
  88     if (flags & ETO_CLIPPED)
  89     {
  90         HRGN clip_region = CreateRectRgnIndirect( lprect );
  91         saved_region = add_extra_clipping_region( physDev, clip_region );
  92         DeleteObject( clip_region );
  93     }
  94
  95       /* Draw the text background if necessary */
  96
  97     if (!dibUpdateFlag)
  98     {
  99         X11DRV_LockDIBSection( physDev, DIB_Status_GdiMod );
 100         dibUpdateFlag = TRUE;
 101     }
 102
 103
 104     /* Draw the text (count > 0 verified) */
 105     if (!(str2b = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, wstr, count )))
 106     {
 107         result = FALSE;
 108         goto END;
 109     }
 110
 111     wine_tsx11_lock();
 112     XSetForeground( gdi_display, physDev->gc, physDev->textPixel );
 113     wine_tsx11_unlock();
 114     if(!rotated)
 115     {
 116         if (!lpDx)
 117         {
 118             X11DRV_cptable[pfo->fi->cptable].pDrawString(
 119                            pfo, gdi_display, physDev->drawable, physDev->gc,
 120                            physDev->dc_rect.left + x, physDev->dc_rect.top + y, str2b, count );
 121         }
 122         else
 123         {
 124             XTextItem16 *items;
 125
 126             items = HeapAlloc( GetProcessHeap(), 0, count * sizeof(XTextItem16) );
 127             if(items == NULL)
 128             {
 129                 result = FALSE;
 130                 goto END;
 131             }
 132             items[0].chars = str2b;
 133             items[0].delta = 0;
 134             items[0].nchars = 1;
 135             items[0].font = None;
 136             for(i = 1; i < count; i++)
 137             {
 138                 items[i].chars  = str2b + i;
 139                 items[i].delta  = (flags & ETO_PDY) ? lpDx[(i - 1) * 2] : lpDx[i - 1];
 140                 items[i].delta -= X11DRV_cptable[pfo->fi->cptable].pTextWidth( pfo, str2b + i - 1, 1 );
 141                 items[i].nchars = 1;
 142                 items[i].font   = None;
 143             }
 144             X11DRV_cptable[pfo->fi->cptable].pDrawText( pfo, gdi_display,
 145                                   physDev->drawable, physDev->gc,
 146                                   physDev->dc_rect.left + x, physDev->dc_rect.top + y, items, count );
 147             HeapFree( GetProcessHeap(), 0, items );
 148         }
 149     }
 150     else /* rotated */
 151     {
 152         /* have to render character by character. */
 153         double offset = 0.0;
 154         UINT i;
 155
 156         for (i=0; i<count; i++)
 157         {
 158             int char_metric_offset = str2b[i].byte2 + (str2b[i].byte1 << 8)
 159                 - font->min_char_or_byte2;
 160             int x_i = IROUND((double) (physDev->dc_rect.left + x) + offset *
 161                              pfo->lpX11Trans->a / pfo->lpX11Trans->pixelsize );
 162             int y_i = IROUND((double) (physDev->dc_rect.top + y) - offset *
 163                              pfo->lpX11Trans->b / pfo->lpX11Trans->pixelsize );
 164
 165             X11DRV_cptable[pfo->fi->cptable].pDrawString(
 166                                     pfo, gdi_display, physDev->drawable, physDev->gc,
 167                                     x_i, y_i, &str2b[i], 1);
 168             if (lpDx)
 169             {
 170                 offset += (flags & ETO_PDY) ? lpDx[i * 2] : lpDx[i];
 171             }
 172             else
 173             {
 174                 offset += (double) (font->per_char ?
 175                                     font->per_char[char_metric_offset].attributes:
 176                                     font->min_bounds.attributes)
 177                     * pfo->lpX11Trans->pixelsize / 1000.0;
 178             }
 179         }
 180     }
 181
 182 END:
 183     HeapFree( GetProcessHeap(), 0, str2b );
 184     if (dibUpdateFlag) X11DRV_UnlockDIBSection( physDev, TRUE );
 185     restore_clipping_region( physDev, saved_region );
 186     return result;
 187 }
 188
 189
 190 /***********************************************************************
 191  *           X11DRV_GetTextExtentExPoint
 192  */
 193 BOOL X11DRV_GetTextExtentExPoint( PHYSDEV dev, LPCWSTR str, INT count,
 194                                   INT maxExt, LPINT lpnFit, LPINT alpDx, LPSIZE size )
 195 {
 196     X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
 197     fontObject* pfo = XFONT_GetFontObject( physDev->font );
 198
 199     TRACE("%s %d\n", debugstr_wn(str,count), count);
 200     if( pfo ) {
 201         XChar2b *p = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, str, count );
 202         if (!p) return FALSE;
 203         if( !pfo->lpX11Trans ) {
 204             int dir, ascent, descent;
 205             int info_width;
 206             X11DRV_cptable[pfo->fi->cptable].pTextExtents( pfo, p,
 207                                 count, &dir, &ascent, &descent, &info_width,
 208                                 maxExt, lpnFit, alpDx );
 209
 210           size->cx = info_width;
 211           size->cy = pfo->fs->ascent + pfo->fs->descent;
 212         } else {
 213             INT i;
 214             INT nfit = 0;
 215             float x = 0.0, y = 0.0;
 216             float scaled_x = 0.0, pixsize = pfo->lpX11Trans->pixelsize;
 217             /* FIXME: Deal with *_char_or_byte2 != 0 situations */
 218             for(i = 0; i < count; i++) {
 219                 x += pfo->fs->per_char ?
 220            pfo->fs->per_char[p[i].byte2 - pfo->fs->min_char_or_byte2].attributes :
 221            pfo->fs->min_bounds.attributes;
 222                 scaled_x = x * pixsize / 1000.0;
 223                 if (alpDx)
 224                     alpDx[i] = scaled_x;
 225                 if (scaled_x <= maxExt)
 226                     ++nfit;
 227             }
 228             y = pfo->lpX11Trans->RAW_ASCENT + pfo->lpX11Trans->RAW_DESCENT;
 229             TRACE("x = %f y = %f\n", x, y);
 230             size->cx = x * pfo->lpX11Trans->pixelsize / 1000.0;
 231             size->cy = y * pfo->lpX11Trans->pixelsize / 1000.0;
 232             if (lpnFit)
 233                 *lpnFit = nfit;
 234         }
 235         size->cx *= pfo->rescale;
 236         size->cy *= pfo->rescale;
 237         HeapFree( GetProcessHeap(), 0, p );
 238         return TRUE;
 239     }
 240
 241     dev = GET_NEXT_PHYSDEV( dev, pGetTextExtentExPoint );
 242     return dev->funcs->pGetTextExtentExPoint( dev, str, count, maxExt, lpnFit, alpDx, size );
 243 }