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     unsigned int i;
  45     fontObject*         pfo;
  46     XFontStruct*        font;
  47     BOOL                rotated = FALSE;
  48     XChar2b             *str2b = NULL;
  49     BOOL                dibUpdateFlag = FALSE;
  50     BOOL                result = TRUE;
  51     HRGN                saved_region = 0;
  52
  53     if(physDev->has_gdi_font)
  54         return X11DRV_XRender_ExtTextOut(physDev, x, y, flags, lprect, wstr, count, lpDx);
  55
  56     if (!X11DRV_SetupGCForText( physDev )) return TRUE;
  57
  58     pfo = XFONT_GetFontObject( physDev->font );
  59     font = pfo->fs;
  60
  61     if (pfo->lf.lfEscapement && pfo->lpX11Trans)
  62         rotated = TRUE;
  63
  64     TRACE("hdc=%p df=%04x %d,%d rc %s %s, %d  flags=%d lpDx=%p\n",
  65           dev->hdc, (UINT16)physDev->font, x, y, wine_dbgstr_rect(lprect),
  66           debugstr_wn (wstr, count), count, flags, lpDx);
  67
  68       /* Draw the rectangle */
  69
  70     if (flags & ETO_OPAQUE)
  71     {
  72         X11DRV_LockDIBSection( physDev, DIB_Status_GdiMod );
  73         dibUpdateFlag = TRUE;
  74         wine_tsx11_lock();
  75         XSetForeground( gdi_display, physDev->gc, physDev->backgroundPixel );
  76         XFillRectangle( gdi_display, physDev->drawable, physDev->gc,
  77                         physDev->dc_rect.left + lprect->left, physDev->dc_rect.top + lprect->top,
  78                         lprect->right - lprect->left, lprect->bottom - lprect->top );
  79         wine_tsx11_unlock();
  80     }
  81     if (!count) goto END;  /* Nothing more to do */
  82
  83
  84       /* Set the clip region */
  85
  86     if (flags & ETO_CLIPPED)
  87     {
  88         HRGN clip_region = CreateRectRgnIndirect( lprect );
  89         saved_region = add_extra_clipping_region( physDev, clip_region );
  90         DeleteObject( clip_region );
  91     }
  92
  93       /* Draw the text background if necessary */
  94
  95     if (!dibUpdateFlag)
  96     {
  97         X11DRV_LockDIBSection( physDev, DIB_Status_GdiMod );
  98         dibUpdateFlag = TRUE;
  99     }
 100
 101
 102     /* Draw the text (count > 0 verified) */
 103     if (!(str2b = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, wstr, count )))
 104         goto FAIL;
 105
 106     wine_tsx11_lock();
 107     XSetForeground( gdi_display, physDev->gc, physDev->textPixel );
 108     wine_tsx11_unlock();
 109     if(!rotated)
 110     {
 111         if (!lpDx)
 112         {
 113             X11DRV_cptable[pfo->fi->cptable].pDrawString(
 114                            pfo, gdi_display, physDev->drawable, physDev->gc,
 115                            physDev->dc_rect.left + x, physDev->dc_rect.top + y, str2b, count );
 116         }
 117         else
 118         {
 119             XTextItem16 *items;
 120
 121             items = HeapAlloc( GetProcessHeap(), 0, count * sizeof(XTextItem16) );
 122             if(items == NULL) goto FAIL;
 123
 124             items[0].chars = str2b;
 125             items[0].delta = 0;
 126             items[0].nchars = 1;
 127             items[0].font = None;
 128             for(i = 1; i < count; i++)
 129             {
 130                 items[i].chars  = str2b + i;
 131                 items[i].delta  = (flags & ETO_PDY) ? lpDx[(i - 1) * 2] : lpDx[i - 1];
 132                 items[i].delta -= X11DRV_cptable[pfo->fi->cptable].pTextWidth( pfo, str2b + i - 1, 1 );
 133                 items[i].nchars = 1;
 134                 items[i].font   = None;
 135             }
 136             X11DRV_cptable[pfo->fi->cptable].pDrawText( pfo, gdi_display,
 137                                   physDev->drawable, physDev->gc,
 138                                   physDev->dc_rect.left + x, physDev->dc_rect.top + y, items, count );
 139             HeapFree( GetProcessHeap(), 0, items );
 140         }
 141     }
 142     else /* rotated */
 143     {
 144         /* have to render character by character. */
 145         double offset = 0.0;
 146         UINT i;
 147
 148         for (i=0; i<count; i++)
 149         {
 150             int char_metric_offset = str2b[i].byte2 + (str2b[i].byte1 << 8)
 151                 - font->min_char_or_byte2;
 152             int x_i = IROUND((double) (physDev->dc_rect.left + x) + offset *
 153                              pfo->lpX11Trans->a / pfo->lpX11Trans->pixelsize );
 154             int y_i = IROUND((double) (physDev->dc_rect.top + y) - offset *
 155                              pfo->lpX11Trans->b / pfo->lpX11Trans->pixelsize );
 156
 157             X11DRV_cptable[pfo->fi->cptable].pDrawString(
 158                                     pfo, gdi_display, physDev->drawable, physDev->gc,
 159                                     x_i, y_i, &str2b[i], 1);
 160             if (lpDx)
 161             {
 162                 offset += (flags & ETO_PDY) ? lpDx[i * 2] : lpDx[i];
 163             }
 164             else
 165             {
 166                 offset += (double) (font->per_char ?
 167                                     font->per_char[char_metric_offset].attributes:
 168                                     font->min_bounds.attributes)
 169                     * pfo->lpX11Trans->pixelsize / 1000.0;
 170             }
 171         }
 172     }
 173     HeapFree( GetProcessHeap(), 0, str2b );
 174
 175     if (saved_region) restore_clipping_region( physDev, saved_region );
 176     goto END;
 177
 178 FAIL:
 179     HeapFree( GetProcessHeap(), 0, str2b );
 180     result = FALSE;
 181
 182 END:
 183     if (dibUpdateFlag) X11DRV_UnlockDIBSection( physDev, TRUE );
 184     return result;
 185 }
 186
 187
 188 /***********************************************************************
 189  *           X11DRV_GetTextExtentExPoint
 190  */
 191 BOOL X11DRV_GetTextExtentExPoint( PHYSDEV dev, LPCWSTR str, INT count,
 192                                   INT maxExt, LPINT lpnFit, LPINT alpDx, LPSIZE size )
 193 {
 194     X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
 195     fontObject* pfo = XFONT_GetFontObject( physDev->font );
 196
 197     TRACE("%s %d\n", debugstr_wn(str,count), count);
 198     if( pfo ) {
 199         XChar2b *p = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, str, count );
 200         if (!p) return FALSE;
 201         if( !pfo->lpX11Trans ) {
 202             int dir, ascent, descent;
 203             int info_width;
 204             X11DRV_cptable[pfo->fi->cptable].pTextExtents( pfo, p,
 205                                 count, &dir, &ascent, &descent, &info_width,
 206                                 maxExt, lpnFit, alpDx );
 207
 208           size->cx = info_width;
 209           size->cy = pfo->fs->ascent + pfo->fs->descent;
 210         } else {
 211             INT i;
 212             INT nfit = 0;
 213             float x = 0.0, y = 0.0;
 214             float scaled_x = 0.0, pixsize = pfo->lpX11Trans->pixelsize;
 215             /* FIXME: Deal with *_char_or_byte2 != 0 situations */
 216             for(i = 0; i < count; i++) {
 217                 x += pfo->fs->per_char ?
 218            pfo->fs->per_char[p[i].byte2 - pfo->fs->min_char_or_byte2].attributes :
 219            pfo->fs->min_bounds.attributes;
 220                 scaled_x = x * pixsize / 1000.0;
 221                 if (alpDx)
 222                     alpDx[i] = scaled_x;
 223                 if (scaled_x <= maxExt)
 224                     ++nfit;
 225             }
 226             y = pfo->lpX11Trans->RAW_ASCENT + pfo->lpX11Trans->RAW_DESCENT;
 227             TRACE("x = %f y = %f\n", x, y);
 228             size->cx = x * pfo->lpX11Trans->pixelsize / 1000.0;
 229             size->cy = y * pfo->lpX11Trans->pixelsize / 1000.0;
 230             if (lpnFit)
 231                 *lpnFit = nfit;
 232         }
 233         size->cx *= pfo->rescale;
 234         size->cy *= pfo->rescale;
 235         HeapFree( GetProcessHeap(), 0, p );
 236         return TRUE;
 237     }
 238     return FALSE;
 239 }