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
  41 X11DRV_ExtTextOut( X11DRV_PDEVICE *physDev, INT x, INT y, UINT flags,
  42                    const RECT *lprect, LPCWSTR wstr, UINT count,
  43                    const INT *lpDx )
  44 {
  45     unsigned int i;
  46     fontObject*         pfo;
  47     XFontStruct*        font;
  48     BOOL                rotated = FALSE;
  49     XChar2b             *str2b = NULL;
  50     BOOL                dibUpdateFlag = FALSE;
  51     BOOL                result = TRUE;
  52     HRGN                saved_region = 0;
  53
  54     if(physDev->has_gdi_font)
  55         return X11DRV_XRender_ExtTextOut(physDev, x, y, flags, lprect, wstr, count, lpDx);
  56
  57     if (!X11DRV_SetupGCForText( physDev )) return TRUE;
  58
  59     pfo = XFONT_GetFontObject( physDev->font );
  60     font = pfo->fs;
  61
  62     if (pfo->lf.lfEscapement && pfo->lpX11Trans)
  63         rotated = TRUE;
  64
  65     TRACE("hdc=%p df=%04x %d,%d %s, %d  flags=%d lpDx=%p\n",
  66           physDev->hdc, (UINT16)(physDev->font), x, y,
  67           debugstr_wn (wstr, count), count, flags, lpDx);
  68
  69     if (lprect != NULL) TRACE("\trect=(%d,%d - %d,%d)\n",
  70                                      lprect->left, lprect->top,
  71                                      lprect->right, lprect->bottom );
  72
  73       /* Draw the rectangle */
  74
  75     if (flags & ETO_OPAQUE)
  76     {
  77         X11DRV_LockDIBSection( physDev, DIB_Status_GdiMod );
  78         dibUpdateFlag = TRUE;
  79         wine_tsx11_lock();
  80         XSetForeground( gdi_display, physDev->gc, physDev->backgroundPixel );
  81         XFillRectangle( gdi_display, physDev->drawable, physDev->gc,
  82                         physDev->dc_rect.left + lprect->left, physDev->dc_rect.top + lprect->top,
  83                         lprect->right - lprect->left, lprect->bottom - lprect->top );
  84         wine_tsx11_unlock();
  85     }
  86     if (!count) goto END;  /* Nothing more to do */
  87
  88
  89       /* Set the clip region */
  90
  91     if (flags & ETO_CLIPPED)
  92     {
  93         HRGN clip_region;
  94
  95         clip_region = CreateRectRgnIndirect( lprect );
  96         /* make a copy of the current device region */
  97         saved_region = CreateRectRgn( 0, 0, 0, 0 );
  98         CombineRgn( saved_region, physDev->region, 0, RGN_COPY );
  99         X11DRV_SetDeviceClipping( physDev, saved_region, clip_region );
 100         DeleteObject( clip_region );
 101     }
 102
 103       /* Draw the text background if necessary */
 104
 105     if (!dibUpdateFlag)
 106     {
 107         X11DRV_LockDIBSection( physDev, DIB_Status_GdiMod );
 108         dibUpdateFlag = TRUE;
 109     }
 110
 111
 112     /* Draw the text (count > 0 verified) */
 113     if (!(str2b = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, wstr, count )))
 114         goto FAIL;
 115
 116     wine_tsx11_lock();
 117     XSetForeground( gdi_display, physDev->gc, physDev->textPixel );
 118     wine_tsx11_unlock();
 119     if(!rotated)
 120     {
 121         if (!lpDx)
 122         {
 123             X11DRV_cptable[pfo->fi->cptable].pDrawString(
 124                            pfo, gdi_display, physDev->drawable, physDev->gc,
 125                            physDev->dc_rect.left + x, physDev->dc_rect.top + y, str2b, count );
 126         }
 127         else
 128         {
 129             XTextItem16 *items, *pitem;
 130
 131             pitem = items = HeapAlloc( GetProcessHeap(), 0,
 132                                        count * sizeof(XTextItem16) );
 133             if(items == NULL) goto FAIL;
 134
 135             for(i = 0; i < count; i++)
 136             {
 137                 pitem->chars  = str2b + i;
 138                 pitem->delta  = lpDx[i];
 139                 pitem->nchars = 1;
 140                 pitem->font   = None;
 141                 pitem++;
 142             }
 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, pitem - items );
 147             HeapFree( GetProcessHeap(), 0, items );
 148         }
 149     }
 150     else /* rotated */
 151     {
 152         /* have to render character by character. */
 153         double offset = 0.0;
 154         int 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 += 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     HeapFree( GetProcessHeap(), 0, str2b );
 182
 183     if (flags & ETO_CLIPPED)
 184     {
 185         /* restore the device region */
 186         X11DRV_SetDeviceClipping( physDev, saved_region, 0 );
 187         DeleteObject( saved_region );
 188     }
 189     goto END;
 190
 191 FAIL:
 192     HeapFree( GetProcessHeap(), 0, str2b );
 193     result = FALSE;
 194
 195 END:
 196     if (dibUpdateFlag) X11DRV_UnlockDIBSection( physDev, TRUE );
 197     return result;
 198 }
 199
 200
 201 /***********************************************************************
 202  *           X11DRV_GetTextExtentExPoint
 203  */
 204 BOOL X11DRV_GetTextExtentExPoint( X11DRV_PDEVICE *physDev, LPCWSTR str, INT count,
 205                                   INT maxExt, LPINT lpnFit, LPINT alpDx, LPSIZE size )
 206 {
 207     fontObject* pfo = XFONT_GetFontObject( physDev->font );
 208
 209     TRACE("%s %d\n", debugstr_wn(str,count), count);
 210     if( pfo ) {
 211         XChar2b *p = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, str, count );
 212         if (!p) return FALSE;
 213         if( !pfo->lpX11Trans ) {
 214             int dir, ascent, descent;
 215             int info_width;
 216             X11DRV_cptable[pfo->fi->cptable].pTextExtents( pfo, p,
 217                                 count, &dir, &ascent, &descent, &info_width,
 218                                 maxExt, lpnFit, alpDx );
 219
 220           size->cx = info_width;
 221           size->cy = pfo->fs->ascent + pfo->fs->descent;
 222         } else {
 223             INT i;
 224             INT nfit = 0;
 225             float x = 0.0, y = 0.0;
 226             float scaled_x = 0.0, pixsize = pfo->lpX11Trans->pixelsize;
 227             /* FIXME: Deal with *_char_or_byte2 != 0 situations */
 228             for(i = 0; i < count; i++) {
 229                 x += pfo->fs->per_char ?
 230            pfo->fs->per_char[p[i].byte2 - pfo->fs->min_char_or_byte2].attributes :
 231            pfo->fs->min_bounds.attributes;
 232                 scaled_x = x * pixsize / 1000.0;
 233                 if (alpDx)
 234                     alpDx[i] = scaled_x;
 235                 if (scaled_x <= maxExt)
 236                     ++nfit;
 237             }
 238             y = pfo->lpX11Trans->RAW_ASCENT + pfo->lpX11Trans->RAW_DESCENT;
 239             TRACE("x = %f y = %f\n", x, y);
 240             size->cx = x * pfo->lpX11Trans->pixelsize / 1000.0;
 241             size->cy = y * pfo->lpX11Trans->pixelsize / 1000.0;
 242             if (lpnFit)
 243                 *lpnFit = nfit;
 244         }
 245         size->cx *= pfo->rescale;
 246         size->cy *= pfo->rescale;
 247         HeapFree( GetProcessHeap(), 0, p );
 248         return TRUE;
 249     }
 250     return FALSE;
 251 }