dlls/wineps.drv/text.c

   1 /*
   2  *      PostScript driver text functions
   3  *
   4  *      Copyright 1998  Huw D M Davies
   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 #include <string.h>
  21 #include <stdarg.h>
  22 #include <stdlib.h>
  23 #include <math.h>
  24
  25 #include "windef.h"
  26 #include "wingdi.h"
  27 #include "psdrv.h"
  28 #include "wine/debug.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  31
  32 typedef struct tagRun {
  33     INT start;
  34     BOOL vertical;
  35     INT x;
  36     INT y;
  37 }Run;
  38
  39 static BOOL PSDRV_Text(PHYSDEV dev, INT x, INT y, UINT flags,
  40                        LPCWSTR str, UINT count,
  41                        BOOL bDrawBackground, const INT *lpDx);
  42
  43 extern const unsigned short vertical_orientation_table[] DECLSPEC_HIDDEN;
  44
  45 static BOOL check_unicode_tategaki(WCHAR uchar)
  46 {
  47     unsigned short orientation = vertical_orientation_table[vertical_orientation_table[vertical_orientation_table[uchar >> 8]+((uchar >> 4) & 0x0f)]+ (uchar & 0xf)];
  48
  49     /* Type: U or Type: Tu */
  50     /* TODO Type: Tr,  Normally the logic for Tr would be that if
  51        Typographical substitution occurs, then do not rotate. However
  52        we have no facility at present to determine if GetGlyphIndices is
  53        successfully performing substitutions (well formed font) or not.
  54        Thus we are erroring on the side of the font being well formed,
  55        doing typographical substitution,  and so we are not doing rotation */
  56     return (orientation ==  1 || orientation == 2 || orientation == 3);
  57 }
  58
  59 static Run* build_vertical_runs(PHYSDEV dev, UINT flags, LPCWSTR str, UINT count, INT *run_count)
  60 {
  61     BOOL last_vert;
  62     INT start, end;
  63     INT array_size = 5;
  64     Run *run = HeapAlloc(GetProcessHeap(),0,sizeof(Run)*array_size);
  65     int index = 0;
  66     LOGFONTW lf;
  67
  68     if (count && str && (!(flags & ETO_GLYPH_INDEX)) && GetObjectW( GetCurrentObject(dev->hdc, OBJ_FONT), sizeof(lf), &lf ) && (lf.lfFaceName[0] == '@'))
  69     {
  70         last_vert = check_unicode_tategaki(str[0]);
  71         start = end = 0;
  72         while (start < count)
  73         {
  74             int offset = 0;
  75
  76             while (end < count && check_unicode_tategaki(str[end]) == last_vert)
  77                 end++;
  78
  79             run[index].start = start;
  80             run[index].vertical = last_vert;
  81             run[index].x = 0;
  82             run[index].y = 0;
  83
  84             if (run[index].vertical)
  85             {
  86                 TEXTMETRICW tm;
  87                 GetTextMetricsW(dev->hdc, &tm);
  88                 offset += PSDRV_XWStoDS(dev, tm.tmAscent - tm.tmInternalLeading);
  89             }
  90
  91             if (start > 0)
  92             {
  93                 SIZE size;
  94                 GetTextExtentPointW(dev->hdc, str, start, &size);
  95                 offset += PSDRV_XWStoDS(dev, size.cx);
  96             }
  97
  98             if (offset)
  99             {
 100                 double angle;
 101                 angle = (lf.lfEscapement / 10.0) * M_PI / 180.0;
 102                 run[index].y = -offset * sin(angle);
 103                 run[index].x = -offset * cos(angle);
 104             }
 105
 106             index ++;
 107             if (index >= array_size)
 108             {
 109                 array_size *=2;
 110                 run = HeapReAlloc(GetProcessHeap(), 0, run, sizeof(Run)*array_size);
 111             }
 112             start = end;
 113             if (start < count)
 114                 last_vert = check_unicode_tategaki(str[end]);
 115         }
 116     }
 117     else
 118     {
 119         run[0].start = 0;
 120         run[0].vertical = 0;
 121         run[0].x = 0;
 122         run[0].y = 0;
 123         index = 1;
 124     }
 125     *run_count = index;
 126     return run;
 127 }
 128
 129 /***********************************************************************
 130  *           PSDRV_ExtTextOut
 131  */
 132 BOOL PSDRV_ExtTextOut( PHYSDEV dev, INT x, INT y, UINT flags, const RECT *lprect, LPCWSTR str, UINT count,
 133                        const INT *lpDx )
 134 {
 135     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 136     BOOL bResult = TRUE;
 137     BOOL bClipped = FALSE;
 138     BOOL bOpaque = FALSE;
 139     Run *runs = NULL;
 140     int run_count = 0;
 141     int i = 0;
 142
 143     TRACE("(x=%d, y=%d, flags=0x%08x, str=%s, count=%d, lpDx=%p)\n", x, y,
 144           flags, debugstr_wn(str, count), count, lpDx);
 145
 146     if(physDev->job.id == 0) return FALSE;
 147
 148     runs = build_vertical_runs(dev, flags, str, count, &run_count);
 149
 150     /* set draw background */
 151     if ((flags & ETO_OPAQUE) && (lprect != NULL))
 152     {
 153         PSDRV_SetClip(dev);
 154         PSDRV_WriteGSave(dev);
 155         PSDRV_WriteRectangle(dev, lprect->left, lprect->top, lprect->right - lprect->left,
 156                      lprect->bottom - lprect->top);
 157
 158         bOpaque = TRUE;
 159         PSDRV_WriteSetColor(dev, &physDev->bkColor);
 160         PSDRV_WriteFill(dev);
 161
 162         PSDRV_WriteGRestore(dev);
 163         PSDRV_ResetClip(dev);
 164     }
 165
 166     while (i < run_count)
 167     {
 168         int cnt;
 169
 170         if (i != run_count - 1)
 171             cnt = runs[i+1].start- runs[i].start;
 172         else
 173             cnt = count - runs[i].start;
 174
 175         PSDRV_SetFont(dev, runs[i].vertical);
 176
 177         PSDRV_SetClip(dev);
 178
 179         /* set clipping */
 180         if ((flags & ETO_CLIPPED) && (lprect != NULL))
 181         {
 182             PSDRV_WriteGSave(dev);
 183
 184             PSDRV_WriteRectangle(dev, lprect->left, lprect->top, lprect->right - lprect->left,
 185                      lprect->bottom - lprect->top);
 186
 187             bClipped = TRUE;
 188             PSDRV_WriteClip(dev);
 189
 190             bResult = PSDRV_Text(dev, runs[i].x+x, runs[i].y+y, flags, &str[runs[i].start], cnt, !(bClipped && bOpaque), (lpDx)?&lpDx[runs[i].start]:NULL);
 191
 192             PSDRV_WriteGRestore(dev);
 193         }
 194         else
 195             bResult = PSDRV_Text(dev, runs[i].x+x, runs[i].y+y, flags, &str[runs[i].start], cnt, TRUE, (lpDx)?&lpDx[runs[i].start]:NULL);
 196
 197         i++;
 198         PSDRV_ResetClip(dev);
 199     }
 200
 201     HeapFree(GetProcessHeap(),0,runs);
 202     return bResult;
 203 }
 204
 205 /***********************************************************************
 206  *           PSDRV_Text
 207  */
 208 static BOOL PSDRV_Text(PHYSDEV dev, INT x, INT y, UINT flags, LPCWSTR str,
 209                        UINT count, BOOL bDrawBackground, const INT *lpDx)
 210 {
 211     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 212     WORD *glyphs = NULL;
 213
 214     if (!count)
 215         return TRUE;
 216
 217     if(physDev->font.fontloc == Download && !(flags & ETO_GLYPH_INDEX))
 218     {
 219         glyphs = HeapAlloc( GetProcessHeap(), 0, count * sizeof(WORD) );
 220         GetGlyphIndicesW( dev->hdc, str, count, glyphs, 0 );
 221         str = glyphs;
 222     }
 223
 224     PSDRV_WriteMoveTo(dev, x, y);
 225
 226     if(!lpDx) {
 227         if(physDev->font.fontloc == Download)
 228             PSDRV_WriteDownloadGlyphShow(dev, str, count);
 229         else
 230             PSDRV_WriteBuiltinGlyphShow(dev, str, count);
 231     }
 232     else {
 233         UINT i;
 234         POINT offset = {0, 0};
 235
 236         for(i = 0; i < count-1; i++) {
 237             if(physDev->font.fontloc == Download)
 238                 PSDRV_WriteDownloadGlyphShow(dev, str + i, 1);
 239             else
 240                 PSDRV_WriteBuiltinGlyphShow(dev, str + i, 1);
 241             if(flags & ETO_PDY)
 242             {
 243                 offset.x += lpDx[i * 2];
 244                 offset.y += lpDx[i * 2 + 1];
 245             }
 246             else
 247                 offset.x += lpDx[i];
 248             PSDRV_WriteMoveTo(dev, x + offset.x, y + offset.y);
 249         }
 250         if(physDev->font.fontloc == Download)
 251             PSDRV_WriteDownloadGlyphShow(dev, str + i, 1);
 252         else
 253             PSDRV_WriteBuiltinGlyphShow(dev, str + i, 1);
 254     }
 255
 256     HeapFree( GetProcessHeap(), 0, glyphs );
 257     return TRUE;
 258 }