dlls/wineps/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #include <string.h>
  21 #include "gdi.h"
  22 #include "psdrv.h"
  23 #include "wine/debug.h"
  24 #include "winspool.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  27
  28 static BOOL PSDRV_Text(PSDRV_PDEVICE *physDev, INT x, INT y, UINT flags,
  29                        LPCWSTR str, UINT count,
  30                        BOOL bDrawBackground, const INT *lpDx);
  31
  32 /***********************************************************************
  33  *           PSDRV_ExtTextOut
  34  */
  35 BOOL PSDRV_ExtTextOut( PSDRV_PDEVICE *physDev, INT x, INT y, UINT flags,
  36                        const RECT *lprect, LPCWSTR str, UINT count,
  37                        const INT *lpDx )
  38 {
  39     BOOL bResult = TRUE;
  40     BOOL bClipped = FALSE;
  41     BOOL bOpaque = FALSE;
  42     RECT rect;
  43
  44     TRACE("(x=%d, y=%d, flags=0x%08x, str=%s, count=%d, lpDx=%p)\n", x, y,
  45           flags, debugstr_wn(str, count), count, lpDx);
  46
  47     /* write font if not already written */
  48     PSDRV_SetFont(physDev);
  49
  50     /* set clipping and/or draw background */
  51     if ((flags & (ETO_CLIPPED | ETO_OPAQUE)) && (lprect != NULL))
  52     {
  53         rect = *lprect;
  54         LPtoDP( physDev->hdc, (POINT *)&rect, 2 );
  55         PSDRV_WriteGSave(physDev);
  56         PSDRV_WriteRectangle(physDev, rect.left, rect.top, rect.right - rect.left,
  57                              rect.bottom - rect.top);
  58
  59         if (flags & ETO_OPAQUE)
  60         {
  61             bOpaque = TRUE;
  62             PSDRV_WriteGSave(physDev);
  63             PSDRV_WriteSetColor(physDev, &physDev->bkColor);
  64             PSDRV_WriteFill(physDev);
  65             PSDRV_WriteGRestore(physDev);
  66         }
  67
  68         if (flags & ETO_CLIPPED)
  69         {
  70             bClipped = TRUE;
  71             PSDRV_WriteClip(physDev);
  72         }
  73
  74         bResult = PSDRV_Text(physDev, x, y, flags, str, count, !(bClipped && bOpaque), lpDx);
  75         PSDRV_WriteGRestore(physDev);
  76     }
  77     else
  78     {
  79         bResult = PSDRV_Text(physDev, x, y, flags, str, count, TRUE, lpDx);
  80     }
  81
  82     return bResult;
  83 }
  84
  85 /***********************************************************************
  86  *           PSDRV_Text
  87  */
  88 static BOOL PSDRV_Text(PSDRV_PDEVICE *physDev, INT x, INT y, UINT flags, LPCWSTR str,
  89                        UINT count, BOOL bDrawBackground, const INT *lpDx)
  90 {
  91     SIZE sz;
  92     TEXTMETRICW tm;
  93     POINT pt;
  94     INT ascent, descent;
  95     WORD *glyphs = NULL;
  96     DC *dc = physDev->dc;
  97     UINT align = GetTextAlign( physDev->hdc );
  98
  99     if (!count)
 100         return TRUE;
 101
 102
 103     if(physDev->font.fontloc == Download) {
 104         if(flags & ETO_GLYPH_INDEX)
 105             glyphs = (LPWORD)str;
 106         else {
 107             glyphs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WORD));
 108             GetGlyphIndicesW(physDev->hdc, str, count, glyphs, 0);
 109         }
 110     }
 111
 112     if(align & TA_UPDATECP) {
 113         x = dc->CursPosX;
 114         y = dc->CursPosY;
 115     }
 116
 117     pt.x = x;
 118     pt.y = y;
 119     LPtoDP(physDev->hdc, &pt, 1);
 120     x = pt.x;
 121     y = pt.y;
 122
 123     if(physDev->font.fontloc == Download)
 124         GetTextExtentPointI(physDev->hdc, glyphs, count, &sz);
 125     else
 126         GetTextExtentPoint32W(physDev->hdc, str, count, &sz);
 127
 128     if(lpDx) {
 129         SIZE tmpsz;
 130         INT i;
 131         /* Get the width of the last char and add on all the offsets */
 132         if(physDev->font.fontloc == Download)
 133             GetTextExtentPointI(physDev->hdc, glyphs + count - 1, 1, &tmpsz);
 134         else
 135             GetTextExtentPoint32W(physDev->hdc, str + count - 1, 1, &tmpsz);
 136         for(i = 0; i < count-1; i++)
 137             tmpsz.cx += lpDx[i];
 138         sz.cx = tmpsz.cx; /* sz.cy remains untouched */
 139     }
 140
 141     sz.cx = INTERNAL_XWSTODS(dc, sz.cx);
 142     sz.cy = INTERNAL_YWSTODS(dc, sz.cy);
 143
 144     GetTextMetricsW(physDev->hdc, &tm);
 145     ascent = INTERNAL_YWSTODS(dc, tm.tmAscent);
 146     descent = INTERNAL_YWSTODS(dc, tm.tmDescent);
 147
 148     TRACE("textAlign = %x\n", align);
 149     switch(align & (TA_LEFT | TA_CENTER | TA_RIGHT) ) {
 150     case TA_LEFT:
 151         if(align & TA_UPDATECP)
 152         {
 153             POINT pt;
 154             pt.x = x + sz.cx;
 155             pt.y = y;
 156             DPtoLP( physDev->hdc, &pt, 1 );
 157             dc->CursPosX = pt.x;
 158         }
 159         break;
 160
 161     case TA_CENTER:
 162         x -= sz.cx/2;
 163         break;
 164
 165     case TA_RIGHT:
 166         x -= sz.cx;
 167         if(align & TA_UPDATECP)
 168         {
 169             POINT pt;
 170             pt.x = x;
 171             pt.y = y;
 172             DPtoLP( physDev->hdc, &pt, 1 );
 173             dc->CursPosX = pt.x;
 174         }
 175         break;
 176     }
 177
 178     switch(align & (TA_TOP | TA_BASELINE | TA_BOTTOM) ) {
 179     case TA_TOP:
 180         y += ascent;
 181         break;
 182
 183     case TA_BASELINE:
 184         break;
 185
 186     case TA_BOTTOM:
 187         y -= descent;
 188         break;
 189     }
 190
 191     if ((GetBkMode( physDev->hdc ) != TRANSPARENT) && bDrawBackground)
 192     {
 193         PSDRV_WriteGSave(physDev);
 194         PSDRV_WriteNewPath(physDev);
 195         PSDRV_WriteRectangle(physDev, x, y - ascent, sz.cx,
 196                              ascent + descent);
 197         PSDRV_WriteSetColor(physDev, &physDev->bkColor);
 198         PSDRV_WriteFill(physDev);
 199         PSDRV_WriteGRestore(physDev);
 200     }
 201
 202     PSDRV_WriteMoveTo(physDev, x, y);
 203
 204     if(!lpDx) {
 205         if(physDev->font.fontloc == Download)
 206             PSDRV_WriteDownloadGlyphShow(physDev, glyphs, count);
 207         else
 208             PSDRV_WriteBuiltinGlyphShow(physDev, str, count);
 209     }
 210     else {
 211         INT i;
 212         float dx = 0.0, dy = 0.0;
 213         float cos_theta = cos(physDev->font.escapement * M_PI / 1800.0);
 214         float sin_theta = sin(physDev->font.escapement * M_PI / 1800.0);
 215         for(i = 0; i < count-1; i++) {
 216             TRACE("lpDx[%d] = %d\n", i, lpDx[i]);
 217             if(physDev->font.fontloc == Download)
 218                 PSDRV_WriteDownloadGlyphShow(physDev, glyphs + i, 1);
 219             else
 220                 PSDRV_WriteBuiltinGlyphShow(physDev, str + i, 1);
 221             dx += lpDx[i] * cos_theta;
 222             dy -= lpDx[i] * sin_theta;
 223             PSDRV_WriteMoveTo(physDev, x + INTERNAL_XWSTODS(dc, dx),
 224                               y + INTERNAL_YWSTODS(dc, dy));
 225         }
 226         if(physDev->font.fontloc == Download)
 227             PSDRV_WriteDownloadGlyphShow(physDev, glyphs + i, 1);
 228         else
 229             PSDRV_WriteBuiltinGlyphShow(physDev, str + i, 1);
 230     }
 231
 232     /*
 233      * Underline and strikeout attributes.
 234      */
 235     if ((tm.tmUnderlined) || (tm.tmStruckOut)) {
 236
 237         /* Get the thickness and the position for the underline attribute */
 238         /* We'll use the same thickness for the strikeout attribute       */
 239
 240         INT escapement =  physDev->font.escapement;
 241
 242         /* Do the underline */
 243
 244         if (tm.tmUnderlined) {
 245             PSDRV_WriteNewPath(physDev); /* will be closed by WriteRectangle */
 246             if (escapement != 0)  /* rotated text */
 247             {
 248                 PSDRV_WriteGSave(physDev);  /* save the graphics state */
 249                 PSDRV_WriteMoveTo(physDev, x, y); /* move to the start */
 250
 251                 /* temporarily rotate the coord system */
 252                 PSDRV_WriteRotate(physDev, -escapement/10);
 253
 254                 /* draw the underline relative to the starting point */
 255                 PSDRV_WriteRRectangle(physDev, 0, -physDev->font.underlinePosition,
 256                                       sz.cx, physDev->font.underlineThickness);
 257             }
 258             else
 259                 PSDRV_WriteRectangle(physDev, x, y - physDev->font.underlinePosition,
 260                                      sz.cx, physDev->font.underlineThickness);
 261
 262             PSDRV_WriteFill(physDev);
 263
 264             if (escapement != 0)  /* rotated text */
 265                 PSDRV_WriteGRestore(physDev);  /* restore the graphics state */
 266         }
 267
 268         /* Do the strikeout */
 269
 270         if (tm.tmStruckOut) {
 271             PSDRV_WriteNewPath(physDev); /* will be closed by WriteRectangle */
 272             if (escapement != 0)  /* rotated text */
 273             {
 274                 PSDRV_WriteGSave(physDev);  /* save the graphics state */
 275                 PSDRV_WriteMoveTo(physDev, x, y); /* move to the start */
 276
 277                 /* temporarily rotate the coord system */
 278                 PSDRV_WriteRotate(physDev, -escapement/10);
 279
 280                 /* draw the line relative to the starting point */
 281                 PSDRV_WriteRRectangle(physDev, 0, -physDev->font.strikeoutPosition,
 282                                       sz.cx, physDev->font.strikeoutThickness);
 283             }
 284             else
 285                 PSDRV_WriteRectangle(physDev, x, y - physDev->font.strikeoutPosition,
 286                                      sz.cx, physDev->font.strikeoutThickness);
 287
 288             PSDRV_WriteFill(physDev);
 289
 290             if (escapement != 0)  /* rotated text */
 291                 PSDRV_WriteGRestore(physDev);  /* restore the graphics state */
 292         }
 293     }
 294
 295     if(glyphs && glyphs != str) HeapFree(GetProcessHeap(), 0, glyphs);
 296     return TRUE;
 297 }