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     PSDRV_SetClip(physDev);
  51
  52     /* set clipping and/or draw background */
  53     if ((flags & (ETO_CLIPPED | ETO_OPAQUE)) && (lprect != NULL))
  54     {
  55         rect = *lprect;
  56         LPtoDP( physDev->hdc, (POINT *)&rect, 2 );
  57         PSDRV_WriteGSave(physDev);
  58         PSDRV_WriteRectangle(physDev, rect.left, rect.top, rect.right - rect.left,
  59                              rect.bottom - rect.top);
  60
  61         if (flags & ETO_OPAQUE)
  62         {
  63             bOpaque = TRUE;
  64             PSDRV_WriteGSave(physDev);
  65             PSDRV_WriteSetColor(physDev, &physDev->bkColor);
  66             PSDRV_WriteFill(physDev);
  67             PSDRV_WriteGRestore(physDev);
  68         }
  69
  70         if (flags & ETO_CLIPPED)
  71         {
  72             bClipped = TRUE;
  73             PSDRV_WriteClip(physDev);
  74         }
  75
  76         bResult = PSDRV_Text(physDev, x, y, flags, str, count, !(bClipped && bOpaque), lpDx);
  77         PSDRV_WriteGRestore(physDev);
  78     }
  79     else
  80     {
  81         bResult = PSDRV_Text(physDev, x, y, flags, str, count, TRUE, lpDx);
  82     }
  83
  84     PSDRV_ResetClip(physDev);
  85     return bResult;
  86 }
  87
  88 /***********************************************************************
  89  *           PSDRV_Text
  90  */
  91 static BOOL PSDRV_Text(PSDRV_PDEVICE *physDev, INT x, INT y, UINT flags, LPCWSTR str,
  92                        UINT count, BOOL bDrawBackground, const INT *lpDx)
  93 {
  94     SIZE sz;
  95     TEXTMETRICW tm;
  96     POINT pt;
  97     INT ascent, descent;
  98     WORD *glyphs = NULL;
  99     DC *dc = physDev->dc;
 100     UINT align = GetTextAlign( physDev->hdc );
 101     INT char_extra;
 102     INT *deltas = NULL;
 103     double cosEsc, sinEsc;
 104     LOGFONTW lf;
 105
 106     if (!count)
 107         return TRUE;
 108
 109     GetObjectW(GetCurrentObject(physDev->hdc, OBJ_FONT), sizeof(lf), &lf);
 110     if(lf.lfEscapement != 0) {
 111         cosEsc = cos(lf.lfEscapement * M_PI / 1800);
 112         sinEsc = sin(lf.lfEscapement * M_PI / 1800);
 113     } else {
 114         cosEsc = 1;
 115         sinEsc = 0;
 116     }
 117
 118     if(physDev->font.fontloc == Download) {
 119         if(flags & ETO_GLYPH_INDEX)
 120             glyphs = (LPWORD)str;
 121         else {
 122             glyphs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WORD));
 123             GetGlyphIndicesW(physDev->hdc, str, count, glyphs, 0);
 124         }
 125     }
 126
 127     if(align & TA_UPDATECP) {
 128         x = dc->CursPosX;
 129         y = dc->CursPosY;
 130     }
 131
 132     pt.x = x;
 133     pt.y = y;
 134     LPtoDP(physDev->hdc, &pt, 1);
 135     x = pt.x;
 136     y = pt.y;
 137
 138     if(physDev->font.fontloc == Download)
 139         GetTextExtentPointI(physDev->hdc, glyphs, count, &sz);
 140     else
 141         GetTextExtentPoint32W(physDev->hdc, str, count, &sz);
 142
 143     if((char_extra = GetTextCharacterExtra(physDev->hdc)) != 0) {
 144         INT i;
 145         SIZE tmpsz;
 146
 147         deltas = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
 148         for(i = 0; i < count; i++) {
 149             if(lpDx)
 150                 deltas[i] = lpDx[i] + char_extra;
 151             else {
 152                 if(physDev->font.fontloc == Download)
 153                     GetTextExtentPointI(physDev->hdc, glyphs + i, 1, &tmpsz);
 154                 else
 155                     GetTextExtentPoint32W(physDev->hdc, str + i, 1, &tmpsz);
 156                 deltas[i] = tmpsz.cx;
 157             }
 158         }
 159     } else if(lpDx)
 160         deltas = (INT*)lpDx;
 161
 162     if(deltas) {
 163         SIZE tmpsz;
 164         INT i;
 165         /* Get the width of the last char and add on all the offsets */
 166         if(physDev->font.fontloc == Download)
 167             GetTextExtentPointI(physDev->hdc, glyphs + count - 1, 1, &tmpsz);
 168         else
 169             GetTextExtentPoint32W(physDev->hdc, str + count - 1, 1, &tmpsz);
 170         for(i = 0; i < count-1; i++)
 171             tmpsz.cx += deltas[i];
 172         sz.cx = tmpsz.cx; /* sz.cy remains untouched */
 173     }
 174
 175     sz.cx = PSDRV_XWStoDS(physDev, sz.cx);
 176     sz.cy = PSDRV_YWStoDS(physDev, sz.cy);
 177
 178     GetTextMetricsW(physDev->hdc, &tm);
 179     ascent = PSDRV_YWStoDS(physDev, tm.tmAscent);
 180     descent = PSDRV_YWStoDS(physDev, tm.tmDescent);
 181
 182     TRACE("textAlign = %x\n", align);
 183     switch(align & (TA_LEFT | TA_CENTER | TA_RIGHT) ) {
 184     case TA_LEFT:
 185         if(align & TA_UPDATECP)
 186         {
 187             POINT pt;
 188             pt.x = x + sz.cx * cosEsc;
 189             pt.y = y - sz.cx * sinEsc;
 190             DPtoLP( physDev->hdc, &pt, 1 );
 191             dc->CursPosX = pt.x;
 192             dc->CursPosY = pt.y;
 193         }
 194         break;
 195
 196     case TA_CENTER:
 197         x -= sz.cx * cosEsc / 2;
 198         y += sz.cx * sinEsc / 2;
 199         break;
 200
 201     case TA_RIGHT:
 202         x -= sz.cx * cosEsc;
 203         y += sz.cx * sinEsc;
 204         if(align & TA_UPDATECP)
 205         {
 206             POINT pt;
 207             pt.x = x;
 208             pt.y = y;
 209             DPtoLP( physDev->hdc, &pt, 1 );
 210             dc->CursPosX = pt.x;
 211             dc->CursPosY = pt.y;
 212         }
 213         break;
 214     }
 215
 216     switch(align & (TA_TOP | TA_BASELINE | TA_BOTTOM) ) {
 217     case TA_TOP:
 218         y += ascent * cosEsc;
 219         x += ascent * sinEsc;
 220         break;
 221
 222     case TA_BASELINE:
 223         break;
 224
 225     case TA_BOTTOM:
 226         y -= descent * cosEsc;
 227         x -= descent * sinEsc;
 228         break;
 229     }
 230
 231     if ((GetBkMode( physDev->hdc ) != TRANSPARENT) && bDrawBackground)
 232     {
 233         PSDRV_WriteGSave(physDev);
 234         PSDRV_WriteNewPath(physDev);
 235         PSDRV_WriteRectangle(physDev, x, y - ascent, sz.cx,
 236                              ascent + descent);
 237         PSDRV_WriteSetColor(physDev, &physDev->bkColor);
 238         PSDRV_WriteFill(physDev);
 239         PSDRV_WriteGRestore(physDev);
 240     }
 241
 242     PSDRV_WriteMoveTo(physDev, x, y);
 243
 244     if(!deltas) {
 245         if(physDev->font.fontloc == Download)
 246             PSDRV_WriteDownloadGlyphShow(physDev, glyphs, count);
 247         else
 248             PSDRV_WriteBuiltinGlyphShow(physDev, str, count);
 249     }
 250     else {
 251         INT i;
 252         float dx = 0.0, dy = 0.0;
 253         float cos_theta = cos(physDev->font.escapement * M_PI / 1800.0);
 254         float sin_theta = sin(physDev->font.escapement * M_PI / 1800.0);
 255         for(i = 0; i < count-1; i++) {
 256             TRACE("lpDx[%d] = %d\n", i, deltas[i]);
 257             if(physDev->font.fontloc == Download)
 258                 PSDRV_WriteDownloadGlyphShow(physDev, glyphs + i, 1);
 259             else
 260                 PSDRV_WriteBuiltinGlyphShow(physDev, str + i, 1);
 261             dx += deltas[i] * cos_theta;
 262             dy -= deltas[i] * sin_theta;
 263             PSDRV_WriteMoveTo(physDev, x + PSDRV_XWStoDS(physDev, dx),
 264                               y + PSDRV_YWStoDS(physDev, dy));
 265         }
 266         if(physDev->font.fontloc == Download)
 267             PSDRV_WriteDownloadGlyphShow(physDev, glyphs + i, 1);
 268         else
 269             PSDRV_WriteBuiltinGlyphShow(physDev, str + i, 1);
 270         if(deltas != lpDx)
 271             HeapFree(GetProcessHeap(), 0, deltas);
 272     }
 273
 274     /*
 275      * Underline and strikeout attributes.
 276      */
 277     if ((tm.tmUnderlined) || (tm.tmStruckOut)) {
 278
 279         /* Get the thickness and the position for the underline attribute */
 280         /* We'll use the same thickness for the strikeout attribute       */
 281
 282         INT escapement =  physDev->font.escapement;
 283
 284         /* Do the underline */
 285
 286         if (tm.tmUnderlined) {
 287             PSDRV_WriteNewPath(physDev); /* will be closed by WriteRectangle */
 288             if (escapement != 0)  /* rotated text */
 289             {
 290                 PSDRV_WriteGSave(physDev);  /* save the graphics state */
 291                 PSDRV_WriteMoveTo(physDev, x, y); /* move to the start */
 292
 293                 /* temporarily rotate the coord system */
 294                 PSDRV_WriteRotate(physDev, -escapement/10);
 295
 296                 /* draw the underline relative to the starting point */
 297                 PSDRV_WriteRRectangle(physDev, 0, -physDev->font.underlinePosition,
 298                                       sz.cx, physDev->font.underlineThickness);
 299             }
 300             else
 301                 PSDRV_WriteRectangle(physDev, x, y - physDev->font.underlinePosition,
 302                                      sz.cx, physDev->font.underlineThickness);
 303
 304             PSDRV_WriteFill(physDev);
 305
 306             if (escapement != 0)  /* rotated text */
 307                 PSDRV_WriteGRestore(physDev);  /* restore the graphics state */
 308         }
 309
 310         /* Do the strikeout */
 311
 312         if (tm.tmStruckOut) {
 313             PSDRV_WriteNewPath(physDev); /* will be closed by WriteRectangle */
 314             if (escapement != 0)  /* rotated text */
 315             {
 316                 PSDRV_WriteGSave(physDev);  /* save the graphics state */
 317                 PSDRV_WriteMoveTo(physDev, x, y); /* move to the start */
 318
 319                 /* temporarily rotate the coord system */
 320                 PSDRV_WriteRotate(physDev, -escapement/10);
 321
 322                 /* draw the line relative to the starting point */
 323                 PSDRV_WriteRRectangle(physDev, 0, -physDev->font.strikeoutPosition,
 324                                       sz.cx, physDev->font.strikeoutThickness);
 325             }
 326             else
 327                 PSDRV_WriteRectangle(physDev, x, y - physDev->font.strikeoutPosition,
 328                                      sz.cx, physDev->font.strikeoutThickness);
 329
 330             PSDRV_WriteFill(physDev);
 331
 332             if (escapement != 0)  /* rotated text */
 333                 PSDRV_WriteGRestore(physDev);  /* restore the graphics state */
 334         }
 335     }
 336
 337     if(glyphs && glyphs != str) HeapFree(GetProcessHeap(), 0, glyphs);
 338     return TRUE;
 339 }