2 * X11 graphics driver text functions
4 * Copyright 1993,1994 Alexandre Julliard
21 #include "debugtools.h"
23 DEFAULT_DEBUG_CHANNEL(text);
25 #define SWAP_INT(a,b) { int t = a; a = b; b = t; }
26 #define IROUND(x) (int)((x)>0? (x)+0.5 : (x) - 0.5)
29 /***********************************************************************
33 X11DRV_ExtTextOut( DC *dc, INT x, INT y, UINT flags,
34 const RECT *lprect, LPCWSTR wstr, UINT count,
39 INT width, ascent, descent, xwidth, ywidth;
42 char dfBreakChar, lfUnderline, lfStrikeOut;
44 X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
45 XChar2b *str2b = NULL;
46 BOOL dibUpdateFlag = FALSE;
49 if (!X11DRV_SetupGCForText( dc )) return TRUE;
51 pfo = XFONT_GetFontObject( physDev->font );
54 if (pfo->lf.lfEscapement && pfo->lpX11Trans)
56 dfBreakChar = (char)pfo->fi->df.dfBreakChar;
57 lfUnderline = (pfo->fo_flags & FO_SYNTH_UNDERLINE) ? 1 : 0;
58 lfStrikeOut = (pfo->fo_flags & FO_SYNTH_STRIKEOUT) ? 1 : 0;
60 TRACE("hdc=%04x df=%04x %d,%d %s, %d flags=%d lpDx=%p\n",
61 dc->hSelf, (UINT16)(physDev->font), x, y,
62 debugstr_wn (wstr, count), count, flags, lpDx);
64 /* some strings sent here end in a newline for whatever reason. I have no
65 clue what the right treatment should be in general, but ignoring
66 terminating newlines seems ok. MW, April 1998. */
67 if (count > 0 && wstr[count - 1] == '\n') count--;
69 if (lprect != NULL) TRACE("\trect=(%d,%d - %d,%d)\n",
70 lprect->left, lprect->top,
71 lprect->right, lprect->bottom );
72 /* Setup coordinates */
74 if (dc->textAlign & TA_UPDATECP)
80 if (flags & (ETO_OPAQUE | ETO_CLIPPED)) /* there's a rectangle */
82 if (!lprect) /* not always */
85 if (flags & ETO_CLIPPED) /* Can't clip with no rectangle */
87 if (!X11DRV_GetTextExtentPoint( dc, wstr, count, &sz ))
89 rect.left = XLPTODP( dc, x );
90 rect.right = XLPTODP( dc, x+sz.cx );
91 rect.top = YLPTODP( dc, y );
92 rect.bottom = YLPTODP( dc, y+sz.cy );
96 rect.left = XLPTODP( dc, lprect->left );
97 rect.right = XLPTODP( dc, lprect->right );
98 rect.top = YLPTODP( dc, lprect->top );
99 rect.bottom = YLPTODP( dc, lprect->bottom );
101 if (rect.right < rect.left) SWAP_INT( rect.left, rect.right );
102 if (rect.bottom < rect.top) SWAP_INT( rect.top, rect.bottom );
105 x = XLPTODP( dc, x );
106 y = YLPTODP( dc, y );
108 TRACE("\treal coord: x=%i, y=%i, rect=(%d,%d - %d,%d)\n",
109 x, y, rect.left, rect.top, rect.right, rect.bottom);
111 /* Draw the rectangle */
113 if (flags & ETO_OPAQUE)
115 X11DRV_DIB_UpdateDIBSection( dc, FALSE );
116 dibUpdateFlag = TRUE;
117 TSXSetForeground( display, physDev->gc, physDev->backgroundPixel );
118 TSXFillRectangle( display, physDev->drawable, physDev->gc,
119 dc->DCOrgX + rect.left, dc->DCOrgY + rect.top,
120 rect.right-rect.left, rect.bottom-rect.top );
122 if (!count) goto END; /* Nothing more to do */
124 /* Compute text starting position */
126 if (lpDx) /* have explicit character cell x offsets in logical coordinates */
128 int extra = dc->wndExtX / 2;
129 for (i = width = 0; i < count; i++) width += lpDx[i];
130 width = (width * dc->vportExtX + extra ) / dc->wndExtX;
135 if (!X11DRV_GetTextExtentPoint( dc, wstr, count, &sz ))
137 width = XLSTODS(dc, sz.cx);
139 ascent = pfo->lpX11Trans ? pfo->lpX11Trans->ascent : font->ascent;
140 descent = pfo->lpX11Trans ? pfo->lpX11Trans->descent : font->descent;
141 xwidth = pfo->lpX11Trans ? width * pfo->lpX11Trans->a /
142 pfo->lpX11Trans->pixelsize : width;
143 ywidth = pfo->lpX11Trans ? width * pfo->lpX11Trans->b /
144 pfo->lpX11Trans->pixelsize : 0;
146 switch( dc->textAlign & (TA_LEFT | TA_RIGHT | TA_CENTER) )
149 if (dc->textAlign & TA_UPDATECP) {
150 dc->CursPosX = XDPTOLP( dc, x + xwidth );
151 dc->CursPosY = YDPTOLP( dc, y - ywidth );
157 if (dc->textAlign & TA_UPDATECP) {
158 dc->CursPosX = XDPTOLP( dc, x );
159 dc->CursPosY = YDPTOLP( dc, y );
168 switch( dc->textAlign & (TA_TOP | TA_BOTTOM | TA_BASELINE) )
171 x -= pfo->lpX11Trans ? ascent * pfo->lpX11Trans->c /
172 pfo->lpX11Trans->pixelsize : 0;
173 y += pfo->lpX11Trans ? ascent * pfo->lpX11Trans->d /
174 pfo->lpX11Trans->pixelsize : ascent;
177 x += pfo->lpX11Trans ? descent * pfo->lpX11Trans->c /
178 pfo->lpX11Trans->pixelsize : 0;
179 y -= pfo->lpX11Trans ? descent * pfo->lpX11Trans->d /
180 pfo->lpX11Trans->pixelsize : descent;
186 /* Set the clip region */
188 if (flags & ETO_CLIPPED)
190 SaveVisRgn16( dc->hSelf );
191 CLIPPING_IntersectVisRect( dc, rect.left, rect.top, rect.right,
192 rect.bottom, FALSE );
195 /* Draw the text background if necessary */
199 X11DRV_DIB_UpdateDIBSection( dc, FALSE );
200 dibUpdateFlag = TRUE;
203 if (dc->backgroundMode != TRANSPARENT)
205 /* If rectangle is opaque and clipped, do nothing */
206 if (!(flags & ETO_CLIPPED) || !(flags & ETO_OPAQUE))
208 /* Only draw if rectangle is not opaque or if some */
209 /* text is outside the rectangle */
210 if (!(flags & ETO_OPAQUE) ||
212 (x + width >= rect.right) ||
213 (y - ascent < rect.top) ||
214 (y + descent >= rect.bottom))
216 TSXSetForeground( display, physDev->gc,
217 physDev->backgroundPixel );
218 TSXFillRectangle( display, physDev->drawable, physDev->gc,
220 dc->DCOrgY + y - ascent,
227 /* Draw the text (count > 0 verified) */
228 if (!(str2b = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, wstr, count )))
231 TSXSetForeground( display, physDev->gc, physDev->textPixel );
234 if (!dc->charExtra && !dc->breakExtra && !lpDx)
236 X11DRV_cptable[pfo->fi->cptable].pDrawString(
237 pfo, display, physDev->drawable, physDev->gc,
238 dc->DCOrgX + x, dc->DCOrgY + y, str2b, count );
240 else /* Now the fun begins... */
242 XTextItem16 *items, *pitem;
245 /* allocate max items */
247 pitem = items = HeapAlloc( GetProcessHeap(), 0,
248 count * sizeof(XTextItem16) );
249 if(items == NULL) goto FAIL;
251 if( lpDx ) /* explicit character widths */
253 const long ve_we = dc->vportExtX*0x10000 / dc->wndExtX;
254 unsigned short err = 0;
258 /* initialize text item with accumulated delta */
263 pitem->chars = str2b + i;
264 pitem->delta = delta;
269 /* add characters to the same XTextItem
270 * until new delta becomes non-zero */
275 fSum = sum*ve_we+err;
276 delta = SHIWORD(fSum)
277 - X11DRV_cptable[pfo->fi->cptable].pTextWidth(
278 pfo, pitem->chars, pitem->nchars+1);
280 } while ((++i < count) && !delta);
285 else /* charExtra or breakExtra */
289 pitem->chars = str2b + i;
290 pitem->delta = delta;
297 delta += dc->charExtra;
298 if (str2b[i].byte2 == (char)dfBreakChar)
299 delta += dc->breakExtra;
301 } while ((++i < count) && !delta);
306 X11DRV_cptable[pfo->fi->cptable].pDrawText( pfo, display,
307 physDev->drawable, physDev->gc,
308 dc->DCOrgX + x, dc->DCOrgY + y, items, pitem - items );
309 HeapFree( GetProcessHeap(), 0, items );
314 /* have to render character by character. */
318 for (i=0; i<count; i++)
320 int char_metric_offset = str2b[i].byte2 + (str2b[i].byte1 << 8)
321 - font->min_char_or_byte2;
322 int x_i = IROUND((double) (dc->DCOrgX + x) + offset *
323 pfo->lpX11Trans->a / pfo->lpX11Trans->pixelsize );
324 int y_i = IROUND((double) (dc->DCOrgY + y) - offset *
325 pfo->lpX11Trans->b / pfo->lpX11Trans->pixelsize );
327 X11DRV_cptable[pfo->fi->cptable].pDrawString(
328 pfo, display, physDev->drawable, physDev->gc,
329 x_i, y_i, &str2b[i], 1);
331 offset += XLSTODS(dc, lpDx[i]);
334 offset += (double) (font->per_char ?
335 font->per_char[char_metric_offset].attributes:
336 font->min_bounds.attributes)
337 * pfo->lpX11Trans->pixelsize / 1000.0;
338 offset += dc->charExtra;
339 if (str2b[i].byte2 == (char)dfBreakChar)
340 offset += dc->breakExtra;
344 HeapFree( GetProcessHeap(), 0, str2b );
346 /* Draw underline and strike-out if needed */
350 long linePos, lineWidth;
352 if (!TSXGetFontProperty( font, XA_UNDERLINE_POSITION, &linePos ))
353 linePos = descent - 1;
354 if (!TSXGetFontProperty( font, XA_UNDERLINE_THICKNESS, &lineWidth ))
356 else if (lineWidth == 1) lineWidth = 0;
357 TSXSetLineAttributes( display, physDev->gc, lineWidth,
358 LineSolid, CapRound, JoinBevel );
359 TSXDrawLine( display, physDev->drawable, physDev->gc,
360 dc->DCOrgX + x, dc->DCOrgY + y + linePos,
361 dc->DCOrgX + x + width, dc->DCOrgY + y + linePos );
365 long lineAscent, lineDescent;
366 if (!TSXGetFontProperty( font, XA_STRIKEOUT_ASCENT, &lineAscent ))
367 lineAscent = ascent / 2;
368 if (!TSXGetFontProperty( font, XA_STRIKEOUT_DESCENT, &lineDescent ))
369 lineDescent = -lineAscent * 2 / 3;
370 TSXSetLineAttributes( display, physDev->gc, lineAscent + lineDescent,
371 LineSolid, CapRound, JoinBevel );
372 TSXDrawLine( display, physDev->drawable, physDev->gc,
373 dc->DCOrgX + x, dc->DCOrgY + y - lineAscent,
374 dc->DCOrgX + x + width, dc->DCOrgY + y - lineAscent );
377 if (flags & ETO_CLIPPED)
378 RestoreVisRgn16( dc->hSelf );
383 if(str2b != NULL) HeapFree( GetProcessHeap(), 0, str2b );
387 if (dibUpdateFlag) X11DRV_DIB_UpdateDIBSection( dc, TRUE );
392 /***********************************************************************
393 * X11DRV_GetTextExtentPoint
395 BOOL X11DRV_GetTextExtentPoint( DC *dc, LPCWSTR str, INT count,
398 X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
399 fontObject* pfo = XFONT_GetFontObject( physDev->font );
401 TRACE("%s %d\n", debugstr_wn(str,count), count);
403 XChar2b *p = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, str, count );
404 if (!p) return FALSE;
405 if( !pfo->lpX11Trans ) {
406 int dir, ascent, descent;
408 X11DRV_cptable[pfo->fi->cptable].pTextExtents( pfo, p,
409 count, &dir, &ascent, &descent, &info_width );
410 size->cx = abs((info_width + dc->breakRem + count *
411 dc->charExtra) * dc->wndExtX / dc->vportExtX);
412 size->cy = abs((pfo->fs->ascent + pfo->fs->descent) *
413 dc->wndExtY / dc->vportExtY);
416 float x = 0.0, y = 0.0;
417 /* FIXME: Deal with *_char_or_byte2 != 0 situations */
418 for(i = 0; i < count; i++) {
419 x += pfo->fs->per_char ?
420 pfo->fs->per_char[p[i].byte2 - pfo->fs->min_char_or_byte2].attributes :
421 pfo->fs->min_bounds.attributes;
423 y = pfo->lpX11Trans->RAW_ASCENT + pfo->lpX11Trans->RAW_DESCENT;
424 TRACE("x = %f y = %f\n", x, y);
425 x *= pfo->lpX11Trans->pixelsize / 1000.0;
426 y *= pfo->lpX11Trans->pixelsize / 1000.0;
427 size->cx = fabs((x + dc->breakRem + count * dc->charExtra) *
428 dc->wndExtX / dc->vportExtX);
429 size->cy = fabs(y * dc->wndExtY / dc->vportExtY);
431 size->cx *= pfo->rescale;
432 size->cy *= pfo->rescale;
433 HeapFree( GetProcessHeap(), 0, p );