2 * X11 graphics driver text functions
4 * Copyright 1993,1994 Alexandre Julliard
14 /*#include "callback.h"*/
20 #define SWAP_INT(a,b) { int t = a; a = b; b = t; }
21 #define IROUND(x) (int)((x)>0? (x)+0.5 : (x) - 0.5)
23 /***********************************************************************
27 X11DRV_ExtTextOut( DC *dc, INT32 x, INT32 y, UINT32 flags,
28 const RECT32 *lprect, LPCSTR str, UINT32 count,
32 int dir, ascent, descent, i;
37 char dfBreakChar, lfUnderline, lfStrikeOut;
39 if (!DC_SetupGCForText( dc )) return TRUE;
41 pfo = XFONT_GetFontObject( dc->u.x.font );
44 dfBreakChar = (char)pfo->fi->df.dfBreakChar;
45 lfUnderline = (pfo->fo_flags & FO_SYNTH_UNDERLINE) ? 1 : 0;
46 lfStrikeOut = (pfo->fo_flags & FO_SYNTH_STRIKEOUT) ? 1 : 0;
48 TRACE(text,"hdc=%04x df=%04x %d,%d %s, %d flags=%d\n",
49 dc->hSelf, (UINT16)(dc->u.x.font), x, y,
50 debugstr_an (str, count), count, flags);
52 /* some strings sent here end in a newline for whatever reason. I have no
53 clue what the right treatment should be in general, but ignoring
54 terminating newlines seems ok. MW, April 1998. */
55 if (count > 0 && str[count - 1] == '\n') count--;
57 if (lprect != NULL) TRACE(text, "\trect=(%d,%d - %d,%d)\n",
58 lprect->left, lprect->top,
59 lprect->right, lprect->bottom );
60 /* Setup coordinates */
62 if (dc->w.textAlign & TA_UPDATECP)
68 if (flags & (ETO_OPAQUE | ETO_CLIPPED)) /* there's a rectangle */
70 if (!lprect) /* not always */
73 if (flags & ETO_CLIPPED) /* Can't clip with no rectangle */
75 if (!X11DRV_GetTextExtentPoint( dc, str, count, &sz ))
77 rect.left = XLPTODP( dc, x );
78 rect.right = XLPTODP( dc, x+sz.cx );
79 rect.top = YLPTODP( dc, y );
80 rect.bottom = YLPTODP( dc, y+sz.cy );
84 rect.left = XLPTODP( dc, lprect->left );
85 rect.right = XLPTODP( dc, lprect->right );
86 rect.top = YLPTODP( dc, lprect->top );
87 rect.bottom = YLPTODP( dc, lprect->bottom );
89 if (rect.right < rect.left) SWAP_INT( rect.left, rect.right );
90 if (rect.bottom < rect.top) SWAP_INT( rect.top, rect.bottom );
96 TRACE(text,"\treal coord: x=%i, y=%i, rect=(%d,%d - %d,%d)\n",
97 x, y, rect.left, rect.top, rect.right, rect.bottom);
99 /* Draw the rectangle */
101 if (flags & ETO_OPAQUE)
103 TSXSetForeground( display, dc->u.x.gc, dc->w.backgroundPixel );
104 TSXFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
105 dc->w.DCOrgX + rect.left, dc->w.DCOrgY + rect.top,
106 rect.right-rect.left, rect.bottom-rect.top );
108 if (!count) return TRUE; /* Nothing more to do */
110 /* Compute text starting position */
112 if (lpDx) /* have explicit character cell x offsets in logical coordinates */
114 int extra = dc->wndExtX / 2;
115 for (i = info.width = 0; i < count; i++) info.width += lpDx[i];
116 info.width = (info.width * dc->vportExtX + extra ) / dc->wndExtX;
120 TSXTextExtents( font, str, count, &dir, &ascent, &descent, &info );
121 info.width += count*dc->w.charExtra + dc->w.breakExtra*dc->w.breakCount;
124 switch( dc->w.textAlign & (TA_LEFT | TA_RIGHT | TA_CENTER) )
127 if (dc->w.textAlign & TA_UPDATECP)
128 dc->w.CursPosX = XDPTOLP( dc, x + info.width );
132 if (dc->w.textAlign & TA_UPDATECP) dc->w.CursPosX = XDPTOLP( dc, x );
139 switch( dc->w.textAlign & (TA_TOP | TA_BOTTOM | TA_BASELINE) )
151 /* Set the clip region */
153 if (flags & ETO_CLIPPED)
155 hRgnClip = dc->w.hClipRgn;
156 CLIPPING_IntersectClipRect( dc, rect.left, rect.top, rect.right,
157 rect.bottom, CLIP_INTERSECT|CLIP_KEEPRGN );
160 /* Draw the text background if necessary */
162 if (dc->w.backgroundMode != TRANSPARENT)
164 /* If rectangle is opaque and clipped, do nothing */
165 if (!(flags & ETO_CLIPPED) || !(flags & ETO_OPAQUE))
167 /* Only draw if rectangle is not opaque or if some */
168 /* text is outside the rectangle */
169 if (!(flags & ETO_OPAQUE) ||
171 (x + info.width >= rect.right) ||
172 (y-font->ascent < rect.top) ||
173 (y+font->descent >= rect.bottom))
175 TSXSetForeground( display, dc->u.x.gc, dc->w.backgroundPixel );
176 TSXFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
178 dc->w.DCOrgY + y - font->ascent,
180 font->ascent + font->descent );
185 /* Draw the text (count > 0 verified) */
187 TSXSetForeground( display, dc->u.x.gc, dc->w.textPixel );
188 if (!dc->w.charExtra && !dc->w.breakExtra && !lpDx)
190 if (!pfo->lf.lfOrientation) /* angled baseline? */
192 TSXDrawString( display, dc->u.x.drawable, dc->u.x.gc,
193 dc->w.DCOrgX + x, dc->w.DCOrgY + y, str, count );
197 /* have to render character by character. */
200 /* tenths of degrees to radians */
201 double theta = M_PI*pfo->lf.lfOrientation/1800.;
202 /* components of pointsize matrix */
203 double xc = pfo->fi->lfd_decipoints*cos(theta)/10.;
204 double yc = pfo->fi->lfd_decipoints*sin(theta)/10.;
206 for(i=0; i<count; i++) {
207 int char_metric_offset = (unsigned char) str[i]
208 - font->min_char_or_byte2;
209 int x_i = IROUND((double) (dc->w.DCOrgX + x) + offset*xc/1000. );
210 int y_i = IROUND((double) (dc->w.DCOrgY + y) - offset*yc/1000. );
212 TSXDrawString( display, dc->u.x.drawable, dc->u.x.gc,
213 x_i, y_i, &str[i], 1);
214 offset += (double) (font->per_char ?
215 font->per_char[char_metric_offset].attributes:
216 font->min_bounds.attributes);
220 else /* Now the fun begins... */
222 XTextItem *items, *pitem;
225 /* allocate max items */
227 pitem = items = HEAP_xalloc( GetProcessHeap(), 0,
228 count * sizeof(XTextItem) );
230 if( lpDx ) /* explicit character widths */
232 int extra = dc->wndExtX / 2;
236 /* initialize text item with accumulated delta */
238 pitem->chars = (char *)str + i;
239 pitem->delta = delta;
244 /* add characters to the same XTextItem until new delta
245 * becomes non-zero */
249 delta += (lpDx[i] * dc->vportExtX + extra) / dc->wndExtX
250 - TSXTextWidth( font, str + i, 1);
252 } while ((++i < count) && !delta);
256 else /* charExtra or breakExtra */
260 pitem->chars = (char *)str + i;
261 pitem->delta = delta;
268 delta += dc->w.charExtra;
269 if (str[i] == (char)dfBreakChar) delta += dc->w.breakExtra;
271 } while ((++i < count) && !delta);
276 TSXDrawText( display, dc->u.x.drawable, dc->u.x.gc,
277 dc->w.DCOrgX + x, dc->w.DCOrgY + y, items, pitem - items );
278 HeapFree( GetProcessHeap(), 0, items );
281 /* Draw underline and strike-out if needed */
285 long linePos, lineWidth;
287 if (!TSXGetFontProperty( font, XA_UNDERLINE_POSITION, &linePos ))
288 linePos = font->descent-1;
289 if (!TSXGetFontProperty( font, XA_UNDERLINE_THICKNESS, &lineWidth ))
291 else if (lineWidth == 1) lineWidth = 0;
292 TSXSetLineAttributes( display, dc->u.x.gc, lineWidth,
293 LineSolid, CapRound, JoinBevel );
294 TSXDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
295 dc->w.DCOrgX + x, dc->w.DCOrgY + y + linePos,
296 dc->w.DCOrgX + x + info.width, dc->w.DCOrgY + y + linePos );
300 long lineAscent, lineDescent;
301 if (!TSXGetFontProperty( font, XA_STRIKEOUT_ASCENT, &lineAscent ))
302 lineAscent = font->ascent / 2;
303 if (!TSXGetFontProperty( font, XA_STRIKEOUT_DESCENT, &lineDescent ))
304 lineDescent = -lineAscent * 2 / 3;
305 TSXSetLineAttributes( display, dc->u.x.gc, lineAscent + lineDescent,
306 LineSolid, CapRound, JoinBevel );
307 TSXDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
308 dc->w.DCOrgX + x, dc->w.DCOrgY + y - lineAscent,
309 dc->w.DCOrgX + x + info.width, dc->w.DCOrgY + y - lineAscent );
312 if (flags & ETO_CLIPPED)
314 SelectClipRgn32( dc->hSelf, hRgnClip );
315 DeleteObject32( hRgnClip );