1 /*
2 * X11 graphics driver text functions
3 *
4 * Copyright 1993,1994 Alexandre Julliard
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
21 #include "config.h"
22
23 #include <stdarg.h>
24 #include <stdlib.h>
25 #include <math.h>
26
27 #include "windef.h"
28 #include "winbase.h"
29 #include "x11font.h"
30 #include "wine/debug.h"
31
32 WINE_DEFAULT_DEBUG_CHANNEL(text);
33
34 #define IROUND(x) (int)((x)>0? (x)+0.5 : (x) - 0.5)
35
36
37 /***********************************************************************
38 * X11DRV_ExtTextOut
39 */
40 BOOL CDECL
41 X11DRV_ExtTextOut( X11DRV_PDEVICE *physDev, INT x, INT y, UINT flags,
42 const RECT *lprect, LPCWSTR wstr, UINT count,
43 const INT *lpDx )
44 {
45 unsigned int i;
46 fontObject* pfo;
47 XFontStruct* font;
48 BOOL rotated = FALSE;
49 XChar2b *str2b = NULL;
50 BOOL dibUpdateFlag = FALSE;
51 BOOL result = TRUE;
52 HRGN saved_region = 0;
53
54 if(physDev->has_gdi_font)
55 return X11DRV_XRender_ExtTextOut(physDev, x, y, flags, lprect, wstr, count, lpDx);
56
57 if (!X11DRV_SetupGCForText( physDev )) return TRUE;
58
59 pfo = XFONT_GetFontObject( physDev->font );
60 font = pfo->fs;
61
62 if (pfo->lf.lfEscapement && pfo->lpX11Trans)
63 rotated = TRUE;
64
65 TRACE("hdc=%p df=%04x %d,%d rc %s %s, %d flags=%d lpDx=%p\n",
66 physDev->hdc, (UINT16)physDev->font, x, y, wine_dbgstr_rect(lprect),
67 debugstr_wn (wstr, count), count, flags, lpDx);
68
69 /* Draw the rectangle */
70
71 if (flags & ETO_OPAQUE)
72 {
73 X11DRV_LockDIBSection( physDev, DIB_Status_GdiMod );
74 dibUpdateFlag = TRUE;
75 wine_tsx11_lock();
76 XSetForeground( gdi_display, physDev->gc, physDev->backgroundPixel );
77 XFillRectangle( gdi_display, physDev->drawable, physDev->gc,
78 physDev->dc_rect.left + lprect->left, physDev->dc_rect.top + lprect->top,
79 lprect->right - lprect->left, lprect->bottom - lprect->top );
80 wine_tsx11_unlock();
81 }
82 if (!count) goto END; /* Nothing more to do */
83
84
85 /* Set the clip region */
86
87 if (flags & ETO_CLIPPED)
88 {
89 HRGN clip_region;
90
91 clip_region = CreateRectRgnIndirect( lprect );
92 /* make a copy of the current device region */
93 saved_region = CreateRectRgn( 0, 0, 0, 0 );
94 CombineRgn( saved_region, physDev->region, 0, RGN_COPY );
95 X11DRV_SetDeviceClipping( physDev, saved_region, clip_region );
96 DeleteObject( clip_region );
97 }
98
99 /* Draw the text background if necessary */
100
101 if (!dibUpdateFlag)
102 {
103 X11DRV_LockDIBSection( physDev, DIB_Status_GdiMod );
104 dibUpdateFlag = TRUE;
105 }
106
107
108 /* Draw the text (count > 0 verified) */
109 if (!(str2b = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, wstr, count )))
110 goto FAIL;
111
112 wine_tsx11_lock();
113 XSetForeground( gdi_display, physDev->gc, physDev->textPixel );
114 wine_tsx11_unlock();
115 if(!rotated)
116 {
117 if (!lpDx)
118 {
119 X11DRV_cptable[pfo->fi->cptable].pDrawString(
120 pfo, gdi_display, physDev->drawable, physDev->gc,
121 physDev->dc_rect.left + x, physDev->dc_rect.top + y, str2b, count );
122 }
123 else
124 {
125 XTextItem16 *items;
126
127 items = HeapAlloc( GetProcessHeap(), 0, count * sizeof(XTextItem16) );
128 if(items == NULL) goto FAIL;
129
130 items[0].chars = str2b;
131 items[0].delta = 0;
132 items[0].nchars = 1;
133 items[0].font = None;
134 for(i = 1; i < count; i++)
135 {
136 items[i].chars = str2b + i;
137 items[i].delta = (flags & ETO_PDY) ? lpDx[(i - 1) * 2] : lpDx[i - 1];
138 items[i].delta -= X11DRV_cptable[pfo->fi->cptable].pTextWidth( pfo, str2b + i - 1, 1 );
139 items[i].nchars = 1;
140 items[i].font = None;
141 }
142 X11DRV_cptable[pfo->fi->cptable].pDrawText( pfo, gdi_display,
143 physDev->drawable, physDev->gc,
144 physDev->dc_rect.left + x, physDev->dc_rect.top + y, items, count );
145 HeapFree( GetProcessHeap(), 0, items );
146 }
147 }
148 else /* rotated */
149 {
150 /* have to render character by character. */
151 double offset = 0.0;
152 UINT i;
153
154 for (i=0; i<count; i++)
155 {
156 int char_metric_offset = str2b[i].byte2 + (str2b[i].byte1 << 8)
157 - font->min_char_or_byte2;
158 int x_i = IROUND((double) (physDev->dc_rect.left + x) + offset *
159 pfo->lpX11Trans->a / pfo->lpX11Trans->pixelsize );
160 int y_i = IROUND((double) (physDev->dc_rect.top + y) - offset *
161 pfo->lpX11Trans->b / pfo->lpX11Trans->pixelsize );
162
163 X11DRV_cptable[pfo->fi->cptable].pDrawString(
164 pfo, gdi_display, physDev->drawable, physDev->gc,
165 x_i, y_i, &str2b[i], 1);
166 if (lpDx)
167 {
168 offset += (flags & ETO_PDY) ? lpDx[i * 2] : lpDx[i];
169 }
170 else
171 {
172 offset += (double) (font->per_char ?
173 font->per_char[char_metric_offset].attributes:
174 font->min_bounds.attributes)
175 * pfo->lpX11Trans->pixelsize / 1000.0;
176 }
177 }
178 }
179 HeapFree( GetProcessHeap(), 0, str2b );
180
181 if (flags & ETO_CLIPPED)
182 {
183 /* restore the device region */
184 X11DRV_SetDeviceClipping( physDev, saved_region, 0 );
185 DeleteObject( saved_region );
186 }
187 goto END;
188
189 FAIL:
190 HeapFree( GetProcessHeap(), 0, str2b );
191 result = FALSE;
192
193 END:
194 if (dibUpdateFlag) X11DRV_UnlockDIBSection( physDev, TRUE );
195 return result;
196 }
197
198
199 /***********************************************************************
200 * X11DRV_GetTextExtentExPoint
201 */
202 BOOL CDECL X11DRV_GetTextExtentExPoint( X11DRV_PDEVICE *physDev, LPCWSTR str, INT count,
203 INT maxExt, LPINT lpnFit, LPINT alpDx, LPSIZE size )
204 {
205 fontObject* pfo = XFONT_GetFontObject( physDev->font );
206
207 TRACE("%s %d\n", debugstr_wn(str,count), count);
208 if( pfo ) {
209 XChar2b *p = X11DRV_cptable[pfo->fi->cptable].punicode_to_char2b( pfo, str, count );
210 if (!p) return FALSE;
211 if( !pfo->lpX11Trans ) {
212 int dir, ascent, descent;
213 int info_width;
214 X11DRV_cptable[pfo->fi->cptable].pTextExtents( pfo, p,
215 count, &dir, &ascent, &descent, &info_width,
216 maxExt, lpnFit, alpDx );
217
218 size->cx = info_width;
219 size->cy = pfo->fs->ascent + pfo->fs->descent;
220 } else {
221 INT i;
222 INT nfit = 0;
223 float x = 0.0, y = 0.0;
224 float scaled_x = 0.0, pixsize = pfo->lpX11Trans->pixelsize;
225 /* FIXME: Deal with *_char_or_byte2 != 0 situations */
226 for(i = 0; i < count; i++) {
227 x += pfo->fs->per_char ?
228 pfo->fs->per_char[p[i].byte2 - pfo->fs->min_char_or_byte2].attributes :
229 pfo->fs->min_bounds.attributes;
230 scaled_x = x * pixsize / 1000.0;
231 if (alpDx)
232 alpDx[i] = scaled_x;
233 if (scaled_x <= maxExt)
234 ++nfit;
235 }
236 y = pfo->lpX11Trans->RAW_ASCENT + pfo->lpX11Trans->RAW_DESCENT;
237 TRACE("x = %f y = %f\n", x, y);
238 size->cx = x * pfo->lpX11Trans->pixelsize / 1000.0;
239 size->cy = y * pfo->lpX11Trans->pixelsize / 1000.0;
240 if (lpnFit)
241 *lpnFit = nfit;
242 }
243 size->cx *= pfo->rescale;
244 size->cy *= pfo->rescale;
245 HeapFree( GetProcessHeap(), 0, p );
246 return TRUE;
247 }
248 return FALSE;
249 }
250
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