all repos — fluxbox @ d17bf39a43a7581773c67d496e4022499d59cd26

custom fork of the fluxbox windowmanager

src/FbTk/XFontImp.cc (raw)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
// XFontImp.cc for FbTk fluxbox toolkit
// Copyright (c) 2002 Henrik Kinnunen (fluxgen@linuxmail.org)
// 
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

// $Id: XFontImp.cc,v 1.9 2004/08/31 15:26:39 rathnor Exp $

#include "XFontImp.hh"
#include "App.hh"
#include "GContext.hh"
#include "FbPixmap.hh"
#include "I18n.hh"

#include <X11/Xutil.h>

#include <iostream>
#include <new>
#ifdef HAVE_CSTDIO
  #include <cstdio>
#else
  #include <stdio.h>
#endif
using namespace std;

namespace FbTk {

XFontImp::XFontImp(const char *fontname):m_rotfont(0), m_fontstruct(0),
                                         m_angle(0), m_rotate(true) {
    if (fontname != 0)
        load(fontname);	
}

XFontImp::~XFontImp() {
    if (m_fontstruct != 0)
        XFreeFont(App::instance()->display(), m_fontstruct);
    if (m_rotfont != 0)
        freeRotFont();
}

int XFontImp::ascent() const {
    if (m_fontstruct == 0)
        return 0;
    if (m_rotfont != 0)
        return m_rotfont->max_ascent;
		
    return m_fontstruct->ascent;
}

bool XFontImp::load(const std::string &fontname) {
    XFontStruct *font = XLoadQueryFont(App::instance()->display(), fontname.c_str());
    if (font == 0)
        return false;
    if (m_fontstruct != 0) // free old font struct, if any
        XFreeFont(App::instance()->display(), m_fontstruct);

    m_fontstruct = font; //set new font

    if (m_rotfont != 0) {
        freeRotFont(); // free old rotated font
        rotate(m_angle); // allocate new rotated font and rotate it to old angle
    }

    return true;
}

void XFontImp::drawText(Drawable w, int screen, GC gc, const char *text, size_t len, int x, int y) const {
    if (m_fontstruct == 0)
        return;
    // use roated font functions?
    if (m_rotfont != 0 && m_rotate) {
        drawRotText(w, screen, gc, text, len, x, y);
        return;
    }

    Display *disp = App::instance()->display();
    XSetFont(disp, gc, m_fontstruct->fid);
    XDrawString(disp, w, gc, x, y, text, len);
}

unsigned int XFontImp::textWidth(const char * const text, unsigned int size) const {
    if (text == 0 || m_fontstruct == 0)
        return 0;

    // check rotated font?
    if (m_rotfont != 0)
        return rotTextWidth(text, size);

    return XTextWidth(m_fontstruct, text, size);
}

unsigned int XFontImp::height() const {
    if (m_fontstruct == 0)
        return 0;

    return m_fontstruct->ascent + m_fontstruct->descent;
}

void XFontImp::rotate(float angle) {
    //we must have a font loaded before we rotate
    if (m_fontstruct == 0 || m_fontstruct->per_char == 0)
        return;

    if (m_rotfont != 0)
        freeRotFont();

    // no need for rotating, use regular font
    if (angle == 0) {
        m_angle = 0;
        return;
    }

    _FB_USES_NLS;

    //get positive angle
    while (angle < 0)
        angle += 360;

    m_angle = angle;

    // X system default vars
    Display *dpy = App::instance()->display();
    Window rootwin = DefaultRootWindow(dpy);
    int screen = DefaultScreen(dpy);

    char text[3];
    int ichar, i, j, index, boxlen = 60;
    int vert_w, vert_h, vert_len, bit_w, bit_h, bit_len;
    int min_char, max_char;
    unsigned char *vertdata, *bitdata;
    int ascent, descent, lbearing, rbearing;

    // get nearest vertical or horizontal direction 
    int dir = (int)((angle+45.0)/90.0)%4;

    if (dir == 0) // no rotation
        return;

    // create the depth 1 canvas bitmap
    FbTk::FbPixmap canvas(rootwin, boxlen, boxlen, 1);
 
    // create graphic context for our canvas
    FbTk::GContext font_gc(canvas);
    font_gc.setBackground(None);
    font_gc.setFont(m_fontstruct->fid);

    // allocate space for rotated font
    m_rotfont = new(nothrow) XRotFontStruct;

    if (m_rotfont == 0) {
        cerr<<"RotFont: "<<_FBTKTEXT(Error, OutOfMemory, "Out of memory", "Something couldn't allocate memory")<<endl;
        return;
    }
   
    // determine which characters are defined in font
    min_char = m_fontstruct->min_char_or_byte2; 
    max_char = m_fontstruct->max_char_or_byte2;
 
    // we only want printable chars
    if (min_char<32)
        min_char = 32;
    if (max_char>126)
        max_char = 126;
     
    /* some overall font data ... */
    m_rotfont->dir = dir;
    m_rotfont->min_char = min_char;
    m_rotfont->max_char = max_char;
    m_rotfont->max_ascent = m_fontstruct->max_bounds.ascent;
    m_rotfont->max_descent = m_fontstruct->max_bounds.descent;   
    m_rotfont->height = m_rotfont->max_ascent + m_rotfont->max_descent;

    // font needs rotation
    // loop through each character
    for (ichar = min_char; ichar <= max_char; ichar++) {
        index = ichar - m_fontstruct->min_char_or_byte2;

        // per char dimensions ...
        ascent = m_rotfont->per_char[ichar-32].ascent = m_fontstruct->per_char[index].ascent;
        descent =  m_rotfont->per_char[ichar-32].descent = m_fontstruct->per_char[index].descent;
        lbearing = m_rotfont->per_char[ichar-32].lbearing = m_fontstruct->per_char[index].lbearing;
        rbearing = m_rotfont->per_char[ichar-32].rbearing = m_fontstruct->per_char[index].rbearing;
        m_rotfont->per_char[ichar-32].width = m_fontstruct->per_char[index].width;

        // some space chars have zero body, but a bitmap can't have
        if (!ascent && !descent)   
            ascent = m_rotfont->per_char[ichar-32].ascent =   1;
        if (!lbearing && !rbearing) 
            rbearing = m_rotfont->per_char[ichar-32].rbearing = 1;

        // glyph width and height when vertical
        vert_w = rbearing - lbearing;
        vert_h = ascent + descent;

        // width in bytes
        vert_len = (vert_w-1)/8+1;   

        font_gc.setForeground(None);        
        canvas.fillRectangle(font_gc.gc(),
                             0, 0,
                             boxlen, boxlen);
        // draw the character centre top right on canvas
        sprintf(text, "%c", ichar);
        font_gc.setForeground(1);
        XDrawImageString(dpy, canvas.drawable(), font_gc.gc(),
                         boxlen/2 - lbearing,
                         boxlen/2 - descent, text, 1);

        // reserve memory for first XImage
        vertdata = new unsigned char[vert_len * vert_h];

        XImage *I1 = XCreateImage(dpy, DefaultVisual(dpy, screen), 
                                  1, XYBitmap,
                                  0, (char *)vertdata, 
                                  vert_w, vert_h, 8, 0);

        if (I1 == None) {				
            cerr<<"RotFont: "<<_FBTKTEXT(Error, CreateXImage, "Cant create XImage", "XCreateImage failed for some reason")<<"."<<endl;
            delete m_rotfont;
            m_rotfont = 0;			
            return;
        }

        I1->byte_order = I1->bitmap_bit_order = MSBFirst;

        // extract character from canvas
        XGetSubImage(dpy, canvas.drawable(), 
                     boxlen/2, boxlen/2 - vert_h,
                     vert_w, vert_h, 1, XYPixmap, I1, 0, 0);

        I1->format = XYBitmap; 

        // width, height of rotated character
        if (dir == 2) { 
            bit_w = vert_w;
            bit_h = vert_h; 
        } else {
            bit_w = vert_h;
            bit_h = vert_w; 
        }

        // width in bytes
        bit_len = (bit_w-1)/8 + 1;

        m_rotfont->per_char[ichar-32].glyph.bit_w = bit_w;
        m_rotfont->per_char[ichar-32].glyph.bit_h = bit_h;

        // reserve memory for the rotated image
        bitdata = (unsigned char *)calloc((unsigned)(bit_h * bit_len), 1);

        // create the image
        XImage *I2 = XCreateImage(dpy, DefaultVisual(dpy, screen), 1, XYBitmap, 0,
                          (char *)bitdata, bit_w, bit_h, 8, 0); 

        if (I2 == None) {
            cerr<<"XFontImp: "<<_FBTKTEXT(Error, CreateXImage, "Cant create XImage", "XCreateImage failed for some reason")<<"."<<endl;
            delete m_rotfont;
            m_rotfont = 0;
            return;
        }

        I2->byte_order = I2->bitmap_bit_order = MSBFirst;

        // map vertical data to rotated character
        for (j = 0; j < bit_h; j++) {
            for (i = 0; i < bit_w; i++) {
                char val = 0;
                if (dir == 1) {
                    val = vertdata[i*vert_len + (vert_w-j-1)/8] &
                        (128>>((vert_w-j-1)%8));
                } else if (dir == 2) {
                    val = vertdata[(vert_h-j-1)*vert_len +
                                   (vert_w-i-1)/8] & (128>>((vert_w-i-1)%8));
                } else {
                    val = vertdata[(vert_h-i-1)*vert_len + j/8] & 
                        (128>>(j%8));
                } 
                if (val) {
                    bitdata[j*bit_len + i/8] = bitdata[j*bit_len + i/8] |
                        (128>>(i%8));
                }
            }
        }

        // create this character's bitmap 
        m_rotfont->per_char[ichar-32].glyph.bm = 
            XCreatePixmap(dpy, rootwin, bit_w, bit_h, 1);
 
        // put the image into the bitmap 
        XPutImage(dpy, m_rotfont->per_char[ichar-32].glyph.bm, 
                  font_gc.gc(), I2, 0, 0, 0, 0, bit_w, bit_h);

        // free the image and data
        XDestroyImage(I1);
        XDestroyImage(I2);
    }

}

void XFontImp::freeRotFont() {
    if (m_rotfont == 0)
        return;
    // loop through each character and free its pixmap
    for (int ichar = m_rotfont->min_char - 32; 
         ichar <= m_rotfont->max_char - 32; ++ichar) {
        XFreePixmap(App::instance()->display(), m_rotfont->per_char[ichar].glyph.bm);
    }

    delete m_rotfont;
    m_rotfont = 0;
}

void XFontImp::drawRotText(Drawable w, int screen, GC gc, const char *text, size_t len, int x, int y) const {            

    Display *dpy = App::instance()->display();
    static GC my_gc = 0;
    int xp, yp, dir, ichar;

    if (text == NULL || len<1)
        return;

    dir = m_rotfont->dir;
    if (my_gc == 0)
        my_gc = XCreateGC(dpy, w, 0, 0);

    XCopyGC(dpy, gc, GCForeground|GCBackground, my_gc);

    // vertical or upside down

    XSetFillStyle(dpy, my_gc, FillStippled);

    // loop through each character in texting
    for (size_t i = 0; i<len; i++) {
        ichar = text[i]-32;

        // make sure it's a printing character
        if (ichar >= 0 && ichar<95) {
            // suitable offset
            if (dir == 1) {
                xp = x-m_rotfont->per_char[ichar].ascent;
                yp = y-m_rotfont->per_char[ichar].rbearing; 
            } else if (dir == 2) {
                xp = x-m_rotfont->per_char[ichar].rbearing;
                yp = y-m_rotfont->per_char[ichar].descent+1; 
            } else {
                xp = x-m_rotfont->per_char[ichar].descent+1;  
                yp = y+m_rotfont->per_char[ichar].lbearing; 
            }
                   
            // draw the glyph
            XSetStipple(dpy, my_gc, m_rotfont->per_char[ichar].glyph.bm);
    
            XSetTSOrigin(dpy, my_gc, xp, yp);
      
            XFillRectangle(dpy, w, my_gc, xp, yp,
                           m_rotfont->per_char[ichar].glyph.bit_w,
                           m_rotfont->per_char[ichar].glyph.bit_h);
    
            // advance position
            if (dir == 1)
                y -= m_rotfont->per_char[ichar].width;
            else if (dir == 2)
                x -= m_rotfont->per_char[ichar].width;
            else 
                y += m_rotfont->per_char[ichar].width;
        }
    }
}


unsigned int XFontImp::rotTextWidth(const char * const text, unsigned int size) const {

    if (text == 0)
        return 0;

    unsigned int width = 0;	
    for (size_t i = 0; i<size; i++) {
        int ichar = text[i] - 32;  
        // make sure it's a printing character
        if (ichar >= 0 && ichar < 95) 
            width += m_rotfont->per_char[ichar].width;
    }

    return width;
}

};