summaryrefslogtreecommitdiffstats
path: root/firmware/drivers/lcd-bitmap-common.c
blob: 878c08863b97aab2ef3dc19965decc18bf0249f6 (plain)
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
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2005 Dave Chapman
 *     Text rendering
 * Copyright (C) 2006 Shachar Liberman
 *     Offset text, scrolling
 * Copyright (C) 2007 Nicolas Pennequin, Tom Ross, Ken Fazzone, Akio Idehara
 *     Color gradient background
 * Copyright (C) 2009 Andrew Mahone
 *     Merged common LCD bitmap code
 *
 * Rockbox common bitmap LCD functions
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/
#include <stdarg.h>
#include <stdio.h>
#include "string-extra.h"
#include "diacritic.h"

#ifndef LCDFN /* Not compiling for remote - define macros for main LCD. */
#define LCDFN(fn) lcd_ ## fn
#define FBFN(fn)  fb_ ## fn
#define LCDM(ma) LCD_ ## ma
#define LCDNAME "lcd_"
#define MAIN_LCD
#endif

#if defined(MAIN_LCD) && defined(HAVE_LCD_COLOR)
/* Fill a rectangle with a gradient */
static void lcd_gradient_rect(int x1, int x2, int y, unsigned h,
                              int num_lines, int cur_line)
{
    int old_pattern = current_vp->fg_pattern;
    int step_mul;
    if (h == 0) return;

    num_lines *= h;
    cur_line *= h;
    step_mul = (1 << 16) / (num_lines);
    int h_r = RGB_UNPACK_RED(current_vp->lss_pattern);
    int h_g = RGB_UNPACK_GREEN(current_vp->lss_pattern);
    int h_b = RGB_UNPACK_BLUE(current_vp->lss_pattern);
    int rstep = (h_r - RGB_UNPACK_RED(current_vp->lse_pattern)) * step_mul;
    int gstep = (h_g - RGB_UNPACK_GREEN(current_vp->lse_pattern)) * step_mul;
    int bstep = (h_b - RGB_UNPACK_BLUE(current_vp->lse_pattern)) * step_mul;
    h_r = (h_r << 16) + (1 << 15);
    h_g = (h_g << 16) + (1 << 15);
    h_b = (h_b << 16) + (1 << 15);
    if (cur_line)
    {
        h_r -= cur_line * rstep;
        h_g -= cur_line * gstep;
        h_b -= cur_line * bstep;
    }
    unsigned     count;

    for(count = 0; count < h; count++) {
        current_vp->fg_pattern = LCD_RGBPACK(h_r >> 16, h_g >> 16, h_b >> 16);
        lcd_hline(x1, x2, y + count);
        h_r -= rstep;
        h_g -= gstep;
        h_b -= bstep;
    }

    current_vp->fg_pattern = old_pattern;
}
#endif

/*
 * draws the borders of the current viewport
 **/
void LCDFN(draw_border_viewport)(void)
{
    LCDFN(drawrect)(0, 0, current_vp->width, current_vp->height);
}

/*
 * fills the rectangle formed by current_vp
 **/
void LCDFN(fill_viewport)(void)
{
    LCDFN(fillrect)(0, 0, current_vp->width, current_vp->height);
}

/* put a string at a given pixel position, skipping first ofs pixel columns */
static void LCDFN(putsxyofs)(int x, int y, int ofs, const unsigned char *str)
{
    unsigned short *ucs;
    font_lock(current_vp->font, true);
    struct font* pf = font_get(current_vp->font);
    int vp_flags = current_vp->flags;
    int rtl_next_non_diac_width, last_non_diacritic_width;

    if ((vp_flags & VP_FLAG_ALIGNMENT_MASK) != 0)
    {
        int w;

        LCDFN(getstringsize)(str, &w, NULL);
        /* center takes precedence */
        if (vp_flags & VP_FLAG_ALIGN_CENTER)
        {
            x = ((current_vp->width - w)/ 2) + x;
            if (x < 0)
                x = 0;
        }
        else
        {
            x = current_vp->width - w - x;
            x += ofs;
            ofs = 0;
        }
    }

    rtl_next_non_diac_width = 0;
    last_non_diacritic_width = 0;
    /* Mark diacritic and rtl flags for each character */
    for (ucs = bidi_l2v(str, 1); *ucs; ucs++)
    {
        bool is_rtl, is_diac;
        const unsigned char *bits;
        int width, base_width, drawmode = 0, base_ofs = 0;
        const unsigned short next_ch = ucs[1];

        if (x >= current_vp->width)
            break;

        is_diac = is_diacritic(*ucs, &is_rtl);

        /* Get proportional width and glyph bits */
        width = font_get_width(pf, *ucs);

        /* Calculate base width */
        if (is_rtl)
        {
            /* Forward-seek the next non-diacritic character for base width */
            if (is_diac)
            {
                if (!rtl_next_non_diac_width)
                {
                    const unsigned short *u;

                    /* Jump to next non-diacritic char, and calc its width */
                    for (u = &ucs[1]; *u && is_diacritic(*u, NULL); u++);

                    rtl_next_non_diac_width = *u ?  font_get_width(pf, *u) : 0;
                }
                base_width = rtl_next_non_diac_width;
            }
            else
            {
                rtl_next_non_diac_width = 0; /* Mark */
                base_width = width;
            }
        }
        else
        {
            if (!is_diac)
                last_non_diacritic_width = width;

            base_width = last_non_diacritic_width;
        }

        if (ofs > width)
        {
            ofs -= width;
            continue;
        }

        if (is_diac)
        {
            /* XXX: Suggested by amiconn:
             * This will produce completely wrong results if the original
             * drawmode is DRMODE_COMPLEMENT. We need to pre-render the current
             * character with all its diacritics at least (in mono) and then
             * finally draw that. And we'll need an extra buffer that can hold
             * one char's bitmap. Basically we can't just change the draw mode
             * to something else irrespective of the original mode and expect
             * the result to look as intended and with DRMODE_COMPLEMENT (which
             * means XORing pixels), overdrawing this way will cause odd results
             * if the diacritics and the base char both have common pixels set.
             * So we need to combine the char and its diacritics in a temp
             * buffer using OR, and then draw the final bitmap instead of the
             * chars, without touching the drawmode
             **/
            drawmode = current_vp->drawmode;
            current_vp->drawmode = DRMODE_FG;

            base_ofs = (base_width - width) / 2;
        }

        bits = font_get_bits(pf, *ucs);

#if defined(MAIN_LCD) && defined(HAVE_LCD_COLOR)
        if (pf->depth)
            lcd_alpha_bitmap_part(bits, ofs, 0, width, x + base_ofs, y,
                                  width - ofs, pf->height);
        else
#endif
            LCDFN(mono_bitmap_part)(bits, ofs, 0, width, x + base_ofs,
                                    y, width - ofs, pf->height);
        if (is_diac)
        {
            current_vp->drawmode = drawmode;
        }

        if (next_ch)
        {
            bool next_is_rtl;
            bool next_is_diacritic = is_diacritic(next_ch, &next_is_rtl);

            /* Increment if:
             *  LTR: Next char is not diacritic,
             *  RTL: Current char is non-diacritic and next char is diacritic */
            if ((is_rtl && !is_diac) ||
                    (!is_rtl && (!next_is_diacritic || next_is_rtl)))
            {
                x += base_width - ofs;
                ofs = 0;
            }
        }
    }
    font_lock(current_vp->font, false);
}

/* put a string at a given pixel position */
void LCDFN(putsxy)(int x, int y, const unsigned char *str)
{
    LCDFN(putsxyofs)(x, y, 0, str);
}

/* Formatting version of LCDFN(putsxy) */
void LCDFN(putsxyf)(int x, int y, const unsigned char *fmt, ...)
{
    va_list ap;
    char buf[256];
    va_start(ap, fmt);
    vsnprintf(buf, sizeof (buf), fmt, ap);
    va_end(ap);
    LCDFN(putsxy)(x, y, buf);
}

static void LCDFN(putsxyofs_style)(int xpos, int ypos,
                                   const unsigned char *str, int style,
                                   int h, int offset)
{
    int lastmode = current_vp->drawmode;
    int text_ypos = ypos;
    int line_height = font_get(current_vp->font)->height;
    text_ypos += h/2 - line_height/2; /* center the text in the line */
#if defined(MAIN_LCD) && defined(HAVE_LCD_COLOR)
    int oldfgcolor = current_vp->fg_pattern;
    int oldbgcolor = current_vp->bg_pattern;
    current_vp->drawmode = DRMODE_SOLID | ((style & STYLE_INVERT) ?
                                           DRMODE_INVERSEVID : 0);
    if (style & STYLE_COLORED) {
        if (current_vp->drawmode == DRMODE_SOLID)
            current_vp->fg_pattern = style & STYLE_COLOR_MASK;
        else
            current_vp->bg_pattern = style & STYLE_COLOR_MASK;
    }
    current_vp->drawmode ^= DRMODE_INVERSEVID;
    if (style & STYLE_GRADIENT) {
        current_vp->drawmode = DRMODE_FG;
        lcd_gradient_rect(xpos, current_vp->width, ypos, h,
                          NUMLN_UNPACK(style), CURLN_UNPACK(style));
        current_vp->fg_pattern = current_vp->lst_pattern;
    }
    else if (style & STYLE_COLORBAR) {
        current_vp->drawmode = DRMODE_FG;
        current_vp->fg_pattern = current_vp->lss_pattern;
        lcd_fillrect(xpos, ypos, current_vp->width - xpos, h);
        current_vp->fg_pattern = current_vp->lst_pattern;
    }
    else {
        lcd_fillrect(xpos, ypos, current_vp->width - xpos, h);
        current_vp->drawmode = (style & STYLE_INVERT) ?
        (DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID;
    }
    if (str[0])
        lcd_putsxyofs(xpos, text_ypos, offset, str);
    current_vp->fg_pattern = oldfgcolor;
    current_vp->bg_pattern = oldbgcolor;
#else
    current_vp->drawmode = DRMODE_SOLID | ((style & STYLE_INVERT) ?
                                           0 : DRMODE_INVERSEVID);
    LCDFN(fillrect)(xpos, ypos, current_vp->width - xpos, h);
    current_vp->drawmode ^= DRMODE_INVERSEVID;
    if (str[0])
        LCDFN(putsxyofs)(xpos, text_ypos, offset, str);
#endif
    current_vp->drawmode = lastmode;
}

/*** Line oriented text output ***/

/* put a string at a given char position */
void LCDFN(puts_style_xyoffset)(int x, int y, const unsigned char *str,
                              int style, int x_offset, int y_offset)
{
    int xpos, ypos, h;
    LCDFN(scroll_stop_line)(current_vp, y);
    if(!str)
        return;

    h = current_vp->line_height ?: (int)font_get(current_vp->font)->height;
    xpos = x * LCDFN(getstringsize)(" ", NULL, NULL);
    ypos = y * h + y_offset;
    LCDFN(putsxyofs_style)(xpos, ypos, str, style, h, x_offset);
}

void LCDFN(puts_style_offset)(int x, int y, const unsigned char *str,
                              int style, int x_offset)
{
    LCDFN(puts_style_xyoffset)(x, y, str, style, x_offset, 0);
}

void LCDFN(puts)(int x, int y, const unsigned char *str)
{
    LCDFN(puts_style_offset)(x, y, str, STYLE_DEFAULT, 0);
}

/* Formatting version of LCDFN(puts) */
void LCDFN(putsf)(int x, int y, const unsigned char *fmt, ...)
{
    va_list ap;
    char buf[256];
    va_start(ap, fmt);
    vsnprintf(buf, sizeof (buf), fmt, ap);
    va_end(ap);
    LCDFN(puts)(x, y, buf);
}

void LCDFN(puts_style)(int x, int y, const unsigned char *str, int style)
{
    LCDFN(puts_style_offset)(x, y, str, style, 0);
}

void LCDFN(puts_offset)(int x, int y, const unsigned char *str, int offset)
{
    LCDFN(puts_style_offset)(x, y, str, STYLE_DEFAULT, offset);
}

/*** scrolling ***/

void LCDFN(puts_scroll_style_xyoffset)(int x, int y, const unsigned char *string,
                                     int style, int x_offset, int y_offset)
{
    struct scrollinfo* s;
    char *end;
    int w, h;
    int len;

    if ((unsigned)y >= (unsigned)current_vp->height)
        return;

    /* remove any previously scrolling line at the same location */
    LCDFN(scroll_stop_line)(current_vp, y);

    if (LCDFN(scroll_info).lines >= LCDM(SCROLLABLE_LINES)) return;
    if (!string)
        return;
    LCDFN(puts_style_xyoffset)(x, y, string, style, x_offset, y_offset);

    LCDFN(getstringsize)(string, &w, &h);

    if (current_vp->width - x * 8 >= w)
        return;

    /* prepare scroll line */
    s = &LCDFN(scroll_info).scroll[LCDFN(scroll_info).lines];
    s->start_tick = current_tick + LCDFN(scroll_info).delay;
    s->style = style;

    strlcpy(s->line, string, sizeof s->line);

    /* get width */
    s->width = LCDFN(getstringsize)(s->line, &w, &h);

    /* scroll bidirectional or forward only depending on the string
       width */
    if ( LCDFN(scroll_info).bidir_limit ) {
        s->bidir = s->width < (current_vp->width) *
            (100 + LCDFN(scroll_info).bidir_limit) / 100;
    }
    else
        s->bidir = false;

    if (!s->bidir) { /* add spaces if scrolling in the round */
        strlcat(s->line, "   ", sizeof s->line);
        /* get new width incl. spaces */
        s->width = LCDFN(getstringsize)(s->line, &w, &h);
    }

    end = strchr(s->line, '\0');
    len = sizeof s->line - (end - s->line);
    strlcpy(end, string, MIN(current_vp->width/2, len));

    s->vp = current_vp;
    s->y = y;
    s->offset = x_offset;
    s->startx = x * LCDFN(getstringsize)(" ", NULL, NULL);
    s->y_offset = y_offset;
    s->backward = false;

    LCDFN(scroll_info).lines++;
}

void LCDFN(puts_scroll)(int x, int y, const unsigned char *string)
{
    LCDFN(puts_scroll_style)(x, y, string, STYLE_DEFAULT);
}

void LCDFN(puts_scroll_style)(int x, int y, const unsigned char *string,
                              int style)
{
     LCDFN(puts_scroll_style_offset)(x, y, string, style, 0);
}

void LCDFN(puts_scroll_offset)(int x, int y, const unsigned char *string,
                               int offset)
{
     LCDFN(puts_scroll_style_offset)(x, y, string, STYLE_DEFAULT, offset);
}

void LCDFN(scroll_fn)(void)
{
    struct scrollinfo* s;
    int index;
    int xpos, ypos, height;
    struct viewport* old_vp = current_vp;
    bool makedelay;

    for ( index = 0; index < LCDFN(scroll_info).lines; index++ ) {
        s = &LCDFN(scroll_info).scroll[index];

        /* check pause */
        if (TIME_BEFORE(current_tick, s->start_tick))
            continue;

        LCDFN(set_viewport)(s->vp);
        height = s->vp->line_height ?: (int)font_get(s->vp->font)->height;

        if (s->backward)
            s->offset -= LCDFN(scroll_info).step;
        else
            s->offset += LCDFN(scroll_info).step;

        xpos = s->startx;
        ypos = s->y * height + s->y_offset;

        makedelay = false;
        if (s->bidir) { /* scroll bidirectional */
            if (s->offset <= 0) {
                /* at beginning of line */
                s->offset = 0;
                s->backward = false;
                makedelay = true;
            }
            else if (s->offset >= s->width - (current_vp->width - xpos)) {
                /* at end of line */
                s->offset = s->width - (current_vp->width - xpos);
                s->backward = true;
                makedelay = true;
            }
        }
        else {
            /* scroll forward the whole time */
            if (s->offset >= s->width) {
                s->offset = 0;
                makedelay = true;
            }
        }

        if (makedelay)
            s->start_tick = current_tick + LCDFN(scroll_info).delay +
                    LCDFN(scroll_info).ticks;

        LCDFN(putsxyofs_style)(xpos, ypos, s->line, s->style, height, s->offset);
        LCDFN(update_viewport_rect)(xpos, ypos, current_vp->width-xpos, height);
    }
    LCDFN(set_viewport)(old_vp);
}

void LCDFN(puts_scroll_style_offset)(int x, int y, const unsigned char *string,
                                     int style, int x_offset)
{
    LCDFN(puts_scroll_style_xyoffset)(x, y, string, style, x_offset, 0);
}