summaryrefslogtreecommitdiffstats
path: root/ui.c
blob: 3bb2c2a9bab59e7143ab6c5314d73d1484356f5a (plain) (blame)
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
504
505
506
507
/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <linux/input.h>
#include <pthread.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/reboot.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>

#include "common.h"
#include "minui/minui.h"
#include "recovery_ui.h"

#define MAX_COLS 64
#define MAX_ROWS 32

#define CHAR_WIDTH 10
#define CHAR_HEIGHT 18

#define PROGRESSBAR_INDETERMINATE_STATES 6
#define PROGRESSBAR_INDETERMINATE_FPS 15

static pthread_mutex_t gUpdateMutex = PTHREAD_MUTEX_INITIALIZER;
static gr_surface gBackgroundIcon[NUM_BACKGROUND_ICONS];
static gr_surface gProgressBarIndeterminate[PROGRESSBAR_INDETERMINATE_STATES];
static gr_surface gProgressBarEmpty;
static gr_surface gProgressBarFill;

static const struct { gr_surface* surface; const char *name; } BITMAPS[] = {
    { &gBackgroundIcon[BACKGROUND_ICON_INSTALLING], "icon_installing" },
    { &gBackgroundIcon[BACKGROUND_ICON_ERROR],      "icon_error" },
    { &gProgressBarIndeterminate[0],    "indeterminate1" },
    { &gProgressBarIndeterminate[1],    "indeterminate2" },
    { &gProgressBarIndeterminate[2],    "indeterminate3" },
    { &gProgressBarIndeterminate[3],    "indeterminate4" },
    { &gProgressBarIndeterminate[4],    "indeterminate5" },
    { &gProgressBarIndeterminate[5],    "indeterminate6" },
    { &gProgressBarEmpty,               "progress_empty" },
    { &gProgressBarFill,                "progress_fill" },
    { NULL,                             NULL },
};

static gr_surface gCurrentIcon = NULL;

static enum ProgressBarType {
    PROGRESSBAR_TYPE_NONE,
    PROGRESSBAR_TYPE_INDETERMINATE,
    PROGRESSBAR_TYPE_NORMAL,
} gProgressBarType = PROGRESSBAR_TYPE_NONE;

// Progress bar scope of current operation
static float gProgressScopeStart = 0, gProgressScopeSize = 0, gProgress = 0;
static time_t gProgressScopeTime, gProgressScopeDuration;

// Set to 1 when both graphics pages are the same (except for the progress bar)
static int gPagesIdentical = 0;

// Log text overlay, displayed when a magic key is pressed
static char text[MAX_ROWS][MAX_COLS];
static int text_cols = 0, text_rows = 0;
static int text_col = 0, text_row = 0, text_top = 0;
static int show_text = 0;

static char menu[MAX_ROWS][MAX_COLS];
static int show_menu = 0;
static int menu_top = 0, menu_items = 0, menu_sel = 0;

// Key event input queue
static pthread_mutex_t key_queue_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t key_queue_cond = PTHREAD_COND_INITIALIZER;
static int key_queue[256], key_queue_len = 0;
static volatile char key_pressed[KEY_MAX + 1];

// Clear the screen and draw the currently selected background icon (if any).
// Should only be called with gUpdateMutex locked.
static void draw_background_locked(gr_surface icon)
{
    gPagesIdentical = 0;
    gr_color(0, 0, 0, 255);
    gr_fill(0, 0, gr_fb_width(), gr_fb_height());

    if (icon) {
        int iconWidth = gr_get_width(icon);
        int iconHeight = gr_get_height(icon);
        int iconX = (gr_fb_width() - iconWidth) / 2;
        int iconY = (gr_fb_height() - iconHeight) / 2;
        gr_blit(icon, 0, 0, iconWidth, iconHeight, iconX, iconY);
    }
}

// Draw the progress bar (if any) on the screen.  Does not flip pages.
// Should only be called with gUpdateMutex locked.
static void draw_progress_locked()
{
    if (gProgressBarType == PROGRESSBAR_TYPE_NONE) return;

    int iconHeight = gr_get_height(gBackgroundIcon[BACKGROUND_ICON_INSTALLING]);
    int width = gr_get_width(gProgressBarEmpty);
    int height = gr_get_height(gProgressBarEmpty);

    int dx = (gr_fb_width() - width)/2;
    int dy = (3*gr_fb_height() + iconHeight - 2*height)/4;

    // Erase behind the progress bar (in case this was a progress-only update)
    gr_color(0, 0, 0, 255);
    gr_fill(dx, dy, width, height);

    if (gProgressBarType == PROGRESSBAR_TYPE_NORMAL) {
        float progress = gProgressScopeStart + gProgress * gProgressScopeSize;
        int pos = (int) (progress * width);

        if (pos > 0) {
          gr_blit(gProgressBarFill, 0, 0, pos, height, dx, dy);
        }
        if (pos < width-1) {
          gr_blit(gProgressBarEmpty, pos, 0, width-pos, height, dx+pos, dy);
        }
    }

    if (gProgressBarType == PROGRESSBAR_TYPE_INDETERMINATE) {
        static int frame = 0;
        gr_blit(gProgressBarIndeterminate[frame], 0, 0, width, height, dx, dy);
        frame = (frame + 1) % PROGRESSBAR_INDETERMINATE_STATES;
    }
}

static void draw_text_line(int row, const char* t) {
  if (t[0] != '\0') {
    gr_text(0, (row+1)*CHAR_HEIGHT-1, t);
  }
}

// Redraw everything on the screen.  Does not flip pages.
// Should only be called with gUpdateMutex locked.
static void draw_screen_locked(void)
{
    draw_background_locked(gCurrentIcon);
    draw_progress_locked();

    if (show_text) {
        gr_color(0, 0, 0, 160);
        gr_fill(0, 0, gr_fb_width(), gr_fb_height());

        int i = 0;
        if (show_menu) {
            gr_color(64, 96, 255, 255);
            gr_fill(0, (menu_top+menu_sel) * CHAR_HEIGHT,
                    gr_fb_width(), (menu_top+menu_sel+1)*CHAR_HEIGHT+1);

            for (; i < menu_top + menu_items; ++i) {
                if (i == menu_top + menu_sel) {
                    gr_color(255, 255, 255, 255);
                    draw_text_line(i, menu[i]);
                    gr_color(64, 96, 255, 255);
                } else {
                    draw_text_line(i, menu[i]);
                }
            }
            gr_fill(0, i*CHAR_HEIGHT+CHAR_HEIGHT/2-1,
                    gr_fb_width(), i*CHAR_HEIGHT+CHAR_HEIGHT/2+1);
            ++i;
        }

        gr_color(255, 255, 0, 255);

        for (; i < text_rows; ++i) {
            draw_text_line(i, text[(i+text_top) % text_rows]);
        }
    }
}

// Redraw everything on the screen and flip the screen (make it visible).
// Should only be called with gUpdateMutex locked.
static void update_screen_locked(void)
{
    draw_screen_locked();
    gr_flip();
}

// Updates only the progress bar, if possible, otherwise redraws the screen.
// Should only be called with gUpdateMutex locked.
static void update_progress_locked(void)
{
    if (show_text || !gPagesIdentical) {
        draw_screen_locked();    // Must redraw the whole screen
        gPagesIdentical = 1;
    } else {
        draw_progress_locked();  // Draw only the progress bar
    }
    gr_flip();
}

// Keeps the progress bar updated, even when the process is otherwise busy.
static void *progress_thread(void *cookie)
{
    for (;;) {
        usleep(1000000 / PROGRESSBAR_INDETERMINATE_FPS);
        pthread_mutex_lock(&gUpdateMutex);

        // update the progress bar animation, if active
        // skip this if we have a text overlay (too expensive to update)
        if (gProgressBarType == PROGRESSBAR_TYPE_INDETERMINATE && !show_text) {
            update_progress_locked();
        }

        // move the progress bar forward on timed intervals, if configured
        int duration = gProgressScopeDuration;
        if (gProgressBarType == PROGRESSBAR_TYPE_NORMAL && duration > 0) {
            int elapsed = time(NULL) - gProgressScopeTime;
            float progress = 1.0 * elapsed / duration;
            if (progress > 1.0) progress = 1.0;
            if (progress > gProgress) {
                gProgress = progress;
                update_progress_locked();
            }
        }

        pthread_mutex_unlock(&gUpdateMutex);
    }
    return NULL;
}

// Reads input events, handles special hot keys, and adds to the key queue.
static void *input_thread(void *cookie)
{
    int rel_sum = 0;
    int fake_key = 0;
    for (;;) {
        // wait for the next key event
        struct input_event ev;
        do {
            ev_get(&ev, 0);

            if (ev.type == EV_SYN) {
                continue;
            } else if (ev.type == EV_REL) {
                if (ev.code == REL_Y) {
                    // accumulate the up or down motion reported by
                    // the trackball.  When it exceeds a threshold
                    // (positive or negative), fake an up/down
                    // key event.
                    rel_sum += ev.value;
                    if (rel_sum > 3) {
                        fake_key = 1;
                        ev.type = EV_KEY;
                        ev.code = KEY_DOWN;
                        ev.value = 1;
                        rel_sum = 0;
                    } else if (rel_sum < -3) {
                        fake_key = 1;
                        ev.type = EV_KEY;
                        ev.code = KEY_UP;
                        ev.value = 1;
                        rel_sum = 0;
                    }
                }
            } else {
                rel_sum = 0;
            }
        } while (ev.type != EV_KEY || ev.code > KEY_MAX);

        pthread_mutex_lock(&key_queue_mutex);
        if (!fake_key) {
            // our "fake" keys only report a key-down event (no
            // key-up), so don't record them in the key_pressed
            // table.
            key_pressed[ev.code] = ev.value;
        }
        fake_key = 0;
        const int queue_max = sizeof(key_queue) / sizeof(key_queue[0]);
        if (ev.value > 0 && key_queue_len < queue_max) {
            key_queue[key_queue_len++] = ev.code;
            pthread_cond_signal(&key_queue_cond);
        }
        pthread_mutex_unlock(&key_queue_mutex);

        if (ev.value > 0 && device_toggle_display(key_pressed, ev.code)) {
            pthread_mutex_lock(&gUpdateMutex);
            show_text = !show_text;
            update_screen_locked();
            pthread_mutex_unlock(&gUpdateMutex);
        }

        if (ev.value > 0 && device_reboot_now(key_pressed, ev.code)) {
            reboot(RB_AUTOBOOT);
        }
    }
    return NULL;
}

void ui_init(void)
{
    gr_init();
    ev_init();

    text_col = text_row = 0;
    text_rows = gr_fb_height() / CHAR_HEIGHT;
    if (text_rows > MAX_ROWS) text_rows = MAX_ROWS;
    text_top = 1;

    text_cols = gr_fb_width() / CHAR_WIDTH;
    if (text_cols > MAX_COLS - 1) text_cols = MAX_COLS - 1;

    int i;
    for (i = 0; BITMAPS[i].name != NULL; ++i) {
        int result = res_create_surface(BITMAPS[i].name, BITMAPS[i].surface);
        if (result < 0) {
            if (result == -2) {
                LOGI("Bitmap %s missing header\n", BITMAPS[i].name);
            } else {
                LOGE("Missing bitmap %s\n(Code %d)\n", BITMAPS[i].name, result);
            }
            *BITMAPS[i].surface = NULL;
        }
    }

    pthread_t t;
    pthread_create(&t, NULL, progress_thread, NULL);
    pthread_create(&t, NULL, input_thread, NULL);
}

void ui_set_background(int icon)
{
    pthread_mutex_lock(&gUpdateMutex);
    gCurrentIcon = gBackgroundIcon[icon];
    update_screen_locked();
    pthread_mutex_unlock(&gUpdateMutex);
}

void ui_show_indeterminate_progress()
{
    pthread_mutex_lock(&gUpdateMutex);
    if (gProgressBarType != PROGRESSBAR_TYPE_INDETERMINATE) {
        gProgressBarType = PROGRESSBAR_TYPE_INDETERMINATE;
        update_progress_locked();
    }
    pthread_mutex_unlock(&gUpdateMutex);
}

void ui_show_progress(float portion, int seconds)
{
    pthread_mutex_lock(&gUpdateMutex);
    gProgressBarType = PROGRESSBAR_TYPE_NORMAL;
    gProgressScopeStart += gProgressScopeSize;
    gProgressScopeSize = portion;
    gProgressScopeTime = time(NULL);
    gProgressScopeDuration = seconds;
    gProgress = 0;
    update_progress_locked();
    pthread_mutex_unlock(&gUpdateMutex);
}

void ui_set_progress(float fraction)
{
    pthread_mutex_lock(&gUpdateMutex);
    if (fraction < 0.0) fraction = 0.0;
    if (fraction > 1.0) fraction = 1.0;
    if (gProgressBarType == PROGRESSBAR_TYPE_NORMAL && fraction > gProgress) {
        // Skip updates that aren't visibly different.
        int width = gr_get_width(gProgressBarIndeterminate[0]);
        float scale = width * gProgressScopeSize;
        if ((int) (gProgress * scale) != (int) (fraction * scale)) {
            gProgress = fraction;
            update_progress_locked();
        }
    }
    pthread_mutex_unlock(&gUpdateMutex);
}

void ui_reset_progress()
{
    pthread_mutex_lock(&gUpdateMutex);
    gProgressBarType = PROGRESSBAR_TYPE_NONE;
    gProgressScopeStart = gProgressScopeSize = 0;
    gProgressScopeTime = gProgressScopeDuration = 0;
    gProgress = 0;
    update_screen_locked();
    pthread_mutex_unlock(&gUpdateMutex);
}

void ui_print(const char *fmt, ...)
{
    char buf[256];
    va_list ap;
    va_start(ap, fmt);
    vsnprintf(buf, 256, fmt, ap);
    va_end(ap);

    fputs(buf, stdout);

    // This can get called before ui_init(), so be careful.
    pthread_mutex_lock(&gUpdateMutex);
    if (text_rows > 0 && text_cols > 0) {
        char *ptr;
        for (ptr = buf; *ptr != '\0'; ++ptr) {
            if (*ptr == '\n' || text_col >= text_cols) {
                text[text_row][text_col] = '\0';
                text_col = 0;
                text_row = (text_row + 1) % text_rows;
                if (text_row == text_top) text_top = (text_top + 1) % text_rows;
            }
            if (*ptr != '\n') text[text_row][text_col++] = *ptr;
        }
        text[text_row][text_col] = '\0';
        update_screen_locked();
    }
    pthread_mutex_unlock(&gUpdateMutex);
}

void ui_start_menu(char** headers, char** items, int initial_selection) {
    int i;
    pthread_mutex_lock(&gUpdateMutex);
    if (text_rows > 0 && text_cols > 0) {
        for (i = 0; i < text_rows; ++i) {
            if (headers[i] == NULL) break;
            strncpy(menu[i], headers[i], text_cols-1);
            menu[i][text_cols-1] = '\0';
        }
        menu_top = i;
        for (; i < text_rows; ++i) {
            if (items[i-menu_top] == NULL) break;
            strncpy(menu[i], items[i-menu_top], text_cols-1);
            menu[i][text_cols-1] = '\0';
        }
        menu_items = i - menu_top;
        show_menu = 1;
        menu_sel = initial_selection;
        update_screen_locked();
    }
    pthread_mutex_unlock(&gUpdateMutex);
}

int ui_menu_select(int sel) {
    int old_sel;
    pthread_mutex_lock(&gUpdateMutex);
    if (show_menu > 0) {
        old_sel = menu_sel;
        menu_sel = sel;
        if (menu_sel < 0) menu_sel = 0;
        if (menu_sel >= menu_items) menu_sel = menu_items-1;
        sel = menu_sel;
        if (menu_sel != old_sel) update_screen_locked();
    }
    pthread_mutex_unlock(&gUpdateMutex);
    return sel;
}

void ui_end_menu() {
    int i;
    pthread_mutex_lock(&gUpdateMutex);
    if (show_menu > 0 && text_rows > 0 && text_cols > 0) {
        show_menu = 0;
        update_screen_locked();
    }
    pthread_mutex_unlock(&gUpdateMutex);
}

int ui_text_visible()
{
    pthread_mutex_lock(&gUpdateMutex);
    int visible = show_text;
    pthread_mutex_unlock(&gUpdateMutex);
    return visible;
}

int ui_wait_key()
{
    pthread_mutex_lock(&key_queue_mutex);
    while (key_queue_len == 0) {
        pthread_cond_wait(&key_queue_cond, &key_queue_mutex);
    }

    int key = key_queue[0];
    memcpy(&key_queue[0], &key_queue[1], sizeof(int) * --key_queue_len);
    pthread_mutex_unlock(&key_queue_mutex);
    return key;
}

int ui_key_pressed(int key)
{
    // This is a volatile static array, don't bother locking
    return key_pressed[key];
}

void ui_clear_key_queue() {
    pthread_mutex_lock(&key_queue_mutex);
    key_queue_len = 0;
    pthread_mutex_unlock(&key_queue_mutex);
}