summaryrefslogtreecommitdiffstats
path: root/screen_ui.cpp
blob: 76793350a67f36a1f9580a8e0dbe8518ae6bb574 (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
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
/*
 * Copyright (C) 2011 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 <errno.h>
#include <fcntl.h>
#include <linux/input.h>
#include <pthread.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>

#include <vector>

#include "common.h"
#include "device.h"
#include "minui/minui.h"
#include "screen_ui.h"
#include "ui.h"

static int char_width;
static int char_height;

// Return the current time as a double (including fractions of a second).
static double now() {
    struct timeval tv;
    gettimeofday(&tv, nullptr);
    return tv.tv_sec + tv.tv_usec / 1000000.0;
}

ScreenRecoveryUI::ScreenRecoveryUI() :
    currentIcon(NONE),
    installingFrame(0),
    locale(nullptr),
    rtl_locale(false),
    progressBarType(EMPTY),
    progressScopeStart(0),
    progressScopeSize(0),
    progress(0),
    pagesIdentical(false),
    text(nullptr),
    text_cols(0),
    text_rows(0),
    text_col(0),
    text_row(0),
    text_top(0),
    show_text(false),
    show_text_ever(false),
    menu(nullptr),
    show_menu(false),
    menu_top(0),
    menu_items(0),
    menu_sel(0),
    animation_fps(20),
    installing_frames(-1),
    stage(-1),
    max_stage(-1) {

    for (int i = 0; i < 5; i++) {
        backgroundIcon[i] = nullptr;
    }
    pthread_mutex_init(&updateMutex, nullptr);
}

// Clear the screen and draw the currently selected background icon (if any).
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::draw_background_locked(Icon icon) {
    pagesIdentical = false;
    gr_color(0, 0, 0, 255);
    gr_clear();

    if (icon) {
        gr_surface surface = backgroundIcon[icon];
        if (icon == INSTALLING_UPDATE || icon == ERASING) {
            surface = installation[installingFrame];
        }
        gr_surface text_surface = backgroundText[icon];

        int iconWidth = gr_get_width(surface);
        int iconHeight = gr_get_height(surface);
        int textWidth = gr_get_width(text_surface);
        int textHeight = gr_get_height(text_surface);
        int stageHeight = gr_get_height(stageMarkerEmpty);

        int sh = (max_stage >= 0) ? stageHeight : 0;

        iconX = (gr_fb_width() - iconWidth) / 2;
        iconY = (gr_fb_height() - (iconHeight+textHeight+40+sh)) / 2;

        int textX = (gr_fb_width() - textWidth) / 2;
        int textY = ((gr_fb_height() - (iconHeight+textHeight+40+sh)) / 2) + iconHeight + 40;

        gr_blit(surface, 0, 0, iconWidth, iconHeight, iconX, iconY);
        if (stageHeight > 0) {
            int sw = gr_get_width(stageMarkerEmpty);
            int x = (gr_fb_width() - max_stage * gr_get_width(stageMarkerEmpty)) / 2;
            int y = iconY + iconHeight + 20;
            for (int i = 0; i < max_stage; ++i) {
                gr_blit((i < stage) ? stageMarkerFill : stageMarkerEmpty,
                        0, 0, sw, stageHeight, x, y);
                x += sw;
            }
        }

        gr_color(255, 255, 255, 255);
        gr_texticon(textX, textY, text_surface);
    }
}

// Draw the progress bar (if any) on the screen.  Does not flip pages.
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::draw_progress_locked() {
    if (currentIcon == ERROR) return;

    if (currentIcon == INSTALLING_UPDATE || currentIcon == ERASING) {
        gr_surface icon = installation[installingFrame];
        gr_blit(icon, 0, 0, gr_get_width(icon), gr_get_height(icon), iconX, iconY);
    }

    if (progressBarType != EMPTY) {
        int iconHeight = gr_get_height(backgroundIcon[INSTALLING_UPDATE]);
        int width = gr_get_width(progressBarEmpty);
        int height = gr_get_height(progressBarEmpty);

        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 (progressBarType == DETERMINATE) {
            float p = progressScopeStart + progress * progressScopeSize;
            int pos = (int) (p * width);

            if (rtl_locale) {
                // Fill the progress bar from right to left.
                if (pos > 0) {
                    gr_blit(progressBarFill, width-pos, 0, pos, height, dx+width-pos, dy);
                }
                if (pos < width-1) {
                    gr_blit(progressBarEmpty, 0, 0, width-pos, height, dx, dy);
                }
            } else {
                // Fill the progress bar from left to right.
                if (pos > 0) {
                    gr_blit(progressBarFill, 0, 0, pos, height, dx, dy);
                }
                if (pos < width-1) {
                    gr_blit(progressBarEmpty, pos, 0, width-pos, height, dx+pos, dy);
                }
            }
        }
    }
}

void ScreenRecoveryUI::SetColor(UIElement e) {
    switch (e) {
        case HEADER:
            gr_color(247, 0, 6, 255);
            break;
        case MENU:
        case MENU_SEL_BG:
            gr_color(0, 106, 157, 255);
            break;
        case MENU_SEL_BG_ACTIVE:
            gr_color(0, 156, 100, 255);
            break;
        case MENU_SEL_FG:
            gr_color(255, 255, 255, 255);
            break;
        case LOG:
            gr_color(249, 194, 0, 255);
            break;
        case TEXT_FILL:
            gr_color(0, 0, 0, 160);
            break;
        default:
            gr_color(255, 255, 255, 255);
            break;
    }
}

void ScreenRecoveryUI::DrawHorizontalRule(int* y) {
    SetColor(MENU);
    *y += 4;
    gr_fill(0, *y, gr_fb_width(), *y + 2);
    *y += 8;
}

// Redraw everything on the screen.  Does not flip pages.
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::draw_screen_locked() {
    if (!show_text) {
        draw_background_locked(currentIcon);
        draw_progress_locked();
    } else {
        gr_color(0, 0, 0, 255);
        gr_clear();

        int y = 0;
        if (show_menu) {
            SetColor(HEADER);

            for (int i = 0; i < menu_top + menu_items; ++i) {
                if (i == menu_top) DrawHorizontalRule(&y);

                if (i == menu_top + menu_sel) {
                    // draw the highlight bar
                    SetColor(IsLongPress() ? MENU_SEL_BG_ACTIVE : MENU_SEL_BG);
                    gr_fill(0, y-2, gr_fb_width(), y+char_height+2);
                    // white text of selected item
                    SetColor(MENU_SEL_FG);
                    if (menu[i][0]) gr_text(4, y, menu[i], 1);
                    SetColor(MENU);
                } else {
                    if (menu[i][0]) gr_text(4, y, menu[i], i < menu_top);
                }
                y += char_height+4;
            }

            DrawHorizontalRule(&y);
        }

        SetColor(LOG);

        // display from the bottom up, until we hit the top of the
        // screen, the bottom of the menu, or we've displayed the
        // entire text buffer.
        int row = (text_top+text_rows-1) % text_rows;
        size_t count = 0;
        for (int ty = gr_fb_height() - char_height;
             ty >= y && count < text_rows;
             ty -= char_height, ++count) {
            gr_text(0, ty, text[row], 0);
            --row;
            if (row < 0) row = text_rows-1;
        }
    }
}

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

// Updates only the progress bar, if possible, otherwise redraws the screen.
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::update_progress_locked() {
    if (show_text || !pagesIdentical) {
        draw_screen_locked();    // Must redraw the whole screen
        pagesIdentical = true;
    } else {
        draw_progress_locked();  // Draw only the progress bar and overlays
    }
    gr_flip();
}

// Keeps the progress bar updated, even when the process is otherwise busy.
void* ScreenRecoveryUI::ProgressThreadStartRoutine(void* data) {
    reinterpret_cast<ScreenRecoveryUI*>(data)->ProgressThreadLoop();
    return nullptr;
}

void ScreenRecoveryUI::ProgressThreadLoop() {
    double interval = 1.0 / animation_fps;
    while (true) {
        double start = now();
        pthread_mutex_lock(&updateMutex);

        int redraw = 0;

        // update the installation animation, if active
        // skip this if we have a text overlay (too expensive to update)
        if ((currentIcon == INSTALLING_UPDATE || currentIcon == ERASING) &&
            installing_frames > 0 && !show_text) {
            installingFrame = (installingFrame + 1) % installing_frames;
            redraw = 1;
        }

        // move the progress bar forward on timed intervals, if configured
        int duration = progressScopeDuration;
        if (progressBarType == DETERMINATE && duration > 0) {
            double elapsed = now() - progressScopeTime;
            float p = 1.0 * elapsed / duration;
            if (p > 1.0) p = 1.0;
            if (p > progress) {
                progress = p;
                redraw = 1;
            }
        }

        if (redraw) update_progress_locked();

        pthread_mutex_unlock(&updateMutex);
        double end = now();
        // minimum of 20ms delay between frames
        double delay = interval - (end-start);
        if (delay < 0.02) delay = 0.02;
        usleep((long)(delay * 1000000));
    }
}

void ScreenRecoveryUI::LoadBitmap(const char* filename, gr_surface* surface) {
    int result = res_create_display_surface(filename, surface);
    if (result < 0) {
        LOGE("missing bitmap %s\n(Code %d)\n", filename, result);
    }
}

void ScreenRecoveryUI::LoadBitmapArray(const char* filename, int* frames, gr_surface** surface) {
    int result = res_create_multi_display_surface(filename, frames, surface);
    if (result < 0) {
        LOGE("missing bitmap %s\n(Code %d)\n", filename, result);
    }
}

void ScreenRecoveryUI::LoadLocalizedBitmap(const char* filename, gr_surface* surface) {
    int result = res_create_localized_alpha_surface(filename, locale, surface);
    if (result < 0) {
        LOGE("missing bitmap %s\n(Code %d)\n", filename, result);
    }
}

static char** Alloc2d(size_t rows, size_t cols) {
    char** result = new char*[rows];
    for (size_t i = 0; i < rows; ++i) {
        result[i] = new char[cols];
        memset(result[i], 0, cols);
    }
    return result;
}

void ScreenRecoveryUI::Init() {
    gr_init();

    gr_font_size(&char_width, &char_height);
    text_rows = gr_fb_height() / char_height;
    text_cols = gr_fb_width() / char_width;

    text = Alloc2d(text_rows, text_cols + 1);
    menu = Alloc2d(text_rows, text_cols + 1);

    text_col = text_row = 0;
    text_top = 1;

    backgroundIcon[NONE] = nullptr;
    LoadBitmapArray("icon_installing", &installing_frames, &installation);
    backgroundIcon[INSTALLING_UPDATE] = installing_frames ? installation[0] : nullptr;
    backgroundIcon[ERASING] = backgroundIcon[INSTALLING_UPDATE];
    LoadBitmap("icon_error", &backgroundIcon[ERROR]);
    backgroundIcon[NO_COMMAND] = backgroundIcon[ERROR];

    LoadBitmap("progress_empty", &progressBarEmpty);
    LoadBitmap("progress_fill", &progressBarFill);
    LoadBitmap("stage_empty", &stageMarkerEmpty);
    LoadBitmap("stage_fill", &stageMarkerFill);

    LoadLocalizedBitmap("installing_text", &backgroundText[INSTALLING_UPDATE]);
    LoadLocalizedBitmap("erasing_text", &backgroundText[ERASING]);
    LoadLocalizedBitmap("no_command_text", &backgroundText[NO_COMMAND]);
    LoadLocalizedBitmap("error_text", &backgroundText[ERROR]);

    pthread_create(&progress_thread_, nullptr, ProgressThreadStartRoutine, this);

    RecoveryUI::Init();
}

void ScreenRecoveryUI::SetLocale(const char* new_locale) {
    if (new_locale) {
        this->locale = new_locale;
        char* lang = strdup(locale);
        for (char* p = lang; *p; ++p) {
            if (*p == '_') {
                *p = '\0';
                break;
            }
        }

        // A bit cheesy: keep an explicit list of supported languages
        // that are RTL.
        if (strcmp(lang, "ar") == 0 ||   // Arabic
            strcmp(lang, "fa") == 0 ||   // Persian (Farsi)
            strcmp(lang, "he") == 0 ||   // Hebrew (new language code)
            strcmp(lang, "iw") == 0 ||   // Hebrew (old language code)
            strcmp(lang, "ur") == 0) {   // Urdu
            rtl_locale = true;
        }
        free(lang);
    } else {
        new_locale = nullptr;
    }
}

void ScreenRecoveryUI::SetBackground(Icon icon) {
    pthread_mutex_lock(&updateMutex);

    currentIcon = icon;
    update_screen_locked();

    pthread_mutex_unlock(&updateMutex);
}

void ScreenRecoveryUI::SetProgressType(ProgressType type) {
    pthread_mutex_lock(&updateMutex);
    if (progressBarType != type) {
        progressBarType = type;
    }
    progressScopeStart = 0;
    progressScopeSize = 0;
    progress = 0;
    update_progress_locked();
    pthread_mutex_unlock(&updateMutex);
}

void ScreenRecoveryUI::ShowProgress(float portion, float seconds) {
    pthread_mutex_lock(&updateMutex);
    progressBarType = DETERMINATE;
    progressScopeStart += progressScopeSize;
    progressScopeSize = portion;
    progressScopeTime = now();
    progressScopeDuration = seconds;
    progress = 0;
    update_progress_locked();
    pthread_mutex_unlock(&updateMutex);
}

void ScreenRecoveryUI::SetProgress(float fraction) {
    pthread_mutex_lock(&updateMutex);
    if (fraction < 0.0) fraction = 0.0;
    if (fraction > 1.0) fraction = 1.0;
    if (progressBarType == DETERMINATE && fraction > progress) {
        // Skip updates that aren't visibly different.
        int width = gr_get_width(progressBarEmpty);
        float scale = width * progressScopeSize;
        if ((int) (progress * scale) != (int) (fraction * scale)) {
            progress = fraction;
            update_progress_locked();
        }
    }
    pthread_mutex_unlock(&updateMutex);
}

void ScreenRecoveryUI::SetStage(int current, int max) {
    pthread_mutex_lock(&updateMutex);
    stage = current;
    max_stage = max;
    pthread_mutex_unlock(&updateMutex);
}

void ScreenRecoveryUI::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);

    pthread_mutex_lock(&updateMutex);
    if (text_rows > 0 && text_cols > 0) {
        for (const char* 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(&updateMutex);
}

void ScreenRecoveryUI::PutChar(char ch) {
    pthread_mutex_lock(&updateMutex);
    if (ch != '\n') text[text_row][text_col++] = ch;
    if (ch == '\n' || text_col >= text_cols) {
        text_col = 0;
        ++text_row;
    }
    pthread_mutex_unlock(&updateMutex);
}

void ScreenRecoveryUI::ClearText() {
    pthread_mutex_lock(&updateMutex);
    text_col = 0;
    text_row = 0;
    text_top = 1;
    for (size_t i = 0; i < text_rows; ++i) {
        memset(text[i], 0, text_cols + 1);
    }
    pthread_mutex_unlock(&updateMutex);
}

void ScreenRecoveryUI::ShowFile(FILE* fp) {
    std::vector<long> offsets;
    offsets.push_back(ftell(fp));
    ClearText();

    struct stat sb;
    fstat(fileno(fp), &sb);

    bool show_prompt = false;
    while (true) {
        if (show_prompt) {
            Print("--(%d%% of %d bytes)--",
                  static_cast<int>(100 * (double(ftell(fp)) / double(sb.st_size))),
                  static_cast<int>(sb.st_size));
            Redraw();
            while (show_prompt) {
                show_prompt = false;
                int key = WaitKey();
                if (key == KEY_POWER || key == KEY_ENTER) {
                    return;
                } else if (key == KEY_UP || key == KEY_VOLUMEUP) {
                    if (offsets.size() <= 1) {
                        show_prompt = true;
                    } else {
                        offsets.pop_back();
                        fseek(fp, offsets.back(), SEEK_SET);
                    }
                } else {
                    if (feof(fp)) {
                        return;
                    }
                    offsets.push_back(ftell(fp));
                }
            }
            ClearText();
        }

        int ch = getc(fp);
        if (ch == EOF) {
            text_row = text_top = text_rows - 2;
            show_prompt = true;
        } else {
            PutChar(ch);
            if (text_col == 0 && text_row >= text_rows - 2) {
                text_top = text_row;
                show_prompt = true;
            }
        }
    }
}

void ScreenRecoveryUI::ShowFile(const char* filename) {
    FILE* fp = fopen_path(filename, "re");
    if (fp == nullptr) {
        Print("  Unable to open %s: %s\n", filename, strerror(errno));
        return;
    }
    ShowFile(fp);
    fclose(fp);
}

void ScreenRecoveryUI::StartMenu(const char* const * headers, const char* const * items,
                                 int initial_selection) {
    pthread_mutex_lock(&updateMutex);
    if (text_rows > 0 && text_cols > 0) {
        size_t i;
        for (i = 0; i < text_rows; ++i) {
            if (headers[i] == nullptr) 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] == nullptr) break;
            strncpy(menu[i], items[i-menu_top], text_cols-1);
            menu[i][text_cols-1] = '\0';
        }
        menu_items = i - menu_top;
        show_menu = true;
        menu_sel = initial_selection;
        update_screen_locked();
    }
    pthread_mutex_unlock(&updateMutex);
}

int ScreenRecoveryUI::SelectMenu(int sel) {
    pthread_mutex_lock(&updateMutex);
    if (show_menu) {
        int old_sel = menu_sel;
        menu_sel = sel;

        // Wrap at top and bottom.
        if (menu_sel < 0) menu_sel = menu_items - 1;
        if (menu_sel >= menu_items) menu_sel = 0;

        sel = menu_sel;
        if (menu_sel != old_sel) update_screen_locked();
    }
    pthread_mutex_unlock(&updateMutex);
    return sel;
}

void ScreenRecoveryUI::EndMenu() {
    pthread_mutex_lock(&updateMutex);
    if (show_menu && text_rows > 0 && text_cols > 0) {
        show_menu = false;
        update_screen_locked();
    }
    pthread_mutex_unlock(&updateMutex);
}

bool ScreenRecoveryUI::IsTextVisible() {
    pthread_mutex_lock(&updateMutex);
    int visible = show_text;
    pthread_mutex_unlock(&updateMutex);
    return visible;
}

bool ScreenRecoveryUI::WasTextEverVisible() {
    pthread_mutex_lock(&updateMutex);
    int ever_visible = show_text_ever;
    pthread_mutex_unlock(&updateMutex);
    return ever_visible;
}

void ScreenRecoveryUI::ShowText(bool visible) {
    pthread_mutex_lock(&updateMutex);
    show_text = visible;
    if (show_text) show_text_ever = true;
    update_screen_locked();
    pthread_mutex_unlock(&updateMutex);
}

void ScreenRecoveryUI::Redraw() {
    pthread_mutex_lock(&updateMutex);
    update_screen_locked();
    pthread_mutex_unlock(&updateMutex);
}

void ScreenRecoveryUI::KeyLongPress(int) {
    // Redraw so that if we're in the menu, the highlight
    // will change color to indicate a successful long press.
    Redraw();
}