move key processing to RecoveryUI

Move the key for handling keys from ScreenRecoveryUI to RecoveryUI, so
it can be used by devices without screens.  Remove the UIParameters
struct and replace it with some new member variables in
ScreenRecoveryUI.

Change-Id: I70094ecbc4acbf76ce44d5b5ec2036c36bdc3414

1 files changed, 40 insertions, 214 deletions

diff --git a/screen_ui.cpp b/screen_ui.cpp
index a60b046..2a8652e 100644
--- a/screen_ui.cpp
+++ b/screen_ui.cpp
@@ -29,24 +29,14 @@
 #include <unistd.h>
 
 #include "common.h"
-#include <cutils/android_reboot.h>
+#include "device.h"
 #include "minui/minui.h"
-#include "ui.h"
 #include "screen_ui.h"
-#include "device.h"
+#include "ui.h"
 
 #define CHAR_WIDTH 10
 #define CHAR_HEIGHT 18
 
-#define UI_WAIT_KEY_TIMEOUT_SEC    120
-
-UIParameters ui_parameters = {
-    6,       // indeterminate progress bar frames
-    20,      // fps
-    7,       // installation icon frames (0 == static image)
-    13, 190, // installation icon overlay offset
-};
-
 // There's only (at most) one of these objects, and global callbacks
 // (for pthread_create, and the input event system) need to find it,
 // so use a global variable.
@@ -78,11 +68,18 @@ ScreenRecoveryUI::ScreenRecoveryUI() :
     menu_top(0),
     menu_items(0),
     menu_sel(0),
-    key_queue_len(0),
-    key_last_down(-1) {
+
+    // These values are correct for the default image resources
+    // provided with the android platform.  Devices which use
+    // different resources should have a subclass of ScreenRecoveryUI
+    // that overrides Init() to set these values appropriately and
+    // then call the superclass Init().
+    animation_fps(20),
+    indeterminate_frames(6),
+    installing_frames(7),
+    install_overlay_offset_x(13),
+    install_overlay_offset_y(190) {
     pthread_mutex_init(&updateMutex, NULL);
-    pthread_mutex_init(&key_queue_mutex, NULL);
-    pthread_cond_init(&key_queue_cond, NULL);
     self = this;
 }
 
@@ -97,8 +94,7 @@ void ScreenRecoveryUI::draw_install_overlay_locked(int frame) {
     int iconWidth = gr_get_width(surface);
     int iconHeight = gr_get_height(surface);
     gr_blit(surface, 0, 0, iconWidth, iconHeight,
-            ui_parameters.install_overlay_offset_x,
-            ui_parameters.install_overlay_offset_y);
+            install_overlay_offset_x, install_overlay_offset_y);
 }
 
 // Clear the screen and draw the currently selected background icon (if any).
@@ -157,7 +153,7 @@ void ScreenRecoveryUI::draw_progress_locked()
         if (progressBarType == INDETERMINATE) {
             static int frame = 0;
             gr_blit(progressBarIndeterminate[frame], 0, 0, width, height, dx, dy);
-            frame = (frame + 1) % ui_parameters.indeterminate_frames;
+            frame = (frame + 1) % indeterminate_frames;
         }
     }
 }
@@ -229,35 +225,36 @@ void ScreenRecoveryUI::update_progress_locked()
 }
 
 // Keeps the progress bar updated, even when the process is otherwise busy.
-void* ScreenRecoveryUI::progress_thread(void *cookie)
-{
-    double interval = 1.0 / ui_parameters.update_fps;
+void* ScreenRecoveryUI::progress_thread(void *cookie) {
+    self->progress_loop();
+    return NULL;
+}
+
+void ScreenRecoveryUI::progress_loop() {
+    double interval = 1.0 / animation_fps;
     for (;;) {
         double start = now();
-        pthread_mutex_lock(&self->updateMutex);
+        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 (self->currentIcon == INSTALLING &&
-            ui_parameters.installing_frames > 0 &&
-            !self->show_text) {
-            self->installingFrame =
-                (self->installingFrame + 1) % ui_parameters.installing_frames;
+        if (currentIcon == INSTALLING && installing_frames > 0 && !show_text) {
+            installingFrame = (installingFrame + 1) % installing_frames;
             redraw = 1;
         }
 
         // update the progress bar animation, if active
         // skip this if we have a text overlay (too expensive to update)
-        if (self->progressBarType == INDETERMINATE && !self->show_text) {
+        if (progressBarType == INDETERMINATE && !show_text) {
             redraw = 1;
         }
 
         // move the progress bar forward on timed intervals, if configured
-        int duration = self->progressScopeDuration;
-        if (self->progressBarType == DETERMINATE && duration > 0) {
-            double elapsed = now() - self->progressScopeTime;
+        int duration = progressScopeDuration;
+        if (progressBarType == DETERMINATE && duration > 0) {
+            double elapsed = now() - progressScopeTime;
             float progress = 1.0 * elapsed / duration;
             if (progress > 1.0) progress = 1.0;
             if (progress > progress) {
@@ -266,117 +263,15 @@ void* ScreenRecoveryUI::progress_thread(void *cookie)
             }
         }
 
-        if (redraw) self->update_progress_locked();
+        if (redraw) update_progress_locked();
 
-        pthread_mutex_unlock(&self->updateMutex);
+        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));
     }
-    return NULL;
-}
-
-int ScreenRecoveryUI::input_callback(int fd, short revents, void* data)
-{
-    struct input_event ev;
-    int ret;
-
-    ret = ev_get_input(fd, revents, &ev);
-    if (ret)
-        return -1;
-
-    if (ev.type == EV_SYN) {
-        return 0;
-    } 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.
-            self->rel_sum += ev.value;
-            if (self->rel_sum > 3) {
-                self->process_key(KEY_DOWN, 1);   // press down key
-                self->process_key(KEY_DOWN, 0);   // and release it
-                self->rel_sum = 0;
-            } else if (self->rel_sum < -3) {
-                self->process_key(KEY_UP, 1);     // press up key
-                self->process_key(KEY_UP, 0);     // and release it
-                self->rel_sum = 0;
-            }
-        }
-    } else {
-        self->rel_sum = 0;
-    }
-
-    if (ev.type == EV_KEY && ev.code <= KEY_MAX)
-        self->process_key(ev.code, ev.value);
-
-    return 0;
-}
-
-// Process a key-up or -down event.  A key is "registered" when it is
-// pressed and then released, with no other keypresses or releases in
-// between.  Registered keys are passed to CheckKey() to see if it
-// should trigger a visibility toggle, an immediate reboot, or be
-// queued to be processed next time the foreground thread wants a key
-// (eg, for the menu).
-//
-// We also keep track of which keys are currently down so that
-// CheckKey can call IsKeyPressed to see what other keys are held when
-// a key is registered.
-//
-// updown == 1 for key down events; 0 for key up events
-void ScreenRecoveryUI::process_key(int key_code, int updown) {
-    bool register_key = false;
-
-    pthread_mutex_lock(&key_queue_mutex);
-    key_pressed[key_code] = updown;
-    if (updown) {
-        key_last_down = key_code;
-    } else {
-        if (key_last_down == key_code)
-            register_key = true;
-        key_last_down = -1;
-    }
-    pthread_mutex_unlock(&key_queue_mutex);
-
-    if (register_key) {
-        switch (CheckKey(key_code)) {
-          case RecoveryUI::TOGGLE:
-            pthread_mutex_lock(&updateMutex);
-            show_text = !show_text;
-            if (show_text) show_text_ever = true;
-            update_screen_locked();
-            pthread_mutex_unlock(&updateMutex);
-            break;
-
-          case RecoveryUI::REBOOT:
-            android_reboot(ANDROID_RB_RESTART, 0, 0);
-            break;
-
-          case RecoveryUI::ENQUEUE:
-            pthread_mutex_lock(&key_queue_mutex);
-            const int queue_max = sizeof(key_queue) / sizeof(key_queue[0]);
-            if (key_queue_len < queue_max) {
-                key_queue[key_queue_len++] = key_code;
-                pthread_cond_signal(&key_queue_cond);
-            }
-            pthread_mutex_unlock(&key_queue_mutex);
-            break;
-        }
-    }
-}
-
-// Reads input events, handles special hot keys, and adds to the key queue.
-void* ScreenRecoveryUI::input_thread(void *cookie)
-{
-    for (;;) {
-        if (!ev_wait(-1))
-            ev_dispatch();
-    }
-    return NULL;
 }
 
 void ScreenRecoveryUI::LoadBitmap(const char* filename, gr_surface* surface) {
@@ -389,7 +284,6 @@ void ScreenRecoveryUI::LoadBitmap(const char* filename, gr_surface* surface) {
 void ScreenRecoveryUI::Init()
 {
     gr_init();
-    ev_init(input_callback, NULL);
 
     text_col = text_row = 0;
     text_rows = gr_fb_height() / CHAR_HEIGHT;
@@ -406,19 +300,19 @@ void ScreenRecoveryUI::Init()
 
     int i;
 
-    progressBarIndeterminate = (gr_surface*)malloc(ui_parameters.indeterminate_frames *
+    progressBarIndeterminate = (gr_surface*)malloc(indeterminate_frames *
                                                     sizeof(gr_surface));
-    for (i = 0; i < ui_parameters.indeterminate_frames; ++i) {
+    for (i = 0; i < indeterminate_frames; ++i) {
         char filename[40];
         // "indeterminate01.png", "indeterminate02.png", ...
         sprintf(filename, "indeterminate%02d", i+1);
         LoadBitmap(filename, progressBarIndeterminate+i);
     }
 
-    if (ui_parameters.installing_frames > 0) {
-        installationOverlay = (gr_surface*)malloc(ui_parameters.installing_frames *
+    if (installing_frames > 0) {
+        installationOverlay = (gr_surface*)malloc(installing_frames *
                                                    sizeof(gr_surface));
-        for (i = 0; i < ui_parameters.installing_frames; ++i) {
+        for (i = 0; i < installing_frames; ++i) {
             char filename[40];
             // "icon_installing_overlay01.png",
             // "icon_installing_overlay02.png", ...
@@ -430,17 +324,16 @@ void ScreenRecoveryUI::Init()
         // base image on the screen.
         if (backgroundIcon[INSTALLING] != NULL) {
             gr_surface bg = backgroundIcon[INSTALLING];
-            ui_parameters.install_overlay_offset_x +=
-                (gr_fb_width() - gr_get_width(bg)) / 2;
-            ui_parameters.install_overlay_offset_y +=
-                (gr_fb_height() - gr_get_height(bg)) / 2;
+            install_overlay_offset_x += (gr_fb_width() - gr_get_width(bg)) / 2;
+            install_overlay_offset_y += (gr_fb_height() - gr_get_height(bg)) / 2;
         }
     } else {
         installationOverlay = NULL;
     }
 
     pthread_create(&progress_t, NULL, progress_thread, NULL);
-    pthread_create(&input_t, NULL, input_thread, NULL);
+
+    RecoveryUI::Init();
 }
 
 void ScreenRecoveryUI::SetBackground(Icon icon)
@@ -593,70 +486,3 @@ void ScreenRecoveryUI::ShowText(bool visible)
     update_screen_locked();
     pthread_mutex_unlock(&updateMutex);
 }
-
-// Return true if USB is connected.
-bool ScreenRecoveryUI::usb_connected() {
-    int fd = open("/sys/class/android_usb/android0/state", O_RDONLY);
-    if (fd < 0) {
-        printf("failed to open /sys/class/android_usb/android0/state: %s\n",
-               strerror(errno));
-        return 0;
-    }
-
-    char buf;
-    /* USB is connected if android_usb state is CONNECTED or CONFIGURED */
-    int connected = (read(fd, &buf, 1) == 1) && (buf == 'C');
-    if (close(fd) < 0) {
-        printf("failed to close /sys/class/android_usb/android0/state: %s\n",
-               strerror(errno));
-    }
-    return connected;
-}
-
-int ScreenRecoveryUI::WaitKey()
-{
-    pthread_mutex_lock(&key_queue_mutex);
-
-    // Time out after UI_WAIT_KEY_TIMEOUT_SEC, unless a USB cable is
-    // plugged in.
-    do {
-        struct timeval now;
-        struct timespec timeout;
-        gettimeofday(&now, NULL);
-        timeout.tv_sec = now.tv_sec;
-        timeout.tv_nsec = now.tv_usec * 1000;
-        timeout.tv_sec += UI_WAIT_KEY_TIMEOUT_SEC;
-
-        int rc = 0;
-        while (key_queue_len == 0 && rc != ETIMEDOUT) {
-            rc = pthread_cond_timedwait(&key_queue_cond, &key_queue_mutex,
-                                        &timeout);
-        }
-    } while (usb_connected() && key_queue_len == 0);
-
-    int key = -1;
-    if (key_queue_len > 0) {
-        key = key_queue[0];
-        memcpy(&key_queue[0], &key_queue[1], sizeof(int) * --key_queue_len);
-    }
-    pthread_mutex_unlock(&key_queue_mutex);
-    return key;
-}
-
-bool ScreenRecoveryUI::IsKeyPressed(int key)
-{
-    pthread_mutex_lock(&key_queue_mutex);
-    int pressed = key_pressed[key];
-    pthread_mutex_unlock(&key_queue_mutex);
-    return pressed;
-}
-
-void ScreenRecoveryUI::FlushKeys() {
-    pthread_mutex_lock(&key_queue_mutex);
-    key_queue_len = 0;
-    pthread_mutex_unlock(&key_queue_mutex);
-}
-
-RecoveryUI::KeyAction ScreenRecoveryUI::CheckKey(int key) {
-    return RecoveryUI::ENQUEUE;
-}