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platform_bootable_recovery/screen_ui.cpp
Doug Zongker 32a0a47a59 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
2011-11-04 14:09:48 -07:00

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/*
* 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 "common.h"
#include "device.h"
#include "minui/minui.h"
#include "screen_ui.h"
#include "ui.h"
#define CHAR_WIDTH 10
#define CHAR_HEIGHT 18
// 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.
static ScreenRecoveryUI* self = NULL;
// Return the current time as a double (including fractions of a second).
static double now() {
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec + tv.tv_usec / 1000000.0;
}
ScreenRecoveryUI::ScreenRecoveryUI() :
currentIcon(NONE),
installingFrame(0),
progressBarType(EMPTY),
progressScopeStart(0),
progressScopeSize(0),
progress(0),
pagesIdentical(false),
text_cols(0),
text_rows(0),
text_col(0),
text_row(0),
text_top(0),
show_text(false),
show_text_ever(false),
show_menu(false),
menu_top(0),
menu_items(0),
menu_sel(0),
// 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);
self = this;
}
// Draw the given frame over the installation overlay animation. The
// background is not cleared or draw with the base icon first; we
// assume that the frame already contains some other frame of the
// animation. Does nothing if no overlay animation is defined.
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::draw_install_overlay_locked(int frame) {
if (installationOverlay == NULL) return;
gr_surface surface = installationOverlay[frame];
int iconWidth = gr_get_width(surface);
int iconHeight = gr_get_height(surface);
gr_blit(surface, 0, 0, iconWidth, iconHeight,
install_overlay_offset_x, install_overlay_offset_y);
}
// 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_fill(0, 0, gr_fb_width(), gr_fb_height());
if (icon) {
gr_surface surface = backgroundIcon[icon];
int iconWidth = gr_get_width(surface);
int iconHeight = gr_get_height(surface);
int iconX = (gr_fb_width() - iconWidth) / 2;
int iconY = (gr_fb_height() - iconHeight) / 2;
gr_blit(surface, 0, 0, iconWidth, iconHeight, iconX, iconY);
if (icon == INSTALLING) {
draw_install_overlay_locked(installingFrame);
}
}
}
// 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 == INSTALLING) {
draw_install_overlay_locked(installingFrame);
}
if (progressBarType != EMPTY) {
int iconHeight = gr_get_height(backgroundIcon[INSTALLING]);
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 (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);
}
}
if (progressBarType == INDETERMINATE) {
static int frame = 0;
gr_blit(progressBarIndeterminate[frame], 0, 0, width, height, dx, dy);
frame = (frame + 1) % indeterminate_frames;
}
}
}
void ScreenRecoveryUI::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 updateMutex locked.
void ScreenRecoveryUI::draw_screen_locked()
{
draw_background_locked(currentIcon);
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 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::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(&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 && 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 (progressBarType == INDETERMINATE && !show_text) {
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 progress = 1.0 * elapsed / duration;
if (progress > 1.0) progress = 1.0;
if (progress > progress) {
progress = progress;
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_surface(filename, surface);
if (result < 0) {
LOGE("missing bitmap %s\n(Code %d)\n", filename, result);
}
}
void ScreenRecoveryUI::Init()
{
gr_init();
text_col = text_row = 0;
text_rows = gr_fb_height() / CHAR_HEIGHT;
if (text_rows > kMaxRows) text_rows = kMaxRows;
text_top = 1;
text_cols = gr_fb_width() / CHAR_WIDTH;
if (text_cols > kMaxCols - 1) text_cols = kMaxCols - 1;
LoadBitmap("icon_installing", &backgroundIcon[INSTALLING]);
LoadBitmap("icon_error", &backgroundIcon[ERROR]);
LoadBitmap("progress_empty", &progressBarEmpty);
LoadBitmap("progress_fill", &progressBarFill);
int i;
progressBarIndeterminate = (gr_surface*)malloc(indeterminate_frames *
sizeof(gr_surface));
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 (installing_frames > 0) {
installationOverlay = (gr_surface*)malloc(installing_frames *
sizeof(gr_surface));
for (i = 0; i < installing_frames; ++i) {
char filename[40];
// "icon_installing_overlay01.png",
// "icon_installing_overlay02.png", ...
sprintf(filename, "icon_installing_overlay%02d", i+1);
LoadBitmap(filename, installationOverlay+i);
}
// Adjust the offset to account for the positioning of the
// base image on the screen.
if (backgroundIcon[INSTALLING] != NULL) {
gr_surface bg = backgroundIcon[INSTALLING];
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);
RecoveryUI::Init();
}
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;
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(progressBarIndeterminate[0]);
float scale = width * progressScopeSize;
if ((int) (progress * scale) != (int) (fraction * scale)) {
progress = fraction;
update_progress_locked();
}
}
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);
// This can get called before ui_init(), so be careful.
pthread_mutex_lock(&updateMutex);
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(&updateMutex);
}
void ScreenRecoveryUI::StartMenu(const char* const * headers, const char* const * items,
int initial_selection) {
int i;
pthread_mutex_lock(&updateMutex);
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(&updateMutex);
}
int ScreenRecoveryUI::SelectMenu(int sel) {
int old_sel;
pthread_mutex_lock(&updateMutex);
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(&updateMutex);
return sel;
}
void ScreenRecoveryUI::EndMenu() {
int i;
pthread_mutex_lock(&updateMutex);
if (show_menu > 0 && text_rows > 0 && text_cols > 0) {
show_menu = 0;
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 = 1;
update_screen_locked();
pthread_mutex_unlock(&updateMutex);
}
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