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Diffstat (limited to '')
| -rw-r--r-- | ui.h | 75 |
1 files changed, 75 insertions, 0 deletions
@@ -0,0 +1,75 @@ +/* + * 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. + */ + +#ifndef RECOVERY_UI_H +#define RECOVERY_UI_H + +// Initialize the graphics system. +void ui_init(); + +// Use KEY_* codes from <linux/input.h> or KEY_DREAM_* from "minui/minui.h". +int ui_wait_key(); // waits for a key/button press, returns the code +int ui_key_pressed(int key); // returns >0 if the code is currently pressed +int ui_text_visible(); // returns >0 if text log is currently visible +int ui_text_ever_visible(); // returns >0 if text log was ever visible +void ui_show_text(int visible); +void ui_clear_key_queue(); + +// Write a message to the on-screen log shown with Alt-L (also to stderr). +// The screen is small, and users may need to report these messages to support, +// so keep the output short and not too cryptic. +void ui_print(const char *fmt, ...) __attribute__((format(printf, 1, 2))); + +// Display some header text followed by a menu of items, which appears +// at the top of the screen (in place of any scrolling ui_print() +// output, if necessary). +void ui_start_menu(const char* const * headers, const char* const * items, + int initial_selection); +// Set the menu highlight to the given index, and return it (capped to +// the range [0..numitems). +int ui_menu_select(int sel); +// End menu mode, resetting the text overlay so that ui_print() +// statements will be displayed. +void ui_end_menu(); + +// Set the icon (normally the only thing visible besides the progress bar). +enum { + BACKGROUND_ICON_NONE, + BACKGROUND_ICON_INSTALLING, + BACKGROUND_ICON_ERROR, + NUM_BACKGROUND_ICONS +}; +void ui_set_background(int icon); + +// Show a progress bar and define the scope of the next operation: +// portion - fraction of the progress bar the next operation will use +// seconds - expected time interval (progress bar moves at this minimum rate) +void ui_show_progress(float portion, int seconds); +void ui_set_progress(float fraction); // 0.0 - 1.0 within the defined scope + +// Default allocation of progress bar segments to operations +static const int VERIFICATION_PROGRESS_TIME = 60; +static const float VERIFICATION_PROGRESS_FRACTION = 0.25; +static const float DEFAULT_FILES_PROGRESS_FRACTION = 0.4; +static const float DEFAULT_IMAGE_PROGRESS_FRACTION = 0.1; + +// Show a rotating "barberpole" for ongoing operations. Updates automatically. +void ui_show_indeterminate_progress(); + +// Hide and reset the progress bar. +void ui_reset_progress(); + +#endif // RECOVERY_UI_H |