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* Copyright 2019, 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#pragma once
#include <stdint.h>
#include <sys/types.h>
#include <memory>
#include <vector>
#include <layouts/layout.h>
#include <teeui/error.h>
#include <teeui/utils.h>
#include <lib/secure_fb/secure_fb.h>
#include <secure_input/secure_input_proto.h>
#include <device_layout.h>
class TrustyConfirmationUI {
TrustyConfirmationUI() = default;
* Renders and displays the dialog.
* prompt: The message that is to be confirmed.
* lang_id: The locale to use. Selects the language used for the button
* texts and instructions. inverted: If set, the inverted color scheme is
* used. magnified: If set, the magnified font profile is used.
* Returns ResponseCode::OK if the UI was successfully start.
* Returns ResponseCode::UIError if the secure display could not be enabled
* or if the framebuffer topology is off. Returns
* ResponseCode::UIErrorMissingGlyph if the font rendering failed. Returns
* ResponseCode::UIErrorMessageTooLong if the any of the strings could not
* be fully rendered on the screen.
teeui::ResponseCode start(const char* promt,
const char* lang_id,
bool inverted,
bool magnified);
* Toggles the color profile of the buttons/button labels indicating to the
* user that input enabled (enable == true) or disabled (enabled == false).
* Returns ResponseCode::OK if the UI was successfully updated.
* Returns ResponseCode::UIError if the secure framebuffer could not be
* flipped. Other errors same as start() above.
teeui::ResponseCode showInstructions(bool enable);
* Stops the secure display and frees up all of the related resources.
void stop();
// TrustyConfirmationUI not copyable
TrustyConfirmationUI& operator=(const TrustyConfirmationUI&) = delete;
TrustyConfirmationUI& operator=(TrustyConfirmationUI&& other) {
fb_info_ = other.fb_info_;
return *this;
teeui::Error updateTranslations(uint32_t idx);
teeui::ResponseCode renderAndSwap(uint32_t idx);
std::vector<secure_fb_info> fb_info_;
std::vector<secure_fb_handle_t> secure_fb_handle_;
bool inverted_;
bool enabled_;
std::vector<std::unique_ptr<teeui::layouts::ILayout>> layout_;