mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-17 05:28:13 +00:00
360 lines
8.2 KiB
C++
360 lines
8.2 KiB
C++
/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2016 Furrtek
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "ui_handwrite.hpp"
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#include "portapack.hpp"
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#include "hackrf_hal.hpp"
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#include "portapack_shared_memory.hpp"
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#include <algorithm>
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using namespace portapack;
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namespace ui {
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void HandWriteView::paint(Painter& painter) {
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_painter = &painter;
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}
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HandWriteView::HandWriteView(
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NavigationView& nav,
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std::string * str,
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size_t max_length
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) : TextEntryView(nav, str, max_length)
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{
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size_t n;
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// Handwriting alphabet definition here
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handwriting = &handwriting_unistroke;
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add_children({
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&button_case
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});
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const auto button_fn = [this](Button& button) {
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this->on_button(button);
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};
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n = 0;
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for (auto& button : num_buttons) {
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add_child(&button);
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button.on_select = button_fn;
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button.set_parent_rect({
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static_cast<Coord>(n * 24),
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static_cast<Coord>(236),
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24, 28
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});
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const std::string label {
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(char)(n + '0')
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};
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button.set_text(label);
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button.id = n + '0';
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n++;
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}
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n = 0;
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for (auto& button : special_buttons) {
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add_child(&button);
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button.on_select = button_fn;
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button.set_parent_rect({
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static_cast<Coord>(50 + n * 24),
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static_cast<Coord>(270),
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24, 28
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});
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const std::string label {
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(char)(special_chars[n])
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};
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button.set_text(label);
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button.id = special_chars[n];
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n++;
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}
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button_case.on_select = [this, &nav](Button&) {
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if (_lowercase == true) {
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_lowercase = false;
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button_case.set_text("LC");
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} else {
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_lowercase = true;
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button_case.set_text("UC");
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}
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};
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button_ok.on_select = [this, &nav](Button&) {
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if (on_changed)
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on_changed(_str);
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nav.pop();
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};
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update_text();
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}
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bool HandWriteView::on_touch(const TouchEvent event) {
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if (event.type == ui::TouchEvent::Type::Start) {
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stroke_index = 0;
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move_wait = 3;
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tracing = true;
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}
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if (event.type == ui::TouchEvent::Type::End) {
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tracing = false;
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guess_letter();
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}
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if (event.type == ui::TouchEvent::Type::Move) {
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if (tracing)
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current_pos = event.point;
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}
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return true;
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}
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void HandWriteView::clear_zone(const Color color, const bool flash) {
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display.fill_rectangle(
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{{0, 32}, {240, 216}},
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color
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);
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if (flash) {
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flash_timer = 8;
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} else {
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// Draw grid
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_painter->draw_rectangle(
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{{0, 32}, {80, 216}},
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Color::grey()
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);
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_painter->draw_rectangle(
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{{80, 32}, {80, 216}},
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Color::grey()
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);
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_painter->draw_rectangle(
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{{160, 32}, {80, 216}},
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Color::grey()
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);
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_painter->draw_rectangle(
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{{0, 104}, {240, 72}},
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Color::grey()
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);
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}
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}
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void HandWriteView::guess_letter() {
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uint32_t symbol, match, count, stroke_idx, stroke_data;
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Condition cond;
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Direction dir;
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bool matched;
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// Letter guessing
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if (stroke_index) {
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for (symbol = 0; symbol < handwriting->letter_count; symbol++) {
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count = handwriting->letter[symbol].count;
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matched = false;
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if (count) {
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// We have a count match to do
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if ((count == 1) && (stroke_index == 1)) matched = true;
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if ((count == 2) && (stroke_index == 2)) matched = true;
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if ((count == 3) && (stroke_index > 2)) matched = true;
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} else {
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matched = true;
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}
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if (matched) {
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for (match = 0; match < 3; match++) {
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cond = handwriting->letter[symbol].match[match].cond;
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dir = handwriting->letter[symbol].match[match].dir;
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if ((cond != cond_empty) && (dir != dir_empty)) {
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if (cond == last) {
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if (stroke_index)
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stroke_idx = stroke_index - 1;
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else
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stroke_idx = 0;
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} else if (cond == stroke_a)
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stroke_idx = 0;
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else if (cond == stroke_b)
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stroke_idx = 1;
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else if (cond == stroke_c)
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stroke_idx = 2;
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else
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stroke_idx = 3;
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if (stroke_idx >= stroke_index) break;
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stroke_data = stroke_list[stroke_idx];
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if ((dir & 0xF0) == 0xF0) {
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if ((dir & 0x0F) != (stroke_data & 0x0F)) break;
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} else if ((dir & 0x0F) == 0x0F) {
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if ((dir & 0xF0) != (stroke_data & 0xF0)) break;
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} else {
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if (dir != (int32_t)stroke_data) break;
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}
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}
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}
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if (match == 3)
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break;
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else
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matched = false;
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}
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}
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if (matched) {
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if (symbol) {
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if (_lowercase)
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char_add('a' + symbol - 1);
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else
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char_add('A' + symbol - 1);
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clear_zone(Color::green(), true); // Green flash
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} else {
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if (_cursor_pos) {
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char_delete();
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clear_zone(Color::yellow(), true); // Yellow flash
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} else {
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clear_zone(Color::red(), true); // Red flash
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}
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}
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} else {
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clear_zone(Color::red(), true); // Red flash
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}
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} else {
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// Short tap is space
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char_add(' ');
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clear_zone(Color::green(), true); // Green flash
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}
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update_text();
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stroke_index = 0;
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}
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void HandWriteView::add_stroke(uint8_t dir) {
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if (stroke_index < 8) {
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stroke_list[stroke_index] = dir;
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stroke_index++;
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} else {
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guess_letter();
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}
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}
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void HandWriteView::sample_pen() {
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int16_t diff_x, diff_y;
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uint8_t dir, dir_ud, dir_lr, stroke_prev;
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draw_cursor();
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if (flash_timer) {
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if (flash_timer == 1) clear_zone(Color::black(), false);
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flash_timer--;
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}
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if (!(sample_skip & 1)) {
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if (tracing) {
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if (move_wait) {
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move_wait--; // ~100ms delay to get rid of jitter from touch start
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} else {
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diff_x = current_pos.x() - last_pos.x();
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diff_y = current_pos.y() - last_pos.y();
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if (current_pos.y() <= 240) {
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display.fill_rectangle(
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{{current_pos.x(), current_pos.y()}, {4, 4}},
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Color::grey()
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);
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}
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dir = 0; // UL by default
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if (abs(diff_x) > 7) {
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if (diff_x > 0)
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dir |= 0x01; // R
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} else {
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dir |= 0x02; // ?
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}
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if (abs(diff_y) > 7) {
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if (diff_y > 0)
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dir |= 0x10; // D
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} else {
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dir |= 0x20; // ?
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}
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// Need at least two identical directions to validate stroke
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if ((dir & 0x11) == (dir_prev & 0x11))
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dir_cnt++;
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else
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dir_cnt = 0;
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dir_prev = dir;
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if (dir_cnt > 1) {
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dir_cnt = 0;
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if (stroke_index) {
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if ((stroke_list[stroke_index - 1] != dir) && (dir != 0x22)) {
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// Register stroke if different from last one
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dir_ud = (dir & 0xF0);
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dir_lr = (dir & 0x0F);
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stroke_prev = stroke_list[stroke_index - 1];
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if (dir_ud == 0x20) {
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// LR changed
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if ((stroke_prev & 0x0F) != dir_lr) add_stroke(dir);
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} else if (dir_lr == 0x02) {
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// UD changed
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if ((stroke_prev & 0xF0) != dir_ud) add_stroke(dir);
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} else {
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// Add direction
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if (((stroke_prev & 0xF0) == 0x20) && (dir_ud != 0x20)) {
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// Add UD
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if ((stroke_prev & 0x0F) == dir_lr) {
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// Replace totally
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stroke_list[stroke_index - 1] = dir;
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} else if (dir_lr == 0x02) {
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// Merge UD
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stroke_list[stroke_index - 1] = dir_ud | (stroke_prev & 0x0F);
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} else {
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add_stroke(dir);
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}
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} else if (((stroke_prev & 0x0F) == 0x02) && (dir_lr != 0x02)) {
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// Add LR
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if ((stroke_prev & 0xF0) == dir_ud) {
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// Replace totally
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stroke_list[stroke_index - 1] = dir;
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} else if (dir_ud == 0x20) {
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// Merge LR
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stroke_list[stroke_index - 1] = dir_lr | (stroke_prev & 0xF0);
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} else {
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add_stroke(dir);
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}
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} else {
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add_stroke(dir);
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}
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}
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}
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} else {
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// Register first stroke
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if (dir != 0x22) add_stroke(dir);
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}
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}
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}
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last_pos = current_pos;
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}
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}
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sample_skip++;
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}
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void HandWriteView::on_show() {
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clear_zone(Color::black(), false);
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}
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void HandWriteView::on_button(Button& button) {
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char_add(button.id);
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update_text();
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}
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}
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