New app: Spectrum Painter (#988)

* added spectrum painter app

firmware/application/apps/ui_spectrum_painter_text.cpp

@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ui_spectrum_painter_text.hpp"
+#include "cpld_update.hpp"
+#include "bmp.hpp"
+#include "baseband_api.hpp"
+
+#include "ui_fileman.hpp"
+#include "io_file.hpp"
+#include "file.hpp"
+#include "portapack_persistent_memory.hpp"
+#include "ui_font_fixed_8x16.hpp"
+
+namespace ui {
+
+SpectrumInputTextView::SpectrumInputTextView(NavigationView& nav) {
+	hidden(true);
+
+	add_children({
+		&text_message_0,
+		&text_message_1,
+		&text_message_2,
+		&text_message_3,
+		&text_message_4,
+		&text_message_5,
+		&text_message_6,
+		&text_message_7,
+		&text_message_8,
+		&text_message_9,
+		&button_message
+	 });
+
+	button_message.on_select = [this, &nav](Button&) {
+		this->on_set_text(nav);
+	};
+}
+
+SpectrumInputTextView::~SpectrumInputTextView() {
+}
+
+void SpectrumInputTextView::on_set_text(NavigationView& nav) {
+	text_prompt(nav, buffer, 300);
+}
+
+void SpectrumInputTextView::focus() {
+    button_message.focus();
+}
+
+void SpectrumInputTextView::paint(Painter& painter) {
+	message = buffer;
+	for (uint32_t i = 0 ; i < text_message.size(); i++) {
+		if (message.length() > i * 30)
+			text_message[i]->set(message.substr(i * 30, 30));
+		else
+			text_message[i]->set("");
+	}
+
+	painter.fill_rectangle(
+		{{0, 40}, {240, 204}},
+		style().background
+	);
+}
+
+constexpr uint32_t pixel_repeat = 32;
+uint16_t SpectrumInputTextView::get_width(){
+	return 16 * pixel_repeat;
+}
+
+uint16_t SpectrumInputTextView::get_height(){
+	return this->message.length() * 8;
+}
+
+std::vector<uint8_t> SpectrumInputTextView::get_line(uint16_t y) {
+	auto character_position = y / 8;
+	auto character = this->message[character_position];
+	auto glyph_data = ui::font::fixed_8x16.glyph(character).pixels();
+	
+	auto line_in_character = y % 8;
+	std::vector<uint8_t> data(16 * pixel_repeat);
+
+	for (uint32_t index = 0; index < 16; index++) {
+		auto glyph_byte = index;
+		auto glyph_bit = line_in_character;
+		uint8_t glyph_pixel = (glyph_data[glyph_byte] & (1 << glyph_bit)) >> glyph_bit;
+
+		for (uint32_t j = 0; j < pixel_repeat; j++)
+			data[index*pixel_repeat + j] = glyph_pixel * 255;
+	}
+
+	return data;
+}
+}