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https://github.com/portapack-mayhem/mayhem-firmware.git
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b27c738b69
* XOR cursor support in Notepad * XOR cursor support * XOR cursor support * Revert change * Use static buffer * Use static buffer * Clang
268 lines
7.0 KiB
C++
268 lines
7.0 KiB
C++
/*
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* Copyright (C) 2023 Kyle Reed
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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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/* TODO:
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* - Busy indicator while reading files.
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*/
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#ifndef __UI_TEXT_EDITOR_H__
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#define __UI_TEXT_EDITOR_H__
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#include "ui.hpp"
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#include "ui_navigation.hpp"
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#include "ui_painter.hpp"
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#include "ui_styles.hpp"
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#include "ui_widget.hpp"
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#include "file_wrapper.hpp"
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#include "optional.hpp"
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#include <memory>
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#include <string>
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namespace ui {
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enum class ScrollDirection : uint8_t {
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Vertical,
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Horizontal
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};
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/* Control that renders a text file. */
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class TextViewer : public Widget {
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public:
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TextViewer(Rect parent_rect);
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TextViewer(const TextViewer&) = delete;
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TextViewer(TextViewer&&) = delete;
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TextViewer& operator=(const TextViewer&) = delete;
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TextViewer& operator=(TextViewer&&) = delete;
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std::function<void()> on_select{};
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std::function<void()> on_cursor_moved{};
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void paint(Painter& painter) override;
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bool on_key(KeyEvent key) override;
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bool on_encoder(EncoderEvent delta) override;
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void redraw(bool redraw_text = false);
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void set_file(FileWrapper& file) { reset_file(&file); }
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void clear_file() { reset_file(); }
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bool has_file() const { return file_ != nullptr; }
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uint32_t line() const { return cursor_.line; }
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uint32_t col() const { return cursor_.col; }
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uint32_t offset() const;
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void cursor_home();
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void cursor_end();
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// Gets the length of the current line.
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uint16_t line_length();
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const Style& style() { return *font_style; }
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void set_font_zoom(bool zoom);
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void toggle_font_zoom() { set_font_zoom(!font_zoom); };
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private:
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bool font_zoom{};
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const Style* font_style{};
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int8_t char_width{};
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int8_t char_height{};
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uint8_t max_line{};
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uint8_t max_col{};
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/* Returns true if the cursor was updated. */
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bool apply_scrolling_constraints(
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int16_t delta_line,
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int16_t delta_col);
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void paint_text(Painter& painter, uint32_t line, uint16_t col);
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void paint_cursor(Painter& painter);
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void reset_file(FileWrapper* file = nullptr);
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FileWrapper* file_{};
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struct {
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// Previous cursor state.
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uint32_t line{};
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uint16_t col{};
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// Previous draw state.
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uint32_t first_line{};
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uint16_t first_col{};
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bool redraw_text{true};
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} paint_state_{};
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struct {
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uint32_t line{};
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uint16_t col{};
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ScrollDirection dir{ScrollDirection::Vertical};
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// Pixel buffer used for cursor XOR'ing - Max cursor width = Max char width + 1
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ColorRGB888 pixel_buffer8[ui::char_width + 1]{};
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Color pixel_buffer[ui::char_width + 1]{};
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} cursor_{};
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};
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/* Menu control for the TextEditor. */
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class TextEditorMenu : public View {
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public:
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TextEditorMenu();
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void on_show() override;
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void on_hide() override;
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std::function<void()>& on_home() { return button_home.on_select; }
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std::function<void()>& on_end() { return button_end.on_select; }
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std::function<void()>& on_zoom() { return button_zoom.on_select; }
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std::function<void()>& on_delete_line() { return button_delline.on_select; }
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std::function<void()>& on_edit_line() { return button_edit.on_select; }
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std::function<void()>& on_add_line() { return button_addline.on_select; }
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std::function<void()>& on_open() { return button_open.on_select; }
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std::function<void()>& on_save() { return button_save.on_select; }
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std::function<void()>& on_exit() { return button_exit.on_select; }
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private:
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void hide_children(bool hidden);
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Rectangle rect_frame{
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{0 * 8, 0 * 8, 23 * 8, 23 * 8},
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Color::dark_grey()};
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NewButton button_home{
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{1 * 8, 1 * 8, 7 * 8, 7 * 8},
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"Home",
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&bitmap_arrow_left,
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Color::dark_grey()};
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NewButton button_end{
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{8 * 8, 1 * 8, 7 * 8, 7 * 8},
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"End",
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&bitmap_arrow_right,
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Color::dark_grey()};
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NewButton button_zoom{
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{15 * 8, 1 * 8, 7 * 8, 7 * 8},
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"Zoom",
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&bitmap_icon_search,
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Color::orange()};
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NewButton button_delline{
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{1 * 8, 8 * 8, 7 * 8, 7 * 8},
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"-Line",
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&bitmap_icon_delete,
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Color::dark_red()};
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NewButton button_edit{
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{8 * 8, 8 * 8, 7 * 8, 7 * 8},
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"Edit",
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&bitmap_icon_rename,
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Color::dark_blue()};
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NewButton button_addline{
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{15 * 8, 8 * 8, 7 * 8, 7 * 8},
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"+Line",
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&bitmap_icon_scanner,
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Color::dark_blue()};
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NewButton button_open{
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{1 * 8, 15 * 8, 7 * 8, 7 * 8},
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"Open",
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&bitmap_icon_load,
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Color::green()};
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NewButton button_save{
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{8 * 8, 15 * 8, 7 * 8, 7 * 8},
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"Save",
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&bitmap_icon_save,
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Color::green()};
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NewButton button_exit{
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{15 * 8, 15 * 8, 7 * 8, 7 * 8},
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"Exit",
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&bitmap_icon_previous,
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Color::dark_red()};
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};
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/* View viewing and minor edits on a text file. */
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class TextEditorView : public View {
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public:
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TextEditorView(NavigationView& nav);
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TextEditorView(
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NavigationView& nav,
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const std::filesystem::path& path);
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~TextEditorView();
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std::string title() const override {
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return "Notepad";
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};
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void on_show() override;
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private:
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static constexpr size_t max_edit_length = 1024;
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std::string edit_line_buffer_{};
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void open_file(const std::filesystem::path& path);
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void save_file();
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void refresh_ui();
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void update_position();
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void hide_menu(bool hidden = true);
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void show_file_picker(bool immediate = true);
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void show_edit_line();
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void show_save_prompt(std::function<void()> continuation);
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void prepare_for_write();
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void save_temp_file();
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NavigationView& nav_;
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std::unique_ptr<FileWrapper> file_{};
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std::filesystem::path path_{};
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bool file_dirty_{false};
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bool has_temp_file_{false};
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TextViewer viewer{
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/* 272 = 320 - 16 (top bar) - 32 (bottom controls) */
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{0, 0, 240, 272}};
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TextEditorMenu menu{};
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NewButton button_menu{
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{26 * 8, 34 * 8, 4 * 8, 4 * 8},
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{},
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&bitmap_icon_controls,
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Color::dark_grey()};
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Text text_position{
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{0 * 8, 34 * 8, 26 * 8, 2 * 8},
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""};
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Text text_size{
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{0 * 8, 36 * 8, 26 * 8, 2 * 8},
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""};
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};
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} // namespace ui
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#endif // __UI_TEXT_EDITOR_H__
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