254 lines
7.0 KiB
C++
254 lines
7.0 KiB
C++
/*
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* \brief Terminal service
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* \author Norman Feske
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* \date 2011-08-11
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*/
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/*
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* Copyright (C) 2011-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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/* Genode includes */
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#include <base/component.h>
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#include <base/log.h>
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#include <base/heap.h>
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#include <framebuffer_session/connection.h>
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#include <input_session/connection.h>
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#include <timer_session/connection.h>
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#include <base/attached_rom_dataspace.h>
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#include <base/attached_ram_dataspace.h>
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#include <input/event.h>
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#include <nitpicker_gfx/tff_font.h>
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/* terminal includes */
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#include <terminal/decoder.h>
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#include <terminal/types.h>
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/* local includes */
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#include "text_screen_surface.h"
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#include "session.h"
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namespace Terminal { struct Main; }
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struct Terminal::Main : Character_consumer
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{
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/*
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* Noncopyable
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*/
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Main(Main const &);
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Main &operator = (Main const &);
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Env &_env;
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Attached_rom_dataspace _config { _env, "config" };
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/**
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* Return font data according to config
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*/
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static char const *_font_data(Xml_node config);
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Tff_font::Static_glyph_buffer<4096> _glyph_buffer { };
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Reconstructible<Tff_font> _font { _font_data(_config.xml()), _glyph_buffer };
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Reconstructible<Font_family> _font_family { *_font };
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Color_palette _color_palette { };
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void _handle_config();
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Signal_handler<Main> _config_handler {
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_env.ep(), *this, &Main::_handle_config };
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Input::Connection _input { _env };
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Timer::Connection _timer { _env };
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Heap _heap { _env.ram(), _env.rm() };
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Framebuffer _framebuffer { _env, _config_handler };
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typedef Pixel_rgb565 PT;
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Constructible<Text_screen_surface<PT>> _text_screen_surface { };
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Session::Size _terminal_size { };
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/*
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* Time in milliseconds between a change of the terminal content and the
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* update of the pixels. By delaying the update, multiple intermediate
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* changes result in only one rendering step.
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*/
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unsigned const _flush_delay = 5;
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bool _flush_scheduled = false;
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void _handle_flush(Duration)
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{
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_flush_scheduled = false;
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// XXX distinguish between normal and alternate display
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if (_text_screen_surface.constructed())
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_text_screen_surface->redraw();
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}
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Timer::One_shot_timeout<Main> _flush_timeout {
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_timer, *this, &Main::_handle_flush };
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void _schedule_flush()
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{
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if (!_flush_scheduled) {
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_flush_timeout.schedule(Microseconds{1000*_flush_delay});
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_flush_scheduled = true;
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}
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}
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/**
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* Character_consumer interface, called from 'Terminal::Session_component'
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*/
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void consume_character(Character c) override
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{
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// XXX distinguish between normal and alternative display mode (smcup)
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if (_text_screen_surface.constructed())
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_text_screen_surface->apply_character(c);
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_schedule_flush();
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}
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/* input read buffer */
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Read_buffer _read_buffer { };
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/* create root interface for service */
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Root_component _root { _env, _heap, _read_buffer, *this };
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void _handle_input();
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Signal_handler<Main> _input_handler {
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_env.ep(), *this, &Main::_handle_input };
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Main(Env &env) : _env(env)
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{
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_handle_config();
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_config.sigh(_config_handler);
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_input.sigh(_input_handler);
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/* announce service at our parent */
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_env.parent().announce(_env.ep().manage(_root));
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}
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};
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/* built-in fonts */
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extern char const _binary_notix_8_tff_start;
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extern char const _binary_terminus_12_tff_start;
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extern char const _binary_terminus_16_tff_start;
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char const *Terminal::Main::_font_data(Xml_node config)
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{
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if (config.has_sub_node("font")) {
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size_t const size = config.sub_node("font").attribute_value("size", 16U);
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switch (size) {
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case 8: return &_binary_notix_8_tff_start; break;
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case 12: return &_binary_terminus_12_tff_start; break;
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case 16: return &_binary_terminus_16_tff_start; break;
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default: break;
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}
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}
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return &_binary_terminus_16_tff_start;
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}
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void Terminal::Main::_handle_config()
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{
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_config.update();
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_font_family.destruct();
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_font.destruct();
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Xml_node const config = _config.xml();
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_font.construct(_font_data(config), _glyph_buffer);
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_font_family.construct(*_font);
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/*
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* Adapt terminal to framebuffer mode changes
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*/
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_framebuffer.switch_to_new_mode();
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_text_screen_surface.construct(_heap, *_font_family,
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_color_palette, _framebuffer);
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_terminal_size = _text_screen_surface->size();
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_root.notify_resized(_terminal_size);
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_schedule_flush();
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}
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void Terminal::Main::_handle_input()
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{
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_input.for_each_event([&] (Input::Event const &event) {
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if (event.type() == Input::Event::CHARACTER) {
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Input::Event::Utf8 const utf8 = event.utf8();
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char const sequence[] { (char)utf8.b0, (char)utf8.b1,
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(char)utf8.b2, (char)utf8.b3, 0 };
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/* function-key unicodes */
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enum {
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CODEPOINT_UP = 0xf700, CODEPOINT_DOWN = 0xf701,
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CODEPOINT_LEFT = 0xf702, CODEPOINT_RIGHT = 0xf703,
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CODEPOINT_F1 = 0xf704, CODEPOINT_F2 = 0xf705,
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CODEPOINT_F3 = 0xf706, CODEPOINT_F4 = 0xf707,
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CODEPOINT_F5 = 0xf708, CODEPOINT_F6 = 0xf709,
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CODEPOINT_F7 = 0xf70a, CODEPOINT_F8 = 0xf70b,
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CODEPOINT_F9 = 0xf70c, CODEPOINT_F10 = 0xf70d,
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CODEPOINT_F11 = 0xf70e, CODEPOINT_F12 = 0xf70f,
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CODEPOINT_HOME = 0xf729, CODEPOINT_INSERT = 0xf727,
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CODEPOINT_DELETE = 0xf728, CODEPOINT_END = 0xf72b,
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CODEPOINT_PAGEUP = 0xf72c, CODEPOINT_PAGEDOWN = 0xf72d,
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};
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Codepoint const codepoint = Utf8_ptr(sequence).codepoint();
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char const *special_sequence = nullptr;
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switch (codepoint.value) {
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case CODEPOINT_UP: special_sequence = "\EOA"; break;
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case CODEPOINT_DOWN: special_sequence = "\EOB"; break;
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case CODEPOINT_LEFT: special_sequence = "\EOD"; break;
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case CODEPOINT_RIGHT: special_sequence = "\EOC"; break;
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case CODEPOINT_F1: special_sequence = "\EOP"; break;
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case CODEPOINT_F2: special_sequence = "\EOQ"; break;
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case CODEPOINT_F3: special_sequence = "\EOR"; break;
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case CODEPOINT_F4: special_sequence = "\EOS"; break;
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case CODEPOINT_F5: special_sequence = "\E[15~"; break;
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case CODEPOINT_F6: special_sequence = "\E[17~"; break;
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case CODEPOINT_F7: special_sequence = "\E[18~"; break;
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case CODEPOINT_F8: special_sequence = "\E[19~"; break;
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case CODEPOINT_F9: special_sequence = "\E[20~"; break;
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case CODEPOINT_F10: special_sequence = "\E[21~"; break;
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case CODEPOINT_F11: special_sequence = "\E[23~"; break;
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case CODEPOINT_F12: special_sequence = "\E[24~"; break;
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case CODEPOINT_HOME: special_sequence = "\E[1~"; break;
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case CODEPOINT_INSERT: special_sequence = "\E[2~"; break;
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case CODEPOINT_DELETE: special_sequence = "\E[3~"; break;
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case CODEPOINT_END: special_sequence = "\E[4~"; break;
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case CODEPOINT_PAGEUP: special_sequence = "\E[5~"; break;
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case CODEPOINT_PAGEDOWN: special_sequence = "\E[6~"; break;
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};
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if (special_sequence)
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_read_buffer.add(special_sequence);
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else
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_read_buffer.add(sequence);
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}
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});
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}
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void Component::construct(Genode::Env &env) { static Terminal::Main main(env); }
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