portapack-mayhem/firmware/application/event_m0.cpp

342 lines
8.2 KiB
C++

/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
*
* 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 "event_m0.hpp"
#include "portapack.hpp"
#include "sd_card.hpp"
#include "rtc_time.hpp"
#include "message.hpp"
#include "message_queue.hpp"
#include "irq_controls.hpp"
#include "buffer_exchange.hpp"
#include "ch.h"
#include "lpc43xx_cpp.hpp"
using namespace lpc43xx;
#include <array>
#include "ui_font_fixed_8x16.hpp"
extern "C" {
CH_IRQ_HANDLER(M4Core_IRQHandler) {
CH_IRQ_PROLOGUE();
chSysLockFromIsr();
BufferExchange::handle_isr();
EventDispatcher::check_fifo_isr();
chSysUnlockFromIsr();
creg::m4txevent::clear();
CH_IRQ_EPILOGUE();
}
}
class MessageHandlerMap {
public:
using MessageHandler = std::function<void(Message* const p)>;
void register_handler(const Message::ID id, MessageHandler&& handler) {
if( map_[toUType(id)] != nullptr ) {
chDbgPanic("MsgDblReg");
}
map_[toUType(id)] = std::move(handler);
}
void unregister_handler(const Message::ID id) {
map_[toUType(id)] = nullptr;
}
void send(Message* const message) {
if( message->id < Message::ID::MAX ) {
auto& fn = map_[toUType(message->id)];
if( fn ) {
fn(message);
}
}
}
private:
using MapType = std::array<MessageHandler, toUType(Message::ID::MAX)>;
MapType map_ { };
};
static MessageHandlerMap message_map;
Thread* EventDispatcher::thread_event_loop = nullptr;
bool EventDispatcher::is_running = false;
EventDispatcher::EventDispatcher(
ui::Widget* const top_widget,
ui::Context& context
) : top_widget { top_widget },
painter { },
context(context)
{
init_message_queues();
thread_event_loop = chThdSelf();
is_running = true;
touch_manager.on_event = [this](const ui::TouchEvent event) {
this->on_touch_event(event);
};
}
void EventDispatcher::run() {
while(is_running) {
const auto events = wait();
dispatch(events);
}
}
void EventDispatcher::request_stop() {
is_running = false;
}
void EventDispatcher::set_display_sleep(const bool sleep) {
// TODO: Distribute display sleep message more broadly, shut down data generation
// on baseband side, since all that data is being discarded during sleep.
if( sleep ) {
portapack::backlight()->off();
portapack::display.sleep();
} else {
portapack::display.wake();
// Don't turn on backlight here.
// Let frame sync handler turn on backlight after repaint.
}
display_sleep = sleep;
};
eventmask_t EventDispatcher::wait() {
return chEvtWaitAny(ALL_EVENTS);
}
void EventDispatcher::dispatch(const eventmask_t events) {
if( shared_memory.m4_panic_msg[0] != 0 ) {
halt = true;
}
if( halt ) {
if( shared_memory.m4_panic_msg[0] != 0 ) {
painter.fill_rectangle(
{ 0, 0, portapack::display.width(), portapack::display.height() },
ui::Color::red()
);
constexpr int border = 8;
painter.fill_rectangle(
{ border, border, portapack::display.width() - (border * 2), portapack::display.height() - (border * 2) },
ui::Color::black()
);
painter.draw_string({ 48, 24 }, top_widget->style(), "M4 Guru Meditation");
shared_memory.m4_panic_msg[sizeof(shared_memory.m4_panic_msg) - 1] = 0;
const std::string message = shared_memory.m4_panic_msg;
const int x_offset = (portapack::display.width() - (message.size() * 8)) / 2;
constexpr int y_offset = (portapack::display.height() - 16) / 2;
painter.draw_string(
{ x_offset, y_offset },
top_widget->style(),
message
);
shared_memory.m4_panic_msg[0] = 0;
}
return;
}
if( events & EVT_MASK_APPLICATION ) {
handle_application_queue();
}
if( events & EVT_MASK_LOCAL ) {
handle_local_queue();
}
if( events & EVT_MASK_RTC_TICK ) {
handle_rtc_tick();
}
if( events & EVT_MASK_SWITCHES ) {
handle_switches();
}
if( !display_sleep ) {
if( events & EVT_MASK_LCD_FRAME_SYNC ) {
handle_lcd_frame_sync();
}
if( events & EVT_MASK_ENCODER ) {
handle_encoder();
}
if( events & EVT_MASK_TOUCH ) {
handle_touch();
}
}
}
void EventDispatcher::handle_application_queue() {
shared_memory.application_queue.handle([](Message* const message) {
message_map.send(message);
});
}
void EventDispatcher::handle_local_queue() {
shared_memory.app_local_queue.handle([](Message* const message) {
message_map.send(message);
});
}
void EventDispatcher::handle_rtc_tick() {
sd_card::poll_inserted();
portapack::temperature_logger.second_tick();
rtc_time::on_tick_second();
}
ui::Widget* EventDispatcher::touch_widget(ui::Widget* const w, ui::TouchEvent event) {
if( !w->hidden() ) {
// To achieve reverse depth ordering (last object drawn is
// considered "top"), descend first.
for(const auto child : w->children()) {
const auto touched_widget = touch_widget(child, event);
if( touched_widget ) {
return touched_widget;
}
}
const auto r = w->screen_rect();
if( r.contains(event.point) ) {
if( w->on_touch(event) ) {
// This widget responded. Return it up the call stack.
return w;
}
}
}
return nullptr;
}
void EventDispatcher::on_touch_event(ui::TouchEvent event) {
/* TODO: Capture widget receiving the Start event, send Move and
* End events to the same widget.
*/
/* Capture Start widget.
* If touch is over Start widget at Move event, then the widget
* should be highlighted. If the touch is not over the Start
* widget at Move event, widget should un-highlight.
* If touch is over Start widget at End event, then the widget
* action should occur.
*/
if( event.type == ui::TouchEvent::Type::Start ) {
captured_widget = touch_widget(this->top_widget, event);
}
if( captured_widget ) {
captured_widget->on_touch(event);
}
}
void EventDispatcher::handle_lcd_frame_sync() {
DisplayFrameSyncMessage message;
message_map.send(&message);
painter.paint_widget_tree(top_widget);
portapack::backlight()->on();
}
void EventDispatcher::handle_switches() {
const auto switches_state = get_switches_state();
if( display_sleep ) {
// Swallow event, wake up display.
if( switches_state.any() ) {
set_display_sleep(false);
}
return;
}
for(size_t i=0; i<switches_state.size(); i++) {
// TODO: Ignore multiple keys at the same time?
if( switches_state[i] ) {
const auto event = static_cast<ui::KeyEvent>(i);
if( !event_bubble_key(event) ) {
context.focus_manager().update(top_widget, event);
}
}
}
}
void EventDispatcher::handle_encoder() {
const uint32_t encoder_now = get_encoder_position();
const int32_t delta = static_cast<int32_t>(encoder_now - encoder_last);
encoder_last = encoder_now;
const auto event = static_cast<ui::EncoderEvent>(delta);
event_bubble_encoder(event);
}
void EventDispatcher::handle_touch() {
touch_manager.feed(get_touch_frame());
}
bool EventDispatcher::event_bubble_key(const ui::KeyEvent event) {
auto target = context.focus_manager().focus_widget();
while( (target != nullptr) && !target->on_key(event) ) {
target = target->parent();
}
/* Return true if event was consumed. */
return (target != nullptr);
}
void EventDispatcher::event_bubble_encoder(const ui::EncoderEvent event) {
auto target = context.focus_manager().focus_widget();
while( (target != nullptr) && !target->on_encoder(event) ) {
target = target->parent();
}
}
void EventDispatcher::init_message_queues() {
new (&shared_memory) SharedMemory;
}
MessageHandlerRegistration::MessageHandlerRegistration(
const Message::ID message_id,
MessageHandlerMap::MessageHandler&& callback
) : message_id { message_id }
{
message_map.register_handler(message_id, std::move(callback));
}
MessageHandlerRegistration::~MessageHandlerRegistration() {
message_map.unregister_handler(message_id);
}