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80 lines
1.7 KiB
C++
80 lines
1.7 KiB
C++
//
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// Typer.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 19/06/2016.
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// Copyright © 2016 Thomas Harte. All rights reserved.
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//
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#include "Typer.hpp"
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#include <stdlib.h>
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using namespace Utility;
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Typer::Typer(const char *string, int delay, int frequency, Delegate *delegate) :
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counter_(-delay), frequency_(frequency), string_pointer_(0), delegate_(delegate), phase_(0) {
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size_t string_size = strlen(string) + 3;
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string_ = (char *)malloc(string_size);
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snprintf(string_, strlen(string) + 3, "%c%s%c", Typer::BeginString, string, Typer::EndString);
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}
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void Typer::update(int duration) {
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if(string_) {
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if(counter_ < 0 && counter_ + duration >= 0) {
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if(!type_next_character()) {
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delegate_->typer_reset(this);
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}
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}
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counter_ += duration;
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while(string_ && counter_ > frequency_) {
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counter_ -= frequency_;
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if(!type_next_character()) {
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delegate_->typer_reset(this);
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}
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}
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}
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}
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bool Typer::type_next_character() {
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if(string_ == nullptr) return false;
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if(delegate_->typer_set_next_character(this, string_[string_pointer_], phase_)) {
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phase_ = 0;
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if(!string_[string_pointer_]) {
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free(string_);
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string_ = nullptr;
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return false;
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}
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string_pointer_++;
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} else {
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phase_++;
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}
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return true;
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}
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Typer::~Typer() {
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free(string_);
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}
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#pragma mark - Delegate
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bool Typer::Delegate::typer_set_next_character(Utility::Typer *typer, char character, int phase) {
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uint16_t *sequence = sequence_for_character(typer, character);
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if(!sequence) return true;
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if(!phase) clear_all_keys();
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else {
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set_key_state(sequence[phase - 1], true);
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return sequence[phase] == Typer::Delegate::EndSequence;
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}
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return false;
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}
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uint16_t *Typer::Delegate::sequence_for_character(Typer *typer, char character) {
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return nullptr;
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}
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