// Copyright (c) 2017-2021, Mudita Sp. z.o.o. All rights reserved.
// For licensing, see https://github.com/mudita/MuditaOS/LICENSE.md
#include "CalculatorMainWindow.hpp"
#include "application-calculator/widgets/CalculatorStyle.hpp"
#include "application-calculator/data/CalculatorUtility.hpp"
#include <i18n/i18n.hpp>
namespace gui
{
CalculatorMainWindow::CalculatorMainWindow(app::Application *app, std::string name) : AppWindow(app, name)
{
buildInterface();
}
void CalculatorMainWindow::buildInterface()
{
AppWindow::buildInterface();
setTitle(utils::localize.get("app_calculator_title_main"));
bottomBar->setActive(gui::BottomBar::Side::CENTER, true);
bottomBar->setActive(gui::BottomBar::Side::RIGHT, true);
bottomBar->setActive(gui::BottomBar::Side::LEFT, true);
bottomBar->setText(gui::BottomBar::Side::RIGHT, utils::localize.get(style::strings::common::back));
bottomBar->setText(gui::BottomBar::Side::CENTER, utils::localize.get(style::calculator::equals));
bottomBar->setText(gui::BottomBar::Side::LEFT, utils::localize.get(style::calculator::decimal_separator));
bottomBar->setFont(BottomBar::Side::LEFT, style::window::font::largelight);
mathOperationInput = new gui::Text(this,
style::calculator::window::input_margin,
style::calculator::window::input_offset_top,
style::calculator::window::input_width,
style::calculator::window::input_height);
mathOperationInput->setEdges(gui::RectangleEdge::Bottom);
mathOperationInput->setAlignment(
gui::Alignment(gui::Alignment::Horizontal::Right, gui::Alignment::Vertical::Center));
mathOperationInput->setFont(style::window::font::supersizemelight);
mathOperationInput->setInputMode(new InputMode({InputMode::digit}));
mathOperationInput->setPenFocusWidth(style::window::default_border_focus_w);
mathOperationInput->setPenWidth(style::window::default_border_rect_no_focus);
mathOperationInput->setEditMode(gui::EditMode::Edit);
mathBox = new gui::MathOperationsBox(this,
style::calculator::window::math_box_offset_top,
style::window::default_body_width,
style::calculator::window::math_box_height,
style::calculator::window::math_box_cell_width,
style::calculator::window::math_box_cell_height);
addWidget(mathBox);
setFocusItem(mathOperationInput);
applyInputCallback();
}
void CalculatorMainWindow::applyInputCallback()
{
mathOperationInput->inputCallback = [&](Item &item, const InputEvent &event) {
if (clearInput) {
mathOperationInput->clear();
clearInput = false;
}
if (event.isLongPress() && event.is(gui::KeyCode::KEY_PND)) {
mathOperationInput->clear();
return true;
}
if (!event.isShortPress()) {
return false;
}
if (event.is(gui::KeyCode::KEY_0) && mathOperationInput->getText() == "0") {
return true;
}
auto lastChar = mathOperationInput->getText()[mathOperationInput->getText().length() - 1];
bool lastCharIsSymbol = isSymbol(lastChar);
if (lastChar == style::calculator::symbols::codes::zero && isSymbol(getPenultimate()) &&
!isDecimalSeparator(getPenultimate()) && event.is(gui::KeyCode::KEY_0)) {
return true;
}
if (event.keyCode == gui::KeyCode::KEY_UP) {
writeEquation(lastCharIsSymbol, style::calculator::symbols::strings::plus);
return true;
}
if (event.keyCode == gui::KeyCode::KEY_DOWN) {
if (lastChar != style::calculator::symbols::codes::minus) {
writeEquation(lastCharIsSymbol, style::calculator::symbols::strings::minus);
}
return true;
}
if (event.keyCode == gui::KeyCode::KEY_LEFT) {
writeEquation(lastCharIsSymbol, style::calculator::symbols::strings::multiplication);
return true;
}
if (event.keyCode == gui::KeyCode::KEY_RIGHT) {
writeEquation(lastCharIsSymbol, style::calculator::symbols::strings::division);
return true;
}
if (event.keyCode == gui::KeyCode::KEY_LF) {
if (!isPreviousNumberDecimal()) {
writeEquation(lastCharIsSymbol, utils::localize.get("app_calculator_decimal_separator"));
}
return true;
}
if (lastChar == style::calculator::symbols::codes::zero && isSymbol(getPenultimate()) &&
!isDecimalSeparator(getPenultimate()) && !event.is(gui::KeyCode::KEY_0) &&
!event.is(gui::KeyCode::KEY_PND) && !event.is(gui::KeyCode::KEY_ENTER)) {
mathOperationInput->removeChar();
return false;
}
if (!event.is(gui::KeyCode::KEY_0) && !event.is(gui::KeyCode::KEY_ENTER) &&
mathOperationInput->getText() == "0") {
mathOperationInput->clear();
}
return false;
};
}
bool CalculatorMainWindow::isSymbol(uint32_t character)
{
return character == style::calculator::symbols::codes::plus ||
character == style::calculator::symbols::codes::minus ||
character == style::calculator::symbols::codes::division ||
character == style::calculator::symbols::codes::multiplication ||
character == style::calculator::symbols::codes::comma ||
character == style::calculator::symbols::codes::full_stop;
}
bool CalculatorMainWindow::isDecimalSeparator(uint32_t character)
{
return character == style::calculator::symbols::codes::comma ||
character == style::calculator::symbols::codes::full_stop;
}
uint32_t CalculatorMainWindow::getPenultimate()
{
if (mathOperationInput->getText().length() > 1) {
return mathOperationInput->getText()[mathOperationInput->getText().length() - 2];
}
return 0;
}
void CalculatorMainWindow::writeEquation(bool lastCharIsSymbol, const UTF8 &symbol)
{
if (!mathOperationInput->getText().empty()) {
if (lastCharIsSymbol && symbol != style::calculator::symbols::strings::minus) {
if (!isSymbol(getPenultimate()) && mathOperationInput->getText().length() > 1) {
mathOperationInput->removeChar();
mathOperationInput->addText(symbol);
}
}
else {
mathOperationInput->addText(symbol);
}
}
else if (symbol == style::calculator::symbols::strings::minus) {
mathOperationInput->addText(symbol);
}
}
bool CalculatorMainWindow::isPreviousNumberDecimal()
{
if (!mathOperationInput->getText().empty()) {
std::vector<int> symbolsIndexes;
auto input = std::string(mathOperationInput->getText()).erase(mathOperationInput->getText().length() - 1);
auto exponentIndex = input.find_last_of('e');
auto minusIndex = input.find_last_of(style::calculator::symbols::strings::minus);
if (minusIndex != exponentIndex + 1) {
symbolsIndexes.push_back(minusIndex);
}
symbolsIndexes.push_back(input.find_last_of(style::calculator::symbols::strings::plus));
symbolsIndexes.push_back(input.find_last_of(style::calculator::symbols::strings::division));
symbolsIndexes.push_back(input.find_last_of(style::calculator::symbols::strings::multiplication));
auto it = std::max_element(symbolsIndexes.begin(), symbolsIndexes.end());
std::string lastNumber;
if (*it == -1) {
lastNumber = input.substr(0, std::string::npos);
}
else {
lastNumber = input.substr(*it, std::string::npos);
}
return lastNumber.find(utils::localize.get("app_calculator_decimal_separator")) != std::string::npos;
}
return false;
}
bool CalculatorMainWindow::onInput(const gui::InputEvent &inputEvent)
{
if (AppWindow::onInput(inputEvent)) {
return true;
}
if (!inputEvent.isShortPress()) {
return false;
}
if (inputEvent.keyCode == gui::KeyCode::KEY_ENTER) {
auto result = Calculator().calculate(std::string(mathOperationInput->getText()));
mathOperationInput->setText(result.value);
clearInput = result.isError;
return true;
}
return false;
}
} // namespace gui