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/*
* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
* Copyright (c) 2021, Glenford Williams <gw_dev@outlook.com>
* Copyright (c) 2021, Max Wipfli <mail@maxwipfli.ch>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "CalculatorWidget.h"
#include <Applications/Calculator/CalculatorGML.h>
#include <LibGUI/Button.h>
#include <LibGUI/Label.h>
#include <LibGUI/TextBox.h>
#include <LibGfx/Font.h>
#include <LibGfx/Palette.h>
CalculatorWidget::CalculatorWidget()
{
load_from_gml(calculator_gml);
m_entry = *find_descendant_of_type_named<GUI::TextBox>("entry_textbox");
m_entry->set_relative_rect(5, 5, 244, 26);
m_entry->set_text_alignment(Gfx::TextAlignment::CenterRight);
m_label = *find_descendant_of_type_named<GUI::Label>("label");
m_label->set_frame_shadow(Gfx::FrameShadow::Sunken);
m_label->set_frame_shape(Gfx::FrameShape::Container);
m_label->set_frame_thickness(2);
for (int i = 0; i < 10; i++) {
m_digit_button[i] = *find_descendant_of_type_named<GUI::Button>(String::formatted("{}_button", i));
add_digit_button(*m_digit_button[i], i);
}
m_mem_add_button = *find_descendant_of_type_named<GUI::Button>("mem_add_button");
add_operation_button(*m_mem_add_button, Calculator::Operation::MemAdd);
m_mem_save_button = *find_descendant_of_type_named<GUI::Button>("mem_save_button");
add_operation_button(*m_mem_save_button, Calculator::Operation::MemSave);
m_mem_recall_button = *find_descendant_of_type_named<GUI::Button>("mem_recall_button");
add_operation_button(*m_mem_recall_button, Calculator::Operation::MemRecall);
m_mem_clear_button = *find_descendant_of_type_named<GUI::Button>("mem_clear_button");
add_operation_button(*m_mem_clear_button, Calculator::Operation::MemClear);
m_clear_button = *find_descendant_of_type_named<GUI::Button>("clear_button");
m_clear_button->on_click = [this](auto) {
m_keypad.set_value(0.0);
m_calculator.clear_operation();
update_display();
};
m_clear_error_button = *find_descendant_of_type_named<GUI::Button>("clear_error_button");
m_clear_error_button->on_click = [this](auto) {
m_keypad.set_value(0.0);
update_display();
};
m_backspace_button = *find_descendant_of_type_named<GUI::Button>("backspace_button");
m_backspace_button->on_click = [this](auto) {
m_keypad.type_backspace();
update_display();
};
m_decimal_point_button = *find_descendant_of_type_named<GUI::Button>("decimal_button");
m_decimal_point_button->on_click = [this](auto) {
m_keypad.type_decimal_point();
update_display();
};
m_sign_button = *find_descendant_of_type_named<GUI::Button>("sign_button");
add_operation_button(*m_sign_button, Calculator::Operation::ToggleSign);
m_add_button = *find_descendant_of_type_named<GUI::Button>("add_button");
add_operation_button(*m_add_button, Calculator::Operation::Add);
m_subtract_button = *find_descendant_of_type_named<GUI::Button>("subtract_button");
add_operation_button(*m_subtract_button, Calculator::Operation::Subtract);
m_multiply_button = *find_descendant_of_type_named<GUI::Button>("multiply_button");
add_operation_button(*m_multiply_button, Calculator::Operation::Multiply);
m_divide_button = *find_descendant_of_type_named<GUI::Button>("divide_button");
add_operation_button(*m_divide_button, Calculator::Operation::Divide);
m_sqrt_button = *find_descendant_of_type_named<GUI::Button>("sqrt_button");
add_operation_button(*m_sqrt_button, Calculator::Operation::Sqrt);
m_inverse_button = *find_descendant_of_type_named<GUI::Button>("inverse_button");
add_operation_button(*m_inverse_button, Calculator::Operation::Inverse);
m_percent_button = *find_descendant_of_type_named<GUI::Button>("mod_button");
add_operation_button(*m_percent_button, Calculator::Operation::Percent);
m_equals_button = *find_descendant_of_type_named<GUI::Button>("equal_button");
m_equals_button->on_click = [this](auto) {
double argument = m_keypad.value();
double res = m_calculator.finish_operation(argument);
m_keypad.set_value(res);
update_display();
};
}
CalculatorWidget::~CalculatorWidget()
{
}
void CalculatorWidget::add_operation_button(GUI::Button& button, Calculator::Operation operation)
{
button.on_click = [this, operation](auto) {
double argument = m_keypad.value();
double res = m_calculator.begin_operation(operation, argument);
m_keypad.set_value(res);
update_display();
};
}
void CalculatorWidget::add_digit_button(GUI::Button& button, int digit)
{
button.on_click = [this, digit](auto) {
m_keypad.type_digit(digit);
update_display();
};
}
String CalculatorWidget::get_entry()
{
return m_entry->text();
}
void CalculatorWidget::set_entry(double value)
{
m_keypad.set_value(value);
update_display();
}
void CalculatorWidget::update_display()
{
m_entry->set_text(m_keypad.to_string());
if (m_calculator.has_error())
m_label->set_text("E");
else
m_label->set_text("");
}
void CalculatorWidget::keydown_event(GUI::KeyEvent& event)
{
//Clear button selection when we are typing
m_equals_button->set_focus(true);
m_equals_button->set_focus(false);
if (event.key() == KeyCode::Key_Return) {
m_keypad.set_value(m_calculator.finish_operation(m_keypad.value()));
} else if (event.code_point() >= '0' && event.code_point() <= '9') {
m_keypad.type_digit(event.code_point() - '0');
} else if (event.code_point() == '.') {
m_keypad.type_decimal_point();
} else if (event.key() == KeyCode::Key_Escape) {
m_keypad.set_value(0.0);
m_calculator.clear_operation();
} else if (event.key() == KeyCode::Key_Backspace) {
m_keypad.type_backspace();
} else {
Calculator::Operation operation;
switch (event.code_point()) {
case '+':
operation = Calculator::Operation::Add;
break;
case '-':
operation = Calculator::Operation::Subtract;
break;
case '*':
operation = Calculator::Operation::Multiply;
break;
case '/':
operation = Calculator::Operation::Divide;
break;
case '%':
operation = Calculator::Operation::Percent;
break;
default:
return;
}
m_keypad.set_value(m_calculator.begin_operation(operation, m_keypad.value()));
}
update_display();
}
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