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Applications: Move to Userland/Applications/
This commit is contained in:
Andreas Kling
parent
aa939c4b4b
commit
dc28c07fa5
287 changed files with 1 additions and 1 deletions
208
Userland/Applications/Calculator/CalculatorWidget.cpp
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208
Userland/Applications/Calculator/CalculatorWidget.cpp
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/*
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* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
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* Copyright (c) 2021 Glenford Williams <gw_dev@outlook.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "CalculatorWidget.h"
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#include "Applications/Calculator/CalculatorGML.h"
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#include <AK/Assertions.h>
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#include <LibGUI/Button.h>
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#include <LibGUI/Label.h>
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#include <LibGUI/TextBox.h>
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#include <LibGfx/Font.h>
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#include <LibGfx/FontDatabase.h>
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#include <LibGfx/Palette.h>
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CalculatorWidget::CalculatorWidget()
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{
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load_from_gml(calculator_gml);
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m_entry = *find_descendant_of_type_named<GUI::TextBox>("entry_textbox");
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m_entry->set_relative_rect(5, 5, 244, 26);
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m_entry->set_text_alignment(Gfx::TextAlignment::CenterRight);
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m_entry->set_font(Gfx::FontDatabase::default_fixed_width_font());
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m_label = *find_descendant_of_type_named<GUI::Label>("label");
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m_label->set_frame_shadow(Gfx::FrameShadow::Sunken);
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m_label->set_frame_shape(Gfx::FrameShape::Container);
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m_label->set_frame_thickness(2);
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for (int i = 0; i < 10; i++) {
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m_digit_button[i] = *find_descendant_of_type_named<GUI::Button>(String::formatted("{}_button", i));
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add_digit_button(*m_digit_button[i], i);
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}
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m_mem_add_button = *find_descendant_of_type_named<GUI::Button>("mem_add_button");
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add_operation_button(*m_mem_add_button, Calculator::Operation::MemAdd);
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m_mem_save_button = *find_descendant_of_type_named<GUI::Button>("mem_save_button");
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add_operation_button(*m_mem_save_button, Calculator::Operation::MemSave);
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m_mem_recall_button = *find_descendant_of_type_named<GUI::Button>("mem_recall_button");
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add_operation_button(*m_mem_recall_button, Calculator::Operation::MemRecall);
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m_mem_clear_button = *find_descendant_of_type_named<GUI::Button>("mem_clear_button");
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add_operation_button(*m_mem_clear_button, Calculator::Operation::MemClear);
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m_clear_button = *find_descendant_of_type_named<GUI::Button>("clear_button");
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m_clear_button->on_click = [this](auto) {
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m_keypad.set_value(0.0);
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m_calculator.clear_operation();
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update_display();
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};
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m_clear_error_button = *find_descendant_of_type_named<GUI::Button>("clear_error_button");
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m_clear_error_button->on_click = [this](auto) {
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m_keypad.set_value(0.0);
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update_display();
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};
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m_backspace_button = *find_descendant_of_type_named<GUI::Button>("backspace_button");
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m_backspace_button->on_click = [this](auto) {
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m_keypad.type_backspace();
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update_display();
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};
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m_decimal_point_button = *find_descendant_of_type_named<GUI::Button>("decimal_button");
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m_decimal_point_button->on_click = [this](auto) {
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m_keypad.type_decimal_point();
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update_display();
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};
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m_sign_button = *find_descendant_of_type_named<GUI::Button>("sign_button");
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add_operation_button(*m_sign_button, Calculator::Operation::ToggleSign);
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m_add_button = *find_descendant_of_type_named<GUI::Button>("add_button");
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add_operation_button(*m_add_button, Calculator::Operation::Add);
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m_subtract_button = *find_descendant_of_type_named<GUI::Button>("subtract_button");
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add_operation_button(*m_subtract_button, Calculator::Operation::Subtract);
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m_multiply_button = *find_descendant_of_type_named<GUI::Button>("multiply_button");
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add_operation_button(*m_multiply_button, Calculator::Operation::Multiply);
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m_divide_button = *find_descendant_of_type_named<GUI::Button>("divide_button");
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add_operation_button(*m_divide_button, Calculator::Operation::Divide);
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m_sqrt_button = *find_descendant_of_type_named<GUI::Button>("sqrt_button");
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add_operation_button(*m_sqrt_button, Calculator::Operation::Sqrt);
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m_inverse_button = *find_descendant_of_type_named<GUI::Button>("inverse_button");
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add_operation_button(*m_inverse_button, Calculator::Operation::Inverse);
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m_percent_button = *find_descendant_of_type_named<GUI::Button>("mod_button");
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add_operation_button(*m_percent_button, Calculator::Operation::Percent);
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m_equals_button = *find_descendant_of_type_named<GUI::Button>("equal_button");
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m_equals_button->on_click = [this](auto) {
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double argument = m_keypad.value();
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double res = m_calculator.finish_operation(argument);
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m_keypad.set_value(res);
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update_display();
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};
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}
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CalculatorWidget::~CalculatorWidget()
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{
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}
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void CalculatorWidget::add_operation_button(GUI::Button& button, Calculator::Operation operation)
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{
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button.on_click = [this, operation](auto) {
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double argument = m_keypad.value();
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double res = m_calculator.begin_operation(operation, argument);
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m_keypad.set_value(res);
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update_display();
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};
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}
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void CalculatorWidget::add_digit_button(GUI::Button& button, int digit)
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{
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button.on_click = [this, digit](auto) {
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m_keypad.type_digit(digit);
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update_display();
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};
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}
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void CalculatorWidget::update_display()
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{
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m_entry->set_text(m_keypad.to_string());
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if (m_calculator.has_error())
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m_label->set_text("E");
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else
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m_label->set_text("");
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}
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void CalculatorWidget::keydown_event(GUI::KeyEvent& event)
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{
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//Clear button selection when we are typing
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m_equals_button->set_focus(true);
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m_equals_button->set_focus(false);
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if (event.key() == KeyCode::Key_Return) {
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m_keypad.set_value(m_calculator.finish_operation(m_keypad.value()));
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} else if (event.key() >= KeyCode::Key_0 && event.key() <= KeyCode::Key_9) {
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m_keypad.type_digit(atoi(event.text().characters()));
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} else if (event.key() == KeyCode::Key_Period) {
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m_keypad.type_decimal_point();
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} else if (event.key() == KeyCode::Key_Escape) {
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m_keypad.set_value(0.0);
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m_calculator.clear_operation();
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} else if (event.key() == KeyCode::Key_Backspace) {
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m_keypad.type_backspace();
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} else {
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Calculator::Operation operation;
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switch (event.key()) {
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case KeyCode::Key_Plus:
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operation = Calculator::Operation::Add;
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break;
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case KeyCode::Key_Minus:
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operation = Calculator::Operation::Subtract;
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break;
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case KeyCode::Key_Asterisk:
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operation = Calculator::Operation::Multiply;
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break;
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case KeyCode::Key_Slash:
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operation = Calculator::Operation::Divide;
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break;
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case KeyCode::Key_Percent:
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operation = Calculator::Operation::Percent;
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break;
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default:
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return;
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}
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m_keypad.set_value(m_calculator.begin_operation(operation, m_keypad.value()));
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}
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update_display();
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}
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