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calculator_邵卿宇_无35 #8

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66 changes: 60 additions & 6 deletions MAUICalculator/SubPage.xaml
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Original file line number Diff line number Diff line change
Expand Up @@ -3,10 +3,64 @@
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="MAUICalculator.SubPage"
Title="Advanced Calculator">
<VerticalStackLayout>
<Label
Text="Implement your advanced calculaor here!"
VerticalOptions="Center"
HorizontalOptions="Center" />
</VerticalStackLayout>

<Grid RowSpacing="6" ColumnSpacing="6" Margin="20">
<!-- 设置七行四列的网格 -->
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>

<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>

<!-- 显示计算结果 -->
<Label x:Name="displayLabel" Text="0" FontSize="Large" HorizontalTextAlignment="End" Grid.Row="0" Grid.ColumnSpan="4" />

<!-- 第一行：AC、DEL、切换回主页面、除法 -->
<Button Text="AC" Background="LightSkyBlue" Clicked="OnClearClicked" Grid.Row="1" Grid.Column="0"/>
<Button Text="DEL" Background="LightSkyBlue" Clicked="OnDeleteClicked" Grid.Row="1" Grid.Column="1"/>
<Button Text="Main" Background="LightSkyBlue" Clicked="OnMainPageClicked" Grid.Row="1" Grid.Column="2"/>
<Button Text="/" Background="LightSkyBlue" Clicked="OnOperatorClicked" Grid.Row="1" Grid.Column="3"/>

<!-- 第二行：7、8、9、乘法 -->
<Button Text="7" Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="2" Grid.Column="0"/>
<Button Text="8" Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="2" Grid.Column="1"/>
<Button Text="9" Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="2" Grid.Column="2"/>
<Button Text="*" Background="LightSkyBlue" Clicked="OnOperatorClicked" Grid.Row="2" Grid.Column="3"/>

<!-- 第三行：4、5、6、减法 -->
<Button Text="4" Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="3" Grid.Column="0"/>
<Button Text="5" Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="3" Grid.Column="1"/>
<Button Text="6" Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="3" Grid.Column="2"/>
<Button Text="-" Background="LightSkyBlue" Clicked="OnOperatorClicked" Grid.Row="3" Grid.Column="3"/>

<!-- 第四行：1、2、3、加法 -->
<Button Text="1" Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="4" Grid.Column="0"/>
<Button Text="2" Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="4" Grid.Column="1"/>
<Button Text="3" Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="4" Grid.Column="2"/>
<Button Text="+" Background="LightSkyBlue" Clicked="OnOperatorClicked" Grid.Row="4" Grid.Column="3"/>

<!-- 第五行：0、小数点、等号 -->
<Button Text="0" Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="5" Grid.Column="0" Grid.ColumnSpan="2"/>
<Button Text="." Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="5" Grid.Column="2"/>
<Button Text="=" Background="LightSkyBlue" Clicked="OnEqualClicked" Grid.Row="5" Grid.Column="3"/>

<!-- 第六行：乘方、对数、开根号、阶乘 -->
<Button Text="x^y" Background="LightSkyBlue" Clicked="OnAdvancedOperatorClicked" Grid.Row="6" Grid.Column="0"/>
<Button Text="lg" Background="LightSkyBlue" Clicked="OnAdvancedOperatorClicked" Grid.Row="6" Grid.Column="1"/>
<Button Text="√" Background="LightSkyBlue" Clicked="OnAdvancedOperatorClicked" Grid.Row="6" Grid.Column="2"/>
<Button Text="x!" Background="LightSkyBlue" Clicked="OnAdvancedOperatorClicked" Grid.Row="6" Grid.Column="3"/>

</Grid>

</ContentPage>
219 changes: 214 additions & 5 deletions MAUICalculator/SubPage.xaml.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,217 @@ namespace MAUICalculator;

public partial class SubPage : ContentPage
{
public SubPage()
{
InitializeComponent();
}
}
private double currentNumber = 0;
private double lastNumber = 0;
private string currentOperator = "";
private bool isResult = false;

public SubPage()
{
InitializeComponent();
}

private void OnNumberClicked(object sender, EventArgs e)
{
var button = sender as Button;
var number = button.Text;

if (isResult || displayLabel.Text == "0")
{
displayLabel.Text = "";
if (number == ".")
displayLabel.Text = "0";
isResult = false;
}

displayLabel.Text += number;
currentNumber = double.Parse(displayLabel.Text);
}

private void OnOperatorClicked(object sender, EventArgs e)
{
var button = sender as Button;
var op = button.Text;

if (isResult && currentOperator == "")
{
isResult = false;
displayLabel.Text = "0";
}

if (currentOperator != "")
{
if (!isResult)
{
Calculate();
displayLabel.Text = lastNumber.ToString();
isResult = true;
}
}
else
{
lastNumber = currentNumber;
displayLabel.Text = "0";
isResult = false;
}

currentOperator = op;
}

private void OnEqualClicked(object sender, EventArgs e)
{
if (currentOperator != "")
{
Calculate();
displayLabel.Text = lastNumber.ToString();
isResult = true;
currentOperator = "";
}
}

private void OnClearClicked(object sender, EventArgs e)
{
currentNumber = 0;
lastNumber = 0;
currentOperator = "";
isResult = false;
displayLabel.Text = "0";
}

private void OnDeleteClicked(object sender, EventArgs e)
{
if (displayLabel.Text.Length > 0)
{
if (displayLabel.Text == lastNumber.ToString() && isResult)
{
displayLabel.Text = "0";
isResult = false;
}
else
{
displayLabel.Text = displayLabel.Text.Substring(0, displayLabel.Text.Length - 1);
if (displayLabel.Text.Length == 0 || displayLabel.Text == "-")
displayLabel.Text = "0";
}

currentNumber = double.TryParse(displayLabel.Text, out double parsedValue) ? parsedValue : 0;
}
}

private async void OnMainPageClicked(object sender, EventArgs e)
{
await Shell.Current.GoToAsync("//MainPage");
}

private void OnAdvancedOperatorClicked(object sender, EventArgs e)
{
var button = sender as Button;
var op = button.Text;

switch (op)
{
case "x^y":
if (currentOperator == "x^y" && !isResult)
{
// ���֮ǰ�Ѿ�ѡ���˳˷����������һ�û�еõ����
lastNumber = Math.Pow(lastNumber, currentNumber);
displayLabel.Text = lastNumber.ToString();
isResult = true;
}
else
{
// ���浱ǰ����Ļ���
lastNumber = currentNumber;
currentOperator = "x^y"; // ������
isResult = false;
displayLabel.Text = "0"; // ׼������ָ��
}
break;
case "lg":
if (currentNumber <= 0)
{
displayLabel.Text = "Error";
}
else
{
lastNumber = Math.Log10(currentNumber);
displayLabel.Text = lastNumber.ToString();
}
isResult = true;
break;
case "��":
if (currentNumber < 0)
{
displayLabel.Text = "Error";
}
else
{
lastNumber = Math.Sqrt(currentNumber);
displayLabel.Text = lastNumber.ToString();
}
isResult = true;
break;
case "x!":
if (currentNumber < 0 || currentNumber != (int)currentNumber)
{
displayLabel.Text = "Error";
}
else
{
lastNumber = Factorial((int)currentNumber);
displayLabel.Text = lastNumber.ToString();
}
isResult = true;
break;
default:
break;
}
}

private void Calculate()
{
switch (currentOperator)
{
case "+":
lastNumber += currentNumber;
break;
case "-":
lastNumber -= currentNumber;
break;
case "*":
lastNumber *= currentNumber;
break;
case "/":
if (currentNumber == 0)
{
displayLabel.Text = "Error";
return;
}
lastNumber /= currentNumber;
break;
case "x^y":
lastNumber = Math.Pow(lastNumber, currentNumber);
break;
default:
break;
}
lastNumber = Math.Round(lastNumber, 4);
currentNumber = lastNumber;
}

private double Factorial(int n)
{
if (n < 0)
return double.NaN; // Return NaN for negative inputs
if (n == 0 || n == 1)
return 1;
double result = 1;
for (int i = 2; i <= n; i++)
{
result *= i;
}
return result;
}
}