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Calculator_庞炜耀_无32 #10

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Calculator_庞炜耀_无32 #10

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2 changes: 2 additions & 0 deletions MAUICalculator/AppShell.xaml.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,5 +6,7 @@ public AppShell()
{
InitializeComponent();
}


}
}
3 changes: 2 additions & 1 deletion MAUICalculator/MainPage.xaml
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,8 @@
<Label x:Name="displayLabel" Text="0" FontSize="Large" HorizontalTextAlignment="End" Grid.Row="0" Grid.ColumnSpan="4" />

<!-- 使用Button创建键盘按钮，并占据特定的Grid位置，设置Clicked事件处理程序 -->
<Button Text="AC" Background="LightSkyBlue" Clicked="OnClearClicked" Grid.Row="1" Grid.Column="0" Grid.RowSpan="1" Grid.ColumnSpan="3"/>
<Button Text="AC" Background="MediumVioletRed" Clicked="OnClearClicked" Grid.Row="1" Grid.Column="1" Grid.RowSpan="1" Grid.ColumnSpan="2"/>
<Button Text="DEL" Background="Red" Clicked="OnDelClicked" Grid.Row="1" Grid.Column="0"/>
<Button Text="/" Background="LightSkyBlue" Clicked="OnOperatorClicked" Grid.Row="1" Grid.Column="3"/>

<Button Text="7" Background="LightSkyBlue" Clicked="OnNumberClicked" Grid.Row="2" Grid.Column="0"/>
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75 changes: 58 additions & 17 deletions MAUICalculator/MainPage.xaml.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,26 +3,29 @@
public partial class MainPage : ContentPage
{
int count = 0;

public double currentNumber = 0;
public double lastNumber = 0;
public string currentOperator = "";
public bool isResult = false;
//public static Label displayLabel;
public MainPage()
{
InitializeComponent();
}

public string GetDisplayText()
{
return displayLabel.Text;
}
// 定义一些变量来存储当前输入的数字，当前选择的运算符，以及上一次计算的结果
private double currentNumber = 0;
private double lastNumber = 0;
private string currentOperator = "";
private bool isResult = false;


// 定义OnNumberClicked方法来处理数字按钮点击事件
private void OnNumberClicked(object sender, EventArgs e)
{
// 获取按钮的文本值
var button = sender as Button;
var number = button.Text;

// 如果当前显示的是结果，或者是0，就清空显示屏
if (isResult || displayLabel.Text == "0")
{
displayLabel.Text = "";
Expand All @@ -31,41 +34,47 @@ private void OnNumberClicked(object sender, EventArgs e)
isResult = false;
}

// 将数字追加到显示屏，并更新当前输入的数字
displayLabel.Text += number;
currentNumber = double.Parse(displayLabel.Text);
}

// 定义OnOperatorClicked方法来处理运算符按钮点击事件
private void OnOperatorClicked(object sender, EventArgs e)
{
// 获取按钮的文本值
var button = sender as Button;
var op = button.Text;

// 如果当前的运算符不为空，就执行上一次选择的运算，并显示结果
if (currentOperator != "")
// 如果当前显示的是结果，或者没有数字输入，不进行运算，只更新当前运算符
if (isResult || currentOperator != "")
{
currentOperator = op;
isResult = false;
return;
}

// 如果当前的运算符不为空，并且有有效的数字输入，才执行计算
if (!string.IsNullOrEmpty(currentOperator))
{
Calculate();
displayLabel.Text = lastNumber.ToString();
isResult = true;
}
else
{
// 否则，就将当前输入的数字赋值给上一次计算的结果
// 否则，将当前输入的数字赋值给上一次计算的结果
lastNumber = currentNumber;
displayLabel.Text = "0";
isResult = false;
}

// 将当前选择的运算符赋值给变量，并清空当前输入的数字
// 更新当前选择的运算符
currentOperator = op;
}


// 定义OnEqualClicked方法来处理等号按钮点击事件
private void OnEqualClicked(object sender, EventArgs e)
{
// 如果当前选择的运算符不为空，就执行上一次选择的运算，并显示结果
if (currentOperator != "")
{
Calculate();
Expand All @@ -75,7 +84,7 @@ private void OnEqualClicked(object sender, EventArgs e)
}
}

// 定义OnEqualClicked方法来处理等号按钮点击事件
// 定义OnClearClicked方法来处理清除按钮点击事件
private void OnClearClicked(object sender, EventArgs e)
{
currentNumber = 0;
Expand All @@ -85,10 +94,43 @@ private void OnClearClicked(object sender, EventArgs e)
displayLabel.Text = lastNumber.ToString();
}

// 定义OnDelClicked方法来处理DEL按钮点击事件
private void OnDelClicked(object sender, EventArgs e)
{
// 如果显示的是结果，则清空显示但保留lastNumber
if (isResult)
{
displayLabel.Text = "0";
isResult = false;
return;
}

// 如果显示不为空，删除最后一个字符
if (!string.IsNullOrEmpty(displayLabel.Text))
{
displayLabel.Text = displayLabel.Text.Substring(0, displayLabel.Text.Length - 1);

// 如果删除后显示为空，则重置为0
if (string.IsNullOrEmpty(displayLabel.Text))
{
displayLabel.Text = "0";
}

// 更新currentNumber
if (double.TryParse(displayLabel.Text, out double number))
{
currentNumber = number;
}
else
{
currentNumber = 0;
}
}
}

// 定义Calculate方法来执行运算逻辑
private void Calculate()
{
// 根据当前选择的运算符，对上一次计算的结果和当前输入的数字进行相应的运算，并更新上一次计算的结果
switch (currentOperator)
{
case "+":
Expand All @@ -110,5 +152,4 @@ private void Calculate()
currentNumber = lastNumber;
}
}

}
60 changes: 51 additions & 9 deletions MAUICalculator/SubPage.xaml
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Original file line number Diff line number Diff line change
@@ -1,12 +1,54 @@
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
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>
</ContentPage>
x:Class="MAUICalculator.SubPage">

<Grid RowSpacing="6" ColumnSpacing="6" Margin="20">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>

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

<!-- Display Label -->
<Label x:Name="displayLabel" Grid.Row="0" Grid.ColumnSpan="4" Text="0" FontSize="36" HorizontalOptions="End" VerticalOptions="Center" />

<!-- Scientific Functions -->
<Button Text="x^y" Grid.Row="1" Grid.Column="0" Clicked="OnPowerClicked" />
<Button Text="√x" Grid.Row="1" Grid.Column="1" Clicked="OnSqrtClicked" />
<Button Text="lg(x)" Grid.Row="1" Grid.Column="2" Clicked="OnLogClicked" />
<Button Text="ln(x)" Grid.Row="1" Grid.Column="3" Clicked="OnLnClicked" />

<!-- Trigonometric Functions -->
<Button Text="sin" Grid.Row="2" Grid.Column="0" Clicked="OnSinClicked" />
<Button Text="cos" Grid.Row="2" Grid.Column="1" Clicked="OnCosClicked" />
<Button Text="tan" Grid.Row="2" Grid.Column="2" Clicked="OnTanClicked" />
<Button Text="x!" Grid.Row="2" Grid.Column="3" Clicked="OnFactorialClicked" />

<!-- Constants -->
<Button Text="π" Grid.Row="3" Grid.Column="0" Clicked="OnPiClicked" />
<Button Text="e" Grid.Row="3" Grid.Column="1" Clicked="OnEClicked" />

<!-- Add basic operations as well -->
<Button Text="+" Grid.Row="4" Grid.Column="0" Clicked="OnOperatorClicked" />
<Button Text="-" Grid.Row="4" Grid.Column="1" Clicked="OnOperatorClicked" />
<Button Text="*" Grid.Row="4" Grid.Column="2" Clicked="OnOperatorClicked" />
<Button Text="/" Grid.Row="4" Grid.Column="3" Clicked="OnOperatorClicked" />

<!-- Clear, Delete, Equals -->
<Button Text="DEL" Grid.Row="5" Grid.Column="0" Clicked="OnDelClicked" />
<Button Text="AC" Grid.Row="5" Grid.Column="1" Clicked="OnClearClicked" />
<Button Text="=" Grid.Row="5" Grid.Column="2" Grid.ColumnSpan="2" Clicked="OnEqualClicked" />

</Grid>
</ContentPage>
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