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take feedback into account and modify OverflowTextblock::OnApplyTemplate to make this control customizable by other developers

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This commit is contained in:
Rudy Huyn 2019-04-16 18:09:04 -07:00
commit b83657e66f
4 changed files with 62 additions and 39 deletions
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2
src/CalcViewModel/StandardCalculatorViewModel.cpp
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@ -67,6 +67,7 @@ StandardCalculatorViewModel::StandardCalculatorViewModel() :
m_BinaryDisplayValue(L"0"),
m_OctalDisplayValue(L"0"),
m_standardCalculatorManager(&m_calculatorDisplay, &m_resourceProvider),
m_ExpressionTokens(ref new Vector<DisplayExpressionToken^>()),
m_MemorizedNumbers(ref new Vector<MemoryItemViewModel^>()),
m_IsMemoryEmpty(true),
m_IsFToEChecked(false),
@ -129,7 +130,6 @@ StandardCalculatorViewModel::StandardCalculatorViewModel() :
AreHistoryShortcutsEnabled = true;
AreProgrammerRadixOperatorsEnabled = false;
m_ExpressionTokens = ref new Vector<DisplayExpressionToken^>();
m_tokenPosition = -1;
m_isLastOperationHistoryLoad = false;
}

38
src/Calculator/Controls/OverflowTextBlock.cpp
View file

@ -30,21 +30,39 @@ DEPENDENCY_PROPERTY_INITIALIZATION(OverflowTextBlock, TokensUpdated);
void OverflowTextBlock::OnApplyTemplate()
{
assert(((m_scrollLeft == nullptr) && (m_scrollRight == nullptr)) || ((m_scrollLeft != nullptr) && (m_scrollRight != nullptr)));
UnregisterEventHandlers();
m_expressionContainer = safe_cast<ScrollViewer^>(GetTemplateChild("expressionContainer"));
auto uiElement = GetTemplateChild("expressionContainer");
if (uiElement != nullptr)
{
m_expressionContainer = safe_cast<ScrollViewer^>(uiElement);
m_expressionContainer->ChangeView(m_expressionContainer->ExtentWidth - m_expressionContainer->ViewportWidth, nullptr, nullptr);
m_expressionContainer->ViewChanged += ref new Windows::Foundation::EventHandler<Windows::UI::Xaml::Controls::ScrollViewerViewChangedEventArgs ^>(this, &CalculatorApp::Controls::OverflowTextBlock::OnViewChanged);
m_scrollLeft = safe_cast<Button^>(GetTemplateChild("scrollLeft"));
m_scrollRight = safe_cast<Button^>(GetTemplateChild("scrollRight"));
m_containerViewChangedToken = m_expressionContainer->ViewChanged += ref new EventHandler<ScrollViewerViewChangedEventArgs ^>(this, &OverflowTextBlock::OnViewChanged);
}
uiElement = GetTemplateChild("scrollLeft");
if (uiElement != nullptr)
{
m_scrollLeft = safe_cast<Button^>(uiElement);
m_scrollLeftClickEventToken = m_scrollLeft->Click += ref new RoutedEventHandler(this, &OverflowTextBlock::OnScrollClick);
}
uiElement = GetTemplateChild("scrollRight");
if (uiElement != nullptr)
{
m_scrollRight = safe_cast<Button^>(GetTemplateChild("scrollRight"));
m_scrollRightClickEventToken = m_scrollRight->Click += ref new RoutedEventHandler(this, &OverflowTextBlock::OnScrollClick);
}
m_scrollingLeft = false;
m_scrollingRight = false;
m_itemsControl = safe_cast<ItemsControl^>(GetTemplateChild("TokenList"));
uiElement = GetTemplateChild("TokenList");
if (uiElement != nullptr)
{
m_itemsControl = safe_cast<ItemsControl^>(uiElement);
}
UpdateAllState();
}
@ -189,10 +207,14 @@ void OverflowTextBlock::UnregisterEventHandlers()
{
m_scrollRight->Click -= m_scrollRightClickEventToken;
}
if (m_expressionContainer != nullptr)
{
m_expressionContainer->ViewChanged -= m_containerViewChangedToken;
}
}
void CalculatorApp::Controls::OverflowTextBlock::OnViewChanged(Platform::Object ^sender, Windows::UI::Xaml::Controls::ScrollViewerViewChangedEventArgs ^args)
void OverflowTextBlock::OnViewChanged(_In_opt_ Object^ /*sender*/, _In_opt_ ScrollViewerViewChangedEventArgs^ /*args*/)
{
UpdateScrollButtons();
}

3
src/Calculator/Controls/OverflowTextBlock.h
View file

@ -34,6 +34,7 @@ namespace CalculatorApp
void OnPointerExited(_In_ Platform::Object^ sender, _In_ Windows::UI::Xaml::Input::PointerRoutedEventArgs^ e);
void ShowHideScrollButtons(Windows::UI::Xaml::Visibility vLeft, Windows::UI::Xaml::Visibility vRight);
void OnTokensUpdatedPropertyChanged(bool oldValue, bool newValue);
void OnViewChanged(_In_opt_ Platform::Object ^sender, _In_opt_ Windows::UI::Xaml::Controls::ScrollViewerViewChangedEventArgs ^args);
void UpdateVisualState();
void UpdateExpressionState();
@ -52,7 +53,7 @@ namespace CalculatorApp
Windows::Foundation::EventRegistrationToken m_scrollLeftClickEventToken;
Windows::Foundation::EventRegistrationToken m_scrollRightClickEventToken;
void OnViewChanged(Platform::Object ^sender, Windows::UI::Xaml::Controls::ScrollViewerViewChangedEventArgs ^args);
Windows::Foundation::EventRegistrationToken m_containerViewChangedToken;
};
}
}

6
src/Calculator/Views/Calculator.xaml
View file

@ -18,20 +18,20 @@
<TextBlock Margin="2,0,0,0"
Foreground="{ThemeResource SystemControlPageTextBaseMediumBrush}"
IsTextScaleFactorEnabled="False"
Text="{x:Bind Token}"/>
Text="{x:Bind Token, Mode=OneWay}"/>
</DataTemplate>
<DataTemplate x:Key="Operator" x:DataType="common:DisplayExpressionToken">
<TextBlock Margin="2,0,0,0"
Foreground="{ThemeResource SystemControlPageTextBaseMediumBrush}"
IsTextScaleFactorEnabled="False"
Text="{x:Bind Token}"/>
Text="{x:Bind Token, Mode=OneWay}"/>
</DataTemplate>
<DataTemplate x:Key="Separator" x:DataType="common:DisplayExpressionToken">
<TextBlock x:Name="MainText"
IsTextScaleFactorEnabled="False"
Text="{x:Bind Token}"/>
Text="{x:Bind Token, Mode=OneWay}"/>
</DataTemplate>
<!-- TextBox Styles -->