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Modify how narrator names the first and last bits of a number in Bit Flip (#675)

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* Replace 0th by "least significant bit"

* Add support of Most Significant Bit

* Fix issue with narrator not updating text of some bits
This commit is contained in:
Rudy Huyn
2019-09-27 10:39:50 -07:00
committed by Pepe Rivera
parent 9a099acb3a
commit 5c0785743c
3 changed files with 62 additions and 23 deletions
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63
src/Calculator/Views/CalculatorProgrammerBitFlipPanel.xaml.cpp
View File

@@ -50,6 +50,7 @@ void CalculatorProgrammerBitFlipPanel::SubscribePropertyChanged()
if (Model != nullptr)
{
m_propertyChangedToken = Model->PropertyChanged += ref new PropertyChangedEventHandler(this, &CalculatorProgrammerBitFlipPanel::OnPropertyChanged);
m_currentValueBitLength = Model->ValueBitLength;
UpdateCheckedStates(true);
}
}
@@ -68,8 +69,10 @@ void CalculatorProgrammerBitFlipPanel::OnPropertyChanged(Object ^ sender, Proper
if (e->PropertyName == StandardCalculatorViewModel::BinaryDigitsPropertyName)
{
UpdateCheckedStates(false);
m_currentValueBitLength = Model->ValueBitLength;
}
else if (e->PropertyName == StandardCalculatorViewModel::IsBitFlipCheckedPropertyName
else if (
e->PropertyName == StandardCalculatorViewModel::IsBitFlipCheckedPropertyName
|| e->PropertyName == StandardCalculatorViewModel::IsProgrammerPropertyName)
{
if (Model->IsBitFlipChecked && Model->IsProgrammer)
@@ -190,14 +193,20 @@ void CalculatorProgrammerBitFlipPanel::UpdateCheckedStates(bool updateAutomation
m_updatingCheckedStates = true;
auto it = m_flipButtons.begin();
int index = 0;
bool mustUpdateTextOfMostSignificantDigits = m_currentValueBitLength != Model->ValueBitLength;
int previousMSDPosition = GetIndexOfLastBit(m_currentValueBitLength);
int newMSDPosition = GetIndexOfLastBit(Model->ValueBitLength);
for (bool val : Model->BinaryDigits)
{
FlipButtons ^ flipButton = *it;
if (updateAutomationPropertiesNames)
{
flipButton->SetValue(AutomationProperties::NameProperty, GenerateAutomationPropertiesName(index, flipButton->IsChecked->Value));
}
bool hasValueChanged = flipButton->IsChecked->Value != val;
flipButton->IsChecked = val;
if (updateAutomationPropertiesNames
|| hasValueChanged
|| (mustUpdateTextOfMostSignificantDigits && (index == previousMSDPosition || index == newMSDPosition)))
{
flipButton->SetValue(AutomationProperties::NameProperty, GenerateAutomationPropertiesName(index, val));
}
++it;
++index;
}
@@ -215,29 +224,53 @@ void CalculatorProgrammerBitFlipPanel::UpdateAutomationPropertiesNames()
}
bool CalculatorProgrammerBitFlipPanel::ShouldEnableBit(BitLength length, int index)
{
return index <= GetIndexOfLastBit(length);
}
int CalculatorProgrammerBitFlipPanel::GetIndexOfLastBit(BitLength length) const
{
switch (length)
{
case BitLength::BitLengthQWord:
return index <= 63;
return 63;
case BitLength::BitLengthDWord:
return index <= 31;
return 31;
case BitLength::BitLengthWord:
return index <= 15;
return 15;
case BitLength::BitLengthByte:
return index <= 7;
return 7;
}
return false;
return -1;
}
String ^ CalculatorProgrammerBitFlipPanel::GenerateAutomationPropertiesName(int position, bool value) const
String ^ CalculatorProgrammerBitFlipPanel::GenerateAutomationPropertiesName(int position, bool value)
{
auto resourceLoader = AppResourceProvider::GetInstance();
String ^ indexName = resourceLoader.GetResourceString(ref new Platform::String(to_wstring(position).c_str()));
String ^ automationNameTemplate = resourceLoader.GetResourceString(L"BitFlipItemAutomationName");
String ^ bitPositionTemplate = resourceLoader.GetResourceString(L"BitPosition");
wstring bitPosition;
if (position == 0)
{
bitPosition = wstring(resourceLoader.GetResourceString(L"LeastSignificantBit")->Data());
}
else
{
int lastPosition = -1;
if (Model != nullptr)
{
lastPosition = GetIndexOfLastBit(Model->ValueBitLength);
}
wstring bitPosition = LocalizationStringUtil::GetLocalizedString(bitPositionTemplate->Data(), indexName->Data());
if (position == lastPosition)
{
bitPosition = wstring(resourceLoader.GetResourceString(L"MostSignificantBit")->Data());
}
else
{
String ^ indexName = resourceLoader.GetResourceString(ref new Platform::String(to_wstring(position).c_str()));
String ^ bitPositionTemplate = resourceLoader.GetResourceString(L"BitPosition");
bitPosition = LocalizationStringUtil::GetLocalizedString(bitPositionTemplate->Data(), indexName->Data());
}
}
return ref new String(LocalizationStringUtil::GetLocalizedString(automationNameTemplate->Data(), bitPosition.c_str(), value ? L"1" : L"0").c_str());
}

6
src/Calculator/Views/CalculatorProgrammerBitFlipPanel.xaml.h
View File

@@ -22,7 +22,7 @@ namespace CalculatorApp
bool ShouldEnableBit(CalculatorApp::Common::BitLength length, int index);
property CalculatorApp::ViewModel::StandardCalculatorViewModel
^ Model { CalculatorApp::ViewModel::StandardCalculatorViewModel ^ get(); }
^ Model { CalculatorApp::ViewModel::StandardCalculatorViewModel ^ get(); }
private : void OnLoaded(Platform::Object ^ sender, Windows::UI::Xaml::RoutedEventArgs ^ e);
void OnUnloaded(Platform::Object ^ sender, Windows::UI::Xaml::RoutedEventArgs ^ e);
@@ -37,12 +37,14 @@ namespace CalculatorApp
private:
Windows::Foundation::EventRegistrationToken m_propertyChangedToken;
Platform::String ^ GenerateAutomationPropertiesName(int position, bool value) const;
Platform::String ^ GenerateAutomationPropertiesName(int position, bool value);
void UpdateCheckedStates(bool updateAutomationPropertiesNames);
void UpdateAutomationPropertiesNames();
int GetIndexOfLastBit(CalculatorApp::Common::BitLength length) const;
static const unsigned int s_numBits = 64;
std::array<CalculatorApp::Controls::FlipButtons ^, s_numBits> m_flipButtons;
bool m_updatingCheckedStates;
CalculatorApp::Common::BitLength m_currentValueBitLength;
};
}