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Add Graph Settings (#879)

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Rudy Huyn 2020-01-03 15:06:14 -08:00 • committed by GitHub
parent 234ac8deb3
commit 8357f5d5c5
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35 changed files with 1882 additions and 195 deletions
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src/CalcViewModel/GraphingCalculator/GraphingSettingsViewModel.cpp Normal file
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
#include "pch.h"
#include "GraphingSettingsViewModel.h"
#include <CalcManager\NumberFormattingUtils.h>
using namespace CalculatorApp::ViewModel;
using namespace CalcManager::NumberFormattingUtils;
using namespace GraphControl;
using namespace std;
using namespace Platform;
GraphingSettingsViewModel::GraphingSettingsViewModel()
: m_XMinValue(0)
, m_XMaxValue(0)
, m_YMinValue(0)
, m_YMaxValue(0)
, m_XMinError(false)
, m_XMaxError(false)
, m_YMinError(false)
, m_YMaxError(false)
, m_dontUpdateDisplayRange(false)
, m_XIsMinLastChanged(true)
, m_YIsMinLastChanged(true)
{
}
void GraphingSettingsViewModel::SetGrapher(Grapher ^ grapher)
{
if (grapher != nullptr)
{
if (grapher->TrigUnitMode == (int)Graphing::EvalTrigUnitMode::Invalid)
{
grapher->TrigUnitMode = (int)Graphing::EvalTrigUnitMode::Radians;
}
}
Graph = grapher;
InitRanges();
RaisePropertyChanged(L"TrigUnit");
}
void GraphingSettingsViewModel::InitRanges()
{
double xMin = 0, xMax = 0, yMin = 0, yMax = 0;
if (m_Graph != nullptr)
{
m_Graph->GetDisplayRanges(&xMin, &xMax, &yMin, &yMax);
}
m_dontUpdateDisplayRange = true;
m_XMinValue = xMin;
m_XMaxValue = xMax;
m_YMinValue = yMin;
m_YMaxValue = yMax;
auto valueStr = to_wstring(m_XMinValue);
TrimTrailingZeros(valueStr);
m_XMin = ref new String(valueStr.c_str());
valueStr = to_wstring(m_XMaxValue);
TrimTrailingZeros(valueStr);
m_XMax = ref new String(valueStr.c_str());
valueStr = to_wstring(m_YMinValue);
TrimTrailingZeros(valueStr);
m_YMin = ref new String(valueStr.c_str());
valueStr = to_wstring(m_YMaxValue);
TrimTrailingZeros(valueStr);
m_YMax = ref new String(valueStr.c_str());
m_dontUpdateDisplayRange = false;
}
void GraphingSettingsViewModel::RefreshPosition()
{
if (HasError())
{
InitRanges();
}
else
{
if (m_Graph != nullptr)
{
m_Graph->SetDisplayRanges(m_XMinValue, m_XMaxValue, m_YMinValue, m_YMaxValue);
}
}
}
void GraphingSettingsViewModel::UpdateDisplayRange(bool XValuesModified)
{
if (m_Graph == nullptr || m_dontUpdateDisplayRange || HasError())
{
return;
}
if (m_Graph->ForceProportionalAxes)
{
// If ForceProportionalAxes is set, the graph will try to automatically adjust ranges to remain proportional.
// but without a logic to choose which values can be modified or not.
// To solve this problem, we calculate the new ranges here, taking care to not modify the current axis and
// modifying only the least recently updated value of the other axis.
if (XValuesModified)
{
if (m_YIsMinLastChanged)
{
auto yMaxValue = m_YMinValue + (m_XMaxValue - m_XMinValue) * m_Graph->ActualHeight / m_Graph->ActualWidth;
if (m_YMaxValue != yMaxValue)
{
m_YMaxValue = yMaxValue;
auto valueStr = to_wstring(m_YMaxValue);
TrimTrailingZeros(valueStr);
m_YMax = ref new String(valueStr.c_str());
RaisePropertyChanged("YMax");
}
}
else
{
auto yMinValue = m_YMaxValue - (m_XMaxValue - m_XMinValue) * m_Graph->ActualHeight / m_Graph->ActualWidth;
if (m_YMinValue != yMinValue)
{
m_YMinValue = yMinValue;
auto valueStr = to_wstring(m_YMinValue);
TrimTrailingZeros(valueStr);
m_YMin = ref new String(valueStr.c_str());
RaisePropertyChanged("YMin");
}
}
}
else
{
if (m_XIsMinLastChanged)
{
auto xMaxValue = m_XMinValue + (m_YMaxValue - m_YMinValue) * m_Graph->ActualWidth / m_Graph->ActualHeight;
if (m_XMaxValue != xMaxValue)
{
m_XMaxValue = xMaxValue;
auto valueStr = to_wstring(m_XMaxValue);
TrimTrailingZeros(valueStr);
m_XMax = ref new String(valueStr.c_str());
RaisePropertyChanged("XMax");
}
}
else
{
auto xMinValue = m_XMaxValue - (m_YMaxValue - m_YMinValue) * m_Graph->ActualWidth / m_Graph->ActualHeight;
if (m_XMinValue != xMinValue)
{
m_XMinValue = xMinValue;
auto valueStr = to_wstring(m_XMinValue);
TrimTrailingZeros(valueStr);
m_XMin = ref new String(valueStr.c_str());
RaisePropertyChanged("XMin");
}
}
}
}
m_Graph->SetDisplayRanges(m_XMinValue, m_XMaxValue, m_YMinValue, m_YMaxValue);
}
bool GraphingSettingsViewModel::HasError()
{
return m_XMinError || m_YMinError || m_XMaxError || m_YMaxError || XError || YError;
}