Initial PR for the feature/GraphingCalculator feature branch, part of microsoft#338.

The feature incorporates a proprietary Microsoft-owned graphing engine to drive graphing experiences in the Windows Calculator app. Due to the private nature of the graphing engine, the source available in the public repo will make use of a mock graphing engine. See README.md for more details.

This PR simply serves as a base for future feature development. As such, the PR will be immediately merged. Feedback on the content of this PR, and on the feature in general, is encouraged. If there is feedback related to the content of this specific PR, please leave comments on the PR page. We will address the comments in future PRs to the feature branch.

Description of the changes:
Add Pan/Zoom support for the graph surface.
Currently only supports Mouse/Pen/Touch interactions. Keyboard support will be added separately.

How changes were validated:
Manual

* Updated Graphing Interfaces to version 2.0.1

* Merge master into feature/GraphingCalculator branch

* Plumebd with data transfer

* Getting mainpage to talk to getbitmap.  moving share callbacks from mainpage to graphingcalculator

* Trying to get bitmap from renderer.

* work

* Share worked

* cleanups

* Cleanups progressing

* Share working, need loc for title string and user notification incase of a failure.  Then add the equations key.

* More cleanup, now using share icon image and resources for strings.  Still need to do the graph equation key.

* Change share to html based start.

* Key working, with UL but going to try changing to table.

* Fix a html formating error, generating a new UL for each equation.

* Switched over to a table for equation key and have color block formating

* Updates from PR feedback, using Graphing::IBitmap abstraction.

* Update src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.h

Fixed

Co-Authored-By: Pepe Rivera <joseartrivera@gmail.com>

* PR Updates.

* Add variables to the graph key.

* PR Updates.

* Use RichEdit Math Mode

* Add comment

Co-Authored-By: Stephanie Anderl <46726333+sanderl@users.noreply.github.com>

* Plumebd with data transfer

* Getting mainpage to talk to getbitmap.  moving share callbacks from mainpage to graphingcalculator

* Trying to get bitmap from renderer.

* work

* Share worked

* cleanups

* Cleanups progressing

* Share working, need loc for title string and user notification incase of a failure.  Then add the equations key.

* More cleanup, now using share icon image and resources for strings.  Still need to do the graph equation key.

* Change share to html based start.

* Key working, with UL but going to try changing to table.

* Fix a html formating error, generating a new UL for each equation.

* Switched over to a table for equation key and have color block formating

* Updates from PR feedback, using Graphing::IBitmap abstraction.

* Update src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.h

Fixed

Co-Authored-By: Pepe Rivera <joseartrivera@gmail.com>

* PR Updates.

* Add variables to the graph key.

* eod

* Passive graph value tracing working.

* Basic active tracing cursor working.

* Move active tracing from graphingcalculator to grapher to save some hops.
Also block tracking of the active tracing key's when in the EquationTextBox.

* Active tracing working, need to put button on screen for activation.

* Added active tracing control button (placeholder image)

* Eod

* Popup trace value now tracks the highlighted point.

* Popup skined

* PR Updates.

* Update certificate thumbnail so VS2019 doesn't have a build error.

* PR comments in process.

* PR Updates

* PR Updates, change tracing value to use tooltip static resource so we automatically change depending on system values.  And changed text formatting of the value to be generic (x,y) value.

* PR updates, changed how we detect who has focus so we don't eat keys when not in active tracing.

* Additional filtering for the Key Up/Down in the grapher.

* Plumebd with data transfer

* Getting mainpage to talk to getbitmap.  moving share callbacks from mainpage to graphingcalculator

* Trying to get bitmap from renderer.

* work

* Share worked

* cleanups

* Cleanups progressing

* Share working, need loc for title string and user notification incase of a failure.  Then add the equations key.

* More cleanup, now using share icon image and resources for strings.  Still need to do the graph equation key.

* Change share to html based start.

* Key working, with UL but going to try changing to table.

* Fix a html formating error, generating a new UL for each equation.

* Switched over to a table for equation key and have color block formating

* Updates from PR feedback, using Graphing::IBitmap abstraction.

* Update src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.h

Fixed

Co-Authored-By: Pepe Rivera <joseartrivera@gmail.com>

* PR Updates.

* Add variables to the graph key.

* eod

* Passive graph value tracing working.

* Basic active tracing cursor working.

* Move active tracing from graphingcalculator to grapher to save some hops.
Also block tracking of the active tracing key's when in the EquationTextBox.

* Active tracing working, need to put button on screen for activation.

* Added active tracing control button (placeholder image)

* Eod

* Popup trace value now tracks the highlighted point.

* Popup skined

* PR Updates.

* Update certificate thumbnail so VS2019 doesn't have a build error.

* PR comments in process.

* PR Updates

* PR Updates, change tracing value to use tooltip static resource so we automatically change depending on system values.  And changed text formatting of the value to be generic (x,y) value.

* PR updates, changed how we detect who has focus so we don't eat keys when not in active tracing.

* Additional filtering for the Key Up/Down in the grapher.

* Fix bug where active tracing would turn back on after clicking button to turn it off.

* Added IGraphAnalyzer

* Key Graph Features called and getting returned to the client. To do put all strings into the Equation object

* Updated UpdateKeyGraphFeatures to add function analysis data to all properties in Equation object

* Update KGF when variables are updated

* Key graph features ui started

* Added MathRichEditBox and started hooking up key graph features to the UI

* Updated EquationViewModel to include parity and periodicity

* Updated key graph features to update the EquationViewModel

* updated key graph features to display more values

* Key graph features populating uing MathRichEdit mode

* moved KeyGraphFeatures control to GraphingCalculator.xaml

* Use MathML formatting instead of MathRichEdit for strings passed back from the engine

* cleaned up project targeting and equation.h comments

* Updated equation edit box to populate for KeyGraphFeatures

* Fixed vcxproj files to have the correct targeting and certificates. KGF Title strings moved to x:Uid instead of the code behind

* Updated per PR feedback

* Update MathRichEditBox to detect if the string is a mathml string and use the appropriate set method to set the text

* fixed the issue where parity, periodicity and monotonicity could be set with an old value if the next one is empty

* KGF control UI adjustments and error handling

* Error control updates

* Error handling added when analysis fails

* fixed alignment on rich edit boxes

* Add monotonicity direction into the mathml string and only have 1 richeditbox

* Set hover state on KGF EquationEditBox to change button opacity and fixed spacing in Monotonicity RichEditBox

* remove sideload package certificate info VS added

* updated logic for setting error strings to be in the viewmodel

* Updated KeyGraphFeatures to populate dynamically using a ListView and TemplateSelector

* Update periodicity to not show if it isn't supported

* Fixed issue where y-intercept was using the x-intercept value

* Remove ItemsControl ItemsContainerStyle

* Updated per pr feedback. Fixed bug where analysis error would not reset

* Update MathRichEdit box to remove selection when focus is lost

* Updated mathrichedit to get LAF access for Dev, Release and Graphing projects

* Remove OnLostFocus in MathRichEdit, Change KGF ItemsControl back to ListView

* Clean up styles for KGF and ensure the match the comps

* Moved formatoptions logic to the Grapher constructor and reverted LineColor.Text resource that was mistakenly taken out

* Add copyright header to KGF Files

* fixed issue where asymptote values were not populating

* Disable KGF button when there is no equation. Fixed issue where equation populated in a new equationtextbox after the previous one was deleted

* Removed formatoptions testing lines used for debugging

* fix share bugs

* PR feedback

* PR feedback and merge fix

* Fix spacing and use explicit break

* Fix extra space

* Fix listview

* extra merge with KGF

* Few tweaks

* Fix scrolling

* PR feedback and other tweaks

* Update src/Calculator/Views/GraphingCalculator/EquationInputArea.xaml

Co-Authored-By: Stephanie Anderl <46726333+sanderl@users.noreply.github.com>

…res (microsoft#791)

* refactor code

* update KGF

* Rename some functions

* Undo comment out of proj file

* Pr feedback

…f2, f3..., visibility icon on hover (microsoft#804)

* Added enable/disable line functionality

* Update EquationTextBox to change the opacity of functions have are not visible. Update the function label for the EquationTextBox to increment the label to show f1, f2, f3, etc

* rebase key-graph-features and fix issue where removing an equation box and adding a new one repopulates the previous equation

* Added visibility icon for the equation button hover

* updated EquationButton to be a toggle button to better handle the LineHidden state and other PR comment fixes.

* Updated EquationButton style to use a toggle button and to have placeholder icons for the show/hide states

* Updated equation button after pulling the refactor work into the branch. Fixed the Equation Button in KGF UI

* Fixed Pepe's bugs

* Uncomment temporary.pfx in calculator.vcxproj

…#803)

* Add support of small windows

* remove extra space

* Modify how we manage the tooltip

* Fix merge issues

* Add tooltips to buttons in graphing calculator

* Fix break due to bad merge

* CR Feedback

…soft#823)

…ft#839)

…raphingCalculator

…Dev (microsoft#843)

* add error handling

* Handle regraphing on certain errors

* Fix high contrast

* Hide KGF button in error state

…oint position (microsoft#844)

* Add icons for show, hide and switch to equation mode

* use correct icon for small mode

* cleanup of fonts

* Add missing automation names for buttons in graphing calculator

* Add narrator support for tracing features

* Update ManualTests.md

Added manual test cases for Graphing mode in Calculator.

* Update ManualTests.md

Added line breaks to make my additions more legible, and added two more cases for testing the "too complex" and "unsupported" error messages for Key Graph Features.

…ft#848)

…t#854)

* Add context menu to rich edit to allow for keyboard support

* Update src/Calculator/Controls/EquationTextBox.cpp

Co-Authored-By: Pepe Rivera <joseartrivera@gmail.com>

* Check for focus before triggering submit

* fix inequality rendering

* Add comment

* init

* Replace the Add equation button by an EquationTextBox

* Move automatically the focus to the next textbox when users press Enter

* nit

* localize the placeholder

* rebase

* rebased and disable remove context menu when the equation is the last one

* replace storyboards by setters in visual states

…t#852)

* renamed MockGraphingImpl to GraphingImpl, updated the nuget.config to include the WindowsApps feed

* Revert nuget.config change

* Updated vcxproj files to output to the same directory regardless of configuration

* Removed outder used GenerateProjectSpecificOutputfolder instead

* revert commenting out the temporary.pfx cert in the calculator.vcxproj file

…on (microsoft#864)

* redesign graph buttons

* fix high-contrast and focus

* Address issues with error states

* Add various fixes

* Add back initial tooltip

* PR comments

* move variable editor

* support high contrast and tab navigation

* Remove obsolete resources

* take feedback into account

* Fix focus when virtualization recycle a EquationTextBox

* formatting

* GraphControl cleaning

* replace textbox value after submission

* rebase

* rebase

* rebase

* Add filters

* rebase!

* rebase

…crosoft#866)

* Save and restore the value of EquationInputArea when users scroll

* clean up

* replace ->Focus(..) by FocusManager::TryFocus(...)

* update graph tooltip

* modify font size

* remove EquationBox from KFG

* polish

* improve templates

* fix issue with dark theme and MathRichEditBox

* Wire up graphing calculator keyboard with math rich edit control

* CR feedback

* Handle focus bug in flyout

* Equation Control - High contrast

* tweak

* Update graph colors when users switch from one high contrast mode to another

* decrease opacity of reveal borders

* Make some tweaks to share output

* adjust strings

* one more tweak

* Remove unneeded span

)

* Change active tracing to use correct glyph instead of dot

* make the pointer on the glyph line up correctly

* prevent the graph to change ranges when hide/show an equation or change the trig unit

* make sure to not zoom/pan when we hide the last visible equation

…to mergeFeature

… is hidden