Add new Sample Scenario - InkStroke - Resize and Move selected InkStroke #1189
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…oke that has been selected using lasso tool
added comments, removed redundant code, changed order of methods. etc.
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ChrisGuzak
reviewed
Jun 19, 2020
| Windows::Foundation::EventRegistrationToken pointerExitedRectangleToken; | ||
| Windows::Foundation::EventRegistrationToken pointerMovedRectangleToken; | ||
| Windows::Foundation::EventRegistrationToken pointerPressedRectangleToken; | ||
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ChrisGuzak
reviewed
Jun 19, 2020
| Scenario13::Scenario13() | ||
| { | ||
| InitializeComponent(); | ||
| LassoSelect = (Symbol)0xEF20; |
| if (currentManipulationType != ManipulationTypes::None) | ||
| return; | ||
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| Windows::UI::Core::CoreWindow^ window = Windows::UI::Core::CoreWindow::GetForCurrentThread(); |
| /// <param name="e"></param> | ||
| void Scenario13::SelectionRectangle_ManipulationDelta(Object^ sender, Windows::UI::Xaml::Input::ManipulationDeltaRoutedEventArgs^ e) | ||
| { | ||
| CompositeTransform^ transform = (CompositeTransform^)selectionRectangle->RenderTransform; |
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auto transform = ..., use safe_cast
| break; | ||
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| case ManipulationTypes::Size: | ||
| //Example Scaling factor used to determine the speed at which the box will grow/shrink. |
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space after //, here and below
| //Example Scaling factor used to determine the speed at which the box will grow/shrink. | ||
| auto scale = std::abs(1 + (float)e->Delta.Translation.X / 100); | ||
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| //Restrict scaling to a Minimum value. this well prevent negative With amounts and app crashing. |
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comment needs editing, This will prevent...
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| auto allStrokes = inkCanvas->InkPresenter->StrokeContainer->GetStrokes(); | ||
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| if (allStrokes == nullptr) |
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winrt containers should never be null, so this test is unnecessary, instead empty (Size() == 0). Is there an API bug where it returns null?
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| float3x2 matrixSacale = make_float3x2_scale(scale, topLeft); | ||
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| for (auto stroke : allStrokes) |
| { | ||
| float3x2 matrix = make_float3x2_translation((float)position.X, (float)position.Y); | ||
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| auto allStrokes = inkCanvas->InkPresenter->StrokeContainer->GetStrokes(); |
| if (allStrokes == nullptr) | ||
| return; | ||
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| for (auto stroke : allStrokes) |
| void Scenario13::ClearSelection() | ||
| { | ||
| auto strokes = inkCanvas->InkPresenter->StrokeContainer->GetStrokes(); | ||
| for (auto stroke : strokes) |
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We recently came across a question in the forums regarding an issue with someone selecting an inkstroke then trying to move and resize it. After digging through the samples I noticed that we didn't provide any guidance on how this could be done.
The team and I thought it would be a good idea to provide this sample, so I wrote an additional scenario that shows an approach that could be taken to accomplish this.
Essentially what happens is you highlight and select the Inkstoke. This creates a "selection" box around the item which you can mouse over. When you mouse over your mouse pointer changes to indicate the action that can be preformed, Either move or resize. Then you click and hold the mouse to preform your action.