т
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ARCHI86
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5dbd13040f
commit
c3fc868156
2 changed files with 61 additions and 55 deletions
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@ -10,7 +10,7 @@
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<!-- Главная страница приложения -->
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<FlyoutItem Title="Главная" Icon="add.png">
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<ShellContent ContentTemplate="{DataTemplate local:GraphPage}" />
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<ShellContent ContentTemplate="{DataTemplate local:ResizableCanvasPage}" />
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</FlyoutItem>
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<!-- Выпадающий список категорий -->
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@ -1,6 +1,5 @@
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using Microsoft.Maui.Controls;
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using Microsoft.Maui.Graphics;
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using Microsoft.Maui.Layouts;
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using System;
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namespace NotesDataAnalyst
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@ -10,7 +9,6 @@ namespace NotesDataAnalyst
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private const double InitialWidth = 150;
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private const double InitialHeight = 100;
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private double startX, startY;
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private bool isResizing;
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public ResizableCanvasPage()
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{
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@ -27,103 +25,111 @@ namespace NotesDataAnalyst
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CornerRadius = 8,
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WidthRequest = InitialWidth,
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HeightRequest = InitialHeight,
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Padding = 0,
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HasShadow = true
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Padding = 0, // Óáèðàåì âíóòðåííèå îòñòóïû
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Content = new Grid() // Èñïîëüçóåì Grid äëÿ äîáàâëåíèÿ ñîäåðæèìîãî è ðó÷êè
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};
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var content = new Label
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// Ñîçäàåì ñîäåðæèìîå âíóòðè ôðåéìà
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var content = new StackLayout
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{
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Text = "Resizable Object",
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HorizontalOptions = LayoutOptions.Center,
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VerticalOptions = LayoutOptions.Center
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BackgroundColor = Colors.LightBlue,
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Children =
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{
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new Label { Text = "Resizable Object", HorizontalOptions = LayoutOptions.Center, VerticalOptions = LayoutOptions.Center }
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}
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};
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resizableFrame.Content = content;
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// Ñîçäàåì ðó÷êó äëÿ èçìåíåíèÿ ðàçìåðà
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var resizeHandle = new BoxView
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{
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BackgroundColor = Colors.Gray,
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WidthRequest = 20,
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HeightRequest = 20,
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HorizontalOptions = LayoutOptions.End,
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VerticalOptions = LayoutOptions.End
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HeightRequest = 20
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};
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// Ñîçäàåì ñëîé AbsoluteLayout äëÿ ðó÷êè è ôðåéìà
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var layout = new AbsoluteLayout();
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AbsoluteLayout.SetLayoutBounds(resizableFrame, new Rect(0, 0, InitialWidth, InitialHeight));
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layout.Children.Add(resizableFrame);
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// Ñîçäàåì Grid âíóòðè Frame
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var grid = (Grid)resizableFrame.Content;
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// Ïîçèöèîíèðóåì ðó÷êó
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AbsoluteLayout.SetLayoutFlags(resizeHandle, AbsoluteLayoutFlags.PositionProportional);
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AbsoluteLayout.SetLayoutBounds(resizeHandle, new Rect(1, 1, 20, 20));
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layout.Children.Add(resizeHandle);
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// Íàñòðîèì ñåòêó: äîáàâèì äâà ñòîëáöà è äâå ñòðîêè
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grid.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Star });
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grid.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto }); // äëÿ ðó÷êè
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grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Star });
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grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto }); // äëÿ ðó÷êè
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// Äîáàâëÿåì îáðàáîò÷èê ïåðåìåùåíèÿ
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// Äîáàâëÿåì ñîäåðæèìîå â ïåðâóþ ÿ÷åéêó (ñòîëáåö 0, ñòðîêà 0)
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grid.Children.Add(content); // Áåç óêàçàíèÿ êîëîíîê/ñòðîê
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// Äîáàâëÿåì ðó÷êó â ïðàâûé íèæíèé óãîë (ñòîëáåö 1, ñòðîêà 1)
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grid.Children.Add(resizeHandle); // Áåç óêàçàíèÿ êîëîíîê/ñòðîê
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// Óñòàíàâëèâàåì ñòðîêó è êîëîíêó äëÿ ðó÷êè
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Grid.SetRow(resizeHandle, 1);
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Grid.SetColumn(resizeHandle, 1);
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// Äîáàâëÿåì ïàíîðàìó äëÿ ïåðåìåùåíèÿ îáúåêòà
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var panGesture = new PanGestureRecognizer();
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panGesture.PanUpdated += (s, e) => OnDragPanUpdated(s, e, layout);
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panGesture.PanUpdated += (s, e) => OnDragPanUpdated(s, e, resizableFrame);
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resizableFrame.GestureRecognizers.Add(panGesture);
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// Äîáàâëÿåì îáðàáîò÷èê äëÿ èçìåíåíèÿ ðàçìåðà
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// Äîáàâëÿåì ïàíîðàìó äëÿ èçìåíåíèÿ ðàçìåðà
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var resizePanGesture = new PanGestureRecognizer();
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resizePanGesture.PanUpdated += (s, e) => OnResizePanUpdated(s, e, layout);
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resizePanGesture.PanUpdated += (s, e) => OnResizePanUpdated(s, e, resizableFrame, resizeHandle);
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resizeHandle.GestureRecognizers.Add(resizePanGesture);
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// Óñòàíàâëèâàåì íà÷àëüíóþ ïîçèöèþ
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AbsoluteLayout.SetLayoutBounds(layout, new Rect(x, y, InitialWidth, InitialHeight));
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CanvasLayout.Children.Add(layout);
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// Óñòàíàâëèâàåì ïîçèöèþ ôðåéìà
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AbsoluteLayout.SetLayoutBounds(resizableFrame, new Rect(x, y, InitialWidth, InitialHeight));
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CanvasLayout.Children.Add(resizableFrame);
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// Îáíîâëÿåì ïîçèöèþ ðó÷êè
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UpdateResizeHandlePosition(resizableFrame, resizeHandle);
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}
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// Ëîãèêà ïåðåìåùåíèÿ
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private void OnDragPanUpdated(object sender, PanUpdatedEventArgs e, AbsoluteLayout layout)
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private void OnDragPanUpdated(object sender, PanUpdatedEventArgs e, Frame frame)
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{
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if (isResizing) return;
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if (e.StatusType == GestureStatus.Started)
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{
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startX = AbsoluteLayout.GetLayoutBounds(layout).X;
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startY = AbsoluteLayout.GetLayoutBounds(layout).Y;
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startX = AbsoluteLayout.GetLayoutBounds(frame).X;
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startY = AbsoluteLayout.GetLayoutBounds(frame).Y;
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}
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else if (e.StatusType == GestureStatus.Running)
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{
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double x = startX + e.TotalX;
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double y = startY + e.TotalY;
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AbsoluteLayout.SetLayoutBounds(frame, new Rect(x, y, frame.WidthRequest, frame.HeightRequest));
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// Îáíîâëåíèå UI ÷åðåç Dispatcher
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Dispatcher.Dispatch(() =>
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{
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AbsoluteLayout.SetLayoutBounds(layout, new Rect(x, y, layout.WidthRequest, layout.HeightRequest));
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});
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// Îáíîâëÿåì ïîçèöèþ ðó÷êè
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var resizeHandle = (BoxView)((Grid)frame.Content).Children[1];
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UpdateResizeHandlePosition(frame, resizeHandle);
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}
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}
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// Ëîãèêà èçìåíåíèÿ ðàçìåðà
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private void OnResizePanUpdated(object sender, PanUpdatedEventArgs e, AbsoluteLayout layout)
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private void OnResizePanUpdated(object sender, PanUpdatedEventArgs e, Frame frame, BoxView resizeHandle)
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{
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isResizing = true;
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if (e.StatusType == GestureStatus.Started)
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{
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startX = layout.WidthRequest;
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startY = layout.HeightRequest;
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startX = frame.WidthRequest;
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startY = frame.HeightRequest;
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}
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else if (e.StatusType == GestureStatus.Running)
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{
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double newWidth = Math.Max(50, startX + e.TotalX);
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double newHeight = Math.Max(50, startY + e.TotalY);
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frame.WidthRequest = newWidth;
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frame.HeightRequest = newHeight;
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Dispatcher.Dispatch(() =>
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{
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layout.WidthRequest = newWidth;
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layout.HeightRequest = newHeight;
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});
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}
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else if (e.StatusType == GestureStatus.Completed || e.StatusType == GestureStatus.Canceled)
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{
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isResizing = false;
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// Îáíîâëÿåì ïîçèöèþ ðó÷êè ïîñëå èçìåíåíèÿ ðàçìåðîâ
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UpdateResizeHandlePosition(frame, resizeHandle);
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}
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}
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private void UpdateResizeHandlePosition(Frame frame, BoxView resizeHandle)
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{
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var frameBounds = AbsoluteLayout.GetLayoutBounds(frame);
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double x = frameBounds.X + frame.WidthRequest - resizeHandle.WidthRequest;
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double y = frameBounds.Y + frame.HeightRequest - resizeHandle.HeightRequest;
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AbsoluteLayout.SetLayoutBounds(resizeHandle, new Rect(x, y, resizeHandle.WidthRequest, resizeHandle.HeightRequest));
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}
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protected override void OnAppearing()
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{
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base.OnAppearing();
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