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chore: add SizedFrame for window sizing#54

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Merged
deansheather merged 2 commits intomainfromdean/sign-in-revamp
Mar 14, 2025
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68 changes: 68 additions & 0 deletionsApp/Controls/SizedFrame.cs
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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,68 @@
using System;
using Windows.Foundation;
using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;

namespace Coder.Desktop.App.Controls;

public class SizedFrameEventArgs : EventArgs
{
public Size NewSize { get; init; }
}

/// <summary>
/// SizedFrame extends Frame by adding a SizeChanged event, which will be triggered when:
/// - The contained Page's content's size changes
/// - We switch to a different page.
///
/// Sadly this is necessary because Window.Content.SizeChanged doesn't trigger when the Page's content changes.
/// </summary>
public class SizedFrame : Frame
{
public delegate void SizeChangeDelegate(object sender, SizedFrameEventArgs e);

public new event SizeChangeDelegate? SizeChanged;

private Size _lastSize;

public void SetPage(Page page)
{
if (ReferenceEquals(page, Content)) return;

// Set the new event listener.
if (page.Content is not FrameworkElement newElement)
throw new Exception("Failed to get Page.Content as FrameworkElement on SizedFrame navigation");
newElement.SizeChanged += Content_SizeChanged;

// Unset the previous event listener.
if (Content is Page { Content: FrameworkElement oldElement })
oldElement.SizeChanged -= Content_SizeChanged;

// We don't use RootFrame.Navigate here because it doesn't let you
// instantiate the page yourself. We also don't need forwards/backwards
// capabilities.
Content = page;

// Fire an event.
Content_SizeChanged(newElement, null);
}

public Size GetContentSize()
{
if (Content is not Page { Content: FrameworkElement frameworkElement })
throw new Exception("Failed to get Content as FrameworkElement for SizedFrame");

frameworkElement.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
return new Size(frameworkElement.ActualWidth, frameworkElement.ActualHeight);
}

private void Content_SizeChanged(object sender, SizeChangedEventArgs? _)
{
var size = GetContentSize();
if (size == _lastSize) return;
_lastSize = size;

var args = new SizedFrameEventArgs { NewSize = size };
SizeChanged?.Invoke(this, args);
}
}
3 changes: 2 additions & 1 deletionApp/Views/SignInWindow.xaml
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Original file line numberDiff line numberDiff line change
Expand Up@@ -4,6 +4,7 @@
x:Class="Coder.Desktop.App.Views.SignInWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:controls="using:Coder.Desktop.App.Controls"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Expand All@@ -13,5 +14,5 @@
<DesktopAcrylicBackdrop />
</Window.SystemBackdrop>

<Frame x:Name="RootFrame" />
<controls:SizedFrame x:Name="RootFrame" />
</Window>
39 changes: 31 additions & 8 deletionsApp/Views/SignInWindow.xaml.cs
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Original file line numberDiff line numberDiff line change
@@ -1,49 +1,72 @@
using System;
using Windows.Graphics;
using Coder.Desktop.App.Controls;
using Coder.Desktop.App.ViewModels;
using Coder.Desktop.App.Views.Pages;
using Microsoft.UI.Windowing;
using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Media;

namespace Coder.Desktop.App.Views;

/// <summary>
/// The dialog window to allow the user to signinto their Coder server.
/// The dialog window to allow the user to signin to their Coder server.
/// </summary>
public sealed partial class SignInWindow : Window
{
private const double WIDTH = 600.0;
private const double HEIGHT = 300.0;
private const double WIDTH = 500.0;

private readonly SignInUrlPage _signInUrlPage;
private readonly SignInTokenPage _signInTokenPage;

public SignInWindow(SignInViewModel viewModel)
{
InitializeComponent();
SystemBackdrop = new DesktopAcrylicBackdrop();
RootFrame.SizeChanged += RootFrame_SizeChanged;

_signInUrlPage = new SignInUrlPage(this, viewModel);
_signInTokenPage = new SignInTokenPage(this, viewModel);

// Prevent the window from being resized.
if (AppWindow.Presenter is not OverlappedPresenter presenter)
throw new Exception("Failed to get OverlappedPresenter for window");
presenter.IsMaximizable = false;
presenter.IsResizable = false;

NavigateToUrlPage();
ResizeWindow();
MoveWindowToCenterOfDisplay();
}

public void NavigateToTokenPage()
{
RootFrame.Content =_signInTokenPage;
RootFrame.SetPage(_signInTokenPage);
}

public void NavigateToUrlPage()
{
RootFrame.Content = _signInUrlPage;
RootFrame.SetPage(_signInUrlPage);
}

private void RootFrame_SizeChanged(object sender, SizedFrameEventArgs e)
{
ResizeWindow(e.NewSize.Height);
}

private void ResizeWindow()
{
ResizeWindow(RootFrame.GetContentSize().Height);
}

private void ResizeWindow(double height)
{
if (height <= 0) height = 100; // will be resolved next frame typically

var scale = DisplayScale.WindowScale(this);
varheight = (int)(HEIGHT * scale);
varwidth = (int)(WIDTH * scale);
AppWindow.Resize(new SizeInt32(width, height));
varnewWidth = (int)(WIDTH * scale);
varnewHeight = (int)(height * scale);
AppWindow.ResizeClient(new SizeInt32(newWidth, newHeight));
}

private void MoveWindowToCenterOfDisplay()
Expand Down
2 changes: 1 addition & 1 deletionApp/Views/TrayWindow.xaml
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Original file line numberDiff line numberDiff line change
Expand Up@@ -19,6 +19,6 @@
<controls:TrayIcon x:Name="TrayIcon" />

<!-- This is where the current Page is displayed -->
<Frame x:Name="RootFrame" />
<controls:SizedFrame x:Name="RootFrame" />
</Grid>
</Window>
54 changes: 14 additions & 40 deletionsApp/Views/TrayWindow.xaml.cs
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Original file line numberDiff line numberDiff line change
@@ -1,9 +1,9 @@
using System;
using System.Runtime.InteropServices;
using Windows.Foundation;
using Windows.Graphics;
using Windows.System;
using Windows.UI.Core;
using Coder.Desktop.App.Controls;
using Coder.Desktop.App.Models;
using Coder.Desktop.App.Services;
using Coder.Desktop.App.Views.Pages;
Expand DownExpand Up@@ -48,6 +48,7 @@ public TrayWindow(IRpcController rpcController, ICredentialManager credentialMan
AppWindow.Hide();
SystemBackdrop = new DesktopAcrylicBackdrop();
Activated += Window_Activated;
RootFrame.SizeChanged += RootFrame_SizeChanged;

rpcController.StateChanged += RpcController_StateChanged;
credentialManager.CredentialsChanged += CredentialManager_CredentialsChanged;
Expand DownExpand Up@@ -120,55 +121,31 @@ public void SetRootFrame(Page page)
return;
}

if (ReferenceEquals(page, RootFrame.Content)) return;

if (page.Content is not FrameworkElement newElement)
throw new Exception("Failed to get Page.Content as FrameworkElement on RootFrame navigation");
newElement.SizeChanged += Content_SizeChanged;

// Unset the previous event listener.
if (RootFrame.Content is Page { Content: FrameworkElement oldElement })
oldElement.SizeChanged -= Content_SizeChanged;

// Swap them out and reconfigure the window.
// We don't use RootFrame.Navigate here because it doesn't let you
// instantiate the page yourself. We also don't need forwards/backwards
// capabilities.
RootFrame.Content = page;
ResizeWindow();
MoveWindow();
RootFrame.SetPage(page);
}

private voidContent_SizeChanged(object sender,SizeChangedEventArgs e)
private voidRootFrame_SizeChanged(object sender,SizedFrameEventArgs e)
{
ResizeWindow();
ResizeWindow(e.NewSize.Height);
MoveWindow();
}

private void ResizeWindow()
{
if (RootFrame.Content is not Page { Content: FrameworkElement frameworkElement })
throw new Exception("Failed to get Content as FrameworkElement for window");

// Measure the desired size of the content
frameworkElement.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));

// Adjust the AppWindow size
var scale = GetDisplayScale();
var height = (int)(frameworkElement.ActualHeight * scale);
var width = (int)(WIDTH * scale);
AppWindow.Resize(new SizeInt32(width, height));
ResizeWindow(RootFrame.GetContentSize().Height);
}

privatedouble GetDisplayScale()
privatevoid ResizeWindow(double height)
{
var hwnd = WindowNative.GetWindowHandle(this);
var dpi = NativeApi.GetDpiForWindow(hwnd);
if (dpi == 0) return 1; // assume scale of 1
return dpi / 96.0; // 96 DPI == 1
if (height <= 0) height = 100; // will be resolved next frame typically

var scale = DisplayScale.WindowScale(this);
var newWidth = (int)(WIDTH * scale);
var newHeight = (int)(height * scale);
AppWindow.Resize(new SizeInt32(newWidth, newHeight));
}

public void MoveResizeAndActivate()
private void MoveResizeAndActivate()
{
SaveCursorPos();
ResizeWindow();
Expand DownExpand Up@@ -268,9 +245,6 @@ public static class NativeApi
[DllImport("user32.dll")]
public static extern bool SetForegroundWindow(IntPtr hwnd);

[DllImport("user32.dll")]
public static extern int GetDpiForWindow(IntPtr hwnd);

public struct POINT
{
public int X;
Expand Down
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