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Add thread-safety with locks to window manager and rendering code

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Stone_Red
2026-06-08 20:18:52 +02:00
parent fd1db1b904
commit 82efb8d967
4 changed files with 222 additions and 156 deletions
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UI/GUI/Rendering/CanvasRenderSource.cs
+107 -100
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@@ -17,130 +17,137 @@ public sealed class CanvasRenderSource : IRenderSource
private static Point lastPointerPosition = new Point(-1, -1);
private static List<int> orderedWindowsCache = new();
private static bool isZOrderDirty = true;
private static readonly object renderLock = new object();
public void Render(IEnumerable<RenderCommand> commands)
{
bool changed = false;
foreach (RenderCommand command in commands)
lock (renderLock)
{
changed = true;
if (command.ElementType == "WindowClose")
bool changed = false;
foreach (RenderCommand command in commands)
{
windowCanvases.Remove(command.WindowId);
windowPositions.Remove(command.WindowId);
windowZIndices.Remove(command.WindowId);
isZOrderDirty = true;
continue;
}
if (command.ElementType == "Window" || command.ElementType == "WindowMove")
{
if (command.Properties.TryGetValue("ZIndex", out object? rawZIndex) && rawZIndex is int z)
changed = true;
if (command.ElementType == "WindowClose")
{
windowZIndices[command.WindowId] = z;
windowCanvases.Remove(command.WindowId);
windowPositions.Remove(command.WindowId);
windowZIndices.Remove(command.WindowId);
isZOrderDirty = true;
continue;
}
}
if (command.ElementType == "Window")
{
Size size = command.Properties.TryGetValue("Size", out object? rawSize) && rawSize is Size windowSize
? windowSize
: new Size(160, 120);
if (!windowCanvases.TryGetValue(command.WindowId, out Canvas? currentCanvas) ||
currentCanvas.Mode.Width != size.Width ||
currentCanvas.Mode.Height != size.Height)
if (command.ElementType == "Window" || command.ElementType == "WindowMove")
{
windowCanvases[command.WindowId] = new Canvas(size.Width, size.Height);
if (command.Properties.TryGetValue("ZIndex", out object? rawZIndex) && rawZIndex is int z)
{
windowZIndices[command.WindowId] = z;
isZOrderDirty = true;
}
}
if (command.ElementType == "Window")
{
Size size = command.Properties.TryGetValue("Size", out object? rawSize) && rawSize is Size windowSize
? windowSize
: new Size(160, 120);
if (!windowCanvases.TryGetValue(command.WindowId, out Canvas? currentCanvas) ||
currentCanvas.Mode.Width != size.Width ||
currentCanvas.Mode.Height != size.Height)
{
windowCanvases[command.WindowId] = new Canvas(size.Width, size.Height);
}
}
if (!windowCanvases.ContainsKey(command.WindowId))
{
windowCanvases[command.WindowId] = new Canvas(160, 120);
}
Canvas windowCanvas = windowCanvases[command.WindowId];
if (command.ElementType == "Window")
{
RenderWindow(windowCanvas, command);
windowPositions[command.WindowId] = command.Position;
continue;
}
if (command.ElementType == "WindowMove")
{
windowPositions[command.WindowId] = command.Position;
continue;
}
if (command.ElementType == "Circle")
{
RenderCircle(windowCanvas, command);
}
if (command.ElementType == "Rectangle")
{
RenderRectangle(windowCanvas, command);
}
if (command.ElementType == "Text")
{
RenderText(windowCanvas, command);
}
if (command.ElementType == "Line")
{
RenderLine(windowCanvas, command);
}
if (command.ElementType == "Button")
{
RenderButton(windowCanvas, command);
}
if (command.ElementType == "CheckBox")
{
RenderCheckBox(windowCanvas, command);
}
}
if (!windowCanvases.ContainsKey(command.WindowId))
if (changed)
{
windowCanvases[command.WindowId] = new Canvas(160, 120);
isDirty = true;
}
Canvas windowCanvas = windowCanvases[command.WindowId];
if (command.ElementType == "Window")
{
RenderWindow(windowCanvas, command);
windowPositions[command.WindowId] = command.Position;
continue;
}
if (command.ElementType == "WindowMove")
{
windowPositions[command.WindowId] = command.Position;
continue;
}
if (command.ElementType == "Circle")
{
RenderCircle(windowCanvas, command);
}
if (command.ElementType == "Rectangle")
{
RenderRectangle(windowCanvas, command);
}
if (command.ElementType == "Text")
{
RenderText(windowCanvas, command);
}
if (command.ElementType == "Line")
{
RenderLine(windowCanvas, command);
}
if (command.ElementType == "Button")
{
RenderButton(windowCanvas, command);
}
if (command.ElementType == "CheckBox")
{
RenderCheckBox(windowCanvas, command);
}
}
if (changed)
{
isDirty = true;
}
}
public static void CompositeAndDisplay(Canvas screenCanvas, Point pointerPosition)
{
if (!isDirty && pointerPosition == lastPointerPosition)
lock (renderLock)
{
return;
}
if (isZOrderDirty)
{
orderedWindowsCache = windowPositions.Keys.OrderBy(id => windowZIndices.TryGetValue(id, out int z) ? z : 0).ToList();
isZOrderDirty = false;
}
screenCanvas.Clear(Color.Black);
foreach (var windowId in orderedWindowsCache)
{
if (windowPositions.TryGetValue(windowId, out Point position) && windowCanvases.TryGetValue(windowId, out Canvas? windowCanvas))
if (!isDirty && pointerPosition == lastPointerPosition)
{
screenCanvas.DrawCanvas(windowCanvas, position.X, position.Y);
return;
}
if (isZOrderDirty)
{
orderedWindowsCache = windowPositions.Keys.OrderBy(id => windowZIndices.TryGetValue(id, out int z) ? z : 0).ToList();
isZOrderDirty = false;
}
screenCanvas.Clear(Color.Black);
foreach (var windowId in orderedWindowsCache)
{
if (windowPositions.TryGetValue(windowId, out Point position) && windowCanvases.TryGetValue(windowId, out Canvas? windowCanvas))
{
screenCanvas.DrawCanvas(windowCanvas, position.X, position.Y);
}
}
screenCanvas.DrawFilledCircle(Color.White, pointerPosition.X, pointerPosition.Y, 5);
screenCanvas.Display();
lastPointerPosition = pointerPosition;
isDirty = false;
}
screenCanvas.DrawFilledCircle(Color.White, pointerPosition.X, pointerPosition.Y, 5);
screenCanvas.Display();
lastPointerPosition = pointerPosition;
isDirty = false;
}
private static void RenderWindow(Canvas canvas, RenderCommand command)