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为遮罩层实现双缓冲机制并将bitmap大小固定为512*384

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zqm
2025-10-30 08:52:53 +08:00
parent 8ea1829cf2
commit f9404dd259
1 changed files with 58 additions and 28 deletions
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86
Windows/CS/Framework4.0/Toprie/Toprie/Camera.cs
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@@ -108,41 +108,53 @@ namespace JoyD.Windows.CS.Toprie
{
try
{
Console.WriteLine($"UpdateMaskDisplay called, _isImageUpdatePaused: {_isImageUpdatePaused}, maskImageBox: {maskImageBox}, maskImageBox.Size: {maskImageBox.Width}x{maskImageBox.Height}");
Console.WriteLine($"UpdateMaskDisplay called, _isImageUpdatePaused: {_isImageUpdatePaused}");
if (_isImageUpdatePaused)
{
// 确保maskImageBox大小有效
int width = Math.Max(100, maskImageBox.Width);
int height = Math.Max(100, maskImageBox.Height);
// 使用固定大小512*384，与图像层的src图像大小一致
const int bitmapWidth = 512;
const int bitmapHeight = 384;
Console.WriteLine($"Creating bitmap with size: {width}x{height}");
Console.WriteLine($"Creating bitmap with fixed size: {bitmapWidth}x{bitmapHeight} using double buffering");
// 创建一个位图
Bitmap bitmap = new Bitmap(width, height);
// 创建一个支持双缓冲的位图
Bitmap bitmap = new Bitmap(bitmapWidth, bitmapHeight);
// 使用双缓冲技术绘制
using (Graphics g = Graphics.FromImage(bitmap))
{
// 设置高质量绘制
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
// 设置半透明背景
using (Brush brush = new SolidBrush(Color.FromArgb(150, Color.Black)))
// 创建缓冲区Graphics对象以实现双缓冲
BufferedGraphicsContext bufferedGraphicsContext = BufferedGraphicsManager.Current;
using (BufferedGraphics bufferedGraphics = bufferedGraphicsContext.Allocate(g, new Rectangle(0, 0, bitmapWidth, bitmapHeight)))
{
g.FillRectangle(brush, 0, 0, bitmap.Width, bitmap.Height);
Graphics bufferGraphics = bufferedGraphics.Graphics;
// 设置高质量绘制
bufferGraphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
bufferGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
// 设置半透明背景
using (Brush brush = new SolidBrush(Color.FromArgb(150, Color.Black)))
{
bufferGraphics.FillRectangle(brush, 0, 0, bitmapWidth, bitmapHeight);
}
// 设置文本样式
Font font = new Font("微软雅黑", 48, FontStyle.Bold);
Brush textBrush = new SolidBrush(Color.White);
StringFormat format = new StringFormat();
format.Alignment = StringAlignment.Center;
format.LineAlignment = StringAlignment.Center;
// 绘制"暂停"文字
Console.WriteLine("Drawing '暂停' text");
bufferGraphics.DrawString("暂停", font, textBrush,
new Rectangle(0, 0, bitmapWidth, bitmapHeight), format);
// 将缓冲区内容绘制到目标位图
bufferedGraphics.Render(g);
}
// 设置文本样式
Font font = new Font("微软雅黑", 48, FontStyle.Bold);
Brush textBrush = new SolidBrush(Color.White);
StringFormat format = new StringFormat();
format.Alignment = StringAlignment.Center;
format.LineAlignment = StringAlignment.Center;
// 绘制"暂停"文字
Console.WriteLine("Drawing '暂停' text");
g.DrawString("暂停", font, textBrush,
new Rectangle(0, 0, bitmap.Width, bitmap.Height), format);
}
// 在UI线程上更新maskImageBox
@@ -151,6 +163,11 @@ namespace JoyD.Windows.CS.Toprie
{
maskImageBox.Invoke(new Action(() =>
{
// 先释放之前的图像资源
if (maskImageBox.Image != null)
{
maskImageBox.Image.Dispose();
}
maskImageBox.Image = bitmap;
maskImageBox.Visible = true;
Console.WriteLine("maskImageBox updated via Invoke");
@@ -158,6 +175,11 @@ namespace JoyD.Windows.CS.Toprie
}
else
{
// 先释放之前的图像资源
if (maskImageBox.Image != null)
{
maskImageBox.Image.Dispose();
}
maskImageBox.Image = bitmap;
maskImageBox.Visible = true;
Console.WriteLine("maskImageBox updated directly");
@@ -171,13 +193,21 @@ namespace JoyD.Windows.CS.Toprie
{
maskImageBox.Invoke(new Action(() =>
{
maskImageBox.Image = null;
if (maskImageBox.Image != null)
{
maskImageBox.Image.Dispose();
maskImageBox.Image = null;
}
Console.WriteLine("maskImageBox cleared via Invoke");
}));
}
else
{
maskImageBox.Image = null;
if (maskImageBox.Image != null)
{
maskImageBox.Image.Dispose();
maskImageBox.Image = null;
}
Console.WriteLine("maskImageBox cleared directly");
}
}