实现当鼠标在半透明区域内单击时显示八个句柄的选中功能
This commit is contained in:
zqm
@@ -32,6 +32,8 @@ namespace JoyD.Windows.CS
|
||||
// 叠加层图像 - 用于存储已完成绘制的矩形
|
||||
private Image _rectangleOverlayImage = null;
|
||||
private int _hoveredRegionIndex = -1; // 当前悬停的区域索引（-1表示没有悬停在任何区域上）
|
||||
// 当前选中的区域索引
|
||||
private int _selectedRegionIndex = -1;
|
||||
|
||||
public Setting()
|
||||
{
|
||||
@@ -55,6 +57,9 @@ namespace JoyD.Windows.CS
|
||||
btnDrawRegion.Click += BtnDrawRegion_Click;
|
||||
btnSelectColor.Click += BtnSelectColor_Click;
|
||||
|
||||
// 注册鼠标事件
|
||||
picBoxTemp.MouseClick += PicBoxTemp_MouseClick;
|
||||
|
||||
// 初始隐藏颜色选择按钮，只有在绘制模式下才显示
|
||||
btnSelectColor.Visible = false;
|
||||
}
|
||||
@@ -381,6 +386,7 @@ namespace JoyD.Windows.CS
|
||||
/// 绘制事件 - 显示矩形框（实现图像合并机制）
|
||||
/// 处理叠加层图像的缩放，确保与控件尺寸匹配
|
||||
/// 实现鼠标悬停区域填充半透明色功能
|
||||
/// 实现选中区域显示八个句柄功能
|
||||
/// </summary>
|
||||
private void PicBoxTemp_Paint(object sender, PaintEventArgs e)
|
||||
{
|
||||
@@ -397,8 +403,31 @@ namespace JoyD.Windows.CS
|
||||
e.Graphics.DrawImage(_rectangleOverlayImage, destRect, 0, 0, _rectangleOverlayImage.Width, _rectangleOverlayImage.Height, GraphicsUnit.Pixel);
|
||||
}
|
||||
|
||||
// 绘制悬停区域的半透明填充（就绪状态）
|
||||
if (!_isDrawingMode && _hoveredRegionIndex != -1)
|
||||
// 绘制选中区域的半透明填充和八个句柄
|
||||
if (!_isDrawingMode && _selectedRegionIndex != -1)
|
||||
{
|
||||
// 查找当前选中的区域
|
||||
RegionInfo selectedRegion = _drawnRectangles.FirstOrDefault(r => r.Index == _selectedRegionIndex);
|
||||
if (selectedRegion != null)
|
||||
{
|
||||
// 将图像坐标转换为控件坐标
|
||||
Rectangle controlRectangle = ImageRectangleToControlRectangle(selectedRegion.ImageRectangle);
|
||||
|
||||
// 创建半透明的填充颜色（使用区域的颜色，但设置透明度）
|
||||
Color semiTransparentColor = Color.FromArgb(100, selectedRegion.Color);
|
||||
|
||||
// 填充半透明矩形
|
||||
using (SolidBrush brush = new SolidBrush(semiTransparentColor))
|
||||
{
|
||||
e.Graphics.FillRectangle(brush, controlRectangle);
|
||||
}
|
||||
|
||||
// 绘制八个句柄
|
||||
DrawHandles(e.Graphics, controlRectangle);
|
||||
}
|
||||
}
|
||||
// 绘制悬停区域的半透明填充（就绪状态且没有选中区域时）
|
||||
else if (!_isDrawingMode && _hoveredRegionIndex != -1 && _selectedRegionIndex == -1)
|
||||
{
|
||||
// 查找当前悬停的区域
|
||||
RegionInfo hoveredRegion = _drawnRectangles.FirstOrDefault(r => r.Index == _hoveredRegionIndex);
|
||||
@@ -570,6 +599,96 @@ namespace JoyD.Windows.CS
|
||||
/// <summary>
|
||||
/// 定时器每秒触发的事件处理方法
|
||||
/// </summary>
|
||||
/// <summary>
|
||||
/// 绘制矩形的八个句柄
|
||||
/// </summary>
|
||||
/// <param name="g">绘图对象</param>
|
||||
/// <param name="rectangle">要绘制句柄的矩形（控件坐标）</param>
|
||||
private void DrawHandles(Graphics g, Rectangle rectangle)
|
||||
{
|
||||
// 句柄大小
|
||||
int handleSize = 6;
|
||||
|
||||
// 句柄颜色
|
||||
Color handleColor = Color.White;
|
||||
Color handleBorderColor = Color.Black;
|
||||
|
||||
// 八个句柄的位置
|
||||
Point[] handlePoints = new Point[]
|
||||
{
|
||||
// 左上角
|
||||
new Point(rectangle.Left, rectangle.Top),
|
||||
// 上中
|
||||
new Point(rectangle.Left + rectangle.Width / 2, rectangle.Top),
|
||||
// 右上角
|
||||
new Point(rectangle.Right, rectangle.Top),
|
||||
// 右中
|
||||
new Point(rectangle.Right, rectangle.Top + rectangle.Height / 2),
|
||||
// 右下角
|
||||
new Point(rectangle.Right, rectangle.Bottom),
|
||||
// 下中
|
||||
new Point(rectangle.Left + rectangle.Width / 2, rectangle.Bottom),
|
||||
// 左下角
|
||||
new Point(rectangle.Left, rectangle.Bottom),
|
||||
// 左中
|
||||
new Point(rectangle.Left, rectangle.Top + rectangle.Height / 2)
|
||||
};
|
||||
|
||||
// 绘制每个句柄
|
||||
using (SolidBrush handleBrush = new SolidBrush(handleColor))
|
||||
using (Pen handleBorderPen = new Pen(handleBorderColor, 1))
|
||||
{
|
||||
foreach (Point point in handlePoints)
|
||||
{
|
||||
// 计算句柄矩形
|
||||
Rectangle handleRect = new Rectangle(
|
||||
point.X - handleSize / 2,
|
||||
point.Y - handleSize / 2,
|
||||
handleSize,
|
||||
handleSize);
|
||||
|
||||
// 绘制句柄（白色填充，黑色边框）
|
||||
g.FillRectangle(handleBrush, handleRect);
|
||||
g.DrawRectangle(handleBorderPen, handleRect);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 鼠标点击事件 - 处理区域选中
|
||||
/// </summary>
|
||||
private void PicBoxTemp_MouseClick(object sender, MouseEventArgs e)
|
||||
{
|
||||
// 仅在就绪状态（非绘制模式）下处理
|
||||
if (!_isDrawingMode && e.Button == MouseButtons.Left && picBoxTemp.Image != null)
|
||||
{
|
||||
// 将控件坐标转换为图像坐标
|
||||
Point imagePoint = ControlPointToImagePoint(e.Location);
|
||||
|
||||
// 检查是否点击在某个区域内
|
||||
bool clickedOnRegion = false;
|
||||
foreach (RegionInfo region in _drawnRectangles)
|
||||
{
|
||||
if (region.ImageRectangle.Contains(imagePoint))
|
||||
{
|
||||
// 选中或取消选中该区域
|
||||
_selectedRegionIndex = (_selectedRegionIndex == region.Index) ? -1 : region.Index;
|
||||
clickedOnRegion = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// 如果没有点击在任何区域上，取消选中
|
||||
if (!clickedOnRegion)
|
||||
{
|
||||
_selectedRegionIndex = -1;
|
||||
}
|
||||
|
||||
// 刷新绘制
|
||||
picBoxTemp.Invalidate();
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 当图像更新或控件大小变化时，重新创建叠加层图像
|
||||
/// 确保矩形框正确显示在新的尺寸下
|
||||
|
||||
Reference in New Issue
Block a user