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允许标题栏停靠容器顶部自动最大化，最大化时拖动标题栏自动恢复原窗口，新增记录最大化前窗体位置（恢复后自动回到原位置，而非固定位置）

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This commit is contained in:
Owen Chang 2020-05-28 15:50:16 +08:00
parent d329c33d29
commit e5f27b35c3
1 changed files with 53 additions and 8 deletions
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53
SunnyUI/Forms/UIForm.cs
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@ -384,6 +384,7 @@ namespace Sunny.UI
}
private Size size;
private Point mLocation; // 缩放前的窗体位置
private void ShowMaximize()
{
@ -401,6 +402,7 @@ namespace Sunny.UI
if (windowState == FormWindowState.Normal)
{
size = Size;
mLocation = Location;
Width = ShowFullScreen ? screen.Bounds.Width : screen.WorkingArea.Width;
Height = ShowFullScreen ? screen.Bounds.Height : screen.WorkingArea.Height;
@ -417,10 +419,12 @@ namespace Sunny.UI
{
size = new Size(800, 600);
}
if (mLocation.IsEmpty)
{
mLocation = screen.WorkingArea.Location;
}
Size = size;
Left = screen.Bounds.Left + screen.WorkingArea.Width / 2 - Size.Width / 2;
Top = screen.Bounds.Top + screen.WorkingArea.Height / 2 - Size.Height / 2;
Location = mLocation;
StartPosition = FormStartPosition.CenterScreen;
SetFormRoundRectRegion(this, ShowRadius ? 5 : 0);
windowState = FormWindowState.Normal;
@ -441,7 +445,6 @@ namespace Sunny.UI
if (InControlBox || InMaxBox || InMinBox) return;
if (!ShowTitle) return;
if (e.Y > Padding.Top) return;
if (windowState == FormWindowState.Maximized) return;
if (e.Button == MouseButtons.Left)
{
@ -466,6 +469,33 @@ namespace Sunny.UI
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (FormMoveMouseDown)
{
int screenIndex = 0;
for (int i = 0; i < Screen.AllScreens.Length; i++)
{
if (MousePos.InRect(Screen.AllScreens[i].Bounds))
{
screenIndex = i;
break;
}
}
Screen screen = Screen.AllScreens[screenIndex];
if (MousePosition.Y == 0 && MaximizeBox)
{
ShowMaximize();
}
if(Top < screen.WorkingArea.Top) // 防止窗体上移时标题栏超出容器，导致后续无法移动
{
Top = screen.WorkingArea.Top;
}
else if(Top > screen.WorkingArea.Bottom) // 防止窗体下移时标题栏超出容器，导致后续无法移动
{
Top = screen.WorkingArea.Bottom - 10;
}
}
FormMoveMouseDown = false;
}
@ -474,12 +504,27 @@ namespace Sunny.UI
MousePos = PointToScreen(e.Location);
if (FormMoveMouseDown)
{
if (this.windowState == FormWindowState.Maximized)
{
Point pt = MousePosition;
int MaximizedWidth = Width;
int LocationX = Left;
ShowMaximize();
// 计算等比例缩放后，鼠标与原位置的相对位移
mouseOffset.X -= Math.Abs(mouseOffset.X) - (mouseOffset.X - LocationX) * Width / MaximizedWidth;
int offsetX = mouseOffset.X - pt.X;
int offsetY = mouseOffset.Y - pt.Y;
Location = new Point(offsetX, offsetY);
}
else
{
Point pt = MousePosition;
int offsetX = mouseOffset.X - pt.X;
int offsetY = mouseOffset.Y - pt.Y;
Location = new Point(FormLocation.X - offsetX, FormLocation.Y - offsetY);
}
}
else
{
if (FormBorderStyle == FormBorderStyle.None)