diff --git a/shadowsocks-csharp/View/QRCodeSplashForm.cs b/shadowsocks-csharp/View/QRCodeSplashForm.cs
index 3bf48888..50b4ccd4 100755
--- a/shadowsocks-csharp/View/QRCodeSplashForm.cs
+++ b/shadowsocks-csharp/View/QRCodeSplashForm.cs
@@ -12,12 +12,13 @@ using System.Diagnostics;
namespace Shadowsocks.View
{
- public class QRCodeSplashForm : PerPixelAlphaForm
+ public class QRCodeSplashForm : Form
{
public Rectangle TargetRect;
public QRCodeSplashForm()
{
+ FormBorderStyle = FormBorderStyle.None;
this.Load += QRCodeSplashForm_Load;
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.BackColor = System.Drawing.Color.White;
@@ -69,16 +70,6 @@ namespace Shadowsocks.View
brush = new SolidBrush(Color.FromArgb(30, Color.Red));
}
- protected override CreateParams CreateParams
- {
- get
- {
- CreateParams cp = base.CreateParams;
- cp.ExStyle |= 0x00080000; // This form has to have the WS_EX_LAYERED extended style
- return cp;
- }
- }
-
void timer_Tick(object sender, EventArgs e)
{
double percent = (double)sw.ElapsedMilliseconds / 1000.0 / (double)ANIMATION_TIME;
@@ -148,6 +139,69 @@ namespace Shadowsocks.View
flashStep++;
}
}
+
+ // PerPixelAlphaForm.cs
+ // http://www.codeproject.com/Articles/1822/Per-Pixel-Alpha-Blend-in-C
+ // Rui Lopes
+ protected override CreateParams CreateParams
+ {
+ get
+ {
+ CreateParams cp = base.CreateParams;
+ cp.ExStyle |= 0x00080000; // This form has to have the WS_EX_LAYERED extended style
+ return cp;
+ }
+ }
+
+ public void SetBitmap(Bitmap bitmap)
+ {
+ SetBitmap(bitmap, 255);
+ }
+
+ /// Changes the current bitmap with a custom opacity level. Here is where all happens!
+ public void SetBitmap(Bitmap bitmap, byte opacity)
+ {
+ if (bitmap.PixelFormat != PixelFormat.Format32bppArgb)
+ throw new ApplicationException("The bitmap must be 32ppp with alpha-channel.");
+
+ // The idea of this is very simple,
+ // 1. Create a compatible DC with screen;
+ // 2. Select the bitmap with 32bpp with alpha-channel in the compatible DC;
+ // 3. Call the UpdateLayeredWindow.
+
+ IntPtr screenDc = Win32.GetDC(IntPtr.Zero);
+ IntPtr memDc = Win32.CreateCompatibleDC(screenDc);
+ IntPtr hBitmap = IntPtr.Zero;
+ IntPtr oldBitmap = IntPtr.Zero;
+
+ try
+ {
+ hBitmap = bitmap.GetHbitmap(Color.FromArgb(0)); // grab a GDI handle from this GDI+ bitmap
+ oldBitmap = Win32.SelectObject(memDc, hBitmap);
+
+ Win32.Size size = new Win32.Size(bitmap.Width, bitmap.Height);
+ Win32.Point pointSource = new Win32.Point(0, 0);
+ Win32.Point topPos = new Win32.Point(Left, Top);
+ Win32.BLENDFUNCTION blend = new Win32.BLENDFUNCTION();
+ blend.BlendOp = Win32.AC_SRC_OVER;
+ blend.BlendFlags = 0;
+ blend.SourceConstantAlpha = opacity;
+ blend.AlphaFormat = Win32.AC_SRC_ALPHA;
+
+ Win32.UpdateLayeredWindow(Handle, screenDc, ref topPos, ref size, memDc, ref pointSource, 0, ref blend, Win32.ULW_ALPHA);
+ }
+ finally
+ {
+ Win32.ReleaseDC(IntPtr.Zero, screenDc);
+ if (hBitmap != IntPtr.Zero)
+ {
+ Win32.SelectObject(memDc, oldBitmap);
+ //Windows.DeleteObject(hBitmap); // The documentation says that we have to use the Windows.DeleteObject... but since there is no such method I use the normal DeleteObject from Win32 GDI and it's working fine without any resource leak.
+ Win32.DeleteObject(hBitmap);
+ }
+ Win32.DeleteDC(memDc);
+ }
+ }
}
@@ -224,77 +278,4 @@ namespace Shadowsocks.View
[DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
public static extern int DeleteObject(IntPtr hObject);
}
-
-
- public class PerPixelAlphaForm : Form
- {
- // http://www.codeproject.com/Articles/1822/Per-Pixel-Alpha-Blend-in-C
- // Rui Lopes
-
- public PerPixelAlphaForm()
- {
- // This form should not have a border or else Windows will clip it.
- FormBorderStyle = FormBorderStyle.None;
- }
-
- public void SetBitmap(Bitmap bitmap)
- {
- SetBitmap(bitmap, 255);
- }
-
- /// Changes the current bitmap with a custom opacity level. Here is where all happens!
- public void SetBitmap(Bitmap bitmap, byte opacity)
- {
- if (bitmap.PixelFormat != PixelFormat.Format32bppArgb)
- throw new ApplicationException("The bitmap must be 32ppp with alpha-channel.");
-
- // The idea of this is very simple,
- // 1. Create a compatible DC with screen;
- // 2. Select the bitmap with 32bpp with alpha-channel in the compatible DC;
- // 3. Call the UpdateLayeredWindow.
-
- IntPtr screenDc = Win32.GetDC(IntPtr.Zero);
- IntPtr memDc = Win32.CreateCompatibleDC(screenDc);
- IntPtr hBitmap = IntPtr.Zero;
- IntPtr oldBitmap = IntPtr.Zero;
-
- try
- {
- hBitmap = bitmap.GetHbitmap(Color.FromArgb(0)); // grab a GDI handle from this GDI+ bitmap
- oldBitmap = Win32.SelectObject(memDc, hBitmap);
-
- Win32.Size size = new Win32.Size(bitmap.Width, bitmap.Height);
- Win32.Point pointSource = new Win32.Point(0, 0);
- Win32.Point topPos = new Win32.Point(Left, Top);
- Win32.BLENDFUNCTION blend = new Win32.BLENDFUNCTION();
- blend.BlendOp = Win32.AC_SRC_OVER;
- blend.BlendFlags = 0;
- blend.SourceConstantAlpha = opacity;
- blend.AlphaFormat = Win32.AC_SRC_ALPHA;
-
- Win32.UpdateLayeredWindow(Handle, screenDc, ref topPos, ref size, memDc, ref pointSource, 0, ref blend, Win32.ULW_ALPHA);
- }
- finally
- {
- Win32.ReleaseDC(IntPtr.Zero, screenDc);
- if (hBitmap != IntPtr.Zero)
- {
- Win32.SelectObject(memDc, oldBitmap);
- //Windows.DeleteObject(hBitmap); // The documentation says that we have to use the Windows.DeleteObject... but since there is no such method I use the normal DeleteObject from Win32 GDI and it's working fine without any resource leak.
- Win32.DeleteObject(hBitmap);
- }
- Win32.DeleteDC(memDc);
- }
- }
-
- protected override CreateParams CreateParams
- {
- get
- {
- CreateParams cp = base.CreateParams;
- cp.ExStyle |= 0x00080000; // This form has to have the WS_EX_LAYERED extended style
- return cp;
- }
- }
- }
}