add visual feedback

shadowsocks-csharp/View/MenuViewController.cs

@@ -387,7 +387,26 @@ namespace Shadowsocks.View
                     var success = controller.AddServerBySSURL(result.Text);
                     if (success)
                     {
-                        ShowConfigForm();
+                        float minX = Int32.MaxValue, minY = Int32.MaxValue, maxX = 0, maxY = 0;
+                        foreach (ResultPoint point in result.ResultPoints)
+                        {
+                            minX = Math.Min(minX, point.X);
+                            minY = Math.Min(minY, point.Y);
+                            maxX = Math.Max(maxX, point.X);
+                            maxY = Math.Max(maxY, point.Y);
+                        }
+                        // make it 20% larger
+                        float margin = (maxX - minX) * 0.20f;
+                        minX -= margin;
+                        maxX += margin;
+                        minY -= margin;
+                        maxY += margin;
+
+                        QRCodeSplashForm splash = new QRCodeSplashForm();
+                        splash.FormClosed += splash_FormClosed;
+                        splash.Location = new Point((int)minX, (int)minY);
+                        splash.Size = new Size((int)maxX - (int)minX, (int)maxY - (int)minY);
+                        splash.Show();
                         return;
                     }
                 }
@@ -395,6 +414,11 @@ namespace Shadowsocks.View
             }
         }
 
+        void splash_FormClosed(object sender, FormClosedEventArgs e)
+        {
+            ShowConfigForm();
+        }
+
 		private void AutoStartupItem_Click(object sender, EventArgs e) {
 			AutoStartupItem.Checked = !AutoStartupItem.Checked;
 			if (!AutoStartup.Set(AutoStartupItem.Checked)) {

shadowsocks-csharp/View/QRCodeForm.Designer.cs

@@ -34,10 +34,10 @@
             // 
             // pictureBox1
             // 
-            this.pictureBox1.Location = new System.Drawing.Point(9, 9);
+            this.pictureBox1.Location = new System.Drawing.Point(10, 10);
             this.pictureBox1.Margin = new System.Windows.Forms.Padding(0);
             this.pictureBox1.Name = "pictureBox1";
-            this.pictureBox1.Size = new System.Drawing.Size(210, 210);
+            this.pictureBox1.Size = new System.Drawing.Size(240, 240);
             this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Zoom;
             this.pictureBox1.TabIndex = 1;
             this.pictureBox1.TabStop = false;
@@ -55,7 +55,7 @@
             this.MaximizeBox = false;
             this.MinimizeBox = false;
             this.Name = "QRCodeForm";
-            this.Padding = new System.Windows.Forms.Padding(9);
+            this.Padding = new System.Windows.Forms.Padding(10);
             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
             this.Text = "QRCode";
             this.Load += new System.EventHandler(this.QRCodeForm_Load);

shadowsocks-csharp/View/QRCodeForm.cs

@@ -30,7 +30,7 @@ namespace Shadowsocks.View
             string qrText = ssconfig;
             QRCode code = ZXing.QrCode.Internal.Encoder.encode(qrText, ErrorCorrectionLevel.M);
             ByteMatrix m = code.Matrix;
-            int blockSize = Math.Max(200 / m.Height, 1);
+            int blockSize = Math.Max(pictureBox1.Height / m.Height, 1);
             Bitmap drawArea = new Bitmap((m.Width * blockSize), (m.Height * blockSize));
             using (Graphics g = Graphics.FromImage(drawArea))
             {

shadowsocks-csharp/shadowsocks-csharp.csproj

@@ -183,6 +183,12 @@
     <Compile Include="View\QRCodeForm.Designer.cs">
       <DependentUpon>QRCodeForm.cs</DependentUpon>
     </Compile>
+    <Compile Include="View\QRCodeSplashForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="View\QRCodeSplashForm.Designer.cs">
+      <DependentUpon>QRCodeSplashForm.cs</DependentUpon>
+    </Compile>
     <EmbeddedResource Include="View\ConfigForm.resx">
       <DependentUpon>ConfigForm.cs</DependentUpon>
       <SubType>Designer</SubType>
@@ -195,6 +201,9 @@
     <EmbeddedResource Include="View\QRCodeForm.resx">
       <DependentUpon>QRCodeForm.cs</DependentUpon>
     </EmbeddedResource>
+    <EmbeddedResource Include="View\QRCodeSplashForm.resx">
+      <DependentUpon>QRCodeSplashForm.cs</DependentUpon>
+    </EmbeddedResource>
     <None Include="app.config" />
     <None Include="app.manifest">
       <SubType>Designer</SubType>