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NigelThorneNigelThorne
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Barcodes you can use backgrounds with
1 parent 079c236 commit 2fb719b

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5 files changed

+182
-66
lines changed

5 files changed

+182
-66
lines changed

‎QRCoder/LogoQRCode.cs

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Original file line numberDiff line numberDiff line change
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using System;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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namespace QRCoder
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{
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public class LogoQRCode : AbstractQRCode, IDisposable
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{
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/// <summary>
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/// Constructor without params to be used in COM Objects connections
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/// </summary>
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public LogoQRCode() { }
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public LogoQRCode(QRCodeData data) : base(data) { }
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public Bitmap GetGraphic(QRCodeData qrCodeData,
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int pixelsPerModule,
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int pixelSize,
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Color darkColor,
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Color lightColor,
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bool drawQuietZones = false,
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Bitmap reticalImage = null,
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Base64QRCode.ImageType imgType = Base64QRCode.ImageType.Png,
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Bitmap backgroundImage = null)
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{
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int numModules = qrCodeData.ModuleMatrix.Count - (drawQuietZones ? 0 : 8);
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var offset = (drawQuietZones ? 0 : 4);
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int size = numModules * pixelsPerModule;
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var moduleMargin = pixelsPerModule - pixelSize;
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Bitmap bitmap = backgroundImage ?? new Bitmap(size, size);
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bitmap = Resize(bitmap, size);
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using (Graphics graphics = Graphics.FromImage(bitmap))
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{
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using (SolidBrush lightBrush = new SolidBrush(lightColor))
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{
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using (SolidBrush darkBrush = new SolidBrush(darkColor))
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{
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// make background transparent if you don't have an image
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if (backgroundImage == null)
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{
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using (var brush = new SolidBrush(Color.Transparent))
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{
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graphics.FillRectangle(brush, new Rectangle(0, 0, size, size));
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}
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}
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for (int x = 0; x < numModules; x += 1)
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{
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for (int y = 0; y < numModules; y += 1)
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{
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var solidBrush = (Brush)(qrCodeData.ModuleMatrix[offset + y][offset + x] ? darkBrush : lightBrush);
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if (IsPartOfRetical(x, y, numModules, offset))
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if (reticalImage == null)
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graphics.FillRectangle(solidBrush, new Rectangle(x * pixelsPerModule, y * pixelsPerModule, pixelsPerModule, pixelsPerModule));
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else
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graphics.FillEllipse(solidBrush, new Rectangle(x * pixelsPerModule + moduleMargin, y * pixelsPerModule + moduleMargin, pixelSize, pixelSize));
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}
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}
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if (reticalImage != null)
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{
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var reticleSize = 7 * pixelsPerModule;
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graphics.DrawImage(reticalImage, new Rectangle(0, 0, reticleSize, reticleSize));
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graphics.DrawImage(reticalImage, new Rectangle(size - reticleSize, 0, reticleSize, reticleSize));
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graphics.DrawImage(reticalImage, new Rectangle(0, size - reticleSize, reticleSize, reticleSize));
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}
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graphics.Save();
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}
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}
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}
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return bitmap;
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}
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private bool IsPartOfRetical(int x, int y, int numModules, int offset)
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{
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var cornerSize = 7 + offset;
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return
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(x < cornerSize && y < cornerSize) ||
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(x > (numModules - cornerSize) && y < cornerSize) ||
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(x < cornerSize && y < (numModules - cornerSize));
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}
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private Bitmap Resize(Bitmap image, int size)
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{
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float scale = Math.Min((float)size / image.Width, (float)size / image.Height);
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var scaleWidth = (int)(image.Width * scale);
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var scaleHeight = (int)(image.Height * scale);
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var scaledImage = new Bitmap(image, new Size(scaleWidth, scaleHeight));
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var bm = new Bitmap(size, size);
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using (Graphics graphics = Graphics.FromImage(bm))
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{
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using (var brush = new SolidBrush(Color.Transparent))
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{
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graphics.FillRectangle(brush, new Rectangle(0, 0, size, size));
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graphics.InterpolationMode = InterpolationMode.High;
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graphics.CompositingQuality = CompositingQuality.HighQuality;
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graphics.SmoothingMode = SmoothingMode.AntiAlias;
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graphics.DrawImage(scaledImage, new Rectangle((size / 2) - (scaledImage.Width / 2), (size / 2) - (scaledImage.Height / 2), scaledImage.Width, scaledImage.Height));
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}
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}
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return bm;
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}
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}
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}

‎QRCoder/QRCode.cs

Lines changed: 2 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -93,17 +93,9 @@ public Bitmap GetGraphic(int pixelsPerModule, Color darkColor, Color lightColor,
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{
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for (var y = 0; y < size + offset; y = y + pixelsPerModule)
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{
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var module = this.QrCodeData.ModuleMatrix[(y + pixelsPerModule) / pixelsPerModule - 1][(x + pixelsPerModule) / pixelsPerModule - 1];
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var moduleBrush = this.QrCodeData.ModuleMatrix[(y + pixelsPerModule) / pixelsPerModule - 1][(x + pixelsPerModule) / pixelsPerModule - 1] ? darkBrush : lightBrush;
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if (module)
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{
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var r = new Rectangle(x - offset, y - offset, pixelsPerModule, pixelsPerModule);
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gfx.FillRectangle(darkBrush, r);
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}
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else
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{
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gfx.FillRectangle(lightBrush, new Rectangle(x - offset, y - offset, pixelsPerModule, pixelsPerModule));
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}
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gfx.FillRectangle(moduleBrush , new Rectangle(x - offset, y - offset, pixelsPerModule, pixelsPerModule));
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}
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}
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‎QRCoderDemoUWP/QRCoderDemoUWP.csproj

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<AssemblyName>QRCoderDemoUWP</AssemblyName>
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<DefaultLanguage>en-US</DefaultLanguage>
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<TargetPlatformIdentifier>UAP</TargetPlatformIdentifier>
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<TargetPlatformVersion>10.0.10586.0</TargetPlatformVersion>
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<TargetPlatformMinVersion>10.0.10240.0</TargetPlatformMinVersion>
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<TargetPlatformVersion>10.0.18362.0</TargetPlatformVersion>
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<TargetPlatformMinVersion>10.0.18362.0</TargetPlatformMinVersion>
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<MinimumVisualStudioVersion>14</MinimumVisualStudioVersion>
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<FileAlignment>512</FileAlignment>
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<ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
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<PackageCertificateKeyFile>QRCoderDemoUWP_TemporaryKey.pfx</PackageCertificateKeyFile>
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<RuntimeIdentifiers>win10-arm;win10-arm-aot;win10-x86;win10-x86-aot;win10-x64;win10-x64-aot</RuntimeIdentifiers>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
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<DebugSymbols>true</DebugSymbols>
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<Prefer32Bit>true</Prefer32Bit>
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<UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
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</PropertyGroup>
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<ItemGroup>
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<!-- A reference to the entire .Net Framework and Windows SDK are automatically included -->
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<None Include="project.json" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="App.xaml.cs">
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<DependentUpon>App.xaml</DependentUpon>
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<HintPath>..\QRCoder\bin\Debug\netstandard1.1\QRCoder.dll</HintPath>
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</Reference>
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</ItemGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
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<Version>5.0.0</Version>
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</PackageReference>
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</ItemGroup>
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<PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '14.0' ">
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<VisualStudioVersion>14.0</VisualStudioVersion>
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</PropertyGroup>

‎QRCoderDemoUWP/project.json

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This file was deleted.

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