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SvgPreviewControl: Add Background so that white .svg are visible (#25397)

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* SvgPreviewControl: Add checkered background so that white .svg are visible

* SvgPreviewControl: Move preview generation logic into own class

* SvgPreviewControl: Add possibility to configure background of svg preview pane via the settings ui

* SvgPreviewControl: Take user configuration into consideration when generating svg preview

* SvgPreviewControl: Do not generate preview file, if the actual size is under the 2mb limiation of WebView2

* SvgPreviewControl: Introduce SvgPreviewColorMode enumeration instead of using magic values

* SvgPreviewControl: Add additional checkered pattern shades

* SvgPreviewControl: Use newly introduced enums as default values
This commit is contained in:
Sebastian Zanoni
2023-04-21 18:54:57 +02:00
committed by GitHub
parent 3164e03ad4
commit 3a63a088ed
11 changed files with 328 additions and 6 deletions
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64
src/modules/previewpane/SvgPreviewHandler/SvgHTMLPreviewGenerator.cs Normal file
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// Copyright (c) Microsoft Corporation
// The Microsoft Corporation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Globalization;
using Settings.UI.Library.Enumerations;
namespace SvgPreviewHandler
{
internal sealed class SvgHTMLPreviewGenerator
{
private const string CheckeredBackgroundShadeLight = """
url('data:image/png;base64,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');
""";
private const string CheckeredBackgroundShadeMedium = """
url('data:image/png;base64,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');
""";
private const string CheckeredBackgroundShadeDark = """
url('data:image/png;base64,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');
""";
private const string HtmlTemplateSolidColor = """
<html>
<body style="background-color: {0}">
{1}
</body>
</html>
""";
private const string HtmlTemplateCheckered = """
<html>
<body style="background-image: {0}">
{1}
</body>
</html>
""";
private readonly Settings settings = new();
public string GeneratePreview(string svgData)
{
var colorMode = (SvgPreviewColorMode)settings.ColorMode;
return colorMode switch
{
SvgPreviewColorMode.SolidColor => string.Format(CultureInfo.InvariantCulture, HtmlTemplateSolidColor, ColorTranslator.ToHtml(settings.SolidColor), svgData),
SvgPreviewColorMode.Checkered => string.Format(CultureInfo.InvariantCulture, HtmlTemplateCheckered, GetConfiguredCheckeredShadeImage(), svgData),
SvgPreviewColorMode.Default or _ => string.Format(CultureInfo.InvariantCulture, HtmlTemplateSolidColor, ColorTranslator.ToHtml(settings.ThemeColor), svgData),
};
}
private string GetConfiguredCheckeredShadeImage()
{
var checkeredShade = (SvgPreviewCheckeredShade)settings.CheckeredShade;
return checkeredShade switch
{
SvgPreviewCheckeredShade.Light=> CheckeredBackgroundShadeLight,
SvgPreviewCheckeredShade.Medium => CheckeredBackgroundShadeMedium,
SvgPreviewCheckeredShade.Dark or _ => CheckeredBackgroundShadeDark,
};
}
}
}