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Merge pull request #528 from dlsc-software-consulting-gmbh/features-a…
…dd-px2em-converter Add Px2EmConverter; Hide fields in ShowcaseOverview box that are not used
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96 changes: 96 additions & 0 deletions
96
components/src/main/java/com/dlsc/jfxcentral2/utilities/pxemconverter/Px2EmConverter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| package com.dlsc.jfxcentral2.utilities.pxemconverter; | ||
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| import com.dlsc.jfxcentral2.utils.NumberUtil; | ||
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| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.nio.file.Files; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Objects; | ||
| import java.util.regex.Matcher; | ||
| import java.util.regex.Pattern; | ||
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| public class Px2EmConverter { | ||
| private Px2EmConverter() { | ||
| } | ||
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| /** | ||
| * Converts px units to em units for specified CSS properties in a CSS file. | ||
| * | ||
| * @param sourceFile the source CSS file | ||
| * @param targetFile the target CSS file | ||
| * @param propertiesToConvert a list of CSS properties to be converted | ||
| * @param baseFontSize the base font size for em unit calculation | ||
| * @param addComment whether to add original value as comment | ||
| * @throws IOException if an I/O error occurs | ||
| */ | ||
| public static void convert(File sourceFile, File targetFile, List<String> propertiesToConvert, double baseFontSize, boolean addComment) throws IOException { | ||
| String content = Files.readString(sourceFile.toPath()); | ||
| Pattern commentPattern = Pattern.compile("/\\*.*?\\*/"); | ||
| Matcher commentMatcher = commentPattern.matcher(content); | ||
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| Map<Integer, String> commentsMap = new HashMap<>(); | ||
| while (commentMatcher.find()) { | ||
| commentsMap.put(commentMatcher.start(), commentMatcher.group()); | ||
| } | ||
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| for (String property : propertiesToConvert) { | ||
| String regex = property + "\\s*:\\s*([0-9]+(?:\\.[0-9]+)?(?:em|px)?(?:\\s*[0-9]+(?:\\.[0-9]+)?(?:em|px)?)*)\\s*;?"; | ||
| Pattern pattern = Pattern.compile(regex); | ||
| Matcher matcher = pattern.matcher(content); | ||
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| StringBuilder sb = new StringBuilder(); | ||
| while (matcher.find()) { | ||
| int start = matcher.start(); | ||
| int end = matcher.end(); | ||
| boolean inComment = false; | ||
| for (Map.Entry<Integer, String> entry : commentsMap.entrySet()) { | ||
| int commentStart = entry.getKey(); | ||
| int commentEnd = commentStart + entry.getValue().length(); | ||
| if (start >= commentStart && end <= commentEnd) { | ||
| inComment = true; | ||
| break; | ||
| } | ||
| } | ||
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| if (!inComment) { | ||
| String values = matcher.group(1); | ||
| if (!values.contains("em")) { | ||
| String emValues = convertToEm(values, baseFontSize); | ||
| if (addComment) { | ||
| matcher.appendReplacement(sb, property + ": " + emValues + ";" + "/* " + values + " */"); | ||
| } else { | ||
| matcher.appendReplacement(sb, property + ": " + emValues + ";"); | ||
| } | ||
| } else { | ||
| matcher.appendReplacement(sb, property + ": " + values + ";"); | ||
| } | ||
| } | ||
| } | ||
| matcher.appendTail(sb); | ||
| content = sb.toString(); | ||
| } | ||
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| Files.writeString(Objects.requireNonNullElse(targetFile, sourceFile).toPath(), content); | ||
| } | ||
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| public static String convertToEm(String values, double baseFontSize) { | ||
| if (values.trim().endsWith("em")) { | ||
| return values.trim(); | ||
| } | ||
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| String[] valueArray = values.split("\\s+"); | ||
| StringBuilder emBuilder = new StringBuilder(); | ||
| for (String value : valueArray) { | ||
| if (!value.isEmpty()) { | ||
| double px = Double.parseDouble(value.replaceAll("px", "")); | ||
| double em = px / baseFontSize; | ||
| emBuilder.append(NumberUtil.trimTrailingZeros(em, 5)).append("em").append(" "); | ||
| } | ||
| } | ||
| return emBuilder.toString().trim(); | ||
| } | ||
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| } |
10 changes: 10 additions & 0 deletions
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components/src/main/java/com/dlsc/jfxcentral2/utilities/pxemconverter/Px2EmRules.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| package com.dlsc.jfxcentral2.utilities.pxemconverter; | ||
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| import java.util.List; | ||
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| /** | ||
| * convertibleProps: properties that can be converted from px to em; | ||
| * ignoredProps: properties that should be ignored when converting from px to em. | ||
| */ | ||
| public record Px2EmRules(List<String> convertibleProps, List<String> ignoredProps) { | ||
| } |
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