API

build.gradle

@@ -5,7 +5,7 @@ plugins {
 }
 
 group = 'com.labelzoom.api'
-version = '1.0.10'
+version = '1.0.11'
 
 repositories {
     mavenCentral()

src/main/java/com/labelzoom/api/util/DpiUtility.java

@@ -0,0 +1,108 @@
+package com.labelzoom.api.util;
+
+/* Copyright (C) 2021, LabelZoom, a subsidiary of RJF Technology Solutions, Inc.
+ * All rights reserved.  Proprietary and confidential.
+ *
+ * This file is subject to the license terms found at
+ * https://www.labelzoom.net/end-user-license-agreement/
+ *
+ * The methods and techniques described herein are considered
+ * confidential and/or trade secrets.
+ * No part of this file may be copied, modified, propagated,
+ * or distributed except as authorized by the license.
+ */
+
+import com.labelzoom.api.model.components.*;
+import com.labelzoom.api.model.components.barcodes.ABarcode;
+import com.labelzoom.api.model.components.barcodes.linear.ALinearBarcode;
+
+import java.util.List;
+
+public class DpiUtility
+{
+    public static final float POINTS_TO_INCHES = 1.0f / 72.0f; // 1 pt = 1/72 inch
+    public static final int INCHES_TO_POINTS = 72;
+
+    private final double scalingFactor;
+    private final double fontScalingFactor;
+
+    public DpiUtility(final int sourceDpi, final int targetDpi, final int sourceFontDpi, final int targetFontDpi)
+    {
+        this.scalingFactor = (double)targetDpi / (double)sourceDpi;
+        this.fontScalingFactor = (double)targetFontDpi / (double)sourceFontDpi;
+    }
+
+    private float applyResize(final float sourceValue)
+    {
+        return (float)(((double)sourceValue) * scalingFactor);
+    }
+
+    private int applyResize(final int sourceValue)
+    {
+        return Math.round(applyResize((float)sourceValue));
+    }
+
+    private float applyFontResize(final float sourceValue)
+    {
+        return (float)(((double)sourceValue) * fontScalingFactor);
+    }
+
+    public CLabel resizeLabel(final CLabel label)
+    {
+        final CLabel clone = label.clone(true);
+        clone.setHeight(applyResize(label.getHeight()));
+        clone.setWidth(applyResize(label.getWidth()));
+        shiftElements(clone.getElements());
+        return clone;
+    }
+
+    private void shiftElements(final List<AComponent> elements)
+    {
+        for (final AComponent component : elements)
+        {
+            component.setTop(applyResize(component.getTop()));
+            component.setLeft(applyResize(component.getLeft()));
+            if (component instanceof AFontComponent)
+            {
+                final AFontComponent fontComponent = (AFontComponent)component;
+                fontComponent.setFontSize(applyFontResize(fontComponent.getFontSize()));
+                if (fontComponent instanceof CVariableText)
+                {
+                    final CVariableText variableText = (CVariableText) fontComponent;
+                    if (!variableText.isAutoSize())
+                    {
+                        variableText.setWidth(applyResize(variableText.getWidth()));
+                        variableText.setHeight(applyResize(variableText.getHeight()));
+                    }
+                }
+            }
+            else if (component instanceof ABarcode)
+            {
+                if (component instanceof ALinearBarcode)
+                {
+                    final ALinearBarcode linearBarcode = (ALinearBarcode)component;
+                    linearBarcode.setHeight(applyResize(linearBarcode.getHeight()));
+                }
+            }
+            else if (component instanceof CLine)
+            {
+                final CLine line = (CLine)component;
+                line.setLength(applyResize(line.getLength()));
+                line.setThickness(Math.max(applyResize(line.getThickness()), 1)); // We don't ever want thickness to be less than 1, otherwise it won't show up in the design tab
+            }
+            else if (component instanceof CRectangle)
+            {
+                final CRectangle rectangle = (CRectangle) component;
+                rectangle.setWidth(applyResize(rectangle.getWidth()));
+                rectangle.setHeight(applyResize(rectangle.getHeight()));
+                rectangle.setThickness(applyResize(rectangle.getThickness()));
+            }
+            else if (component instanceof CImage)
+            {
+                final CImage image = (CImage)component;
+                image.setHorizontalScaling(applyResize(image.getHorizontalScaling()));
+                image.setVerticalScaling(applyResize(image.getVerticalScaling()));
+            }
+        }
+    }
+}