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basic support for mm,cm and in units

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This commit is contained in:
hneemann 2018-12-06 08:25:22 +01:00
parent a284b45b67
commit 92d1f0575b
2 changed files with 16 additions and 0 deletions
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13
src/main/java/de/neemann/digital/draw/shapes/custom/svg/Context.java
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@ -40,11 +40,16 @@ class Context {
private float strokeOpacity;
private float thickness;
private float fontSize;
private float pixelPerMM;
private String textAnchor;
private boolean fillRuleEvenOdd;
private HashMap<String, String> classesMap;
Context() {
this(72 / 25.4f * 4 / 3); // 72 DPI per default
}
Context(float pixelsPerMM) {
parent = null;
tr = Transform.IDENTITY;
thickness = 1;
@ -53,6 +58,7 @@ class Context {
fill = Color.BLACK;
fillOpacity = 1;
strokeOpacity = 1;
this.pixelPerMM = pixelsPerMM;
}
private Context(Context parent) {
@ -66,6 +72,7 @@ class Context {
fontSize = parent.fontSize;
textAnchor = parent.textAnchor;
fillRuleEvenOdd = parent.fillRuleEvenOdd;
pixelPerMM = parent.pixelPerMM;
}
Context(Context parent, Element element) throws SvgException {
@ -260,6 +267,12 @@ class Context {
return 16 * s;
case "px":
return s;
case "mm":
return s * c.pixelPerMM;
case "cm":
return 10 * s * c.pixelPerMM;
case "in":
return 25.4f * s * c.pixelPerMM;
default:
return c.getFontSize();
}

3
src/test/java/de/neemann/digital/draw/shapes/custom/svg/ContextTest.java
View File

@ -43,6 +43,9 @@ public class ContextTest extends TestCase {
assertEquals(10, Context.readStyle(new Context(), "font-size:10px").getFontSize(), 1e-4);
assertEquals(20, Context.readStyle(new Context(), "font-size:10;font-size:2em").getFontSize(), 1e-4);
assertEquals(15, Context.readStyle(new Context(), "font-size:10;font-size:150%").getFontSize(), 1e-4);
assertEquals(96, Context.readStyle(new Context(), "font-size:25.4mm").getFontSize(), 1e-4);
assertEquals(96, Context.readStyle(new Context(), "font-size:2.54cm").getFontSize(), 1e-4);
assertEquals(96, Context.readStyle(new Context(), "font-size:1in").getFontSize(), 1e-4);
}
}