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[android] Implement fast path for SVGLength css value resolution

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This commit is contained in:
Mikael Sand
2018-10-18 19:44:42 +03:00
parent 50eee0abe7
commit 2a449c3bd4
1 changed files with 60 additions and 3 deletions
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android/src/main/java/com/horcrux/svg/VirtualView.java
+60 -3
View File
@@ -329,15 +329,72 @@ abstract public class VirtualView extends ViewGroup {
}
double relativeOnWidth(SVGLength length) {
return PropHelper.fromRelative(length, getCanvasWidth(), 0, mScale, getFontSizeFromContext());
SVGLengthUnitType unit = length.unit;
if (unit == SVGLengthUnitType.SVG_LENGTHTYPE_NUMBER){
return length.value * mScale;
} else if (unit == SVGLengthUnitType.SVG_LENGTHTYPE_PERCENTAGE){
return length.value / 100 * getCanvasWidth();
}
return fromRelativeFast(length);
}
double relativeOnHeight(SVGLength length) {
return PropHelper.fromRelative(length, getCanvasHeight(), 0, mScale, getFontSizeFromContext());
SVGLengthUnitType unit = length.unit;
if (unit == SVGLengthUnitType.SVG_LENGTHTYPE_NUMBER){
return length.value * mScale;
} else if (unit == SVGLengthUnitType.SVG_LENGTHTYPE_PERCENTAGE){
return length.value / 100 * getCanvasHeight();
}
return fromRelativeFast(length);
}
double relativeOnOther(SVGLength length) {
return PropHelper.fromRelative(length, getCanvasDiagonal(), 0, mScale, getFontSizeFromContext());
SVGLengthUnitType unit = length.unit;
if (unit == SVGLengthUnitType.SVG_LENGTHTYPE_NUMBER){
return length.value * mScale;
} else if (unit == SVGLengthUnitType.SVG_LENGTHTYPE_PERCENTAGE){
return length.value / 100 * getCanvasDiagonal();
}
return fromRelativeFast(length);
}
/**
* Converts SVGLength into px / user units
* in the current user coordinate system
*
* @param length length string
* @return value in the current user coordinate system
*/
double fromRelativeFast(SVGLength length) {
double unit;
switch (length.unit) {
case SVG_LENGTHTYPE_EMS:
unit = getFontSizeFromContext();
break;
case SVG_LENGTHTYPE_EXS:
unit = getFontSizeFromContext() / 2;
break;
case SVG_LENGTHTYPE_CM:
unit = 35.43307;
break;
case SVG_LENGTHTYPE_MM:
unit = 3.543307;
break;
case SVG_LENGTHTYPE_IN:
unit = 90;
break;
case SVG_LENGTHTYPE_PT:
unit = 1.25;
break;
case SVG_LENGTHTYPE_PC:
unit = 15;
break;
default:
unit = 1;
}
return length.value * unit * mScale;
}
private float getCanvasWidth() {