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more direct method for obtaining floating-point character advance - should be faster (IDEA-165448)

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This commit is contained in:
Dmitry Batrak
2016-12-22 15:46:30 +03:00
parent 3e61ed5ee2
commit 0c2df406f5
1 changed files with 7 additions and 10 deletions
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platform/platform-impl/src/com/intellij/openapi/editor/impl/view/FontLayoutService.java
+7 -10
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@@ -20,8 +20,7 @@ import com.intellij.util.ReflectionUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.annotations.TestOnly;
import sun.font.FontStrike;
import sun.font.FontUtilities;
import sun.font.FontDesignMetrics;
import java.awt.*;
import java.awt.font.FontRenderContext;
@@ -65,12 +64,12 @@ public abstract class FontLayoutService {
// this flag is supported by JetBrains Runtime
private static final int LAYOUT_NO_PAIRED_CHARS_AT_SCRIPT_SPLIT = 8;
private final Method getCodePointAdvanceMethod;
private final Method myHandleCharWidthMethod;
private DefaultFontLayoutService() {
getCodePointAdvanceMethod = ReflectionUtil.getDeclaredMethod(FontStrike.class, "getCodePointAdvance", int.class);
if (getCodePointAdvanceMethod == null) {
LOG.warn("Couldn't access FontStrike.getCodePointAdvance method");
myHandleCharWidthMethod = ReflectionUtil.getDeclaredMethod(FontDesignMetrics.class, "handleCharWidth", int.class);
if (myHandleCharWidthMethod == null) {
LOG.warn("Couldn't access FontDesignMetrics.handleCharWidth method");
}
}
@@ -94,11 +93,9 @@ public abstract class FontLayoutService {
@Override
public float charWidth2D(@NotNull FontMetrics fontMetrics, int codePoint) {
if (getCodePointAdvanceMethod != null) {
Font font = fontMetrics.getFont();
FontStrike fs = FontUtilities.getFont2D(font).getStrike(font, fontMetrics.getFontRenderContext());
if (myHandleCharWidthMethod != null && fontMetrics instanceof FontDesignMetrics) {
try {
return (float)getCodePointAdvanceMethod.invoke(fs, codePoint);
return (float)myHandleCharWidthMethod.invoke(fontMetrics, codePoint);
}
catch (Exception e) {
LOG.debug(e);