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fix painting of text effects on retina with test

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This commit is contained in:
Sergey Malenkov
2016-09-20 22:30:02 +03:00
parent f4f3377d6c
commit 1564facc1e
1 changed files with 6 additions and 7 deletions
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platform/platform-api/src/com/intellij/ui/paint/EffectPainter.java
+6 -7
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@@ -245,7 +245,9 @@ public enum EffectPainter implements RegionPainter<Paint> {
}
};
private final ConcurrentHashMap<Long, BufferedImage> myCache = new ConcurrentHashMap<>();
// we should not recalculate caches when IDEA is on Retina and non-Retina
private final ConcurrentHashMap<Long, BufferedImage> myNormalCache = new ConcurrentHashMap<>();
private final ConcurrentHashMap<Long, BufferedImage> myRetinaCache = new ConcurrentHashMap<>();
abstract int getPeriod(int height);
@@ -263,12 +265,8 @@ public enum EffectPainter implements RegionPainter<Paint> {
BufferedImage getImage(Graphics2D g, Color color, int height) {
Long key = color.getRGB() ^ ((long)height << 32);
BufferedImage image = myCache.get(key);
if (image == null || UIUtil.isRetina(g) != (image instanceof JBHiDPIScaledImage)) {
image = createImage(g, color, height);
myCache.put(key, image);
}
return image;
ConcurrentHashMap<Long, BufferedImage> cache = UIUtil.isRetina(g) ? myRetinaCache : myNormalCache;
return cache.computeIfAbsent(key, k -> createImage(g, color, height));
}
BufferedImage createImage(Graphics2D g, Paint paint, int height) {
@@ -286,6 +284,7 @@ public enum EffectPainter implements RegionPainter<Paint> {
g.setComposite(AlphaComposite.SrcOver);
BufferedImage image = paint instanceof Color ? getImage(g, (Color)paint, height) : createImage(g, paint, height);
int period = image.getWidth(null);
if (image instanceof JBHiDPIScaledImage) period /= 2;
int offset = (x % period + period) % period; // normalize
for (int dx = -offset; dx < width; dx += period) {
UIUtil.drawImage(g, image, dx, 0, null);