[vcs-log] calculate row height so that labels could nicely fit

platform/vcs-log/impl/src/com/intellij/vcs/log/ui/frame/VcsLogGraphTable.java

@@ -91,6 +91,7 @@ public class VcsLogGraphTable extends JBTable implements TypeSafeDataProvider, C
       }
     }
   };
+  private final GraphCommitCellRender myGraphCommitCellRenderer;
 
   private boolean myColumnsSizeInitialized = false;
 
@@ -112,12 +113,12 @@ public class VcsLogGraphTable extends JBTable implements TypeSafeDataProvider, C
     super();
     myUI = UI;
     myLogDataHolder = logDataHolder;
+    myGraphCommitCellRenderer = new GraphCommitCellRender(myUI.getColorManager(), logDataHolder, myGraphCellPainter, this);
 
     setDefaultRenderer(VirtualFile.class, new RootCellRenderer(myUI));
-    setDefaultRenderer(GraphCommitCell.class, new GraphCommitCellRender(myUI.getColorManager(), logDataHolder, myGraphCellPainter, this));
+    setDefaultRenderer(GraphCommitCell.class, myGraphCommitCellRenderer);
     setDefaultRenderer(String.class, new StringCellRenderer());
 
-    setRowHeight(22);
     setShowHorizontalLines(false);
     setIntercellSpacing(JBUI.emptySize());
 
@@ -750,6 +751,11 @@ public class VcsLogGraphTable extends JBTable implements TypeSafeDataProvider, C
     return myDummyEditor;
   }
 
+  @Override
+  public int getRowHeight() {
+    return myGraphCommitCellRenderer.getPreferredHeight();
+  }
+
   private class StringCellRenderer extends ColoredTableCellRenderer {
     @Override
     protected void customizeCellRenderer(JTable table, Object value, boolean selected, boolean hasFocus, int row, int column) {

platform/vcs-log/impl/src/com/intellij/vcs/log/ui/render/GraphCommitCellRender.java

@@ -49,6 +49,17 @@ public class GraphCommitCellRender extends ColoredTableCellRenderer {
     myIssueLinkRenderer = new IssueLinkRenderer(dataHolder.getProject(), this);
   }
 
+  @NotNull
+  @Override
+  public Dimension getPreferredSize() {
+    Dimension preferredSize = super.getPreferredSize();
+    return new Dimension(preferredSize.width, getPreferredHeight());
+  }
+
+  public int getPreferredHeight() {
+    return myLabelPainter.calculateSize("", getFontMetrics(LabelPainters.getFont())).height + 4;
+  }
+
   @Override
   public void paintComponent(Graphics g) {
     super.paintComponent(g);