From fd81c0b861d73121e3cfded29116690517b902ba Mon Sep 17 00:00:00 2001
From: gmungoc <g.m.carstairs@dundee.ac.uk>
Date: Tue, 22 Aug 2017 11:31:57 +0100
Subject: [PATCH] JAL-2609 unit test for annotations displayed case

---
 test/jalview/gui/SeqCanvasTest.java |   93 +++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)

diff --git a/test/jalview/gui/SeqCanvasTest.java b/test/jalview/gui/SeqCanvasTest.java
index e387322..3722e47 100644
--- a/test/jalview/gui/SeqCanvasTest.java
+++ b/test/jalview/gui/SeqCanvasTest.java
@@ -181,4 +181,97 @@ public class SeqCanvasTest
     testee.calculateWrappedGeometry(canvasWidth, canvasHeight);
     assertEquals(PA.getValue(testee, "wrappedVisibleWidths"), 1);
   }
+
+  /**
+   * Test the method that computes wrapped width in residues, height of wrapped
+   * widths in pixels, and the number of widths visible
+   */
+  @Test(groups = "Functional")
+  public void testCalculateWrappedGeometry_withAnnotations()
+  {
+    AlignFrame af = new FileLoader().LoadFileWaitTillLoaded(
+            "examples/uniref50.fa", DataSourceType.FILE);
+    AlignViewport av = af.getViewport();
+    AlignmentI al = av.getAlignment();
+    assertEquals(al.getWidth(), 157);
+    assertEquals(al.getHeight(), 15);
+  
+    av.setWrapAlignment(true);
+    av.setFont(new Font("SansSerif", Font.PLAIN, 14), true);
+    int charHeight = av.getCharHeight();
+    int charWidth = av.getCharWidth();
+    assertEquals(charHeight, 17);
+    assertEquals(charWidth, 12);
+  
+    SeqCanvas testee = af.alignPanel.getSeqPanel().seqCanvas;
+  
+    /*
+     * first with scales above, left, right
+     */
+    av.setShowAnnotation(true);
+    av.setScaleAboveWrapped(true);
+    av.setScaleLeftWrapped(true);
+    av.setScaleRightWrapped(true);
+    FontMetrics fm = SwingUtilities2.getFontMetrics(testee, av.getFont());
+    int labelWidth = fm.stringWidth("00000"); // width of 3 digits and 2 spaces
+    assertEquals(labelWidth, 45); // note this is not 5 * charWidth
+    int annotationHeight = testee.getAnnotationHeight();
+
+    /*
+     * width 400 pixels leaves (400 - 2*labelWidth) for residue columns
+     * take the whole multiple of character widths
+     */
+    int canvasWidth = 400;
+    int canvasHeight = 300;
+    int residueColumns = (canvasWidth - 2 * labelWidth) / charWidth;
+    int wrappedWidth = testee.calculateWrappedGeometry(canvasWidth, canvasHeight);
+    assertEquals(wrappedWidth, residueColumns);
+    assertEquals(PA.getValue(testee, "labelWidthWest"), labelWidth);
+    assertEquals(PA.getValue(testee, "labelWidthEast"), labelWidth);
+    assertEquals(PA.getValue(testee, "wrappedSpaceAboveAlignment"),
+            2 * charHeight);
+    int repeatingHeight = (int) PA.getValue(testee, "wrappedRepeatHeightPx");
+    assertEquals(repeatingHeight, charHeight * (2 + al.getHeight())
+            + annotationHeight);
+    assertEquals(PA.getValue(testee, "wrappedVisibleWidths"), 1);
+  
+    /*
+     * repeat height is 17 * (2 + 15) = 289 + annotationHeight = 507
+     * make canvas height 2 * 289 + 3 * charHeight so just enough to
+     * draw 2 widths and the first sequence of a third
+     */
+    canvasHeight = charHeight * (17 * 2 + 3) + 2 * annotationHeight;
+    testee.calculateWrappedGeometry(canvasWidth, canvasHeight);
+    assertEquals(PA.getValue(testee, "wrappedVisibleWidths"), 3);
+  
+    /*
+     * reduce canvas height by 1 pixel - should not be enough height
+     * to draw 3 widths
+     */
+    canvasHeight -= 1;
+    testee.calculateWrappedGeometry(canvasWidth, canvasHeight);
+    assertEquals(PA.getValue(testee, "wrappedVisibleWidths"), 2);
+  
+    /*
+     * turn off scale above - can now fit in 2 and a bit widths
+     */
+    av.setScaleAboveWrapped(false);
+    testee.calculateWrappedGeometry(canvasWidth, canvasHeight);
+    assertEquals(PA.getValue(testee, "wrappedVisibleWidths"), 3);
+  
+    /*
+     * reduce height to enough for 2 widths and not quite a third
+     * i.e. two repeating heights + spacer + sequence - 1 pixel
+     */
+    canvasHeight = charHeight * (16 * 2 + 2) + 2 * annotationHeight - 1;
+    testee.calculateWrappedGeometry(canvasWidth, canvasHeight);
+    assertEquals(PA.getValue(testee, "wrappedVisibleWidths"), 2);
+
+    /*
+     * add 1 pixel to height - should now get 3 widths drawn
+     */
+    canvasHeight += 1;
+    testee.calculateWrappedGeometry(canvasWidth, canvasHeight);
+    assertEquals(PA.getValue(testee, "wrappedVisibleWidths"), 3);
+  }
 }
-- 
1.7.10.2