public void OrderedBoxes()
{
var styles = new AssembledStyles();
// Nothing is reversed when everything is at level 0.
var line = new ParaLine();
line.Add(MakeStringBox(styles, 0, false));
line.Add(MakeStringBox(styles, 0, false));
line.Add(MakeStringBox(styles, 0, false));
var boxes = new List<Box>(line.OrderedBoxes(0));
VerifyBoxOrder(line, boxes, new[] { 0, 1, 2 });
// Also, three adjacent LTRs in an RTL paragraph are not reversed.
boxes = new List<Box>(line.OrderedBoxes(1));
VerifyBoxOrder(line, boxes, new[] { 0, 1, 2 });
// Everything is reversed when everything is at level 1 (ordinary RTL text).
line = new ParaLine();
line.Add(MakeStringBox(styles, 1, false));
line.Add(MakeStringBox(styles, 1, false));
line.Add(MakeStringBox(styles, 1, false));
boxes = new List<Box>(line.OrderedBoxes(0));
VerifyBoxOrder(line, boxes, new[] { 2, 1, 0 });
// Also, three adjacent RTL boxes in an LTR paragraph are reversed.
boxes = new List<Box>(line.OrderedBoxes(1));
VerifyBoxOrder(line, boxes, new[] { 2, 1, 0 });
// In an RTL paragraph with two adjacent upstream boxes, they preserve their order.
line = new ParaLine();
line.Add(MakeStringBox(styles, 1, false));
line.Add(MakeStringBox(styles, 2, false));
line.Add(MakeStringBox(styles, 2, false));
line.Add(MakeStringBox(styles, 1, false));
boxes = new List<Box>(line.OrderedBoxes(0));
VerifyBoxOrder(line, boxes, new[] { 3, 1, 2, 0 });
// In an RTL paragraph with two adjacent upstream boxes, where one is weak, it goes downstream.
line = new ParaLine();
line.Add(MakeStringBox(styles, 1, false));
line.Add(MakeStringBox(styles, 2, false));
line.Add(MakeStringBox(styles, 2, true));
line.Add(MakeStringBox(styles, 1, false));
boxes = new List<Box>(line.OrderedBoxes(0));
VerifyBoxOrder(line, boxes, new[] { 3, 2, 1, 0 });
// In an RTL paragraph with three adjacent upstream boxes, where the middle one is weak, it goes upstream.
line = new ParaLine();
line.Add(MakeStringBox(styles, 1, false));
line.Add(MakeStringBox(styles, 2, false));
line.Add(MakeStringBox(styles, 2, true));
line.Add(MakeStringBox(styles, 2, false));
line.Add(MakeStringBox(styles, 1, false));
boxes = new List<Box>(line.OrderedBoxes(0));
VerifyBoxOrder(line, boxes, new[] { 4, 1, 2, 3, 0 });
}
public void ReverseUpstreamBoxes()
{
var line = new ParaLine();
var styles = new AssembledStyles();
// no boxes (pathological)
line.ReverseUpstreamBoxes(0, new List<Box>(), 0);
// one box
line = new ParaLine();
line.Add(MakeStringBox(styles, 3, false));
var boxes = new List<Box>(line.Boxes);
line.ReverseUpstreamBoxes(0, boxes, 0);
VerifyBoxOrder(line, boxes, new [] {0});
// two boxes: should re-order only if depth is small enough.
line = new ParaLine();
line.Add(MakeStringBox(styles, 2, false));
line.Add(MakeStringBox(styles, 1, false));
boxes = new List<Box>(line.Boxes);
line.ReverseUpstreamBoxes(3, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 0, 1 }); // not re-ordered, all depths too small
line.ReverseUpstreamBoxes(2, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 0, 1 }); // not re-ordered, just one that could be
line.ReverseUpstreamBoxes(1, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 1, 0 }); // re-ordered, all <= depth
line.ReverseUpstreamBoxes(0, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 0, 1 }); // re-ordered again, all < depth
// quite a mixture!
line = new ParaLine();
MockDirectionSegment.NextIndex = 0;
line.Add(MakeStringBox(styles, 2, false));
line.Add(MakeStringBox(styles, 3, false));
line.Add(MakeStringBox(styles, 1, false));
line.Add(MakeStringBox(styles, 2, false));
line.Add(MakeStringBox(styles, 4, false));
line.Add(MakeStringBox(styles, 4, false));
line.Add(MakeStringBox(styles, 4, false));
line.Add(MakeStringBox(styles, 4, false));
line.Add(MakeStringBox(styles, 3, false));
line.Add(MakeStringBox(styles, 4, false));
line.Add(MakeStringBox(styles, 5, false));
line.Add(MakeStringBox(styles, 5, false));
boxes = new List<Box>(line.Boxes);
line.ReverseUpstreamBoxes(0, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 11,10,9,8,7,6,5,4,3,2,1,0 }); // reverse everything
line.ReverseUpstreamBoxes(1, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 0,1,2,3,4,5,6,7,8,9,10,11 }); // back again
// now the level 1 box at index 2 does not move
line.ReverseUpstreamBoxes(2, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 1, 0, 2, 11, 10, 9, 8, 7, 6, 5, 4, 3 });
line.ReverseUpstreamBoxes(2, boxes, 0); // put them back!
VerifyBoxOrder(line, boxes, new[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }); // back again
line.ReverseUpstreamBoxes(4, boxes, 0); // only the groups with more 4 or more reverse
VerifyBoxOrder(line, boxes, new[] { 0, 1, 2, 3, 7, 6, 5, 4, 8, 11, 10, 9 }); // back again
boxes = new List<Box>(line.Boxes);
line.ReverseUpstreamBoxes(1, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 });
line.ReverseUpstreamBoxes(2, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 3, 4, 5, 6, 7, 8, 9, 10, 11, 2, 0, 1 });
line.ReverseUpstreamBoxes(3, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 3, 11, 10, 9, 8, 7, 6, 5, 4, 2, 0, 1 });
line.ReverseUpstreamBoxes(4, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 3, 9, 10, 11, 8, 4, 5, 6, 7, 2, 0, 1 });
line.ReverseUpstreamBoxes(5, boxes, 0);
VerifyBoxOrder(line, boxes, new[] { 3, 9, 11, 10, 8, 4, 5, 6, 7, 2, 0, 1 });
boxes = new List<Box>(line.OrderedBoxes(0));
// This should do all in one step the reversals indicated in the previous test
// sequence. The results above indicate how the final sequence is arrived at.
VerifyBoxOrder(line, boxes, new[] { 3, 9, 11, 10, 8, 4, 5, 6, 7, 2, 0, 1 });
line = new ParaLine();
line.Add(new BlockBox(styles, Color.Red, 200, 300));
line.Add(MakeStringBox(styles, 2, true));
line.Add(MakeStringBox(styles, 2, true));
line.Add(new BlockBox(styles, Color.Red, 200, 300));
boxes = new List<Box>(line.Boxes);
line.ReverseUpstreamBoxes(2, boxes, 1);
VerifyBoxOrder(line, boxes, new[] { 0, 2, 1, 3}); // reverse just the string boxes
}
public void ArrangeBoxes()
{
var styles = new AssembledStyles();
// Ordinary layout
var line = new ParaLine();
line.Add(MakeStringBox(styles, 0, false));
var box2 = MakeStringBox(styles, 0, false);
line.Add(box2);
line.Add(MakeStringBox(styles, 0, false));
((MockDirectionSegment) box2.Segment).SimulatedWidth = 20;
var layoutInfo = MakeLayoutInfo();
foreach (var box in line.Boxes)
box.Layout(layoutInfo);
line.ArrangeBoxes(FwTextAlign.ktalLeft, 7, 0, 0, 100, 0);
Assert.That(line.Boxes.First().Left, Is.EqualTo(7));
Assert.That(line.Boxes.Skip(1).First().Left, Is.EqualTo(17)); // past first default(10)-width box
Assert.That(line.Boxes.Skip(2).First().Left, Is.EqualTo(37)); // past second, 20-pixel box.
// Still LTR, but aligned right
line.ArrangeBoxes(FwTextAlign.ktalRight, 7, 3, 10, 100, 0);
Assert.That(line.Boxes.Skip(2).First().Left, Is.EqualTo(100 - 3 - 10)); // from maxwidth, minus gapright, minus 10 pix width.
Assert.That(line.Boxes.Skip(1).First().Left, Is.EqualTo(100 - 3 - 10 - 20)); // further left by 20 pix width of middle default-width box
Assert.That(line.Boxes.First().Left, Is.EqualTo(100 -3 - 10 - 20 - 10)); // still further by 10 pix width of first box
// Still LTR, but aligned center
line.ArrangeBoxes(FwTextAlign.ktalCenter, 7, 3, 10, 100, 0);
int sumBoxWidth = 40;
int available = 100 - 7 - 3 - 10; // the width in which we can center
int start = 7 + 10 + (available - sumBoxWidth)/2;
Assert.That(line.Boxes.First().Left, Is.EqualTo(start));
Assert.That(line.Boxes.Skip(1).First().Left, Is.EqualTo(start + 10)); // past first default(10)-width box
Assert.That(line.Boxes.Skip(2).First().Left, Is.EqualTo(start + 30)); // past second, 20-pixel box.
// Enhance: add test for justified.
// Now simulate RTL paragraph with similar contents. Boxes are in opposite order.
line = new ParaLine();
line.Add(MakeStringBox(styles, 1, false));
box2 = MakeStringBox(styles, 1, false);
line.Add(box2);
line.Add(MakeStringBox(styles, 1, false));
((MockDirectionSegment)box2.Segment).SimulatedWidth = 30;
foreach (var box in line.Boxes)
box.Layout(layoutInfo);
line.ArrangeBoxes(FwTextAlign.ktalLeft, 7, 0, 0, 100, 1);
Assert.That(line.Boxes.Skip(2).First().Left, Is.EqualTo(7)); // last box is now leftmost.
Assert.That(line.Boxes.Skip(1).First().Left, Is.EqualTo(17)); // second is left of first by width of first
Assert.That(line.Boxes.First().Left, Is.EqualTo(47)); // first is now on the right.
// Verify that it works correctly for align right (obey firstLineIndent!) and center.
line.ArrangeBoxes(FwTextAlign.ktalRight, 7, 3, 15, 100, 1);
var rightOfFirstBox = 100 - 3 - 15;
Assert.That(line.Boxes.First().Right, Is.EqualTo(rightOfFirstBox));
Assert.That(line.Boxes.Skip(1).First().Right, Is.EqualTo(rightOfFirstBox - 10)); // past first default-width box
Assert.That(line.Boxes.Skip(2).First().Right, Is.EqualTo(rightOfFirstBox - 10 - 30)); // past second, 30-pixel box.
}
public void SetWeakDirections()
{
var line = new ParaLine();
var styles = new AssembledStyles();
// no boxes (pathological)
line.SetWeakDirections(0);
// no weak boxes
line = new ParaLine();
line.Add(MakeStringBox(styles, 3, false));
line.SetWeakDirections(0);
VerifyDepth(line, 0, 3);
// one weak box alone: no change
line = new ParaLine();
line.Add(MakeStringBox(styles, 3, true));
line.SetWeakDirections(1);
VerifyDepth(line, 0, 1);
// one at start, followed by a non-weak
line = new ParaLine();
line.Add(MakeStringBox(styles, 2, true));
line.Add(MakeStringBox(styles, 1, false));
line.SetWeakDirections(0);
VerifyDepth(line, 0, 0); // adjacent to paragraph boundary, topDepth wins
line.SetWeakDirections(2);
VerifyDepth(line, 0, 1); // adjacent box has lower depth.
// two at start, followed by non-weak; also two at end and four in middle.
line = new ParaLine();
line.Add(MakeStringBox(styles, 2, true));
line.Add(MakeStringBox(styles, 3, true));
line.Add(MakeStringBox(styles, 1, false));
line.Add(MakeStringBox(styles, 2, false));
line.Add(MakeStringBox(styles, 4, true));
line.Add(MakeStringBox(styles, 4, true));
line.Add(MakeStringBox(styles, 4, true));
line.Add(MakeStringBox(styles, 4, true));
line.Add(MakeStringBox(styles, 3, false));
line.Add(MakeStringBox(styles, 4, false));
line.Add(MakeStringBox(styles, 5, true));
line.Add(MakeStringBox(styles, 5, true));
line.SetWeakDirections(6); // let the adjacent boxes rather than the paragraph depth win.
VerifyDepth(line, 0, 1); // first two set to depth of following box
VerifyDepth(line, 1, 1);
VerifyDepth(line, 4, 2); // middle four set to depth of preceding box
VerifyDepth(line, 5, 2);
VerifyDepth(line, 6, 2);
VerifyDepth(line, 7, 2);
VerifyDepth(line, 10, 4); // last two set to depth of preceding
VerifyDepth(line, 11, 4);
line.SetWeakDirections(0); // let the adjacent boxes rather than the paragraph depth win.
VerifyDepth(line, 0, 0); // topdepth from para boundary
VerifyDepth(line, 1, 0);
VerifyDepth(line, 4, 2); // middle four set to depth of preceding box
VerifyDepth(line, 5, 2);
VerifyDepth(line, 6, 2);
VerifyDepth(line, 7, 2);
VerifyDepth(line, 10, 0); // topdepth from para boundary
VerifyDepth(line, 11, 0);
line= new ParaLine();
line.Add(MakeStringBox(styles, 2, false));
line.Add(MakeStringBox(styles, 3, true));
line.Add(new BlockBox(styles, Color.Red, 200, 300));
line.SetWeakDirections(1); // The block box is considered to have depth 1 and wins
VerifyDepth(line, 1, 1);
}
private void AddBoxToLine(Box boxToAdd, LgEndSegmentType est)
{
m_currentLine.Add(boxToAdd);
m_lineSegTypes.Add(est);
}