diff options
Diffstat (limited to 'libjava/classpath/javax/swing/text/BoxView.java')
| -rw-r--r-- | libjava/classpath/javax/swing/text/BoxView.java | 264 |
1 files changed, 163 insertions, 101 deletions
diff --git a/libjava/classpath/javax/swing/text/BoxView.java b/libjava/classpath/javax/swing/text/BoxView.java index a184a81..27e3c0f 100644 --- a/libjava/classpath/javax/swing/text/BoxView.java +++ b/libjava/classpath/javax/swing/text/BoxView.java @@ -67,6 +67,11 @@ public class BoxView private boolean[] layoutValid = new boolean[2]; /** + * Indicates if the requirements for an axis are valid. + */ + private boolean[] requirementsValid = new boolean[2]; + + /** * The spans along the X_AXIS and Y_AXIS. */ private int[][] spans = new int[2][]; @@ -265,8 +270,10 @@ public class BoxView super.replace(offset, length, views); // Invalidate layout information. - layoutChanged(X_AXIS); - layoutChanged(Y_AXIS); + layoutValid[X_AXIS] = false; + requirementsValid[X_AXIS] = false; + layoutValid[Y_AXIS] = false; + requirementsValid[Y_AXIS] = false; } /** @@ -278,19 +285,26 @@ public class BoxView */ public void paint(Graphics g, Shape a) { - Rectangle inside = getInsideAllocation(a); - // TODO: Used for debugging. - //g.drawRect(inside.x, inside.y, inside.width, inside.height); + Rectangle alloc; + if (a instanceof Rectangle) + alloc = (Rectangle) a; + else + alloc = a.getBounds(); + + int x = alloc.x + getLeftInset(); + int y = alloc.y + getTopInset(); - Rectangle copy = new Rectangle(inside); + Rectangle clip = g.getClipBounds(); + Rectangle tmp = new Rectangle(); int count = getViewCount(); for (int i = 0; i < count; ++i) { - copy.setBounds(inside); - childAllocation(i, copy); - if (!copy.isEmpty() - && g.hitClip(copy.x, copy.y, copy.width, copy.height)) - paintChild(g, copy, i); + tmp.x = x + getOffset(X_AXIS, i); + tmp.y = y + getOffset(Y_AXIS, i); + tmp.width = getSpan(X_AXIS, i); + tmp.height = getSpan(Y_AXIS, i); + if (tmp.intersects(clip)) + paintChild(g, tmp, i); } } @@ -305,7 +319,13 @@ public class BoxView public float getPreferredSpan(int axis) { updateRequirements(axis); - return requirements[axis].preferred; + // Add margin. + float margin; + if (axis == X_AXIS) + margin = getLeftInset() + getRightInset(); + else + margin = getTopInset() + getBottomInset(); + return requirements[axis].preferred + margin; } /** @@ -319,12 +339,14 @@ public class BoxView */ public float getMaximumSpan(int axis) { - float max; - if (axis == myAxis) - max = getPreferredSpan(axis); + updateRequirements(axis); + // Add margin. + float margin; + if (axis == X_AXIS) + margin = getLeftInset() + getRightInset(); else - max = Integer.MAX_VALUE; - return max; + margin = getTopInset() + getBottomInset(); + return requirements[axis].maximum + margin; } /** @@ -341,7 +363,13 @@ public class BoxView public float getMinimumSpan(int axis) { updateRequirements(axis); - return requirements[axis].minimum; + // Add margin. + float margin; + if (axis == X_AXIS) + margin = getLeftInset() + getRightInset(); + else + margin = getTopInset() + getBottomInset(); + return requirements[axis].minimum + margin; } /** @@ -435,34 +463,29 @@ public class BoxView protected SizeRequirements calculateMajorAxisRequirements(int axis, SizeRequirements sr) { - updateChildRequirements(axis); + SizeRequirements res = sr; + if (res == null) + res = new SizeRequirements(); - SizeRequirements result = sr; - if (result == null) - result = new SizeRequirements(); + float min = 0; + float pref = 0; + float max = 0; - long minimum = 0; - long preferred = 0; - long maximum = 0; - for (int i = 0; i < children.length; i++) + int n = getViewCount(); + for (int i = 0; i < n; i++) { - minimum += childReqs[axis][i].minimum; - preferred += childReqs[axis][i].preferred; - maximum += childReqs[axis][i].maximum; + View child = getView(i); + min += child.getMinimumSpan(axis); + pref = child.getPreferredSpan(axis); + max = child.getMaximumSpan(axis); } - // Overflow check. - if (minimum > Integer.MAX_VALUE) - minimum = Integer.MAX_VALUE; - if (preferred > Integer.MAX_VALUE) - preferred = Integer.MAX_VALUE; - if (maximum > Integer.MAX_VALUE) - maximum = Integer.MAX_VALUE; - - result.minimum = (int) minimum; - result.preferred = (int) preferred; - result.maximum = (int) maximum; - result.alignment = 0.5F; - return result; + + res.minimum = (int) min; + res.preferred = (int) pref; + res.maximum = (int) max; + res.alignment = 0.5F; + + return res; } /** @@ -480,44 +503,24 @@ public class BoxView protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements sr) { - updateChildRequirements(axis); - SizeRequirements res = sr; if (res == null) res = new SizeRequirements(); - float minLeft = 0; - float minRight = 0; - float prefLeft = 0; - float prefRight = 0; - float maxLeft = 0; - float maxRight = 0; - for (int i = 0; i < childReqs[axis].length; i++) + res.minimum = 0; + res.preferred = 0; + res.maximum = 0; + res.alignment = 0.5F; + int n = getViewCount(); + for (int i = 0; i < n; i++) { - float myMinLeft = childReqs[axis][i].minimum * childReqs[axis][i].alignment; - float myMinRight = childReqs[axis][i].minimum - myMinLeft; - minLeft = Math.max(myMinLeft, minLeft); - minRight = Math.max(myMinRight, minRight); - float myPrefLeft = childReqs[axis][i].preferred * childReqs[axis][i].alignment; - float myPrefRight = childReqs[axis][i].preferred - myPrefLeft; - prefLeft = Math.max(myPrefLeft, prefLeft); - prefRight = Math.max(myPrefRight, prefRight); - float myMaxLeft = childReqs[axis][i].maximum * childReqs[axis][i].alignment; - float myMaxRight = childReqs[axis][i].maximum - myMaxLeft; - maxLeft = Math.max(myMaxLeft, maxLeft); - maxRight = Math.max(myMaxRight, maxRight); + View child = getView(i); + res.minimum = Math.max((int) child.getMinimumSpan(axis), res.minimum); + res.preferred = Math.max((int) child.getPreferredSpan(axis), + res.preferred); + res.maximum = Math.max((int) child.getMaximumSpan(axis), res.maximum); } - int minSize = (int) (minLeft + minRight); - int prefSize = (int) (prefLeft + prefRight); - int maxSize = (int) (maxLeft + maxRight); - float align = prefLeft / (prefRight + prefLeft); - if (Float.isNaN(align)) - align = 0; - res.alignment = align; - res.maximum = maxSize; - res.preferred = prefSize; - res.minimum = minSize; return res; } @@ -697,15 +700,62 @@ public class BoxView protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { - updateChildRequirements(axis); - updateRequirements(axis); + // Set the spans to the preferred sizes. Determine the space + // that we have to adjust the sizes afterwards. + long sumPref = 0; + int n = getViewCount(); + for (int i = 0; i < n; i++) + { + View child = getView(i); + spans[i] = (int) child.getPreferredSpan(axis); + sumPref = spans[i]; + } - // Calculate the spans and offsets using the SizeRequirements uility - // methods. - SizeRequirements.calculateTiledPositions(targetSpan, requirements[axis], - childReqs[axis], - offsets, spans); + // Try to adjust the spans so that we fill the targetSpan. + long diff = targetSpan - sumPref; + float factor = 0.0F; + int[] diffs = null; + if (diff != 0) + { + long total = 0; + diffs = new int[n]; + for (int i = 0; i < n; i++) + { + View child = getView(i); + int span; + if (diff < 0) + { + span = (int) child.getMinimumSpan(axis); + diffs[i] = spans[i] - span; + } + else + { + span = (int) child.getMaximumSpan(axis); + diffs[i] = span - spans[i]; + } + total += span; + } + float maxAdjust = Math.abs(total - sumPref); + factor = diff / maxAdjust; + factor = Math.min(factor, 1.0F); + factor = Math.max(factor, -1.0F); + } + + // Actually perform adjustments. + int totalOffs = 0; + for (int i = 0; i < n; i++) + { + offsets[i] = totalOffs; + if (diff != 0) + { + float adjust = factor * diffs[i]; + spans[i] += Math.round(adjust); + } + // Avoid overflow here. + totalOffs = (int) Math.min((long) totalOffs + (long) spans[i], + Integer.MAX_VALUE); + } } /** @@ -720,14 +770,26 @@ public class BoxView protected void layoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { - updateChildRequirements(axis); - updateRequirements(axis); - - // Calculate the spans and offsets using the SizeRequirements uility - // methods. - SizeRequirements.calculateAlignedPositions(targetSpan, requirements[axis], - childReqs[axis], offsets, - spans); + int count = getViewCount(); + for (int i = 0; i < count; i++) + { + View child = getView(i); + int max = (int) child.getMaximumSpan(axis); + if (max < targetSpan) + {System.err.println("align: " + child); + // Align child when it can't be made as wide as the target span. + float align = child.getAlignment(axis); + offsets[i] = (int) ((targetSpan - max) * align); + spans[i] = max; + } + else + { + // Expand child to target width if possible. + int min = (int) child.getMinimumSpan(axis); + offsets[i] = 0; + spans[i] = Math.max(min, targetSpan); + } + } } /** @@ -822,15 +884,8 @@ public class BoxView */ public float getAlignment(int axis) { - float align; - if (axis == myAxis) - align = 0.5F; - else - { - updateRequirements(axis); - align = requirements[axis].alignment; - } - return align; + updateRequirements(axis); + return requirements[axis].alignment; } /** @@ -843,9 +898,15 @@ public class BoxView public void preferenceChanged(View child, boolean width, boolean height) { if (width) - layoutValid[X_AXIS] = false; + { + layoutValid[X_AXIS] = false; + requirementsValid[X_AXIS] = false; + } if (height) - layoutValid[Y_AXIS] = false; + { + layoutValid[Y_AXIS] = false; + requirementsValid[Y_AXIS] = false; + } super.preferenceChanged(child, width, height); } @@ -862,7 +923,7 @@ public class BoxView if (! isAllocationValid()) { Rectangle bounds = a.getBounds(); - layout(bounds.width, bounds.height); + setSize(bounds.width, bounds.height); } return super.modelToView(pos, a, bias); } @@ -963,7 +1024,7 @@ public class BoxView */ private void updateRequirements(int axis) { - if (! layoutValid[axis]) + if (! requirementsValid[axis]) { if (axis == myAxis) requirements[axis] = calculateMajorAxisRequirements(axis, @@ -971,6 +1032,7 @@ public class BoxView else requirements[axis] = calculateMinorAxisRequirements(axis, requirements[axis]); + requirementsValid[axis] = true; } } } |