[jfreechart-dev] [ jfreechart-Bugs-1277726 ] CategoryAxis Error

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Bugs item #1277726, was opened at 2005-08-31 20:23
Message generated for change (Settings changed) made by mungady
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Category: General
Group: None
Status: Open
Resolution: None
>Priority: 9
Submitted By: agustin_ane (agustin_ane)
>Assigned to: David Gilbert (mungady)
Summary: CategoryAxis Error

Initial Comment:
I found a bug in CategoryAxis

     When set CategoryLabelPositions a rotated angle,
CategoryAxis draw the labels smaller than the space
reserved, this is notorious if the label is long or
have a multiple lines.

    I found and fix this bag, fixed sources are attached. 

    I don't know if this is a better solution, but it's
works.

PD.
   Sorry , my english is too bad :(

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Comment By: Joubie (adriaanjoubert)
Date: 2006-05-24 11:19

Message:
Logged In: YES 
user_id=864842

The problem is due to the fact that in the initial call to
CategoryAxis.reserveSpace() the full plot area is used as
argument for the call to refreshTicks() to calculate the
space needed for the labels. When the labels are actually
written, the plotArea has had the space for the axis+labels
subtracted, so that the second calculation of the space for
the labels comes up with a much smaller value (stored in
state.max in the call to refreshTicks). My solution was to
add the dataArea as an argument to drawCategoryLabels, so
that the same height is calculated. This breaks the
description of how CategoryLabelPositions should work
(fraction of the plot area rather than the full data area).
See attached diff - needs changes to the 3D category axis
and SubCategoryAxis. Not pretty and probably not the
solution you want. Would be good if this could be fixed though!

Cheers,

Adriaan

*** CategoryAxis.java   2006-05-24 12:15:53.000000000 +0300
--- CategoryAxis.java-  2006-05-24 11:56:01.000000000 +0300
***************
*** 761,767 ****

          // draw the category labels and axis label
          AxisState state = new AxisState(cursor);
!         state = drawCategoryLabels(g2, plotArea, dataArea,
edge, state, plotSt ate);
          state = drawLabel(getLabel(), g2, plotArea,
dataArea, edge, state);

          return state;
--- 761,767 ----

          // draw the category labels and axis label
          AxisState state = new AxisState(cursor);
!         state = drawCategoryLabels(g2, dataArea, edge,
state, plotState);
          state = drawLabel(getLabel(), g2, plotArea,
dataArea, edge, state);

          return state;
***************
*** 782,788 ****
       * @return The updated axis state (never
<code>null</code>).
       */
      protected AxisState drawCategoryLabels(Graphics2D g2,
-                                            Rectangle2D
plotArea,
                                             Rectangle2D
dataArea,
                                             RectangleEdge edge,
                                             AxisState state,
--- 782,787 ----
***************
*** 793,799 ****
          }

          if (isTickLabelsVisible()) {
!             List ticks = refreshTicks(g2, state, plotArea,
edge);
              state.setTicks(ticks);

              int categoryIndex = 0;
--- 792,798 ----
          }

          if (isTickLabelsVisible()) {
!             List ticks = refreshTicks(g2, state, dataArea,
edge);
              state.setTicks(ticks);

              int categoryIndex = 0;




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