Now that we have a proper type column in the plot selection widget, the
internal type storing can be simplified.
If the plot has more than one Y selections for one X of label type (bar
charts) the first bar is opaque, but the additional are translucent in
order to be seen, since they will overlap.
What's This information added to explain all the possible selections for
plotting.
String type columns are now selectable as X axis. In that case a bar chart
is plotted where the column values are used as bar labels.
A new Axis Type column is added to the axis selection table, so the user
knows before-hand how the plot will be drawn.
Line type and point shape combo-boxes are not enabled for bar charts, since
they don't make sense.
Columns that make no sense for the Y axis as strings and date/times are not
selectable for that axis.
Warn user if not all data has been fetched and hint about the button for
loading all the data. The attention to this button is attracted changing
its background to a reddish colour and showing a warning in its tool-tip,
which is automatically shown for its default duration.
Default message is simplified and the button is only enabled when it is
useful (users of non-big databases would never be distracted about the
fetching mechanism).
Since this button is also useful for resetting the zoom and axis range,
it is also enabled if the user performs one of these interactions over the
plot.
See discussion at issue #838.
By selecting the axis or the labels associated to the axis,the user can
restrict the subsequent zoom or drag operation to that orientation.
The possible user interactions are documented in the Whats's This
information.
See issue #1258
The rectangle selection is no longer possible. Control+click can be used
for selecting a range of items.
This allows more freedom for performing customisations as requested in
issue "Change axis limits #838".
The "Load all data" button tool-tip and icon have been readjusted so they
hint the additional use pattern of resetting the plot to the original
zoom and range limits.
New and more appropriate icon for the "Save Plot" button. Icon from the
Silk set from famfamfam.com.
The Column Field is resized to the content.
The dummy column has been removed and the header no longer stretches the
last section property.
The table has alternating row colors for easy following of the field
checks.
The user is now able of selecting a range of contiguous points in any of
the graphs of the plot, through rectangle selection or click in single
point. This selection triggers automatically the selection of the
corresponding lines in the browsed table. In this way the user can analyse
the plot in detail.
Two other minor improvements: spelling error fixed and the dummy column in
the plot selection table has now transparent foreground (intends to avoid
wondering of the user about what functionality provides this column).
This cleans up the main window class a bit which was getting quite large
and a bit harder to maintain than necessary.
This commit also includes two minor fixes to the plot system:
- The plot widgets are now disabled when no database file is opened.
- The progress bar shown when fetching all data is now initialised with
the correct row numbers.
Other than that this commit should in theory not change any
functionality.
