Set limit range for zoom, scroll, and adjust operations

[QuocDoBV]

Set limit range for zoom, scroll, and adjust operations

• Added a method setLimitRange to define minimum and maximum range boundaries for dynamic axis operations.
• Enforced these limits in zoomIn, zoomOut, scrollUp, scrollDown, and adjustRange to ensure axis values stay within the specified range.
• Updated logic in these methods to respect minRange and maxRange.
• Added checks to prevent invalid configurations for minRange and maxRange.

This change does not affect manual range updates via setRange to provide flexibility for custom settings.

[eselmeister]

@QuocDoBV Please adjust the year in the header. If it was 2023 before, then modify to 2023, 2024.

[eselmeister]

Your approach allows to specify a range manually. That's also a way to select a range of display.
Did you try to use the RangeRestriction option?

IChartSettings chartSettings = chart.getChartSettings();
RangeRestriction rangeRestriction = chartSettings.getRangeRestriction();
rangeRestriction.setRestrictZoomX(true);
rangeRestriction.setRestrictZoomY(true);
chart.applySettings(chartSettings);

[QuocDoBV]

Your approach allows to specify a range manually. That's also a way to select a range of display. Did you try to use the RangeRestriction option?

IChartSettings chartSettings = chart.getChartSettings();
RangeRestriction rangeRestriction = chartSettings.getRangeRestriction();
rangeRestriction.setRestrictZoomX(true);
rangeRestriction.setRestrictZoomY(true);
chart.applySettings(chartSettings);

I am using InteractiveChart. Does it suport RangeRestriction? I checked and saw that InteractiveChart does not support RangeRestriction. Could you please confirm? Thank you.

[eselmeister]

The RangeRestriction is available via the extensions.

[QuocDoBV]

The RangeRestriction is available via the extensions.

We are building a view that is using InteractiveChart for plot data. We would like to limit zoom, scroll, adjust in specified range. But InteractiveChart does not support a RangeRestriction. It is the reason why I want to make these changes. Our application is using InteractiveChart for plotting data. Because there are a set different between InteractiveChart and chart extensions(line chart is simiar to Interactive chart for plotting line series) such as context menu item, slider, etc,... Therefore I still want to use InteractiveChart instead of an extension.

[eselmeister]

When using org.eclipse.swtchart.extensions.core.ScrollableChart or specific version of it, you can define the menu exactly as you want and replace the existing menu content by your specific entries.

[QuocDoBV]

When using org.eclipse.swtchart.extensions.core.ScrollableChart or specific version of it, you can define the menu exactly as you want and replace the existing menu content by your specific entries.

Thank you for your suggestion.
We need to plot a lot of data points, could be more than 1 million data therefore we concern about the performance of the library.
Could you please tell me that there any different about performance between InteractiveChart and ScrollableChart?

[eselmeister]

@QuocDoBV Have a look at the demo chart I just have pushed.

[eselmeister]

@QuocDoBV Did you try it with the above example?

[QuocDoBV]

@QuocDoBV Did you try it with the above example?

I have just run your example. It looks great. I will continue checking the compatibility of the ScrollableChart extension with my project tomorrow. Thank you so much for your suggestion.

[eselmeister]

Lovely to hear. Additionally, your PR could be used in a case, where chart zooming shall be constrained to a defined range. If you'd like to, please update the header accordingly. I would then merge the change and adjust it slightly to the ChartSettings approach.

[QuocDoBV]

Lovely to hear. Additionally, your PR could be used in a case, where chart zooming shall be constrained to a defined range. If you'd like to, please update the header accordingly. I would then merge the change and adjust it slightly to the ChartSettings approach.

I have just updated the header file as your request.

[QuocDoBV]

Hi @eselmeister,
There is an issue with LineChart extension that I have just found when the chart display data had the same values. The slider will work wrongly as below image. The chart ranges do not update when moving slider in both X and Y axis.
The source to create a chart with points having the same Y values.
ChartView.zip

[eselmeister]

@QuocDoBV Please move the above mentioned issue to a separate issue. I will do a review.

[QuocDoBV]

@QuocDoBV Please move the above mentioned issue to a separate issue. I will do a review.

I have raised #429

[eselmeister]

@QuocDoBV The PR looks good, but the copyright header was updated in a wrong way. You need to fix it. The first year marks the year the file has been created. The second year the year the file has been updated recently. In this case, you replaced 2008 by 2023. The correct header is:

Copyright (c) 2008, 2024 SWTChart project.

Please adjust the header.

[QuocDoBV]

@QuocDoBV The PR looks good, but the copyright header was updated in a wrong way. You need to fix it. The first year marks the year the file has been created. The second year the year the file has been updated recently. In this case, you replaced 2008 by 2023. The correct header is:

Copyright (c) 2008, 2024 SWTChart project.

Please adjust the header.

Thank for your explanation!
I have updated the header.