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florea
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Timetable - draw items with different width
Feb 13th, 2017 at 1:01pm
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Hi,
I'm evaluating the scheduling product (Java Swing).
I want to build an scheduling calendar for a Day with some resources available for a specific time interval (so for 10-12 AM we might have 2 resource available, between 12-14 only one resource available, between 15-17 3 resource available etc), so the number of resources is not constant for the entire day. I'm thinking of using Timetable without Resource option, but instead of that drawing the items depending of how many resource I have available at a moment of time (for example if the calendar screen width is 600px, between 10-12 AM to draw an item with 300px, for appoiments that are planned between 12-14 to use the entire row 600px, between 15-17 to  draw an item on 200px). I want to keep the "free" space in order to see that I can use that time interval for another appoiment.
Do you know if it is possible to do something like that? (in the attached picture I want the "Free"/green appoiments not to be shown and of course to be resized based in the number of resources)
  
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Meppy
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Re: Timetable - draw items with different width
Reply #1 - Feb 13th, 2017 at 2:07pm
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Hi,

There is not an elegant way to achieve this. The closes solution I can think of, is creating a custom item viewer and restricting the rectangle where the item is drawn. Here is to implement the custom item viewer:

Code
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public static class MyAppViewer implements ItemViewer
{
	@Override
	public void draw(ItemDrawContext context)
	{
		Rectangle bounds = new Rectangle(context.getBounds());
		if (bounds.width > 300)
			bounds.width = 300;
		context.drawDefault(bounds);
	}
}

@ItemViewerAttribute(viewerType = MyAppViewer.class)
public static class MyApp extends Appointment
{
	public MyApp()
	{
	}
}

Instruct the calendar that the newly created items are of the new custom type:

Code
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calendar.setInteractiveItemType(MyApp.class);

However, this solution has various flaws. First, you need to manually calculate the width of each item based on how many resources are available in the item's time slot. Also, the resize bands of the item (when it is selected) cover the actual item size and not what is drawn through the viewer.

Regards,
Meppy
  
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florea
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Re: Timetable - draw items with different width
Reply #2 - Feb 13th, 2017 at 2:47pm
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Many thanks, from the visual point of view the code does what I need, but i cannot select the same time interval for creating another appoiment for exactly the same the same time interval, somehow the entire "row" is reserved for the old appoiment.
Do you think if there is other option? If I'm using the Resources in a Timetable view, is it possible to activate resources only for some time intervals?
  
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Meppy
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Re: Timetable - draw items with different width
Reply #3 - Feb 14th, 2017 at 2:21pm
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Hi,

We need to make modifications to the control in order to enable this functionality. We will see if we can implement this and I will get back to you.

Regards,
Meppy
  
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Re: Timetable - draw items with different width
Reply #4 - Feb 22nd, 2017 at 3:39pm
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Hi again,

We have difficulties implementing this specific scenario, because it is hard to decide what should happen when items of different sizes collide. A possible workaround might be to specify the maximum width for all items in the timetable by setting the Calendar.TimetableSettings.MaxItemSize property. For example:

Code
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calendar.getTimetableSettings().setMaxItemSize(100);

And then eventually use custom drawing to indicate the number of free slots in a specific time interval. Let me know if this solution is acceptable and I will implement the free slot indicator.

Regards,
Meppy
  
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florea
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Re: Timetable - draw items with different width
Reply #5 - Feb 28th, 2017 at 8:10am
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Hi,
  Thanks for your answer, I already used (for my POC) the workaround with setMaxItemSize. If you are doing anything with free slot indicator please let me know.

Best regards,
Bogdan
  
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Meppy
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Re: Timetable - draw items with different width
Reply #6 - Feb 28th, 2017 at 1:14pm
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Hi,

Check the attached sample (a modified version of the Zones sample). It illustrates how to implement time slots with available resources. When you create an item within a time slot the number to the left indicates the amount of occupied resources and the total number of resources.

Regards,
Meppy
  
MainWindow.txt ( 7 KB | 163 Downloads )
Preview.jpg ( 63 KB | 159 Downloads )
Preview.jpg
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