ScrollPager doesn't respect the margin of customaxis

[Christopher]

Hello!

Tchart still is having problmes to set well the margin with scrollpager and custom axis. You can reproduce it with the example I sent in the previous post.

Try:

Code: Select all

            private void button2_Click(object sender, EventArgs e)
            {
              tChart1.GetAxesChartRect += tChart1_GetAxesChartRect;
              AddCustomAxis();
            }

            void tChart1_GetAxesChartRect(object sender, Steema.TeeChart.GetAxesChartRectEventArgs e)
            {
              if (tChart1.Series[0].CustomVertAxis != null)
              {
                double maxVal = tChart1.Series[0].YValues.Maximum;
                float twidth = tChart1.Graphics3D.TextWidth(maxVal.ToString(tChart1.Series[0].CustomVertAxis.Labels.ValueFormat));

                int width = Steema.TeeChart.Utils.Round(twidth) + 30;

                Rectangle rect = tChart1.Chart.ChartRect;
                rect.X = width;
                rect.Width = tChart1.Width - 80;
                e.AxesChartRect = rect;
              }
            }

[acastro]

It doesn't run the chart and the scrollpager are one over the other...

[Christopher]

It doesn't run the chart and the scrollpager are one over the other...

Here is your modified project which includes this code, and here is a video of it working correctly with the latest publicly available release of TeeChart.dll.

[acastro]

Thanks now it seems to run was confused between GetAxesChartRect functions of the chart and the subcharts...

[acastro]

I follow with some problems in the same topic.

Please find an example project to reproduce.
http://193.145.251.126/pnp/files/TnROgF ... leZoom.zip

If you press button1 to configure the chart. Button2 to save the chart, and button 3 to open the save chart the margin in the scrollpager is changed.

And if you reopen the application and press button3 to open the saved chart the margin of the main chart is also changed.

[Narcís]

Hello wakeup,

That's because when exporting/importing a chart, associated events are not being exported. The reason behind that is that you could load that chart in an application where those events doesn't exist, which would cause an error loading the chart. Having that in mind, you should add the event handlers again. So you should only modify button3_Click code in your project to look like this:

Code: Select all

        private void button3_Click(object sender, EventArgs e)
        {
          chart.Import.Template.Load(@"C:\testzoom.ten");//
          chart.GetAxesChartRect +=chart_GetAxesChartRect;
          Steema.TeeChart.Tools.ScrollPager mt = (Steema.TeeChart.Tools.ScrollPager)chart.Tools[0];
          mt.SubChartTChart.GetAxesChartRect += SubChartTChart_GetAxesChartRect;
          addPagescroller(mt);
        }

[acastro]

Thanks I understand your point, but anyway, if that events sets some properties to the chart, why that property values are not saved and then loaded when opened?

[Narcís]

Hi wakeup,

Those are properties that are calculated dynamically depending from other chart properties, which are only valid after the chart has been painted. Hence them being set with the event handlers. Those values (axis.posAxis, axis.Labels.position and axis.posTitle in Steema.TeeChart.Chart.ReCalcAxisElements) could probably be serialized, which might be good for your particular case, however this wouldn't work importing the .ten file into another chart as the values would need to be recalculated again. Moreover, setting custom AxesChartRect is an advanced chart customisation that it wouldn't be desirable in most importing circumstances and could lead to really unpredictable and weird charts.

[acastro]

Ok thanks. I have another related question.

In order to get the width of the labels we do this?

Code: Select all

                  double maxVal = chart.Series[current].CustomVertAxis.Maximum;

          float twidth = chart.Graphics3D.TextWidth(maxVal.ToString(chart.Series[current].CustomVertAxis.Labels.ValueFormat));

But by example when maxval is 94.33, and the diference between the minimum of the scale and the maximum is big the label doesn’t show decimals, so the label only shows 94. So the twidth is not right because “ValueFormat” says "#,##0.###". But I cannot change the valueformat because it is interesting to show decimals if the scale is short.

How can I know if the scale is showing thee maximum with or without decimals?

[Narcís]

Hi wakeup,

I'm not sure about what you are trying to achieve here.

But I cannot change the valueformat because it is interesting to show decimals if the scale is short.

Why not? You can force having decimal values changing "#" to "0" as explained in Custom Numeric Format Strings.

How can I know if the scale is showing thee maximum with or without decimals?

You can check it in the GetAxisLabels event, for example:

Code: Select all

        private bool maxHasDecimals = false;
        private double max;

        void chart_GetAxisLabel(object sender, Steema.TeeChart.GetAxisLabelEventArgs e)
        {
          if (((Steema.TeeChart.Axis)sender).IsCustom())
          {
            double tmpMax;
            bool tmp = false;

            if (double.TryParse(e.LabelText, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out tmpMax))
            {
              tmp = (tmpMax % Math.Truncate(tmpMax) > 0.0);
            }

            if (tmpMax > max)
            {
              max = tmpMax;
              maxHasDecimals = tmp;
            }
          }
        }

[acastro]

Hi wakeup,

I'm not sure about what you are trying to achieve here.

But I cannot change the valueformat because it is interesting to show decimals if the scale is short.

Why not? You can force having decimal values changing "#" to "0" as explained in Custom Numeric Format Strings.

I can't because if the values by example are between 0 an 1, I like to see the decimals... if they are between 0 and 90 no.

How can I know if the scale is showing thee maximum with or without decimals?

You can check it in the GetAxisLabels event, for example:

Code: Select all

        private bool maxHasDecimals = false;
        private double max;

        void chart_GetAxisLabel(object sender, Steema.TeeChart.GetAxisLabelEventArgs e)
        {
          if (((Steema.TeeChart.Axis)sender).IsCustom())
          {
            double tmpMax;
            bool tmp = false;

            if (double.TryParse(e.LabelText, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out tmpMax))
            {
              tmp = (tmpMax % Math.Truncate(tmpMax) > 0.0);
            }

            if (tmpMax > max)
            {
              max = tmpMax;
              maxHasDecimals = tmp;
            }
          }
        }

It doesn't run, I tried and I got
maxHasDecimals = true
max = 94.832
but in the labels the maximum value you can see is 90. Without decimals...
Thanks

[Narcís]

Hello wakeup,

I can't because if the values by example are between 0 an 1, I like to see the decimals... if they are between 0 and 90 no.

Ok, in that case you should manually parse e.LabelText argument in the GetAxisLabel event, for example:

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        void chart_GetAxisLabel(object sender, Steema.TeeChart.GetAxisLabelEventArgs e)
        {
          if (((Steema.TeeChart.Axis)sender).IsCustom())
          {
            double tmp = Convert.ToDouble(e.LabelText);
            e.LabelText = (tmp < 1) ? tmp.ToString("#.##"): tmp.ToString("#.00");
          }
        }

[acastro]

I think you did't undestand me. When I said " between 0 an 1, I like to see the decimals... if they are between 0 and 90 no." it was only and example, the same is if its between 4 and five.... This behaviour is what teechart does automatically. The labels are right, the question is how to acces to the real labels proglamatically... In your example they were with decimals and the real labels although the real labels weren't with decimals...

Thanks

[Narcís]

I think you did't undestand me. When I said " between 0 an 1, I like to see the decimals... if they are between 0 and 90 no."

Ok, I think I understood you now. In that case you could add something like the code below at the end of button1_Click method in your project.

Code: Select all

          chart.Draw();

          for (int i = 0; i < chart.Axes.Custom.Count; i++)
          {
            Steema.TeeChart.Axis a = chart.Axes.Custom[i];
            double range = a.Maximum - a.Minimum;

            a.Labels.ValueFormat = (range < 1) ? "#.00" : "#.##";
          }

it was only and example, the same is if its between 4 and five.... This behaviour is what teechart does automatically. The labels are right, the question is how to acces to the real labels proglamatically... In your example they were with decimals and the real labels although the real labels weren't with decimals...

Ok. You should get the labels using the GetAxisLabels and GetNextAxisLabel. You'll find more information about those events in tutorial 4, at the "Axis events" section. Tutorials can be found at TeeChart's program group.

[acastro]

I think you did't undestand me. When I said " between 0 an 1, I like to see the decimals... if they are between 0 and 90 no."

Ok, I think I understood you now. In that case you could add something like the code below at the end of button1_Click method in your project.

Code: Select all

          chart.Draw();

          for (int i = 0; i < chart.Axes.Custom.Count; i++)
          {
            Steema.TeeChart.Axis a = chart.Axes.Custom[i];
            double range = a.Maximum - a.Minimum;

            a.Labels.ValueFormat = (range < 1) ? "#.00" : "#.##";
          }

Thanks but I don't need this, this is for changing the lables and the labels are right in my graph automatically. That's not the problem

it was only and example, the same is if its between 4 and five.... This behaviour is what teechart does automatically. The labels are right, the question is how to acces to the real labels proglamatically... In your example they were with decimals and the real labels although the real labels weren't with decimals...

Ok. You should get the labels using the GetAxisLabels and GetNextAxisLabel. You'll find more information about those events in tutorial 4, at the "Axis events" section. Tutorials can be found at TeeChart's program group.

I have seen the tutorial, but it is not usefully because e.LabelText and e.LabelValue are not the labels shown in my chart, they are with decimals although the labels in my chart are without decimals.