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Bit Depth setting for Layout Export to PNG

sai_phaneendra

Hi,

I am using a similar snippet of code to export a layout to PNG format. https://github.com/Esri/arcgis-pro-sdk/wiki/ProSnippets-Layouts#export-a-map-frame-to-jpg.

When I export the layout to JPEG the bit depth is 24 with following setting

JPEGColorMode = JPEGColorMode.TwentyFourBitTrueColor

whereas when I export it to PNG with same setting(ColorMode instead of JPEGColorMode) would export an image with a bit depth '32'.

How can I export a layout to a 24 bit PNG ?

Thanks,
Sai

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Accepted answers

Wolf

Hi Sai,

I duplicated the problem with version 2.4 and 2.4.2. It looks like the bit depth is 32 instead of 24. I then tried the same Add-in with 2.5 and it worked as expected. So it appears that the problem has been fixed with 2.5.

All comments

sai_phaneendra

Thanks Wolfgang Kaiser‌ confirming.

Wolf

Hi Sai,

sai_phaneendra

Uma Harano‌ I have created a sample after setting up Pro 2.6 and it is working fine, whereas it cannot export a 24 bit PNG in Pro 2.4. In both the versions, JPEG export works fine. Is this a bug with Pro 2.4 ?

sai_phaneendra

Hi Uma,

Thanks for your response. I am using Pro 2.4 and after your response I modified the sample and tested it again and I still see the same issue.

Community sample used: arcgis-pro-sdk-community-samples/Layouts/LayoutMapSeries at master · Esri/arcgis-pro-sdk-community-samples · GitHub

Modified the below mentioned command to export PNG instead of PDF

<SPAN class="keyword token">public</SPAN> ICommand ExportMapSeriesItem
    <SPAN class="punctuation token">{</SPAN>
      <SPAN class="keyword token">get</SPAN>
      <SPAN class="punctuation token">{</SPAN>
        <SPAN class="keyword token">return</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">RelayCommand</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">async</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN>
        <SPAN class="punctuation token">{</SPAN>
          <SPAN class="keyword token">try</SPAN>
          <SPAN class="punctuation token">{</SPAN>
            <SPAN class="comment token">// Reference a layoutitem in a project by name</SPAN>
            LayoutProjectItem layoutItem <SPAN class="operator token">=</SPAN> Project<SPAN class="punctuation token">.</SPAN>Current<SPAN class="punctuation token">.</SPAN>GetItems<SPAN class="operator token"><</SPAN>LayoutProjectItem<SPAN class="operator token">></SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">FirstOrDefault</SPAN><SPAN class="punctuation token">(</SPAN>item <SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN> item<SPAN class="punctuation token">.</SPAN>Name<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Equals</SPAN><SPAN class="punctuation token">(</SPAN>SelectedMapSeriesItem<SPAN class="operator token">?</SPAN><SPAN class="punctuation token">.</SPAN>LayoutName<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
            <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>layoutItem <SPAN class="operator token">!=</SPAN> <SPAN class="keyword token">null</SPAN><SPAN class="punctuation token">)</SPAN>
            <SPAN class="punctuation token">{</SPAN>
              <SPAN class="comment token">// Create the log file and write the current Folder-Connection's to it</SPAN>
              SaveItemDialog saveDialog <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">SaveItemDialog</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
              saveDialog<SPAN class="punctuation token">.</SPAN>Title <SPAN class="operator token">=</SPAN> <SPAN class="string token">"Export the current selected map series item"</SPAN><SPAN class="punctuation token">;</SPAN>
              saveDialog<SPAN class="punctuation token">.</SPAN>OverwritePrompt <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">;</SPAN>
              saveDialog<SPAN class="punctuation token">.</SPAN>DefaultExt <SPAN class="operator token">=</SPAN> <SPAN class="string token">"png"</SPAN><SPAN class="punctuation token">;</SPAN>

              <SPAN class="comment token">// If the save dialog was not dismissed, create the file</SPAN>
              <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>saveDialog<SPAN class="punctuation token">.</SPAN><SPAN class="token function">ShowDialog</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">==</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">)</SPAN>
              <SPAN class="punctuation token">{</SPAN>
                <SPAN class="keyword token">await</SPAN> QueuedTask<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Run</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN>
                <SPAN class="punctuation token">{</SPAN>
                  Layout layout <SPAN class="operator token">=</SPAN> layoutItem<SPAN class="punctuation token">.</SPAN><SPAN class="token function">GetLayout</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
                  <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>layout <SPAN class="operator token">==</SPAN> <SPAN class="keyword token">null</SPAN><SPAN class="punctuation token">)</SPAN>
                    <SPAN class="keyword token">return</SPAN><SPAN class="punctuation token">;</SPAN>
                    <SPAN class="comment token">// Create PDF format with appropriate settings</SPAN>
                    PNGFormat png <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">PNGFormat</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
                    <SPAN class="punctuation token">{</SPAN>
                        Resolution <SPAN class="operator token">=</SPAN> <SPAN class="number token">300</SPAN><SPAN class="punctuation token">,</SPAN>
                        ColorMode <SPAN class="operator token">=</SPAN> ColorMode<SPAN class="punctuation token">.</SPAN>TwentyFourBitTrueColor<SPAN class="punctuation token">,</SPAN>
                        OutputFileName <SPAN class="operator token">=</SPAN> saveDialog<SPAN class="punctuation token">.</SPAN>FilePath
                    <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">;</SPAN>
                  <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>PDF<SPAN class="punctuation token">.</SPAN><SPAN class="token function">ValidateOutputFilePath</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>
                  <SPAN class="punctuation token">{</SPAN>
                    layout<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Export</SPAN><SPAN class="punctuation token">(</SPAN>png<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
                  <SPAN class="punctuation token">}</SPAN>
                <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

              <SPAN class="punctuation token">}</SPAN>
            <SPAN class="punctuation token">}</SPAN>
          <SPAN class="punctuation token">}</SPAN>
          <SPAN class="keyword token">catch</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="token class-name">Exception</SPAN> ex<SPAN class="punctuation token">)</SPAN>
          <SPAN class="punctuation token">{</SPAN>
            MessageBox<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Show</SPAN><SPAN class="punctuation token">(</SPAN>$<SPAN class="string token">@"Error in create layout: {ex}"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
          <SPAN class="punctuation token">}</SPAN>
        <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN> SelectedMapSeriesItem <SPAN class="operator token">!=</SPAN> <SPAN class="keyword token">null</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
      <SPAN class="punctuation token">}</SPAN>
    <SPAN class="punctuation token">}</SPAN>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Could you please check and let me know if this is an issue with Pro 2.4 maybe ?

Regards,
Sai

UmaHarano

I tested this in Pro 2.6. I don't see this issue. This is the code snippet I am using. (below). I checked the generated png in Visual Studio - it was 24 bit.

 QueuedTask<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Run</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN> <SPAN class="punctuation token">{</SPAN>
        <SPAN class="keyword token">var</SPAN> layout <SPAN class="operator token">=</SPAN> Project<SPAN class="punctuation token">.</SPAN>Current<SPAN class="punctuation token">.</SPAN>GetItems<SPAN class="operator token"><</SPAN>LayoutProjectItem<SPAN class="operator token">></SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">FirstOrDefault</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">GetLayout</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
        <SPAN class="comment token">//Export a map frame to JPG.</SPAN>

        PNGFormat png <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">PNGFormat</SPAN>
        <SPAN class="punctuation token">{</SPAN>
          HasWorldFile <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">,</SPAN>
          Resolution <SPAN class="operator token">=</SPAN> <SPAN class="number token">300</SPAN><SPAN class="punctuation token">,</SPAN>
          OutputFileName <SPAN class="operator token">=</SPAN> <SPAN class="string token">@"C:\temp\layout.png"</SPAN><SPAN class="punctuation token">,</SPAN>
          ColorMode <SPAN class="operator token">=</SPAN> ColorMode<SPAN class="punctuation token">.</SPAN>TwentyFourBitTrueColor<SPAN class="punctuation token">,</SPAN>
          Height <SPAN class="operator token">=</SPAN> <SPAN class="number token">800</SPAN><SPAN class="punctuation token">,</SPAN>
          Width <SPAN class="operator token">=</SPAN> <SPAN class="number token">1200</SPAN>
        <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">;</SPAN>

        <SPAN class="comment token">//Reference the map frame</SPAN>
        <SPAN class="comment token">//MapFrame mf = layout.FindElement("MyMapFrame") as MapFrame;</SPAN>

        <SPAN class="comment token">//Export on the worker thread</SPAN>

        <SPAN class="comment token">//Check to see if the path is valid and export</SPAN>
        <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>png<SPAN class="punctuation token">.</SPAN><SPAN class="token function">ValidateOutputFilePath</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>
        <SPAN class="punctuation token">{</SPAN>
          layout<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Export</SPAN><SPAN class="punctuation token">(</SPAN>png<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>  <SPAN class="comment token">//Export the map frame to JPG</SPAN>
        <SPAN class="punctuation token">}</SPAN>

      <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

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