cairo-renderer: Update coding style and add comment explaining how to use the inter process communication to update the GUI with rendering status updates
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@ -275,12 +275,20 @@ static int cairo_renderer_render_cell_to_vector_file(GdsOutputRenderer *renderer
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goto ret_parent;
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}
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/* Close stdin and (stdout and stderr may live on) */
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/* We are now in a separate process just for rendering the output image.
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* You may print a log message to the activity bar of the gui by writing a line
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* teminated with '\n' to comm_pipe[1]. This will be handled by the parent process.
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* Directly calling the update function
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* gds_output_renderer_update_async_progress()
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* does not have any effect because this is a separate process.
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*/
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/*
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* Close stdin and (stdout and stderr may live on)
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*/
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close(0);
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//close(1);
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close(comm_pipe[0]);
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layers = (struct cairo_layer *)calloc(MAX_LAYERS, sizeof(struct cairo_layer));
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/* Clear layers */
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