// Maximum Print Size Column
// (c) 2020 Steve Banham

// This is a script for Directory Opus.
// See https://www.gpsoft.com.au/DScripts/redirect.asp?page=scripts for development information.

// Called by Directory Opus to initialize the script
function OnInit(initData)
{
	initData.name = "Column: Max. Print Size";
	initData.version = "1.1";
	initData.copyright = "(c) 2020 Steve Banham";
	initData.url = "https://resource.dopus.com/t/column-maximum-print-size";
	initData.desc = "Adds a new column displaying maximum print size for an image.";
	initData.default_enable = true;
	initData.min_version = "12.0";
	
	initData.config_desc = DOpus.Create.Map();
	initData.config_groups = DOpus.Create.Map();
	var configName = "";
	
	configName = "DPI";
	initData.Config[configName] = "200";
	initData.config_desc(configName) = "DPI to use when calculating print size.";
	initData.config_groups(configName) = "Settings";
	
	configName = "Show DPI";
	initData.Config[configName] = true;
	initData.config_desc(configName) = "Include DPI setting in the column."
	initData.config_groups(configName) = "Settings";
	
	configName = "Show Units";
	initData.Config[configName] = true;
	initData.config_desc(configName) = "Include measurement unit in the column."
	initData.config_groups(configName) = "Settings";
	
	configName = "Centimetres";
	initData.Config[configName] = true;
	initData.config_desc(configName) = "Show the results in centimetres (true) or in inches (false).";
	initData.config_groups(configName) = "Settings";
	
	configName = "Directories";
	initData.Config[configName] = "<dir>";
	initData.config_desc(configName) = "The string used in the column for directories (can be blank).";
	initData.config_groups(configName) = "Non Image";
	
	configName = "Files";
	initData.Config[configName] = "---";
	initData.config_desc(configName) = "The string used in the column for files which aren't images (can be blank).";
	initData.config_groups(configName) = "Non Image";
	
	var col = initData.AddColumn();
	
    col.name = "MaxPrintSize";
    col.method = "OnMaxPrintSize";
    col.label = "Maximum Print Size";
    col.autogroup = true; 
    col.autorefresh = true;
    col.justify = "center";
    col.match.push_back("Yes");
}

function OnMaxPrintSize(scriptColData) {
	
	if (scriptColData.item.is_dir) {
		scriptColData.value = Script.Config["Directories"];
		return;
	}
	
	if (scriptColData.item.metadata() == "image") {	
		
		var prtMaxWidth = scriptColData.item.metadata.image_text.picwidth / Script.Config["DPI"]
		var prtMaxHeight = scriptColData.item.metadata.image_text.picheight / Script.Config["DPI"];
		
		if (Script.Config["Centimetres"] == true) {
			prtMaxWidth = prtMaxWidth * 2.54;
			prtMaxHeight = prtMaxHeight * 2.54;
		}
		
		prtMaxWidth = prtMaxWidth.toFixed(2);		
		prtMaxHeight = prtMaxHeight.toFixed(2);

		var strUnits = "cm";
		var strDPI = " (" + Script.Config["DPI"] + "dpi)";
		
		if (Script.Config["Show DPI"] == false) {
			var strDPI = "";
		}
			
		if (Script.Config["Centimetres"] == false) {
			strUnits = "\"";
		}
		
		if (Script.Config["Show Units"] == false) {
			strUnits = "";
		}
		
		scriptColData.value = prtMaxWidth + strUnits + " x " + prtMaxHeight + strUnits + strDPI;
	}
	else {
		scriptColData.value = Script.Config["Files"];
	}
}