Add dfl.chart.LineGraphRenderer

Update TableRenderer

README.md

@@ -5,10 +5,10 @@ DFL is a Win32 windowing library for the D language.
 
 ## Recent major features
 - **Module "dfl.chart" is now comming.**
-  - **TableRenderer (with example)**
+  - TableRenderer (with example)
-  - ~LineGraphRenderer~
+  - **LineGraphRenderer (with example)**
   - ~TimeChartRenderer~
-- **Add simple clock "Dclock" as an example of DFL application.**
+- Add simple clock "Dclock" as an example of DFL application.
 - Module "dfl.printing" is now comming.
   - PrintDialog
   - PrintSetupDialog
@@ -40,6 +40,7 @@ DFL is a Win32 windowing library for the D language.
 ![screen shot](./examples/richtextbox/image/screenshot.png "screen shot")
 ![screen shot](./examples/dclock/image/screenshot.png "screen shot")
 ![screen shot](./examples/tablerenderer/image/screenshot.png "screen shot")
+![screen shot](./examples/linegraphrenderer/image/screenshot.png "screen shot")
 
 ## Build and Install (dfl.lib and dfl_debug.lib)
 ### 1. Set environment variables

examples/linegraphrenderer/.gitignore

@@ -0,0 +1,16 @@
+.dub
+docs.json
+__dummy.html
+docs/
+/hello_dfl
+hello_dfl.so
+hello_dfl.dylib
+hello_dfl.dll
+hello_dfl.a
+hello_dfl.lib
+hello_dfl-test-*
+*.exe
+*.pdb
+*.o
+*.obj
+*.lst

examples/linegraphrenderer/.vscode/launch.json

@@ -0,0 +1,13 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "C++ Launch (Windows) linegraphrenderer",
+            "type": "cppvsdbg",
+            "request": "launch",
+            "cwd": "${workspaceRoot}",
+            "program": "./bin/linegraphrenderer.exe",
+            "console": "internalConsole"
+        }
+    ]
+}

examples/linegraphrenderer/.vscode/tasks.json

@@ -0,0 +1,20 @@
+{
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"type": "dub",
+			"run": false,
+			"cwd": ".",
+			"compiler": "$current",
+			"archType": "$current",
+			"buildType": "$current",
+			"configuration": "$current",
+			"problemMatcher": [
+				"$dmd"
+			],
+			"group": "build",
+			"label": "dub: Build linegraphrenderer_sample",
+			"detail": "dub build --compiler=dmd.EXE -a=x86_64 -b=debug -c=application"
+		}
+	]
+}

examples/linegraphrenderer/README.md

@@ -0,0 +1,2 @@
+# Screen Shot
+![screen shot](./image/screenshot.png "screen shot")

examples/linegraphrenderer/dub.json

@@ -0,0 +1,16 @@
+{
+	"authors": ["haru-s"],
+	"copyright": "Copyright (C) 2024 haru-s",
+	"description": "DFL sample code.",
+	"name": "linegraphrenderer",
+	"targetType": "executable",
+	"targetPath": "bin",
+	"dependencies": {
+		"dfl": {
+			"path": "../../../dfl"
+		}
+	},
+	"lflags-windows-x86_omf-dmd":    ["/exet:nt/su:windows:6.0"],
+	"lflags-windows-x86_mscoff-dmd": ["/SUBSYSTEM:WINDOWS", "/ENTRY:mainCRTStartup"],
+	"lflags-windows-x86_64-dmd":     ["/SUBSYSTEM:WINDOWS", "/ENTRY:mainCRTStartup"]
+}

examples/linegraphrenderer/linegraphrenderer.code-workspace

@@ -0,0 +1,12 @@
+{
+	"folders": [
+		{
+			"path": "."
+		}
+	],
+	"settings": {
+		"d.projectImportPaths": [
+			"..\\..\\..\\dfl\\source"
+		]
+	}
+}

examples/linegraphrenderer/shell.bat

@@ -0,0 +1,3 @@
+set dmd_path=c:\d\dmd2\windows
+set dmc_path=c:\dmc\dm
+cmd

examples/linegraphrenderer/source/linegraphrenderer_sample.d

@@ -0,0 +1,111 @@
+import dfl;
+
+version(Have_dfl) // For DUB.
+{
+}
+else
+{
+	pragma(lib, "dfl.lib");
+}
+
+class MainForm : Form
+{
+	alias CustomLineGraphRenderer = LineGraphRenderer!(string,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int);
+	CustomLineGraphRenderer _graph;
+
+	alias CustomLineGraphRenderer2 = LineGraphRenderer!(int,int,int);
+	CustomLineGraphRenderer2 _graph2;
+
+	// alias CustomTableRenderer = TableRenderer!(string,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int);
+	// CustomTableRenderer _table;
+
+	// alias CustomTableRenderer2 = TableRenderer!(int,int,int);
+	// CustomTableRenderer2 _table2;
+
+	public this()
+	{
+		this.text = "LineGraphRenderer example";
+		this.size = Size(1000, 800);
+		string csv =
+			"教科,山田,佐藤,井上,田中,木下,藤原,山本,大森,伊藤,高橋,鈴木,中村,小林,松井,木村,近藤\n" ~ 
+			"国語,70,80,80,75,68,65,55,48,45,38,35,25,20,10,5,1\n" ~ 
+			"算数,60,90,80,75,68,65,55,48,45,38,35,25,20,10,5,1\n" ~ 
+			"理科,80,70,80,75,68,65,55,48,45,38,35,25,20,10,5,1\n" ~ 
+			"社会,90,60,80,75,68,65,55,48,45,38,35,25,20,10,5,1\n";
+		_graph = new CustomLineGraphRenderer(csv, 4);
+		_graph.showLegend = true;
+		_graph.legendLineHeight = 18;
+		_graph.chartMargins = ChartMargins(50, 50, 50, 50);
+		_graph.plotPointSize = 10;
+		_graph.verticalZeroPosition = VerticalZeroPosition.BOTTOM;
+		_graph.plotAreaAndLegendSpanX = 50;
+		_graph.plotAreaAndHorizontalScaleSpanY = 10;
+		_graph.plotAreaLeftPadding = 20;
+		_graph.plotAreaRightPadding = 20;
+		_graph.plotAreaHeightOnDisplay = 300;
+		_graph.hasHorizontalScale = true;
+		_graph.horizontalScaleSpan = 100;
+		_graph.horizonScaleLineInnerSide = 0;
+		_graph.horizonScaleLineOuterSide = 5;
+		_graph.horizontalScaleHeight = 12;
+		_graph.hasVerticalScale = true;
+		_graph.verticalMaxScale = 110;
+		_graph.verticalScaleLineOuterSide = 5;
+		_graph.verticalScaleLineInnerSide = 0;
+		_graph.verticalScaleSpan = 20;
+		_graph.verticalScaleWidth = 40;
+		_graph.backColor = Color.white;
+		_graph.plotAreaBoundsColor = Color.black;
+		_graph.plotLineColorPalette[0] = Color.black;
+		_graph.plotPointFormList[4..8] = PlotPointForm.CROSS;
+		_graph.plotPointFormList[8..12] = PlotPointForm.RECTANGLE;
+		_graph.plotPointFormList[12..16] = PlotPointForm.TRIANGLE;
+		_graph.relocate = Point(50, 50); // Relocate origin point based on top-left margins.
+
+		string csv2 =
+			"A,B,C\n" ~ 
+			"70,80,80\n" ~ 
+			"60,90,80\n" ~ 
+			"80,70,80\n" ~ 
+			"90,60,80\n";
+		_graph2 = new CustomLineGraphRenderer2(csv2, 4);
+		_graph2.chartMargins = ChartMargins(10, 10, 10, 10);
+		_graph2.relocate = Point(600, 50);
+
+		// _table = new CustomTableRenderer(csv, 4);
+		// _table.location = Point(50, 500);
+		// _table.hasHeader = true;
+		// _table.showHeader = true;
+		// _table.headerLine = true;
+		// _table.width[] = 40;
+
+		// _table2 = new CustomTableRenderer2(csv2, 4);
+		// _table2.hasHeader = true;
+		// _table2.showHeader = true;
+		// _table2.headerLine = true;
+		// _table2.width[] = 40;
+		// _table2.location = Point(680, 200);
+	}
+
+	protected override void onPaint(PaintEventArgs e)
+	{
+		if (_graph)
+			_graph.draw(e.graphics);
+		if (_graph2)
+			_graph2.draw(e.graphics);
+		// if (_table)
+		// 	_table.draw(e.graphics);
+		// if (_table2)
+		// 	_table2.draw(e.graphics);
+	}
+}
+
+static this()
+{
+	Application.enableVisualStyles();
+}
+
+void main()
+{
+	Application.run(new MainForm());
+}

examples/tablerenderer/source/tablerenderer_sample.d

@@ -10,7 +10,7 @@ else
 
 class MainForm : Form
 {
-	alias CustomTableRenderer = TableRenderer!(string, string, string);
+	alias CustomTableRenderer = TableRenderer!(string, int, int);
 	CustomTableRenderer _table;
 
 	public this()
@@ -18,19 +18,17 @@ class MainForm : Form
 		this.text = "TableRenderer example";
 		this.size = Size(450, 450);
 		string csv =
-			"ID,Name,Value\n" ~ 
+			"教科,大森,山田\n" ~ 
-			"1,Kyoto,100\n" ~ 
+			"国語,95,98\n" ~ 
-			"2,Osaka,50\n" ~ 
+			"理科,75,80\n" ~ 
-			"3,Tokyo,20\n" ~ 
+			"算数,90,78\n" ~ 
-			"4,Aomori,10\n";
+			"社会,80,76\n";
 		_table = new CustomTableRenderer(csv);
 		_table.height = 40;
-		_table.width[0] = 50;
+		_table.width[] = 80;
-		_table.width[1] = 80;
-		_table.width[2] = 150;
 		_table.paddingX = 10;
 		_table.paddingY = 12;
-		_table.margin = Point(20, 20);
+		_table.location = Point(20, 20);
 		_table.hasHeader = true; // true : 1st line is header.
 		_table.showHeader = true;
 		_table.firstRecord = 0;

source/dfl/chart.d

@@ -12,6 +12,7 @@ private import std.csv;
 private import std.typecons;
 private import std.conv;
 private import std.algorithm;
+private import std.range;
 
 ///
 class TableRenderer(T...)
@@ -22,7 +23,14 @@ class TableRenderer(T...)
 	enum DEFAULT_PADDING_Y = 5; ///
 
 	///
-	this(string csv)
+	this(string csv, int numRecords)
+	{
+		this(csv);
+		_firstRecord = 0;
+		_lastRecord = numRecords - 1;
+	}
+	/// ditto
+	this(string csv) // deprecated
 	{
 		_csv = csv;
 		_columns = T.length;
@@ -47,10 +55,10 @@ class TableRenderer(T...)
 		g.fillRectangle(new SolidBrush(_backColor), bounds);
 		// Draw top side line.
 		if (_topSideLine)
-			g.drawLine(new Pen(_lineColor), Point(margin.x, margin.y), Point(bounds.right, margin.y));
+			g.drawLine(new Pen(_lineColor), Point(location.x, location.y), Point(bounds.right, location.y));
 		// Draw header line.
 		if (_showHeader && _hasHeader && _headerLine)
-			g.drawLine(new Pen(_lineColor), Point(margin.x, margin.y + height), Point(bounds.right, margin.y + height));
+			g.drawLine(new Pen(_lineColor), Point(location.x, location.y + height), Point(bounds.right, location.y + height));
 		// Draw header.
 		int row; // -row- is line number in CSV.
 		int viewLine; // -viewLine- is line number on display.
@@ -58,10 +66,10 @@ class TableRenderer(T...)
 		{
 			if (_showHeader)
 			{
-				int y = margin.y + viewLine * height + _paddingY;
+				int y = location.y + viewLine * height + _paddingY;
 				foreach (col, value; csvReader!(Tuple!T)(_csv, null).header)
 				{
-					int x = margin.x + sum(_width[0..col]) + _paddingX;
+					int x = location.x + sum(_width[0..col]) + _paddingX;
 					g.drawText(to!string(value), _headerFont, _textColor, Rect(x, y, _width[col] - _paddingX, _height - _paddingY), _headerTextFormat);
 				}
 				row++;
@@ -79,17 +87,17 @@ class TableRenderer(T...)
 			int rows = (_hasHeader?1:0) + lastRecord - firstRecord + 1;
 			if (firstRecord + (_hasHeader?1:0) <= row && row <= rows)
 			{
-				int y = margin.y + viewLine * height + _paddingY;
+				int y = location.y + viewLine * height + _paddingY;
 				foreach (int col, value; record)
 				{
-					int x = margin.x + sum(_width[0..col]) + _paddingX;
+					int x = location.x + sum(_width[0..col]) + _paddingX;
 					g.drawText(to!string(value), _recordFont, _textColor, Rect(x, y, _width[col] - _paddingX, _height - _paddingY), _recordTextFormat);
 				}
 				// Draw horizontal line.
 				if (_horizontalLine && viewLine < lastRecord - firstRecord + (_showHeader?1:0))
 				{
-					int y2 = margin.y + height * (viewLine + 1);
+					int y2 = location.y + height * (viewLine + 1);
-					g.drawLine(new Pen(_lineColor), Point(margin.x, y2), Point(bounds.right, y2));
+					g.drawLine(new Pen(_lineColor), Point(location.x, y2), Point(bounds.right, y2));
 				}
 				row++;
 				viewLine++;
@@ -102,22 +110,22 @@ class TableRenderer(T...)
 		}
 		// Draw left side line.
 		if (_leftSideLine)
-			g.drawLine(new Pen(_lineColor), Point(margin.x, margin.y), Point(margin.x, margin.y + height * viewLine));
+			g.drawLine(new Pen(_lineColor), Point(location.x, location.y), Point(location.x, location.y + height * viewLine));
 		// Draw right side line.
 		if (_rightSideLine)
-			g.drawLine(new Pen(_lineColor), Point(bounds.right, margin.y), Point(bounds.right, margin.y + height * viewLine));
+			g.drawLine(new Pen(_lineColor), Point(bounds.right, location.y), Point(bounds.right, location.y + height * viewLine));
 		// Draw vertical line.
 		if (_verticalLine)
 		{
 			for (int i; i < _columns - 1; i++)
 			{
 				int w = sum(_width[0..i+1]);
-				g.drawLine(new Pen(_lineColor), Point(margin.x + w, margin.y), Point(margin.x + w, margin.y + height * viewLine));
+				g.drawLine(new Pen(_lineColor), Point(location.x + w, location.y), Point(location.x + w, location.y + height * viewLine));
 			}
 		}
 		// Draw bottom side line.
 		if (_bottomSideLine)
-			g.drawLine(new Pen(_lineColor), Point(margin.x, margin.y + height * viewLine), Point(bounds.right, margin.y + height * viewLine));
+			g.drawLine(new Pen(_lineColor), Point(location.x, location.y + height * viewLine), Point(bounds.right, location.y + height * viewLine));
 	}
 
 	///
@@ -180,19 +188,28 @@ class TableRenderer(T...)
 	Rect bounds() const
 	{
 		int rows = (_showHeader?1:0) + lastRecord - firstRecord + 1;
-		return Rect(_margin.x, _margin.y, sum(_width), height * rows);
+		return Rect(_location.x, _location.y, sum(_width), height * rows);
 	}
 
-	/// Left and Top margins.
+	/// Left and Top point.
-	void margin(Point pt)
+	void location(Point pt)
 	{
-		_margin.x = pt.x;
+		_location = pt;
-		_margin.y = pt.y;
 	}
 	/// ditto
-	Point margin() const
+	Point location() const
 	{
-		return _margin;
+		return _location;
+	}
+	/// ditto
+	deprecated void margin(Point pt)
+	{
+		location = pt;
+	}
+	/// ditto
+	deprecated Point margin()
+	{
+		return location;
 	}
 
 	///
@@ -250,16 +267,26 @@ class TableRenderer(T...)
 	struct WidthObject // Internal struct.
 	{
 		///
-		this(ref int[] w)
+		this(int[] w)
 		{
 			_arr = w;
 		}
 
-		///
+		/// Assign operator forwarding.
+		void opIndexAssign(int value)
+		{
+			_arr[] = value;
+		}
+		/// ditto
 		void opIndexAssign(int value, size_t i)
 		{
 			_arr[i] = value;
 		}
+		/// ditto
+		void opSliceAssign(int value, size_t i, size_t j)
+		{
+			_arr[i..j] = value;
+		}
 
 		///
 		int opIndex(size_t i)
@@ -321,7 +348,7 @@ class TableRenderer(T...)
 
 private:
 	string _csv;
-	Point _margin;
+	Point _location;
 	int _paddingX;
 	int _paddingY;
 	int _columns;
@@ -346,3 +373,577 @@ private:
 	TextFormat _headerTextFormat;
 	TextFormat _recordTextFormat;
 }
+
+///
+class LineGraphRenderer(T...)
+	if (is(T[0] == string) && T.length <= 17 || !is(T[0] == string) && T.length <= 16) // Supported number of colors is 16.
+{
+	///
+	this(string csv, int numRecords)
+	{
+		this(csv);
+		_firstRecord = 0;
+		_lastRecord = numRecords - 1;
+	}
+	/// ditto
+	this(string csv) // deprecated
+	{
+		_csv = csv;
+		_vZeroPos = VerticalZeroPosition.BOTTOM;
+		_chartMargins = ChartMargins(50, 50, 50, 50);
+		_backColor = Color.white;
+		_plotAreaBoundsColor = Color.black;
+		_plotAreaHeightOnDisplay = 100;
+		_plotAreaLeftPadding = 20;
+		_plotAreaRightPadding = 20;
+		_plotAreaAndLegendSpanX = 50;
+		_plotAreaAndHorizontalScaleSpanY = 10;
+		_plotPointSize = 10;
+		_plotLineColorPalette = [
+			Color.black,           // 0
+			Color.blue,            // 1
+			Color.red,             // 2
+			Color.purple,          // 3
+			Color.yellowGreen,     // 4
+			Color.lightBlue,       // 5
+			Color(0xFF,0xC2,0x0E), // 6: Use Himawari color as yellow.
+			Color.lightGray,       // 7
+			Color.black,           // 8
+			Color.darkBlue,        // 9
+			Color.darkRed,         // 10
+			Color.mediumPurple,    // 11
+			Color.darkGreen,       // 12
+			Color.darkSeaGreen,    // 13
+			Color.darkOrange,      // 14
+			Color.darkGray         // 15
+		];
+		for (int i; i < T.length; i++)
+		{
+			_plotPointFormList ~= PlotPointForm.CIRCLE;
+		}
+		_legendWidth = 100;
+		_legendLineHeight = 18;
+		_hasVerticalScale = false;
+		_verticalScaleWidth = 40;
+		_verticalMaxScale = 100;
+		_verticalScaleLineOuterSide = 5;
+		_verticalScaleLineInnerSide = 5;
+		_hasHorizontalScale = false;
+		_horizontalScaleSpan = 50;
+		_horizonScaleLineInnerSide = 5;
+		_horizonScaleLineOuterSide = 5;
+		_horizontalScaleHeight = 25;
+	}
+
+	/// Draw records.
+	void draw(Graphics g)
+	{
+		// Draw background.
+		Rect backgroundRect = Rect(
+			plotAreaBounds.x - _chartMargins.left,
+			plotAreaBounds.y - _chartMargins.top,
+			plotAreaBounds.width + _chartMargins.left + _chartMargins.right,
+			plotAreaBounds.height + _chartMargins.top + _chartMargins.bottom
+		);
+		if (_showLegend)
+		{
+			backgroundRect.width = plotAreaBounds.width + _chartMargins.left + _legendWidth + _chartMargins.right;
+			int legendBottom = _chartMargins.top + _legendLineHeight * (1 + cast(int)T.length) + _chartMargins.bottom;
+			if (legendBottom > backgroundRect.bottom)
+				backgroundRect.height = legendBottom;
+		}
+		if (_hasVerticalScale)
+		{
+			backgroundRect.x = plotAreaBounds.x - _chartMargins.left - _verticalScaleWidth,
+			backgroundRect.width = plotAreaBounds.width + _chartMargins.left + _legendWidth + _chartMargins.right + _verticalScaleWidth;
+		}
+		if (_hasHorizontalScale)
+		{
+			backgroundRect.height += _horizontalScaleHeight + _plotAreaAndHorizontalScaleSpanY;
+		}
+		g.fillRectangle(new SolidBrush(_backColor), backgroundRect);
+		// Draw bounds of plot area.
+		g.drawRectangle(new Pen(_plotAreaBoundsColor), plotAreaBounds);
+		// Draw vertical scale.
+		int baseY = (_vZeroPos == VerticalZeroPosition.BOTTOM ? 0: _plotAreaHeightOnDisplay);
+		double vRatio = cast(double)_plotAreaHeightOnDisplay / _verticalMaxScale;
+		if (_hasVerticalScale)
+		{
+			enum LINE_HEIGHT = 12f;
+			auto scaleList = iota(0, _verticalMaxScale, _verticalScaleSpan);
+			Font f = new Font("MS Gothic", LINE_HEIGHT);
+			int x = _originPoint.x - _verticalScaleWidth;
+			int index;
+			foreach (s; scaleList)
+			{
+				int y = cast(int)(baseY + _originPoint.y - LINE_HEIGHT / 2 + index * vRatio * _verticalScaleSpan * (_vZeroPos == VerticalZeroPosition.BOTTOM ? -1: 1));
+				// Draw vertical scalse label.
+				g.drawText(to!string(index * _verticalScaleSpan), f, Color.black, Rect(x, y, 100, 100));
+				// Draw vertical scalse line.
+				g.drawLine(
+					new Pen(_plotAreaBoundsColor),
+					_originPoint.x - _verticalScaleLineOuterSide,
+					cast(int)(y + LINE_HEIGHT / 2 + (_vZeroPos == VerticalZeroPosition.BOTTOM ? -1: 0)),
+					_originPoint.x + _verticalScaleLineInnerSide,
+					cast(int)(y + LINE_HEIGHT / 2 + (_vZeroPos == VerticalZeroPosition.BOTTOM ? -1: 0))
+				);
+				index++;
+			}
+		}
+		// Draw horizontal scale.
+		if (_hasHorizontalScale)
+		{
+			// Draw horizontal scale label.
+			static if (is(T[0] == string))
+			{{
+				int i;
+				foreach (label; csvReader!(Tuple!T)(_csv, null))
+				{
+					int x = _originPoint.x + _plotAreaLeftPadding + i * _horizontalScaleSpan - cast(int)_horizontalScaleHeight;
+					int y = baseY + _originPoint.y + (_vZeroPos == VerticalZeroPosition.BOTTOM ? _plotAreaAndHorizontalScaleSpanY: -_plotAreaAndHorizontalScaleSpanY - _horizontalScaleHeight);
+					g.drawText(
+						label[0],
+						new Font("MS Gothic", 12f),
+						_plotAreaBoundsColor,
+						Rect(x, y, _horizontalScaleSpan, _horizontalScaleHeight)
+					);
+					i++;
+				}
+			}}
+			//
+			for (int i; i < _lastRecord - _firstRecord + 1; i++)
+			{
+				int x = _originPoint.x + _plotAreaLeftPadding + i * _horizontalScaleSpan;
+				int y = baseY + _originPoint.y;
+				// Draw horizontal scale line.
+				g.drawLine(
+					new Pen(_plotAreaBoundsColor),
+					x,
+					y - _horizonScaleLineInnerSide * (_vZeroPos == VerticalZeroPosition.BOTTOM ? 1 : -1),
+					x,
+					y + _horizonScaleLineOuterSide * (_vZeroPos == VerticalZeroPosition.BOTTOM ? 1 : -1)
+				);
+			}
+		}
+		// Draw legend.
+		if (_showLegend)
+		{
+			int legendLine;
+			foreach (i, value; csvReader!(Tuple!T)(_csv, null).header)
+			{
+				static if (is(T[0] == string))
+				{
+					if (i == 0) continue;
+				}
+				int x = plotAreaBounds.right + _plotAreaAndLegendSpanX + _plotPointSize;
+				int y = plotAreaBounds.y + _legendLineHeight * cast(int)legendLine;
+				g.drawText(to!string(value), new Font("MS Gothic", 12f), Color.black, Rect(x, y, 100, 100));
+				_drawPlotPoint(
+					g,
+					new Pen(_plotLineColorPalette[legendLine]),
+					_plotPointFormList[legendLine],
+					_plotPointSize, x - _plotPointSize * 2, // Center X.
+					y + _legendLineHeight / 2 // Center Y.
+				);
+				legendLine++;
+			}
+		}
+		// Draw records.
+		Tuple!T prevRecord;
+		int x1 = _originPoint.x + _plotAreaLeftPadding;
+		int x2;
+		bool isFirstRecord = true;
+		auto csvRange = csvReader!(Tuple!T)(_csv, null).drop(_firstRecord);
+		foreach (currRecord; csvRange)
+		{
+			x2 = x1 + _horizontalScaleSpan;
+			bool isFirstColumn = true;
+			foreach (col, value; currRecord)
+			{
+				static if (!(is(T[0] == string) && col == 0))
+				{
+					int y1 = cast(int)(baseY + _originPoint.y + vRatio * prevRecord[col] * (_vZeroPos == VerticalZeroPosition.BOTTOM ? -1: 1));
+					int y2 = cast(int)(baseY + _originPoint.y + vRatio * value * (_vZeroPos == VerticalZeroPosition.BOTTOM ? -1: 1));
+					int seriesIndex = col - (is(T[0] == string)?1:0);
+					if (!isFirstRecord)
+					{
+						g.drawLine(
+							new Pen(_plotLineColorPalette[seriesIndex]),
+							x1 - _horizontalScaleSpan,
+							y1,
+							x2 - _horizontalScaleSpan,
+							y2
+						);
+					}
+					_drawPlotPoint(
+						g,
+						new Pen(_plotLineColorPalette[seriesIndex]),
+						_plotPointFormList[seriesIndex],
+						_plotPointSize,
+						x2 - _horizontalScaleSpan, // Center X.
+						y2 // Center Y.
+					);
+				}
+				isFirstColumn = false;
+			}
+			x1 = x1 + _horizontalScaleSpan;
+			prevRecord = currRecord;
+			isFirstRecord = false;
+		}
+	}
+
+	///
+	Rect plotAreaBounds() const
+	{
+		return Rect(
+			_originPoint.x,
+			_originPoint.y + _plotAreaHeightOnDisplay * (_vZeroPos == VerticalZeroPosition.BOTTOM ? -1 : 1),
+			cast(int)((_lastRecord - _firstRecord) * _horizontalScaleSpan) + _plotAreaLeftPadding + _plotAreaRightPadding,
+			_plotAreaHeightOnDisplay
+		);
+	}
+
+	///
+	void originPoint(Point pt)
+	{
+		_originPoint = pt;
+	}
+
+	///
+	void relocate(Point pt)
+	{
+		final switch (_vZeroPos)
+		{
+		case VerticalZeroPosition.BOTTOM:
+			int x = _chartMargins.left + _verticalScaleWidth + pt.x;
+			int y = _chartMargins.top + _plotAreaHeightOnDisplay + pt.y;
+			originPoint = Point(x, y);
+			break;
+		case VerticalZeroPosition.TOP:
+			int x = _chartMargins.left + _verticalScaleWidth + pt.x;
+			int y = _chartMargins.top + pt.y - _plotAreaHeightOnDisplay;
+			originPoint = Point(x, y);
+		}
+	}
+
+	///
+	void verticalZeroPosition(VerticalZeroPosition vZeroPos) // setter
+	{
+		_vZeroPos = vZeroPos;
+	}
+
+	///
+	void chartMargins(ChartMargins m)
+	{
+		_chartMargins = m;
+	}
+
+	///
+	void plotPointSize(int size)
+	{
+		_plotPointSize = size;
+	}
+
+	///
+	void showLegend(bool byes)
+	{
+		_showLegend = byes;
+	}
+
+	///
+	void plotLineColorPalette(Color[] colors)
+	{
+		_plotLineColorPalette = colors;
+	}
+	/// ditto
+	Color[] plotLineColorPalette()
+	{
+		return _plotLineColorPalette;
+	}
+
+	///
+	void plotAreaAndLegendSpanX(int x)
+	{
+		_plotAreaAndLegendSpanX = x;
+	}
+
+	///
+	void plotAreaAndHorizontalScaleSpanY(int y)
+	{
+		_plotAreaAndHorizontalScaleSpanY = y;
+	}
+
+	///
+	void legendLineHeight(int h)
+	{
+		_legendLineHeight = h;
+	}
+
+	///
+	void legendWidth(int w)
+	{
+		_legendWidth = w;
+	}
+
+	///
+	void plotAreaRightPadding(int x)
+	{
+		_plotAreaRightPadding = x;
+	}
+
+	///
+	void plotAreaLeftPadding(int x)
+	{
+		_plotAreaLeftPadding = x;
+	}
+
+	///
+	void firstRecord(int i)
+	{
+		_firstRecord = i;
+	}
+
+	///
+	void lastRecord(int i)
+	{
+		_lastRecord = i;
+	}
+	
+	///
+	void backColor(Color c)
+	{
+		_backColor = c;
+	}
+
+	///
+	void plotAreaBoundsColor(Color c)
+	{
+		_plotAreaBoundsColor = c;
+	}
+
+	///
+	void horizontalScaleSpan(int x)
+	{
+		_horizontalScaleSpan = x;
+	}
+
+	///
+	void verticalMaxScale(int m)
+	{
+		_verticalMaxScale = m;
+	}
+
+	///
+	void plotAreaHeightOnDisplay(int h)
+	{
+		_plotAreaHeightOnDisplay = h;
+	}
+
+	///
+	void hasVerticalScale(bool byes)
+	{
+		_hasVerticalScale = byes;
+	}
+
+	///
+	void hasHorizontalScale(bool byes)
+	{
+		_hasHorizontalScale = byes;
+	}
+
+	///
+	void verticalScaleSpan(int scale)
+	{
+		_verticalScaleSpan = scale;
+	}
+
+	///
+	void verticalScaleWidth(int w)
+	{
+		_verticalScaleWidth = w;
+	}
+
+	///
+	void verticalScaleLineOuterSide(int w)
+	{
+		_verticalScaleLineOuterSide = w;
+	}
+
+	///
+	void verticalScaleLineInnerSide(int w)
+	{
+		_verticalScaleLineInnerSide = w;
+	}
+
+	///
+	void horizonScaleLineInnerSide(int h)
+	{
+		_horizonScaleLineInnerSide = h;
+	}
+
+	///
+	void horizonScaleLineOuterSide(int h)
+	{
+		_horizonScaleLineOuterSide = h;
+	}
+
+	///
+	void horizontalScaleHeight(int h)
+	{
+		_horizontalScaleHeight = h;
+	}
+
+	///
+	void plotPointFormList(PlotPointForm[] forms)
+	{
+		_plotPointFormList = forms;
+	}
+	/// ditto
+	PlotPointForm[] plotPointFormList()
+	{
+		return _plotPointFormList;
+	}
+
+private:
+	string _csv;
+	int _firstRecord;
+	int _lastRecord;
+	VerticalZeroPosition _vZeroPos;
+	Point _originPoint;
+	ChartMargins _chartMargins;
+	bool _showLegend;
+	int _legendLineHeight;
+	int _legendWidth;
+	Color _backColor;
+	Color _plotAreaBoundsColor;
+	int _plotAreaLeftPadding;
+	int _plotAreaRightPadding;
+	int _plotAreaHeightOnDisplay;
+	int _plotAreaAndLegendSpanX;
+	int _plotAreaAndHorizontalScaleSpanY;
+	int _plotPointSize;
+	Color[] _plotLineColorPalette;
+	PlotPointForm[] _plotPointFormList;
+	bool _hasHorizontalScale;
+	int _horizontalScaleSpan;
+	int _horizontalScaleHeight;
+	int _horizonScaleLineInnerSide;
+	int _horizonScaleLineOuterSide;
+	bool _hasVerticalScale;
+	int _verticalMaxScale;
+	int _verticalScaleSpan;
+	int _verticalScaleWidth;
+	int _verticalScaleLineOuterSide;
+	int _verticalScaleLineInnerSide;
+
+	///
+	void _drawPlotPoint(Graphics g, Pen pen, PlotPointForm form, int plotPointSize, int centerX, int centerY)
+	{
+		final switch (form)
+		{
+		case PlotPointForm.CIRCLE:
+			g.drawEllipse(
+				pen,
+				centerX - _plotPointSize / 2,
+				centerY - _plotPointSize / 2,
+				plotPointSize, // width
+				plotPointSize // height
+			);
+			break;
+		case PlotPointForm.RECTANGLE:
+			g.drawRectangle(
+				pen,
+				centerX - _plotPointSize / 2,
+				centerY - _plotPointSize / 2,
+				plotPointSize, // width
+				plotPointSize // height
+			);
+			break;
+		case PlotPointForm.CROSS:
+			g.drawLine(
+				pen,
+				centerX - _plotPointSize / 2,
+				centerY - _plotPointSize / 2,
+				centerX + _plotPointSize / 2 + 1,
+				centerY + _plotPointSize / 2 + 1
+			);
+			g.drawLine(
+				pen,
+				centerX + _plotPointSize / 2,
+				centerY - _plotPointSize / 2,
+				centerX - _plotPointSize / 2 - 1,
+				centerY + _plotPointSize / 2 + 1
+			);
+			break;
+		case PlotPointForm.TRIANGLE:
+			g.drawLine(
+				pen,
+				centerX,
+				centerY - _plotPointSize * 2 / 3,
+				centerX + _plotPointSize / 2,
+				centerY + _plotPointSize / 3
+			);
+			g.drawLine(
+				pen,
+				centerX,
+				centerY - _plotPointSize * 2 / 3,
+				centerX - _plotPointSize / 2,
+				centerY + _plotPointSize / 3
+			);
+			g.drawLine(
+				pen,
+				centerX - _plotPointSize / 2,
+				centerY + _plotPointSize / 3,
+				centerX + _plotPointSize / 2,
+				centerY + _plotPointSize / 3
+			);
+			break;
+		}
+	}
+}
+
+///
+struct ChartMargins
+{
+	int left; /// Left margin.
+	int top; /// Top margin.
+	int right; /// Right margin.
+	int bottom; /// Bottom margin.
+
+	///
+	this(int left, int top, int right, int bottom)
+	{
+		this.left = left;
+		this.top = top;
+		this.right = right;
+		this.bottom = bottom;
+	}
+
+	///
+	string toString() const
+	{
+		
+		string str = "[";
+		str ~= to!string(left) ~ " ,";
+		str ~= to!string(top) ~ " ,";
+		str ~= to!string(right) ~ " ,";
+		str ~= to!string(bottom) ~ "]";
+		return str;
+	}
+}
+
+///
+enum VerticalZeroPosition
+{
+	TOP,
+	BOTTOM,
+}
+
+///
+enum PlotPointForm
+{
+	CIRCLE,
+	RECTANGLE,
+	CROSS,
+	TRIANGLE,
+}