Componentes.Terceros.FastRe.../official/4.7.5/Source/frxChart.pas
2008-10-20 09:06:40 +00:00

672 lines
18 KiB
ObjectPascal

{******************************************}
{ }
{ FastReport v4.0 }
{ TeeChart Add-In Object }
{ }
{ Copyright (c) 1998-2008 }
{ by Alexander Tzyganenko, }
{ Fast Reports Inc. }
{ }
{******************************************}
unit frxChart;
interface
{$I frx.inc}
{$I tee.inc}
uses
Windows, Messages, SysUtils, Classes, Graphics, Menus, Controls,
frxClass,
TeeProcs, TeEngine, Chart, Series, TeCanvas
{$IFDEF Delphi6}
, Variants
{$ENDIF};
type
TfrxChartObject = class(TComponent); // fake component
TChartClass = class of TCustomChart;
TfrxSeriesDataType = (dtDBData, dtBandData, dtFixedData);
TfrxSeriesSortOrder = (soNone, soAscending, soDescending);
TfrxSeriesXType = (xtText, xtNumber, xtDate);
TSeriesClass = class of TChartSeries;
TfrxChartSeries = (csLine, csArea, csPoint, csBar, csHorizBar,
csPie, csGantt, csFastLine, csArrow, csBubble, csChartShape, csHorizArea,
csHorizLine, csPolar, csRadar, csPolarBar, csGauge, csSmith, csPyramid,
csDonut, csBezier, csCandle, csVolume, csPointFigure, csHistogram,
csHorizHistogram, csErrorBar, csError, csHighLow, csFunnel, csBox,
csHorizBox, csSurface, csContour, csWaterFall, csColorGrid, csVector3D,
csTower, csTriSurface, csPoint3D, csBubble3D, csMyPoint, csBarJoin, csBar3D);
TfrxSeriesItem = class(TCollectionItem)
private
FDataBand: TfrxDataBand;
FDataSet: TfrxDataSet;
FDataSetName: String;
FDataType: TfrxSeriesDataType;
FSortOrder: TfrxSeriesSortOrder;
FTopN: Integer;
FTopNCaption: String;
FSource1: String;
FSource2: String;
FSource3: String;
FSource4: String;
FSource5: String;
FSource6: String;
FXType: TfrxSeriesXType;
FValues1: String;
FValues2: String;
FValues3: String;
FValues4: String;
FValues5: String;
FValues6: String;
procedure FillSeries(Series: TChartSeries);
procedure SetDataSet(const Value: TfrxDataSet);
procedure SetDataSetName(const Value: String);
function GetDataSetName: String;
published
property DataType: TfrxSeriesDataType read FDataType write FDataType;
property DataBand: TfrxDataBand read FDataBand write FDataBand;
property DataSet: TfrxDataSet read FDataSet write SetDataSet;
property DataSetName: String read GetDataSetName write SetDataSetName;
property SortOrder: TfrxSeriesSortOrder read FSortOrder write FSortOrder;
property TopN: Integer read FTopN write FTopN;
property TopNCaption: String read FTopNCaption write FTopNCaption;
property XType: TfrxSeriesXType read FXType write FXType;
{ source expressions }
property Source1: String read FSource1 write FSource1;
property Source2: String read FSource2 write FSource2;
property Source3: String read FSource3 write FSource3;
property Source4: String read FSource4 write FSource4;
property Source5: String read FSource5 write FSource5;
property Source6: String read FSource6 write FSource6;
{ ready values. For internal use only. }
property Values1: String read FValues1 write FValues1;
property Values2: String read FValues2 write FValues2;
property Values3: String read FValues3 write FValues3;
property Values4: String read FValues4 write FValues4;
property Values5: String read FValues5 write FValues5;
property Values6: String read FValues6 write FValues6;
{ backward compatibility }
property XSource: String read FSource1 write FSource1;
property YSource: String read FSource2 write FSource2;
property XValues: String read FValues1 write FValues1;
property YValues: String read FValues2 write FValues2;
{}
end;
TfrxSeriesData = class(TCollection)
private
FReport: TfrxReport;
function GetSeries(Index: Integer): TfrxSeriesItem;
public
constructor Create(Report: TfrxReport);
function Add: TfrxSeriesItem;
property Items[Index: Integer]: TfrxSeriesItem read GetSeries; default;
end;
TfrxChartView = class(TfrxView)
private
FChart: TCustomChart;
FSeriesData: TfrxSeriesData;
procedure FillChart;
procedure ReadData(Stream: TStream);
procedure ReadData1(Reader: TReader);
procedure ReadData2(Reader: TReader);
procedure WriteData(Stream: TStream);
procedure WriteData1(Writer: TWriter);
procedure WriteData2(Writer: TWriter);
protected
procedure DefineProperties(Filer: TFiler); override;
procedure Notification(AComponent: TComponent; Operation: TOperation); override;
procedure CreateChart; virtual;
class function GetChartClass: TChartClass; virtual;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
class function GetDescription: String; override;
procedure Draw(Canvas: TCanvas; ScaleX, ScaleY, OffsetX, OffsetY: Extended); override;
procedure AfterPrint; override;
procedure GetData; override;
procedure BeforeStartReport; override;
procedure OnNotify(Sender: TObject); override;
procedure ClearSeries;
procedure AddSeries(Series: TfrxChartSeries);
property Chart: TCustomChart read FChart;
property SeriesData: TfrxSeriesData read FSeriesData;
published
property BrushStyle;
property Color;
property Cursor;
property Frame;
property TagStr;
property URL;
end;
implementation
uses
frxChartHelpers, frxChartRTTI,
{$IFNDEF NO_EDITORS}
frxChartEditor,
{$ENDIF}
frxDsgnIntf, frxUtils, frxRes, Math;
{ TfrxSeriesItem }
procedure TfrxSeriesItem.SetDataSet(const Value: TfrxDataSet);
begin
FDataSet := Value;
if FDataSet = nil then
FDataSetName := '' else
FDataSetName := FDataSet.UserName;
end;
procedure TfrxSeriesItem.SetDataSetName(const Value: String);
begin
FDataSetName := Value;
if FDataSetName = '' then
FDataSet := nil
else if TfrxSeriesData(Collection).FReport <> nil then
FDataSet := TfrxSeriesData(Collection).FReport.FindDataSet(FDataSet, FDataSetName);
end;
function TfrxSeriesItem.GetDataSetName: String;
begin
if FDataSet = nil then
Result := FDataSetName else
Result := FDataSet.UserName;
end;
procedure TfrxSeriesItem.FillSeries(Series: TChartSeries);
var
i: Integer;
sl1, sl2, sl3, sl4, sl5, sl6: TStringList;
v1, v2, v3, v4, v5, v6: String;
Helper: TfrxSeriesHelper;
procedure Sort;
var
i, idx, iStart, SortOrd: Integer;
d, mMax: Double;
s: String;
begin
if sl1.Count <> sl2.Count then exit;
{bug fix, stringList sort all negative values as string }
if FSortOrder = soAscending then SortOrd := 1
else SortOrd := -1;
iStart := 0;
while sl2.Count > iStart do
begin
idx := 0;
mMax := MaxDouble * SortOrd;
for i := iStart to sl2.Count - 1 do
begin
s := sl2[i];
if not frxIsValidFloat(s) then d := 0
else d := frxStrToFloat(s);
if d * SortOrd < mMax * SortOrd then
begin
mMax := d;
idx := i;
end;
end;
sl1.Move(idx,iStart);
sl2.Move(idx,iStart);
if idx < sl3.Count then sl3.Move(idx, iStart);
if idx < sl4.Count then sl4.Move(idx, iStart);
if idx < sl5.Count then sl5.Move(idx, iStart);
if idx < sl6.Count then sl6.Move(idx, iStart);
inc(iStart);
end;
end;
procedure MakeTopN;
var
i, idx, iStart: Integer;
d, mMax: Double;
s: String;
begin
if sl1.Count <> sl2.Count then exit;
{bug fix, stringList sort all negative values as string }
iStart := 0;
while sl2.Count > iStart do
begin
mMax := - MaxDouble;
idx := 0;
for i := iStart to sl2.Count - 1 do
begin
s := sl2[i];
if not frxIsValidFloat(s) then d := 0
else d := frxStrToFloat(s);
if d > mMax then
begin
mMax := d;
idx := i;
end;
end;
sl1.Move(idx,iStart);
sl2.Move(idx,iStart);
if idx < sl3.Count then sl3.Move(idx, iStart);
if idx < sl4.Count then sl4.Move(idx, iStart);
if idx < sl5.Count then sl5.Move(idx, iStart);
if idx < sl6.Count then sl6.Move(idx, iStart);
inc(iStart);
end;
d := 0;
for i := sl2.Count - 1 downto FTopN - 1 do
begin
d := d + frxStrToFloat(sl2[i]);
sl1.Delete(i);
sl2.Delete(i);
if i < sl3.Count then sl3.Delete(i);
if i < sl4.Count then sl4.Delete(i);
if i < sl5.Count then sl5.Delete(i);
if i < sl6.Count then sl6.Delete(i);
end;
sl1.Add(FTopNCaption);
sl2.Add(FloatToStr(d));
end;
begin
sl1 := TStringList.Create;
sl2 := TStringList.Create;
sl3 := TStringList.Create;
sl4 := TStringList.Create;
sl5 := TStringList.Create;
sl6 := TStringList.Create;
Series.Clear;
v1 := FValues1;
if (v1 <> '') and (v1[1] = ';') then
Delete(v1, 1, 1);
v2 := FValues2;
if (v2 <> '') and (v2[1] = ';') then
Delete(v2, 1, 1);
v3 := FValues3;
if (v3 <> '') and (v3[1] = ';') then
Delete(v3, 1, 1);
v4 := FValues4;
if (v4 <> '') and (v4[1] = ';') then
Delete(v4, 1, 1);
v5 := FValues5;
if (v5 <> '') and (v5[1] = ';') then
Delete(v5, 1, 1);
v6 := FValues6;
if (v6 <> '') and (v6[1] = ';') then
Delete(v6, 1, 1);
frxSetCommaText(v1, sl1);
frxSetCommaText(v2, sl2);
frxSetCommaText(v3, sl3);
frxSetCommaText(v4, sl4);
frxSetCommaText(v5, sl5);
frxSetCommaText(v6, sl6);
Helper := frxFindSeriesHelper(Series);
try
if sl2.Count > 0 then
begin
if (FTopN > 0) and (FTopN < sl2.Count) then
MakeTopN
else if FSortOrder <> soNone then
Sort;
for i := 0 to sl2.Count - 1 do
begin
if i < sl1.Count then v1 := sl1[i] else v1 := '';
if i < sl2.Count then v2 := sl2[i] else v2 := '';
if i < sl3.Count then v3 := sl3[i] else v3 := '';
if i < sl4.Count then v4 := sl4[i] else v4 := '';
if i < sl5.Count then v5 := sl5[i] else v5 := '';
if i < sl6.Count then v6 := sl6[i] else v6 := '';
Helper.AddValues(Series, v1, v2, v3, v4, v5, v6, FXType);
end;
end;
finally
Helper.Free;
sl1.Free;
sl2.Free;
sl3.Free;
sl4.Free;
sl5.Free;
sl6.Free;
end;
end;
{ TfrxSeriesData }
constructor TfrxSeriesData.Create(Report: TfrxReport);
begin
inherited Create(TfrxSeriesItem);
FReport := Report;
end;
function TfrxSeriesData.Add: TfrxSeriesItem;
begin
Result := TfrxSeriesItem(inherited Add);
end;
function TfrxSeriesData.GetSeries(Index: Integer): TfrxSeriesItem;
begin
Result := TfrxSeriesItem(inherited Items[Index]);
end;
{ TfrxChartView }
constructor TfrxChartView.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
CreateChart;
FSeriesData := TfrxSeriesData.Create(Report);
end;
destructor TfrxChartView.Destroy;
begin
FChart.Free;
inherited Destroy;
FSeriesData.Free;
end;
class function TfrxChartView.GetDescription: String;
begin
Result := frxResources.Get('obChart');
end;
procedure TfrxChartView.Notification(AComponent: TComponent; Operation: TOperation);
var
i: Integer;
begin
inherited;
if Operation = opRemove then
begin
for i := 0 to FSeriesData.Count - 1 do
if AComponent is TfrxDataSet then
begin
if FSeriesData[i].DataSet = AComponent then
FSeriesData[i].DataSet := nil;
end
else if AComponent is TfrxBand then
begin
if FSeriesData[i].DataBand = AComponent then
FSeriesData[i].DataBand := nil;
end;
end;
end;
class function TfrxChartView.GetChartClass: TChartClass;
begin
Result := TChart;
end;
procedure TfrxChartView.CreateChart;
begin
FChart := GetChartClass.Create(Self);
with FChart do
begin
Color := clWhite;
BevelInner := bvNone;
BevelOuter := bvNone;
Name := 'Chart';
Frame.Visible := False;
View3DOptions.Rotation := 0;
Title.Text.Text := '';
end;
end;
procedure TfrxChartView.DefineProperties(Filer: TFiler);
begin
inherited;
Filer.DefineBinaryProperty('Chart', ReadData, WriteData, True);
Filer.DefineProperty('ChartElevation', ReadData1, WriteData1, True);
Filer.DefineProperty('SeriesData', ReadData2, WriteData2, True);
end;
procedure TfrxChartView.ReadData(Stream: TStream);
begin
FChart.Free;
CreateChart;
Stream.ReadComponent(FChart);
end;
procedure TfrxChartView.WriteData(Stream: TStream);
begin
Stream.WriteComponent(FChart);
end;
procedure TfrxChartView.ReadData1(Reader: TReader);
begin
FChart.View3DOptions.Elevation := Reader.ReadInteger;
end;
procedure TfrxChartView.WriteData1(Writer: TWriter);
begin
Writer.WriteInteger(FChart.View3DOptions.Elevation);
end;
procedure TfrxChartView.ReadData2(Reader: TReader);
begin
frxReadCollection(FSeriesData, Reader, Self);
end;
procedure TfrxChartView.WriteData2(Writer: TWriter);
begin
frxWriteCollection(FSeriesData, Writer, Self);
end;
procedure TfrxChartView.FillChart;
var
i: Integer;
begin
for i := 0 to FSeriesData.Count - 1 do
FSeriesData[i].FillSeries(FChart.Series[i]);
end;
procedure TfrxChartView.Draw(Canvas: TCanvas; ScaleX, ScaleY, OffsetX,
OffsetY: Extended);
var
EMF: TMetafile;
begin
BeginDraw(Canvas, ScaleX, ScaleY, OffsetX, OffsetY);
DrawBackground;
FillChart;
if Color = clTransparent then
FChart.Color := clWhite else
FChart.Color := Color;
FChart.BufferedDisplay := True;
EMF := FChart.TeeCreateMetafile(False, Rect(0, 0, Round(Width), Round(Height)));
Canvas.StretchDraw(Rect(FX, FY, FX1, FY1), EMF);
EMF.Free;
DrawFrame;
end;
procedure TfrxChartView.AfterPrint;
var
i: Integer;
begin
for i := 0 to FSeriesData.Count - 1 do
with FSeriesData[i] do
begin
Values1 := '';
Values2 := '';
Values3 := '';
Values4 := '';
Values5 := '';
Values6 := '';
end;
end;
procedure TfrxChartView.GetData;
var
i: Integer;
begin
inherited;
for i := 0 to FSeriesData.Count - 1 do
with FSeriesData[i] do
if (DataType = dtDBData) and (DataSet <> nil) then
begin
Values1 := '';
Values2 := '';
Values3 := '';
Values4 := '';
Values5 := '';
Values6 := '';
DataSet.First;
while not DataSet.Eof do
begin
if Source1 <> '' then
Values1 := Values1 + ';' + VarToStr(Report.Calc(Source1));
if Source2 <> '' then
Values2 := Values2 + ';' + VarToStr(Report.Calc(Source2));
if Source3 <> '' then
Values3 := Values3 + ';' + VarToStr(Report.Calc(Source3));
if Source4 <> '' then
Values4 := Values4 + ';' + VarToStr(Report.Calc(Source4));
if Source5 <> '' then
Values5 := Values5 + ';' + VarToStr(Report.Calc(Source5));
if Source6 <> '' then
Values6 := Values6 + ';' + VarToStr(Report.Calc(Source6));
DataSet.Next;
end;
end
else if DataType = dtFixedData then
begin
Values1 := Source1;
Values2 := Source2;
Values3 := Source3;
Values4 := Source4;
Values5 := Source5;
Values6 := Source6;
end
end;
procedure TfrxChartView.BeforeStartReport;
var
i: Integer;
begin
for i := 0 to FSeriesData.Count - 1 do
with FSeriesData[i] do
begin
Values1 := '';
Values2 := '';
Values3 := '';
Values4 := '';
Values5 := '';
Values6 := '';
end;
Report.Engine.NotifyList.Add(Self);
end;
procedure TfrxChartView.OnNotify(Sender: TObject);
var
i: Integer;
begin
inherited;
for i := 0 to FSeriesData.Count - 1 do
with FSeriesData[i] do
if (DataType = dtBandData) and (DataBand = Sender) then
begin
Report.CurObject := Self.Name;
if Source1 <> '' then
Values1 := Values1 + ';' + VarToStr(Report.Calc(Source1));
if Source2 <> '' then
Values2 := Values2 + ';' + VarToStr(Report.Calc(Source2));
if Source3 <> '' then
Values3 := Values3 + ';' + VarToStr(Report.Calc(Source3));
if Source4 <> '' then
Values4 := Values4 + ';' + VarToStr(Report.Calc(Source4));
if Source5 <> '' then
Values5 := Values5 + ';' + VarToStr(Report.Calc(Source5));
if Source6 <> '' then
Values6 := Values6 + ';' + VarToStr(Report.Calc(Source6));
end;
end;
procedure TfrxChartView.AddSeries(Series: TfrxChartSeries);
var
sc: TSeriesClass;
s: TChartSeries;
b: Boolean;
begin
sc := frxChartSeries[Integer(Series)];
s := TChartSeries(sc.NewInstance);
s.Create(Chart);
Chart.AddSeries(s);
SeriesData.Add;
with Chart do
begin
b := not (s is TPieSeries);
View3DOptions.Orthogonal := b;
AxisVisible := b;
View3DWalls := b;
end;
end;
procedure TfrxChartView.ClearSeries;
begin
FChart.Free;
CreateChart;
SeriesData.Clear;
end;
initialization
{$IFNDEF TeeChartStd}
{$IFNDEF TeeChartStd7}
{$IFNDEF TeeChart4}
RegisterTeeStandardSeries;
{$ENDIF}
{$ENDIF}
{$ENDIF}
frxObjects.RegisterObject1(TfrxChartView, nil, '', '', 0, 25);
finalization
frxObjects.UnRegister(TfrxChartView);
end.
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