jvcllaz: Fix text background color error in JvPenEditor of JvChartDemo.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@7178 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/jvcllaz/examples/JvChartDemo/jvchartdemofm.lfm

@@ -569,9 +569,9 @@ object JvChartDemoForm: TJvChartDemoForm
         ShortCut = 16455
         OnClick = ShowgapinLineChart1Click
       end
-      object DateTimeAxisMode: TMenuItem
+      object mnuDateTimeAxisMode: TMenuItem
         Caption = 'Date/Time Axis Mode'
-        OnClick = DateTimeAxisModeClick
+        OnClick = mnuDateTimeAxisModeClick
       end
       object MenuNegValueTest: TMenuItem
         AutoCheck = True

components/jvcllaz/examples/JvChartDemo/jvchartdemofm.pas

@@ -105,7 +105,7 @@ type
     ShowDataInListbox1: TMenuItem;
     N4: TMenuItem;
     LargeDataset576samples1: TMenuItem;
-    DateTimeAxisMode: TMenuItem;
+    mnuDateTimeAxisMode: TMenuItem;
     PrintOptions1: TMenuItem;
     PrinterSetupDialog1: TPrinterSetupDialog;
     PrintDialog1: TPrintDialog;
@@ -145,7 +145,7 @@ type
     procedure Timer1Timer(Sender: TObject);
     procedure ShowDataInListbox1Click(Sender: TObject);
     procedure LargeDataset576samples1Click(Sender: TObject);
-    procedure DateTimeAxisModeClick(Sender: TObject);
+    procedure mnuDateTimeAxisModeClick(Sender: TObject);
 
     procedure FormCreate(Sender: TObject);
     procedure FormDestroy(Sender: TObject);
@@ -281,7 +281,7 @@ begin
   Fds := Fdt + (FGenerationIndex / 576);
 
     // There are TWO ways to get an X Axis label plotted:
-  if DateTimeAxisMode.Checked then
+  if mnuDateTimeAxisMode.Checked then
     Chart.Data.Timestamp[I] := Fds // X legends generated by timestamps
   else
     // X Legends generated by user are used by default.
@@ -366,7 +366,7 @@ begin
 
   Randomize;
 
-  Chart.Options.XAxisDateTimeMode := DateTimeAxisMode.Checked; // Use datetime timestamp labels, just Fer Instance.
+  Chart.Options.XAxisDateTimeMode := mnuDateTimeAxisMode.Checked; // Use datetime timestamp labels, just Fer Instance.
 
   if not Chart.Options.XAxisDateTimeMode then
     Chart.Options.XAxisLegendSkipBy := 5;
@@ -869,11 +869,11 @@ begin
   NewValues;
 end;
 
-procedure TJvChartDemoForm.DateTimeAxisModeClick(Sender: TObject);
+procedure TJvChartDemoForm.mnuDateTimeAxisModeClick(Sender: TObject);
 begin
-  DateTimeAxisMode.Checked := not DateTimeAxisMode.Checked;
+  mnuDateTimeAxisMode.Checked := not mnuDateTimeAxisMode.Checked;
   if SpeedButtonTestMouseOver.Down then begin
-      Chart.Options.XLegends.Clear;
+    Chart.Options.XLegends.Clear;
   end else
     NewValues;
 end;
@@ -996,7 +996,6 @@ begin
   marker1.Caption :='Start';
   marker1.Visible := true;
 
-
   marker2 := Chart.AddFloatingMarker;
   marker2.XPosition := 66;
   marker2.YPosition := Chart.Data.Value[0,marker2.XPosition]; // Snap to Pen 1

components/jvcllaz/examples/JvChartDemo/jvpeneditor.lfm

@@ -8,6 +8,7 @@ object PenEditorForm: TPenEditorForm
   ClientWidth = 505
   OnCreate = FormCreate
   OnDestroy = FormDestroy
+  Position = poScreenCenter
   LCLVersion = '2.1.0.0'
   object btnPenColor: TButton
     Left = 232

components/jvcllaz/examples/JvChartDemo/jvpeneditor.pas

@@ -6,8 +6,8 @@ interface
 
 uses
   Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ExtCtrls, StdCtrls,
-  Spin, ButtonPanel,Contnrs,
-  JvChart, Types;
+  ButtonPanel, Contnrs, Types,
+  JvChart;
 
 type
   TPenObj = class
@@ -236,6 +236,7 @@ begin
   end;
 
   // Text
+  lbPens.Canvas.Brush.Style := bsClear;
   lbPens.Canvas.TextOut(R.Right + 2, (R.Top + R.Bottom - lbPens.Canvas.TextHeight('Rg')) div 2, pen.Legend);
 
   // Focus rect

components/jvcllaz/run/JvCustomControls/jvchart.pas

@@ -103,8 +103,6 @@ unit JvChart;
 interface
 
 uses
-  {
-  Windows, Messages, }
   LCLType, LCLIntf,
   Classes, Types, Graphics, Controls, Contnrs,
   JvComponent;
@@ -115,7 +113,7 @@ const
   JvDefaultHintColor = TColor($00DDFBFA);
   JvDefaultAvgLineColor = TColor($00EEDDDD);
   JvDefaultDivisionLineColor = clLtGray; //NEW!
-  JvDefaultShadowColor = clLtGray; //NEW!
+  JvDefaultShadowColor = clDkGray; //NEW!
   JvDefaultPaperColor = clWhite;
 
   JvDefaultYLegends = 20;
@@ -4587,6 +4585,9 @@ procedure TJvChart.MyXHeader(ACanvas: TCanvas; StrText: string);
 var
   X, Y, H: Integer;
 begin
+  if StrText = '' then
+    exit;
+
   H := ACanvas.TextHeight(StrText);
   MyAxisFont(ACanvas);
   Y := Options.YStartOffset + Options.YEnd + Round(1.6 * H);
@@ -4598,6 +4599,7 @@ begin
   end
   else
   begin
+    { center title within range covered by x axis }
     X := (Options.XStartOffset + Options.XEnd) div 2;
     MyCenterTextOut(ACanvas, X, Y, StrText);
   end;
@@ -4605,28 +4607,21 @@ end;
 
 procedure TJvChart.MyYHeader(ACanvas: TCanvas; StrText: string);
 var
-  {ht,}                     // not used (ahuser)
   WD, Vert, Horiz: Integer;
 begin
   if Length(StrText) = 0 then
     Exit;
   ACanvas.Brush.Color := Color;
-  { !!warning: uses Win32 only font-handle stuff!!}
   ACanvas.Font.Assign(FOptions.AxisTitleFont);
-//  MyGraphVertFont(ACanvas); // Select Vertical Font Output.
   if Options.XStartOffset > 10 then
   begin
-    {ht := MyTextHeight(StrText); }// not used (ahuser)
     WD := ACanvas.TextWidth(StrText);
     //Vert := Options.YStartOffset + WD; // top-aligned
     Vert := Max(0, Options.YStartOffset + (Options.YEnd + WD) div 2);     // centered
     Horiz := 2;
-    // NOTE: Because of the logical font selected, this time TextOut goes vertical.
-    // If this doesn't go vertical, it may be because the font selection above failed.
     MyLeftTextOut(ACanvas, Horiz, Vert, StrText);
   end;
   MyAxisFont(ACanvas);
-  //   Self.MyLeftTextOut(Horiz, Vert+50, '*');
 end;