Re: [Lazarus] TAChart cannot zoom
El 21/10/14 a las 15:32, Werner Pamler escibió: You have added a ChartToolset and have assigned it to the chart. This deactivates the built-in toolset which is responsible for default zooming and panning. All you have to do is to add another ZoomDragTool to your toolset. To make it respond to dragging with the left mouse button set its Shift property to ssLeft, this is the standard behavior of the built-in zoom tool. If you need panning as well add a ZoomPanTool; by default, it becomes active with the right mouse button. But if you already use these Shift values in tools that are currently in your toolset, select something else, or add a key like ssCtrl, or ssShift (or both) - there are many possibilities. There are several tutorial which cover zooming in TAChart: * http://wiki.lazarus.freepascal.org/TAChart_Tutorial:_Chart_Tools, * http://wiki.lazarus.freepascal.org/TAChart_Tutorial:_Function_Series * http://wiki.lazarus.freepascal.org/TAChart_Tutorial:_ColorMapSeries,_Zooming Thanks Werner, I'll take a look at it. -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] TAChart cannot zoom
Hi, I don't know what I did, but I no longer can zoom in / zoom out (by dragging the mouse pointer) my chart. If I draw 1000 data points, they all are drawn into the chart, but I only want to display part of that data, for example 100 points. Here's the definition of my TAChart object (extracted from the lfm), I hope this help: object HAChart: TChart Left = 0 Height = 206 Top = 302 Width = 582 AxisList = item Grid.Color = 2434341 TickColor = clSilver Alignment = calRight Group = 1 Marks.Format = '%0.2f' Marks.Range.Max = 50 Marks.Style = smsCustom Minors = Title.LabelFont.Orientation = 900 end item Grid.Color = clGray Grid.Visible = False Intervals.MaxLength = 100 Intervals.MinLength = 30 Alignment = calBottom Marks.LabelFont.Orientation = 750 Marks.Format = '%2:s' Marks.Source = ListChartSource1 Marks.Style = smsLabel Minors = end BackColor = clBlack ExpandPercentage = 5 Extent.UseYMin = True Foot.Brush.Color = clBtnFace Foot.Font.Color = clBlue Frame.Color = clMedGray Title.Brush.Color = clBtnFace Title.Font.Color = clBlue Title.Text.Strings = ( 'TAChart' ) Toolset = ChartToolset1 OnAfterDrawBackWall = CandleStickChartAfterDrawBackWall OnAfterPaint = CandleStickChartAfterPaint Align = alClient Color = clBlack ParentColor = False ParentShowHint = False OnMouseMove = CandleStickChartMouseMove end Regards, -- Leonardo M. Ramébr Medical IT - Griensu S.A.br Av. Colón 636 - Piso 8 Of. Abr X5000EPT -- Córdobabr Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19br Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] TAChart cannot zoom
You have added a ChartToolset and have assigned it to the chart. This deactivates the built-in toolset which is responsible for default zooming and panning. All you have to do is to add another ZoomDragTool to your toolset. To make it respond to dragging with the left mouse button set its Shift property to ssLeft, this is the standard behavior of the built-in zoom tool. If you need panning as well add a ZoomPanTool; by default, it becomes active with the right mouse button. But if you already use these Shift values in tools that are currently in your toolset, select something else, or add a key like ssCtrl, or ssShift (or both) - there are many possibilities. There are several tutorial which cover zooming in TAChart: * http://wiki.lazarus.freepascal.org/TAChart_Tutorial:_Chart_Tools, * http://wiki.lazarus.freepascal.org/TAChart_Tutorial:_Function_Series * http://wiki.lazarus.freepascal.org/TAChart_Tutorial:_ColorMapSeries,_Zooming -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
