Re: [Lazarus] Lazreport variables
El 11/05/2020 a las 16:12, Graeme Geldenhuys via lazarus escribió:
On 03/05/2020 5:03 pm, Santiago A. via lazarus wrote:
I want to write a report where even lines are written with no background
and odd lines with a light gray background.
Have you considered using the newer FPReport (aka fcl-report) included
with FPC? There is a report designer for Lazarus too. It is super simple
to implement the alternating colors that you required. Take a look at
the fcl-report/demos/ directory and look at the "rptexpressions.pas"
unit. All you need to do is assign the alternating colors in the
DoBeforePrint() event handler.
eg:
procedure TExpressionsDemo.DoBeforePrint(Sender: TFPReportElement);
begin
With rpt.Variables.FindVariable('isEven') do
AsBoolean:=Not AsBoolean;
if rpt.Variables.FindVariable('isEven').AsBoolean then
Sender.Frame.BackgroundColor := clLtGray
else
Sender.Frame.BackgroundColor := clWhite;
end;
Regards,
Graeme
Yes, in fact I have solved it with a similar way using events in pascal.
Nevertheless, that is not the question. Do variables work in LazReport
or not? if they do, how?
I have hidden a band and a few tweaks using the reports scripts, that
means that I have divided the logic of the report in the scripts in lrf
file and in events in the pascal source. If I can't trust that scripts
work, I will move everything to pascal and let the report just for
basic graphic design with no script.
Using only pascal events is not the best solution, because I could, for
example, change the design of alternate colors of the band to a line
division without touching the pascal code and having to generate a new
executable.
I still hope that I have misunderstood something about variables, or at
least it is known bug.
--
Saludos
Santiago A.
--
___
lazarus mailing list
lazarus@lists.lazarus-ide.org
https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Lazreport variables
On 03/05/2020 5:03 pm, Santiago A. via lazarus wrote:
> I want to write a report where even lines are written with no background
> and odd lines with a light gray background.
Have you considered using the newer FPReport (aka fcl-report) included
with FPC? There is a report designer for Lazarus too. It is super simple
to implement the alternating colors that you required. Take a look at
the fcl-report/demos/ directory and look at the "rptexpressions.pas"
unit. All you need to do is assign the alternating colors in the
DoBeforePrint() event handler.
eg:
procedure TExpressionsDemo.DoBeforePrint(Sender: TFPReportElement);
begin
With rpt.Variables.FindVariable('isEven') do
AsBoolean:=Not AsBoolean;
if rpt.Variables.FindVariable('isEven').AsBoolean then
Sender.Frame.BackgroundColor := clLtGray
else
Sender.Frame.BackgroundColor := clWhite;
end;
Regards,
Graeme
--
fpGUI Toolkit - a cross-platform GUI toolkit using Free Pascal
http://fpgui.sourceforge.net/
My public PGP key: http://tinyurl.com/graeme-pgp
--
___
lazarus mailing list
lazarus@lists.lazarus-ide.org
https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Lazreport variables
Define variable in report header bandОтправлено из мобильной Яндекс.Почты: http://m.ya.ru/ymail11:09, 7 мая 2020 г., "Santiago A. via lazarus" : El 07/05/2020 a las 05:37, Jesus Reyes A. via lazarus escribió: En Sun, 03 May 2020 11:03:12 -0500, Santiago A. via lazarus escribió: Hi: I want to write a report where even lines are written with no background and odd lines with a light gray background. The idea is an memo (MemoBackground) in the background of the masterData Band that is gray and I set visible or invisible, according with the line. I have created a report variable "LineCounter" In the ColumnHeader band (the report has two columns) I have a Script Begin LineCounter:=0; end; In the GorupHeader header I have this script Begin LineCounter:=0; end; In the masterData band Script: begin LineCounter:=LineCounter+1; MemoBackground.visible:=(LineCounter mod 2 = 0); end Probably the easiest way of doing what you want is using an empty memo object sized to the extent you want for the background row, any other field on the band should be 'above' the background memo (you can just select the background memo and press the 'send to bottom' tool button), any field on the band should be transparent color. Then edit the background memo and use this script: if [LINE#] mod 2 = 0 then FillColor := clGray else FillColor := clWhite; As written and because the variable Line# starts at 1, the first line will be white. You can apply this method to any existing report as it doesn't require modifying the source code of your application. Regards. Jesus Reyes A. Ok I'll try Nevertheless, that doesn't answer my question: How to use "not-predefined" variables. How can I access to the variable lineCounter? -- Saludos Santiago A. -- ___lazarus mailing listlazarus@lists.lazarus-ide.orghttps://lists.lazarus-ide.org/listinfo/lazarus -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Lazreport variables
El 07/05/2020 a las 05:37, Jesus Reyes A. via lazarus escribió: En Sun, 03 May 2020 11:03:12 -0500, Santiago A. via lazarus escribió: Hi: I want to write a report where even lines are written with no background and odd lines with a light gray background. The idea is an memo (MemoBackground) in the background of the masterData Band that is gray and I set visible or invisible, according with the line. I have created a report variable "LineCounter" In the ColumnHeader band (the report has two columns) I have a Script Begin LineCounter:=0; end; In the GorupHeader header I have this script Begin LineCounter:=0; end; In the masterData band Script: begin LineCounter:=LineCounter+1; MemoBackground.visible:=(LineCounter mod 2 = 0); end Probably the easiest way of doing what you want is using an empty memo object sized to the extent you want for the background row, any other field on the band should be 'above' the background memo (you can just select the background memo and press the 'send to bottom' tool button), any field on the band should be transparent color. Then edit the background memo and use this script: if [LINE#] mod 2 = 0 then FillColor := clGray else FillColor := clWhite; As written and because the variable Line# starts at 1, the first line will be white. You can apply this method to any existing report as it doesn't require modifying the source code of your application. Regards. Jesus Reyes A. Ok I'll try Nevertheless, that doesn't answer my question: How to use "not-predefined" variables. How can I access to the variable lineCounter? -- Saludos Santiago A. -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Lazreport variables
En Sun, 03 May 2020 11:03:12 -0500, Santiago A. via lazarus escribió: Hi: I want to write a report where even lines are written with no background and odd lines with a light >gray background. The idea is an memo (MemoBackground) in the background of the masterData Band that is gray and I >set visible or invisible, according with the line. I have created a report variable "LineCounter" In the ColumnHeader band (the report has two columns) I have a Script Begin LineCounter:=0; end; In the GorupHeader header I have this script Begin LineCounter:=0; end; In the masterData band Script: begin LineCounter:=LineCounter+1; MemoBackground.visible:=(LineCounter mod 2 = 0); end Probably the easiest way of doing what you want is using an empty memo object sized to the extent you want for the background row, any other field on the band should be 'above' the background memo (you can just select the background memo and press the 'send to bottom' tool button), any field on the band should be transparent color. Then edit the background memo and use this script: if [LINE#] mod 2 = 0 then FillColor := clGray else FillColor := clWhite; As written and because the variable Line# starts at 1, the first line will be white. You can apply this method to any existing report as it doesn't require modifying the source code of your application. Regards. Jesus Reyes A.-- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Lazreport variables
On Sun, May 3, 2020 at 7:33 PM Santiago A. via lazarus wrote: > TStringGrid? It is a report using LazReport, What has TSringGrid to do > with LazReport? I have no experience with LazReport. You wrote you would make the report in a memo, I assumed you could do that in a TSTringGrid as well. It seems, you can not? > What is OI? The Object Inspector. -- Bart -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Lazreport variables
El 03/05/2020 a las 18:04, Bart via lazarus escribió: On Sun, May 3, 2020 at 6:03 PM Santiago A. via lazarus wrote: I want to write a report where even lines are written with no background and odd lines with a light gray background. A little bit out of the box thinking :-) You could add the lines to a TStringGrid (ColCount := 1) and set the color for the alternating row in OI. Sorry I haven't understand anything ;-) TStringGrid? It is a report using LazReport, What has TSringGrid to do with LazReport? What is OI? -- Saludos Santiago A. -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Lazreport variables
On Sun, May 3, 2020 at 6:03 PM Santiago A. via lazarus wrote: > I want to write a report where even lines are written with no background and > odd lines with a light gray background. A little bit out of the box thinking :-) You could add the lines to a TStringGrid (ColCount := 1) and set the color for the alternating row in OI. -- Bart -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
[Lazarus] Lazreport variables
Hi: I want to write a report where even lines are written with no background and odd lines with a light gray background. The idea is an memo (MemoBackground) in the background of the masterData Band that is gray and I set visible or invisible, according with the line. I have created a report variable "LineCounter" In the ColumnHeader band (the report has two columns) I have a Script Begin LineCounter:=0; end; In the GorupHeader header I have this script Begin LineCounter:=0; end; In the masterData band Script: begin LineCounter:=LineCounter+1; MemoBackground.visible:=(LineCounter mod 2 = 0); end When I prepare the report, I get "Invalid Variant Type Cast" After debugging a little, I have found LineCounter is undefined when it is on the right side of assignment. When It executes LineCounter:=0; it assigns to a frVariables, a global public var in Unit LR_Class. But when it tries to get its value it searches en a field "values" of TfrReport. I've also tried LineCounter:=[LineCounter]+1; With brackets, the same result. (Not sure what brackets are for in scripts) Any hint? What am I missing? -- Saludos Santiago A. -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
