Re: [Lazarus] How TDBGrid works
En Sat, 07 May 2016 01:26:38 -0500, Martin Schreiber escribió: On Friday 06 May 2016 23:20:41 Aradeonas wrote: Thanks. So what is the best way to provide those 100 to 1100 record at least without Dataset calling AfterScroll event? I want to not make any event while scrolling my custom Grid so other connected DB controls change their values otherwise while Im scrolling my custom grid it will cause calling all connected DB controls to update their values. I hope it is more clear now. If the wanted record is in window of TDataLink.FirstRecord..FirstRecord + BufferCount - 1 you can temporarily switch the record which supplies the field data by setting TDatalink.ActiveRecord which doesn't fire any events. I assume you know that. ;-) See for example the MSEgui functions TGridDatalink.GetDisplay*Buffer(), BeginGridRow() and EndGridRow(). https://gitlab.com/mseide-msegui/mseide-msegui/raw/master/lib/common/db/msedbedit.pas Good luck by trying that while FirstRecord is "pointing" to record 1000 AND keeping RecNo at 1, maybe I misunderstood something. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] How TDBGrid works
En Fri, 06 May 2016 16:20:41 -0500, Aradeonas escribió: Thanks. So what is the best way to provide those 100 to 1100 record at least without Dataset calling >AfterScroll event? I want to not make any event while scrolling my custom Grid so other connected DB controls change >their values otherwise while Im scrolling my custom grid it will cause calling all connected DB >controls to update their values. I hope it is more clear now. Regards, Ara The easy one is probably to make two independent connections to the database. More elaborated solutions would be for example copy all said records to a memdataset and only connect that to a dbgrid, OR put the records in a non-dataset enabled component, like a TDrawGrid or TStringGrid, browsing that will not trigger any dataset events so other db controls will be unaffected, etc. The problem here is I think synchronizing stuff, you will have a funny time getting the updates to those records into the original source. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Flexible exporter for grid-like components
En Fri, 06 May 2016 15:51:41 -0500, Bart escribió: On 5/6/16, Werner Pamler wrote: ... About writing a patch: Don't you have svn commit (to LCL)? If so, just commit it, since nobody seems to object to the basic philosophy of your idea and implementation. Once committed, others will participate. +1 I would only suggest to keep the new units to a minimum, or if two units are needed name the grid related code as gridutils. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] How TDBGrid works
On Fri, 06 May 2016 15:07:18 -0500, Aradeonas wrote: Thanks, It seems I should explain better. For RecordCount you are right and it seems DBGrid doesn't know correct number either otherwise it should has a better scroll size. I want to do something like DBGrid and for that I want to get only a part of data for example record 1000 to 1100 and for that I can >set BufferCount to 100 but in this case I should navigate dataset to record 1000 to get these value but I prefer to not change RecNo >and use something like DataLink's ActiveRecord that changes record you want without changing RecNo of Dataset. You can't, there is no way using TDataset facilities. But anyway, changing ActiveRecord *should* change RecNo (provided that RecNo is reliable, it definitively is not if Dataset.IsSequenced=false OR dataset is filtered), if it's not then you found a bug. So if I have 1 Dataset that is fully load all 1500 record can I just print records from 1000 to 1100 without changing RecNo? Regards, Ara Jesus Reyes A.-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] How TDBGrid works
On Fri, 06 May 2016 13:44:46 -0500, Aradeonas wrote: Jesus,In that demo if I set BufferCount to 9 always get 9 records and even Query.RecordCount will be 9 even result is more. How can I get real count? I can get count before setting the link but is it the best way? DbGrid does not do that, and it doesn't have to. And the best way would depend, I guess, on the specific situation and what set of components are being used. How can I move or scroll link without moving Query? I want to scroll the grid and get new data without changing RecNo. In your example if I only got 9 record for example but I want for example 20th record. Not sure if I understand the part on "moving the query", but using TDataset derived components, and without using the basic MoveBy, Locate, first, last, next or prev you can't. Some dataset descendants may have some properties that help at some cost, for example y you set PacketRecords:=-1 then sqldb will load all the records and in this case RecordCount may be reliable, that is if dataset is not filtered (or that seems to indicate the relevant documentation). Some datasets may actually return a valid record count, probably TDbf is in this case. In any case without using the mentioned basic operations you can't select records. Regards, Ara Jesus Reyes A.-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] How TDBGrid works
En Thu, 05 May 2016 16:53:00 -0500, Aradeonas escribió: Hi, I'm curious about how TDBGrid now what to show in a column as value. I mean if I want to make a custom grid simple solution si going from first to last of TDataset and read columns value. I Browsed TDBGrid code lately but sadly I couldnt find how it works to get data without (as I think) browsing and changing TDataset records. Regards, Ara --http://www.fastmail.com - Send your email first class DBGrid does not read all records from first to last in order to show them, it only "specify" how many records it can show at the same time, it does this using a data link, TComponentDatalink, which is just a TDatalink with some custom dataset events for easy hooking, a data link is an intermediary between the grid and the dataset. So once the amount of records is set, the grid uses a datalink property: ActiveRecord in order to select which record from the ones it has reserved is the active record, then DbGrid maps this active record to the grid.Row property, the grid.Col property is mapped to a field index and using the standard dataset properties like Fields[i] or the field associated to a column which is again just taken from the dataset. The dataset is in charge all the time in keeping the reserved records up to date, the grid just shows the values it finds in the records. The starting point when the records are shown in DbGrid is procedure TCustomDBGrid.DrawAllRows; there the ActiveRecord is selected, DrawAllRows eventually ends calling individual cells for each row which does DefaultDrawCell and several others. In bug report http://bugs.freepascal.org/view.php?id=29764 I put an example of using TDatalink with multiple records and without DbGrid in a console program. Hope that helps. Jesus Reyes A.-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] EasyLazFreeType demo not working
En Sat, 09 Apr 2016 12:50:42 -0500, Ondrej Pokorny escribió: I test the EasyLazFreeType from lazutils package. I cannot make the example work (in directory examples\lazfreetype). The actual problem is in TFreeTypeFont.LoadFace line "familyItem := Collection.Family[FName];" where Collection is nil (the FontCollection global variable in EasyLazFreeType is nil). I downloaded all font files and placed them into the directory, they are correctly loaded. Can somebody help? :) Ondrej It runs here if I give to it three arguments in command line, example: lazfreetypetest.exe fonts\arial.ttf fonts\timesi.ttf fonts\verdana.ttf of course I created the directory fonts and put there the ttf files. If you don't run it this way, it tries to get the fonts from some kind of font manager but has that is not initialized and it fails, at least that is what I remember. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] FLC-PDF and LazReport
En Fri, 08 Apr 2016 15:10:47 -0500, Michael W. Vogel escribió: Hi, In a project I use LazReport and TlrCairoExport, cause I need implemented fonts and unicode support. Is there a plan to do it or anybody working on a wrapper for the new FPC PDF generator or is it even somehow possible today? Thank you Michl It's planned, I was testing fpPdf (or how will it be named?) with that in mind. But if somebody is in a hurry and wants to jump in, please say so. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] PDF generator, try 2
En Wed, 06 Apr 2016 13:14:49 -0500, Michael Van Canneyt escribió: On Wed, 6 Apr 2016, silvioprog wrote: On Wed, Apr 6, 2016 at 2:14 PM, Michael Van Canneyt wrote: [...] Why is this patch needed ? It should not be needed at all ? Sorry, I sent a wrong patch, please consider this new one in attachment. My patch just fix wrong chars in the generated PDF, eg, before the apply it, I got: I see. I don't understand why this patch fixes it for you. Because it means that somewhere a conversion happens that should not happen. Here it fixes the problem too. So I did a small investigation and this is what I found: The problem starts with this code: procedure TPDFPage.AddTextToLookupLists(AText: UTF8String); var str: UnicodeString; begin if AText = '' then Exit; str := UTF8ToUTF16(AText); Document.Fonts[FFontIndex].AddTextToMappingList(str); end; AText (a CP_UTF8 tagged string) is passed away to UTF8ToUTF16(AText) which expects a mere and mundane ansistring (to be used later as a pchar), the assembler window shows at what point the conversion is attempted: C:\ThePathTo\fpctrunk\packages\fcl-pdf\src\fppdf.pp:1583 str := UTF8ToUTF16(AText); 00435974 8b45fc mov-0x4(%ebp),%eax 00435977 8d4dc8 lea-0x38(%ebp),%ecx 0043597A 66ba mov$0x0,%dx 0043597E e80d3dfdff call 0x409690 00435983 8b45c8 mov-0x38(%ebp),%eax 00435986 8d55f4 lea-0xc(%ebp),%edx 00435989 e8a286 call 0x43e030 fpc_ansistr_to_ansistr converts AText from the given UTF8String to ansistring via RawbyteString. And it converts it to whatever DefaultSystemCodePage says it should. Now this is a problem because in Windows and according to the wiki this value is "The result of the GetACP OS call, which returns the Windows ANSI code page". In my case, and I guess Silvio's too, DefaultSystemCodePage=1252 not CP_UTF8, so in our case if AText is 'Greek: Γειά σου κόσμος' there will be problems converting that to CodePage=1252 which is solved by showing the "?" in the problematic characters the SetMultiByteConversionCodePage(CP_UTF8) call makes DefaultSystemCodePage=CP_UTF8 which matches UTF8String and so in fpc_ansistr_to_ansistr no conversion is performed. And so that is why SetMultiByteConversionCodePage(CP_UTF8) is needed when compiling in windows :) Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] PDF generator, try 2
On Wed, 06 Apr 2016 12:23:12 -0500, Graeme Geldenhuys wrote: On 2016-04-01 20:16, Jesus Reyes A. wrote: (it seems currently is not necessary because the matrix is auto-adjusted) and then ... P.WriteUTF8Text(15, 120, 'Languages: English: Hello, World!'); P.WriteUTF8Text(40, 130, 'Greek: %1B-FÃåéÜ óïõ êüóìïò'); P.WriteUTF8Text(40, 140, 'Polish: Witaj %1B-B¶wiecie'); P.WriteUTF8Text(40, 150, 'Portuguese: Ol%1B-Aá mundo'); Of course, before DoUnitConversion(p1); there should be a DoMatrixTransform(p1); etc. This change has been made and will be available in FPC repo shortly. Incidently, this drastically reduces the amount of application code and makes it much neater. Something I like. :) Regards, - Graeme - ;) Thanks. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] PDF generator, try 2
On Thu, 31 Mar 2016 18:16:18 -0600, Graeme Geldenhuys wrote: BTW, out of curiosity, in the sample there is code like this: lPt1 := P.Matrix.Transform(15, 120); P.WriteUTF8Text(lPt1.X, lPt1.Y, 'Languages: English: Hello, World!'); lPt1 := P.Matrix.Transform(40, 130); P.WriteUTF8Text(lPt1.X, lPt1.Y, 'Greek: -FÃåéÜ óïõ êüóìïò'); lPt1 := P.Matrix.Transform(40, 140); P.WriteUTF8Text(lPt1.X, lPt1.Y, 'Polish: Witaj -B¶wiecie'); lPt1 := P.Matrix.Transform(40, 150); P.WriteUTF8Text(lPt1.X, lPt1.Y, 'Portuguese: Ol-Aá mundo'); and then WriteUTF8Text and practically every other drawing function does something like this: p1.X := X; p1.Y := Y; DoUnitConversion(p1); The question is why isn't the transformation matrix "active"?, I mean the code above would be simply: p.SetTransformationMatrix(paramst o adjust the matrix) // or p.Matrix.SetTransformationMatrix(params to adjust the matrix); (it seems currently is not necessary because the matrix is auto-adjusted) and then ... P.WriteUTF8Text(15, 120, 'Languages: English: Hello, World!'); P.WriteUTF8Text(40, 130, 'Greek: -FÃåéÜ óïõ êüóìïò'); P.WriteUTF8Text(40, 140, 'Polish: Witaj -B¶wiecie'); P.WriteUTF8Text(40, 150, 'Portuguese: Ol-Aá mundo'); Of course, before DoUnitConversion(p1); there should be a DoMatrixTransform(p1); etc. One thought is that coordinates could be reused and in such case it might help but it doesn't seem to be a very strong reason, is interesting to know the real reason. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] PDF generator, try 2
En Thu, 31 Mar 2016 18:16:18 -0600, Graeme Geldenhuys escribió: On 2016-03-31 22:18, Jesus Reyes A. wrote: TPDFPage has some basic primitives for drawing: lines, rects, ellipses and images. I don't see a way to add our own (except by patches to fpPDF of course) // Add your custom page as follows P := TMyPDFPage.Create(Doc); Doc.Pages.Add(P); // global Page Object list lSection.AddPage(P); // which Section our page belongs too Yes that would suffice, thanks. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] PDF generator, try 2
On Thu, 31 Mar 2016 14:58:07 -0600, Michael Van Canneyt wrote: Synopse pdf is the reason I started fppdf. Synopse is heavily Windows centric, but otherwise quite capable. Fppdf is a young library (although it required many months of work) I am sure many improvements will be made as the reporting library develops. A canvas descendant that renders to pdf is planned, but not very high priority. Patches and suggestions are definitely welcome. The library is intended for production, so quality is important. Michael. TPDFPage has some basic primitives for drawing: lines, rects, ellipses and images. I don't see a way to add our own (except by patches to fpPDF of course) but it would be nice to have some mechanism for extension, for example if a TPdfPageClass=class of TPdfClass is defined, then there could be a TPdfPages.AddPage overloaded with an extra argument PageClass:TPdfPageClass, and this could be used for implementing additional primitives? what you hink? Regards. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Merge request
On Thu, 31 Mar 2016 11:45:48 -0600, Ondrej Pokorny wrote: On 31.03.2016 12:59, Gabor Boros wrote: Please merge 52063, 52029, 51980, 51918, 51914 revisions (grid fixes) from trunk to fixes_1_6. Please add them into http://wiki.freepascal.org/Lazarus_1.6_fixes_branch section Merge requests/Submitted by others. Ondrej I marked some reports with a LazTarget 1.6.2 those should be merged to 1.6.2 as their fixes have high probability to be harmless or they fix regressions, the ones marked with LazTarget 1.8 should be thoroughly tested in 1.7.0 before they can be merged. Well, I know this can't be objectively evaluated so give them a couple of weeks in the wild at least. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Ann: class code creation
On Tue, 08 Mar 2016 08:01:10 -0600, Ondrej Pokorny wrote: On 08.03.2016 14:15, Michael Van Canneyt wrote: Well. You take yourself as a reference I think. I don't think Jesus' idea wasn't really serious :) Partly... I was aware there is no support in Lazarus for something like this. Some contra's: 1.) Lazarus IDE doesn't have an API for that. I don't think anybody has time/will to make it - it could be pretty/unnecessarily complex to support it in every IDE dialog. 2.) No Lazarus function is called this way. It doesn't make sense if Code Creation is the only function taking advantage of it. 3.) I don't know any desktop application that works like this (except the TotalCommander mouse right click). (1) is already a reason big enough for me. Indeed. Jesus Reyes A -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Ann: class code creation
En Mon, 07 Mar 2016 21:21:03 -0600, Ondrej Pokorny escribió: I don't think this is possible or reasonable. On 08.03.2016 2:39, Dmitry Boyarintsev wrote: procedure TClass.Test(y: integer); begin x private|:= y; end; One problem is that CodeTools need valid syntax in front of y to evaluate the type of y correctly (the type that x gets). Eventually people will know the dialog well, so selecting the needed item in the dialog might be painful. Then we should do some kind of fast select possibility in the dialog. From my point of view, typing "x private" is more paintful than writing just "x" and then selecting the section with key up/down from the dialog. If you add only private variables, you can make it the default choice (in Options->Code tools->Code creation) and then the dialog doesn't pop-up. Ondrej Some crazy idea: Detect the shortcut being pressed and then start a timer, if the user releases the shortcut before the timer triggers, then the user wants to use the previous selection (in this case the private section for example) and then no dialog is needed, if there is no previous selection or the timer triggers then show the dialog. The timer interval would need to be a setting so it can be adjusted by the end user. :) Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] PDF generator
En Sat, 05 Mar 2016 11:27:24 -0600, Michael Van Canneyt escribió: Hi, I have committed a PDF generator to FPC Subversion: fcl-pdf. Why a new pascal PDF generator ? Mainly because the existing ones written in Object Pascal suffer from several disadvantages: - Font support usually incomplete or downright buggy. - Dependency on a GUI (LCL, VCL, Windows). The latter is important because the PDFs must be generated on a headless (no display) webserver. So, the fcl-pdf package contains a PDF generating unit fppdf that does not depend on any external libraries or GUI system. The PDF generator has the following features: - Support for basic shapes. - Support for basic line styles. - Dictionary support. - Multi-page PDF. - Image support. - TTF Font support. - Font embedding. - Unicode font support. - Stream Compression. - Image embedding. - Several paper types. - Portrait/Landscape. - Support for multiple measurement units. - Rotation matrix system. - PDF creator information. - The generated PDF passes several PDF validators. The library is based on a library that came with FPGUI, with a feature set which came closest to what I desired. It was completed for the company I work for by Graeme Geldenhuys, and is heavily unit tested. It is not yet feature-complete, but the above should be ample for most applications. In the near future, I expect to commit a reporting engine which, likewise, does not need a GUI (but can use one) and uses the PDF generator as one possible backend. Todo: - Implement TFPCustomCanvas descendent (TPDFCanvas) that draws on a PDF. (should allow easy integration in LCL) - Partial embedding of (unicode) fonts (only used glyphs) for smaller PDFs. - On windows (possibly mac), allow to use native font mechanisms for extracting info from TTF files. - Reduce memory usage by streaming finished pages to file. Optionally: - PDF Forms ? - Archive format ? - Signatures ? Enjoy, I would welcome additional tests/demos, suggestions, bugreports, improvements or patches. Michael. Great, thank you! Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Project Groups error - "Invalid floating point operation"
En Thu, 25 Feb 2016 09:28:47 -0600, Graeme Geldenhuys escribió: On 2016-02-25 15:13, Mattias Gaertner wrote: Yes. There seems to be a bug in the IDE menu merging code. It happens only with some combinations of installed packages. Thanks. Reading old messages from Michael van Canneyt I tried what he suggested, but uninstalling the DataDict packages, but that meant I get an "Exception" error at start. So a slight change. I then, as a test, backed up my ~/.lazarus/ profile directory and started a completely new one. With the last executable giving me the "Exception" message, using a brand new profile, the IDE started up without problems. So it seems like configuration settings could also play a roll in this issue. I'll step by step add my custom configuration settings back in and see what happens. Regards, - Graeme - The combination of packages that triggers this problem is lazdatadict+lazprojectgroups, the problem appears only when the most recent project groups list is empty (this is when the MRPG submenu is hidden). The problem is an inconsistency on the counts of menu items between some internal list and the physical "project" menu items. The issue has already a report: http://bugs.freepascal.org/view.php?id=29675 For myself I fixed the problem here but it has a side effect that prevents me committing the patch, the main menu appears inverted: Help, Windows, Tools, etc... Search, Edit, Files. :) Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] StringGrid1.LoadFromCSVFile problem
On Thu, 22 Oct 2015 12:13:17 -0500, fecske fecske wrote: I like to use the StringGrid1.LoadFromCSVFile() function. It works but also randomly set to a last line of strange characters .. In the CSV file normail view are not these characters. I checked csv files in hex viewer and are not these >characters. I did a test, I wrote a Delphi code in a delphi IDE with unique function and stringgrid, and are not these >characters.too. I use the same csv files. What's wrong in the LoadFromCSVFile() function? Please help me? What Lazarus version/revision do you use?. Please attach a sample csv file. Jesus Reyes A.-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] laz report crash IDE on startup with builded Option -dDisableWrapperFunctions
En Sun, 20 Sep 2015 10:43:30 -0500, FreeMan escribió: Hi Jesus, I get this error, not while make or building lazarus in terminal. In terminal, download svn lazarus, then make, then run lazbuild, every think is normal, when I try run IDE, then crash. I sended bash script, I run this script then rebuild lazarus from terminal, now working normal. I'm not test other os. Thank you I always had the .sh file, I probably added it locally and forgot to commit it. It's done in r49855. Anyway there seems to be a compiler error under OSX that sometimes it fails to link in the .res files, it sometimes happen here when I modify LazReport (when I forgot to clean it first) and recompile Lazarus. I was not able to reproduce it in a simpler project so I have not reported it. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] LazReport bug?
En Mon, 07 Sep 2015 14:25:52 -0500, Craig Goodyear escribió: I have recently upgraded from Lazarus 1.2 to Lazarus 1.4.2. Compiling a program with version 1.4.2 breaks a report written with version 1.2. One of field names in the sql statement that LazReport uses is name. With the new version, the name of the object placed on the report is shown instead of the value of the name field from the sql statement. Has the new version of LazReport reserved the word name to refer to the name of report objects, or is this a bug in LazReport? Yes. At some point, the published properties of objects started to become available in scripts. It appears that 1.2 version already included that functionality, probably there were some bugs that prevented resolving the 'name' property properly in 1.2 but was fixed later in the 1.4 version. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Printing BitMap on OSX crashes
En Fri, 31 Jul 2015 21:09:51 -0500, Martin Grajcar escribió: Hi Jesus, On Wed, Jul 1, 2015 at 10:52 PM, Jesus Reyes A. wrote: On Tue, 30 Jun 2015 05:55:43 -0500, Martin Grajcar wrote: Hello, apologies for reposting, but I can't see in the archives (and have received no answer). Are attachments forbidden here? I'm given you a link instead: https://dl.dropboxusercontent.com/u/4971686/bitmap-crash.demo.zip Regards, Martin. On Thu, Jun 25, 2015 at 10:57 AM, Martin Grajcar wrote: My trivial Lazarus 1.4 application (and also our real application) crash whenever it prints a TBitMap on MAC. It happens in _platform_memmove$VARIANT>>>>$sse4 it tries to execute MOVDQA and I thought it was an alignment problem, but it isn't. I'm attaching my rather confusing demo. It does nothing but printing and seems to work fine on Linux, but crashes on OSX. Commenting out the StretchDraw >>>>prevents the crash. I have currently no access to the MAC, so I apologize for not including a minimal example. I can reproduce it, and although the AV is easily fixed it seems printing bitmaps under Mac OS X it currently broken (loading a bitmap from a file doesn't produce AV >>but it not working anyway). I'm sure it used to work because I have PDF file generated using TPrinter and CUPS-PDF at some point. I haven't a chance to try it yet. Just in case it's non exactly trivial, how can the AV be fixed? I was only accessing the MAC over a bad connection, which made pretty >everything complicated. I'm also sure it used to work. Please submit a report so it wont be forgotten. http://mantis.freepascal.org/view.php?id=28455 Regards, Martin. The problem occurs because the bitmap is being freed before Printer.EndDoc. It is at this point that the bitmap data is used, but because it was already freed an AV occurs. I have actually fixed the problem, but in my current implementation resources are only be freed at program end. Which is not good if somebody are printing a lot. So I have not committed the fix, I have another plan and will try again soon. In the mean time, the workaround it's easy (this is not the fix I mentioned before which would patch the LCL+Printer support). Just create the bitmap before Print.BeginDoc and free it after Print.EndDoc. That should work. Jesus Reyes A. -- Usando el cliente de correo de Opera: http://www.opera.com/mail/-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] lazreport: how to use global report variables
En Wed, 01 Jul 2015 17:52:57 -0500, Graeme Geldenhuys escribió: On 2015-07-01 21:47, Jesus Reyes A. wrote: Those are not global variables. They are report variables. In the context of a report, they are the same thing to me. You define a variable via the Report GUI Designer (I still don't know how to do it from code), that variable is then available for use anywhere in your report. ie: gloabal ;-) :) Yes, you can consider them as global if you so desire. However they exists only in your report, where they were defined. The frVariables list however can be used by n-number of reports in your application. This is why I think of them as "global" I think the easier way to modify global variables is through the frVariables object ej. frVariables['HideKlas'] := 1; I'll take a look at that, thanks. It seems possible to have report and global variables named the same, however I have not investigated who takes precedence, I would guess report variables are found first, but I'm not sure TBH. But in LazReport this TStrings list functionality is not used. Huh? You lot me there. So if they are not used, why do those properties still exist in TfrReport? They are not specific to LazReport, this is basic functionality of every TStringList, just because they descend from TStrings. Values and Names are public properties of TStrings, how can one hide those properties in a instance of TStringList?, you can't, so LazReport also can't. :D I was not able to find a Report.Scripts property or field, maybe you mean Report.Script? Sorry, it was a typo. I meant Report.Script. As far as I understand, LazReport is based on some open source version of FastReport. Due to the lack of documentation (or updated documentation) of LazReport, I looked at the documentation for FastReport and tried to use some if what it suggests. But it seems much of it doesn't translate to LazReport. Yes, probably, however one could find that they have also many things on common. Here is the URL of FastReport I looked at. https://www.fast-report.com/documentation/ProgMan/index.html?adding_a_variable.htm I worked through the whole "Working with a list of variables" section. frxReport1.Variables['My Variable 1'] := 10; and likewise Variable := frxReport1.Variables.Add and Variable := frxReport1.Variables.Insert(1); Wouldn't work on LazReport as here frxReport1.Variables is just a mere mortal TStringList which already have a default property: Strings[] indexed by integer, This part is in LazReport a little mess :), I think FastReport guys noted this and they fixed the situation in FastReport. Regards, - Graeme - -- Usando el cliente de correo de Opera: http://www.opera.com/mail/ -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Where to find latest documentation on LazReport
En Tue, 30 Jun 2015 07:51:05 -0500, Graeme Geldenhuys escribió: Hi, I've found the fr_eng.pdf included with Lazarus, but it is dated 1999 (in the pdf text). I'm hoping LazReport has improved since then , and newer documentation is available somewhere. Any links would be much appreciated. Or is that fr_eng.pdf really the latest documentation? Regards, - Graeme - It is. Some information is being added to the wiki: http://wiki.lazarus.freepascal.org/LazReport_Documentation http://wiki.lazarus.freepascal.org/LazReport_Tutorial It's an slow moving attempt :( Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Printing BitMap on OSX crashes
On Tue, 30 Jun 2015 05:55:43 -0500, Martin Grajcar wrote: Hello, apologies for reposting, but I can't see in the archives (and have received no answer). Are attachments forbidden here? I'm given you a link instead: https://dl.dropboxusercontent.com/u/4971686/bitmap-crash.demo.zip Regards, Martin. On Thu, Jun 25, 2015 at 10:57 AM, Martin Grajcar wrote: My trivial Lazarus 1.4 application (and also our real application) crash whenever it prints a TBitMap on MAC. It >>happens in _platform_memmove$VARIANT$sse4 it tries to execute MOVDQA and I thought it was an alignment problem, but it isn't. I'm attaching my rather confusing demo. It does nothing but printing and seems to work fine on Linux, but crashes >>on OSX. Commenting out the StretchDraw prevents the crash. I have currently no access to the MAC, so I apologize >>for not including a minimal example. I can reproduce it, and although the AV is easily fixed it seems printing bitmaps under Mac OS X it currently broken (loading a bitmap from a file doesn't produce AV but it not working anyway). I'm sure it used to work because I have PDF file generated using TPrinter and CUPS-PDF at some point. Please submit a report so it wont be forgotten. Jesus Reyes A.-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] lazreport: how to use global report variables
On Tue, 30 Jun 2015 10:35:54 -0500, Graeme Geldenhuys
wrote:
On 2015-06-30 14:03, Graeme Geldenhuys wrote:
I've used File -> Variable List to define a new variable (just the
name).
Digging deeper into the LazReport code, I finally found the solution.
Even though you setup a variable, you must not refer to it via the
Scripts.Values[] or Variables.Values[] properties. Go figure!
Instead you use the Values.FindVariables() method.
FRPrint.Values.FindVariable('HideKlas').Field := '1';
Those are not global variables. They are report variables.
I think the easier way to modify global variables is through the
frVariables object
ej.
frVariables['HideKlas'] := 1;
For more details of what I've done, see the Lazarus Forum post.
http://forum.lazarus.freepascal.org/index.php/topic,28922.0.html
Now this begs the question... What the hell does Scripts.Values[] and
Variables.Values[] actually do?
They do the same thing they do for any TStrings list, ie. Assign values to
supposedly existing "names" , for they to work you have to have a list
like:
name1=value1
name2=value2
etc.
But in LazReport this TStrings list functionality is not used.
Report.Variables holds the list of variables and variables categories that
you have defined in the Report (usually using the report designer gui).
Variables categories can only be used as distinctive tags for a group of
variables, and I guess that is the reason why there are a Values object
too, which btw has a list of only variables.
I was not able to find a Report.Scripts property or field, maybe you mean
Report.Script? in that case supposedly it holds the script to be run as
"BeforePrint" script.
Jesus Reyes A.
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Re: [Lazarus] PowerPDF PDF level
On Tue, 23 Jun 2015 04:57:44 -0500, Marc Santhoff wrote: Hi, can someone please tell me what version of PDF documents PowerPDF supports? The docs in question are mostly 1.4, some rare 1.5, but who knows. TIA, Marc PowerPDF writes 1.2 version documents. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Dropdown in stringgrid ?
En Mon, 08 Jun 2015 06:03:28 -0500, Koenraad Lelong escribió: So you want the picklist only in the first row. Then use something like: // use grid's OnSelectEditor procedure TForm1.StringGrid1SelectEditor(Sender: TObject; aCol, aRow: Integer; var Editor: TWinControl); begin if aRow=StringGrid1.fixedRows then begin Editor := StringGrid1.EditorByStyle(cbsPickList); // fill the picklist with field list TPickListCellEditor(Editor).Items.CommaText := 'Field1,Field2,Field3,etc'; // or TPickListCellEditor(Editor).Items.Assign(FieldList) // or etc end else Editor := nil; // readonly the rest of rows (or select another editor) end; Hi, It's almost what I want. Your code makes the second row behave like a picklist (1 fixed row : row #0 is fixed), so I subtracted 1 from StringGrid1.fixedRows but no luck ;-)I tried a few things, but I can't let the cells of the fixed row to behave like a picklist. Am I still missing something ? Anyway, thanks very much already. Can't you set FixedRows:=0?, if you do that what problems do you see in your program? Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Dropdown in stringgrid ?
En Fri, 05 Jun 2015 05:55:51 -0500, Koenraad Lelong escribió: Op 03-06-15 om 01:19 schreef Jesus Reyes A.: In the grid such combobox is called a picklist. 1. Select the grid 2. In the Object Inspector select the columns property and click the "..." button. 3. Add some custom columns 4. Select the column where you wish to add a pick list 5. In the Object Inspector change the ButtonStyle to cbsPickList 6. In the Object Inspector select the PickList property and click the "..." button. 7. Add all options you want to this list. 8. make sure the grid is editable. Thanks, just tried this, but it's not what I need. Like I said, I want to import a csv-file. Then, using the first row, I use a picklist of fieldnames to identify which column of the csv needs to go to which field in the database. Maybe this clarifies it better : --- | Field2 | Field1 || Field3 ||| <--- picklist (Field1, Field2, Field3, blank) --- |Col0Row1|Col1Row1|Col2Row1|Col3Row1|Col4Row1|Col5Row1| |Col0Row2|Col1Row2|Col2Row2|Col3Row2|Col4Row2|Col5Row2| etc. This means column0 should got to Field2 of the database, column1 should got to Field1 of the database and column3 should got to Field3 of the database. The rest of the columns are not needed in the database. Koenraad. So you want the picklist only in the first row. Then use something like: // use grid's OnSelectEditor procedure TForm1.StringGrid1SelectEditor(Sender: TObject; aCol, aRow: Integer; var Editor: TWinControl); begin if aRow=StringGrid1.fixedRows then begin Editor := StringGrid1.EditorByStyle(cbsPickList); // fill the picklist with field list TPickListCellEditor(Editor).Items.CommaText := 'Field1,Field2,Field3,etc'; // or TPickListCellEditor(Editor).Items.Assign(FieldList) // or etc end else Editor := nil; // readonly the rest of rows (or select another editor) end; // use grid's OnPickListSelect procedure TForm1.StringGrid1PickListSelect(Sender: TObject); begin // make something with picklist itemindex, the current grid column is given by StringGrid1.Col end; Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Dropdown in stringgrid ?
En Tue, 02 Jun 2015 06:01:05 -0500, Koenraad Lelong escribió: Hi, I'm trying to make a "universal importer". I have a database I want to populate/modify with data from a csv-file. The column order of the csv-file cannot be imposed. So I have to have a way to say which column of the csv-file is which field in the database. I have a commercial application that has something like a stringgrid but the first row has dropdown's with possible field-names. I was trying to mimic this, more or less, but had issues. Is this possible someway ? Any hints ? Koenraad In the grid such combobox is called a picklist. 1. Select the grid 2. In the Object Inspector select the columns property and click the "..." button. 3. Add some custom columns 4. Select the column where you wish to add a pick list 5. In the Object Inspector change the ButtonStyle to cbsPickList 6. In the Object Inspector select the PickList property and click the "..." button. 7. Add all options you want to this list. 8. make sure the grid is editable. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] LazReport Questions
En Mon, 25 May 2015 21:39:41 -0500, steveg escribió: Thank you Michael. I have then following problems currently - 1: I am placing a subreport in a Group footer (to run a charges query for each client in group break) It would appear that the subreport is run 'after' accessing all other fields in the footer, no matter what it is named, or where it is placed. I would like to be able to specify when it runs in relation to the other fields (to be able to use it for further calculations). Is this at all possible ? Is not possible in current implementation. Name or Position (x,y) have no effect, however "z-order" (relative position between objects) might help. It even seems that as soon a subreport is found any remaining object is skipped. 2: All objects seem to be accessed in the order they are saved in the lrf file, not by Name (alpha) or position - this makes it problematic when using them for calculations. Is it possible to have the running report fill in the fields by alpha name position instead ? Not in the current implementation. 3: Deleting an object from a report (memo / band / subreport) will often cause the program to abort. I haven't yet been able to conclude precisely what its related to, but still watching. Does anybody else have this issue ? I haven't seen it. Feel free to submit a bug report with a sample project. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TStringGrid.OnSelectEditor
En Wed, 13 May 2015 19:48:56 -0500, Vojtěch Čihák escribió: Hi, I got troubles with TStringGrid. When I set: goAlwaysShowEditor:=False; goEditing:=True; OnSelectEditor is triggered always when I select any cell, even if editor (built-in or custom) is not shown yet. When I click the cell for the second time, editor is shown and OnSelectEditor is triggered again. I guess it's a bug, after all there are other events for selecting cell (OnSelection, OnSelectCell). Is it by design or should I report? Thanks, V. P.S.: When options are: goAlwaysShowEditor:=True; goEditing:=True; OR goAlwaysShowEditor:=False; goEditing:=False; OnSelectEditor works as expected. I think is not a bug (at least that kind of bug that is against the documentation). But I see no reason why it should work the way it does now, please check r49016 Jesus Reyes A.-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Processing TCoolBar child by IDE
En Mon, 11 May 2015 16:25:50 -0500, Juha Manninen escribió: On Tue, May 12, 2015 at 12:21 AM, Jesus Reyes wrote: TBH, I don't know if they are "completly" broken, One more thought: There is an installation package for Mac OSX, built by Mattias. He was able to compile generics on Mac. Can it depend on compiler options? Juha I tried with the released version and it works So it must be some flag that makes the difference. The question now is if one should trust 2.6.4 when compiling generics code. IMO It is still confusing ... to use or not use... At least the weird situation of how was possible to have a release with this compiler and the current code in Lazarus is solved. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Processing TCoolBar child by IDE
En Mon, 11 May 2015 16:25:50 -0500, Juha Manninen escribió: On Tue, May 12, 2015 at 12:21 AM, Jesus Reyes wrote: TBH, I don't know if they are "completly" broken, One more thought: There is an installation package for Mac OSX, built by Mattias. He was able to compile generics on Mac. Can it depend on compiler options? Juha I tried with the released FPC version 2.6.4 and it works :P So it must be some flag that makes the difference. The question now is if one should trust 2.6.4 when compiling generics code. IMO It is still confusing ... to use or not use... At least the weird situation of how was possible to have a release with this compiler and the current code in Lazarus is solved. Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Strange behavior of AutoSizeColumn in StringGrid
On Wed, 06 May 2015 04:15:43 -0500, Valdas Jankūnas wrote: 2015.05.06 01:52, Jesus Reyes rašė: If that is the intended behaviour (Multiline title property is a contribution, Werner?) then it's OK to me, in that case please try the attached patch and write back your results, here I tested under Windows and it seems to work fine. tested on Linux: AutosizeColumn[s] stops working. But if I add line "aRect := Rect(0, 0, High(integer), High(integer));" before "DrawText..." then it works, also bug is gone. I'm sorry for my previous two messages. I hope this time it will go ok. the following is what I replied in both cases. - - - - - - - - - - Weird, now I have tested in both Linux and Mac and it works fine without your change.. Anybody else? Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] DB aware components
En Mon, 16 Sep 2013 04:12:31 -0500, Mattias Gaertner escribió: Maybe a result of Juha's change: http://wiki.freepascal.org/Lazarus_1.2.0_release_notes#TComponentPropertyEditor_behavior_was_changed Mattias Strange, is this the way it works in Delphi? Why not invent something specifically for ActiveControl instead? Jesus Reyes A. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
