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Everything posted by Attila Kovacs
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Array size increase with generics
Attila Kovacs replied to Mike Torrettinni's topic in Algorithms, Data Structures and Class Design
I'd prefer Lines.Add(Data); -
@dummzeuch how do you return the date without the apostrophes? Just cutting them off by yourself? Edit: hmmm no, because you have the double value at the bottom. "Also, for now, I won’t provide source code for them. I haven’t yet decided whether I want to make them yet another open source project or maybe a commercial product." Did you decide in the last ~3 years? 😉
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Thx Ian. I'm afraid it's rather the lack of a touchmanager in VCL. At least I could not find any info how to fire it up, if it even possible. Maybe somebody has an idea.
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You have to declare OnChangeSigNo first, but from now you have to do some work too 😉 OnChangeSigNo = TNotifyEvent which means you add a procedure to your form like: procedure TForm1.OnChangeSigNo (Sender: TObject); begin end; Please let me know if it works over Thinfinity. @Sherlock could you rename the topic that others can find it too?
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You should forget imgSigno and pass "Image1" in the Create(). imgSigno is not instantiated, its just declared. Delete it. fSigno := TSigno.Create(Image1);
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Just created a new app and works fine for me. You have to debug. Is it a VCL app? The TImage is on the Form not just declared somewhere?
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Hi Ian, I'm not sure if it helps as I don't know Thinfinity, but this is the unit I made for capturing signatures. Just create the class with a TImage in the construcor parameter: imgSigno: TImage; .... FSigno := TSigno.Create(imgSigno); FSigno.OnChange := OnChangeSigno; On the OnChange you can do some validation or GUI events like enabling a button OK. You can set the FSigno.PenWidth to fine tune the signature quality. On SaveAs* the image will be cropped to the actual signature to minimize the image size. You can use it as you want if it works or helps. Signature.pas
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pre-generic dictionary class
Attila Kovacs replied to dummzeuch's topic in Algorithms, Data Structures and Class Design
I must have misunderstood the topic title. My apologies. -
pre-generic dictionary class
Attila Kovacs replied to dummzeuch's topic in Algorithms, Data Structures and Class Design
The "Sorted" property changes the behavior how stringlist works. If it's not set, it won't yield on duplicate values (looking up would take too much time), and Thomas obviously needs this function as he tries to mimic a TDictionary. -
Accessing variables outside a For loop
Attila Kovacs replied to Bernard's topic in Algorithms, Data Structures and Class Design
After the loop != after the loop. in the very next line a register/stack could hold the right value, a couple of lines lower it will surely hold only garbage where the emphasis is on the "could". it depends on the codegen, different compiler options, compiler versions, platforms may generate different loop code -
Accessing variables outside a For loop
Attila Kovacs replied to Bernard's topic in Algorithms, Data Structures and Class Design
There is no guarantee that in the code generated by the compiler there will be any "variable" used. Even if it works today, it could change in the future. -
SVG control package v2.3 update 4 released
Attila Kovacs replied to bverhue's topic in Delphi Third-Party
The prices were ok, I started scratching my head at this: "Delphi Source code of the SVG control package, this includes:" "The source code necessary to parse and render svg graphics" ...... I could not decide if one would get all the sources or partially just dcu's or whatever. -
you can also go with join if you want ;WITH t AS( SELECT * FROM ( VALUES ('a'),('b'),('c') ) AS _(x) ) ,t2 AS( SELECT * FROM ( VALUES ('a'),('b'),('d') ) AS _(y) ) SELECT * FROM t LEFT JOIN t2 ON t2.y=t.x
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Interesting size reduction algorithm for HashTable
Attila Kovacs replied to Tommi Prami's topic in Algorithms, Data Structures and Class Design
Okay. This explains everything. This is the Message Of The Century. -
Interesting size reduction algorithm for HashTable
Attila Kovacs replied to Tommi Prami's topic in Algorithms, Data Structures and Class Design
And meanwhile we are sitting here, money just falling out of our *nus, which we gladly forward to emba just for being collective responsible for whatever -
No. The event OnJoyMove should be triggered every time you move the joystick, not just one time. There must be something else.
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procedure TForm1.MyOnMoveHandler(Sender: TObject; var X, Y: Integer); begin DoSomething(x, y); end; procedure TForm1.X; begin myJoy := Tjoystick.Create(Form1); myJoy.OnJoyMove := MyOnMoveHandler; end;
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Get class instance in record
Attila Kovacs replied to Ugochukwu Mmaduekwe's topic in Algorithms, Data Structures and Class Design
Not outside, as it's strict private. You could pass TA instances to the method you are using to initialize your record. class function DefaultB(ATA: TA): TB; static; begin Result.ClassAInstance := ATA; end; -
As a Delphi expert, do you ever need to refactor or improve your code?
Attila Kovacs replied to Mike Torrettinni's topic in Algorithms, Data Structures and Class Design
It's an interesting topic since ages. Please don't kill it. The original question was also very broad (or strictly just a yes/no question). -
And it's not just about html, it's about everything... I have so far: Runtime user rights management with htscript Runtime charts designer with htreports, including SVG maps over 8500 paths (ZIP code areas) HTML Report generator in a Report generator (like the one in the video, just not FR) On the fly datasheet generator, in just msecs Custom dropdown forms with interactive elements Several webshop-template/text editors with htmledit (wysiwyg) Several visualizations like notes, appointments, charts, etc.. with dynamic content and dynamic sizes (looks really great) many other things... and many many new ideas.. I can't wait for the office extensions! I love it! And everything native. Dig this.
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Can't reproduce in Chrome. @Kas Ob. Wat is your default os encoding and which parentheses was it?
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custom attributes question
Attila Kovacs replied to David Schwartz's topic in RTL and Delphi Object Pascal
They are different, but you can parse and look for the field or for the property for yourself. You can also put as many attributes to your field/property as you want. -
@Alexander Sviridenkov So you have implemented the whole office package into Delphi? I hope it's not only for FMX. 😉
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holy cow Alexander
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I was playing with TWebBrowser and it turns out that it just renders crap in HDPI mode. A simple winforms app with a webbrowser renders everything correctly. Both exe's are added to FEATURE_BROWSER_EMULATION with 11000 and checked the compatibility mode with https://detectmybrowser.com/ Tested in 10.1/10.2/10.3 I could not find any report about it, maybe I'm doing something wrong. Has anyone else experienced this?