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Alexander Sviridenkov
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Content Count
150 -
Joined
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Last visited
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Days Won
15
Everything posted by Alexander Sviridenkov
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TIP for Creating PDF Files from HTML / Image
Alexander Sviridenkov replied to microtronx's topic in RTL and Delphi Object Pascal
Thanks, I didn't know Edge supports header/footer customization. Are header/footer embedded into page or passed separately? Does it support different headers/footers for different pages? -
TIP for Creating PDF Files from HTML / Image
Alexander Sviridenkov replied to microtronx's topic in RTL and Delphi Object Pascal
Browsers do not support page headers and footers, different page sizes/orientation, printing page number and count of pages, repeated table headers, etc. -
HTML Parser alternative to MSHTML?
Alexander Sviridenkov replied to Darian Miller's topic in Delphi Third-Party
Sorry, I forgot to mention that when using chaining, current node should be passed to XPath as parameter to prevent XPath walking up toi root. var D: THtmlNode; N, A: THtNode; begin D := THtmlNode.Create; try D.Parse('<body><h1 id="header1"<a href="a1">First</a><a href="a2">Second</a></h1><h2><div><a href="a3">Third</a></div></h2></body>'); for N in D.XPath('//h1[@id="header1"]') do for A in N.XPath('//a', false, N) do ShowMessage(A['href']); for N in D.XPath('//h2') do for A in N.XPath('//a', false, N) do ShowMessage(A['href']); finally D.Free end; Second parameter is "stop after first found node", third is current root node. -
HTML Parser alternative to MSHTML?
Alexander Sviridenkov replied to Darian Miller's topic in Delphi Third-Party
Only when using THtDocument. With THtmlNode and THtmlStyledNode works without canvas units uses htmlpars; var D: THtmlNode; N: THtNode; begin D := THtmlNode.Create; try D.Parse('<body><div id="1"><ul><a href="a1">First</a><a href="a2">Second</a></ul></div><div><ul><a href="a3">Third</a></ul></div></body>'); for N in D.XPath('//div[@id="1"]/ul/a') do ShowMessage(N['href']); finally D.Free end; -
HTML Parser alternative to MSHTML?
Alexander Sviridenkov replied to Darian Miller's topic in Delphi Third-Party
HCL is layered, HTML and CSS parsers has no dependencies on framework or OS. Class hierarchy is THtNode (htmlpars unit, only RTL) -> THtXMLNode (htxml unit, only RTL) | THtmlNode (htmlpars unit, only RTL) | TStyledHTMLNode (htmlcss unit, only RTL) | TElement (htmldraw unit) | THtDocument (htmldraw unit) THtDocument/TElement use VCL/FMX units for several reasons 1. Native controls in HTML page (edits, combos, etc.) . 2. VCL themes (theme colors support) 3. VCL/FMX canvas (THtDocument can draw on VCL/FMX canvas) But all graphics (canvas classes) is isolated. -
HTML Parser alternative to MSHTML?
Alexander Sviridenkov replied to Darian Miller's topic in Delphi Third-Party
Parser itself do not depend on canvas, VCL or something else. You can use THtmlNode class (hmlpars unit, code is almost the same: D := THtmlNode.Create;D.Parse(..)) THtmlNode supports XPath. For JQuery please use TStyledHTMLNode (htmlcss unit). Both XPath and JQuery can be called from any node so chaining is possible. -
HTML Parser alternative to MSHTML?
Alexander Sviridenkov replied to Darian Miller's topic in Delphi Third-Party
In this case canvas doesn't matter. -
HTML Parser alternative to MSHTML?
Alexander Sviridenkov replied to Darian Miller's topic in Delphi Third-Party
Sample uses htmldraw, htmlpars; .. var D: THtDocument; N: THtNode; begin D := THtDocument.Create; try D.Parse('<body><div id="1"><ul><a href="a1">First</a><a href="a2">Second</a></ul></div><div><ul><a href="a3:>Third</a></ul></div></body>'); for N in D.JQuery('div#1 ul a') do ShowMessage(N['href']); for N in D.XPath('//div[@id="1"]/ul/a') do ShowMessage(N['href']); finally D.Free end; -
HTML Parser alternative to MSHTML?
Alexander Sviridenkov replied to Darian Miller's topic in Delphi Third-Party
Why ypu don't you parser from HTML Component Library? AFAIR you own a license. Parser supports XPath and JQuery so searching for particular nodes is quite simple. -
HTML Component Library can be used to create exacly the same UI.
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In recent Delphi there is s.SpltString() which returns array of string.
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Frequency Spectrum of Selected Audio
Alexander Sviridenkov replied to dkjMusic's topic in Algorithms, Data Structures and Class Design
https://en.wikipedia.org/wiki/Fast_Fourier_transform -
25% discount on HTML Library (until Saturday), please use coupon code BF2021 https://delphihtmlcomponents.com
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awk-like processor using Delphi code?
Alexander Sviridenkov replied to David Schwartz's topic in General Help
HTML Component Library. Yes, it can display almost the same as browser (HTML4 and CSS3, except JS) but I was thinking about using its CSS part for calculating and applying rules. -
awk-like processor using Delphi code?
Alexander Sviridenkov replied to David Schwartz's topic in General Help
HCL has very fast and universal CSS processor (separated from UI/rendering), maybe it can be used there. -
awk-like processor using Delphi code?
Alexander Sviridenkov replied to David Schwartz's topic in General Help
Isn't that similar to CSS? -
Report Builder + HTML Library + Office Library.
Alexander Sviridenkov posted a topic in Delphi Third-Party
Small video showing how to embed any part of (or whole) PDF, PowerPoint, Excel, Word, Outlook, document into report. Document is embedded in vector format and is editable (can be changed in built in HTML Editor). https://s9.gifyu.com/images/rb5bba15035de9053c.gif -
Report Builder + HTML Library + Office Library.
Alexander Sviridenkov replied to Alexander Sviridenkov's topic in Delphi Third-Party
Yes. -
Report Builder + HTML Library + Office Library.
Alexander Sviridenkov replied to Alexander Sviridenkov's topic in Delphi Third-Party
Theoretically yes, but currently no. -
Report Builder + HTML Library + Office Library.
Alexander Sviridenkov replied to Alexander Sviridenkov's topic in Delphi Third-Party
There is CSS contenteditable property which can be set to true or false using snandard CSS rules. Deleting of certain tags cannot be prohibited, but editor supports XML schema which can define rules for adding new tags (what tags are allowed and what tag can be added to another tag). -
Report Builder + HTML Library + Office Library.
Alexander Sviridenkov replied to Alexander Sviridenkov's topic in Delphi Third-Party
Yes -
Reading SVG code from text file
Alexander Sviridenkov replied to misc_bb's topic in Algorithms, Data Structures and Class Design
When reading text file you should know (or determine) its encoding. -
AI experiences, GPT3 Leta series
Alexander Sviridenkov replied to Rollo62's topic in Algorithms, Data Structures and Class Design
In my country all mobile providers and banks use such AI, and all these AIs are so stupid that first thing that everyone do when calling is trying to force him to switch to human. Just another annoying thing like long voice menus. -
JFYI HTML Office Library (including HTML Component Library) adds 4.5Mb for all supported formats - PDF, DOC, DOCX, XLS, XLSX, PPT, PPTX, SC, MD, HTML, MSG. Final exe size (when compiled in 11 release) is 6.7 Mb.