4/5/2023 0 Comments Texmacs include pdf![]() ![]() TeXmacs currently runs on most Unix-based architectures including Linux, FreeBSD, Cygwin, Haiku and macOS. Along with the Cygwin version, a native port is available for Microsoft Windows. In the TeXmacs editor structure and appearance of the document are represented at the same time the structure is made evident to the user by surrounding logical units of the document in nested focus frames carrying color cues that are displayed according to the movement of the cursor. A detailed description of the structure in the proximity of the cursor is provided in the footer of the editor window, finely selectable with left-right arrow presses. In the editor it is possible to switch between text mode and source mode editing, and support for the composition of macros is present the source editor is syntax-aware. (written here with the TeX markup used by Wikipedia) and is turned by TeXmacs' own typesetting engine into a typeset formula, here inserted as an image: TeXmacs facilitates the inputting of mathematical formulas by mapping sequences of keyboard presses to symbols. TeXmacs trees are represented in TeXmacs files as strings, and in the TeXmacs editor as the typeset representation of the document together with its interactive behaviour. In the on-screen representation of the TeXmacs tree, the cursor movement represents the movement inside the tree. On disk, three representations of the TeXmacs format exist: a native representation, an XML representation and a representation with Scheme S-expressions the Scheme representation is useful for the interfacing with Scheme programs. ![]() The typesetting process converts TeXmacs trees into boxes. Evaluation of TeXmacs trees proceeds by reduction of the primitives, that is by evaluation of macro applications. Libjpg, but they are small and a tiny price to pay.The typesetting primitives are designed to be very fast and are built-in into the editor the rendering of many of the primitives can be customized through the built-in environment variables the stylesheet language allows users to write new primitives as macros on top of the built-in primitives. To read other image formats I guess we will have to include libpng and "core" independent of Qt or any other UI library, and at the same time avoidĭepending on Cario or other graphics library, and be able to import PDF and Produces a bitmap which we can put on screen. ![]() Use it also to draw on screen by having a renderer which interprets TeXmacsĬommands and create calls to PDF graphic operators into mupdf which then It provides PDF input and also some SVG support. My current attempt is to use mupdf, it is well done and we could include it To support wasm since they make our executable bigger. All these dependences also make more complex We use one of these libraries we do not really need to add another dependence All these libraries have their own internal graphicsĪPI to convert PDF into bitmaps (pdfium uses AGG or experimentally Skia). To "read" PDF then we need to include already some PDF input library like My reason not to use the cairo renderer is the following: if we want to be able How things are organized and make them independent of Qt. Support, including vector formats like PDF and SVG, so I would like to rethink In my mind we cannot really ship TeXmacs without some basic and uniform image Least in two places: in image_files.cpp and in qt_utilities.cpp and some other Images, and that we have image handling logic here and there in our code, at Start to affect other parts like the PDF renderer, due to need to handle What I do not like right now is that some Qt code Actually I would like to discuss here what the > renderer to achieve what you have in mind (and support svg at the same > a major roadblock that prevents using this already started Cairo > we need onto cairo surfaces (poppler for pdf, librsvg for svg). > formats (ps, pdf, svg, bitmap), and good libraries exist to put anything Indeed, Cairo is versatile in terms of output > in the past, and I am surprised you do not explicitly consider this as > In the repo, I have noticed that some work was made on a Cairo renderer Is independent on other libraries like Qt. Yes, I agree, we should need some strong support for PDF, PNG, JPG, SVG which > support svg because it is the standard vector format for the web. Also, in addition to the formats you mention I think we should > favor of handling images with less variability, and independently of the > present and that can differ in version numbers. > users because we use a collection of external tools that are not always > Yes, at present we cannot ensure a reproducible image handling across ![]() Feb 2022, at 11:31, Philippe Joyez wrote: ![]()
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