Imgui dpi scaling example

Imgui dpi scaling example. In­teg­ra­tion of Dear ImGui in­to Mag­num. because 2. Sep 24, 2018 · I found this here DisplaySize update on OS window resize which shows my problem. begin_popup_modal("A Dialog", flags=imgui. A high-DPI screen could have a physical pixel resolution of 3840x2160, but on this screen the OS will display widgets with a scaling factor of 200%, so that widgets do not look too small on it. the following dialog (Python via pyimgui, sorry, hopefully you get the idea): with imgui. Run $ winecfg Apr 25, 2024 · DPI Scaling about imgui HOT 1 CLOSED LedLoaf commented on April 25, 2024 DPI Scaling. feature/hidpi-support branch. Search for io. The docs in the demo says: I did try the ScaleAllSizes but it doesn't work correctly. Now we can call our functions to create and handle a framebuffer. A common pattern is to merge the icon font within your main font, so you can embed icons directly from your strings without having to change fonts back and forth. if you want your app to use High DPI or generally be DPI aware) you may use this helper function. using DirectX, OpenGL) and all rendering has to happen inside this graphics context. When using mixed-mode DPI scaling within your process, each top-level Window can run in a DPI awareness mode that may be different than that of the process default. The recommend way of handling DPI is: "Obtain the desired DPI scale, load your fonts resized with that scale (always round down fonts size to the nearest integer), and scale your Style structure accordingly using style. Shows the Dear ImGui demo win­dow and two oth­er ex­ample win­dows which demon­strate ren­der­ing of im­me­di­ate-mode GUI us­ing the HiDPI-en­abled ImGui­In­teg­ra­tion lib­rary. Initial scale: Result when increasing window size: (Due to extreme scaling, image pixels are visible) Result when decreasing window size: Dec 3, 2021 · Screenshots/Video. ImGui::BeginMainMenuBar(); // Add menu bar items here ImGui::EndMainMenuBar(); Apr 17, 2024 · Demo, Examples. Ps: DEBUG = false to turn off debugs println() And last but most important - we need some kind of policy for picking DPI scaling we want to apply. Note: Oversampling afaik is here to fight artifacts on small fonts rendered with stb_truetype. On my Windows 11 desktop everything works perfectly (see below): The short answer is: obtain the desired DPI scale, load your fonts resized with that scale (always round down fonts size to the nearest integer), and scale your Style structure accordingly using style. C++17 required. With vcpkg. You should refer to those also to learn how to use the imgui library. 134. I'll add more examples in the future. 1 and call EnableNonClientDpiScaling (hWnd) in WM_NCCREATE message; The “Immediate Mode” GUI system (also known as IMGUI) is an entirely separate feature to Unity’s main GameObject-based UI (User Interface) Allows a user to interact with your application. ProggyClean does not scale smoothly, therefore it is recommended that you load your own file when Nov 3, 2023 · edited. Jan 8, 2023 · I have a Windows application under development and am using a 4K monitor scaled to 150% for development. ». If the application is not DPI aware, a screen coordinate may correspond to 2x2 physical pixels (if the display scaling is set to 200% for example). 86. IMGUI is a code-driven GUI system, and is mainly intended as a tool for ImPlot is an immediate mode, GPU accelerated plotting library for Dear ImGui. For example my monitors report DPI scales of 0. I have had some success with the other code examples in those issues Version/Branch of Dear ImGui: Version: Latest Branch: master. They are all the files in the root folder of the repository (imgui. From what I’ve seen imgui seems to support that out of the box. You should be able to build the examples from sources. When the DPI changes the original style needs to be copied over the current style before calling ScaleAllSizes (or the style has to be somehow reset by other Apr 18, 2023 · 100% Monitor Scaling Factor : 200% Monitor Scaling Factor : Standalone, minimal, complete and verifiable example: Reproductible with minimal example example_sdl2_opengl3. Nov 6, 2022 · Hi Guys, zgui author here. DisplaySize to 1920, 1080 which is my display size but the window is still getting smaller and I can’t click the buttons after resizing down. cpp + imgui_impl_dx11. Sorry for the late reply. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline-enabled application. If it is useful in your research/work, 8 * Liangliang Nan. width will give correct value for the width of EditorWindow, but a button of width 100 pixels isn't actually 100 pixels but 150 pixels wide. The app has to maintain two sets of styles: the current style with DPI scaled sizes and original non-scaled style. 1), so this does not depend on complete Mar 13, 2017 · What you need is to increase resolution of generated font atlas. I’m settings io. I can see the text is created big in the glyph atlas and if I scale it down its shown at smaller sizes. Short explanation: Refer to Image Loading and Displaying Examples on the Wiki. My Issue/Question: Hello, I know the questions about high DPI scaling have been asked a lot around here, however I do not think that I found a solution in the github issues. We embed it in the source code so you can use Dear ImGui without any file system access. The funny thing is when I run the ImGui interfaces are usually positioned with pixel units, getting more room on bigger windows. cpp etc. 21. It aims to provide a first-class API that ImGui fans will love. I'm aware of the existing threads and issues, e. NetImgui is a library to remotely display and control Dear ImGui menus with an associated NetImgui Server application. But when trying to do the same in ImGui, my image gets twice the scaling. Long story short, the font is so small it's impossible to see. " Nov 1, 2017 · It means that if driver creates one or more additional threads to render OpenGL, each thread will have different dpi awareness level. hInstance, NULL); For DPI awareness in your application, you can load/reload your font at different scale, and scale your style with style. Nevertheless, the examples/ folder are answering this question for variety of commonly used librairies (SDL, GLFW, SDL2). Nov 15, 2023 · Multi viewport DPI handling involve changing those depending on where we are located: moving an imgui window from screen 1 to screen 2 can affect sizing. Do this for each window you want to draw ImGui on. Integration On most platforms and when using C++, you should be able to use a combination of the imgui_impl_xxxx backends without modification (e. The Pitch. For example, here is a demo application with 1x scaling: However, if the UI scale is changed at runtime, window sizes and positions are not affected: When using High DPI screens, a common issue with ImGui is that windows will appear very small, and text rendering will be very small also. About Examples apps (docs/EXAMPLES. ). My goal is to have an application that correctly DPI Jul 6, 2022 · Most notably ScaleAllSizes is problematic for a couple of reasons: It's destructive. To run this demo in your browser, launch ImGui Manual. The code in imgui. So, to solve the problem we can use some "scaling" factor to scale the Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies - imgui/docs/EXAMPLES. I have notice that under some specific situations (by example using a Retina screen resolution is 5120×2880) the fonts are so smalls that it is unreadable and even the normal buttons/widgets size are so small that it is hard to click them. Dear ImGui is designed to be easily rendered using modern 3D renderers like OpenGL or DirectX, but while SDL2's renderer does use hardware acceleration (the beforementioned APIs) behind the scenes, it does not provide an interface to pass generic vertex data to OpenGL. h, therefore, such functions (which exist from Windows 10 onward) don't have a valid signature and Nov 13, 2022 · You can order a menu of any segment from me in discord: FiveSaven#8087 The function properly determines dpi (2) and sets it in io. Its responsibilities include the following: Rendering using vertex/index buffers and command lists. here and the example code in imgui_demo. The only issue I have encountered is in file win32_platform. Using Icon Fonts. There is notepad with "Debug" in the same font and font size as Dear ImGui in these screenshots. Mar 6, 2022 · Back-ends: imgui_impl_glfw. The example also shows how to track "TextScaleFactor" for UWP apps, see Settings > Accessibility > Text size, and apply it to Win32 window content scaling. The text was updated successfully, but these errors were encountered: ocornut added the dpi label on Apr 18, 2023. The source file containing the main () function: 5 * This file is part of Easy3D. 11 * Journal of Open Source Software, 6 (64), 3255, 2021. In this example, we'll decompress the image into RGBA a image. Tip. Having said that. So there are three solutions: Use old SetProcessDpiAwareness (PROCESS_PER_MONITOR_DPI_AWARE) function from Windows 8. Calling the ImGui::ShowDemoWindow() function will create a demo window showcasing a variety of features and examples. Aug 6, 2022 · “@MikkoMononen Yes for multi-dpi this what people currently do (there are hooks for it). Manually scaling display size and mouse input in imgui_impl_osx. Scaling the fonts is done separately and is up to you. Let's say we have a slider for changing the DPI scale. Feb 26, 2013 · Seems like some editor IMGUI rect values change when one has used editor preferences UI scaling. If the main DPI of the main monitor is 225% and on the second monitor it is 100%, and you run this function for the second monitor, you will get 2. (Adapted from the dock space example in the demo window) You need to use the docking branch and set the ImGuiConfigFlags_DockingEnable config flag. The core of Dear ImGui is self-contained within a few platform-agnostic files which you can easily compile in your application/engine. You can cherry pick patch to ImGui & FreeType atlas builder that add ImFontConfig::Density support from my. For example, if I scale UI to 150% Screen. , so please do tell me if this isn't the place to ask a question like this. With multi-viewports Dec 25, 2014 · Two final notes: First, dynamic changes to the scaling, such as the user moving the window between two monitors with different scaling factors, does not require full multiple monitor support, as it is possible to query the current scaling factor for a given window directly (at least on OS X and Windows 8. Feb 1, 2024 · Dear ImGui demo (and manual) Dear ImGui comes with a complete demo. The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. I have Dear ImGui configured for high DPI using ImGui_ImplWin32_EnableDpiAwareness() and using font scaling as per the documentation. cpp file has a ImGui::ShowDemoWindow() function which you can call from any imgui-enabled application to showcase variety of features. My Issue/Question: Hello I'm pretty new to ImGui and C++ in general, so please do forgive me if this question is irritating. Screenshot 1 (text in notepad is a bit bigger): Screenshot 2 (text in notepad is much bigger): Standalone, minimal, complete and verifiable example: I tried it with IMGUI_ENABLE_FREETYPE and without, got same result. Oct 27, 2023 · // To scale your entire UI (e. I'm not too sure this is the best option - it makes the built-in fixed-size font look nice and sharp, but in practice I found it makes UI's either overly small or, as you have seen, overly giant. Using an icon font (such as FontAwesome or OpenFontIcons) is an easy and practical way to use icons in your Dear ImGui application. Integration On most platforms and when using C++, you should be able to use a combination of the imgui_impl_xxxx files without modification (e. ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked) Apr 22, 2023 · Here’s how you can achieve this using ImGui’s layout system: Step 1: Create the Main Window First, let’s create the main window with a menu bar using the BeginMainMenuBar() and EndMainMenuBar() functions. When the DPI changes the original style needs to be copied over the current style before In my case the font scale works. I honestly don't know why, but the ordering matters: First we render the ImGui window and then we render our triangle. A non-DPI-aware setup would be simply this: ImGuiIntegration:: Context imgui {windowSize ()}; If you want the UI to keep a reasonable physical size and stay crisp with different pixel densities, pass a ratio of window size and DPI scaling to the UI size: Mar 27, 2023 · Let's Put All Together. cpp Compiler: clang Operating System: Mac OS Monterey, Mac Mini M1. Blurry fringe means you have a scale dear imgui is not seeing. Preparation: you need to have vcpkg installed; its executable is available in the PATH; VCPKG_ROOT environment variable is set; to be able to use CMake presets v3, you need to have CMake at least v3. 0 to imgui-1. ttf' (by Tristan Grimmer), a 13 pixels high, pixel-perfect font used by default. Its flexibility makes it suited for complex applications, as well as for simple prototypes; allowing you to focus on the creative aspects of your projects. This code is quite bottleneck (this is why there is a hot-dense IndexXAdvance [] array instead of poking in Glyphs). On desktop platforms, HelloImGui tries to detect the screen DPI scaling factor, and will then load the font at twice the size if the screen scaling factor is 200%. SDL2, GLFW3, and Glutin basically don't seem to have proper support for reading the frame buffer scale on X11, Wayland or Win32. For each widget, you will see the corresponding demo code (in C++. md) The examples/ folder contains 23 standalone example applications for varieties of platforms and frameworks. It is designed to be easy to use and integrate into existing projects, and is particularly well-suited for creating in-game tools and debugging windows. Jul 10, 2018 · This question is out of the scope of dear imgui, the answer depends on your underlying platform/engine. Hello ImGui. 25. I've used DPI awareness with many other opengl applications successfully and that worked fine for properly scaling the Windows window itself, so unless I'm missing something Windows DPI API doesn't fix imgui. Here's how the demo looks. cpp + imgui_impl_opengl3. 993 and 1. Dear ImGui: Using Fonts. ImPlot is well suited for visualizing program data in real-time or creating interactive plots, and requires minimal code to integrate. It seems that setting the dpiAware flag within Visual Studio only fixed our problems when the player was using the older DPI scaling method. Showcase. I can’t read text on the window either. Jul 5, 2023 · Multi-viewports is the feature allowing you to seamlessly extract Dear ImGui windows out of your main rendering context. HelloImGui and Dear ImGui Bundle provides a dedicated API for High-DPI handling. For the setup of the application, I use my C++ starter template I showed in the last post, Basic C++ setup with dependency management in CMake. Details: The FAQ says that the indented way to scale the UI is to change the font size and apply a scaling factor to the style. 0 and the main menu bar does not open menus anymore when clicking on them. Extending from #504, Using HiDpiMode::Default is indeed a good default As noted in comments (and in comment on the linked PR), imgui-winit-support + winit handles most of the scaling for us Howeve HelloImGui::Run(guiFunction, windowTitle, windowSize, windowSizeAuto=false, restoreLastWindowGeometry=false, fpsIdle=10) Runs an application, by providing the Gui function, the window title, etc. ImGui Example. While such scaling with "natural" fonts is fine, default font is totally ruined by fractional scaling and there is no way to fix that because font is meant to fit pixels precisely. cpp, imgui_draw. h, imgui_demo. Designed to painlessly integrate into existing codebase with few changes required. lpszClassName, L"Micheal's Application", WS_OVERLAPPEDWINDOW, 100, 100, 600, 800, NULL, NULL, wc. The imgui_demo. ” I'm using imgui with the GLFW renderer, in Python. Size) ? IndexXAdvance[(int)c] * scale : FallbackXAdvance; to handle missing glyphs according to font size. _ImGuiStyle_ScaleAllSizes(self, scale_factor); API docs for the ImGuiStyle_ScaleAllSizes function from the imgui_dart library, for the Dart programming language. imgui_impl_win32. ImGui (short for “Immediate Mode GUI”) is a library for creating graphical user interfaces (GUIs) in C++. ImGui::Begin (" Another Window ", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked) ImGui::Text ( " Hello from another window! Rust bindings for Dear ImGui. cpp ). Hello ImGui is a library designed to make multiplatform app development as simple as writing a “Hello World” program, built on top of Dear ImGui. Also I am not sure whether this is the correct place to ask this question. WINDOW_NO_COLLAPSE) as dialog: // To scale your entire UI (e. I'm trying out someones software called RPG-TOOLS and it uses imgui. I modified the example code and am using that as a base for my project. Oct 3, 2023 · In addition, there are still some bugs: the earth is not rendered at the center of the scene, which is should be. 87. Immediate mode 3D gizmo for scene editing and other controls based on Dear Imgui - CedricGuillemet/ImGuizmo Windows 8. Unity currently supports three UI systems. Whether you want to do this depends on your application. Using ImGui-SFML in your code. My question is specifically about using ImGui::DockSpaceOverViewport. I also include the glfw code if someone need to rebuild the glfw library since I don't know how to add the github and make the cmake do it's magic for building it :-D. And that is what ImFontConfig::Density is for. Integration Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can For DPI awareness in your application, you can load/reload your font at different scale, and scale your style with style. Multiple WM_SETTINGCHANGE and other GUI change notifications can come in quick succession, so it is possible to alleviate excess refresh and flickering by coalescing those, to improve user Feb 9, 2022 · I just tried to upgrade imgui in a GUI application (internal to the company where I work, so I cannot share it) from imgui-1. ImGuiSDL is a lightweight SDL2 based renderer for Dear ImGui. Owner. WINDOW_ALWAYS_AUTO_RESIZE | imgui. It allows any program using Dear ImGui to receives input from a remote PC and then forwards its UI rendering to it ( textures, vertices, indices Implementation. For example the padding between selectable items disappears so that needs some work I think. Dear ImGui is a bloat-free graphical user interface library for C++. kjblanchard pushed a commit to kjblanchard/imgui that referenced this issue on May 5, 2023. E. DisplayFramebufferScale. If the application is DPI aware, a screen coordinate corresponds to 1x1 physical pixel, and you can use the full extent of your screen resolution. md at master · ocornut/imgui. Comments (1) ocornut commented on April 25, 2024 . Most of my tools experience comes from an enterprise background, in the past I've used the following frameworks: raw Win32, MFC, wxWidgets, QT 3, WinForms and most recently WPF. Without using CMake preset: $ cd /path/to/glfw-imgui-example. Aug 25, 2021 · Support for running more than one DPI awareness mode within a process is referred to as "mixed-mode DPI scaling". cpp. You may use functions such as ImGui::Image(), ImGui::ImageButton() or lower-level ImDrawList::AddImage() to emit draw calls that will use your own textures. Dec 26, 2023 · I'm struggling to create a default docking layout im combination with ImGui::DockSpaceOverViewport. The demo function is called from Dec 11, 2022 · I am new to ImGui, and trying to set the max and min window size. 5 vmware Wine applications. Read the part "C++ / Python porting advices" to see how easy it is Jul 30, 2022 · Basic setup. g. More info See in Glossary System. For example, to get a final 2x scale factor: $ GDK_SCALE=2 GDK_DPI_SCALE=0. This will be the top container for our UI. As described in #GDK 3 (GTK 3), you can use GDK_SCALE to further scale up the entire UI (including icons & padding) and then use GDK_DPI_SCALE to scale only the text back down to a reasonable size. Otherwise, please ask and find your answer from a different Jan 5, 2023 · Usage. If you don't, let us know! Under Windows scaling would simply be dpi/96, but I have no enough experience with Mac or Linux, hence, no proposal. We will load this image: (Right-click to save as MyImage01. DisplaySize within the examples/ folder. January 24, 2023 by Shady Ganem. May 21, 2022 · Hello, So I have a 17" Game Laptop that does 4K resolution. Handling of DPI factors and scissor rects. For DPI awareness you can load/reload your font at different scale, and scale your Style with style. 10 * for processing and rendering 3D data. For DPI awareness in your application, you can load/reload your font at different scale, and scale your style with style. Examples: SDL+SDL_Renderer: Added call to SDL_RenderSetScale() to dis…. Updating the OS-side mouse cursor when imgui-rs requests it. Jul 9, 2021 · I guess your 169DPI screen may have a scaling factor of >1. cpp embeds a copy of 'ProggyClean. If the second monitor has 125% scaling (while the main monitor is still 225% scaling), then this function will return you 1 Aug 24, 2016 · In CalcTextSize () we can replace lines such as const float char_width = ((int)c < IndexXAdvance. $ mkdir build && cd $_. I understand that this line will set the width and hight of the window at the start to be 600*800: HWND hwnd = ::CreateWindowW(wc. It demonstrates all the widgets, together with an example code on how to use them. 5 which would mean the scaling factor gets rounded up to 2. This guide will have us load an image file from disk and display it in a Dear ImGui window. This works reasonably well, but has it's limitations. It is fast, portable, renderer agnostic, and self-contained (no external dependencies). However, the renderer still clips the image: Mouse events are also not handled properly as scaling is not applied to coordinates. Jun 13, 2019 · Now what’s pretty mandatory is support of skinning, retina display, etc. Your application may want to detect DPI change and reload the fonts and reset style between frames. mm fixes the problem: Mar 16, 2016 · I recently got a new Dell laptop with a high-dpi screen, but I've found out that high-dpi is a mess on both Linux and Windows, so I can't use this laptop for testing. cpp, imgui. Effectively calling Begin() can put you in a different DPI context. 0, since the example code uses HiDpiMode::Rounded. Unless explicitly specified, each thread will default to the Mar 3, 2017 · So for me my concerns with IMGUI extend past obvious things like multi-monitor support, power draw, DPI scaling. Just like ImGui, it does not burden the end user with GUI state Feb 10, 2021 · @wiourowseoif invoke the drawing of ImGui components ImgGUI does different OpenGL calls to draw the components, and that has to be done in every frame. It's destructive. ImGui Interactive Manual - GitHub Pages ImGuiAl: Widgets for imgui: MIT License: ImGui auto: Leverage C++17 to serialize any structure into imgui interfaces: MIT License: ImGuiColorTextEdit: Colorizing text editor for ImGui: MIT License: imguiDock: An addon of imgui for supporting docks in the imgui's window: imgui-filebrowser: File browser implementation for dear-imgui. And there is deformation, and blurry (UNSOLVED, I raised another issue Correctly rendered opengl scene and model in default window not at the right size and position in a imgui window. Dec 8, 2022 · Using the window content scale is a reliable method. ScaleAllSizes() (see FAQ). . When the auto-resize window flag is set and the system scaling is not 100%, the dialog size seems to be incorrect. imgui_sdl. ScaleAllSizes(). Contribute to imgui-rs/imgui-rs development by creating an account on GitHub. If I hover over the menu items, they change color, but left or right click do not open menus anymore. #. On MacOS the window size and framebuffer size may differ, so these also need to be taken into account. Note that I want the scaling I have implemented since it saves performance, I just want to turn off image scaling from ImGui side. Tutorial_202_Viewer_imgui. 25 * real resolution = the virtual resolution of the monitor. The newer one still results in larger-than-desired Nov 29, 2022 · Fuller hi-dpi support on Mac in the examples app will be address separately but this fixes this issue. Call ImGui::SFML::Init and pass your sf::Window + sf::RenderTarget or sf::RenderWindow there. For example, I enabled per monitor DPI awareness and played with different DPI values, but it didn't scale imgui. Although the API is extremely simple, it is highly customizable, and you can set many options by filling the elements in the RunnerParams struct, or Dec 13, 2015 · ghost commented Dec 13, 2015. Jan 24, 2023 · Getting Started with ImGui: A Beginner’s Tutorial. For various reasons it currently needs to be handled by user. Actual textures are identified in a way that is up to the user/engine. jpg, 20,123 bytes) This is generally done in two steps: Load image from the disk into RAM. Integration ¶ On most platforms and when using C++, you should be able to use a combination of the imgui_impl_xxxx files without modification (e. 1 and Windows 10 also include per-monitor DPI scaling (but confusingly still allow you to set the global scale too as per the older method). Is there a platform-independent way to apply a scale factor to the entire imgui interface? On high DPI (Windows) and Retina (macOS) displays, my GUI I just added a simple Imgui window so this can be a base project for studing opengl, imgui or glfw without much trouble. For DPI awareness in your application, you can load/reload your font at different scale, and scale your Style with style. Right between ImGui::Begin() and ImGui::End() we add our framebuffer as image to the window. The renderer is responsible for taking generic, renderer-agnostic draw lists generated by imgui-rs, and rendering them using some graphics API. h where at line 53 WINVER is defined because declared before windows. // Tips: if you need to change your scale multiple times, prefer calling this on a freshly initialized ImGuiStyle structure rather than scaling multiple times Jan 15, 2024 · High-DPI with HelloImGui and ImGui Bundle. Aug 12, 2020 · Simple example, of how to use the dock builder API. I am using the example dx10 ImGui code. Rust bindings for Dear ImGui. The window hint GLFW_SCALE_TO_MONITOR will automatically scale your window size by the content scale. // Important: This operation is lossy because we round all sizes to integer. [/quote] For Hi-DPI etc what you’d generally do is to load font based on your desired scale + scale the ImGuiStyle structure (there’s a helper ScaleAllSizes). The code is always available for reference in imgui_demo. 16 * as published by the Free Software Foundation. ocornut closed this as completed on Jan 31, 2023. You can create your font atlas and pass the pointer in Init too, otherwise the default internal font atlas will be created for you. …as part of the project if you can't use its api's considering you already have a renderer the SDL provides the context and does the swapping, and you still could (if you want) use SDL_Renderer in combination with ImgUI if you want to do that. In traditional game programming, your engine/game generally create an OS window associated to a graphics context (e. from imgui. xg bd vt ez rk xx hl nf ar zg