Happy new year!
Comments, Replaced pictures, Removed Patreon
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The MIT License (MIT)
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Copyright (c) 2014-2019 Omar Cornut
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Copyright (c) 2014-2020 Omar Cornut
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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14
docs/FAQ.md
14
docs/FAQ.md
@ -371,23 +371,23 @@ Finally, you may call ImGui::ShowMetricsWindow() to explore/visualize/understand
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### Q: How can I use my own math types instead of ImVec2/ImVec4?
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You can edit [imconfig.h](https://github.com/ocornut/imgui/blob/master/imconfig.h) and setup the IM_VEC2_CLASS_EXTRA/IM_VEC4_CLASS_EXTRA macros to add implicit type conversions.
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This way you'll be able to use your own types everywhere, e.g. passing MyVector2 or glm::vec2 to ImGui functions instead of ImVec2.
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You can edit [imconfig.h](https://github.com/ocornut/imgui/blob/master/imconfig.h) and setup the `IM_VEC2_CLASS_EXTRA`/`IM_VEC4_CLASS_EXTRA` macros to add implicit type conversions.
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This way you'll be able to use your own types everywhere, e.g. passing `MyVector2` or `glm::vec2` to ImGui functions instead of `ImVec2`.
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---
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### Q: How can I interact with standard C++ types (such as std::string and std::vector)?
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- Being highly portable (bindings for several languages, frameworks, programming style, obscure or older platforms/compilers), and aiming for compatibility & performance suitable for every modern real-time game engines, dear imgui does not use any of std C++ types. We use raw types (e.g. char* instead of std::string) because they adapt to more use cases.
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- To use ImGui::InputText() with a std::string or any resizable string class, see [misc/cpp/imgui_stdlib.h](https://github.com/ocornut/imgui/blob/master/misc/cpp/imgui_stdlib.h).
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- To use combo boxes and list boxes with std::vector or any other data structure: the BeginCombo()/EndCombo() API
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lets you iterate and submit items yourself, so does the ListBoxHeader()/ListBoxFooter() API.
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Prefer using them over the old and awkward Combo()/ListBox() api.
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- To use combo boxes and list boxes with `std::vector` or any other data structure: the `BeginCombo()/EndCombo()` API
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lets you iterate and submit items yourself, so does the `ListBoxHeader()/ListBoxFooter()` API.
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Prefer using them over the old and awkward `Combo()/ListBox()` api.
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- Generally for most high-level types you should be able to access the underlying data type.
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You may write your own one-liner wrappers to facilitate user code (tip: add new functions in ImGui:: namespace from your code).
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- Dear ImGui applications often need to make intensive use of strings. It is expected that many of the strings you will pass
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to the API are raw literals (free in C/C++) or allocated in a manner that won't incur a large cost on your application.
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Please bear in mind that using std::string on applications with large amount of UI may incur unsatisfactory performances.
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Modern implementations of std::string often include small-string optimization (which is often a local buffer) but those
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Please bear in mind that using `std::string` on applications with large amount of UI may incur unsatisfactory performances.
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Modern implementations of `std::string` often include small-string optimization (which is often a local buffer) but those
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are not configurable and not the same across implementations.
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- If you are finding your UI traversal cost to be too large, make sure your string usage is not leading to excessive amount
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of heap allocations. Consider using literals, statically sized buffers and your own helper functions. A common pattern
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@ -3,16 +3,12 @@ dear imgui
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[](https://github.com/ocornut/imgui/actions?workflow=build)
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[](https://scan.coverity.com/projects/4720)
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<sub>(This library is available under a free and permissive license, but needs financial support to sustain its continued improvements. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out. If you are an individual using dear imgui, please consider supporting the project via Patreon or PayPal.)</sub>
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<sub>(This library is available under a free and permissive license, but needs financial support to sustain its continued improvements. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out.)</sub>
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Businesses: support continued development via invoiced technical support, maintenance, sponsoring contracts:
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<br> _E-mail: contact @ dearimgui dot org_
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Individuals/hobbyists: support continued maintenance and development via the monthly Patreon:
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<br> [](http://www.patreon.com/imgui)
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Individuals/hobbyists: support continued maintenance and development via PayPal:
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<br> [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S)
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Individuals: support continued maintenance and development via [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S) donations.
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----
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@ -29,7 +25,7 @@ Dear ImGui is particularly suited to integration in games engine (for tooling),
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### Usage
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**The core of Dear ImGui is self-contained within a few platform-agnostic files** which you can easily copy and compile into your application/engine. They are all the files in the root folder of the repository (imgui.cpp, imgui.h, imgui_demo.cpp, imgui_draw.cpp etc.).
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**The core of Dear ImGui is self-contained within a few platform-agnostic files** which you can easily compile in your application/engine. They are all the files in the root folder of the repository (imgui.cpp, imgui.h, imgui_demo.cpp, imgui_draw.cpp etc.).
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**No specific build process is required**. You can add the .cpp files to your existing project.
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@ -48,7 +44,7 @@ ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
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ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
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```
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Result:
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<br>
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<br> 
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<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
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Code:
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@ -183,16 +179,12 @@ How to help
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**How can I help financing further development of Dear ImGui?**
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Your contributions are keeping this project alive. The library is available under a free and permissive license, but continued maintenance and development are a full-time endeavor and I would like to grow the team. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out for invoiced technical support and maintenance contracts. If you are an individual using dear imgui, please consider supporting the project via Patreon or PayPal. Thank you!
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Your contributions are keeping this project alive. The library is available under a free and permissive license, but continued maintenance and development are a full-time endeavor and I would like to grow the team. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out for invoiced technical support and maintenance contracts. Thank you!
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Businesses: support continued development via invoiced technical support, maintenance, sponsoring contracts:
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<br> _E-mail: contact @ dearimgui dot org_
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Individuals/hobbyists: support continued maintenance and development via the monthly Patreon:
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<br> [](http://www.patreon.com/imgui)
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Individuals/hobbyists: support continued maintenance and development via PayPal:
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<br> [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S)
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Individuals: support continued maintenance and development via [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S) donations.
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### Sponsors
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@ -29,6 +29,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
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- window: investigate better auto-positioning for new windows.
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- window: top most window flag? (#2574)
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- window: the size_on_first_use path of Begin() can probably be removed
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- window/size: manually triggered auto-fit (double-click on grip) shouldn't resize window down to viewport size?
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- window/opt: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. -> this may require enforcing that it is illegal to submit contents if Begin returns false.
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- window/child: the first draw command of a child window could be moved into the current draw command of the parent window (unless child+tooltip?).
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- window/child: border could be emitted in parent as well.
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@ -38,6 +39,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
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! scrolling: exposing horizontal scrolling with Shift+Wheel even when scrollbar is disabled expose lots of issues (#2424, #1463)
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- scrolling: while holding down a scrollbar, try to keep the same contents visible (at least while not moving mouse)
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- scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
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- scrolling: forward mouse wheel scrolling to parent window when at the edge of scrolling limits? (useful for listbox,tables?)
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- scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
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- scrolling/style: shadows on scrollable areas to denote that there is more contents
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@ -159,6 +161,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
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- tabs: make EndTabBar fail if users doesn't respect BeginTabBar return value, for consistency/future-proofing.
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- tabs: persistent order/focus in BeginTabBar() api (#261, #351)
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- tabs: TabItem could honor SetNextItemWidth()?
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- image/image button: misalignment on padded/bordered button?
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- image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
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@ -349,6 +352,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
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- misc: idle: expose "woken up" boolean (set by inputs) and/or animation time (for cursor blink) for back-end to be able stop refreshing easily.
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- misc: idle: if cursor blink if the _only_ visible animation, core imgui could rewrite vertex alpha to avoid CPU pass on ImGui:: calls.
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- misc: idle: if cursor blink if the _only_ visible animation, could even expose a dirty rectangle that optionally can be leverage by some app to render in a smaller viewport, getting rid of much pixel shading cost.
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- misc: no way to run a root-most GetID() with ImGui:: api since there's always a Debug window in the stack. (mentioned in #2960)
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- misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
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- misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
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- misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
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10
imgui.h
10
imgui.h
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#endif
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};
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// Enumateration for ImGui::SetWindow***(), SetNextWindow***(), SetNextItem***() functions
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// Enumeration for ImGui::SetWindow***(), SetNextWindow***(), SetNextItem***() functions
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// Represent a condition.
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// Important: Treat as a regular enum! Do NOT combine multiple values using binary operators! All the functions above treat 0 as a shortcut to ImGuiCond_Always.
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enum ImGuiCond_
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@ -1723,9 +1723,13 @@ struct ImGuiStorage
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// - Step 3: the clipper validate that we have reached the expected Y position (corresponding to element DisplayEnd), advance the cursor to the end of the list and then returns 'false' to end the loop.
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struct ImGuiListClipper
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{
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float StartPosY;
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int DisplayStart, DisplayEnd;
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int ItemsCount;
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// [Internal]
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int StepNo;
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float ItemsHeight;
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int ItemsCount, StepNo, DisplayStart, DisplayEnd;
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float StartPosY;
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// items_count: Use -1 to ignore (you can call Begin later). Use INT_MAX if you don't know how many items you have (in which case the cursor won't be advanced in the final step).
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// items_height: Use -1.0f to be calculated automatically on first step. Otherwise pass in the distance between your items, typically GetTextLineHeightWithSpacing() or GetFrameHeightWithSpacing().
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