Updated ImGui.

3rdparty/dear-imgui/imgui.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.79
+// dear imgui, v1.80 WIP
 // (main code and documentation)
 
 // Help:
@@ -167,21 +167,21 @@ CODE
  GETTING STARTED WITH INTEGRATING DEAR IMGUI IN YOUR CODE/ENGINE
  ---------------------------------------------------------------
  - Run and study the examples and demo in imgui_demo.cpp to get acquainted with the library.
- - In the majority of cases you should be able to use unmodified back-ends files available in the examples/ folder.
- - Add the Dear ImGui source files + selected back-end source files to your projects or using your preferred build system.
+ - In the majority of cases you should be able to use unmodified backends files available in the examples/ folder.
+ - Add the Dear ImGui source files + selected backend source files to your projects or using your preferred build system.
    It is recommended you build and statically link the .cpp files as part of your project and NOT as shared library (DLL).
  - You can later customize the imconfig.h file to tweak some compile-time behavior, such as integrating Dear ImGui types with your own maths types.
  - When using Dear ImGui, your programming IDE is your friend: follow the declaration of variables, functions and types to find comments about them.
  - Dear ImGui never touches or knows about your GPU state. The only function that knows about GPU is the draw function that you provide.
    Effectively it means you can create widgets at any time in your code, regardless of considerations of being in "update" vs "render"
    phases of your own application. All rendering information are stored into command-lists that you will retrieve after calling ImGui::Render().
- - Refer to the bindings and demo applications in the examples/ folder for instruction on how to setup your code.
+ - Refer to the backends and demo applications in the examples/ folder for instruction on how to setup your code.
  - If you are running over a standard OS with a common graphics API, you should be able to use unmodified imgui_impl_*** files from the examples/ folder.
 
 
  HOW A SIMPLE APPLICATION MAY LOOK LIKE
  --------------------------------------
- EXHIBIT 1: USING THE EXAMPLE BINDINGS (= imgui_impl_XXX.cpp files from the examples/ folder).
+ EXHIBIT 1: USING THE EXAMPLE BACKENDS (= imgui_impl_XXX.cpp files from the backends/ folder).
  The sub-folders in examples/ contains examples applications following this structure.
 
      // Application init: create a dear imgui context, setup some options, load fonts
@@ -191,7 +191,7 @@ CODE
      // TODO: Fill optional fields of the io structure later.
      // TODO: Load TTF/OTF fonts if you don't want to use the default font.
 
-     // Initialize helper Platform and Renderer bindings (here we are using imgui_impl_win32.cpp and imgui_impl_dx11.cpp)
+     // Initialize helper Platform and Renderer backends (here we are using imgui_impl_win32.cpp and imgui_impl_dx11.cpp)
      ImGui_ImplWin32_Init(hwnd);
      ImGui_ImplDX11_Init(g_pd3dDevice, g_pd3dDeviceContext);
 
@@ -217,7 +217,7 @@ CODE
      ImGui_ImplWin32_Shutdown();
      ImGui::DestroyContext();
 
- EXHIBIT 2: IMPLEMENTING CUSTOM BINDING / CUSTOM ENGINE
+ EXHIBIT 2: IMPLEMENTING CUSTOM BACKEND / CUSTOM ENGINE
 
      // Application init: create a dear imgui context, setup some options, load fonts
      ImGui::CreateContext();
@@ -242,7 +242,7 @@ CODE
      while (true)
      {
         // Setup low-level inputs, e.g. on Win32: calling GetKeyboardState(), or write to those fields from your Windows message handlers, etc.
-        // (In the examples/ app this is usually done within the ImGui_ImplXXX_NewFrame() function from one of the demo Platform bindings)
+        // (In the examples/ app this is usually done within the ImGui_ImplXXX_NewFrame() function from one of the demo Platform Backends)
         io.DeltaTime = 1.0f/60.0f;              // set the time elapsed since the previous frame (in seconds)
         io.DisplaySize.x = 1920.0f;             // set the current display width
         io.DisplaySize.y = 1280.0f;             // set the current display height here
@@ -278,7 +278,7 @@ CODE
 
  HOW A SIMPLE RENDERING FUNCTION MAY LOOK LIKE
  ---------------------------------------------
- The bindings in impl_impl_XXX.cpp files contains many working implementations of a rendering function.
+ The backends in impl_impl_XXX.cpp files contains many working implementations of a rendering function.
 
     void void MyImGuiRenderFunction(ImDrawData* draw_data)
     {
@@ -357,7 +357,7 @@ CODE
     - On a TV/console system where readability may be lower or mouse inputs may be awkward, you may want to set the ImGuiConfigFlags_NavEnableSetMousePos flag.
       Enabling ImGuiConfigFlags_NavEnableSetMousePos + ImGuiBackendFlags_HasSetMousePos instructs dear imgui to move your mouse cursor along with navigation movements.
       When enabled, the NewFrame() function may alter 'io.MousePos' and set 'io.WantSetMousePos' to notify you that it wants the mouse cursor to be moved.
-      When that happens your back-end NEEDS to move the OS or underlying mouse cursor on the next frame. Some of the binding in examples/ do that.
+      When that happens your backend NEEDS to move the OS or underlying mouse cursor on the next frame. Some of the backends in examples/ do that.
       (If you set the NavEnableSetMousePos flag but don't honor 'io.WantSetMousePos' properly, imgui will misbehave as it will see your mouse as moving back and forth!)
       (In a setup when you may not have easy control over the mouse cursor, e.g. uSynergy.c doesn't expose moving remote mouse cursor, you may want
        to set a boolean to ignore your other external mouse positions until the external source is moved again.)
@@ -371,6 +371,16 @@ CODE
  When you are not sure about a old symbol or function name, try using the Search/Find function of your IDE to look for comments or references in all imgui files.
  You can read releases logs https://github.com/ocornut/imgui/releases for more details.
 
+ - 2020/10/14 (1.80) - backends: moved all backends files (imgui_impl_XXXX.cpp, imgui_impl_XXXX.h) from examples/ to backends/.
+ - 2020/10/12 (1.80) - removed redirecting functions/enums that were marked obsolete in 1.60 (April 2018):
+                        - io.RenderDrawListsFn pointer        -> use ImGui::GetDrawData() value and call the render function of your backend
+                        - ImGui::IsAnyWindowFocused()         -> use ImGui::IsWindowFocused(ImGuiFocusedFlags_AnyWindow)
+                        - ImGui::IsAnyWindowHovered()         -> use ImGui::IsWindowHovered(ImGuiHoveredFlags_AnyWindow)
+                        - ImGuiStyleVar_Count_                -> use ImGuiStyleVar_COUNT
+                        - ImGuiMouseCursor_Count_             -> use ImGuiMouseCursor_COUNT
+                      - removed redirecting functions names that were marked obsolete in 1.61 (May 2018):
+                        - InputFloat (... int decimal_precision ...) -> use InputFloat (... const char* format ...) with format = "%.Xf" where X is your value for decimal_precision.
+                        - same for InputFloat2()/InputFloat3()/InputFloat4() variants taking a `int decimal_precision` parameter.
  - 2020/10/05 (1.79) - removed ImGuiListClipper: Renamed constructor parameters which created an ambiguous alternative to using the ImGuiListClipper::Begin() function, with misleading edge cases (note: imgui_memory_editor <0.40 from imgui_club/ used this old clipper API. Update your copy if needed).
  - 2020/09/25 (1.79) - renamed ImGuiSliderFlags_ClampOnInput to ImGuiSliderFlags_AlwaysClamp. Kept redirection enum (will obsolete sooner because previous name was added recently).
  - 2020/09/25 (1.79) - renamed style.TabMinWidthForUnselectedCloseButton to style.TabMinWidthForCloseButton.
@@ -453,10 +463,10 @@ CODE
  - 2018/08/01 (1.63) - renamed io.OptCursorBlink to io.ConfigCursorBlink [-> io.ConfigInputTextCursorBlink in 1.65], io.OptMacOSXBehaviors to ConfigMacOSXBehaviors for consistency.
  - 2018/07/22 (1.63) - changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecisions over time.
  - 2018/07/08 (1.63) - style: renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
- - 2018/06/08 (1.62) - examples: the imgui_impl_xxx files have been split to separate platform (Win32, Glfw, SDL2, etc.) from renderer (DX11, OpenGL, Vulkan,  etc.).
-                       old bindings will still work as is, however prefer using the separated bindings as they will be updated to support multi-viewports.
-                       when adopting new bindings follow the main.cpp code of your preferred examples/ folder to know which functions to call.
-                       in particular, note that old bindings called ImGui::NewFrame() at the end of their ImGui_ImplXXXX_NewFrame() function.
+ - 2018/06/08 (1.62) - examples: the imgui_impl_XXX files have been split to separate platform (Win32, GLFW, SDL2, etc.) from renderer (DX11, OpenGL, Vulkan,  etc.).
+                       old backends will still work as is, however prefer using the separated backends as they will be updated to support multi-viewports.
+                       when adopting new backends follow the main.cpp code of your preferred examples/ folder to know which functions to call.
+                       in particular, note that old backends called ImGui::NewFrame() at the end of their ImGui_ImplXXXX_NewFrame() function.
  - 2018/06/06 (1.62) - renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish other variants and discourage using the full set.
  - 2018/06/06 (1.62) - TreeNodeEx()/TreeNodeBehavior(): the ImGuiTreeNodeFlags_CollapsingHeader helper now include the ImGuiTreeNodeFlags_NoTreePushOnOpen flag. See Changelog for details.
  - 2018/05/03 (1.61) - DragInt(): the default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
@@ -466,7 +476,7 @@ CODE
  - 2018/04/28 (1.61) - obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
                        consistent with other functions. Kept redirection functions (will obsolete).
  - 2018/04/09 (1.61) - IM_DELETE() helper function added in 1.60 doesn't clear the input _pointer_ reference, more consistent with expectation and allows passing r-value.
- - 2018/03/20 (1.60) - renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, _not_ used by core and only honored by some binding ahead of merging the Nav branch).
+ - 2018/03/20 (1.60) - renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, _not_ used by core and only honored by some backend ahead of merging the Nav branch).
  - 2018/03/12 (1.60) - removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered as the closing cross uses regular button colors now.
  - 2018/03/08 (1.60) - changed ImFont::DisplayOffset.y to default to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer. If you were adding or subtracting to ImFont::DisplayOffset check if your fonts are correctly aligned vertically.
  - 2018/03/03 (1.60) - renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
@@ -510,7 +520,7 @@ CODE
  - 2017/10/11 (1.52) - renamed AlignFirstTextHeightToWidgets() to AlignTextToFramePadding(). Kept inline redirection function (will obsolete).
  - 2017/09/26 (1.52) - renamed ImFont::Glyph to ImFontGlyph. Kept redirection typedef (will obsolete).
  - 2017/09/25 (1.52) - removed SetNextWindowPosCenter() because SetNextWindowPos() now has the optional pivot information to do the same and more. Kept redirection function (will obsolete).
- - 2017/08/25 (1.52) - io.MousePos needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing. Previously ImVec2(-1,-1) was enough but we now accept negative mouse coordinates. In your binding if you need to support unavailable mouse, make sure to replace "io.MousePos = ImVec2(-1,-1)" with "io.MousePos = ImVec2(-FLT_MAX,-FLT_MAX)".
+ - 2017/08/25 (1.52) - io.MousePos needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing. Previously ImVec2(-1,-1) was enough but we now accept negative mouse coordinates. In your backend if you need to support unavailable mouse, make sure to replace "io.MousePos = ImVec2(-1,-1)" with "io.MousePos = ImVec2(-FLT_MAX,-FLT_MAX)".
  - 2017/08/22 (1.51) - renamed IsItemHoveredRect() to IsItemRectHovered(). Kept inline redirection function (will obsolete). -> (1.52) use IsItemHovered(ImGuiHoveredFlags_RectOnly)!
                      - renamed IsMouseHoveringAnyWindow() to IsAnyWindowHovered() for consistency. Kept inline redirection function (will obsolete).
                      - renamed IsMouseHoveringWindow() to IsWindowRectHovered() for consistency. Kept inline redirection function (will obsolete).
@@ -557,7 +567,7 @@ CODE
                        you need to render your textured triangles with bilinear filtering to benefit from sub-pixel positioning of text.
  - 2015/07/08 (1.43) - switched rendering data to use indexed rendering. this is saving a fair amount of CPU/GPU and enables us to get anti-aliasing for a marginal cost.
                        this necessary change will break your rendering function! the fix should be very easy. sorry for that :(
-                     - if you are using a vanilla copy of one of the imgui_impl_XXXX.cpp provided in the example, you just need to update your copy and you can ignore the rest.
+                     - if you are using a vanilla copy of one of the imgui_impl_XXX.cpp provided in the example, you just need to update your copy and you can ignore the rest.
                      - the signature of the io.RenderDrawListsFn handler has changed!
                        old: ImGui_XXXX_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
                        new: ImGui_XXXX_RenderDrawLists(ImDrawData* draw_data).
@@ -810,7 +820,7 @@ CODE
 static const float NAV_WINDOWING_HIGHLIGHT_DELAY            = 0.20f;    // Time before the highlight and screen dimming starts fading in
 static const float NAV_WINDOWING_LIST_APPEAR_DELAY          = 0.15f;    // Time before the window list starts to appear
 
-// Window resizing from edges (when io.ConfigWindowsResizeFromEdges = true and ImGuiBackendFlags_HasMouseCursors is set in io.BackendFlags by back-end)
+// Window resizing from edges (when io.ConfigWindowsResizeFromEdges = true and ImGuiBackendFlags_HasMouseCursors is set in io.BackendFlags by backend)
 static const float WINDOWS_RESIZE_FROM_EDGES_HALF_THICKNESS = 4.0f;     // Extend outside and inside windows. Affect FindHoveredWindow().
 static const float WINDOWS_RESIZE_FROM_EDGES_FEEDBACK_TIMER = 0.04f;    // Reduce visual noise by only highlighting the border after a certain time.
 static const float WINDOWS_MOUSE_WHEEL_SCROLL_LOCK_TIMER    = 2.00f;    // Lock scrolled window (so it doesn't pick child windows that are scrolling through) for a certain time, unless mouse moved.
@@ -954,7 +964,7 @@ ImGuiStyle::ImGuiStyle()
     DisplaySafeAreaPadding  = ImVec2(3,3);      // If you cannot see the edge of your screen (e.g. on a TV) increase the safe area padding. Covers popups/tooltips as well regular windows.
     MouseCursorScale        = 1.0f;             // Scale software rendered mouse cursor (when io.MouseDrawCursor is enabled). May be removed later.
     AntiAliasedLines        = true;             // Enable anti-aliased lines/borders. Disable if you are really tight on CPU/GPU.
-    AntiAliasedLinesUseTex  = true;             // Enable anti-aliased lines/borders using textures where possible. Require back-end to render with bilinear filtering.
+    AntiAliasedLinesUseTex  = true;             // Enable anti-aliased lines/borders using textures where possible. Require backend to render with bilinear filtering.
     AntiAliasedFill         = true;             // Enable anti-aliased filled shapes (rounded rectangles, circles, etc.).
     CurveTessellationTol    = 1.25f;            // Tessellation tolerance when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
     CircleSegmentMaxError   = 1.60f;            // Maximum error (in pixels) allowed when using AddCircle()/AddCircleFilled() or drawing rounded corner rectangles with no explicit segment count specified. Decrease for higher quality but more geometry.
@@ -1040,10 +1050,6 @@ ImGuiIO::ImGuiIO()
     ImeSetInputScreenPosFn = ImeSetInputScreenPosFn_DefaultImpl;
     ImeWindowHandle = NULL;
 
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-    RenderDrawListsFn = NULL;
-#endif
-
     // Input (NB: we already have memset zero the entire structure!)
     MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
     MousePosPrev = ImVec2(-FLT_MAX, -FLT_MAX);
@@ -3312,13 +3318,31 @@ void ImGui::DestroyContext(ImGuiContext* ctx)
     IM_DELETE(ctx);
 }
 
+// No specific ordering/dependency support, will see as needed
+void ImGui::AddContextHook(ImGuiContext* ctx, const ImGuiContextHook* hook)
+{
+    ImGuiContext& g = *ctx;
+    IM_ASSERT(hook->Callback != NULL);
+    g.Hooks.push_back(*hook);
+}
+
+// Call context hooks (used by e.g. test engine)
+// We assume a small number of hooks so all stored in same array
+void ImGui::CallContextHooks(ImGuiContext* ctx, ImGuiContextHookType hook_type)
+{
+    ImGuiContext& g = *ctx;
+    for (int n = 0; n < g.Hooks.Size; n++)
+        if (g.Hooks[n].Type == hook_type)
+            g.Hooks[n].Callback(&g, &g.Hooks[n]);
+}
+
 ImGuiIO& ImGui::GetIO()
 {
     IM_ASSERT(GImGui != NULL && "No current context. Did you call ImGui::CreateContext() and ImGui::SetCurrentContext() ?");
     return GImGui->IO;
 }
 
-// Same value as passed to the old io.RenderDrawListsFn function. Valid after Render() and until the next call to NewFrame()
+// Pass this to your backend rendering function! Valid after Render() and until the next call to NewFrame()
 ImDrawData* ImGui::GetDrawData()
 {
     ImGuiContext& g = *GImGui;
@@ -3737,9 +3761,7 @@ void ImGui::NewFrame()
     IM_ASSERT(GImGui != NULL && "No current context. Did you call ImGui::CreateContext() and ImGui::SetCurrentContext() ?");
     ImGuiContext& g = *GImGui;
 
-#ifdef IMGUI_ENABLE_TEST_ENGINE
-    ImGuiTestEngineHook_PreNewFrame(&g);
-#endif
+    CallContextHooks(&g, ImGuiContextHookType_NewFramePre);
 
     // Check and assert for various common IO and Configuration mistakes
     ErrorCheckNewFrameSanityChecks();
@@ -3909,9 +3931,7 @@ void ImGui::NewFrame()
     Begin("Debug##Default");
     IM_ASSERT(g.CurrentWindow->IsFallbackWindow == true);
 
-#ifdef IMGUI_ENABLE_TEST_ENGINE
-    ImGuiTestEngineHook_PostNewFrame(&g);
-#endif
+    CallContextHooks(&g, ImGuiContextHookType_NewFramePost);
 }
 
 // [DEBUG] Item picker tool - start with DebugStartItemPicker() - useful to visually select an item and break into its call-stack.
@@ -3996,15 +4016,12 @@ void ImGui::Shutdown(ImGuiContext* context)
     if (g.SettingsLoaded && g.IO.IniFilename != NULL)
     {
         ImGuiContext* backup_context = GImGui;
-        SetCurrentContext(context);
+        SetCurrentContext(&g);
         SaveIniSettingsToDisk(g.IO.IniFilename);
         SetCurrentContext(backup_context);
     }
 
-    // Notify hooked test engine, if any
-#ifdef IMGUI_ENABLE_TEST_ENGINE
-    ImGuiTestEngineHook_Shutdown(context);
-#endif
+    CallContextHooks(&g, ImGuiContextHookType_Shutdown);
 
     // Clear everything else
     for (int i = 0; i < g.Windows.Size; i++)
@@ -4101,11 +4118,11 @@ static void AddDrawListToDrawData(ImVector<ImDrawList*>* out_list, ImDrawList* d
     // - First, make sure you are coarse clipping yourself and not trying to draw many things outside visible bounds.
     //   Be mindful that the ImDrawList API doesn't filter vertices. Use the Metrics window to inspect draw list contents.
     // - If you want large meshes with more than 64K vertices, you can either:
-    //   (A) Handle the ImDrawCmd::VtxOffset value in your renderer back-end, and set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset'.
-    //       Most example back-ends already support this from 1.71. Pre-1.71 back-ends won't.
+    //   (A) Handle the ImDrawCmd::VtxOffset value in your renderer backend, and set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset'.
+    //       Most example backends already support this from 1.71. Pre-1.71 backends won't.
     //       Some graphics API such as GL ES 1/2 don't have a way to offset the starting vertex so it is not supported for them.
-    //   (B) Or handle 32-bit indices in your renderer back-end, and uncomment '#define ImDrawIdx unsigned int' line in imconfig.h.
-    //       Most example back-ends already support this. For example, the OpenGL example code detect index size at compile-time:
+    //   (B) Or handle 32-bit indices in your renderer backend, and uncomment '#define ImDrawIdx unsigned int' line in imconfig.h.
+    //       Most example backends already support this. For example, the OpenGL example code detect index size at compile-time:
     //         glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
     //       Your own engine or render API may use different parameters or function calls to specify index sizes.
     //       2 and 4 bytes indices are generally supported by most graphics API.
@@ -4204,6 +4221,8 @@ void ImGui::EndFrame()
         return;
     IM_ASSERT(g.WithinFrameScope && "Forgot to call ImGui::NewFrame()?");
 
+    CallContextHooks(&g, ImGuiContextHookType_EndFramePre);
+
     ErrorCheckEndFrameSanityChecks();
 
     // Notify OS when our Input Method Editor cursor has moved (e.g. CJK inputs using Microsoft IME)
@@ -4270,6 +4289,8 @@ void ImGui::EndFrame()
     g.IO.MouseWheel = g.IO.MouseWheelH = 0.0f;
     g.IO.InputQueueCharacters.resize(0);
     memset(g.IO.NavInputs, 0, sizeof(g.IO.NavInputs));
+
+    CallContextHooks(&g, ImGuiContextHookType_EndFramePost);
 }
 
 void ImGui::Render()
@@ -4283,6 +4304,8 @@ void ImGui::Render()
     g.IO.MetricsRenderWindows = 0;
     g.DrawDataBuilder.Clear();
 
+    CallContextHooks(&g, ImGuiContextHookType_RenderPre);
+
     // Add background ImDrawList
     if (!g.BackgroundDrawList.VtxBuffer.empty())
         AddDrawListToDrawData(&g.DrawDataBuilder.Layers[0], &g.BackgroundDrawList);
@@ -4315,11 +4338,7 @@ void ImGui::Render()
     g.IO.MetricsRenderVertices = g.DrawData.TotalVtxCount;
     g.IO.MetricsRenderIndices = g.DrawData.TotalIdxCount;
 
-    // (Legacy) Call the Render callback function. The current prefer way is to let the user retrieve GetDrawData() and call the render function themselves.
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-    if (g.DrawData.CmdListsCount > 0 && g.IO.RenderDrawListsFn != NULL)
-        g.IO.RenderDrawListsFn(&g.DrawData);
-#endif
+    CallContextHooks(&g, ImGuiContextHookType_RenderPost);
 }
 
 // Calculate text size. Text can be multi-line. Optionally ignore text after a ## marker.
@@ -4428,7 +4447,7 @@ int ImGui::GetKeyIndex(ImGuiKey imgui_key)
 }
 
 // Note that dear imgui doesn't know the semantic of each entry of io.KeysDown[]!
-// Use your own indices/enums according to how your back-end/engine stored them into io.KeysDown[]!
+// Use your own indices/enums according to how your backend/engine stored them into io.KeysDown[]!
 bool ImGui::IsKeyDown(int user_key_index)
 {
     if (user_key_index < 0)
@@ -4584,7 +4603,7 @@ bool ImGui::IsAnyMouseDown()
 
 // Return the delta from the initial clicking position while the mouse button is clicked or was just released.
 // This is locked and return 0.0f until the mouse moves past a distance threshold at least once.
-// NB: This is only valid if IsMousePosValid(). Back-ends in theory should always keep mouse position valid when dragging even outside the client window.
+// NB: This is only valid if IsMousePosValid(). backends in theory should always keep mouse position valid when dragging even outside the client window.
 ImVec2 ImGui::GetMouseDragDelta(ImGuiMouseButton button, float lock_threshold)
 {
     ImGuiContext& g = *GImGui;
@@ -6883,7 +6902,7 @@ static void ImGui::ErrorCheckNewFrameSanityChecks()
     if (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard)
         IM_ASSERT(g.IO.KeyMap[ImGuiKey_Space] != -1 && "ImGuiKey_Space is not mapped, required for keyboard navigation.");
 
-    // Perform simple check: the beta io.ConfigWindowsResizeFromEdges option requires back-end to honor mouse cursor changes and set the ImGuiBackendFlags_HasMouseCursors flag accordingly.
+    // Perform simple check: the beta io.ConfigWindowsResizeFromEdges option requires backend to honor mouse cursor changes and set the ImGuiBackendFlags_HasMouseCursors flag accordingly.
     if (g.IO.ConfigWindowsResizeFromEdges && !(g.IO.BackendFlags & ImGuiBackendFlags_HasMouseCursors))
         g.IO.ConfigWindowsResizeFromEdges = false;
 }
@@ -6893,7 +6912,7 @@ static void ImGui::ErrorCheckEndFrameSanityChecks()
     ImGuiContext& g = *GImGui;
 
     // Verify that io.KeyXXX fields haven't been tampered with. Key mods should not be modified between NewFrame() and EndFrame()
-    // One possible reason leading to this assert is that your back-ends update inputs _AFTER_ NewFrame().
+    // One possible reason leading to this assert is that your backends update inputs _AFTER_ NewFrame().
     const ImGuiKeyModFlags expected_key_mod_flags = GetMergedKeyModFlags();
     IM_ASSERT(g.IO.KeyMods == expected_key_mod_flags && "Mismatching io.KeyCtrl/io.KeyShift/io.KeyAlt/io.KeySuper vs io.KeyMods");
     IM_UNUSED(expected_key_mod_flags);
@@ -8558,7 +8577,7 @@ static ImVec2 ImGui::NavCalcPreferredRefPos()
         const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
         ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x * 4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
         ImRect visible_rect = GetViewportRect();
-        return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
+        return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in backend might be lossy and result in undesirable non-zero delta.
     }
 }
 
@@ -9200,7 +9219,7 @@ static void ImGui::NavUpdateWindowing()
     }
 
     // Keyboard: Press and Release ALT to toggle menu layer
-    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
+    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of backend clearing releases all keys on ALT-TAB
     if (IsNavInputTest(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Pressed))
         g.NavWindowingToggleLayer = true;
     if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && g.NavWindowingToggleLayer && IsNavInputTest(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))

3rdparty/dear-imgui/imgui.h

@@ -1,4 +1,4 @@
-// dear imgui, v1.79
+// dear imgui, v1.80 WIP
 // (headers)
 
 // Help:
@@ -59,12 +59,12 @@ Index of this file:
 
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens)
-#define IMGUI_VERSION               "1.79"
-#define IMGUI_VERSION_NUM           17900
+#define IMGUI_VERSION               "1.80 WIP"
+#define IMGUI_VERSION_NUM           17905
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx))
 
 // Define attributes of all API symbols declarations (e.g. for DLL under Windows)
-// IMGUI_API is used for core imgui functions, IMGUI_IMPL_API is used for the default bindings files (imgui_impl_xxx.h)
+// IMGUI_API is used for core imgui functions, IMGUI_IMPL_API is used for the default backends files (imgui_impl_xxx.h)
 // Using dear imgui via a shared library is not recommended, because we don't guarantee backward nor forward ABI compatibility (also function call overhead, as dear imgui is a call-heavy API)
 #ifndef IMGUI_API
 #define IMGUI_API
@@ -172,7 +172,7 @@ typedef int ImGuiWindowFlags;       // -> enum ImGuiWindowFlags_     // Flags: f
 
 // Other types
 #ifndef ImTextureID                 // ImTextureID [configurable type: override in imconfig.h with '#define ImTextureID xxx']
-typedef void* ImTextureID;          // User data for rendering back-end to identify a texture. This is whatever to you want it to be! read the FAQ about ImTextureID for details.
+typedef void* ImTextureID;          // User data for rendering backend to identify a texture. This is whatever to you want it to be! read the FAQ about ImTextureID for details.
 #endif
 typedef unsigned int ImGuiID;       // A unique ID used by widgets, typically hashed from a stack of string.
 typedef int (*ImGuiInputTextCallback)(ImGuiInputTextCallbackData* data);
@@ -251,7 +251,7 @@ namespace ImGui
     IMGUI_API ImGuiStyle&   GetStyle();                                 // access the Style structure (colors, sizes). Always use PushStyleCol(), PushStyleVar() to modify style mid-frame!
     IMGUI_API void          NewFrame();                                 // start a new Dear ImGui frame, you can submit any command from this point until Render()/EndFrame().
     IMGUI_API void          EndFrame();                                 // ends the Dear ImGui frame. automatically called by Render(). If you don't need to render data (skipping rendering) you may call EndFrame() without Render()... but you'll have wasted CPU already! If you don't need to render, better to not create any windows and not call NewFrame() at all!
-    IMGUI_API void          Render();                                   // ends the Dear ImGui frame, finalize the draw data. You can get call GetDrawData() to obtain it and run your rendering function (up to v1.60, this used to call io.RenderDrawListsFn(). Nowadays, we allow and prefer calling your render function yourself.)
+    IMGUI_API void          Render();                                   // ends the Dear ImGui frame, finalize the draw data. You can then get call GetDrawData().
     IMGUI_API ImDrawData*   GetDrawData();                              // valid after Render() and until the next call to NewFrame(). this is what you have to render.
 
     // Demo, Debug, Information
@@ -733,7 +733,7 @@ namespace ImGui
     IMGUI_API void          ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b);
 
     // Inputs Utilities: Keyboard
-    // - For 'int user_key_index' you can use your own indices/enums according to how your back-end/engine stored them in io.KeysDown[].
+    // - For 'int user_key_index' you can use your own indices/enums according to how your backend/engine stored them in io.KeysDown[].
     // - We don't know the meaning of those value. You can use GetKeyIndex() to map a ImGuiKey_ value into the user index.
     IMGUI_API int           GetKeyIndex(ImGuiKey imgui_key);                                    // map ImGuiKey_* values into user's key index. == io.KeyMap[key]
     IMGUI_API bool          IsKeyDown(int user_key_index);                                      // is key being held. == io.KeysDown[user_key_index].
@@ -828,8 +828,7 @@ enum ImGuiWindowFlags_
     ImGuiWindowFlags_ChildMenu              = 1 << 28   // Don't use! For internal use by BeginMenu()
 
     // [Obsolete]
-    //ImGuiWindowFlags_ShowBorders          = 1 << 7,   // --> Set style.FrameBorderSize=1.0f or style.WindowBorderSize=1.0f to enable borders around items or windows.
-    //ImGuiWindowFlags_ResizeFromAnySide    = 1 << 17,  // --> Set io.ConfigWindowsResizeFromEdges=true and make sure mouse cursors are supported by back-end (io.BackendFlags & ImGuiBackendFlags_HasMouseCursors)
+    //ImGuiWindowFlags_ResizeFromAnySide    = 1 << 17,  // --> Set io.ConfigWindowsResizeFromEdges=true and make sure mouse cursors are supported by backend (io.BackendFlags & ImGuiBackendFlags_HasMouseCursors)
 };
 
 // Flags for ImGui::InputText()
@@ -1066,7 +1065,7 @@ enum ImGuiKey_
     ImGuiKey_COUNT
 };
 
-// To test io.KeyMods (which is a combination of individual fields io.KeyCtrl, io.KeyShift, io.KeyAlt set by user/back-end)
+// To test io.KeyMods (which is a combination of individual fields io.KeyCtrl, io.KeyShift, io.KeyAlt set by user/backend)
 enum ImGuiKeyModFlags_
 {
     ImGuiKeyModFlags_None       = 0,
@@ -1078,7 +1077,7 @@ enum ImGuiKeyModFlags_
 
 // Gamepad/Keyboard navigation
 // Keyboard: Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.
-// Gamepad:  Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable. Back-end: set ImGuiBackendFlags_HasGamepad and fill the io.NavInputs[] fields before calling NewFrame(). Note that io.NavInputs[] is cleared by EndFrame().
+// Gamepad:  Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable. Backend: set ImGuiBackendFlags_HasGamepad and fill the io.NavInputs[] fields before calling NewFrame(). Note that io.NavInputs[] is cleared by EndFrame().
 // Read instructions in imgui.cpp for more details. Download PNG/PSD at http://goo.gl/9LgVZW.
 enum ImGuiNavInput_
 {
@@ -1116,25 +1115,25 @@ enum ImGuiConfigFlags_
 {
     ImGuiConfigFlags_None                   = 0,
     ImGuiConfigFlags_NavEnableKeyboard      = 1 << 0,   // Master keyboard navigation enable flag. NewFrame() will automatically fill io.NavInputs[] based on io.KeysDown[].
-    ImGuiConfigFlags_NavEnableGamepad       = 1 << 1,   // Master gamepad navigation enable flag. This is mostly to instruct your imgui back-end to fill io.NavInputs[]. Back-end also needs to set ImGuiBackendFlags_HasGamepad.
-    ImGuiConfigFlags_NavEnableSetMousePos   = 1 << 2,   // Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward. Will update io.MousePos and set io.WantSetMousePos=true. If enabled you MUST honor io.WantSetMousePos requests in your binding, otherwise ImGui will react as if the mouse is jumping around back and forth.
+    ImGuiConfigFlags_NavEnableGamepad       = 1 << 1,   // Master gamepad navigation enable flag. This is mostly to instruct your imgui backend to fill io.NavInputs[]. Backend also needs to set ImGuiBackendFlags_HasGamepad.
+    ImGuiConfigFlags_NavEnableSetMousePos   = 1 << 2,   // Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward. Will update io.MousePos and set io.WantSetMousePos=true. If enabled you MUST honor io.WantSetMousePos requests in your backend, otherwise ImGui will react as if the mouse is jumping around back and forth.
     ImGuiConfigFlags_NavNoCaptureKeyboard   = 1 << 3,   // Instruct navigation to not set the io.WantCaptureKeyboard flag when io.NavActive is set.
-    ImGuiConfigFlags_NoMouse                = 1 << 4,   // Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information set by the back-end.
-    ImGuiConfigFlags_NoMouseCursorChange    = 1 << 5,   // Instruct back-end to not alter mouse cursor shape and visibility. Use if the back-end cursor changes are interfering with yours and you don't want to use SetMouseCursor() to change mouse cursor. You may want to honor requests from imgui by reading GetMouseCursor() yourself instead.
+    ImGuiConfigFlags_NoMouse                = 1 << 4,   // Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information set by the backend.
+    ImGuiConfigFlags_NoMouseCursorChange    = 1 << 5,   // Instruct backend to not alter mouse cursor shape and visibility. Use if the backend cursor changes are interfering with yours and you don't want to use SetMouseCursor() to change mouse cursor. You may want to honor requests from imgui by reading GetMouseCursor() yourself instead.
 
-    // User storage (to allow your back-end/engine to communicate to code that may be shared between multiple projects. Those flags are not used by core Dear ImGui)
+    // User storage (to allow your backend/engine to communicate to code that may be shared between multiple projects. Those flags are not used by core Dear ImGui)
     ImGuiConfigFlags_IsSRGB                 = 1 << 20,  // Application is SRGB-aware.
     ImGuiConfigFlags_IsTouchScreen          = 1 << 21   // Application is using a touch screen instead of a mouse.
 };
 
-// Back-end capabilities flags stored in io.BackendFlags. Set by imgui_impl_xxx or custom back-end.
+// Backend capabilities flags stored in io.BackendFlags. Set by imgui_impl_xxx or custom backend.
 enum ImGuiBackendFlags_
 {
     ImGuiBackendFlags_None                  = 0,
-    ImGuiBackendFlags_HasGamepad            = 1 << 0,   // Back-end Platform supports gamepad and currently has one connected.
-    ImGuiBackendFlags_HasMouseCursors       = 1 << 1,   // Back-end Platform supports honoring GetMouseCursor() value to change the OS cursor shape.
-    ImGuiBackendFlags_HasSetMousePos        = 1 << 2,   // Back-end Platform supports io.WantSetMousePos requests to reposition the OS mouse position (only used if ImGuiConfigFlags_NavEnableSetMousePos is set).
-    ImGuiBackendFlags_RendererHasVtxOffset  = 1 << 3    // Back-end Renderer supports ImDrawCmd::VtxOffset. This enables output of large meshes (64K+ vertices) while still using 16-bit indices.
+    ImGuiBackendFlags_HasGamepad            = 1 << 0,   // Backend Platform supports gamepad and currently has one connected.
+    ImGuiBackendFlags_HasMouseCursors       = 1 << 1,   // Backend Platform supports honoring GetMouseCursor() value to change the OS cursor shape.
+    ImGuiBackendFlags_HasSetMousePos        = 1 << 2,   // Backend Platform supports io.WantSetMousePos requests to reposition the OS mouse position (only used if ImGuiConfigFlags_NavEnableSetMousePos is set).
+    ImGuiBackendFlags_RendererHasVtxOffset  = 1 << 3    // Backend Renderer supports ImDrawCmd::VtxOffset. This enables output of large meshes (64K+ vertices) while still using 16-bit indices.
 };
 
 // Enumeration for PushStyleColor() / PopStyleColor()
@@ -1193,7 +1192,6 @@ enum ImGuiCol_
     // Obsolete names (will be removed)
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
     , ImGuiCol_ModalWindowDarkening = ImGuiCol_ModalWindowDimBg                      // [renamed in 1.63]
-    //, ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered// [unused since 1.60+] the close button now uses regular button colors.
 #endif
 };
 
@@ -1231,11 +1229,6 @@ enum ImGuiStyleVar_
     ImGuiStyleVar_ButtonTextAlign,     // ImVec2    ButtonTextAlign
     ImGuiStyleVar_SelectableTextAlign, // ImVec2    SelectableTextAlign
     ImGuiStyleVar_COUNT
-
-    // Obsolete names (will be removed)
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-    , ImGuiStyleVar_Count_ = ImGuiStyleVar_COUNT                    // [renamed in 1.60]
-#endif
 };
 
 // Flags for InvisibleButton() [extended in imgui_internal.h]
@@ -1325,7 +1318,7 @@ enum ImGuiMouseButton_
 };
 
 // Enumeration for GetMouseCursor()
-// User code may request binding to display given cursor by calling SetMouseCursor(), which is why we have some cursors that are marked unused here
+// User code may request backend to display given cursor by calling SetMouseCursor(), which is why we have some cursors that are marked unused here
 enum ImGuiMouseCursor_
 {
     ImGuiMouseCursor_None = -1,
@@ -1339,11 +1332,6 @@ enum ImGuiMouseCursor_
     ImGuiMouseCursor_Hand,              // (Unused by Dear ImGui functions. Use for e.g. hyperlinks)
     ImGuiMouseCursor_NotAllowed,        // When hovering something with disallowed interaction. Usually a crossed circle.
     ImGuiMouseCursor_COUNT
-
-    // Obsolete names (will be removed)
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-    , ImGuiMouseCursor_Count_ = ImGuiMouseCursor_COUNT      // [renamed in 1.60]
-#endif
 };
 
 // Enumeration for ImGui::SetWindow***(), SetNextWindow***(), SetNextItem***() functions
@@ -1487,7 +1475,7 @@ struct ImGuiStyle
     ImVec2      DisplaySafeAreaPadding;     // If you cannot see the edges of your screen (e.g. on a TV) increase the safe area padding. Apply to popups/tooltips as well regular windows. NB: Prefer configuring your TV sets correctly!
     float       MouseCursorScale;           // Scale software rendered mouse cursor (when io.MouseDrawCursor is enabled). May be removed later.
     bool        AntiAliasedLines;           // Enable anti-aliased lines/borders. Disable if you are really tight on CPU/GPU. Latched at the beginning of the frame (copied to ImDrawList).
-    bool        AntiAliasedLinesUseTex;     // Enable anti-aliased lines/borders using textures where possible. Require back-end to render with bilinear filtering. Latched at the beginning of the frame (copied to ImDrawList).
+    bool        AntiAliasedLinesUseTex;     // Enable anti-aliased lines/borders using textures where possible. Require backend to render with bilinear filtering. Latched at the beginning of the frame (copied to ImDrawList).
     bool        AntiAliasedFill;            // Enable anti-aliased edges around filled shapes (rounded rectangles, circles, etc.). Disable if you are really tight on CPU/GPU. Latched at the beginning of the frame (copied to ImDrawList).
     float       CurveTessellationTol;       // Tessellation tolerance when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
     float       CircleSegmentMaxError;      // Maximum error (in pixels) allowed when using AddCircle()/AddCircleFilled() or drawing rounded corner rectangles with no explicit segment count specified. Decrease for higher quality but more geometry.
@@ -1510,7 +1498,7 @@ struct ImGuiIO
     //------------------------------------------------------------------
 
     ImGuiConfigFlags   ConfigFlags;             // = 0              // See ImGuiConfigFlags_ enum. Set by user/application. Gamepad/keyboard navigation options, etc.
-    ImGuiBackendFlags  BackendFlags;            // = 0              // See ImGuiBackendFlags_ enum. Set by back-end (imgui_impl_xxx files or custom back-end) to communicate features supported by the back-end.
+    ImGuiBackendFlags  BackendFlags;            // = 0              // See ImGuiBackendFlags_ enum. Set by backend (imgui_impl_xxx files or custom backend) to communicate features supported by the backend.
     ImVec2      DisplaySize;                    // <unset>          // Main display size, in pixels.
     float       DeltaTime;                      // = 1.0f/60.0f     // Time elapsed since last frame, in seconds.
     float       IniSavingRate;                  // = 5.0f           // Minimum time between saving positions/sizes to .ini file, in seconds.
@@ -1531,7 +1519,7 @@ struct ImGuiIO
     ImVec2      DisplayFramebufferScale;        // = (1, 1)         // For retina display or other situations where window coordinates are different from framebuffer coordinates. This generally ends up in ImDrawData::FramebufferScale.
 
     // Miscellaneous options
-    bool        MouseDrawCursor;                // = false          // Request ImGui to draw a mouse cursor for you (if you are on a platform without a mouse cursor). Cannot be easily renamed to 'io.ConfigXXX' because this is frequently used by back-end implementations.
+    bool        MouseDrawCursor;                // = false          // Request ImGui to draw a mouse cursor for you (if you are on a platform without a mouse cursor). Cannot be easily renamed to 'io.ConfigXXX' because this is frequently used by backend implementations.
     bool        ConfigMacOSXBehaviors;          // = defined(__APPLE__) // OS X style: Text editing cursor movement using Alt instead of Ctrl, Shortcuts using Cmd/Super instead of Ctrl, Line/Text Start and End using Cmd+Arrows instead of Home/End, Double click selects by word instead of selecting whole text, Multi-selection in lists uses Cmd/Super instead of Ctrl (was called io.OptMacOSXBehaviors prior to 1.63)
     bool        ConfigInputTextCursorBlink;     // = true           // Set to false to disable blinking cursor, for users who consider it distracting. (was called: io.OptCursorBlink prior to 1.63)
     bool        ConfigWindowsResizeFromEdges;   // = true           // Enable resizing of windows from their edges and from the lower-left corner. This requires (io.BackendFlags & ImGuiBackendFlags_HasMouseCursors) because it needs mouse cursor feedback. (This used to be a per-window ImGuiWindowFlags_ResizeFromAnySide flag)
@@ -1540,15 +1528,15 @@ struct ImGuiIO
 
     //------------------------------------------------------------------
     // Platform Functions
-    // (the imgui_impl_xxxx back-end files are setting those up for you)
+    // (the imgui_impl_xxxx backend files are setting those up for you)
     //------------------------------------------------------------------
 
-    // Optional: Platform/Renderer back-end name (informational only! will be displayed in About Window) + User data for back-end/wrappers to store their own stuff.
+    // Optional: Platform/Renderer backend name (informational only! will be displayed in About Window) + User data for backend/wrappers to store their own stuff.
     const char* BackendPlatformName;            // = NULL
     const char* BackendRendererName;            // = NULL
-    void*       BackendPlatformUserData;        // = NULL           // User data for platform back-end
-    void*       BackendRendererUserData;        // = NULL           // User data for renderer back-end
-    void*       BackendLanguageUserData;        // = NULL           // User data for non C++ programming language back-end
+    void*       BackendPlatformUserData;        // = NULL           // User data for platform backend
+    void*       BackendRendererUserData;        // = NULL           // User data for renderer backend
+    void*       BackendLanguageUserData;        // = NULL           // User data for non C++ programming language backend
 
     // Optional: Access OS clipboard
     // (default to use native Win32 clipboard on Windows, otherwise uses a private clipboard. Override to access OS clipboard on other architectures)
@@ -1561,15 +1549,6 @@ struct ImGuiIO
     void        (*ImeSetInputScreenPosFn)(int x, int y);
     void*       ImeWindowHandle;                // = NULL           // (Windows) Set this to your HWND to get automatic IME cursor positioning.
 
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-    // [OBSOLETE since 1.60+] Rendering function, will be automatically called in Render(). Please call your rendering function yourself now!
-    // You can obtain the ImDrawData* by calling ImGui::GetDrawData() after Render(). See example applications if you are unsure of how to implement this.
-    void        (*RenderDrawListsFn)(ImDrawData* data);
-#else
-    // This is only here to keep ImGuiIO the same size/layout, so that IMGUI_DISABLE_OBSOLETE_FUNCTIONS can exceptionally be used outside of imconfig.h.
-    void*       RenderDrawListsFnUnused;
-#endif
-
     //------------------------------------------------------------------
     // Input - Fill before calling NewFrame()
     //------------------------------------------------------------------
@@ -1577,7 +1556,7 @@ struct ImGuiIO
     ImVec2      MousePos;                       // Mouse position, in pixels. Set to ImVec2(-FLT_MAX, -FLT_MAX) if mouse is unavailable (on another screen, etc.)
     bool        MouseDown[5];                   // Mouse buttons: 0=left, 1=right, 2=middle + extras (ImGuiMouseButton_COUNT == 5). Dear ImGui mostly uses left and right buttons. Others buttons allows us to track if the mouse is being used by your application + available to user as a convenience via IsMouse** API.
     float       MouseWheel;                     // Mouse wheel Vertical: 1 unit scrolls about 5 lines text.
-    float       MouseWheelH;                    // Mouse wheel Horizontal. Most users don't have a mouse with an horizontal wheel, may not be filled by all back-ends.
+    float       MouseWheelH;                    // Mouse wheel Horizontal. Most users don't have a mouse with an horizontal wheel, may not be filled by all backends.
     bool        KeyCtrl;                        // Keyboard modifier pressed: Control
     bool        KeyShift;                       // Keyboard modifier pressed: Shift
     bool        KeyAlt;                         // Keyboard modifier pressed: Alt
@@ -1600,7 +1579,7 @@ struct ImGuiIO
     bool        WantCaptureMouse;               // Set when Dear ImGui will use mouse inputs, in this case do not dispatch them to your main game/application (either way, always pass on mouse inputs to imgui). (e.g. unclicked mouse is hovering over an imgui window, widget is active, mouse was clicked over an imgui window, etc.).
     bool        WantCaptureKeyboard;            // Set when Dear ImGui will use keyboard inputs, in this case do not dispatch them to your main game/application (either way, always pass keyboard inputs to imgui). (e.g. InputText active, or an imgui window is focused and navigation is enabled, etc.).
     bool        WantTextInput;                  // Mobile/console: when set, you may display an on-screen keyboard. This is set by Dear ImGui when it wants textual keyboard input to happen (e.g. when a InputText widget is active).
-    bool        WantSetMousePos;                // MousePos has been altered, back-end should reposition mouse on next frame. Rarely used! Set only when ImGuiConfigFlags_NavEnableSetMousePos flag is enabled.
+    bool        WantSetMousePos;                // MousePos has been altered, backend should reposition mouse on next frame. Rarely used! Set only when ImGuiConfigFlags_NavEnableSetMousePos flag is enabled.
     bool        WantSaveIniSettings;            // When manual .ini load/save is active (io.IniFilename == NULL), this will be set to notify your application that you can call SaveIniSettingsToMemory() and save yourself. Important: clear io.WantSaveIniSettings yourself after saving!
     bool        NavActive;                      // Keyboard/Gamepad navigation is currently allowed (will handle ImGuiKey_NavXXX events) = a window is focused and it doesn't use the ImGuiWindowFlags_NoNavInputs flag.
     bool        NavVisible;                     // Keyboard/Gamepad navigation is visible and allowed (will handle ImGuiKey_NavXXX events).
@@ -1635,7 +1614,7 @@ struct ImGuiIO
     float       NavInputsDownDurationPrev[ImGuiNavInput_COUNT];
     float       PenPressure;                    // Touch/Pen pressure (0.0f to 1.0f, should be >0.0f only when MouseDown[0] == true). Helper storage currently unused by Dear ImGui.
     ImWchar16   InputQueueSurrogate;            // For AddInputCharacterUTF16
-    ImVector<ImWchar> InputQueueCharacters;     // Queue of _characters_ input (obtained by platform back-end). Fill using AddInputCharacter() helper.
+    ImVector<ImWchar> InputQueueCharacters;     // Queue of _characters_ input (obtained by platform backend). Fill using AddInputCharacter() helper.
 
     IMGUI_API   ImGuiIO();
 };
@@ -1753,14 +1732,6 @@ namespace ImGui
     static inline void  SetScrollHere(float center_ratio=0.5f){ SetScrollHereY(center_ratio); }
     // OBSOLETED in 1.63 (between Aug 2018 and Sept 2018)
     static inline bool  IsItemDeactivatedAfterChange()        { return IsItemDeactivatedAfterEdit(); }
-    // OBSOLETED in 1.61 (between Apr 2018 and Aug 2018)
-    IMGUI_API bool      InputFloat(const char* label, float* v, float step, float step_fast, int decimal_precision, ImGuiInputTextFlags flags = 0); // Use the 'const char* format' version instead of 'decimal_precision'!
-    IMGUI_API bool      InputFloat2(const char* label, float v[2], int decimal_precision, ImGuiInputTextFlags flags = 0);
-    IMGUI_API bool      InputFloat3(const char* label, float v[3], int decimal_precision, ImGuiInputTextFlags flags = 0);
-    IMGUI_API bool      InputFloat4(const char* label, float v[4], int decimal_precision, ImGuiInputTextFlags flags = 0);
-    // OBSOLETED in 1.60 (between Dec 2017 and Apr 2018)
-    static inline bool  IsAnyWindowFocused()                  { return IsWindowFocused(ImGuiFocusedFlags_AnyWindow); }
-    static inline bool  IsAnyWindowHovered()                  { return IsWindowHovered(ImGuiHoveredFlags_AnyWindow); }
 }
 typedef ImGuiInputTextCallback      ImGuiTextEditCallback;    // OBSOLETED in 1.63 (from Aug 2018): made the names consistent
 typedef ImGuiInputTextCallbackData  ImGuiTextEditCallbackData;
@@ -1983,13 +1954,13 @@ struct ImColor
 //  A) Change your GPU render state,
 //  B) render a complex 3D scene inside a UI element without an intermediate texture/render target, etc.
 // The expected behavior from your rendering function is 'if (cmd.UserCallback != NULL) { cmd.UserCallback(parent_list, cmd); } else { RenderTriangles() }'
-// If you want to override the signature of ImDrawCallback, you can simply use e.g. '#define ImDrawCallback MyDrawCallback' (in imconfig.h) + update rendering back-end accordingly.
+// If you want to override the signature of ImDrawCallback, you can simply use e.g. '#define ImDrawCallback MyDrawCallback' (in imconfig.h) + update rendering backend accordingly.
 #ifndef ImDrawCallback
 typedef void (*ImDrawCallback)(const ImDrawList* parent_list, const ImDrawCmd* cmd);
 #endif
 
-// Special Draw callback value to request renderer back-end to reset the graphics/render state.
-// The renderer back-end needs to handle this special value, otherwise it will crash trying to call a function at this address.
+// Special Draw callback value to request renderer backend to reset the graphics/render state.
+// The renderer backend needs to handle this special value, otherwise it will crash trying to call a function at this address.
 // This is useful for example if you submitted callbacks which you know have altered the render state and you want it to be restored.
 // It is not done by default because they are many perfectly useful way of altering render state for imgui contents (e.g. changing shader/blending settings before an Image call).
 #define ImDrawCallback_ResetRenderState     (ImDrawCallback)(-1)
@@ -1997,7 +1968,7 @@ typedef void (*ImDrawCallback)(const ImDrawList* parent_list, const ImDrawCmd* c
 // Typically, 1 command = 1 GPU draw call (unless command is a callback)
 // - VtxOffset/IdxOffset: When 'io.BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset' is enabled,
 //   those fields allow us to render meshes larger than 64K vertices while keeping 16-bit indices.
-//   Pre-1.71 back-ends will typically ignore the VtxOffset/IdxOffset fields.
+//   Pre-1.71 backends will typically ignore the VtxOffset/IdxOffset fields.
 // - The ClipRect/TextureId/VtxOffset fields must be contiguous as we memcmp() them together (this is asserted for).
 struct ImDrawCmd
 {
@@ -2013,7 +1984,7 @@ struct ImDrawCmd
 };
 
 // Vertex index, default to 16-bit
-// To allow large meshes with 16-bit indices: set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' and handle ImDrawCmd::VtxOffset in the renderer back-end (recommended).
+// To allow large meshes with 16-bit indices: set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' and handle ImDrawCmd::VtxOffset in the renderer backend (recommended).
 // To use 32-bit indices: override with '#define ImDrawIdx unsigned int' in imconfig.h.
 #ifndef ImDrawIdx
 typedef unsigned short ImDrawIdx;
@@ -2079,7 +2050,7 @@ enum ImDrawListFlags_
 {
     ImDrawListFlags_None                    = 0,
     ImDrawListFlags_AntiAliasedLines        = 1 << 0,  // Enable anti-aliased lines/borders (*2 the number of triangles for 1.0f wide line or lines thin enough to be drawn using textures, otherwise *3 the number of triangles)
-    ImDrawListFlags_AntiAliasedLinesUseTex  = 1 << 1,  // Enable anti-aliased lines/borders using textures when possible. Require back-end to render with bilinear filtering.
+    ImDrawListFlags_AntiAliasedLinesUseTex  = 1 << 1,  // Enable anti-aliased lines/borders using textures when possible. Require backend to render with bilinear filtering.
     ImDrawListFlags_AntiAliasedFill         = 1 << 2,  // Enable anti-aliased edge around filled shapes (rounded rectangles, circles).
     ImDrawListFlags_AllowVtxOffset          = 1 << 3   // Can emit 'VtxOffset > 0' to allow large meshes. Set when 'ImGuiBackendFlags_RendererHasVtxOffset' is enabled.
 };

3rdparty/dear-imgui/imgui_demo.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.79
+// dear imgui, v1.80 WIP
 // (demo code)
 
 // Help:
@@ -381,7 +381,7 @@ void ImGui::ShowDemoWindow(bool* p_open)
         {
             ImGui::CheckboxFlags("io.ConfigFlags: NavEnableKeyboard",    (unsigned int*)&io.ConfigFlags, ImGuiConfigFlags_NavEnableKeyboard);
             ImGui::CheckboxFlags("io.ConfigFlags: NavEnableGamepad",     (unsigned int*)&io.ConfigFlags, ImGuiConfigFlags_NavEnableGamepad);
-            ImGui::SameLine(); HelpMarker("Required back-end to feed in gamepad inputs in io.NavInputs[] and set io.BackendFlags |= ImGuiBackendFlags_HasGamepad.\n\nRead instructions in imgui.cpp for details.");
+            ImGui::SameLine(); HelpMarker("Required backend to feed in gamepad inputs in io.NavInputs[] and set io.BackendFlags |= ImGuiBackendFlags_HasGamepad.\n\nRead instructions in imgui.cpp for details.");
             ImGui::CheckboxFlags("io.ConfigFlags: NavEnableSetMousePos", (unsigned int*)&io.ConfigFlags, ImGuiConfigFlags_NavEnableSetMousePos);
             ImGui::SameLine(); HelpMarker("Instruct navigation to move the mouse cursor. See comment for ImGuiConfigFlags_NavEnableSetMousePos.");
             ImGui::CheckboxFlags("io.ConfigFlags: NoMouse",              (unsigned int*)&io.ConfigFlags, ImGuiConfigFlags_NoMouse);
@@ -398,7 +398,7 @@ void ImGui::ShowDemoWindow(bool* p_open)
                     io.ConfigFlags &= ~ImGuiConfigFlags_NoMouse;
             }
             ImGui::CheckboxFlags("io.ConfigFlags: NoMouseCursorChange", (unsigned int*)&io.ConfigFlags, ImGuiConfigFlags_NoMouseCursorChange);
-            ImGui::SameLine(); HelpMarker("Instruct back-end to not alter mouse cursor shape and visibility.");
+            ImGui::SameLine(); HelpMarker("Instruct backend to not alter mouse cursor shape and visibility.");
             ImGui::Checkbox("io.ConfigInputTextCursorBlink", &io.ConfigInputTextCursorBlink);
             ImGui::SameLine(); HelpMarker("Set to false to disable blinking cursor, for users who consider it distracting");
             ImGui::Checkbox("io.ConfigWindowsResizeFromEdges", &io.ConfigWindowsResizeFromEdges);
@@ -414,10 +414,10 @@ void ImGui::ShowDemoWindow(bool* p_open)
         if (ImGui::TreeNode("Backend Flags"))
         {
             HelpMarker(
-                "Those flags are set by the back-ends (imgui_impl_xxx files) to specify their capabilities.\n"
-                "Here we expose then as read-only fields to avoid breaking interactions with your back-end.");
+                "Those flags are set by the backends (imgui_impl_xxx files) to specify their capabilities.\n"
+                "Here we expose then as read-only fields to avoid breaking interactions with your backend.");
 
-            // Make a local copy to avoid modifying actual back-end flags.
+            // Make a local copy to avoid modifying actual backend flags.
             ImGuiBackendFlags backend_flags = io.BackendFlags;
             ImGui::CheckboxFlags("io.BackendFlags: HasGamepad",           (unsigned int*)&backend_flags, ImGuiBackendFlags_HasGamepad);
             ImGui::CheckboxFlags("io.BackendFlags: HasMouseCursors",      (unsigned int*)&backend_flags, ImGuiBackendFlags_HasMouseCursors);
@@ -902,8 +902,8 @@ static void ShowDemoWindowWidgets()
 
         // Below we are displaying the font texture because it is the only texture we have access to inside the demo!
         // Remember that ImTextureID is just storage for whatever you want it to be. It is essentially a value that
-        // will be passed to the rendering back-end via the ImDrawCmd structure.
-        // If you use one of the default imgui_impl_XXXX.cpp rendering back-end, they all have comments at the top
+        // will be passed to the rendering backend via the ImDrawCmd structure.
+        // If you use one of the default imgui_impl_XXXX.cpp rendering backend, they all have comments at the top
         // of their respective source file to specify what they expect to be stored in ImTextureID, for example:
         // - The imgui_impl_dx11.cpp renderer expect a 'ID3D11ShaderResourceView*' pointer
         // - The imgui_impl_opengl3.cpp renderer expect a GLuint OpenGL texture identifier, etc.
@@ -4053,7 +4053,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
 
             ImGui::Checkbox("Anti-aliased lines use texture", &style.AntiAliasedLinesUseTex);
             ImGui::SameLine();
-            HelpMarker("Faster lines using texture data. Require back-end to render with bilinear filtering (not point/nearest filtering).");
+            HelpMarker("Faster lines using texture data. Require backend to render with bilinear filtering (not point/nearest filtering).");
 
             ImGui::Checkbox("Anti-aliased fill", &style.AntiAliasedFill);
             ImGui::PushItemWidth(100);

3rdparty/dear-imgui/imgui_draw.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.79
+// dear imgui, v1.80 WIP
 // (drawing and font code)
 
 /*

3rdparty/dear-imgui/imgui_internal.h

@@ -1,4 +1,4 @@
-// dear imgui, v1.79
+// dear imgui, v1.80 WIP
 // (internal structures/api)
 
 // You may use this file to debug, understand or extend ImGui features but we don't provide any guarantee of forward compatibility!
@@ -19,16 +19,17 @@ Index of this file:
 // [SECTION] ImDrawList support
 // [SECTION] Widgets support: flags, enums, data structures
 // [SECTION] Columns support
-// [SECTION] Settings support
 // [SECTION] Multi-select support
 // [SECTION] Docking support
 // [SECTION] Viewport support
+// [SECTION] Settings support
+// [SECTION] Generic context hooks
 // [SECTION] ImGuiContext (main imgui context)
 // [SECTION] ImGuiWindowTempData, ImGuiWindow
 // [SECTION] Tab bar, Tab item support
 // [SECTION] Table support
 // [SECTION] Internal API
-// [SECTION] Test Engine Hooks (imgui_test_engine)
+// [SECTION] Test Engine specific hooks (imgui_test_engine)
 
 */
 
@@ -93,6 +94,7 @@ struct ImGuiColorMod;               // Stacked color modifier, backup of modifie
 struct ImGuiColumnData;             // Storage data for a single column
 struct ImGuiColumns;                // Storage data for a columns set
 struct ImGuiContext;                // Main Dear ImGui context
+struct ImGuiContextHook;            // Hook for extensions like ImGuiTestEngine
 struct ImGuiDataTypeInfo;           // Type information associated to a ImGuiDataType enum
 struct ImGuiGroupData;              // Stacked storage data for BeginGroup()/EndGroup()
 struct ImGuiInputTextState;         // Internal state of the currently focused/edited text input box
@@ -1099,6 +1101,23 @@ struct ImGuiSettingsHandler
     ImGuiSettingsHandler() { memset(this, 0, sizeof(*this)); }
 };
 
+//-----------------------------------------------------------------------------
+// [SECTION] Generic context hooks
+//-----------------------------------------------------------------------------
+
+typedef void (*ImGuiContextHookCallback)(ImGuiContext* ctx, ImGuiContextHook* hook);
+enum ImGuiContextHookType { ImGuiContextHookType_NewFramePre, ImGuiContextHookType_NewFramePost, ImGuiContextHookType_EndFramePre, ImGuiContextHookType_EndFramePost, ImGuiContextHookType_RenderPre, ImGuiContextHookType_RenderPost, ImGuiContextHookType_Shutdown };
+
+struct ImGuiContextHook
+{
+    ImGuiContextHookType        Type;
+    ImGuiID                     Owner;
+    ImGuiContextHookCallback    Callback;
+    void*                       UserData;
+
+    ImGuiContextHook()          { memset(this, 0, sizeof(*this)); }
+};
+
 //-----------------------------------------------------------------------------
 // [SECTION] ImGuiContext (main imgui context)
 //-----------------------------------------------------------------------------
@@ -1301,6 +1320,7 @@ struct ImGuiContext
     ImGuiTextBuffer         SettingsIniData;                    // In memory .ini settings
     ImVector<ImGuiSettingsHandler>      SettingsHandlers;       // List of .ini settings handlers
     ImChunkStream<ImGuiWindowSettings>  SettingsWindows;        // ImGuiWindow .ini settings entries
+    ImVector<ImGuiContextHook>          Hooks;                  // Hooks for extensions (e.g. test engine)
 
     // Capture/Logging
     bool                    LogEnabled;                         // Currently capturing
@@ -1819,6 +1839,10 @@ namespace ImGui
     IMGUI_API void          UpdateMouseMovingWindowNewFrame();
     IMGUI_API void          UpdateMouseMovingWindowEndFrame();
 
+    // Generic context hooks
+    IMGUI_API void          AddContextHook(ImGuiContext* context, const ImGuiContextHook* hook);
+    IMGUI_API void          CallContextHooks(ImGuiContext* context, ImGuiContextHookType type);
+
     // Settings
     IMGUI_API void                  MarkIniSettingsDirty();
     IMGUI_API void                  MarkIniSettingsDirty(ImGuiWindow* window);
@@ -2055,13 +2079,10 @@ IMGUI_API void              ImFontAtlasBuildMultiplyCalcLookupTable(unsigned cha
 IMGUI_API void              ImFontAtlasBuildMultiplyRectAlpha8(const unsigned char table[256], unsigned char* pixels, int x, int y, int w, int h, int stride);
 
 //-----------------------------------------------------------------------------
-// [SECTION] Test Engine Hooks (imgui_test_engine)
+// [SECTION] Test Engine specific hooks (imgui_test_engine)
 //-----------------------------------------------------------------------------
 
 #ifdef IMGUI_ENABLE_TEST_ENGINE
-extern void                 ImGuiTestEngineHook_Shutdown(ImGuiContext* ctx);
-extern void                 ImGuiTestEngineHook_PreNewFrame(ImGuiContext* ctx);
-extern void                 ImGuiTestEngineHook_PostNewFrame(ImGuiContext* ctx);
 extern void                 ImGuiTestEngineHook_ItemAdd(ImGuiContext* ctx, const ImRect& bb, ImGuiID id);
 extern void                 ImGuiTestEngineHook_ItemInfo(ImGuiContext* ctx, ImGuiID id, const char* label, ImGuiItemStatusFlags flags);
 extern void                 ImGuiTestEngineHook_IdInfo(ImGuiContext* ctx, ImGuiDataType data_type, ImGuiID id, const void* data_id);
@@ -2080,6 +2101,8 @@ extern void                 ImGuiTestEngineHook_Log(ImGuiContext* ctx, const cha
 #define IMGUI_TEST_ENGINE_ID_INFO2(_ID,_TYPE,_DATA,_DATA2)  do { } while (0)
 #endif
 
+//-----------------------------------------------------------------------------
+
 #if defined(__clang__)
 #pragma clang diagnostic pop
 #elif defined(__GNUC__)

3rdparty/dear-imgui/imgui_widgets.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.79
+// dear imgui, v1.80 WIP
 // (widgets code)
 
 /*
@@ -3378,41 +3378,6 @@ bool ImGui::InputFloat4(const char* label, float v[4], const char* format, ImGui
     return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, flags);
 }
 
-// Prefer using "const char* format" directly, which is more flexible and consistent with other API.
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, int decimal_precision, ImGuiInputTextFlags flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputFloat(label, v, step, step_fast, format, flags);
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], int decimal_precision, ImGuiInputTextFlags flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], int decimal_precision, ImGuiInputTextFlags flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], int decimal_precision, ImGuiInputTextFlags flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, flags);
-}
-#endif // IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-
 bool ImGui::InputInt(const char* label, int* v, int step, int step_fast, ImGuiInputTextFlags flags)
 {
     // Hexadecimal input provided as a convenience but the flag name is awkward. Typically you'd use InputText() to parse your own data, if you want to handle prefixes.
@@ -4054,7 +4019,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
         if (state->SelectedAllMouseLock && !io.MouseDown[0])
             state->SelectedAllMouseLock = false;
 
-        // It is ill-defined whether the back-end needs to send a \t character when pressing the TAB keys.
+        // It is ill-defined whether the backend needs to send a \t character when pressing the TAB keys.
         // Win32 and GLFW naturally do it but not SDL.
         const bool ignore_char_inputs = (io.KeyCtrl && !io.KeyAlt) || (is_osx && io.KeySuper);
         if ((flags & ImGuiInputTextFlags_AllowTabInput) && IsKeyPressedMap(ImGuiKey_Tab) && !ignore_char_inputs && !io.KeyShift && !is_readonly)