imgui/imguizmo: bump to latest

skeleton/CMakeLists.txt

@@ -24,6 +24,7 @@ add_library(librw_skeleton
     imgui/ImGuizmo.h
 )
 add_library(librw::skeleton ALIAS librw_skeleton)
+target_compile_features(librw_skeleton PUBLIC cxx_std_11)
 
 set_target_properties(librw_skeleton
     PROPERTIES

skeleton/imgui/ImGuizmo.h

@@ -1,20 +1,20 @@
 // https://github.com/CedricGuillemet/ImGuizmo
-// v 1.61 WIP
+// v 1.89 WIP
 //
 // The MIT License(MIT)
-// 
+//
 // Copyright(c) 2021 Cedric Guillemet
-// 
+//
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files(the "Software"), to deal
 // in the Software without restriction, including without limitation the rights
 // to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
 // copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions :
-// 
+//
 // The above copyright notice and this permission notice shall be included in all
 // copies or substantial portions of the Software.
-// 
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
@@ -111,7 +111,11 @@ void EditTransform(const Camera& camera, matrix_t& matrix)
 #define IMGUI_API
 #endif
 
-namespace ImGuizmo
+#ifndef IMGUIZMO_NAMESPACE
+#define IMGUIZMO_NAMESPACE ImGuizmo
+#endif
+
+namespace IMGUIZMO_NAMESPACE
 {
    // call inside your own window and before Manipulate() in order to draw gizmo to that window.
    // Or pass a specific ImDrawList to draw to (e.g. ImGui::GetForegroundDrawList()).
@@ -132,6 +136,9 @@ namespace ImGuizmo
    // return true if mouse IsOver or if the gizmo is in moving state
    IMGUI_API bool IsUsing();
 
+   // return true if any gizmo is in moving state
+   IMGUI_API bool IsUsingAny();
+
    // enable/disable the gizmo. Stay in the state until next call to Enable.
    // gizmo is rendered with gray half transparent color when disabled
    IMGUI_API void Enable(bool enable);
@@ -176,9 +183,15 @@ namespace ImGuizmo
       SCALE_Y          = (1u << 8),
       SCALE_Z          = (1u << 9),
       BOUNDS           = (1u << 10),
+      SCALE_XU         = (1u << 11),
+      SCALE_YU         = (1u << 12),
+      SCALE_ZU         = (1u << 13),
+
       TRANSLATE = TRANSLATE_X | TRANSLATE_Y | TRANSLATE_Z,
       ROTATE = ROTATE_X | ROTATE_Y | ROTATE_Z | ROTATE_SCREEN,
-      SCALE = SCALE_X | SCALE_Y | SCALE_Z
+      SCALE = SCALE_X | SCALE_Y | SCALE_Z,
+      SCALEU = SCALE_XU | SCALE_YU | SCALE_ZU, // universal
+      UNIVERSAL = TRANSLATE | ROTATE | SCALEU
    };
 
    inline OPERATION operator|(OPERATION lhs, OPERATION rhs)
@@ -200,6 +213,9 @@ namespace ImGuizmo
    //
    IMGUI_API void ViewManipulate(float* view, float length, ImVec2 position, ImVec2 size, ImU32 backgroundColor);
 
+   // use this version if you did not call Manipulate before and you are just using ViewManipulate
+   IMGUI_API void ViewManipulate(float* view, const float* projection, OPERATION operation, MODE mode, float* matrix, float length, ImVec2 position, ImVec2 size, ImU32 backgroundColor);
+
    IMGUI_API void SetID(int id);
 
    // return true if the cursor is over the operation's gizmo
@@ -210,4 +226,47 @@ namespace ImGuizmo
    // When true (default), the guizmo axis flip for better visibility
    // When false, they always stay along the positive world/local axis
    IMGUI_API void AllowAxisFlip(bool value);
+
+   // Configure the limit where axis are hidden
+   IMGUI_API void SetAxisLimit(float value);
+   // Configure the limit where planes are hiden
+   IMGUI_API void SetPlaneLimit(float value);
+
+   enum COLOR
+   {
+      DIRECTION_X,      // directionColor[0]
+      DIRECTION_Y,      // directionColor[1]
+      DIRECTION_Z,      // directionColor[2]
+      PLANE_X,          // planeColor[0]
+      PLANE_Y,          // planeColor[1]
+      PLANE_Z,          // planeColor[2]
+      SELECTION,        // selectionColor
+      INACTIVE,         // inactiveColor
+      TRANSLATION_LINE, // translationLineColor
+      SCALE_LINE,
+      ROTATION_USING_BORDER,
+      ROTATION_USING_FILL,
+      HATCHED_AXIS_LINES,
+      TEXT,
+      TEXT_SHADOW,
+      COUNT
+   };
+
+   struct Style
+   {
+      IMGUI_API Style();
+
+      float TranslationLineThickness;   // Thickness of lines for translation gizmo
+      float TranslationLineArrowSize;   // Size of arrow at the end of lines for translation gizmo
+      float RotationLineThickness;      // Thickness of lines for rotation gizmo
+      float RotationOuterLineThickness; // Thickness of line surrounding the rotation gizmo
+      float ScaleLineThickness;         // Thickness of lines for scale gizmo
+      float ScaleLineCircleSize;        // Size of circle at the end of lines for scale gizmo
+      float HatchedAxisLineThickness;   // Thickness of hatched axis lines
+      float CenterCircleSize;           // Size of circle at the center of the translate/scale gizmo
+
+      ImVec4 Colors[COLOR::COUNT];
+   };
+
+   IMGUI_API Style& GetStyle();
 }

skeleton/imgui/imconfig.h

@@ -1,5 +1,5 @@
 //-----------------------------------------------------------------------------
-// COMPILE-TIME OPTIONS FOR DEAR IMGUI
+// DEAR IMGUI COMPILE-TIME OPTIONS
 // Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via the ImGuiIO structure.
 // You can use ImGui::SetAllocatorFunctions() before calling ImGui::CreateContext() to rewire memory allocation functions.
 //-----------------------------------------------------------------------------
@@ -9,7 +9,7 @@
 // You need to make sure that configuration settings are defined consistently _everywhere_ Dear ImGui is used, which include the imgui*.cpp
 // files but also _any_ of your code that uses Dear ImGui. This is because some compile-time options have an affect on data structures.
 // Defining those options in imconfig.h will ensure every compilation unit gets to see the same data structure layouts.
-// Call IMGUI_CHECKVERSION() from your .cpp files to verify that the data structures your files are using are matching the ones imgui.cpp is using.
+// Call IMGUI_CHECKVERSION() from your .cpp file to verify that the data structures your files are using are matching the ones imgui.cpp is using.
 //-----------------------------------------------------------------------------
 
 #pragma once
@@ -21,56 +21,74 @@
 
 //---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
 // Using Dear ImGui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.
-// DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
+// - Windows DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
-// for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
+//   for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
-//#define IMGUI_API __declspec( dllexport )
+//#define IMGUI_API __declspec(dllexport)                   // MSVC Windows: DLL export
-//#define IMGUI_API __declspec( dllimport )
+//#define IMGUI_API __declspec(dllimport)                   // MSVC Windows: DLL import
+//#define IMGUI_API __attribute__((visibility("default")))  // GCC/Clang: override visibility when set is hidden
 
-//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to avoid using soon-to-be obsolete function/names.
+//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to clean your code of obsolete function/names.
 //#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+//#define IMGUI_DISABLE_OBSOLETE_KEYIO                      // 1.87+ disable legacy io.KeyMap[]+io.KeysDown[] in favor io.AddKeyEvent(). This is automatically done by IMGUI_DISABLE_OBSOLETE_FUNCTIONS.
 
-//---- Disable all of Dear ImGui or don't implement standard windows.
+//---- Disable all of Dear ImGui or don't implement standard windows/tools.
-// It is very strongly recommended to NOT disable the demo windows during development. Please read comments in imgui_demo.cpp.
+// It is very strongly recommended to NOT disable the demo windows and debug tool during development. They are extremely useful in day to day work. Please read comments in imgui_demo.cpp.
 //#define IMGUI_DISABLE                                     // Disable everything: all headers and source files will be empty.
-//#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty. Not recommended.
+//#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty.
-//#define IMGUI_DISABLE_METRICS_WINDOW                      // Disable metrics/debugger window: ShowMetricsWindow() will be empty.
+//#define IMGUI_DISABLE_DEBUG_TOOLS                         // Disable metrics/debugger and other debug tools: ShowMetricsWindow(), ShowDebugLogWindow() and ShowIDStackToolWindow() will be empty.
 
 //---- Don't implement some functions to reduce linkage requirements.
 //#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc. (user32.lib/.a, kernel32.lib/.a)
-//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] Don't implement default IME handler. Won't use and link with ImmGetContext/ImmSetCompositionWindow. (imm32.lib/.a)
+//#define IMGUI_ENABLE_WIN32_DEFAULT_IME_FUNCTIONS          // [Win32] [Default with Visual Studio] Implement default IME handler (require imm32.lib/.a, auto-link for Visual Studio, -limm32 on command-line for MinGW)
-//#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, ime).
+//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] [Default with non-Visual Studio compilers] Don't implement default IME handler (won't require imm32.lib/.a)
+//#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, IME).
 //#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
+//#define IMGUI_DISABLE_DEFAULT_SHELL_FUNCTIONS             // Don't implement default io.PlatformOpenInShellFn() handler (Win32: ShellExecute(), require shell32.lib/.a, Mac/Linux: use system("")).
 //#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS            // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
 //#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS              // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
 //#define IMGUI_DISABLE_FILE_FUNCTIONS                      // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle at all (replace them with dummies)
 //#define IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS              // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle so you can implement them yourself if you don't want to link with fopen/fclose/fread/fwrite. This will also disable the LogToTTY() function.
 //#define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
+//#define IMGUI_DISABLE_SSE                                 // Disable use of SSE intrinsics even if available
+
+//---- Enable Test Engine / Automation features.
+//#define IMGUI_ENABLE_TEST_ENGINE                          // Enable imgui_test_engine hooks. Generally set automatically by include "imgui_te_config.h", see Test Engine for details.
 
 //---- Include imgui_user.h at the end of imgui.h as a convenience
+// May be convenient for some users to only explicitly include vanilla imgui.h and have extra stuff included.
 //#define IMGUI_INCLUDE_IMGUI_USER_H
+//#define IMGUI_USER_H_FILENAME         "my_folder/my_imgui_user.h"
 
 //---- Pack colors to BGRA8 instead of RGBA8 (to avoid converting from one to another)
 //#define IMGUI_USE_BGRA_PACKED_COLOR
 
-//---- Use 32-bit for ImWchar (default is 16-bit) to support unicode planes 1-16. (e.g. point beyond 0xFFFF like emoticons, dingbats, symbols, shapes, ancient languages, etc...)
+//---- Use 32-bit for ImWchar (default is 16-bit) to support Unicode planes 1-16. (e.g. point beyond 0xFFFF like emoticons, dingbats, symbols, shapes, ancient languages, etc...)
 //#define IMGUI_USE_WCHAR32
 
 //---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
 // By default the embedded implementations are declared static and not available outside of Dear ImGui sources files.
 //#define IMGUI_STB_TRUETYPE_FILENAME   "my_folder/stb_truetype.h"
 //#define IMGUI_STB_RECT_PACK_FILENAME  "my_folder/stb_rect_pack.h"
+//#define IMGUI_STB_SPRINTF_FILENAME    "my_folder/stb_sprintf.h"    // only used if IMGUI_USE_STB_SPRINTF is defined.
 //#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
 //#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
+//#define IMGUI_DISABLE_STB_SPRINTF_IMPLEMENTATION                   // only disabled if IMGUI_USE_STB_SPRINTF is defined.
 
-//---- Use stb_printf's faster implementation of vsnprintf instead of the one from libc (unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined)
+//---- Use stb_sprintf.h for a faster implementation of vsnprintf instead of the one from libc (unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined)
-// Requires 'stb_sprintf.h' to be available in the include path. Compatibility checks of arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by STB sprintf.
+// Compatibility checks of arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by stb_sprintf.h.
-// #define IMGUI_USE_STB_SPRINTF
+//#define IMGUI_USE_STB_SPRINTF
 
 //---- Use FreeType to build and rasterize the font atlas (instead of stb_truetype which is embedded by default in Dear ImGui)
 // Requires FreeType headers to be available in the include path. Requires program to be compiled with 'misc/freetype/imgui_freetype.cpp' (in this repository) + the FreeType library (not provided).
-// On Windows you may use vcpkg with 'vcpkg install freetype' + 'vcpkg integrate install'.
+// On Windows you may use vcpkg with 'vcpkg install freetype --triplet=x64-windows' + 'vcpkg integrate install'.
 //#define IMGUI_ENABLE_FREETYPE
 
+//---- Use FreeType+lunasvg library to render OpenType SVG fonts (SVGinOT)
+// Requires lunasvg headers to be available in the include path + program to be linked with the lunasvg library (not provided).
+// Only works in combination with IMGUI_ENABLE_FREETYPE.
+// (implementation is based on Freetype's rsvg-port.c which is licensed under CeCILL-C Free Software License Agreement)
+//#define IMGUI_ENABLE_FREETYPE_LUNASVG
+
 //---- Use stb_truetype to build and rasterize the font atlas (default)
 // The only purpose of this define is if you want force compilation of the stb_truetype backend ALONG with the FreeType backend.
 //#define IMGUI_ENABLE_STB_TRUETYPE
@@ -78,14 +96,16 @@
 //---- Define constructor and implicit cast operators to convert back<>forth between your math types and ImVec2/ImVec4.
 // This will be inlined as part of ImVec2 and ImVec4 class declarations.
 /*
-#define IM_VEC2_CLASS_EXTRA                                                 \
+#define IM_VEC2_CLASS_EXTRA                                                     \
-        ImVec2(const MyVec2& f) { x = f.x; y = f.y; }                       \
+        constexpr ImVec2(const MyVec2& f) : x(f.x), y(f.y) {}                   \
         operator MyVec2() const { return MyVec2(x,y); }
 
-#define IM_VEC4_CLASS_EXTRA                                                 \
+#define IM_VEC4_CLASS_EXTRA                                                     \
-        ImVec4(const MyVec4& f) { x = f.x; y = f.y; z = f.z; w = f.w; }     \
+        constexpr ImVec4(const MyVec4& f) : x(f.x), y(f.y), z(f.z), w(f.w) {}   \
         operator MyVec4() const { return MyVec4(x,y,z,w); }
 */
+//---- ...Or use Dear ImGui's own very basic math operators.
+//#define IMGUI_DEFINE_MATH_OPERATORS
 
 //---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than 64K vertices.
 // Your renderer backend will need to support it (most example renderer backends support both 16/32-bit indices).
@@ -99,23 +119,18 @@
 //typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void* my_renderer_user_data);
 //#define ImDrawCallback MyImDrawCallback
 
-//---- Debug Tools: Macro to break in Debugger
+//---- Debug Tools: Macro to break in Debugger (we provide a default implementation of this in the codebase)
 // (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.)
 //#define IM_DEBUG_BREAK  IM_ASSERT(0)
 //#define IM_DEBUG_BREAK  __debugbreak()
 
-//---- Debug Tools: Have the Item Picker break in the ItemAdd() function instead of ItemHoverable(),
-// (which comes earlier in the code, will catch a few extra items, allow picking items other than Hovered one.)
-// This adds a small runtime cost which is why it is not enabled by default.
-//#define IMGUI_DEBUG_TOOL_ITEM_PICKER_EX
-
 //---- Debug Tools: Enable slower asserts
 //#define IMGUI_DEBUG_PARANOID
 
-//---- Tip: You can add extra functions within the ImGui:: namespace, here or in your own headers files.
+//---- Tip: You can add extra functions within the ImGui:: namespace from anywhere (e.g. your own sources/header files)
 /*
 namespace ImGui
 {
-    void MyFunction(const char* name, const MyMatrix44& v);
+    void MyFunction(const char* name, MyMatrix44* mtx);
 }
 */

skeleton/imgui/imstb_rectpack.h

@@ -1,15 +1,19 @@
 // [DEAR IMGUI]
-// This is a slightly modified version of stb_rect_pack.h 1.00.
+// This is a slightly modified version of stb_rect_pack.h 1.01.
-// Those changes would need to be pushed into nothings/stb:
-// - Added STBRP__CDECL
 // Grep for [DEAR IMGUI] to find the changes.
-
+// 
-// stb_rect_pack.h - v1.00 - public domain - rectangle packing
+// stb_rect_pack.h - v1.01 - public domain - rectangle packing
 // Sean Barrett 2014
 //
 // Useful for e.g. packing rectangular textures into an atlas.
 // Does not do rotation.
 //
+// Before #including,
+//
+//    #define STB_RECT_PACK_IMPLEMENTATION
+//
+// in the file that you want to have the implementation.
+//
 // Not necessarily the awesomest packing method, but better than
 // the totally naive one in stb_truetype (which is primarily what
 // this is meant to replace).
@@ -34,13 +38,14 @@
 //  Minor features
 //    Martins Mozeiko
 //    github:IntellectualKitty
-//    
+//
 //  Bugfixes / warning fixes
 //    Jeremy Jaussaud
 //    Fabian Giesen
 //
 // Version history:
 //
+//     1.01  (2021-07-11)  always use large rect mode, expose STBRP__MAXVAL in public section
 //     1.00  (2019-02-25)  avoid small space waste; gracefully fail too-wide rectangles
 //     0.99  (2019-02-07)  warning fixes
 //     0.11  (2017-03-03)  return packing success/fail result
@@ -81,11 +86,10 @@ typedef struct stbrp_context stbrp_context;
 typedef struct stbrp_node    stbrp_node;
 typedef struct stbrp_rect    stbrp_rect;
 
-#ifdef STBRP_LARGE_RECTS
 typedef int            stbrp_coord;
-#else
+
-typedef unsigned short stbrp_coord;
+#define STBRP__MAXVAL  0x7fffffff
-#endif
+// Mostly for internal use, but this is the maximum supported coordinate value.
 
 STBRP_DEF int stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
 // Assign packed locations to rectangles. The rectangles are of type
@@ -213,10 +217,9 @@ struct stbrp_context
 #define STBRP_ASSERT assert
 #endif
 
-// [DEAR IMGUI] Added STBRP__CDECL
 #ifdef _MSC_VER
 #define STBRP__NOTUSED(v)  (void)(v)
-#define STBRP__CDECL __cdecl
+#define STBRP__CDECL       __cdecl
 #else
 #define STBRP__NOTUSED(v)  (void)sizeof(v)
 #define STBRP__CDECL
@@ -262,9 +265,6 @@ STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_ou
 STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes)
 {
    int i;
-#ifndef STBRP_LARGE_RECTS
-   STBRP_ASSERT(width <= 0xffff && height <= 0xffff);
-#endif
 
    for (i=0; i < num_nodes-1; ++i)
       nodes[i].next = &nodes[i+1];
@@ -283,11 +283,7 @@ STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height,
    context->extra[0].y = 0;
    context->extra[0].next = &context->extra[1];
    context->extra[1].x = (stbrp_coord) width;
-#ifdef STBRP_LARGE_RECTS
    context->extra[1].y = (1<<30);
-#else
-   context->extra[1].y = 65535;
-#endif
    context->extra[1].next = NULL;
 }
 
@@ -433,7 +429,7 @@ static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int widt
             if (y <= best_y) {
                if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) {
                   best_x = xpos;
-                  STBRP_ASSERT(y <= best_y);
+                  //STBRP_ASSERT(y <= best_y); [DEAR IMGUI]
                   best_y = y;
                   best_waste = waste;
                   best = prev;
@@ -441,7 +437,7 @@ static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int widt
             }
          }
          tail = tail->next;
-      }         
+      }
    }
 
    fr.prev_link = best;
@@ -529,7 +525,6 @@ static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, i
    return res;
 }
 
-// [DEAR IMGUI] Added STBRP__CDECL
 static int STBRP__CDECL rect_height_compare(const void *a, const void *b)
 {
    const stbrp_rect *p = (const stbrp_rect *) a;
@@ -541,7 +536,6 @@ static int STBRP__CDECL rect_height_compare(const void *a, const void *b)
    return (p->w > q->w) ? -1 : (p->w < q->w);
 }
 
-// [DEAR IMGUI] Added STBRP__CDECL
 static int STBRP__CDECL rect_original_order(const void *a, const void *b)
 {
    const stbrp_rect *p = (const stbrp_rect *) a;
@@ -549,12 +543,6 @@ static int STBRP__CDECL rect_original_order(const void *a, const void *b)
    return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
 }
 
-#ifdef STBRP_LARGE_RECTS
-#define STBRP__MAXVAL  0xffffffff
-#else
-#define STBRP__MAXVAL  0xffff
-#endif
-
 STBRP_DEF int stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
 {
    int i, all_rects_packed = 1;
@@ -602,38 +590,38 @@ This software is available under 2 licenses -- choose whichever you prefer.
 ------------------------------------------------------------------------------
 ALTERNATIVE A - MIT License
 Copyright (c) 2017 Sean Barrett
-Permission is hereby granted, free of charge, to any person obtaining a copy of 
+Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in 
+this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to 
+the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-of the Software, and to permit persons to whom the Software is furnished to do 
+of the Software, and to permit persons to whom the Software is furnished to do
 so, subject to the following conditions:
-The above copyright notice and this permission notice shall be included in all 
+The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 ------------------------------------------------------------------------------
 ALTERNATIVE B - Public Domain (www.unlicense.org)
 This is free and unencumbered software released into the public domain.
-Anyone is free to copy, modify, publish, use, compile, sell, or distribute this 
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
-software, either in source code form or as a compiled binary, for any purpose, 
+software, either in source code form or as a compiled binary, for any purpose,
 commercial or non-commercial, and by any means.
-In jurisdictions that recognize copyright laws, the author or authors of this 
+In jurisdictions that recognize copyright laws, the author or authors of this
-software dedicate any and all copyright interest in the software to the public 
+software dedicate any and all copyright interest in the software to the public
-domain. We make this dedication for the benefit of the public at large and to 
+domain. We make this dedication for the benefit of the public at large and to
-the detriment of our heirs and successors. We intend this dedication to be an 
+the detriment of our heirs and successors. We intend this dedication to be an
-overt act of relinquishment in perpetuity of all present and future rights to 
+overt act of relinquishment in perpetuity of all present and future rights to
 this software under copyright law.
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 ------------------------------------------------------------------------------
 */

skeleton/imgui/imstb_textedit.h

@@ -1,10 +1,12 @@
 // [DEAR IMGUI]
-// This is a slightly modified version of stb_textedit.h 1.13. 
+// This is a slightly modified version of stb_textedit.h 1.14.
 // Those changes would need to be pushed into nothings/stb:
 // - Fix in stb_textedit_discard_redo (see https://github.com/nothings/stb/issues/321)
+// - Fix in stb_textedit_find_charpos to handle last line (see https://github.com/ocornut/imgui/issues/6000 + #6783)
 // Grep for [DEAR IMGUI] to find the changes.
+// - Also renamed macros used or defined outside of IMSTB_TEXTEDIT_IMPLEMENTATION block from STB_TEXTEDIT_* to IMSTB_TEXTEDIT_*
 
-// stb_textedit.h - v1.13  - public domain - Sean Barrett
+// stb_textedit.h - v1.14  - public domain - Sean Barrett
 // Development of this library was sponsored by RAD Game Tools
 //
 // This C header file implements the guts of a multi-line text-editing
@@ -19,7 +21,7 @@
 // texts, as its performance does not scale and it has limited undo).
 //
 // Non-trivial behaviors are modelled after Windows text controls.
-// 
+//
 //
 // LICENSE
 //
@@ -29,16 +31,17 @@
 // DEPENDENCIES
 //
 // Uses the C runtime function 'memmove', which you can override
-// by defining STB_TEXTEDIT_memmove before the implementation.
+// by defining IMSTB_TEXTEDIT_memmove before the implementation.
 // Uses no other functions. Performs no runtime allocations.
 //
 //
 // VERSION HISTORY
 //
+//   1.14 (2021-07-11) page up/down, various fixes
 //   1.13 (2019-02-07) fix bug in undo size management
 //   1.12 (2018-01-29) user can change STB_TEXTEDIT_KEYTYPE, fix redo to avoid crash
 //   1.11 (2017-03-03) fix HOME on last line, dragging off single-line textfield
-//   1.10 (2016-10-25) supress warnings about casting away const with -Wcast-qual
+//   1.10 (2016-10-25) suppress warnings about casting away const with -Wcast-qual
 //   1.9  (2016-08-27) customizable move-by-word
 //   1.8  (2016-04-02) better keyboard handling when mouse button is down
 //   1.7  (2015-09-13) change y range handling in case baseline is non-0
@@ -58,6 +61,7 @@
 //   Ulf Winklemann: move-by-word in 1.1
 //   Fabian Giesen: secondary key inputs in 1.5
 //   Martins Mozeiko: STB_TEXTEDIT_memmove in 1.6
+//   Louis Schnellbach: page up/down in 1.14
 //
 //   Bugfixes:
 //      Scott Graham
@@ -93,8 +97,8 @@
 //   moderate sizes. The undo system does no memory allocations, so
 //   it grows STB_TexteditState by the worst-case storage which is (in bytes):
 //
-//        [4 + 3 * sizeof(STB_TEXTEDIT_POSITIONTYPE)] * STB_TEXTEDIT_UNDOSTATE_COUNT
+//        [4 + 3 * sizeof(STB_TEXTEDIT_POSITIONTYPE)] * STB_TEXTEDIT_UNDOSTATECOUNT
-//      +          sizeof(STB_TEXTEDIT_CHARTYPE)      * STB_TEXTEDIT_UNDOCHAR_COUNT
+//      +          sizeof(STB_TEXTEDIT_CHARTYPE)      * STB_TEXTEDIT_UNDOCHARCOUNT
 //
 //
 // Implementation mode:
@@ -217,20 +221,20 @@
 //          call this with the mouse x,y on a mouse down; it will update the cursor
 //          and reset the selection start/end to the cursor point. the x,y must
 //          be relative to the text widget, with (0,0) being the top left.
-//     
+//
 //      drag:
 //          call this with the mouse x,y on a mouse drag/up; it will update the
 //          cursor and the selection end point
-//     
+//
 //      cut:
 //          call this to delete the current selection; returns true if there was
 //          one. you should FIRST copy the current selection to the system paste buffer.
 //          (To copy, just copy the current selection out of the string yourself.)
-//     
+//
 //      paste:
 //          call this to paste text at the current cursor point or over the current
 //          selection if there is one.
-//     
+//
 //      key:
 //          call this for keyboard inputs sent to the textfield. you can use it
 //          for "key down" events or for "translated" key events. if you need to
@@ -241,7 +245,7 @@
 //          clear. STB_TEXTEDIT_KEYTYPE defaults to int, but you can #define it to
 //          anything other type you wante before including.
 //
-//     
+//
 //   When rendering, you can read the cursor position and selection state from
 //   the STB_TexteditState.
 //
@@ -271,8 +275,8 @@
 ////
 ////
 
-#ifndef INCLUDE_STB_TEXTEDIT_H
+#ifndef INCLUDE_IMSTB_TEXTEDIT_H
-#define INCLUDE_STB_TEXTEDIT_H
+#define INCLUDE_IMSTB_TEXTEDIT_H
 
 ////////////////////////////////////////////////////////////////////////
 //
@@ -283,33 +287,33 @@
 // and undo state.
 //
 
-#ifndef STB_TEXTEDIT_UNDOSTATECOUNT
+#ifndef IMSTB_TEXTEDIT_UNDOSTATECOUNT
-#define STB_TEXTEDIT_UNDOSTATECOUNT   99
+#define IMSTB_TEXTEDIT_UNDOSTATECOUNT   99
 #endif
-#ifndef STB_TEXTEDIT_UNDOCHARCOUNT
+#ifndef IMSTB_TEXTEDIT_UNDOCHARCOUNT
-#define STB_TEXTEDIT_UNDOCHARCOUNT   999
+#define IMSTB_TEXTEDIT_UNDOCHARCOUNT   999
 #endif
-#ifndef STB_TEXTEDIT_CHARTYPE
+#ifndef IMSTB_TEXTEDIT_CHARTYPE
-#define STB_TEXTEDIT_CHARTYPE        int
+#define IMSTB_TEXTEDIT_CHARTYPE        int
 #endif
-#ifndef STB_TEXTEDIT_POSITIONTYPE
+#ifndef IMSTB_TEXTEDIT_POSITIONTYPE
-#define STB_TEXTEDIT_POSITIONTYPE    int
+#define IMSTB_TEXTEDIT_POSITIONTYPE    int
 #endif
 
 typedef struct
 {
    // private data
-   STB_TEXTEDIT_POSITIONTYPE  where;
+   IMSTB_TEXTEDIT_POSITIONTYPE  where;
-   STB_TEXTEDIT_POSITIONTYPE  insert_length;
+   IMSTB_TEXTEDIT_POSITIONTYPE  insert_length;
-   STB_TEXTEDIT_POSITIONTYPE  delete_length;
+   IMSTB_TEXTEDIT_POSITIONTYPE  delete_length;
    int                        char_storage;
 } StbUndoRecord;
 
 typedef struct
 {
    // private data
-   StbUndoRecord          undo_rec [STB_TEXTEDIT_UNDOSTATECOUNT];
+   StbUndoRecord          undo_rec [IMSTB_TEXTEDIT_UNDOSTATECOUNT];
-   STB_TEXTEDIT_CHARTYPE  undo_char[STB_TEXTEDIT_UNDOCHARCOUNT];
+   IMSTB_TEXTEDIT_CHARTYPE  undo_char[IMSTB_TEXTEDIT_UNDOCHARCOUNT];
    short undo_point, redo_point;
    int undo_char_point, redo_char_point;
 } StbUndoState;
@@ -368,7 +372,7 @@ typedef struct
    float ymin,ymax;         // height of row above and below baseline
    int num_chars;
 } StbTexteditRow;
-#endif //INCLUDE_STB_TEXTEDIT_H
+#endif //INCLUDE_IMSTB_TEXTEDIT_H
 
 
 ////////////////////////////////////////////////////////////////////////////
@@ -381,11 +385,11 @@ typedef struct
 
 // implementation isn't include-guarded, since it might have indirectly
 // included just the "header" portion
-#ifdef STB_TEXTEDIT_IMPLEMENTATION
+#ifdef IMSTB_TEXTEDIT_IMPLEMENTATION
 
-#ifndef STB_TEXTEDIT_memmove
+#ifndef IMSTB_TEXTEDIT_memmove
 #include <string.h>
-#define STB_TEXTEDIT_memmove memmove
+#define IMSTB_TEXTEDIT_memmove memmove
 #endif
 
 
@@ -395,7 +399,7 @@ typedef struct
 //
 
 // traverse the layout to locate the nearest character to a display position
-static int stb_text_locate_coord(STB_TEXTEDIT_STRING *str, float x, float y)
+static int stb_text_locate_coord(IMSTB_TEXTEDIT_STRING *str, float x, float y)
 {
    StbTexteditRow r;
    int n = STB_TEXTEDIT_STRINGLEN(str);
@@ -455,7 +459,7 @@ static int stb_text_locate_coord(STB_TEXTEDIT_STRING *str, float x, float y)
 }
 
 // API click: on mouse down, move the cursor to the clicked location, and reset the selection
-static void stb_textedit_click(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y)
+static void stb_textedit_click(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y)
 {
    // In single-line mode, just always make y = 0. This lets the drag keep working if the mouse
    // goes off the top or bottom of the text
@@ -473,7 +477,7 @@ static void stb_textedit_click(STB_TEXTEDIT_STRING *str, STB_TexteditState *stat
 }
 
 // API drag: on mouse drag, move the cursor and selection endpoint to the clicked location
-static void stb_textedit_drag(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y)
+static void stb_textedit_drag(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y)
 {
    int p = 0;
 
@@ -499,11 +503,11 @@ static void stb_textedit_drag(STB_TEXTEDIT_STRING *str, STB_TexteditState *state
 //
 
 // forward declarations
-static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state);
+static void stb_text_undo(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state);
-static void stb_text_redo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state);
+static void stb_text_redo(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state);
-static void stb_text_makeundo_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length);
+static void stb_text_makeundo_delete(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length);
 static void stb_text_makeundo_insert(STB_TexteditState *state, int where, int length);
-static void stb_text_makeundo_replace(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int old_length, int new_length);
+static void stb_text_makeundo_replace(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int old_length, int new_length);
 
 typedef struct
 {
@@ -515,36 +519,21 @@ typedef struct
 
 // find the x/y location of a character, and remember info about the previous row in
 // case we get a move-up event (for page up, we'll have to rescan)
-static void stb_textedit_find_charpos(StbFindState *find, STB_TEXTEDIT_STRING *str, int n, int single_line)
+static void stb_textedit_find_charpos(StbFindState *find, IMSTB_TEXTEDIT_STRING *str, int n, int single_line)
 {
    StbTexteditRow r;
    int prev_start = 0;
    int z = STB_TEXTEDIT_STRINGLEN(str);
    int i=0, first;
 
-   if (n == z) {
+   if (n == z && single_line) {
-      // if it's at the end, then find the last line -- simpler than trying to
+      // special case if it's at the end (may not be needed?)
-      // explicitly handle this case in the regular code
+      STB_TEXTEDIT_LAYOUTROW(&r, str, 0);
-      if (single_line) {
+      find->y = 0;
-         STB_TEXTEDIT_LAYOUTROW(&r, str, 0);
+      find->first_char = 0;
-         find->y = 0;
+      find->length = z;
-         find->first_char = 0;
+      find->height = r.ymax - r.ymin;
-         find->length = z;
+      find->x = r.x1;
-         find->height = r.ymax - r.ymin;
-         find->x = r.x1;
-      } else {
-         find->y = 0;
-         find->x = 0;
-         find->height = 1;
-         while (i < z) {
-            STB_TEXTEDIT_LAYOUTROW(&r, str, i);
-            prev_start = i;
-            i += r.num_chars;
-         }
-         find->first_char = i;
-         find->length = 0;
-         find->prev_first = prev_start;
-      }
       return;
    }
 
@@ -555,9 +544,16 @@ static void stb_textedit_find_charpos(StbFindState *find, STB_TEXTEDIT_STRING *s
       STB_TEXTEDIT_LAYOUTROW(&r, str, i);
       if (n < i + r.num_chars)
          break;
+      if (i + r.num_chars == z && z > 0 && STB_TEXTEDIT_GETCHAR(str, z - 1) != STB_TEXTEDIT_NEWLINE)  // [DEAR IMGUI] special handling for last line
+         break;   // [DEAR IMGUI]
       prev_start = i;
       i += r.num_chars;
       find->y += r.baseline_y_delta;
+      if (i == z) // [DEAR IMGUI]
+      {
+         r.num_chars = 0; // [DEAR IMGUI]
+         break;   // [DEAR IMGUI]
+      }
    }
 
    find->first_char = first = i;
@@ -574,7 +570,7 @@ static void stb_textedit_find_charpos(StbFindState *find, STB_TEXTEDIT_STRING *s
 #define STB_TEXT_HAS_SELECTION(s)   ((s)->select_start != (s)->select_end)
 
 // make the selection/cursor state valid if client altered the string
-static void stb_textedit_clamp(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static void stb_textedit_clamp(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
    int n = STB_TEXTEDIT_STRINGLEN(str);
    if (STB_TEXT_HAS_SELECTION(state)) {
@@ -588,7 +584,7 @@ static void stb_textedit_clamp(STB_TEXTEDIT_STRING *str, STB_TexteditState *stat
 }
 
 // delete characters while updating undo
-static void stb_textedit_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int len)
+static void stb_textedit_delete(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int len)
 {
    stb_text_makeundo_delete(str, state, where, len);
    STB_TEXTEDIT_DELETECHARS(str, where, len);
@@ -596,7 +592,7 @@ static void stb_textedit_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *sta
 }
 
 // delete the section
-static void stb_textedit_delete_selection(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static void stb_textedit_delete_selection(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
    stb_textedit_clamp(str, state);
    if (STB_TEXT_HAS_SELECTION(state)) {
@@ -633,7 +629,7 @@ static void stb_textedit_move_to_first(STB_TexteditState *state)
 }
 
 // move cursor to last character of selection
-static void stb_textedit_move_to_last(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static void stb_textedit_move_to_last(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
    if (STB_TEXT_HAS_SELECTION(state)) {
       stb_textedit_sortselection(state);
@@ -645,13 +641,13 @@ static void stb_textedit_move_to_last(STB_TEXTEDIT_STRING *str, STB_TexteditStat
 }
 
 #ifdef STB_TEXTEDIT_IS_SPACE
-static int is_word_boundary( STB_TEXTEDIT_STRING *str, int idx )
+static int is_word_boundary( IMSTB_TEXTEDIT_STRING *str, int idx )
 {
    return idx > 0 ? (STB_TEXTEDIT_IS_SPACE( STB_TEXTEDIT_GETCHAR(str,idx-1) ) && !STB_TEXTEDIT_IS_SPACE( STB_TEXTEDIT_GETCHAR(str, idx) ) ) : 1;
 }
 
 #ifndef STB_TEXTEDIT_MOVEWORDLEFT
-static int stb_textedit_move_to_word_previous( STB_TEXTEDIT_STRING *str, int c )
+static int stb_textedit_move_to_word_previous( IMSTB_TEXTEDIT_STRING *str, int c )
 {
    --c; // always move at least one character
    while( c >= 0 && !is_word_boundary( str, c ) )
@@ -666,7 +662,7 @@ static int stb_textedit_move_to_word_previous( STB_TEXTEDIT_STRING *str, int c )
 #endif
 
 #ifndef STB_TEXTEDIT_MOVEWORDRIGHT
-static int stb_textedit_move_to_word_next( STB_TEXTEDIT_STRING *str, int c )
+static int stb_textedit_move_to_word_next( IMSTB_TEXTEDIT_STRING *str, int c )
 {
    const int len = STB_TEXTEDIT_STRINGLEN(str);
    ++c; // always move at least one character
@@ -693,7 +689,7 @@ static void stb_textedit_prep_selection_at_cursor(STB_TexteditState *state)
 }
 
 // API cut: delete selection
-static int stb_textedit_cut(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static int stb_textedit_cut(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
    if (STB_TEXT_HAS_SELECTION(state)) {
       stb_textedit_delete_selection(str,state); // implicitly clamps
@@ -704,7 +700,7 @@ static int stb_textedit_cut(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 }
 
 // API paste: replace existing selection with passed-in text
-static int stb_textedit_paste_internal(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_CHARTYPE *text, int len)
+static int stb_textedit_paste_internal(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, IMSTB_TEXTEDIT_CHARTYPE *text, int len)
 {
    // if there's a selection, the paste should delete it
    stb_textedit_clamp(str, state);
@@ -716,9 +712,7 @@ static int stb_textedit_paste_internal(STB_TEXTEDIT_STRING *str, STB_TexteditSta
       state->has_preferred_x = 0;
       return 1;
    }
-   // remove the undo since we didn't actually insert the characters
+   // note: paste failure will leave deleted selection, may be restored with an undo (see https://github.com/nothings/stb/issues/734 for details)
-   if (state->undostate.undo_point)
-      --state->undostate.undo_point;
    return 0;
 }
 
@@ -727,14 +721,14 @@ static int stb_textedit_paste_internal(STB_TEXTEDIT_STRING *str, STB_TexteditSta
 #endif
 
 // API key: process a keyboard input
-static void stb_textedit_key(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_KEYTYPE key)
+static void stb_textedit_key(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_KEYTYPE key)
 {
 retry:
    switch (key) {
       default: {
          int c = STB_TEXTEDIT_KEYTOTEXT(key);
          if (c > 0) {
-            STB_TEXTEDIT_CHARTYPE ch = (STB_TEXTEDIT_CHARTYPE) c;
+            IMSTB_TEXTEDIT_CHARTYPE ch = (IMSTB_TEXTEDIT_CHARTYPE) c;
 
             // can't add newline in single-line mode
             if (c == '\n' && state->single_line)
@@ -764,7 +758,7 @@ retry:
          state->insert_mode = !state->insert_mode;
          break;
 #endif
-         
+
       case STB_TEXTEDIT_K_UNDO:
          stb_text_undo(str, state);
          state->has_preferred_x = 0;
@@ -779,7 +773,7 @@ retry:
          // if currently there's a selection, move cursor to start of selection
          if (STB_TEXT_HAS_SELECTION(state))
             stb_textedit_move_to_first(state);
-         else 
+         else
             if (state->cursor > 0)
                --state->cursor;
          state->has_preferred_x = 0;
@@ -828,7 +822,7 @@ retry:
 
 #ifdef STB_TEXTEDIT_MOVEWORDRIGHT
       case STB_TEXTEDIT_K_WORDRIGHT:
-         if (STB_TEXT_HAS_SELECTION(state)) 
+         if (STB_TEXT_HAS_SELECTION(state))
             stb_textedit_move_to_last(str, state);
          else {
             state->cursor = STB_TEXTEDIT_MOVEWORDRIGHT(str, state->cursor);
@@ -899,8 +893,8 @@ retry:
             x = row.x0;
             for (i=0; i < row.num_chars; ++i) {
                float dx = STB_TEXTEDIT_GETWIDTH(str, start, i);
-               #ifdef STB_TEXTEDIT_GETWIDTH_NEWLINE
+               #ifdef IMSTB_TEXTEDIT_GETWIDTH_NEWLINE
-               if (dx == STB_TEXTEDIT_GETWIDTH_NEWLINE)
+               if (dx == IMSTB_TEXTEDIT_GETWIDTH_NEWLINE)
                   break;
                #endif
                x += dx;
@@ -922,7 +916,7 @@ retry:
          }
          break;
       }
-         
+
       case STB_TEXTEDIT_K_UP:
       case STB_TEXTEDIT_K_UP | STB_TEXTEDIT_K_SHIFT:
       case STB_TEXTEDIT_K_PGUP:
@@ -961,8 +955,8 @@ retry:
             x = row.x0;
             for (i=0; i < row.num_chars; ++i) {
                float dx = STB_TEXTEDIT_GETWIDTH(str, find.prev_first, i);
-               #ifdef STB_TEXTEDIT_GETWIDTH_NEWLINE
+               #ifdef IMSTB_TEXTEDIT_GETWIDTH_NEWLINE
-               if (dx == STB_TEXTEDIT_GETWIDTH_NEWLINE)
+               if (dx == IMSTB_TEXTEDIT_GETWIDTH_NEWLINE)
                   break;
                #endif
                x += dx;
@@ -1014,7 +1008,7 @@ retry:
          }
          state->has_preferred_x = 0;
          break;
-         
+
 #ifdef STB_TEXTEDIT_K_TEXTSTART2
       case STB_TEXTEDIT_K_TEXTSTART2:
 #endif
@@ -1031,7 +1025,7 @@ retry:
          state->select_start = state->select_end = 0;
          state->has_preferred_x = 0;
          break;
-        
+
 #ifdef STB_TEXTEDIT_K_TEXTSTART2
       case STB_TEXTEDIT_K_TEXTSTART2 | STB_TEXTEDIT_K_SHIFT:
 #endif
@@ -1119,8 +1113,8 @@ retry:
 
 static void stb_textedit_flush_redo(StbUndoState *state)
 {
-   state->redo_point = STB_TEXTEDIT_UNDOSTATECOUNT;
+   state->redo_point = IMSTB_TEXTEDIT_UNDOSTATECOUNT;
-   state->redo_char_point = STB_TEXTEDIT_UNDOCHARCOUNT;
+   state->redo_char_point = IMSTB_TEXTEDIT_UNDOCHARCOUNT;
 }
 
 // discard the oldest entry in the undo list
@@ -1132,13 +1126,13 @@ static void stb_textedit_discard_undo(StbUndoState *state)
          int n = state->undo_rec[0].insert_length, i;
          // delete n characters from all other records
          state->undo_char_point -= n;
-         STB_TEXTEDIT_memmove(state->undo_char, state->undo_char + n, (size_t) (state->undo_char_point*sizeof(STB_TEXTEDIT_CHARTYPE)));
+         IMSTB_TEXTEDIT_memmove(state->undo_char, state->undo_char + n, (size_t) (state->undo_char_point*sizeof(IMSTB_TEXTEDIT_CHARTYPE)));
          for (i=0; i < state->undo_point; ++i)
             if (state->undo_rec[i].char_storage >= 0)
                state->undo_rec[i].char_storage -= n; // @OPTIMIZE: get rid of char_storage and infer it
       }
       --state->undo_point;
-      STB_TEXTEDIT_memmove(state->undo_rec, state->undo_rec+1, (size_t) (state->undo_point*sizeof(state->undo_rec[0])));
+      IMSTB_TEXTEDIT_memmove(state->undo_rec, state->undo_rec+1, (size_t) (state->undo_point*sizeof(state->undo_rec[0])));
    }
 }
 
@@ -1148,7 +1142,7 @@ static void stb_textedit_discard_undo(StbUndoState *state)
 // fill up even though the undo buffer didn't
 static void stb_textedit_discard_redo(StbUndoState *state)
 {
-   int k = STB_TEXTEDIT_UNDOSTATECOUNT-1;
+   int k = IMSTB_TEXTEDIT_UNDOSTATECOUNT-1;
 
    if (state->redo_point <= k) {
       // if the k'th undo state has characters, clean those up
@@ -1156,7 +1150,7 @@ static void stb_textedit_discard_redo(StbUndoState *state)
          int n = state->undo_rec[k].insert_length, i;
          // move the remaining redo character data to the end of the buffer
          state->redo_char_point += n;
-         STB_TEXTEDIT_memmove(state->undo_char + state->redo_char_point, state->undo_char + state->redo_char_point-n, (size_t) ((STB_TEXTEDIT_UNDOCHARCOUNT - state->redo_char_point)*sizeof(STB_TEXTEDIT_CHARTYPE)));
+         IMSTB_TEXTEDIT_memmove(state->undo_char + state->redo_char_point, state->undo_char + state->redo_char_point-n, (size_t) ((IMSTB_TEXTEDIT_UNDOCHARCOUNT - state->redo_char_point)*sizeof(IMSTB_TEXTEDIT_CHARTYPE)));
          // adjust the position of all the other records to account for above memmove
          for (i=state->redo_point; i < k; ++i)
             if (state->undo_rec[i].char_storage >= 0)
@@ -1164,12 +1158,12 @@ static void stb_textedit_discard_redo(StbUndoState *state)
       }
       // now move all the redo records towards the end of the buffer; the first one is at 'redo_point'
       // [DEAR IMGUI]
-      size_t move_size = (size_t)((STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_point - 1) * sizeof(state->undo_rec[0]));
+      size_t move_size = (size_t)((IMSTB_TEXTEDIT_UNDOSTATECOUNT - state->redo_point - 1) * sizeof(state->undo_rec[0]));
       const char* buf_begin = (char*)state->undo_rec; (void)buf_begin;
       const char* buf_end   = (char*)state->undo_rec + sizeof(state->undo_rec); (void)buf_end;
       IM_ASSERT(((char*)(state->undo_rec + state->redo_point)) >= buf_begin);
       IM_ASSERT(((char*)(state->undo_rec + state->redo_point + 1) + move_size) <= buf_end);
-      STB_TEXTEDIT_memmove(state->undo_rec + state->redo_point+1, state->undo_rec + state->redo_point, move_size);
+      IMSTB_TEXTEDIT_memmove(state->undo_rec + state->redo_point+1, state->undo_rec + state->redo_point, move_size);
 
       // now move redo_point to point to the new one
       ++state->redo_point;
@@ -1183,32 +1177,32 @@ static StbUndoRecord *stb_text_create_undo_record(StbUndoState *state, int numch
 
    // if we have no free records, we have to make room, by sliding the
    // existing records down
-   if (state->undo_point == STB_TEXTEDIT_UNDOSTATECOUNT)
+   if (state->undo_point == IMSTB_TEXTEDIT_UNDOSTATECOUNT)
       stb_textedit_discard_undo(state);
 
    // if the characters to store won't possibly fit in the buffer, we can't undo
-   if (numchars > STB_TEXTEDIT_UNDOCHARCOUNT) {
+   if (numchars > IMSTB_TEXTEDIT_UNDOCHARCOUNT) {
       state->undo_point = 0;
       state->undo_char_point = 0;
       return NULL;
    }
 
    // if we don't have enough free characters in the buffer, we have to make room
-   while (state->undo_char_point + numchars > STB_TEXTEDIT_UNDOCHARCOUNT)
+   while (state->undo_char_point + numchars > IMSTB_TEXTEDIT_UNDOCHARCOUNT)
       stb_textedit_discard_undo(state);
 
    return &state->undo_rec[state->undo_point++];
 }
 
-static STB_TEXTEDIT_CHARTYPE *stb_text_createundo(StbUndoState *state, int pos, int insert_len, int delete_len)
+static IMSTB_TEXTEDIT_CHARTYPE *stb_text_createundo(StbUndoState *state, int pos, int insert_len, int delete_len)
 {
    StbUndoRecord *r = stb_text_create_undo_record(state, insert_len);
    if (r == NULL)
       return NULL;
 
    r->where = pos;
-   r->insert_length = (STB_TEXTEDIT_POSITIONTYPE) insert_len;
+   r->insert_length = (IMSTB_TEXTEDIT_POSITIONTYPE) insert_len;
-   r->delete_length = (STB_TEXTEDIT_POSITIONTYPE) delete_len;
+   r->delete_length = (IMSTB_TEXTEDIT_POSITIONTYPE) delete_len;
 
    if (insert_len == 0) {
       r->char_storage = -1;
@@ -1220,7 +1214,7 @@ static STB_TEXTEDIT_CHARTYPE *stb_text_createundo(StbUndoState *state, int pos,
    }
 }
 
-static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static void stb_text_undo(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
    StbUndoState *s = &state->undostate;
    StbUndoRecord u, *r;
@@ -1247,7 +1241,7 @@ static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
       //    characters stored for *undoing* don't leave room for redo
       // if the last is true, we have to bail
 
-      if (s->undo_char_point + u.delete_length >= STB_TEXTEDIT_UNDOCHARCOUNT) {
+      if (s->undo_char_point + u.delete_length >= IMSTB_TEXTEDIT_UNDOCHARCOUNT) {
          // the undo records take up too much character space; there's no space to store the redo characters
          r->insert_length = 0;
       } else {
@@ -1256,7 +1250,7 @@ static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
          // there's definitely room to store the characters eventually
          while (s->undo_char_point + u.delete_length > s->redo_char_point) {
             // should never happen:
-            if (s->redo_point == STB_TEXTEDIT_UNDOSTATECOUNT)
+            if (s->redo_point == IMSTB_TEXTEDIT_UNDOSTATECOUNT)
                return;
             // there's currently not enough room, so discard a redo record
             stb_textedit_discard_redo(s);
@@ -1288,11 +1282,11 @@ static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
    s->redo_point--;
 }
 
-static void stb_text_redo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static void stb_text_redo(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
    StbUndoState *s = &state->undostate;
    StbUndoRecord *u, r;
-   if (s->redo_point == STB_TEXTEDIT_UNDOSTATECOUNT)
+   if (s->redo_point == IMSTB_TEXTEDIT_UNDOSTATECOUNT)
       return;
 
    // we need to do two things: apply the redo record, and create an undo record
@@ -1344,20 +1338,20 @@ static void stb_text_makeundo_insert(STB_TexteditState *state, int where, int le
    stb_text_createundo(&state->undostate, where, 0, length);
 }
 
-static void stb_text_makeundo_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length)
+static void stb_text_makeundo_delete(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length)
 {
    int i;
-   STB_TEXTEDIT_CHARTYPE *p = stb_text_createundo(&state->undostate, where, length, 0);
+   IMSTB_TEXTEDIT_CHARTYPE *p = stb_text_createundo(&state->undostate, where, length, 0);
    if (p) {
       for (i=0; i < length; ++i)
          p[i] = STB_TEXTEDIT_GETCHAR(str, where+i);
    }
 }
 
-static void stb_text_makeundo_replace(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int old_length, int new_length)
+static void stb_text_makeundo_replace(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int old_length, int new_length)
 {
    int i;
-   STB_TEXTEDIT_CHARTYPE *p = stb_text_createundo(&state->undostate, where, old_length, new_length);
+   IMSTB_TEXTEDIT_CHARTYPE *p = stb_text_createundo(&state->undostate, where, old_length, new_length);
    if (p) {
       for (i=0; i < old_length; ++i)
          p[i] = STB_TEXTEDIT_GETCHAR(str, where+i);
@@ -1369,8 +1363,8 @@ static void stb_textedit_clear_state(STB_TexteditState *state, int is_single_lin
 {
    state->undostate.undo_point = 0;
    state->undostate.undo_char_point = 0;
-   state->undostate.redo_point = STB_TEXTEDIT_UNDOSTATECOUNT;
+   state->undostate.redo_point = IMSTB_TEXTEDIT_UNDOSTATECOUNT;
-   state->undostate.redo_char_point = STB_TEXTEDIT_UNDOCHARCOUNT;
+   state->undostate.redo_char_point = IMSTB_TEXTEDIT_UNDOCHARCOUNT;
    state->select_end = state->select_start = 0;
    state->cursor = 0;
    state->has_preferred_x = 0;
@@ -1393,16 +1387,16 @@ static void stb_textedit_initialize_state(STB_TexteditState *state, int is_singl
 #pragma GCC diagnostic ignored "-Wcast-qual"
 #endif
 
-static int stb_textedit_paste(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_CHARTYPE const *ctext, int len)
+static int stb_textedit_paste(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, IMSTB_TEXTEDIT_CHARTYPE const *ctext, int len)
 {
-   return stb_textedit_paste_internal(str, state, (STB_TEXTEDIT_CHARTYPE *) ctext, len);
+   return stb_textedit_paste_internal(str, state, (IMSTB_TEXTEDIT_CHARTYPE *) ctext, len);
 }
 
 #if defined(__GNUC__) || defined(__clang__)
 #pragma GCC diagnostic pop
 #endif
 
-#endif//STB_TEXTEDIT_IMPLEMENTATION
+#endif//IMSTB_TEXTEDIT_IMPLEMENTATION
 
 /*
 ------------------------------------------------------------------------------
@@ -1410,38 +1404,38 @@ This software is available under 2 licenses -- choose whichever you prefer.
 ------------------------------------------------------------------------------
 ALTERNATIVE A - MIT License
 Copyright (c) 2017 Sean Barrett
-Permission is hereby granted, free of charge, to any person obtaining a copy of 
+Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in 
+this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to 
+the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-of the Software, and to permit persons to whom the Software is furnished to do 
+of the Software, and to permit persons to whom the Software is furnished to do
 so, subject to the following conditions:
-The above copyright notice and this permission notice shall be included in all 
+The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 ------------------------------------------------------------------------------
 ALTERNATIVE B - Public Domain (www.unlicense.org)
 This is free and unencumbered software released into the public domain.
-Anyone is free to copy, modify, publish, use, compile, sell, or distribute this 
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
-software, either in source code form or as a compiled binary, for any purpose, 
+software, either in source code form or as a compiled binary, for any purpose,
 commercial or non-commercial, and by any means.
-In jurisdictions that recognize copyright laws, the author or authors of this 
+In jurisdictions that recognize copyright laws, the author or authors of this
-software dedicate any and all copyright interest in the software to the public 
+software dedicate any and all copyright interest in the software to the public
-domain. We make this dedication for the benefit of the public at large and to 
+domain. We make this dedication for the benefit of the public at large and to
-the detriment of our heirs and successors. We intend this dedication to be an 
+the detriment of our heirs and successors. We intend this dedication to be an
-overt act of relinquishment in perpetuity of all present and future rights to 
+overt act of relinquishment in perpetuity of all present and future rights to
 this software under copyright law.
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 ------------------------------------------------------------------------------
 */