Update Dear ImGui to 1.92.6 WIP (docking) and add ImPlot 0.18 WIP

platforms/desktop-shared/Makefile.sources

@@ -22,6 +22,9 @@ SOURCES_CXX := \
     $(DESKTOP_SRC_DIR)/imgui/imgui_widgets.cpp \
     $(DESKTOP_SRC_DIR)/imgui/imgui_tables.cpp \
     $(DESKTOP_SRC_DIR)/imgui/imgui_demo.cpp \
+    $(DESKTOP_SRC_DIR)/imgui/implot.cpp \
+    $(DESKTOP_SRC_DIR)/imgui/implot_items.cpp \
+    $(DESKTOP_SRC_DIR)/imgui/implot_demo.cpp \
     $(AUDIO_SRC_DIR)/sound_queue.cpp \
     $(SRC_DIR)/Audio.cpp \
     $(SRC_DIR)/AY8910.cpp \

platforms/desktop-shared/gui.cpp

@@ -2251,7 +2251,7 @@ static void set_style(void)
     style.GrabRounding = 2.0f;
     style.TabRounding = 3.5f;
     style.TabBorderSize = 0.0f;
-    style.TabMinWidthForCloseButton = 0.0f;
+    style.TabCloseButtonMinWidthUnselected = 0.0f;
     style.ColorButtonPosition = ImGuiDir_Right;
     style.ButtonTextAlign = ImVec2(0.5f, 0.5f);
     style.SelectableTextAlign = ImVec2(0.0f, 0.0f);

platforms/desktop-shared/imgui/imconfig.h

@@ -15,7 +15,8 @@
 #pragma once
 
 //---- Define assertion handler. Defaults to calling assert().
-// If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
+// - If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
+// - Compiling with NDEBUG will usually strip out assert() to nothing, which is NOT recommended because we use asserts to notify of programmer mistakes.
 //#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
 //#define IM_ASSERT(_EXPR)  ((void)(_EXPR))     // Disable asserts
 
@@ -48,6 +49,7 @@
 //#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_DEFAULT_FONT                        // Disable default embedded font (ProggyClean.ttf), remove ~9.5 KB from output binary. AddFontDefault() will assert.
 //#define IMGUI_DISABLE_SSE                                 // Disable use of SSE intrinsics even if available
 
 //---- Enable Test Engine / Automation features.
@@ -58,9 +60,12 @@
 //#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)
+//---- Pack vertex colors as BGRA8 instead of RGBA8 (to avoid converting from one to another). Need dedicated backend support.
 //#define IMGUI_USE_BGRA_PACKED_COLOR
 
+//---- Use legacy CRC32-adler tables (used before 1.91.6), in order to preserve old .ini data that you cannot afford to invalidate.
+//#define IMGUI_USE_LEGACY_CRC32_ADLER
+
 //---- 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
 
@@ -79,13 +84,13 @@
 
 //---- 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).
+// Note that imgui_freetype.cpp may be used _without_ this define, if you manually call ImFontAtlas::SetFontLoader(). The define is simply a convenience.
 // On Windows you may use vcpkg with 'vcpkg install freetype --triplet=x64-windows' + 'vcpkg integrate install'.
 //#define IMGUI_ENABLE_FREETYPE
 
 //---- Use FreeType + plutosvg or lunasvg to render OpenType SVG fonts (SVGinOT)
 // Only works in combination with IMGUI_ENABLE_FREETYPE.
-// - lunasvg is currently easier to acquire/install, as e.g. it is part of vcpkg.
-// - plutosvg will support more fonts and may load them faster. It currently requires to be built manually but it is fairly easy. See misc/freetype/README for instructions.
+// - plutosvg is currently easier to install, as e.g. it is part of vcpkg. It will support more fonts and may load them faster. See misc/freetype/README for instructions.
 // - Both require headers to be available in the include path + program to be linked with the library code (not provided).
 // - (note: lunasvg implementation is based on Freetype's rsvg-port.c which is licensed under CeCILL-C Free Software License Agreement)
 //#define IMGUI_ENABLE_FREETYPE_PLUTOSVG
@@ -126,6 +131,10 @@
 //#define IM_DEBUG_BREAK  IM_ASSERT(0)
 //#define IM_DEBUG_BREAK  __debugbreak()
 
+//---- Debug Tools: Enable highlight ID conflicts _before_ hovering items. When io.ConfigDebugHighlightIdConflicts is set.
+// (THIS WILL SLOW DOWN DEAR IMGUI. Only use occasionally and disable after use)
+//#define IMGUI_DEBUG_HIGHLIGHT_ALL_ID_CONFLICTS
+
 //---- Debug Tools: Enable slower asserts
 //#define IMGUI_DEBUG_PARANOID