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imgui.h: Comments
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imgui.h
72
imgui.h
@ -6,9 +6,26 @@
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// Read 'Programmer guide' in imgui.cpp for notes on how to setup ImGui in your codebase.
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// Get latest version at https://github.com/ocornut/imgui
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/*
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Index of this file:
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// Header mess
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// Forward declarations and basic types
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// ImGui API (Dear ImGui end-user API)
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// Flags & Enumerations
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// ImGuiStyle
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// ImGuiIO
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// Misc data structures (ImGuiInputTextCallbackData, ImGuiSizeCallbackData, ImGuiPayload)
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// Obsolete functions
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// Helpers (ImVector, ImGuiOnceUponAFrame, ImGuiTextFilter, ImGuiTextBuffer, ImGuiStorage, ImGuiListClipper, ImColor)
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// Draw List API (ImDrawCmd, ImDrawIdx, ImDrawVert, ImDrawChannel, ImDrawListFlags, ImDrawList, ImDrawData)
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// Font API (ImFontConfig, ImFontGlyph, ImFontAtlasFlags, ImFontAtlas, ImFont)
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*/
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#pragma once
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// Configuration file (edit imconfig.h or define IMGUI_USER_CONFIG to set your own filename)
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// Configuration file (edit imconfig.h or define IMGUI_USER_CONFIG to your own filename)
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#ifdef IMGUI_USER_CONFIG
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#include IMGUI_USER_CONFIG
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#endif
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@ -16,6 +33,10 @@
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#include "imconfig.h"
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#endif
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//-----------------------------------------------------------------------------
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// Header mess
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//-----------------------------------------------------------------------------
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#include <float.h> // FLT_MAX
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#include <stdarg.h> // va_list
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#include <stddef.h> // ptrdiff_t, NULL
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@ -36,7 +57,7 @@
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#define IMGUI_IMPL_API IMGUI_API
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#endif
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// Helpers
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// Helper Macros
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#ifndef IM_ASSERT
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#include <assert.h>
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#define IM_ASSERT(_EXPR) assert(_EXPR) // You can override the default assert handler by editing imconfig.h
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@ -51,6 +72,7 @@
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#define IM_ARRAYSIZE(_ARR) ((int)(sizeof(_ARR)/sizeof(*_ARR))) // Size of a static C-style array. Don't use on pointers!
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#define IM_OFFSETOF(_TYPE,_MEMBER) ((size_t)&(((_TYPE*)0)->_MEMBER)) // Offset of _MEMBER within _TYPE. Standardized as offsetof() in modern C++.
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// Warnings
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#if defined(__clang__)
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wold-style-cast"
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@ -59,7 +81,10 @@
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#pragma GCC diagnostic ignored "-Wclass-memaccess"
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#endif
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// Forward declarations
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//-----------------------------------------------------------------------------
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// Forward declarations and basic types
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//-----------------------------------------------------------------------------
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struct ImDrawChannel; // Temporary storage for outputting drawing commands out of order, used by ImDrawList::ChannelsSplit()
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struct ImDrawCmd; // A single draw command within a parent ImDrawList (generally maps to 1 GPU draw call)
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struct ImDrawData; // All draw command lists required to render the frame
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@ -153,8 +178,11 @@ struct ImVec4
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#endif
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};
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// Dear ImGui end-user API
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// (In a namespace so you can add extra functions in your own separate file. Please don't modify imgui.cpp/.h!)
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//-----------------------------------------------------------------------------
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// ImGui: Dear ImGui end-user API
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// (Inside a namespace so you can add extra functions in your own separate file. Please don't modify imgui.cpp/.h!)
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//-----------------------------------------------------------------------------
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namespace ImGui
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{
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// Context creation and access
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@ -609,6 +637,10 @@ namespace ImGui
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} // namespace ImGui
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//-----------------------------------------------------------------------------
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// Flags & Enumerations
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//-----------------------------------------------------------------------------
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// Flags for ImGui::Begin()
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enum ImGuiWindowFlags_
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{
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@ -1031,7 +1063,8 @@ enum ImGuiMouseCursor_
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#endif
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};
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// Enumateration representation a Condition for ImGui::SetWindow***(), SetNextWindow***(), SetNextTreeNode***() functions
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// Enumateration for ImGui::SetWindow***(), SetNextWindow***(), SetNextTreeNode***() functions
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// Represent a condition.
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// Important: Treat as a regular enum! Do NOT combine multiple values using binary operators! All the functions above treat 0 as a shortcut to ImGuiCond_Always.
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enum ImGuiCond_
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{
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@ -1046,8 +1079,13 @@ enum ImGuiCond_
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#endif
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};
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//-----------------------------------------------------------------------------
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// ImGuiStyle
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// You may modify the ImGui::GetStyle() main instance during initialization and before NewFrame().
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// During the frame, use ImGui::PushStyleVar(ImGuiStyleVar_XXXX)/PopStyleVar() to alter the main style values, and ImGui::PushStyleColor(ImGuiCol_XXX)/PopStyleColor() for colors.
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// During the frame, use ImGui::PushStyleVar(ImGuiStyleVar_XXXX)/PopStyleVar() to alter the main style values,
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// and ImGui::PushStyleColor(ImGuiCol_XXX)/PopStyleColor() for colors.
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//-----------------------------------------------------------------------------
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struct ImGuiStyle
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{
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float Alpha; // Global alpha applies to everything in ImGui.
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@ -1085,8 +1123,12 @@ struct ImGuiStyle
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IMGUI_API void ScaleAllSizes(float scale_factor);
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};
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// This is where your app communicate with Dear ImGui. Access via ImGui::GetIO().
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// Read 'Programmer guide' section in .cpp file for general usage.
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//-----------------------------------------------------------------------------
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// ImGuiIO
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// Communicate most settings and inputs/outputs to Dear ImGui using this structure.
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// Access via ImGui::GetIO(). Read 'Programmer guide' section in .cpp file for general usage.
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//-----------------------------------------------------------------------------
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struct ImGuiIO
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{
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//------------------------------------------------------------------
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@ -1209,6 +1251,10 @@ struct ImGuiIO
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IMGUI_API ImGuiIO();
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};
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//-----------------------------------------------------------------------------
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// Misc data structures
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//-----------------------------------------------------------------------------
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// Shared state of InputText(), passed as an argument to your callback when a ImGuiInputTextFlags_Callback* flag is used.
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// The callback function should return 0 by default.
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// Callbacks (follow a flag name and see comments in ImGuiInputTextFlags_ declarations for more details)
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@ -1254,7 +1300,7 @@ struct ImGuiSizeCallbackData
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ImVec2 DesiredSize; // Read-write. Desired size, based on user's mouse position. Write to this field to restrain resizing.
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};
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// Data payload for Drag and Drop operations
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// Data payload for Drag and Drop operations: AcceptDragDropPayload(), GetDragDropPayload()
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struct ImGuiPayload
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{
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// Members
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@ -1578,7 +1624,7 @@ struct ImColor
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};
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//-----------------------------------------------------------------------------
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// Draw List
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// Draw List API (ImDrawCmd, ImDrawIdx, ImDrawVert, ImDrawChannel, ImDrawListFlags, ImDrawList, ImDrawData)
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// Hold a series of drawing commands. The user provides a renderer for ImDrawData which essentially contains an array of ImDrawList.
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//-----------------------------------------------------------------------------
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@ -1764,6 +1810,10 @@ struct ImDrawData
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IMGUI_API void ScaleClipRects(const ImVec2& sc); // Helper to scale the ClipRect field of each ImDrawCmd. Use if your final output buffer is at a different scale than ImGui expects, or if there is a difference between your window resolution and framebuffer resolution.
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};
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//-----------------------------------------------------------------------------
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// Font API (ImFontConfig, ImFontGlyph, ImFontAtlasFlags, ImFontAtlas, ImFont)
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//-----------------------------------------------------------------------------
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struct ImFontConfig
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{
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void* FontData; // // TTF/OTF data
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