Let us start here, from square one. No, from Zero!

This commit is contained in:
smpn2
2022-09-30 22:45:51 +09:00
parent 14215af0d1
commit b7a60638a4
1005 changed files with 303069 additions and 0 deletions
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cmake_minimum_required(VERSION 3.9)
project(imgui CXX)
# dear imgui uses the C++ virtual interfaces for DirectX
remove_definitions(-DCINTERFACE)
set(IMGUI_HEADERS
imconfig.h
imgui.h
imgui_internal.h
)
set(IMGUI_SOURCES
imgui.cpp
imgui_draw.cpp
imgui_tables.cpp
imgui_widgets.cpp
imgui_demo.cpp
)
add_library(imgui STATIC ${IMGUI_HEADERS} ${IMGUI_SOURCES})
target_include_directories(imgui PRIVATE ${PROJECT_SOURCE_DIR})
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The MIT License (MIT)
Copyright (c) 2014-2019 Omar Cornut
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
AUTHORS OR COPYRIGHT HOLDERS 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 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
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//-----------------------------------------------------------------------------
// COMPILE-TIME OPTIONS FOR DEAR IMGUI
// 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.
//-----------------------------------------------------------------------------
// A) You may edit imconfig.h (and not overwrite it when updating Dear ImGui, or maintain a patch/rebased branch with your modifications to it)
// B) or '#define IMGUI_USER_CONFIG "my_imgui_config.h"' in your project and then add directives in your own file without touching this template.
//-----------------------------------------------------------------------------
// 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.
//-----------------------------------------------------------------------------
#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.
//#define IM_ASSERT(_EXPR) MyAssert(_EXPR)
#define IM_ASSERT(_EXPR) ((void)(_EXPR)) // Disable asserts
//---- 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()
// 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( dllimport )
//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to avoid using soon-to-be 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 will be folded into IMGUI_DISABLE_OBSOLETE_FUNCTIONS in a few versions.
//---- Disable all of Dear ImGui or don't implement standard windows.
// It is very strongly recommended to NOT disable the demo windows during development. 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_METRICS_WINDOW // Disable metrics/debugger and other debug tools: ShowMetricsWindow() and ShowStackToolWindow() 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_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_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_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
//---- Include imgui_user.h at the end of imgui.h as a convenience
//#define IMGUI_INCLUDE_IMGUI_USER_H
//---- Pack colors to BGRA8 instead of RGBA8 (to avoid converting from one to another)
#define IMGUI_USE_BGRA_PACKED_COLOR
//---- Performance optimization for DX9
#define IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT struct ImDrawVert { ImVec2 pos; float z; ImU32 col; ImVec2 uv; }
//---- 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 enabled
//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
//---- Use stb_sprintf.h for a faster implementation of vsnprintf instead of the one from libc (unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined)
// 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
//---- 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 --triplet=x64-windows' + 'vcpkg integrate install'.
//#define IMGUI_ENABLE_FREETYPE
//---- 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
//---- 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 \
constexpr ImVec2(const MyVec2& f) : x(f.x), y(f.y) {} \
operator MyVec2() const { return MyVec2(x,y); }
#define IM_VEC4_CLASS_EXTRA \
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); }
*/
//---- 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).
// Another way to allow large meshes while keeping 16-bit indices is to handle ImDrawCmd::VtxOffset in your renderer.
// Read about ImGuiBackendFlags_RendererHasVtxOffset for details.
//#define ImDrawIdx unsigned int
//---- Override ImDrawCallback signature (will need to modify renderer backends accordingly)
//struct ImDrawList;
//struct ImDrawCmd;
//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
// (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.
/*
namespace ImGui
{
void MyFunction(const char* name, const MyMatrix44& v);
}
*/
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#pragma once
#include <algorithm>
#include <array>
#include <cassert>
#include <cstring>
#include <filesystem>
#include <memory>
#include <set>
#include <string>
#include <vector>
#ifndef IMGUI_VERSION
# error "include imgui.h before this header"
#endif
using ImGuiFileBrowserFlags = int;
enum ImGuiFileBrowserFlags_
{
ImGuiFileBrowserFlags_SelectDirectory = 1 << 0, // select directory instead of regular file
ImGuiFileBrowserFlags_EnterNewFilename = 1 << 1, // allow user to enter new filename when selecting regular file
ImGuiFileBrowserFlags_NoModal = 1 << 2, // file browsing window is modal by default. specify this to use a popup window
ImGuiFileBrowserFlags_NoTitleBar = 1 << 3, // hide window title bar
ImGuiFileBrowserFlags_NoStatusBar = 1 << 4, // hide status bar at the bottom of browsing window
ImGuiFileBrowserFlags_CloseOnEsc = 1 << 5, // close file browser when pressing 'ESC'
ImGuiFileBrowserFlags_CreateNewDir = 1 << 6, // allow user to create new directory
ImGuiFileBrowserFlags_MultipleSelection = 1 << 7, // allow user to select multiple files. this will hide ImGuiFileBrowserFlags_EnterNewFilename
};
namespace ImGui
{
class FileBrowser
{
public:
// pwd is set to current working directory by default
explicit FileBrowser(ImGuiFileBrowserFlags flags = 0);
FileBrowser(const FileBrowser &copyFrom);
FileBrowser &operator=(const FileBrowser &copyFrom);
// set the window size (in pixels)
// default is (700, 450)
void SetWindowSize(int width, int height) noexcept;
// set the window title text
void SetTitle(std::string title);
// open the browsing window
void Open();
// close the browsing window
void Close();
// the browsing window is opened or not
bool IsOpened() const noexcept;
// display the browsing window if opened
void Display();
// returns true when there is a selected filename and the "ok" button was clicked
bool HasSelected() const noexcept;
// set current browsing directory
bool SetPwd(const std::filesystem::path &pwd =
std::filesystem::current_path());
// get current browsing directory
const std::filesystem::path &GetPwd() const noexcept;
// returns selected filename. make sense only when HasSelected returns true
// when ImGuiFileBrowserFlags_MultipleSelection is enabled, only one of
// selected filename will be returned
std::filesystem::path GetSelected() const;
// returns all selected filenames.
// when ImGuiFileBrowserFlags_MultipleSelection is enabled, use this
// instead of GetSelected
std::vector<std::filesystem::path> GetMultiSelected() const;
// set selected filename to empty
void ClearSelected();
// (optional) set file type filters. eg. { ".h", ".cpp", ".hpp" }
// ".*" matches any file types
void SetTypeFilters(const std::vector<std::string> &typeFilters);
// set currently applied type filter
// default value is 0 (the first type filter)
void SetCurrentTypeFilterIndex(int index);
template <class Functor>
struct ScopeGuard
{
ScopeGuard(Functor&& t) : func(std::move(t)) { }
~ScopeGuard()
{
func();
}
private:
Functor func;
};
static std::string ToLower(const std::string &s);
void SetPwdUncatched(const std::filesystem::path &pwd);
bool IsExtensionMatched(const std::filesystem::path &extension) const;
#ifdef _WIN32
static std::uint32_t GetDrivesBitMask();
#endif
// for c++17 compatibility
#if defined(__cpp_lib_char8_t)
static std::string u8StrToStr(std::u8string s);
#endif
static std::string u8StrToStr(std::string s);
int width_;
int height_;
ImGuiFileBrowserFlags flags_;
std::string title_;
std::string openLabel_;
bool openFlag_;
bool closeFlag_;
bool isOpened_;
bool ok_;
std::string statusStr_;
std::vector<std::string> typeFilters_;
int typeFilterIndex_;
bool hasAllFilter_;
std::filesystem::path pwd_;
std::set<std::filesystem::path> selectedFilenames_;
struct FileRecord
{
bool isDir = false;
std::filesystem::path name;
std::string showName;
std::filesystem::path extension;
};
std::vector<FileRecord> fileRecords_;
// IMPROVE: truncate when selectedFilename_.length() > inputNameBuf_.size() - 1
static constexpr size_t INPUT_NAME_BUF_SIZE = 512;
std::unique_ptr<std::array<char, INPUT_NAME_BUF_SIZE>> inputNameBuf_;
std::string openNewDirLabel_;
std::unique_ptr<std::array<char, INPUT_NAME_BUF_SIZE>> newDirNameBuf_;
#ifdef _WIN32
uint32_t drives_;
#endif
};
} // namespace ImGui
inline ImGui::FileBrowser::FileBrowser(ImGuiFileBrowserFlags flags)
: width_(700), height_(450), flags_(flags),
openFlag_(false), closeFlag_(false), isOpened_(false), ok_(false),
inputNameBuf_(std::make_unique<std::array<char, INPUT_NAME_BUF_SIZE>>())
{
if(flags_ & ImGuiFileBrowserFlags_CreateNewDir)
newDirNameBuf_ = std::make_unique<
std::array<char, INPUT_NAME_BUF_SIZE>>();
inputNameBuf_->front() = '\0';
inputNameBuf_->back() = '\0';
SetTitle("File Browser");
try {
SetPwd(std::filesystem::current_path());
} catch (std::filesystem::filesystem_error&) {}
typeFilters_.clear();
typeFilterIndex_ = 0;
hasAllFilter_ = false;
#ifdef _WIN32
drives_ = GetDrivesBitMask();
#endif
}
inline ImGui::FileBrowser::FileBrowser(const FileBrowser &copyFrom)
: FileBrowser()
{
*this = copyFrom;
}
inline ImGui::FileBrowser &ImGui::FileBrowser::operator=(
const FileBrowser &copyFrom)
{
width_ = copyFrom.width_;
height_ = copyFrom.height_;
flags_ = copyFrom.flags_;
SetTitle(copyFrom.title_);
openFlag_ = copyFrom.openFlag_;
closeFlag_ = copyFrom.closeFlag_;
isOpened_ = copyFrom.isOpened_;
ok_ = copyFrom.ok_;
statusStr_ = "";
typeFilters_ = copyFrom.typeFilters_;
typeFilterIndex_ = copyFrom.typeFilterIndex_;
hasAllFilter_ = copyFrom.hasAllFilter_;
pwd_ = copyFrom.pwd_;
selectedFilenames_ = copyFrom.selectedFilenames_;
fileRecords_ = copyFrom.fileRecords_;
*inputNameBuf_ = *copyFrom.inputNameBuf_;
if(flags_ & ImGuiFileBrowserFlags_CreateNewDir)
{
newDirNameBuf_ = std::make_unique<
std::array<char, INPUT_NAME_BUF_SIZE>>();
*newDirNameBuf_ = *copyFrom.newDirNameBuf_;
}
return *this;
}
inline void ImGui::FileBrowser::SetWindowSize(int width, int height) noexcept
{
assert(width > 0 && height > 0);
width_ = width;
height_ = height;
}
inline void ImGui::FileBrowser::SetTitle(std::string title)
{
title_ = std::move(title);
openLabel_ = title_ + "##filebrowser_" +
std::to_string(reinterpret_cast<size_t>(this));
openNewDirLabel_ = "new dir##new_dir_" +
std::to_string(reinterpret_cast<size_t>(this));
}
inline void ImGui::FileBrowser::Open()
{
ClearSelected();
statusStr_ = std::string();
openFlag_ = true;
closeFlag_ = false;
}
inline void ImGui::FileBrowser::Close()
{
ClearSelected();
statusStr_ = std::string();
closeFlag_ = true;
openFlag_ = false;
}
inline bool ImGui::FileBrowser::IsOpened() const noexcept
{
return isOpened_;
}
inline void ImGui::FileBrowser::Display()
{
PushID(this);
ScopeGuard exitThis([this]
{
openFlag_ = false;
closeFlag_ = false;
PopID();
});
if(openFlag_)
OpenPopup(openLabel_.c_str());
isOpened_ = false;
// open the popup window
if(openFlag_ && (flags_ & ImGuiFileBrowserFlags_NoModal))
{
SetNextWindowSize(
ImVec2(static_cast<float>(width_), static_cast<float>(height_)));
}
else
{
SetNextWindowSize(
ImVec2(static_cast<float>(width_), static_cast<float>(height_)),
ImGuiCond_FirstUseEver);
}
if(flags_ & ImGuiFileBrowserFlags_NoModal)
{
if(!BeginPopup(openLabel_.c_str()))
return;
}
else if(!BeginPopupModal(openLabel_.c_str(), nullptr,
flags_ & ImGuiFileBrowserFlags_NoTitleBar ?
ImGuiWindowFlags_NoTitleBar : 0))
{
return;
}
isOpened_ = true;
ScopeGuard endPopup([] { EndPopup(); });
// display elements in pwd
#ifdef _WIN32
char currentDrive = static_cast<char>(pwd_.c_str()[0]);
char driveStr[] = { currentDrive, ':', '\0' };
PushItemWidth(4 * GetFontSize());
if(BeginCombo("##select_drive", driveStr))
{
ScopeGuard guard([&] { EndCombo(); });
for(int i = 0; i < 26; ++i)
{
if(!(drives_ & (1 << i)))
continue;
char driveCh = static_cast<char>('A' + i);
char selectableStr[] = { driveCh, ':', '\0' };
bool selected = currentDrive == driveCh;
if(Selectable(selectableStr, selected) && !selected)
{
char newPwd[] = { driveCh, ':', '\\', '\0' };
SetPwd(newPwd);
}
}
}
PopItemWidth();
SameLine();
#endif
int secIdx = 0, newPwdLastSecIdx = -1;
for(auto &sec : pwd_)
{
#ifdef _WIN32
if(secIdx == 1)
{
++secIdx;
continue;
}
#endif
PushID(secIdx);
if(secIdx > 0)
SameLine();
if(SmallButton(u8StrToStr(sec.u8string()).c_str()))
newPwdLastSecIdx = secIdx;
PopID();
++secIdx;
}
if(newPwdLastSecIdx >= 0)
{
int i = 0;
std::filesystem::path newPwd;
for(auto &sec : pwd_)
{
if(i++ > newPwdLastSecIdx)
break;
newPwd /= sec;
}
#ifdef _WIN32
if(newPwdLastSecIdx == 0)
newPwd /= "\\";
#endif
SetPwd(newPwd);
}
SameLine();
if(SmallButton("*"))
SetPwd(pwd_);
if(newDirNameBuf_)
{
SameLine();
if(SmallButton("+"))
{
OpenPopup(openNewDirLabel_.c_str());
(*newDirNameBuf_)[0] = '\0';
}
if(BeginPopup(openNewDirLabel_.c_str()))
{
ScopeGuard endNewDirPopup([] { EndPopup(); });
InputText("name", newDirNameBuf_->data(), newDirNameBuf_->size());
SameLine();
if(Button("ok") && (*newDirNameBuf_)[0] != '\0')
{
ScopeGuard closeNewDirPopup([] { CloseCurrentPopup(); });
if(create_directory(pwd_ / newDirNameBuf_->data()))
SetPwd(pwd_);
else
{
statusStr_ = "failed to create " +
std::string(newDirNameBuf_->data());
}
}
}
}
// browse files in a child window
float reserveHeight = GetFrameHeightWithSpacing();
std::filesystem::path newPwd; bool setNewPwd = false;
if(!(flags_ & ImGuiFileBrowserFlags_SelectDirectory) &&
(flags_ & ImGuiFileBrowserFlags_EnterNewFilename))
reserveHeight += GetFrameHeightWithSpacing();
{
BeginChild("ch", ImVec2(0, -reserveHeight), true,
(flags_ & ImGuiFileBrowserFlags_NoModal) ?
ImGuiWindowFlags_AlwaysHorizontalScrollbar : 0);
ScopeGuard endChild([] { EndChild(); });
for(auto &rsc : fileRecords_)
{
if(!rsc.isDir && !IsExtensionMatched(rsc.extension))
continue;
if(!rsc.name.empty() && rsc.name.c_str()[0] == '$')
continue;
bool selected = selectedFilenames_.find(rsc.name)
!= selectedFilenames_.end();
if(Selectable(rsc.showName.c_str(), selected,
ImGuiSelectableFlags_DontClosePopups))
{
const bool multiSelect =
(flags_ & ImGuiFileBrowserFlags_MultipleSelection) &&
IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows) &&
(GetIO().KeyCtrl || GetIO().KeyShift);
if(selected)
{
if(!multiSelect)
selectedFilenames_.clear();
else
selectedFilenames_.erase(rsc.name);
(*inputNameBuf_)[0] = '\0';
}
else if(rsc.name != "..")
{
if((rsc.isDir && (flags_ & ImGuiFileBrowserFlags_SelectDirectory)) ||
(!rsc.isDir && !(flags_ & ImGuiFileBrowserFlags_SelectDirectory)))
{
if(!multiSelect)
selectedFilenames_.clear();
selectedFilenames_.insert(rsc.name);
if(!(flags_ & ImGuiFileBrowserFlags_SelectDirectory))
{
#ifdef _MSC_VER
strcpy_s(
inputNameBuf_->data(), inputNameBuf_->size(),
u8StrToStr(rsc.name.u8string()).c_str());
#else
std::strncpy(inputNameBuf_->data(),
u8StrToStr(rsc.name.u8string()).c_str(),
inputNameBuf_->size() - 1);
#endif
}
}
}
else
{
if(!multiSelect)
selectedFilenames_.clear();
}
}
if(IsItemClicked(0) && IsMouseDoubleClicked(0))
{
if(rsc.isDir)
{
setNewPwd = true;
newPwd = (rsc.name != "..") ? (pwd_ / rsc.name) :
pwd_.parent_path();
}
else if(!(flags_ & ImGuiFileBrowserFlags_SelectDirectory))
{
selectedFilenames_ = { rsc.name };
ok_ = true;
CloseCurrentPopup();
}
}
}
}
if(setNewPwd)
SetPwd(newPwd);
if(!(flags_ & ImGuiFileBrowserFlags_SelectDirectory) &&
(flags_ & ImGuiFileBrowserFlags_EnterNewFilename))
{
PushID(this);
ScopeGuard popTextID([] { PopID(); });
PushItemWidth(-1);
if(InputText("", inputNameBuf_->data(), inputNameBuf_->size()) &&
inputNameBuf_->at(0) != '\0')
{
selectedFilenames_ = { inputNameBuf_->data() };
}
PopItemWidth();
}
if(!(flags_ & ImGuiFileBrowserFlags_SelectDirectory))
{
if(Button(" ok ") && !selectedFilenames_.empty())
{
ok_ = true;
CloseCurrentPopup();
}
}
else
{
if(Button(" ok "))
{
ok_ = true;
CloseCurrentPopup();
}
}
SameLine();
int escIdx = GetIO().KeyMap[ImGuiKey_Escape];
if(Button("cancel") || closeFlag_ ||
((flags_ & ImGuiFileBrowserFlags_CloseOnEsc) &&
IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows) &&
escIdx >= 0 && IsKeyPressed(escIdx)))
CloseCurrentPopup();
if(!statusStr_.empty() && !(flags_ & ImGuiFileBrowserFlags_NoStatusBar))
{
SameLine();
Text("%s", statusStr_.c_str());
}
if(!typeFilters_.empty())
{
SameLine();
PushItemWidth(8 * GetFontSize());
if(BeginCombo(
"##type_filters", typeFilters_[typeFilterIndex_].c_str()))
{
ScopeGuard guard([&] { EndCombo(); });
for(size_t i = 0; i < typeFilters_.size(); ++i)
{
bool selected = static_cast<int>(i) == typeFilterIndex_;
if(Selectable(typeFilters_[i].c_str(), selected) && !selected)
typeFilterIndex_ = static_cast<int>(i);
}
}
PopItemWidth();
}
}
inline bool ImGui::FileBrowser::HasSelected() const noexcept
{
return ok_;
}
inline bool ImGui::FileBrowser::SetPwd(const std::filesystem::path &pwd)
{
try
{
SetPwdUncatched(pwd);
return true;
}
catch(const std::exception &err)
{
statusStr_ = std::string("last error: ") + err.what();
}
catch(...)
{
statusStr_ = "last error: unknown";
}
SetPwdUncatched(std::filesystem::current_path());
return false;
}
inline const class std::filesystem::path &ImGui::FileBrowser::GetPwd() const noexcept
{
return pwd_;
}
inline std::filesystem::path ImGui::FileBrowser::GetSelected() const
{
// when ok_ is true, selectedFilenames_ may be empty if SelectDirectory
// is enabled. return pwd in that case.
if(selectedFilenames_.empty())
return pwd_;
return pwd_ / *selectedFilenames_.begin();
}
inline std::vector<std::filesystem::path>
ImGui::FileBrowser::GetMultiSelected() const
{
if(selectedFilenames_.empty())
return { pwd_ };
std::vector<std::filesystem::path> ret;
ret.reserve(selectedFilenames_.size());
for(auto &s : selectedFilenames_)
ret.push_back(pwd_ / s);
return ret;
}
inline void ImGui::FileBrowser::ClearSelected()
{
selectedFilenames_.clear();
(*inputNameBuf_)[0] = '\0';
ok_ = false;
}
inline void ImGui::FileBrowser::SetTypeFilters(
const std::vector<std::string> &_typeFilters)
{
typeFilters_.clear();
// remove duplicate filter names due to case unsensitivity on windows
#ifdef _WIN32
std::vector<std::string> typeFilters;
for(auto &rawFilter : _typeFilters)
{
std::string lowerFilter = ToLower(rawFilter);
if(std::find(typeFilters.begin(), typeFilters.end(), lowerFilter) ==
typeFilters.end())
typeFilters.push_back(std::move(lowerFilter));
}
#else
auto &typeFilters = _typeFilters;
#endif
// insert auto-generated filter
if(typeFilters.size() > 1)
{
hasAllFilter_ = true;
std::string allFiltersName = std::string();
for(size_t i = 0; i < typeFilters.size(); ++i)
{
if(typeFilters[i] == std::string_view(".*"))
{
hasAllFilter_ = false;
break;
}
if(i > 0)
allFiltersName += ",";
allFiltersName += typeFilters[i];
}
if(hasAllFilter_)
typeFilters_.push_back(std::move(allFiltersName));
}
std::copy(
typeFilters.begin(), typeFilters.end(),
std::back_inserter(typeFilters_));
typeFilterIndex_ = 0;
}
inline void ImGui::FileBrowser::SetCurrentTypeFilterIndex(int index)
{
typeFilterIndex_ = index;
}
inline std::string ImGui::FileBrowser::ToLower(const std::string &s)
{
std::string ret = s;
for(char &c : ret)
c = static_cast<char>(std::tolower(c));
return ret;
}
inline void ImGui::FileBrowser::SetPwdUncatched(const std::filesystem::path &pwd)
{
fileRecords_ = { FileRecord{ true, "..", "[D] ..", "" } };
for(auto &p : std::filesystem::directory_iterator(pwd))
{
FileRecord rcd;
if(p.is_regular_file())
rcd.isDir = false;
else if(p.is_directory())
rcd.isDir = true;
else
continue;
rcd.name = p.path().filename();
if(rcd.name.empty())
continue;
rcd.extension = p.path().filename().extension();
rcd.showName = (rcd.isDir ? "[D] " : "[F] ") +
u8StrToStr(p.path().filename().u8string());
fileRecords_.push_back(rcd);
}
std::sort(fileRecords_.begin(), fileRecords_.end(),
[](const FileRecord &L, const FileRecord &R)
{
return (L.isDir ^ R.isDir) ? L.isDir : (L.name < R.name);
});
pwd_ = absolute(pwd);
selectedFilenames_.clear();
(*inputNameBuf_)[0] = '\0';
}
inline bool ImGui::FileBrowser::IsExtensionMatched(
const std::filesystem::path &_extension) const
{
#ifdef _WIN32
std::filesystem::path extension = ToLower(_extension.string());
#else
auto &extension = _extension;
#endif
// no type filters
if(typeFilters_.empty())
return true;
// invalid type filter index
if(static_cast<size_t>(typeFilterIndex_) >= typeFilters_.size())
return true;
// all type filters
if(hasAllFilter_ && typeFilterIndex_ == 0)
{
for(size_t i = 1; i < typeFilters_.size(); ++i)
{
if(extension == typeFilters_[i])
return true;
}
return false;
}
// universal filter
if(typeFilters_[typeFilterIndex_] == std::string_view(".*"))
return true;
// regular filter
return extension == typeFilters_[typeFilterIndex_];
}
#if defined(__cpp_lib_char8_t)
inline std::string ImGui::FileBrowser::u8StrToStr(std::u8string s)
{
return std::string(s.begin(), s.end());
}
#endif
inline std::string ImGui::FileBrowser::u8StrToStr(std::string s)
{
return s;
}
#ifdef _WIN32
#ifndef _INC_WINDOWS
#ifndef WIN32_LEAN_AND_MEAN
#define IMGUI_FILEBROWSER_UNDEF_WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif // #ifndef WIN32_LEAN_AND_MEAN
#include <windows.h>
#ifdef IMGUI_FILEBROWSER_UNDEF_WIN32_LEAN_AND_MEAN
#undef IMGUI_FILEBROWSER_UNDEF_WIN32_LEAN_AND_MEAN
#undef WIN32_LEAN_AND_MEAN
#endif // #ifdef IMGUI_FILEBROWSER_UNDEF_WIN32_LEAN_AND_MEAN
#endif // #ifdef _INC_WINDOWS
inline std::uint32_t ImGui::FileBrowser::GetDrivesBitMask()
{
DWORD mask = GetLogicalDrives();
uint32_t ret = 0;
for(int i = 0; i < 26; ++i)
{
if(!(mask & (1 << i)))
continue;
char rootName[4] = { static_cast<char>('A' + i), ':', '\\', '\0' };
UINT type = GetDriveTypeA(rootName);
if(type == DRIVE_REMOVABLE || type == DRIVE_FIXED)
ret |= (1 << i);
}
return ret;
}
#endif
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// Mini memory editor for Dear ImGui (to embed in your game/tools)
// Animated GIF: https://twitter.com/ocornut/status/894242704317530112
// Get latest version at http://www.github.com/ocornut/imgui_club
//
// Right-click anywhere to access the Options menu!
// You can adjust the keyboard repeat delay/rate in ImGuiIO.
// The code assume a mono-space font for simplicity! If you don't use the default font, use ImGui::PushFont()/PopFont() to switch to a mono-space font before caling this.
//
// Usage:
// static MemoryEditor mem_edit_1; // store your state somewhere
// mem_edit_1.DrawWindow("Memory Editor", mem_block, mem_block_size, 0x0000); // create a window and draw memory editor (if you already have a window, use DrawContents())
//
// Usage:
// static MemoryEditor mem_edit_2;
// ImGui::Begin("MyWindow")
// mem_edit_2.DrawContents(this, sizeof(*this), (size_t)this);
// ImGui::End();
//
// Changelog:
// - v0.10: initial version
// - v0.11: always refresh active text input with the latest byte from source memory if it's not being edited.
// - v0.12: added OptMidRowsCount to allow extra spacing every XX rows.
// - v0.13: added optional ReadFn/WriteFn handlers to access memory via a function. various warning fixes for 64-bits.
// - v0.14: added GotoAddr member, added GotoAddrAndHighlight() and highlighting. fixed minor scrollbar glitch when resizing.
// - v0.15: added maximum window width. minor optimization.
// - v0.16: added OptGreyOutZeroes option. various sizing fixes when resizing using the "Rows" drag.
// - v0.17: added HighlightFn handler for optional non-contiguous highlighting.
// - v0.18: fixes for displaying 64-bits addresses, fixed mouse click gaps introduced in recent changes, cursor tracking scrolling fixes.
// - v0.19: fixed auto-focus of next byte leaving WantCaptureKeyboard=false for one frame. we now capture the keyboard during that transition.
// - v0.20: added options menu. added OptShowAscii checkbox. added optional HexII display. split Draw() in DrawWindow()/DrawContents(). fixing glyph width. refactoring/cleaning code.
// - v0.21: fixes for using DrawContents() in our own window. fixed HexII to actually be useful and not on the wrong side.
// - v0.22: clicking Ascii view select the byte in the Hex view. Ascii view highlight selection.
// - v0.23: fixed right-arrow triggering a byte write.
// - v0.24: changed DragInt("Rows" to use a %d data format (which is desirable since imgui 1.61).
// - v0.25: fixed wording: all occurrences of "Rows" renamed to "Columns".
// - v0.26: fixed clicking on hex region
// - v0.30: added data preview for common data types
// - v0.31: added OptUpperCaseHex option to select lower/upper casing display [@samhocevar]
// - v0.32: changed signatures to use void* instead of unsigned char*
// - v0.33: added OptShowOptions option to hide all the interactive option setting.
// - v0.34: binary preview now applies endianess setting [@nicolasnoble]
//
// Todo/Bugs:
// - Arrows are being sent to the InputText() about to disappear which for LeftArrow makes the text cursor appear at position 1 for one frame.
// - Using InputText() is awkward and maybe overkill here, consider implementing something custom.
#pragma once
#include <stdio.h> // sprintf, scanf
#include <stdint.h> // uint8_t, etc.
#ifdef _MSC_VER
#define _PRISizeT "I"
#define ImSnprintf _snprintf
#else
#define _PRISizeT "z"
#define ImSnprintf snprintf
#endif
struct MemoryEditor
{
typedef unsigned char u8;
enum DataType
{
DataType_S8,
DataType_U8,
DataType_S16,
DataType_U16,
DataType_S32,
DataType_U32,
DataType_S64,
DataType_U64,
DataType_Float,
DataType_Double,
DataType_COUNT
};
enum DataFormat
{
DataFormat_Bin = 0,
DataFormat_Dec = 1,
DataFormat_Hex = 2,
DataFormat_COUNT
};
// Settings
bool Open; // = true // set to false when DrawWindow() was closed. ignore if not using DrawWindow().
bool ReadOnly; // = false // disable any editing.
int Cols; // = 16 // number of columns to display.
bool OptShowOptions; // = true // display options button/context menu. when disabled, options will be locked unless you provide your own UI for them.
bool OptShowDataPreview; // = false // display a footer previewing the decimal/binary/hex/float representation of the currently selected bytes.
bool OptShowHexII; // = false // display values in HexII representation instead of regular hexadecimal: hide null/zero bytes, ascii values as ".X".
bool OptShowAscii; // = true // display ASCII representation on the right side.
bool OptGreyOutZeroes; // = true // display null/zero bytes using the TextDisabled color.
bool OptUpperCaseHex; // = true // display hexadecimal values as "FF" instead of "ff".
int OptMidColsCount; // = 8 // set to 0 to disable extra spacing between every mid-cols.
int OptAddrDigitsCount; // = 0 // number of addr digits to display (default calculated based on maximum displayed addr).
ImU32 HighlightColor; // // background color of highlighted bytes.
u8 (*ReadFn)(const u8* data, size_t off); // = NULL // optional handler to read bytes.
void (*WriteFn)(u8* data, size_t off, u8 d); // = NULL // optional handler to write bytes.
bool (*HighlightFn)(const u8* data, size_t off);//NULL // optional handler to return Highlight property (to support non-contiguous highlighting).
// [Internal State]
bool ContentsWidthChanged;
size_t DataPreviewAddr;
size_t DataEditingAddr;
bool DataEditingTakeFocus;
char DataInputBuf[32];
char AddrInputBuf[32];
size_t GotoAddr;
size_t HighlightMin, HighlightMax;
int PreviewEndianess;
DataType PreviewDataType;
MemoryEditor()
{
// Settings
Open = true;
ReadOnly = false;
Cols = 16;
OptShowOptions = true;
OptShowDataPreview = false;
OptShowHexII = false;
OptShowAscii = true;
OptGreyOutZeroes = true;
OptUpperCaseHex = true;
OptMidColsCount = 8;
OptAddrDigitsCount = 0;
HighlightColor = IM_COL32(255, 255, 255, 50);
ReadFn = NULL;
WriteFn = NULL;
HighlightFn = NULL;
// State/Internals
ContentsWidthChanged = false;
DataPreviewAddr = DataEditingAddr = (size_t)-1;
DataEditingTakeFocus = false;
memset(DataInputBuf, 0, sizeof(DataInputBuf));
memset(AddrInputBuf, 0, sizeof(AddrInputBuf));
GotoAddr = (size_t)-1;
HighlightMin = HighlightMax = (size_t)-1;
PreviewEndianess = 0;
PreviewDataType = DataType_S32;
}
void GotoAddrAndHighlight(size_t addr_min, size_t addr_max)
{
GotoAddr = addr_min;
HighlightMin = addr_min;
HighlightMax = addr_max;
}
struct Sizes
{
int AddrDigitsCount;
float LineHeight;
float GlyphWidth;
float HexCellWidth;
float SpacingBetweenMidCols;
float PosHexStart;
float PosHexEnd;
float PosAsciiStart;
float PosAsciiEnd;
float WindowWidth;
};
void CalcSizes(Sizes& s, size_t mem_size, size_t base_display_addr)
{
ImGuiStyle& style = ImGui::GetStyle();
s.AddrDigitsCount = OptAddrDigitsCount;
if (s.AddrDigitsCount == 0)
for (size_t n = base_display_addr + mem_size - 1; n > 0; n >>= 4)
s.AddrDigitsCount++;
s.LineHeight = ImGui::GetTextLineHeight();
s.GlyphWidth = ImGui::CalcTextSize("F").x + 1; // We assume the font is mono-space
s.HexCellWidth = (float)(int)(s.GlyphWidth * 2.5f); // "FF " we include trailing space in the width to easily catch clicks everywhere
s.SpacingBetweenMidCols = (float)(int)(s.HexCellWidth * 0.25f); // Every OptMidColsCount columns we add a bit of extra spacing
s.PosHexStart = (s.AddrDigitsCount + 2) * s.GlyphWidth;
s.PosHexEnd = s.PosHexStart + (s.HexCellWidth * Cols);
s.PosAsciiStart = s.PosAsciiEnd = s.PosHexEnd;
if (OptShowAscii)
{
s.PosAsciiStart = s.PosHexEnd + s.GlyphWidth * 1;
if (OptMidColsCount > 0)
s.PosAsciiStart += (float)((Cols + OptMidColsCount - 1) / OptMidColsCount) * s.SpacingBetweenMidCols;
s.PosAsciiEnd = s.PosAsciiStart + Cols * s.GlyphWidth;
}
s.WindowWidth = s.PosAsciiEnd + style.ScrollbarSize + style.WindowPadding.x * 2 + s.GlyphWidth;
}
// Standalone Memory Editor window
void DrawWindow(const char* title, void* mem_data, size_t mem_size, size_t base_display_addr = 0x0000)
{
Sizes s;
CalcSizes(s, mem_size, base_display_addr);
ImGui::SetNextWindowSizeConstraints(ImVec2(0.0f, 0.0f), ImVec2(s.WindowWidth, FLT_MAX));
Open = true;
if (ImGui::Begin(title, &Open, ImGuiWindowFlags_NoScrollbar))
{
if (ImGui::IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows) && ImGui::IsMouseClicked(1))
ImGui::OpenPopup("context");
DrawContents(mem_data, mem_size, base_display_addr);
if (ContentsWidthChanged)
{
CalcSizes(s, mem_size, base_display_addr);
ImGui::SetWindowSize(ImVec2(s.WindowWidth, ImGui::GetWindowSize().y));
}
}
ImGui::End();
}
// Memory Editor contents only
void DrawContents(void* mem_data_void_ptr, size_t mem_size, size_t base_display_addr = 0x0000)
{
u8* mem_data = (u8*)mem_data_void_ptr;
Sizes s;
CalcSizes(s, mem_size, base_display_addr);
ImGuiStyle& style = ImGui::GetStyle();
// We begin into our scrolling region with the 'ImGuiWindowFlags_NoMove' in order to prevent click from moving the window.
// This is used as a facility since our main click detection code doesn't assign an ActiveId so the click would normally be caught as a window-move.
const float height_separator = style.ItemSpacing.y;
float footer_height = 0;
if (OptShowOptions)
footer_height += height_separator + ImGui::GetFrameHeightWithSpacing() * 1;
if (OptShowDataPreview)
footer_height += height_separator + ImGui::GetFrameHeightWithSpacing() * 1 + ImGui::GetTextLineHeightWithSpacing() * 3;
ImGui::BeginChild("##scrolling", ImVec2(0, -footer_height), false, ImGuiWindowFlags_NoMove);
ImDrawList* draw_list = ImGui::GetWindowDrawList();
ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0, 0));
ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(0, 0));
const int line_total_count = (int)((mem_size + Cols - 1) / Cols);
ImGuiListClipper clipper(line_total_count, s.LineHeight);
const size_t visible_start_addr = clipper.DisplayStart * Cols;
const size_t visible_end_addr = clipper.DisplayEnd * Cols;
bool data_next = false;
if (ReadOnly || DataEditingAddr >= mem_size)
DataEditingAddr = (size_t)-1;
if (DataPreviewAddr >= mem_size)
DataPreviewAddr = (size_t)-1;
size_t preview_data_type_size = OptShowDataPreview ? DataTypeGetSize(PreviewDataType) : 0;
size_t data_editing_addr_backup = DataEditingAddr;
size_t data_editing_addr_next = (size_t)-1;
if (DataEditingAddr != (size_t)-1)
{
// Move cursor but only apply on next frame so scrolling with be synchronized (because currently we can't change the scrolling while the window is being rendered)
if (ImGui::IsKeyPressed(ImGui::GetKeyIndex(ImGuiKey_UpArrow)) && DataEditingAddr >= (size_t)Cols) { data_editing_addr_next = DataEditingAddr - Cols; DataEditingTakeFocus = true; }
else if (ImGui::IsKeyPressed(ImGui::GetKeyIndex(ImGuiKey_DownArrow)) && DataEditingAddr < mem_size - Cols) { data_editing_addr_next = DataEditingAddr + Cols; DataEditingTakeFocus = true; }
else if (ImGui::IsKeyPressed(ImGui::GetKeyIndex(ImGuiKey_LeftArrow)) && DataEditingAddr > 0) { data_editing_addr_next = DataEditingAddr - 1; DataEditingTakeFocus = true; }
else if (ImGui::IsKeyPressed(ImGui::GetKeyIndex(ImGuiKey_RightArrow)) && DataEditingAddr < mem_size - 1) { data_editing_addr_next = DataEditingAddr + 1; DataEditingTakeFocus = true; }
}
if (data_editing_addr_next != (size_t)-1 && (data_editing_addr_next / Cols) != (data_editing_addr_backup / Cols))
{
// Track cursor movements
const int scroll_offset = ((int)(data_editing_addr_next / Cols) - (int)(data_editing_addr_backup / Cols));
const bool scroll_desired = (scroll_offset < 0 && data_editing_addr_next < visible_start_addr + Cols * 2) || (scroll_offset > 0 && data_editing_addr_next > visible_end_addr - Cols * 2);
if (scroll_desired)
ImGui::SetScrollY(ImGui::GetScrollY() + scroll_offset * s.LineHeight);
}
// Draw vertical separator
ImVec2 window_pos = ImGui::GetWindowPos();
if (OptShowAscii)
draw_list->AddLine(ImVec2(window_pos.x + s.PosAsciiStart - s.GlyphWidth, window_pos.y), ImVec2(window_pos.x + s.PosAsciiStart - s.GlyphWidth, window_pos.y + 9999), ImGui::GetColorU32(ImGuiCol_Border));
const ImU32 color_text = ImGui::GetColorU32(ImGuiCol_Text);
const ImU32 color_disabled = OptGreyOutZeroes ? ImGui::GetColorU32(ImGuiCol_TextDisabled) : color_text;
const char* format_address = OptUpperCaseHex ? "%0*" _PRISizeT "X: " : "%0*" _PRISizeT "x: ";
const char* format_data = OptUpperCaseHex ? "%0*" _PRISizeT "X" : "%0*" _PRISizeT "x";
const char* format_range = OptUpperCaseHex ? "Range %0*" _PRISizeT "X..%0*" _PRISizeT "X" : "Range %0*" _PRISizeT "x..%0*" _PRISizeT "x";
const char* format_byte = OptUpperCaseHex ? "%02X" : "%02x";
const char* format_byte_space = OptUpperCaseHex ? "%02X " : "%02x ";
for (int line_i = clipper.DisplayStart; line_i < clipper.DisplayEnd; line_i++) // display only visible lines
{
size_t addr = (size_t)(line_i * Cols);
// format fix
char addr_str_buf[512] {};
snprintf(addr_str_buf, sizeof(addr_str_buf), format_address, s.AddrDigitsCount, base_display_addr + addr);
ImGui::TextUnformatted(addr_str_buf);
// Draw Hexadecimal
for (int n = 0; n < Cols && addr < mem_size; n++, addr++)
{
float byte_pos_x = s.PosHexStart + s.HexCellWidth * n;
if (OptMidColsCount > 0)
byte_pos_x += (float)(n / OptMidColsCount) * s.SpacingBetweenMidCols;
ImGui::SameLine(byte_pos_x);
// Draw highlight
bool is_highlight_from_user_range = (addr >= HighlightMin && addr < HighlightMax);
bool is_highlight_from_user_func = (HighlightFn && HighlightFn(mem_data, addr));
bool is_highlight_from_preview = (addr >= DataPreviewAddr && addr < DataPreviewAddr + preview_data_type_size);
if (is_highlight_from_user_range || is_highlight_from_user_func || is_highlight_from_preview)
{
ImVec2 pos = ImGui::GetCursorScreenPos();
float highlight_width = s.GlyphWidth * 2;
bool is_next_byte_highlighted = (addr + 1 < mem_size) && ((HighlightMax != (size_t)-1 && addr + 1 < HighlightMax) || (HighlightFn && HighlightFn(mem_data, addr + 1)));
if (is_next_byte_highlighted || (n + 1 == Cols))
{
highlight_width = s.HexCellWidth;
if (OptMidColsCount > 0 && n > 0 && (n + 1) < Cols && ((n + 1) % OptMidColsCount) == 0)
highlight_width += s.SpacingBetweenMidCols;
}
draw_list->AddRectFilled(pos, ImVec2(pos.x + highlight_width, pos.y + s.LineHeight), HighlightColor);
}
if (DataEditingAddr == addr)
{
// Display text input on current byte
bool data_write = false;
ImGui::PushID((void*)addr);
if (DataEditingTakeFocus)
{
ImGui::SetKeyboardFocusHere();
ImGui::CaptureKeyboardFromApp(true);
sprintf(AddrInputBuf, format_data, s.AddrDigitsCount, base_display_addr + addr);
sprintf(DataInputBuf, format_byte, ReadFn ? ReadFn(mem_data, addr) : mem_data[addr]);
}
ImGui::PushItemWidth(s.GlyphWidth * 2);
struct UserData
{
// FIXME: We should have a way to retrieve the text edit cursor position more easily in the API, this is rather tedious. This is such a ugly mess we may be better off not using InputText() at all here.
static int Callback(ImGuiInputTextCallbackData* data)
{
UserData* user_data = (UserData*)data->UserData;
if (!data->HasSelection())
user_data->CursorPos = data->CursorPos;
if (data->SelectionStart == 0 && data->SelectionEnd == data->BufTextLen)
{
// When not editing a byte, always rewrite its content (this is a bit tricky, since InputText technically "owns" the master copy of the buffer we edit it in there)
data->DeleteChars(0, data->BufTextLen);
data->InsertChars(0, user_data->CurrentBufOverwrite);
data->SelectionStart = 0;
data->SelectionEnd = data->CursorPos = 2;
}
return 0;
}
char CurrentBufOverwrite[3]; // Input
int CursorPos; // Output
};
UserData user_data;
user_data.CursorPos = -1;
sprintf(user_data.CurrentBufOverwrite, format_byte, ReadFn ? ReadFn(mem_data, addr) : mem_data[addr]);
ImGuiInputTextFlags flags = ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_EnterReturnsTrue | ImGuiInputTextFlags_AutoSelectAll | ImGuiInputTextFlags_NoHorizontalScroll | ImGuiInputTextFlags_AlwaysInsertMode | ImGuiInputTextFlags_CallbackAlways;
if (ImGui::InputText("##data", DataInputBuf, 32, flags, UserData::Callback, &user_data))
data_write = data_next = true;
else if (!DataEditingTakeFocus && !ImGui::IsItemActive())
DataEditingAddr = data_editing_addr_next = (size_t)-1;
DataEditingTakeFocus = false;
ImGui::PopItemWidth();
if (user_data.CursorPos >= 2)
data_write = data_next = true;
if (data_editing_addr_next != (size_t)-1)
data_write = data_next = false;
unsigned int data_input_value = 0;
if (data_write && sscanf(DataInputBuf, "%X", &data_input_value) == 1)
{
if (WriteFn)
WriteFn(mem_data, addr, (u8)data_input_value);
else
mem_data[addr] = (u8)data_input_value;
}
ImGui::PopID();
}
else
{
// NB: The trailing space is not visible but ensure there's no gap that the mouse cannot click on.
u8 b = ReadFn ? ReadFn(mem_data, addr) : mem_data[addr];
if (OptShowHexII)
{
if ((b >= 32 && b < 128))
ImGui::Text(".%c ", b);
else if (b == 0xFF && OptGreyOutZeroes)
ImGui::TextDisabled("## ");
else if (b == 0x00)
ImGui::Text(" ");
else
ImGui::Text(format_byte_space, b);
}
else
{
if (b == 0 && OptGreyOutZeroes)
ImGui::TextDisabled("00 ");
else
ImGui::Text(format_byte_space, b);
}
if (!ReadOnly && ImGui::IsItemHovered() && ImGui::IsMouseClicked(0))
{
DataEditingTakeFocus = true;
data_editing_addr_next = addr;
}
}
}
if (OptShowAscii)
{
// Draw ASCII values
ImGui::SameLine(s.PosAsciiStart);
ImVec2 pos = ImGui::GetCursorScreenPos();
addr = line_i * Cols;
ImGui::PushID(line_i);
if (ImGui::InvisibleButton("ascii", ImVec2(s.PosAsciiEnd - s.PosAsciiStart, s.LineHeight)))
{
DataEditingAddr = DataPreviewAddr = addr + (size_t)((ImGui::GetIO().MousePos.x - pos.x) / s.GlyphWidth);
DataEditingTakeFocus = true;
}
ImGui::PopID();
for (int n = 0; n < Cols && addr < mem_size; n++, addr++)
{
if (addr == DataEditingAddr)
{
draw_list->AddRectFilled(pos, ImVec2(pos.x + s.GlyphWidth, pos.y + s.LineHeight), ImGui::GetColorU32(ImGuiCol_FrameBg));
draw_list->AddRectFilled(pos, ImVec2(pos.x + s.GlyphWidth, pos.y + s.LineHeight), ImGui::GetColorU32(ImGuiCol_TextSelectedBg));
}
unsigned char c = ReadFn ? ReadFn(mem_data, addr) : mem_data[addr];
char display_c = (c < 32 || c >= 128) ? '.' : c;
draw_list->AddText(pos, (display_c == '.') ? color_disabled : color_text, &display_c, &display_c + 1);
pos.x += s.GlyphWidth;
}
}
}
clipper.End();
ImGui::PopStyleVar(2);
ImGui::EndChild();
if (data_next && DataEditingAddr < mem_size)
{
DataEditingAddr = DataPreviewAddr = DataEditingAddr + 1;
DataEditingTakeFocus = true;
}
else if (data_editing_addr_next != (size_t)-1)
{
DataEditingAddr = DataPreviewAddr = data_editing_addr_next;
}
bool next_show_data_preview = OptShowDataPreview;
if (OptShowOptions)
{
ImGui::Separator();
// Options menu
if (ImGui::Button("Options"))
ImGui::OpenPopup("context");
if (ImGui::BeginPopup("context"))
{
ImGui::PushItemWidth(56);
if (ImGui::DragInt("##cols", &Cols, 0.2f, 4, 32, "%d cols")) { ContentsWidthChanged = true; }
ImGui::PopItemWidth();
ImGui::Checkbox("Show Data Preview", &next_show_data_preview);
ImGui::Checkbox("Show HexII", &OptShowHexII);
if (ImGui::Checkbox("Show Ascii", &OptShowAscii)) { ContentsWidthChanged = true; }
ImGui::Checkbox("Grey out zeroes", &OptGreyOutZeroes);
ImGui::Checkbox("Uppercase Hex", &OptUpperCaseHex);
ImGui::EndPopup();
}
ImGui::SameLine();
char format_range_buf[512] {};
snprintf(format_range_buf, sizeof(format_range_buf), format_range,
s.AddrDigitsCount, base_display_addr, s.AddrDigitsCount, base_display_addr + mem_size - 1);
ImGui::TextUnformatted(format_range_buf);
ImGui::SameLine();
ImGui::PushItemWidth((s.AddrDigitsCount + 1) * s.GlyphWidth + style.FramePadding.x * 2.0f);
if (ImGui::InputText("##addr", AddrInputBuf, 32, ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_EnterReturnsTrue))
{
size_t goto_addr;
if (sscanf(AddrInputBuf, "%" _PRISizeT "X", &goto_addr) == 1)
{
GotoAddr = goto_addr - base_display_addr;
HighlightMin = HighlightMax = (size_t)-1;
}
}
ImGui::PopItemWidth();
if (GotoAddr != (size_t)-1)
{
if (GotoAddr < mem_size)
{
ImGui::BeginChild("##scrolling");
ImGui::SetScrollFromPosY(ImGui::GetCursorStartPos().y + (GotoAddr / Cols) * ImGui::GetTextLineHeight());
ImGui::EndChild();
DataEditingAddr = DataPreviewAddr = GotoAddr;
DataEditingTakeFocus = true;
}
GotoAddr = (size_t)-1;
}
}
if (OptShowDataPreview)
{
ImGui::Separator();
ImGui::AlignTextToFramePadding();
ImGui::Text("Preview as:");
ImGui::SameLine();
ImGui::PushItemWidth((s.GlyphWidth * 10.0f) + style.FramePadding.x * 2.0f + style.ItemInnerSpacing.x);
if (ImGui::BeginCombo("##combo_type", DataTypeGetDesc(PreviewDataType), ImGuiComboFlags_HeightLargest))
{
for (int n = 0; n < DataType_COUNT; n++)
if (ImGui::Selectable(DataTypeGetDesc((DataType)n), PreviewDataType == n))
PreviewDataType = (DataType)n;
ImGui::EndCombo();
}
ImGui::PopItemWidth();
ImGui::SameLine();
ImGui::PushItemWidth((s.GlyphWidth * 6.0f) + style.FramePadding.x * 2.0f + style.ItemInnerSpacing.x);
ImGui::Combo("##combo_endianess", &PreviewEndianess, "LE\0BE\0\0");
ImGui::PopItemWidth();
char buf[128];
float x = s.GlyphWidth * 6.0f;
bool has_value = DataPreviewAddr != (size_t)-1;
if (has_value)
DisplayPreviewData(DataPreviewAddr, mem_data, mem_size, PreviewDataType, DataFormat_Dec, buf, (size_t)IM_ARRAYSIZE(buf));
ImGui::Text("Dec"); ImGui::SameLine(x); ImGui::TextUnformatted(has_value ? buf : "N/A");
if (has_value)
DisplayPreviewData(DataPreviewAddr, mem_data, mem_size, PreviewDataType, DataFormat_Hex, buf, (size_t)IM_ARRAYSIZE(buf));
ImGui::Text("Hex"); ImGui::SameLine(x); ImGui::TextUnformatted(has_value ? buf : "N/A");
if (has_value)
DisplayPreviewData(DataPreviewAddr, mem_data, mem_size, PreviewDataType, DataFormat_Bin, buf, (size_t)IM_ARRAYSIZE(buf));
ImGui::Text("Bin"); ImGui::SameLine(x); ImGui::TextUnformatted(has_value ? buf : "N/A");
}
OptShowDataPreview = next_show_data_preview;
// Notify the main window of our ideal child content size (FIXME: we are missing an API to get the contents size from the child)
ImGui::SetCursorPosX(s.WindowWidth);
}
// Utilities for Data Preview
const char* DataTypeGetDesc(DataType data_type) const
{
const char* descs[] = { "Int8", "Uint8", "Int16", "Uint16", "Int32", "Uint32", "Int64", "Uint64", "Float", "Double" };
IM_ASSERT(data_type >= 0 && data_type < DataType_COUNT);
return descs[data_type];
}
size_t DataTypeGetSize(DataType data_type) const
{
const size_t sizes[] = { 1, 1, 2, 2, 4, 4, 8, 8, 4, 8 };
IM_ASSERT(data_type >= 0 && data_type < DataType_COUNT);
return sizes[data_type];
}
const char* DataFormatGetDesc(DataFormat data_format) const
{
const char* descs[] = { "Bin", "Dec", "Hex" };
IM_ASSERT(data_format >= 0 && data_format < DataFormat_COUNT);
return descs[data_format];
}
bool IsBigEndian() const
{
uint16_t x = 1;
char c[2];
memcpy(c, &x, 2);
return c[0] != 0;
}
static void* EndianessCopyBigEndian(void* _dst, void* _src, size_t s, int is_little_endian)
{
if (is_little_endian)
{
uint8_t* dst = (uint8_t*)_dst;
uint8_t* src = (uint8_t*)_src + s - 1;
for (int i = 0, n = (int)s; i < n; ++i)
memcpy(dst++, src--, 1);
return _dst;
}
else
{
return memcpy(_dst, _src, s);
}
}
static void* EndianessCopyLittleEndian(void* _dst, void* _src, size_t s, int is_little_endian)
{
if (is_little_endian)
{
return memcpy(_dst, _src, s);
}
else
{
uint8_t* dst = (uint8_t*)_dst;
uint8_t* src = (uint8_t*)_src + s - 1;
for (int i = 0, n = (int)s; i < n; ++i)
memcpy(dst++, src--, 1);
return _dst;
}
}
void* EndianessCopy(void *dst, void *src, size_t size) const
{
static void *(*fp)(void *, void *, size_t, int) = NULL;
if (fp == NULL)
fp = IsBigEndian() ? EndianessCopyBigEndian : EndianessCopyLittleEndian;
return fp(dst, src, size, PreviewEndianess);
}
const char* FormatBinary(const uint8_t* buf, int width) const
{
IM_ASSERT(width <= 64);
size_t out_n = 0;
static char out_buf[64 + 8 + 1];
int n = width / 8;
for (int j = n - 1; j >= 0; --j)
{
for (int i = 0; i < 8; ++i)
out_buf[out_n++] = (buf[j] & (1 << (7 - i))) ? '1' : '0';
out_buf[out_n++] = ' ';
}
IM_ASSERT(out_n < IM_ARRAYSIZE(out_buf));
out_buf[out_n] = 0;
return out_buf;
}
void DisplayPreviewData(size_t addr, const u8* mem_data, size_t mem_size, DataType data_type, DataFormat data_format, char* out_buf, size_t out_buf_size) const
{
uint8_t buf[8];
size_t elem_size = DataTypeGetSize(data_type);
size_t size = addr + elem_size > mem_size ? mem_size - addr : elem_size;
if (ReadFn)
for (int i = 0, n = (int)size; i < n; ++i)
buf[i] = ReadFn(mem_data, addr + i);
else
memcpy(buf, mem_data + addr, size);
if (data_format == DataFormat_Bin)
{
uint8_t binbuf[8];
EndianessCopy(binbuf, buf, size);
ImSnprintf(out_buf, out_buf_size, "%s", FormatBinary(binbuf, (int)size * 8));
return;
}
out_buf[0] = 0;
switch (data_type)
{
case DataType_S8:
{
int8_t int8 = 0;
EndianessCopy(&int8, buf, size);
if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%hhd", int8); return; }
if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%02x", int8 & 0xFF); return; }
break;
}
case DataType_U8:
{
uint8_t uint8 = 0;
EndianessCopy(&uint8, buf, size);
if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%hhu", uint8); return; }
if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%02x", uint8 & 0XFF); return; }
break;
}
case DataType_S16:
{
int16_t int16 = 0;
EndianessCopy(&int16, buf, size);
if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%hd", int16); return; }
if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%04x", int16 & 0xFFFF); return; }
break;
}
case DataType_U16:
{
uint16_t uint16 = 0;
EndianessCopy(&uint16, buf, size);
if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%hu", uint16); return; }
if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%04x", uint16 & 0xFFFF); return; }
break;
}
case DataType_S32:
{
int32_t int32 = 0;
EndianessCopy(&int32, buf, size);
if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%d", int32); return; }
if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%08x", int32); return; }
break;
}
case DataType_U32:
{
uint32_t uint32 = 0;
EndianessCopy(&uint32, buf, size);
if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%u", uint32); return; }
if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%08x", uint32); return; }
break;
}
case DataType_S64:
{
int64_t int64 = 0;
EndianessCopy(&int64, buf, size);
if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%lld", (long long)int64); return; }
if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%016llx", (long long)int64); return; }
break;
}
case DataType_U64:
{
uint64_t uint64 = 0;
EndianessCopy(&uint64, buf, size);
if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%llu", (long long)uint64); return; }
if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%016llx", (long long)uint64); return; }
break;
}
case DataType_Float:
{
float float32 = 0.0f;
EndianessCopy(&float32, buf, size);
if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%f", float32); return; }
if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "%a", float32); return; }
break;
}
case DataType_Double:
{
double float64 = 0.0;
EndianessCopy(&float64, buf, size);
if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%f", float64); return; }
if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "%a", float64); return; }
break;
}
case DataType_COUNT:
break;
} // Switch
IM_ASSERT(0); // Shouldn't reach
}
};
#undef _PRISizeT
#undef ImSnprintf
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// [DEAR IMGUI]
// This is a slightly modified version of stb_rect_pack.h 1.01.
// Grep for [DEAR IMGUI] to find the changes.
//
// 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).
//
// Has only had a few tests run, may have issues.
//
// More docs to come.
//
// No memory allocations; uses qsort() and assert() from stdlib.
// Can override those by defining STBRP_SORT and STBRP_ASSERT.
//
// This library currently uses the Skyline Bottom-Left algorithm.
//
// Please note: better rectangle packers are welcome! Please
// implement them to the same API, but with a different init
// function.
//
// Credits
//
// Library
// Sean Barrett
// 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
// 0.10 (2016-10-25) remove cast-away-const to avoid warnings
// 0.09 (2016-08-27) fix compiler warnings
// 0.08 (2015-09-13) really fix bug with empty rects (w=0 or h=0)
// 0.07 (2015-09-13) fix bug with empty rects (w=0 or h=0)
// 0.06 (2015-04-15) added STBRP_SORT to allow replacing qsort
// 0.05: added STBRP_ASSERT to allow replacing assert
// 0.04: fixed minor bug in STBRP_LARGE_RECTS support
// 0.01: initial release
//
// LICENSE
//
// See end of file for license information.
//////////////////////////////////////////////////////////////////////////////
//
// INCLUDE SECTION
//
#ifndef STB_INCLUDE_STB_RECT_PACK_H
#define STB_INCLUDE_STB_RECT_PACK_H
#define STB_RECT_PACK_VERSION 1
#ifdef STBRP_STATIC
#define STBRP_DEF static
#else
#define STBRP_DEF extern
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef struct stbrp_context stbrp_context;
typedef struct stbrp_node stbrp_node;
typedef struct stbrp_rect stbrp_rect;
typedef int stbrp_coord;
#define STBRP__MAXVAL 0x7fffffff
// 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
// 'stbrp_rect' defined below, stored in the array 'rects', and there
// are 'num_rects' many of them.
//
// Rectangles which are successfully packed have the 'was_packed' flag
// set to a non-zero value and 'x' and 'y' store the minimum location
// on each axis (i.e. bottom-left in cartesian coordinates, top-left
// if you imagine y increasing downwards). Rectangles which do not fit
// have the 'was_packed' flag set to 0.
//
// You should not try to access the 'rects' array from another thread
// while this function is running, as the function temporarily reorders
// the array while it executes.
//
// To pack into another rectangle, you need to call stbrp_init_target
// again. To continue packing into the same rectangle, you can call
// this function again. Calling this multiple times with multiple rect
// arrays will probably produce worse packing results than calling it
// a single time with the full rectangle array, but the option is
// available.
//
// The function returns 1 if all of the rectangles were successfully
// packed and 0 otherwise.
struct stbrp_rect
{
// reserved for your use:
int id;
// input:
stbrp_coord w, h;
// output:
stbrp_coord x, y;
int was_packed; // non-zero if valid packing
}; // 16 bytes, nominally
STBRP_DEF void stbrp_init_target (stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes);
// Initialize a rectangle packer to:
// pack a rectangle that is 'width' by 'height' in dimensions
// using temporary storage provided by the array 'nodes', which is 'num_nodes' long
//
// You must call this function every time you start packing into a new target.
//
// There is no "shutdown" function. The 'nodes' memory must stay valid for
// the following stbrp_pack_rects() call (or calls), but can be freed after
// the call (or calls) finish.
//
// Note: to guarantee best results, either:
// 1. make sure 'num_nodes' >= 'width'
// or 2. call stbrp_allow_out_of_mem() defined below with 'allow_out_of_mem = 1'
//
// If you don't do either of the above things, widths will be quantized to multiples
// of small integers to guarantee the algorithm doesn't run out of temporary storage.
//
// If you do #2, then the non-quantized algorithm will be used, but the algorithm
// may run out of temporary storage and be unable to pack some rectangles.
STBRP_DEF void stbrp_setup_allow_out_of_mem (stbrp_context *context, int allow_out_of_mem);
// Optionally call this function after init but before doing any packing to
// change the handling of the out-of-temp-memory scenario, described above.
// If you call init again, this will be reset to the default (false).
STBRP_DEF void stbrp_setup_heuristic (stbrp_context *context, int heuristic);
// Optionally select which packing heuristic the library should use. Different
// heuristics will produce better/worse results for different data sets.
// If you call init again, this will be reset to the default.
enum
{
STBRP_HEURISTIC_Skyline_default=0,
STBRP_HEURISTIC_Skyline_BL_sortHeight = STBRP_HEURISTIC_Skyline_default,
STBRP_HEURISTIC_Skyline_BF_sortHeight
};
//////////////////////////////////////////////////////////////////////////////
//
// the details of the following structures don't matter to you, but they must
// be visible so you can handle the memory allocations for them
struct stbrp_node
{
stbrp_coord x,y;
stbrp_node *next;
};
struct stbrp_context
{
int width;
int height;
int align;
int init_mode;
int heuristic;
int num_nodes;
stbrp_node *active_head;
stbrp_node *free_head;
stbrp_node extra[2]; // we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2'
};
#ifdef __cplusplus
}
#endif
#endif
//////////////////////////////////////////////////////////////////////////////
//
// IMPLEMENTATION SECTION
//
#ifdef STB_RECT_PACK_IMPLEMENTATION
#ifndef STBRP_SORT
#include <stdlib.h>
#define STBRP_SORT qsort
#endif
#ifndef STBRP_ASSERT
#include <assert.h>
#define STBRP_ASSERT assert
#endif
#ifdef _MSC_VER
#define STBRP__NOTUSED(v) (void)(v)
#define STBRP__CDECL __cdecl
#else
#define STBRP__NOTUSED(v) (void)sizeof(v)
#define STBRP__CDECL
#endif
enum
{
STBRP__INIT_skyline = 1
};
STBRP_DEF void stbrp_setup_heuristic(stbrp_context *context, int heuristic)
{
switch (context->init_mode) {
case STBRP__INIT_skyline:
STBRP_ASSERT(heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight || heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight);
context->heuristic = heuristic;
break;
default:
STBRP_ASSERT(0);
}
}
STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_out_of_mem)
{
if (allow_out_of_mem)
// if it's ok to run out of memory, then don't bother aligning them;
// this gives better packing, but may fail due to OOM (even though
// the rectangles easily fit). @TODO a smarter approach would be to only
// quantize once we've hit OOM, then we could get rid of this parameter.
context->align = 1;
else {
// if it's not ok to run out of memory, then quantize the widths
// so that num_nodes is always enough nodes.
//
// I.e. num_nodes * align >= width
// align >= width / num_nodes
// align = ceil(width/num_nodes)
context->align = (context->width + context->num_nodes-1) / context->num_nodes;
}
}
STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes)
{
int i;
for (i=0; i < num_nodes-1; ++i)
nodes[i].next = &nodes[i+1];
nodes[i].next = NULL;
context->init_mode = STBRP__INIT_skyline;
context->heuristic = STBRP_HEURISTIC_Skyline_default;
context->free_head = &nodes[0];
context->active_head = &context->extra[0];
context->width = width;
context->height = height;
context->num_nodes = num_nodes;
stbrp_setup_allow_out_of_mem(context, 0);
// node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly)
context->extra[0].x = 0;
context->extra[0].y = 0;
context->extra[0].next = &context->extra[1];
context->extra[1].x = (stbrp_coord) width;
context->extra[1].y = (1<<30);
context->extra[1].next = NULL;
}
// find minimum y position if it starts at x1
static int stbrp__skyline_find_min_y(stbrp_context *c, stbrp_node *first, int x0, int width, int *pwaste)
{
stbrp_node *node = first;
int x1 = x0 + width;
int min_y, visited_width, waste_area;
STBRP__NOTUSED(c);
STBRP_ASSERT(first->x <= x0);
#if 0
// skip in case we're past the node
while (node->next->x <= x0)
++node;
#else
STBRP_ASSERT(node->next->x > x0); // we ended up handling this in the caller for efficiency
#endif
STBRP_ASSERT(node->x <= x0);
min_y = 0;
waste_area = 0;
visited_width = 0;
while (node->x < x1) {
if (node->y > min_y) {
// raise min_y higher.
// we've accounted for all waste up to min_y,
// but we'll now add more waste for everything we've visted
waste_area += visited_width * (node->y - min_y);
min_y = node->y;
// the first time through, visited_width might be reduced
if (node->x < x0)
visited_width += node->next->x - x0;
else
visited_width += node->next->x - node->x;
} else {
// add waste area
int under_width = node->next->x - node->x;
if (under_width + visited_width > width)
under_width = width - visited_width;
waste_area += under_width * (min_y - node->y);
visited_width += under_width;
}
node = node->next;
}
*pwaste = waste_area;
return min_y;
}
typedef struct
{
int x,y;
stbrp_node **prev_link;
} stbrp__findresult;
static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int width, int height)
{
int best_waste = (1<<30), best_x, best_y = (1 << 30);
stbrp__findresult fr;
stbrp_node **prev, *node, *tail, **best = NULL;
// align to multiple of c->align
width = (width + c->align - 1);
width -= width % c->align;
STBRP_ASSERT(width % c->align == 0);
// if it can't possibly fit, bail immediately
if (width > c->width || height > c->height) {
fr.prev_link = NULL;
fr.x = fr.y = 0;
return fr;
}
node = c->active_head;
prev = &c->active_head;
while (node->x + width <= c->width) {
int y,waste;
y = stbrp__skyline_find_min_y(c, node, node->x, width, &waste);
if (c->heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight) { // actually just want to test BL
// bottom left
if (y < best_y) {
best_y = y;
best = prev;
}
} else {
// best-fit
if (y + height <= c->height) {
// can only use it if it first vertically
if (y < best_y || (y == best_y && waste < best_waste)) {
best_y = y;
best_waste = waste;
best = prev;
}
}
}
prev = &node->next;
node = node->next;
}
best_x = (best == NULL) ? 0 : (*best)->x;
// if doing best-fit (BF), we also have to try aligning right edge to each node position
//
// e.g, if fitting
//
// ____________________
// |____________________|
//
// into
//
// | |
// | ____________|
// |____________|
//
// then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned
//
// This makes BF take about 2x the time
if (c->heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight) {
tail = c->active_head;
node = c->active_head;
prev = &c->active_head;
// find first node that's admissible
while (tail->x < width)
tail = tail->next;
while (tail) {
int xpos = tail->x - width;
int y,waste;
STBRP_ASSERT(xpos >= 0);
// find the left position that matches this
while (node->next->x <= xpos) {
prev = &node->next;
node = node->next;
}
STBRP_ASSERT(node->next->x > xpos && node->x <= xpos);
y = stbrp__skyline_find_min_y(c, node, xpos, width, &waste);
if (y + height <= c->height) {
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); [DEAR IMGUI]
best_y = y;
best_waste = waste;
best = prev;
}
}
}
tail = tail->next;
}
}
fr.prev_link = best;
fr.x = best_x;
fr.y = best_y;
return fr;
}
static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, int width, int height)
{
// find best position according to heuristic
stbrp__findresult res = stbrp__skyline_find_best_pos(context, width, height);
stbrp_node *node, *cur;
// bail if:
// 1. it failed
// 2. the best node doesn't fit (we don't always check this)
// 3. we're out of memory
if (res.prev_link == NULL || res.y + height > context->height || context->free_head == NULL) {
res.prev_link = NULL;
return res;
}
// on success, create new node
node = context->free_head;
node->x = (stbrp_coord) res.x;
node->y = (stbrp_coord) (res.y + height);
context->free_head = node->next;
// insert the new node into the right starting point, and
// let 'cur' point to the remaining nodes needing to be
// stiched back in
cur = *res.prev_link;
if (cur->x < res.x) {
// preserve the existing one, so start testing with the next one
stbrp_node *next = cur->next;
cur->next = node;
cur = next;
} else {
*res.prev_link = node;
}
// from here, traverse cur and free the nodes, until we get to one
// that shouldn't be freed
while (cur->next && cur->next->x <= res.x + width) {
stbrp_node *next = cur->next;
// move the current node to the free list
cur->next = context->free_head;
context->free_head = cur;
cur = next;
}
// stitch the list back in
node->next = cur;
if (cur->x < res.x + width)
cur->x = (stbrp_coord) (res.x + width);
#ifdef _DEBUG
cur = context->active_head;
while (cur->x < context->width) {
STBRP_ASSERT(cur->x < cur->next->x);
cur = cur->next;
}
STBRP_ASSERT(cur->next == NULL);
{
int count=0;
cur = context->active_head;
while (cur) {
cur = cur->next;
++count;
}
cur = context->free_head;
while (cur) {
cur = cur->next;
++count;
}
STBRP_ASSERT(count == context->num_nodes+2);
}
#endif
return res;
}
static int STBRP__CDECL rect_height_compare(const void *a, const void *b)
{
const stbrp_rect *p = (const stbrp_rect *) a;
const stbrp_rect *q = (const stbrp_rect *) b;
if (p->h > q->h)
return -1;
if (p->h < q->h)
return 1;
return (p->w > q->w) ? -1 : (p->w < q->w);
}
static int STBRP__CDECL rect_original_order(const void *a, const void *b)
{
const stbrp_rect *p = (const stbrp_rect *) a;
const stbrp_rect *q = (const stbrp_rect *) b;
return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
}
STBRP_DEF int stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
{
int i, all_rects_packed = 1;
// we use the 'was_packed' field internally to allow sorting/unsorting
for (i=0; i < num_rects; ++i) {
rects[i].was_packed = i;
}
// sort according to heuristic
STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_height_compare);
for (i=0; i < num_rects; ++i) {
if (rects[i].w == 0 || rects[i].h == 0) {
rects[i].x = rects[i].y = 0; // empty rect needs no space
} else {
stbrp__findresult fr = stbrp__skyline_pack_rectangle(context, rects[i].w, rects[i].h);
if (fr.prev_link) {
rects[i].x = (stbrp_coord) fr.x;
rects[i].y = (stbrp_coord) fr.y;
} else {
rects[i].x = rects[i].y = STBRP__MAXVAL;
}
}
}
// unsort
STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_original_order);
// set was_packed flags and all_rects_packed status
for (i=0; i < num_rects; ++i) {
rects[i].was_packed = !(rects[i].x == STBRP__MAXVAL && rects[i].y == STBRP__MAXVAL);
if (!rects[i].was_packed)
all_rects_packed = 0;
}
// return the all_rects_packed status
return all_rects_packed;
}
#endif
/*
------------------------------------------------------------------------------
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
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
AUTHORS OR COPYRIGHT HOLDERS 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 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
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
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
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
this software under copyright law.
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
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
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
------------------------------------------------------------------------------
*/
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