mirror of
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imGui: Use imGui as a git submodule for easier updates
This commit is contained in:
Joel16
parent
c7b7bc0ff0
commit
bc0d40fb9a
3
.gitmodules
vendored
Normal file
3
.gitmodules
vendored
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@ -0,0 +1,3 @@
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[submodule "libs/imgui"]
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path = libs/imgui
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url = https://github.com/ocornut/imgui.git
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@ -17,9 +17,13 @@ set(VITA_TITLEID "VITALBUM0")
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set(VITA_VERSION "01.40")
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add_definitions(-DAPP_VERSION="${VITA_VERSION}")
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add_definitions(
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-DIMGUI_DISABLE_OBSOLETE_FUNCTIONS -DIMGUI_DISABLE_DEMO_WINDOWS -DIMGUI_DISABLE_METRICS_WINDOW
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-DIMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS -DIMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS
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-DIMGUI_DISABLE_WIN32_FUNCTIONS -DIMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION -DIMGUI_ENABLE_FREETYPE
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)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -g -mtune=cortex-a9 -mfpu=neon -Wall")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-psabi -fno-exceptions -fno-rtti -std=gnu++17")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3 -ffast-math -mtune=cortex-a9 -mfpu=neon -Wall -Wno-psabi -fno-rtti -std=gnu++17")
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set(VITA_MKSFOEX_FLAGS "${VITA_MKSFOEX_FLAGS} -d PARENTAL_LEVEL=1")
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include_directories(
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@ -40,7 +44,6 @@ link_directories(
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add_executable(${PROJECT_NAME}
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libs/imgui/imgui.cpp
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libs/imgui/imgui_draw.cpp
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libs/imgui/imgui_impl_vitagl.cpp
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libs/imgui/imgui_tables.cpp
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libs/imgui/imgui_widgets.cpp
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libs/imgui/misc/freetype/imgui_freetype.cpp
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@ -51,6 +54,7 @@ add_executable(${PROJECT_NAME}
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source/fs.cpp
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source/gui.cpp
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source/image.cpp
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source/imgui_impl_vitagl.cpp
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source/keyboard.cpp
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source/log.cpp
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source/main.cpp
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1
libs/imgui
Submodule
1
libs/imgui
Submodule
@ -0,0 +1 @@
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Subproject commit 512c54bbc062c41c74f8a8bd8ff1fd6bebd1e6d0
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@ -1,21 +0,0 @@
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The MIT License (MIT)
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Copyright (c) 2014-2021 Omar Cornut
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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@ -1,122 +0,0 @@
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//-----------------------------------------------------------------------------
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// COMPILE-TIME OPTIONS FOR DEAR IMGUI
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// Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via the ImGuiIO structure.
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// You can use ImGui::SetAllocatorFunctions() before calling ImGui::CreateContext() to rewire memory allocation functions.
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//-----------------------------------------------------------------------------
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// 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)
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// 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.
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//-----------------------------------------------------------------------------
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// You need to make sure that configuration settings are defined consistently _everywhere_ Dear ImGui is used, which include the imgui*.cpp
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// files but also _any_ of your code that uses Dear ImGui. This is because some compile-time options have an affect on data structures.
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// Defining those options in imconfig.h will ensure every compilation unit gets to see the same data structure layouts.
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// 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.
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//-----------------------------------------------------------------------------
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#pragma once
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//---- Define assertion handler. Defaults to calling assert().
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// 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.
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//#define IM_ASSERT(_EXPR) MyAssert(_EXPR)
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//#define IM_ASSERT(_EXPR) ((void)(_EXPR)) // Disable asserts
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//---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
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// 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.
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// DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
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// for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
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//#define IMGUI_API __declspec( dllexport )
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//#define IMGUI_API __declspec( dllimport )
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//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to avoid using soon-to-be obsolete function/names.
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#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
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//---- Disable all of Dear ImGui or don't implement standard windows.
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// It is very strongly recommended to NOT disable the demo windows during development. Please read comments in imgui_demo.cpp.
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//#define IMGUI_DISABLE // Disable everything: all headers and source files will be empty.
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#define IMGUI_DISABLE_DEMO_WINDOWS // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty. Not recommended.
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#define IMGUI_DISABLE_METRICS_WINDOW // Disable metrics/debugger and other debug tools: ShowMetricsWindow() and ShowStackToolWindow() will be empty.
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//---- Don't implement some functions to reduce linkage requirements.
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#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)
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//#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)
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#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)
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#define IMGUI_DISABLE_WIN32_FUNCTIONS // [Win32] Won't use and link with any Win32 function (clipboard, ime).
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//#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).
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//#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)
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//#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
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//#define IMGUI_DISABLE_FILE_FUNCTIONS // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle at all (replace them with dummies)
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//#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.
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//#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().
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//#define IMGUI_DISABLE_SSE // Disable use of SSE intrinsics even if available
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//---- Include imgui_user.h at the end of imgui.h as a convenience
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//#define IMGUI_INCLUDE_IMGUI_USER_H
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//---- Pack colors to BGRA8 instead of RGBA8 (to avoid converting from one to another)
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//#define IMGUI_USE_BGRA_PACKED_COLOR
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//---- 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...)
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//#define IMGUI_USE_WCHAR32
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//---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
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// By default the embedded implementations are declared static and not available outside of Dear ImGui sources files.
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//#define IMGUI_STB_TRUETYPE_FILENAME "my_folder/stb_truetype.h"
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//#define IMGUI_STB_RECT_PACK_FILENAME "my_folder/stb_rect_pack.h"
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#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
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//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
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//---- Use stb_printf's faster implementation of vsnprintf instead of the one from libc (unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined)
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// Requires 'stb_sprintf.h' to be available in the include path. Compatibility checks of arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by STB sprintf.
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// #define IMGUI_USE_STB_SPRINTF
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//---- Use FreeType to build and rasterize the font atlas (instead of stb_truetype which is embedded by default in Dear ImGui)
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// 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).
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// On Windows you may use vcpkg with 'vcpkg install freetype --triplet=x64-windows' + 'vcpkg integrate install'.
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#define IMGUI_ENABLE_FREETYPE
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//---- Use stb_truetype to build and rasterize the font atlas (default)
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// The only purpose of this define is if you want force compilation of the stb_truetype backend ALONG with the FreeType backend.
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//#define IMGUI_ENABLE_STB_TRUETYPE
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//---- Define constructor and implicit cast operators to convert back<>forth between your math types and ImVec2/ImVec4.
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// This will be inlined as part of ImVec2 and ImVec4 class declarations.
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/*
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#define IM_VEC2_CLASS_EXTRA \
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ImVec2(const MyVec2& f) { x = f.x; y = f.y; } \
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operator MyVec2() const { return MyVec2(x,y); }
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#define IM_VEC4_CLASS_EXTRA \
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ImVec4(const MyVec4& f) { x = f.x; y = f.y; z = f.z; w = f.w; } \
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operator MyVec4() const { return MyVec4(x,y,z,w); }
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*/
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//---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than 64K vertices.
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// Your renderer backend will need to support it (most example renderer backends support both 16/32-bit indices).
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// Another way to allow large meshes while keeping 16-bit indices is to handle ImDrawCmd::VtxOffset in your renderer.
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// Read about ImGuiBackendFlags_RendererHasVtxOffset for details.
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//#define ImDrawIdx unsigned int
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//---- Override ImDrawCallback signature (will need to modify renderer backends accordingly)
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//struct ImDrawList;
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//struct ImDrawCmd;
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//typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void* my_renderer_user_data);
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//#define ImDrawCallback MyImDrawCallback
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//---- Debug Tools: Macro to break in Debugger
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// (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.)
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//#define IM_DEBUG_BREAK IM_ASSERT(0)
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//#define IM_DEBUG_BREAK __debugbreak()
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//---- Debug Tools: Have the Item Picker break in the ItemAdd() function instead of ItemHoverable(),
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// (which comes earlier in the code, will catch a few extra items, allow picking items other than Hovered one.)
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// This adds a small runtime cost which is why it is not enabled by default.
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//#define IMGUI_DEBUG_TOOL_ITEM_PICKER_EX
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//---- Debug Tools: Enable slower asserts
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//#define IMGUI_DEBUG_PARANOID
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//---- Tip: You can add extra functions within the ImGui:: namespace, here or in your own headers files.
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/*
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namespace ImGui
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{
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void MyFunction(const char* name, const MyMatrix44& v);
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}
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*/
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12627
libs/imgui/imgui.cpp
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libs/imgui/imgui.h
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@ -1,639 +0,0 @@
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// [DEAR IMGUI]
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// This is a slightly modified version of stb_rect_pack.h 1.00.
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// Those changes would need to be pushed into nothings/stb:
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// - Added STBRP__CDECL
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// Grep for [DEAR IMGUI] to find the changes.
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// stb_rect_pack.h - v1.00 - public domain - rectangle packing
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// Sean Barrett 2014
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//
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// Useful for e.g. packing rectangular textures into an atlas.
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// Does not do rotation.
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//
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// Not necessarily the awesomest packing method, but better than
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// the totally naive one in stb_truetype (which is primarily what
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// this is meant to replace).
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//
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// Has only had a few tests run, may have issues.
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//
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// More docs to come.
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//
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// No memory allocations; uses qsort() and assert() from stdlib.
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// Can override those by defining STBRP_SORT and STBRP_ASSERT.
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//
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// This library currently uses the Skyline Bottom-Left algorithm.
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//
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// Please note: better rectangle packers are welcome! Please
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// implement them to the same API, but with a different init
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// function.
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//
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// Credits
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//
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// Library
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// Sean Barrett
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// Minor features
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// Martins Mozeiko
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// github:IntellectualKitty
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//
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// Bugfixes / warning fixes
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// Jeremy Jaussaud
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// Fabian Giesen
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//
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// Version history:
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//
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// 1.00 (2019-02-25) avoid small space waste; gracefully fail too-wide rectangles
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// 0.99 (2019-02-07) warning fixes
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// 0.11 (2017-03-03) return packing success/fail result
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// 0.10 (2016-10-25) remove cast-away-const to avoid warnings
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// 0.09 (2016-08-27) fix compiler warnings
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// 0.08 (2015-09-13) really fix bug with empty rects (w=0 or h=0)
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// 0.07 (2015-09-13) fix bug with empty rects (w=0 or h=0)
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// 0.06 (2015-04-15) added STBRP_SORT to allow replacing qsort
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// 0.05: added STBRP_ASSERT to allow replacing assert
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// 0.04: fixed minor bug in STBRP_LARGE_RECTS support
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// 0.01: initial release
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//
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// LICENSE
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//
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// See end of file for license information.
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//////////////////////////////////////////////////////////////////////////////
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//
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// INCLUDE SECTION
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//
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#ifndef STB_INCLUDE_STB_RECT_PACK_H
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#define STB_INCLUDE_STB_RECT_PACK_H
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#define STB_RECT_PACK_VERSION 1
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#ifdef STBRP_STATIC
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#define STBRP_DEF static
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#else
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#define STBRP_DEF extern
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct stbrp_context stbrp_context;
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typedef struct stbrp_node stbrp_node;
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typedef struct stbrp_rect stbrp_rect;
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#ifdef STBRP_LARGE_RECTS
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typedef int stbrp_coord;
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#else
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typedef unsigned short stbrp_coord;
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#endif
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STBRP_DEF int stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
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// Assign packed locations to rectangles. The rectangles are of type
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// 'stbrp_rect' defined below, stored in the array 'rects', and there
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// are 'num_rects' many of them.
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//
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// Rectangles which are successfully packed have the 'was_packed' flag
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// set to a non-zero value and 'x' and 'y' store the minimum location
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// on each axis (i.e. bottom-left in cartesian coordinates, top-left
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// if you imagine y increasing downwards). Rectangles which do not fit
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// have the 'was_packed' flag set to 0.
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//
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// You should not try to access the 'rects' array from another thread
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// while this function is running, as the function temporarily reorders
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// the array while it executes.
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//
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// To pack into another rectangle, you need to call stbrp_init_target
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// again. To continue packing into the same rectangle, you can call
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// this function again. Calling this multiple times with multiple rect
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// arrays will probably produce worse packing results than calling it
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// a single time with the full rectangle array, but the option is
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// available.
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//
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// The function returns 1 if all of the rectangles were successfully
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// packed and 0 otherwise.
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struct stbrp_rect
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{
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// reserved for your use:
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int id;
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// input:
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stbrp_coord w, h;
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// output:
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stbrp_coord x, y;
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int was_packed; // non-zero if valid packing
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}; // 16 bytes, nominally
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STBRP_DEF void stbrp_init_target (stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes);
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// Initialize a rectangle packer to:
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// pack a rectangle that is 'width' by 'height' in dimensions
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// using temporary storage provided by the array 'nodes', which is 'num_nodes' long
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//
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// You must call this function every time you start packing into a new target.
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//
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// There is no "shutdown" function. The 'nodes' memory must stay valid for
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// the following stbrp_pack_rects() call (or calls), but can be freed after
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// the call (or calls) finish.
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//
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// Note: to guarantee best results, either:
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// 1. make sure 'num_nodes' >= 'width'
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// or 2. call stbrp_allow_out_of_mem() defined below with 'allow_out_of_mem = 1'
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//
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// If you don't do either of the above things, widths will be quantized to multiples
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// of small integers to guarantee the algorithm doesn't run out of temporary storage.
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//
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// If you do #2, then the non-quantized algorithm will be used, but the algorithm
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// may run out of temporary storage and be unable to pack some rectangles.
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STBRP_DEF void stbrp_setup_allow_out_of_mem (stbrp_context *context, int allow_out_of_mem);
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// Optionally call this function after init but before doing any packing to
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// change the handling of the out-of-temp-memory scenario, described above.
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// If you call init again, this will be reset to the default (false).
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STBRP_DEF void stbrp_setup_heuristic (stbrp_context *context, int heuristic);
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// Optionally select which packing heuristic the library should use. Different
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// heuristics will produce better/worse results for different data sets.
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// If you call init again, this will be reset to the default.
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enum
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{
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STBRP_HEURISTIC_Skyline_default=0,
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STBRP_HEURISTIC_Skyline_BL_sortHeight = STBRP_HEURISTIC_Skyline_default,
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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
|
||||
|
||||
// [DEAR IMGUI] Added STBRP__CDECL
|
||||
#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;
|
||||
#ifndef STBRP_LARGE_RECTS
|
||||
STBRP_ASSERT(width <= 0xffff && height <= 0xffff);
|
||||
#endif
|
||||
|
||||
for (i=0; i < num_nodes-1; ++i)
|
||||
nodes[i].next = &nodes[i+1];
|
||||
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;
|
||||
#ifdef STBRP_LARGE_RECTS
|
||||
context->extra[1].y = (1<<30);
|
||||
#else
|
||||
context->extra[1].y = 65535;
|
||||
#endif
|
||||
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);
|
||||
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;
|
||||
}
|
||||
|
||||
// [DEAR IMGUI] Added STBRP__CDECL
|
||||
static int STBRP__CDECL rect_height_compare(const void *a, const void *b)
|
||||
{
|
||||
const stbrp_rect *p = (const stbrp_rect *) a;
|
||||
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);
|
||||
}
|
||||
|
||||
// [DEAR IMGUI] Added STBRP__CDECL
|
||||
static int STBRP__CDECL rect_original_order(const void *a, const void *b)
|
||||
{
|
||||
const stbrp_rect *p = (const stbrp_rect *) a;
|
||||
const stbrp_rect *q = (const stbrp_rect *) b;
|
||||
return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
|
||||
}
|
||||
|
||||
#ifdef STBRP_LARGE_RECTS
|
||||
#define STBRP__MAXVAL 0xffffffff
|
||||
#else
|
||||
#define STBRP__MAXVAL 0xffff
|
||||
#endif
|
||||
|
||||
STBRP_DEF int stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
|
||||
{
|
||||
int i, all_rects_packed = 1;
|
||||
|
||||
// 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.
|
||||
------------------------------------------------------------------------------
|
||||
*/
|
||||
File diff suppressed because it is too large
Load Diff
@ -1,37 +0,0 @@
|
||||
# imgui_freetype
|
||||
|
||||
Build font atlases using FreeType instead of stb_truetype (which is the default font rasterizer).
|
||||
<br>by @vuhdo, @mikesart, @ocornut.
|
||||
|
||||
### Usage
|
||||
|
||||
1. Get latest FreeType binaries or build yourself (under Windows you may use vcpkg with `vcpkg install freetype --triplet=x64-windows`, `vcpkg integrate install`).
|
||||
2. Add imgui_freetype.h/cpp alongside your project files.
|
||||
3. Add `#define IMGUI_ENABLE_FREETYPE` in your [imconfig.h](https://github.com/ocornut/imgui/blob/master/imconfig.h) file
|
||||
|
||||
### About Gamma Correct Blending
|
||||
|
||||
FreeType assumes blending in linear space rather than gamma space.
|
||||
See FreeType note for [FT_Render_Glyph](https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_Render_Glyph).
|
||||
For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
|
||||
The default Dear ImGui styles will be impacted by this change (alpha values will need tweaking).
|
||||
|
||||
### Testbed for toying with settings (for developers)
|
||||
|
||||
See https://gist.github.com/ocornut/b3a9ecf13502fd818799a452969649ad
|
||||
|
||||
### Known issues
|
||||
|
||||
- Oversampling settins are ignored but also not so much necessary with the higher quality rendering.
|
||||
|
||||
### Comparaison
|
||||
|
||||
Small, thin anti-aliased fonts are typically benefiting a lots from Freetype's hinting:
|
||||
|
||||
|
||||
### Colorful glyphs/emojis
|
||||
|
||||
You can use the `ImGuiFreeTypeBuilderFlags_LoadColor` flag to load certain colorful glyphs. See
|
||||
["Using Colorful Glyphs/Emojis"](https://github.com/ocornut/imgui/edit/master/docs/FONTS.md#using-colorful-glyphsemojis) section of FONTS.md.
|
||||
|
||||
|
||||
@ -1,779 +0,0 @@
|
||||
// dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
|
||||
// (code)
|
||||
|
||||
// Get the latest version at https://github.com/ocornut/imgui/tree/master/misc/freetype
|
||||
// Original code by @vuhdo (Aleksei Skriabin). Improvements by @mikesart. Maintained since 2019 by @ocornut.
|
||||
|
||||
// CHANGELOG
|
||||
// (minor and older changes stripped away, please see git history for details)
|
||||
// 2021/08/23: fixed crash when FT_Render_Glyph() fails to render a glyph and returns NULL.
|
||||
// 2021/03/05: added ImGuiFreeTypeBuilderFlags_Bitmap to load bitmap glyphs.
|
||||
// 2021/03/02: set 'atlas->TexPixelsUseColors = true' to help some backends with deciding of a prefered texture format.
|
||||
// 2021/01/28: added support for color-layered glyphs via ImGuiFreeTypeBuilderFlags_LoadColor (require Freetype 2.10+).
|
||||
// 2021/01/26: simplified integration by using '#define IMGUI_ENABLE_FREETYPE'.
|
||||
// renamed ImGuiFreeType::XXX flags to ImGuiFreeTypeBuilderFlags_XXX for consistency with other API. removed ImGuiFreeType::BuildFontAtlas().
|
||||
// 2020/06/04: fix for rare case where FT_Get_Char_Index() succeed but FT_Load_Glyph() fails.
|
||||
// 2019/02/09: added RasterizerFlags::Monochrome flag to disable font anti-aliasing (combine with ::MonoHinting for best results!)
|
||||
// 2019/01/15: added support for imgui allocators + added FreeType only override function SetAllocatorFunctions().
|
||||
// 2019/01/10: re-factored to match big update in STB builder. fixed texture height waste. fixed redundant glyphs when merging. support for glyph padding.
|
||||
// 2018/06/08: added support for ImFontConfig::GlyphMinAdvanceX, GlyphMaxAdvanceX.
|
||||
// 2018/02/04: moved to main imgui repository (away from http://www.github.com/ocornut/imgui_club)
|
||||
// 2018/01/22: fix for addition of ImFontAtlas::TexUvscale member.
|
||||
// 2017/10/22: minor inconsequential change to match change in master (removed an unnecessary statement).
|
||||
// 2017/09/26: fixes for imgui internal changes.
|
||||
// 2017/08/26: cleanup, optimizations, support for ImFontConfig::RasterizerFlags, ImFontConfig::RasterizerMultiply.
|
||||
// 2017/08/16: imported from https://github.com/Vuhdo/imgui_freetype into http://www.github.com/ocornut/imgui_club, updated for latest changes in ImFontAtlas, minor tweaks.
|
||||
|
||||
// About Gamma Correct Blending:
|
||||
// - FreeType assumes blending in linear space rather than gamma space.
|
||||
// - See https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_Render_Glyph
|
||||
// - For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
|
||||
// - The default dear imgui styles will be impacted by this change (alpha values will need tweaking).
|
||||
|
||||
// FIXME: cfg.OversampleH, OversampleV are not supported (but perhaps not so necessary with this rasterizer).
|
||||
|
||||
#include "imgui_freetype.h"
|
||||
#include "imgui_internal.h" // ImMin,ImMax,ImFontAtlasBuild*,
|
||||
#include <stdint.h>
|
||||
#include <ft2build.h>
|
||||
#include FT_FREETYPE_H // <freetype/freetype.h>
|
||||
#include FT_MODULE_H // <freetype/ftmodapi.h>
|
||||
#include FT_GLYPH_H // <freetype/ftglyph.h>
|
||||
#include FT_SYNTHESIS_H // <freetype/ftsynth.h>
|
||||
|
||||
#ifdef _MSC_VER
|
||||
#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
|
||||
#pragma warning (disable: 26812) // [Static Analyzer] The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3).
|
||||
#endif
|
||||
|
||||
#if defined(__GNUC__)
|
||||
#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind
|
||||
#pragma GCC diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used
|
||||
#endif
|
||||
|
||||
//-------------------------------------------------------------------------
|
||||
// Data
|
||||
//-------------------------------------------------------------------------
|
||||
|
||||
// Default memory allocators
|
||||
static void* ImGuiFreeTypeDefaultAllocFunc(size_t size, void* user_data) { IM_UNUSED(user_data); return IM_ALLOC(size); }
|
||||
static void ImGuiFreeTypeDefaultFreeFunc(void* ptr, void* user_data) { IM_UNUSED(user_data); IM_FREE(ptr); }
|
||||
|
||||
// Current memory allocators
|
||||
static void* (*GImGuiFreeTypeAllocFunc)(size_t size, void* user_data) = ImGuiFreeTypeDefaultAllocFunc;
|
||||
static void (*GImGuiFreeTypeFreeFunc)(void* ptr, void* user_data) = ImGuiFreeTypeDefaultFreeFunc;
|
||||
static void* GImGuiFreeTypeAllocatorUserData = NULL;
|
||||
|
||||
//-------------------------------------------------------------------------
|
||||
// Code
|
||||
//-------------------------------------------------------------------------
|
||||
|
||||
namespace
|
||||
{
|
||||
// Glyph metrics:
|
||||
// --------------
|
||||
//
|
||||
// xmin xmax
|
||||
// | |
|
||||
// |<-------- width -------->|
|
||||
// | |
|
||||
// | +-------------------------+----------------- ymax
|
||||
// | | ggggggggg ggggg | ^ ^
|
||||
// | | g:::::::::ggg::::g | | |
|
||||
// | | g:::::::::::::::::g | | |
|
||||
// | | g::::::ggggg::::::gg | | |
|
||||
// | | g:::::g g:::::g | | |
|
||||
// offsetX -|-------->| g:::::g g:::::g | offsetY |
|
||||
// | | g:::::g g:::::g | | |
|
||||
// | | g::::::g g:::::g | | |
|
||||
// | | g:::::::ggggg:::::g | | |
|
||||
// | | g::::::::::::::::g | | height
|
||||
// | | gg::::::::::::::g | | |
|
||||
// baseline ---*---------|---- gggggggg::::::g-----*-------- |
|
||||
// / | | g:::::g | |
|
||||
// origin | | gggggg g:::::g | |
|
||||
// | | g:::::gg gg:::::g | |
|
||||
// | | g::::::ggg:::::::g | |
|
||||
// | | gg:::::::::::::g | |
|
||||
// | | ggg::::::ggg | |
|
||||
// | | gggggg | v
|
||||
// | +-------------------------+----------------- ymin
|
||||
// | |
|
||||
// |------------- advanceX ----------->|
|
||||
|
||||
// A structure that describe a glyph.
|
||||
struct GlyphInfo
|
||||
{
|
||||
int Width; // Glyph's width in pixels.
|
||||
int Height; // Glyph's height in pixels.
|
||||
FT_Int OffsetX; // The distance from the origin ("pen position") to the left of the glyph.
|
||||
FT_Int OffsetY; // The distance from the origin to the top of the glyph. This is usually a value < 0.
|
||||
float AdvanceX; // The distance from the origin to the origin of the next glyph. This is usually a value > 0.
|
||||
bool IsColored; // The glyph is colored
|
||||
};
|
||||
|
||||
// Font parameters and metrics.
|
||||
struct FontInfo
|
||||
{
|
||||
uint32_t PixelHeight; // Size this font was generated with.
|
||||
float Ascender; // The pixel extents above the baseline in pixels (typically positive).
|
||||
float Descender; // The extents below the baseline in pixels (typically negative).
|
||||
float LineSpacing; // The baseline-to-baseline distance. Note that it usually is larger than the sum of the ascender and descender taken as absolute values. There is also no guarantee that no glyphs extend above or below subsequent baselines when using this distance. Think of it as a value the designer of the font finds appropriate.
|
||||
float LineGap; // The spacing in pixels between one row's descent and the next row's ascent.
|
||||
float MaxAdvanceWidth; // This field gives the maximum horizontal cursor advance for all glyphs in the font.
|
||||
};
|
||||
|
||||
// FreeType glyph rasterizer.
|
||||
// NB: No ctor/dtor, explicitly call Init()/Shutdown()
|
||||
struct FreeTypeFont
|
||||
{
|
||||
bool InitFont(FT_Library ft_library, const ImFontConfig& cfg, unsigned int extra_user_flags); // Initialize from an external data buffer. Doesn't copy data, and you must ensure it stays valid up to this object lifetime.
|
||||
void CloseFont();
|
||||
void SetPixelHeight(int pixel_height); // Change font pixel size. All following calls to RasterizeGlyph() will use this size
|
||||
const FT_Glyph_Metrics* LoadGlyph(uint32_t in_codepoint);
|
||||
const FT_Bitmap* RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info);
|
||||
void BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch, unsigned char* multiply_table = NULL);
|
||||
~FreeTypeFont() { CloseFont(); }
|
||||
|
||||
// [Internals]
|
||||
FontInfo Info; // Font descriptor of the current font.
|
||||
FT_Face Face;
|
||||
unsigned int UserFlags; // = ImFontConfig::RasterizerFlags
|
||||
FT_Int32 LoadFlags;
|
||||
FT_Render_Mode RenderMode;
|
||||
};
|
||||
|
||||
// From SDL_ttf: Handy routines for converting from fixed point
|
||||
#define FT_CEIL(X) (((X + 63) & -64) / 64)
|
||||
|
||||
bool FreeTypeFont::InitFont(FT_Library ft_library, const ImFontConfig& cfg, unsigned int extra_font_builder_flags)
|
||||
{
|
||||
FT_Error error = FT_New_Memory_Face(ft_library, (uint8_t*)cfg.FontData, (uint32_t)cfg.FontDataSize, (uint32_t)cfg.FontNo, &Face);
|
||||
if (error != 0)
|
||||
return false;
|
||||
error = FT_Select_Charmap(Face, FT_ENCODING_UNICODE);
|
||||
if (error != 0)
|
||||
return false;
|
||||
|
||||
// Convert to FreeType flags (NB: Bold and Oblique are processed separately)
|
||||
UserFlags = cfg.FontBuilderFlags | extra_font_builder_flags;
|
||||
|
||||
LoadFlags = 0;
|
||||
if ((UserFlags & ImGuiFreeTypeBuilderFlags_Bitmap) == 0)
|
||||
LoadFlags |= FT_LOAD_NO_BITMAP;
|
||||
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_NoHinting)
|
||||
LoadFlags |= FT_LOAD_NO_HINTING;
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_NoAutoHint)
|
||||
LoadFlags |= FT_LOAD_NO_AUTOHINT;
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_ForceAutoHint)
|
||||
LoadFlags |= FT_LOAD_FORCE_AUTOHINT;
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_LightHinting)
|
||||
LoadFlags |= FT_LOAD_TARGET_LIGHT;
|
||||
else if (UserFlags & ImGuiFreeTypeBuilderFlags_MonoHinting)
|
||||
LoadFlags |= FT_LOAD_TARGET_MONO;
|
||||
else
|
||||
LoadFlags |= FT_LOAD_TARGET_NORMAL;
|
||||
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_Monochrome)
|
||||
RenderMode = FT_RENDER_MODE_MONO;
|
||||
else
|
||||
RenderMode = FT_RENDER_MODE_NORMAL;
|
||||
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_LoadColor)
|
||||
LoadFlags |= FT_LOAD_COLOR;
|
||||
|
||||
memset(&Info, 0, sizeof(Info));
|
||||
SetPixelHeight((uint32_t)cfg.SizePixels);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void FreeTypeFont::CloseFont()
|
||||
{
|
||||
if (Face)
|
||||
{
|
||||
FT_Done_Face(Face);
|
||||
Face = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
void FreeTypeFont::SetPixelHeight(int pixel_height)
|
||||
{
|
||||
// Vuhdo: I'm not sure how to deal with font sizes properly. As far as I understand, currently ImGui assumes that the 'pixel_height'
|
||||
// is a maximum height of an any given glyph, i.e. it's the sum of font's ascender and descender. Seems strange to me.
|
||||
// NB: FT_Set_Pixel_Sizes() doesn't seem to get us the same result.
|
||||
FT_Size_RequestRec req;
|
||||
req.type = (UserFlags & ImGuiFreeTypeBuilderFlags_Bitmap) ? FT_SIZE_REQUEST_TYPE_NOMINAL : FT_SIZE_REQUEST_TYPE_REAL_DIM;
|
||||
req.width = 0;
|
||||
req.height = (uint32_t)pixel_height * 64;
|
||||
req.horiResolution = 0;
|
||||
req.vertResolution = 0;
|
||||
FT_Request_Size(Face, &req);
|
||||
|
||||
// Update font info
|
||||
FT_Size_Metrics metrics = Face->size->metrics;
|
||||
Info.PixelHeight = (uint32_t)pixel_height;
|
||||
Info.Ascender = (float)FT_CEIL(metrics.ascender);
|
||||
Info.Descender = (float)FT_CEIL(metrics.descender);
|
||||
Info.LineSpacing = (float)FT_CEIL(metrics.height);
|
||||
Info.LineGap = (float)FT_CEIL(metrics.height - metrics.ascender + metrics.descender);
|
||||
Info.MaxAdvanceWidth = (float)FT_CEIL(metrics.max_advance);
|
||||
}
|
||||
|
||||
const FT_Glyph_Metrics* FreeTypeFont::LoadGlyph(uint32_t codepoint)
|
||||
{
|
||||
uint32_t glyph_index = FT_Get_Char_Index(Face, codepoint);
|
||||
if (glyph_index == 0)
|
||||
return NULL;
|
||||
|
||||
// If this crash for you: FreeType 2.11.0 has a crash bug on some bitmap/colored fonts.
|
||||
// - https://gitlab.freedesktop.org/freetype/freetype/-/issues/1076
|
||||
// - https://github.com/ocornut/imgui/issues/4567
|
||||
// - https://github.com/ocornut/imgui/issues/4566
|
||||
// You can use FreeType 2.10, or the patched version of 2.11.0 in VcPkg, or probably any upcoming FreeType version.
|
||||
FT_Error error = FT_Load_Glyph(Face, glyph_index, LoadFlags);
|
||||
if (error)
|
||||
return NULL;
|
||||
|
||||
// Need an outline for this to work
|
||||
FT_GlyphSlot slot = Face->glyph;
|
||||
IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP);
|
||||
|
||||
// Apply convenience transform (this is not picking from real "Bold"/"Italic" fonts! Merely applying FreeType helper transform. Oblique == Slanting)
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_Bold)
|
||||
FT_GlyphSlot_Embolden(slot);
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_Oblique)
|
||||
{
|
||||
FT_GlyphSlot_Oblique(slot);
|
||||
//FT_BBox bbox;
|
||||
//FT_Outline_Get_BBox(&slot->outline, &bbox);
|
||||
//slot->metrics.width = bbox.xMax - bbox.xMin;
|
||||
//slot->metrics.height = bbox.yMax - bbox.yMin;
|
||||
}
|
||||
|
||||
return &slot->metrics;
|
||||
}
|
||||
|
||||
const FT_Bitmap* FreeTypeFont::RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info)
|
||||
{
|
||||
FT_GlyphSlot slot = Face->glyph;
|
||||
FT_Error error = FT_Render_Glyph(slot, RenderMode);
|
||||
if (error != 0)
|
||||
return NULL;
|
||||
|
||||
FT_Bitmap* ft_bitmap = &Face->glyph->bitmap;
|
||||
out_glyph_info->Width = (int)ft_bitmap->width;
|
||||
out_glyph_info->Height = (int)ft_bitmap->rows;
|
||||
out_glyph_info->OffsetX = Face->glyph->bitmap_left;
|
||||
out_glyph_info->OffsetY = -Face->glyph->bitmap_top;
|
||||
out_glyph_info->AdvanceX = (float)FT_CEIL(slot->advance.x);
|
||||
out_glyph_info->IsColored = (ft_bitmap->pixel_mode == FT_PIXEL_MODE_BGRA);
|
||||
|
||||
return ft_bitmap;
|
||||
}
|
||||
|
||||
void FreeTypeFont::BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch, unsigned char* multiply_table)
|
||||
{
|
||||
IM_ASSERT(ft_bitmap != NULL);
|
||||
const uint32_t w = ft_bitmap->width;
|
||||
const uint32_t h = ft_bitmap->rows;
|
||||
const uint8_t* src = ft_bitmap->buffer;
|
||||
const uint32_t src_pitch = ft_bitmap->pitch;
|
||||
|
||||
switch (ft_bitmap->pixel_mode)
|
||||
{
|
||||
case FT_PIXEL_MODE_GRAY: // Grayscale image, 1 byte per pixel.
|
||||
{
|
||||
if (multiply_table == NULL)
|
||||
{
|
||||
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
|
||||
for (uint32_t x = 0; x < w; x++)
|
||||
dst[x] = IM_COL32(255, 255, 255, src[x]);
|
||||
}
|
||||
else
|
||||
{
|
||||
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
|
||||
for (uint32_t x = 0; x < w; x++)
|
||||
dst[x] = IM_COL32(255, 255, 255, multiply_table[src[x]]);
|
||||
}
|
||||
break;
|
||||
}
|
||||
case FT_PIXEL_MODE_MONO: // Monochrome image, 1 bit per pixel. The bits in each byte are ordered from MSB to LSB.
|
||||
{
|
||||
uint8_t color0 = multiply_table ? multiply_table[0] : 0;
|
||||
uint8_t color1 = multiply_table ? multiply_table[255] : 255;
|
||||
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
|
||||
{
|
||||
uint8_t bits = 0;
|
||||
const uint8_t* bits_ptr = src;
|
||||
for (uint32_t x = 0; x < w; x++, bits <<= 1)
|
||||
{
|
||||
if ((x & 7) == 0)
|
||||
bits = *bits_ptr++;
|
||||
dst[x] = IM_COL32(255, 255, 255, (bits & 0x80) ? color1 : color0);
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
case FT_PIXEL_MODE_BGRA:
|
||||
{
|
||||
// FIXME: Converting pre-multiplied alpha to straight. Doesn't smell good.
|
||||
#define DE_MULTIPLY(color, alpha) (ImU32)(255.0f * (float)color / (float)alpha + 0.5f)
|
||||
if (multiply_table == NULL)
|
||||
{
|
||||
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
|
||||
for (uint32_t x = 0; x < w; x++)
|
||||
{
|
||||
uint8_t r = src[x * 4 + 2], g = src[x * 4 + 1], b = src[x * 4], a = src[x * 4 + 3];
|
||||
dst[x] = IM_COL32(DE_MULTIPLY(r, a), DE_MULTIPLY(g, a), DE_MULTIPLY(b, a), a);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
|
||||
{
|
||||
for (uint32_t x = 0; x < w; x++)
|
||||
{
|
||||
uint8_t r = src[x * 4 + 2], g = src[x * 4 + 1], b = src[x * 4], a = src[x * 4 + 3];
|
||||
dst[x] = IM_COL32(multiply_table[DE_MULTIPLY(r, a)], multiply_table[DE_MULTIPLY(g, a)], multiply_table[DE_MULTIPLY(b, a)], multiply_table[a]);
|
||||
}
|
||||
}
|
||||
}
|
||||
#undef DE_MULTIPLY
|
||||
break;
|
||||
}
|
||||
default:
|
||||
IM_ASSERT(0 && "FreeTypeFont::BlitGlyph(): Unknown bitmap pixel mode!");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#ifndef STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
|
||||
#ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
|
||||
#define STBRP_ASSERT(x) do { IM_ASSERT(x); } while (0)
|
||||
#define STBRP_STATIC
|
||||
#define STB_RECT_PACK_IMPLEMENTATION
|
||||
#endif
|
||||
#ifdef IMGUI_STB_RECT_PACK_FILENAME
|
||||
#include IMGUI_STB_RECT_PACK_FILENAME
|
||||
#else
|
||||
#include "imstb_rectpack.h"
|
||||
#endif
|
||||
#endif
|
||||
|
||||
struct ImFontBuildSrcGlyphFT
|
||||
{
|
||||
GlyphInfo Info;
|
||||
uint32_t Codepoint;
|
||||
unsigned int* BitmapData; // Point within one of the dst_tmp_bitmap_buffers[] array
|
||||
|
||||
ImFontBuildSrcGlyphFT() { memset(this, 0, sizeof(*this)); }
|
||||
};
|
||||
|
||||
struct ImFontBuildSrcDataFT
|
||||
{
|
||||
FreeTypeFont Font;
|
||||
stbrp_rect* Rects; // Rectangle to pack. We first fill in their size and the packer will give us their position.
|
||||
const ImWchar* SrcRanges; // Ranges as requested by user (user is allowed to request too much, e.g. 0x0020..0xFFFF)
|
||||
int DstIndex; // Index into atlas->Fonts[] and dst_tmp_array[]
|
||||
int GlyphsHighest; // Highest requested codepoint
|
||||
int GlyphsCount; // Glyph count (excluding missing glyphs and glyphs already set by an earlier source font)
|
||||
ImBitVector GlyphsSet; // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
|
||||
ImVector<ImFontBuildSrcGlyphFT> GlyphsList;
|
||||
};
|
||||
|
||||
// Temporary data for one destination ImFont* (multiple source fonts can be merged into one destination ImFont)
|
||||
struct ImFontBuildDstDataFT
|
||||
{
|
||||
int SrcCount; // Number of source fonts targeting this destination font.
|
||||
int GlyphsHighest;
|
||||
int GlyphsCount;
|
||||
ImBitVector GlyphsSet; // This is used to resolve collision when multiple sources are merged into a same destination font.
|
||||
};
|
||||
|
||||
bool ImFontAtlasBuildWithFreeTypeEx(FT_Library ft_library, ImFontAtlas* atlas, unsigned int extra_flags)
|
||||
{
|
||||
IM_ASSERT(atlas->ConfigData.Size > 0);
|
||||
|
||||
ImFontAtlasBuildInit(atlas);
|
||||
|
||||
// Clear atlas
|
||||
atlas->TexID = (ImTextureID)NULL;
|
||||
atlas->TexWidth = atlas->TexHeight = 0;
|
||||
atlas->TexUvScale = ImVec2(0.0f, 0.0f);
|
||||
atlas->TexUvWhitePixel = ImVec2(0.0f, 0.0f);
|
||||
atlas->ClearTexData();
|
||||
|
||||
// Temporary storage for building
|
||||
bool src_load_color = false;
|
||||
ImVector<ImFontBuildSrcDataFT> src_tmp_array;
|
||||
ImVector<ImFontBuildDstDataFT> dst_tmp_array;
|
||||
src_tmp_array.resize(atlas->ConfigData.Size);
|
||||
dst_tmp_array.resize(atlas->Fonts.Size);
|
||||
memset((void*)src_tmp_array.Data, 0, (size_t)src_tmp_array.size_in_bytes());
|
||||
memset((void*)dst_tmp_array.Data, 0, (size_t)dst_tmp_array.size_in_bytes());
|
||||
|
||||
// 1. Initialize font loading structure, check font data validity
|
||||
for (int src_i = 0; src_i < atlas->ConfigData.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
ImFontConfig& cfg = atlas->ConfigData[src_i];
|
||||
FreeTypeFont& font_face = src_tmp.Font;
|
||||
IM_ASSERT(cfg.DstFont && (!cfg.DstFont->IsLoaded() || cfg.DstFont->ContainerAtlas == atlas));
|
||||
|
||||
// Find index from cfg.DstFont (we allow the user to set cfg.DstFont. Also it makes casual debugging nicer than when storing indices)
|
||||
src_tmp.DstIndex = -1;
|
||||
for (int output_i = 0; output_i < atlas->Fonts.Size && src_tmp.DstIndex == -1; output_i++)
|
||||
if (cfg.DstFont == atlas->Fonts[output_i])
|
||||
src_tmp.DstIndex = output_i;
|
||||
IM_ASSERT(src_tmp.DstIndex != -1); // cfg.DstFont not pointing within atlas->Fonts[] array?
|
||||
if (src_tmp.DstIndex == -1)
|
||||
return false;
|
||||
|
||||
// Load font
|
||||
if (!font_face.InitFont(ft_library, cfg, extra_flags))
|
||||
return false;
|
||||
|
||||
// Measure highest codepoints
|
||||
src_load_color |= (cfg.FontBuilderFlags & ImGuiFreeTypeBuilderFlags_LoadColor) != 0;
|
||||
ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
|
||||
src_tmp.SrcRanges = cfg.GlyphRanges ? cfg.GlyphRanges : atlas->GetGlyphRangesDefault();
|
||||
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
|
||||
src_tmp.GlyphsHighest = ImMax(src_tmp.GlyphsHighest, (int)src_range[1]);
|
||||
dst_tmp.SrcCount++;
|
||||
dst_tmp.GlyphsHighest = ImMax(dst_tmp.GlyphsHighest, src_tmp.GlyphsHighest);
|
||||
}
|
||||
|
||||
// 2. For every requested codepoint, check for their presence in the font data, and handle redundancy or overlaps between source fonts to avoid unused glyphs.
|
||||
int total_glyphs_count = 0;
|
||||
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
|
||||
src_tmp.GlyphsSet.Create(src_tmp.GlyphsHighest + 1);
|
||||
if (dst_tmp.GlyphsSet.Storage.empty())
|
||||
dst_tmp.GlyphsSet.Create(dst_tmp.GlyphsHighest + 1);
|
||||
|
||||
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
|
||||
for (int codepoint = src_range[0]; codepoint <= (int)src_range[1]; codepoint++)
|
||||
{
|
||||
if (dst_tmp.GlyphsSet.TestBit(codepoint)) // Don't overwrite existing glyphs. We could make this an option (e.g. MergeOverwrite)
|
||||
continue;
|
||||
uint32_t glyph_index = FT_Get_Char_Index(src_tmp.Font.Face, codepoint); // It is actually in the font? (FIXME-OPT: We are not storing the glyph_index..)
|
||||
if (glyph_index == 0)
|
||||
continue;
|
||||
|
||||
// Add to avail set/counters
|
||||
src_tmp.GlyphsCount++;
|
||||
dst_tmp.GlyphsCount++;
|
||||
src_tmp.GlyphsSet.SetBit(codepoint);
|
||||
dst_tmp.GlyphsSet.SetBit(codepoint);
|
||||
total_glyphs_count++;
|
||||
}
|
||||
}
|
||||
|
||||
// 3. Unpack our bit map into a flat list (we now have all the Unicode points that we know are requested _and_ available _and_ not overlapping another)
|
||||
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
src_tmp.GlyphsList.reserve(src_tmp.GlyphsCount);
|
||||
|
||||
IM_ASSERT(sizeof(src_tmp.GlyphsSet.Storage.Data[0]) == sizeof(ImU32));
|
||||
const ImU32* it_begin = src_tmp.GlyphsSet.Storage.begin();
|
||||
const ImU32* it_end = src_tmp.GlyphsSet.Storage.end();
|
||||
for (const ImU32* it = it_begin; it < it_end; it++)
|
||||
if (ImU32 entries_32 = *it)
|
||||
for (ImU32 bit_n = 0; bit_n < 32; bit_n++)
|
||||
if (entries_32 & ((ImU32)1 << bit_n))
|
||||
{
|
||||
ImFontBuildSrcGlyphFT src_glyph;
|
||||
src_glyph.Codepoint = (ImWchar)(((it - it_begin) << 5) + bit_n);
|
||||
//src_glyph.GlyphIndex = 0; // FIXME-OPT: We had this info in the previous step and lost it..
|
||||
src_tmp.GlyphsList.push_back(src_glyph);
|
||||
}
|
||||
src_tmp.GlyphsSet.Clear();
|
||||
IM_ASSERT(src_tmp.GlyphsList.Size == src_tmp.GlyphsCount);
|
||||
}
|
||||
for (int dst_i = 0; dst_i < dst_tmp_array.Size; dst_i++)
|
||||
dst_tmp_array[dst_i].GlyphsSet.Clear();
|
||||
dst_tmp_array.clear();
|
||||
|
||||
// Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0)
|
||||
// (We technically don't need to zero-clear buf_rects, but let's do it for the sake of sanity)
|
||||
ImVector<stbrp_rect> buf_rects;
|
||||
buf_rects.resize(total_glyphs_count);
|
||||
memset(buf_rects.Data, 0, (size_t)buf_rects.size_in_bytes());
|
||||
|
||||
// Allocate temporary rasterization data buffers.
|
||||
// We could not find a way to retrieve accurate glyph size without rendering them.
|
||||
// (e.g. slot->metrics->width not always matching bitmap->width, especially considering the Oblique transform)
|
||||
// We allocate in chunks of 256 KB to not waste too much extra memory ahead. Hopefully users of FreeType won't find the temporary allocations.
|
||||
const int BITMAP_BUFFERS_CHUNK_SIZE = 256 * 1024;
|
||||
int buf_bitmap_current_used_bytes = 0;
|
||||
ImVector<unsigned char*> buf_bitmap_buffers;
|
||||
buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
|
||||
|
||||
// 4. Gather glyphs sizes so we can pack them in our virtual canvas.
|
||||
// 8. Render/rasterize font characters into the texture
|
||||
int total_surface = 0;
|
||||
int buf_rects_out_n = 0;
|
||||
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
ImFontConfig& cfg = atlas->ConfigData[src_i];
|
||||
if (src_tmp.GlyphsCount == 0)
|
||||
continue;
|
||||
|
||||
src_tmp.Rects = &buf_rects[buf_rects_out_n];
|
||||
buf_rects_out_n += src_tmp.GlyphsCount;
|
||||
|
||||
// Compute multiply table if requested
|
||||
const bool multiply_enabled = (cfg.RasterizerMultiply != 1.0f);
|
||||
unsigned char multiply_table[256];
|
||||
if (multiply_enabled)
|
||||
ImFontAtlasBuildMultiplyCalcLookupTable(multiply_table, cfg.RasterizerMultiply);
|
||||
|
||||
// Gather the sizes of all rectangles we will need to pack
|
||||
const int padding = atlas->TexGlyphPadding;
|
||||
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsList.Size; glyph_i++)
|
||||
{
|
||||
ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
|
||||
|
||||
const FT_Glyph_Metrics* metrics = src_tmp.Font.LoadGlyph(src_glyph.Codepoint);
|
||||
if (metrics == NULL)
|
||||
continue;
|
||||
|
||||
// Render glyph into a bitmap (currently held by FreeType)
|
||||
const FT_Bitmap* ft_bitmap = src_tmp.Font.RenderGlyphAndGetInfo(&src_glyph.Info);
|
||||
if (ft_bitmap == NULL)
|
||||
continue;
|
||||
|
||||
// Allocate new temporary chunk if needed
|
||||
const int bitmap_size_in_bytes = src_glyph.Info.Width * src_glyph.Info.Height * 4;
|
||||
if (buf_bitmap_current_used_bytes + bitmap_size_in_bytes > BITMAP_BUFFERS_CHUNK_SIZE)
|
||||
{
|
||||
buf_bitmap_current_used_bytes = 0;
|
||||
buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
|
||||
}
|
||||
|
||||
// Blit rasterized pixels to our temporary buffer and keep a pointer to it.
|
||||
src_glyph.BitmapData = (unsigned int*)(buf_bitmap_buffers.back() + buf_bitmap_current_used_bytes);
|
||||
buf_bitmap_current_used_bytes += bitmap_size_in_bytes;
|
||||
src_tmp.Font.BlitGlyph(ft_bitmap, src_glyph.BitmapData, src_glyph.Info.Width, multiply_enabled ? multiply_table : NULL);
|
||||
|
||||
src_tmp.Rects[glyph_i].w = (stbrp_coord)(src_glyph.Info.Width + padding);
|
||||
src_tmp.Rects[glyph_i].h = (stbrp_coord)(src_glyph.Info.Height + padding);
|
||||
total_surface += src_tmp.Rects[glyph_i].w * src_tmp.Rects[glyph_i].h;
|
||||
}
|
||||
}
|
||||
|
||||
// We need a width for the skyline algorithm, any width!
|
||||
// The exact width doesn't really matter much, but some API/GPU have texture size limitations and increasing width can decrease height.
|
||||
// User can override TexDesiredWidth and TexGlyphPadding if they wish, otherwise we use a simple heuristic to select the width based on expected surface.
|
||||
const int surface_sqrt = (int)ImSqrt((float)total_surface) + 1;
|
||||
atlas->TexHeight = 0;
|
||||
if (atlas->TexDesiredWidth > 0)
|
||||
atlas->TexWidth = atlas->TexDesiredWidth;
|
||||
else
|
||||
atlas->TexWidth = (surface_sqrt >= 4096 * 0.7f) ? 4096 : (surface_sqrt >= 2048 * 0.7f) ? 2048 : (surface_sqrt >= 1024 * 0.7f) ? 1024 : 512;
|
||||
|
||||
// 5. Start packing
|
||||
// Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values).
|
||||
const int TEX_HEIGHT_MAX = 1024 * 32;
|
||||
const int num_nodes_for_packing_algorithm = atlas->TexWidth - atlas->TexGlyphPadding;
|
||||
ImVector<stbrp_node> pack_nodes;
|
||||
pack_nodes.resize(num_nodes_for_packing_algorithm);
|
||||
stbrp_context pack_context;
|
||||
stbrp_init_target(&pack_context, atlas->TexWidth, TEX_HEIGHT_MAX, pack_nodes.Data, pack_nodes.Size);
|
||||
ImFontAtlasBuildPackCustomRects(atlas, &pack_context);
|
||||
|
||||
// 6. Pack each source font. No rendering yet, we are working with rectangles in an infinitely tall texture at this point.
|
||||
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
if (src_tmp.GlyphsCount == 0)
|
||||
continue;
|
||||
|
||||
stbrp_pack_rects(&pack_context, src_tmp.Rects, src_tmp.GlyphsCount);
|
||||
|
||||
// Extend texture height and mark missing glyphs as non-packed so we won't render them.
|
||||
// FIXME: We are not handling packing failure here (would happen if we got off TEX_HEIGHT_MAX or if a single if larger than TexWidth?)
|
||||
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
|
||||
if (src_tmp.Rects[glyph_i].was_packed)
|
||||
atlas->TexHeight = ImMax(atlas->TexHeight, src_tmp.Rects[glyph_i].y + src_tmp.Rects[glyph_i].h);
|
||||
}
|
||||
|
||||
// 7. Allocate texture
|
||||
atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);
|
||||
atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
|
||||
if (src_load_color)
|
||||
{
|
||||
size_t tex_size = (size_t)atlas->TexWidth * atlas->TexHeight * 4;
|
||||
atlas->TexPixelsRGBA32 = (unsigned int*)IM_ALLOC(tex_size);
|
||||
memset(atlas->TexPixelsRGBA32, 0, tex_size);
|
||||
}
|
||||
else
|
||||
{
|
||||
size_t tex_size = (size_t)atlas->TexWidth * atlas->TexHeight * 1;
|
||||
atlas->TexPixelsAlpha8 = (unsigned char*)IM_ALLOC(tex_size);
|
||||
memset(atlas->TexPixelsAlpha8, 0, tex_size);
|
||||
}
|
||||
|
||||
// 8. Copy rasterized font characters back into the main texture
|
||||
// 9. Setup ImFont and glyphs for runtime
|
||||
bool tex_use_colors = false;
|
||||
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
if (src_tmp.GlyphsCount == 0)
|
||||
continue;
|
||||
|
||||
// When merging fonts with MergeMode=true:
|
||||
// - We can have multiple input fonts writing into a same destination font.
|
||||
// - dst_font->ConfigData is != from cfg which is our source configuration.
|
||||
ImFontConfig& cfg = atlas->ConfigData[src_i];
|
||||
ImFont* dst_font = cfg.DstFont;
|
||||
|
||||
const float ascent = src_tmp.Font.Info.Ascender;
|
||||
const float descent = src_tmp.Font.Info.Descender;
|
||||
ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);
|
||||
const float font_off_x = cfg.GlyphOffset.x;
|
||||
const float font_off_y = cfg.GlyphOffset.y + IM_ROUND(dst_font->Ascent);
|
||||
|
||||
const int padding = atlas->TexGlyphPadding;
|
||||
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
|
||||
{
|
||||
ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
|
||||
stbrp_rect& pack_rect = src_tmp.Rects[glyph_i];
|
||||
IM_ASSERT(pack_rect.was_packed);
|
||||
if (pack_rect.w == 0 && pack_rect.h == 0)
|
||||
continue;
|
||||
|
||||
GlyphInfo& info = src_glyph.Info;
|
||||
IM_ASSERT(info.Width + padding <= pack_rect.w);
|
||||
IM_ASSERT(info.Height + padding <= pack_rect.h);
|
||||
const int tx = pack_rect.x + padding;
|
||||
const int ty = pack_rect.y + padding;
|
||||
|
||||
// Register glyph
|
||||
float x0 = info.OffsetX + font_off_x;
|
||||
float y0 = info.OffsetY + font_off_y;
|
||||
float x1 = x0 + info.Width;
|
||||
float y1 = y0 + info.Height;
|
||||
float u0 = (tx) / (float)atlas->TexWidth;
|
||||
float v0 = (ty) / (float)atlas->TexHeight;
|
||||
float u1 = (tx + info.Width) / (float)atlas->TexWidth;
|
||||
float v1 = (ty + info.Height) / (float)atlas->TexHeight;
|
||||
dst_font->AddGlyph(&cfg, (ImWchar)src_glyph.Codepoint, x0, y0, x1, y1, u0, v0, u1, v1, info.AdvanceX);
|
||||
|
||||
ImFontGlyph* dst_glyph = &dst_font->Glyphs.back();
|
||||
IM_ASSERT(dst_glyph->Codepoint == src_glyph.Codepoint);
|
||||
if (src_glyph.Info.IsColored)
|
||||
dst_glyph->Colored = tex_use_colors = true;
|
||||
|
||||
// Blit from temporary buffer to final texture
|
||||
size_t blit_src_stride = (size_t)src_glyph.Info.Width;
|
||||
size_t blit_dst_stride = (size_t)atlas->TexWidth;
|
||||
unsigned int* blit_src = src_glyph.BitmapData;
|
||||
if (atlas->TexPixelsAlpha8 != NULL)
|
||||
{
|
||||
unsigned char* blit_dst = atlas->TexPixelsAlpha8 + (ty * blit_dst_stride) + tx;
|
||||
for (int y = 0; y < info.Height; y++, blit_dst += blit_dst_stride, blit_src += blit_src_stride)
|
||||
for (int x = 0; x < info.Width; x++)
|
||||
blit_dst[x] = (unsigned char)((blit_src[x] >> IM_COL32_A_SHIFT) & 0xFF);
|
||||
}
|
||||
else
|
||||
{
|
||||
unsigned int* blit_dst = atlas->TexPixelsRGBA32 + (ty * blit_dst_stride) + tx;
|
||||
for (int y = 0; y < info.Height; y++, blit_dst += blit_dst_stride, blit_src += blit_src_stride)
|
||||
for (int x = 0; x < info.Width; x++)
|
||||
blit_dst[x] = blit_src[x];
|
||||
}
|
||||
}
|
||||
|
||||
src_tmp.Rects = NULL;
|
||||
}
|
||||
atlas->TexPixelsUseColors = tex_use_colors;
|
||||
|
||||
// Cleanup
|
||||
for (int buf_i = 0; buf_i < buf_bitmap_buffers.Size; buf_i++)
|
||||
IM_FREE(buf_bitmap_buffers[buf_i]);
|
||||
src_tmp_array.clear_destruct();
|
||||
|
||||
ImFontAtlasBuildFinish(atlas);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
// FreeType memory allocation callbacks
|
||||
static void* FreeType_Alloc(FT_Memory /*memory*/, long size)
|
||||
{
|
||||
return GImGuiFreeTypeAllocFunc((size_t)size, GImGuiFreeTypeAllocatorUserData);
|
||||
}
|
||||
|
||||
static void FreeType_Free(FT_Memory /*memory*/, void* block)
|
||||
{
|
||||
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
|
||||
}
|
||||
|
||||
static void* FreeType_Realloc(FT_Memory /*memory*/, long cur_size, long new_size, void* block)
|
||||
{
|
||||
// Implement realloc() as we don't ask user to provide it.
|
||||
if (block == NULL)
|
||||
return GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
|
||||
|
||||
if (new_size == 0)
|
||||
{
|
||||
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (new_size > cur_size)
|
||||
{
|
||||
void* new_block = GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
|
||||
memcpy(new_block, block, (size_t)cur_size);
|
||||
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
|
||||
return new_block;
|
||||
}
|
||||
|
||||
return block;
|
||||
}
|
||||
|
||||
static bool ImFontAtlasBuildWithFreeType(ImFontAtlas* atlas)
|
||||
{
|
||||
// FreeType memory management: https://www.freetype.org/freetype2/docs/design/design-4.html
|
||||
FT_MemoryRec_ memory_rec = {};
|
||||
memory_rec.user = NULL;
|
||||
memory_rec.alloc = &FreeType_Alloc;
|
||||
memory_rec.free = &FreeType_Free;
|
||||
memory_rec.realloc = &FreeType_Realloc;
|
||||
|
||||
// https://www.freetype.org/freetype2/docs/reference/ft2-module_management.html#FT_New_Library
|
||||
FT_Library ft_library;
|
||||
FT_Error error = FT_New_Library(&memory_rec, &ft_library);
|
||||
if (error != 0)
|
||||
return false;
|
||||
|
||||
// If you don't call FT_Add_Default_Modules() the rest of code may work, but FreeType won't use our custom allocator.
|
||||
FT_Add_Default_Modules(ft_library);
|
||||
|
||||
bool ret = ImFontAtlasBuildWithFreeTypeEx(ft_library, atlas, atlas->FontBuilderFlags);
|
||||
FT_Done_Library(ft_library);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
const ImFontBuilderIO* ImGuiFreeType::GetBuilderForFreeType()
|
||||
{
|
||||
static ImFontBuilderIO io;
|
||||
io.FontBuilder_Build = ImFontAtlasBuildWithFreeType;
|
||||
return &io;
|
||||
}
|
||||
|
||||
void ImGuiFreeType::SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data)
|
||||
{
|
||||
GImGuiFreeTypeAllocFunc = alloc_func;
|
||||
GImGuiFreeTypeFreeFunc = free_func;
|
||||
GImGuiFreeTypeAllocatorUserData = user_data;
|
||||
}
|
||||
@ -1,50 +0,0 @@
|
||||
// dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
|
||||
// (headers)
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "imgui.h" // IMGUI_API
|
||||
|
||||
// Forward declarations
|
||||
struct ImFontAtlas;
|
||||
struct ImFontBuilderIO;
|
||||
|
||||
// Hinting greatly impacts visuals (and glyph sizes).
|
||||
// - By default, hinting is enabled and the font's native hinter is preferred over the auto-hinter.
|
||||
// - When disabled, FreeType generates blurrier glyphs, more or less matches the stb_truetype.h
|
||||
// - The Default hinting mode usually looks good, but may distort glyphs in an unusual way.
|
||||
// - The Light hinting mode generates fuzzier glyphs but better matches Microsoft's rasterizer.
|
||||
// You can set those flags globaly in ImFontAtlas::FontBuilderFlags
|
||||
// You can set those flags on a per font basis in ImFontConfig::FontBuilderFlags
|
||||
enum ImGuiFreeTypeBuilderFlags
|
||||
{
|
||||
ImGuiFreeTypeBuilderFlags_NoHinting = 1 << 0, // Disable hinting. This generally generates 'blurrier' bitmap glyphs when the glyph are rendered in any of the anti-aliased modes.
|
||||
ImGuiFreeTypeBuilderFlags_NoAutoHint = 1 << 1, // Disable auto-hinter.
|
||||
ImGuiFreeTypeBuilderFlags_ForceAutoHint = 1 << 2, // Indicates that the auto-hinter is preferred over the font's native hinter.
|
||||
ImGuiFreeTypeBuilderFlags_LightHinting = 1 << 3, // A lighter hinting algorithm for gray-level modes. Many generated glyphs are fuzzier but better resemble their original shape. This is achieved by snapping glyphs to the pixel grid only vertically (Y-axis), as is done by Microsoft's ClearType and Adobe's proprietary font renderer. This preserves inter-glyph spacing in horizontal text.
|
||||
ImGuiFreeTypeBuilderFlags_MonoHinting = 1 << 4, // Strong hinting algorithm that should only be used for monochrome output.
|
||||
ImGuiFreeTypeBuilderFlags_Bold = 1 << 5, // Styling: Should we artificially embolden the font?
|
||||
ImGuiFreeTypeBuilderFlags_Oblique = 1 << 6, // Styling: Should we slant the font, emulating italic style?
|
||||
ImGuiFreeTypeBuilderFlags_Monochrome = 1 << 7, // Disable anti-aliasing. Combine this with MonoHinting for best results!
|
||||
ImGuiFreeTypeBuilderFlags_LoadColor = 1 << 8, // Enable FreeType color-layered glyphs
|
||||
ImGuiFreeTypeBuilderFlags_Bitmap = 1 << 9 // Enable FreeType bitmap glyphs
|
||||
};
|
||||
|
||||
namespace ImGuiFreeType
|
||||
{
|
||||
// This is automatically assigned when using '#define IMGUI_ENABLE_FREETYPE'.
|
||||
// If you need to dynamically select between multiple builders:
|
||||
// - you can manually assign this builder with 'atlas->FontBuilderIO = ImGuiFreeType::GetBuilderForFreeType()'
|
||||
// - prefer deep-copying this into your own ImFontBuilderIO instance if you use hot-reloading that messes up static data.
|
||||
IMGUI_API const ImFontBuilderIO* GetBuilderForFreeType();
|
||||
|
||||
// Override allocators. By default ImGuiFreeType will use IM_ALLOC()/IM_FREE()
|
||||
// However, as FreeType does lots of allocations we provide a way for the user to redirect it to a separate memory heap if desired.
|
||||
IMGUI_API void SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data = NULL);
|
||||
|
||||
// Obsolete names (will be removed soon)
|
||||
// Prefer using '#define IMGUI_ENABLE_FREETYPE'
|
||||
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
|
||||
static inline bool BuildFontAtlas(ImFontAtlas* atlas, unsigned int flags = 0) { atlas->FontBuilderIO = GetBuilderForFreeType(); atlas->FontBuilderFlags = flags; return atlas->Build(); }
|
||||
#endif
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user