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Diffstat (limited to 'lib/imgui-1.90.7/misc')
19 files changed, 1721 insertions, 0 deletions
diff --git a/lib/imgui-1.90.7/misc/README.txt b/lib/imgui-1.90.7/misc/README.txt new file mode 100644 index 0000000..b4ce89f --- /dev/null +++ b/lib/imgui-1.90.7/misc/README.txt @@ -0,0 +1,23 @@ + +misc/cpp/ + InputText() wrappers for C++ standard library (STL) type: std::string. + This is also an example of how you may wrap your own similar types. + +misc/debuggers/ + Helper files for popular debuggers. + With the .natvis file, types like ImVector<> will be displayed nicely in Visual Studio debugger. + +misc/fonts/ + Fonts loading/merging instructions (e.g. How to handle glyph ranges, how to merge icons fonts). + Command line tool "binary_to_compressed_c" to create compressed arrays to embed data in source code. + Suggested fonts and links. + +misc/freetype/ + Font atlas builder/rasterizer using FreeType instead of stb_truetype. + Benefit from better FreeType rasterization, in particular for small fonts. + +misc/single_file/ + Single-file header stub. + We use this to validate compiling all *.cpp files in a same compilation unit. + Users of that technique (also called "Unity builds") can generally provide this themselves, + so we don't really recommend you use this in your projects. diff --git a/lib/imgui-1.90.7/misc/cpp/README.txt b/lib/imgui-1.90.7/misc/cpp/README.txt new file mode 100644 index 0000000..17f0a3c --- /dev/null +++ b/lib/imgui-1.90.7/misc/cpp/README.txt @@ -0,0 +1,13 @@ + +imgui_stdlib.h + imgui_stdlib.cpp + InputText() wrappers for C++ standard library (STL) type: std::string. + This is also an example of how you may wrap your own similar types. + +imgui_scoped.h + [Experimental, not currently in main repository] + Additional header file with some RAII-style wrappers for common Dear ImGui functions. + Try by merging: https://github.com/ocornut/imgui/pull/2197 + Discuss at: https://github.com/ocornut/imgui/issues/2096 + +See more C++ related extension (fmt, RAII, syntaxis sugar) on Wiki: + https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness diff --git a/lib/imgui-1.90.7/misc/cpp/imgui_stdlib.cpp b/lib/imgui-1.90.7/misc/cpp/imgui_stdlib.cpp new file mode 100644 index 0000000..cf69aa8 --- /dev/null +++ b/lib/imgui-1.90.7/misc/cpp/imgui_stdlib.cpp @@ -0,0 +1,85 @@ +// dear imgui: wrappers for C++ standard library (STL) types (std::string, etc.) +// This is also an example of how you may wrap your own similar types. + +// Changelog: +// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string + +// See more C++ related extension (fmt, RAII, syntaxis sugar) on Wiki: +// https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness + +#include "imgui.h" +#include "imgui_stdlib.h" + +// Clang warnings with -Weverything +#if defined(__clang__) +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness +#endif + +struct InputTextCallback_UserData +{ + std::string* Str; + ImGuiInputTextCallback ChainCallback; + void* ChainCallbackUserData; +}; + +static int InputTextCallback(ImGuiInputTextCallbackData* data) +{ + InputTextCallback_UserData* user_data = (InputTextCallback_UserData*)data->UserData; + if (data->EventFlag == ImGuiInputTextFlags_CallbackResize) + { + // Resize string callback + // If for some reason we refuse the new length (BufTextLen) and/or capacity (BufSize) we need to set them back to what we want. + std::string* str = user_data->Str; + IM_ASSERT(data->Buf == str->c_str()); + str->resize(data->BufTextLen); + data->Buf = (char*)str->c_str(); + } + else if (user_data->ChainCallback) + { + // Forward to user callback, if any + data->UserData = user_data->ChainCallbackUserData; + return user_data->ChainCallback(data); + } + return 0; +} + +bool ImGui::InputText(const char* label, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data) +{ + IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0); + flags |= ImGuiInputTextFlags_CallbackResize; + + InputTextCallback_UserData cb_user_data; + cb_user_data.Str = str; + cb_user_data.ChainCallback = callback; + cb_user_data.ChainCallbackUserData = user_data; + return InputText(label, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data); +} + +bool ImGui::InputTextMultiline(const char* label, std::string* str, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data) +{ + IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0); + flags |= ImGuiInputTextFlags_CallbackResize; + + InputTextCallback_UserData cb_user_data; + cb_user_data.Str = str; + cb_user_data.ChainCallback = callback; + cb_user_data.ChainCallbackUserData = user_data; + return InputTextMultiline(label, (char*)str->c_str(), str->capacity() + 1, size, flags, InputTextCallback, &cb_user_data); +} + +bool ImGui::InputTextWithHint(const char* label, const char* hint, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data) +{ + IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0); + flags |= ImGuiInputTextFlags_CallbackResize; + + InputTextCallback_UserData cb_user_data; + cb_user_data.Str = str; + cb_user_data.ChainCallback = callback; + cb_user_data.ChainCallbackUserData = user_data; + return InputTextWithHint(label, hint, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data); +} + +#if defined(__clang__) +#pragma clang diagnostic pop +#endif diff --git a/lib/imgui-1.90.7/misc/cpp/imgui_stdlib.h b/lib/imgui-1.90.7/misc/cpp/imgui_stdlib.h new file mode 100644 index 0000000..835a808 --- /dev/null +++ b/lib/imgui-1.90.7/misc/cpp/imgui_stdlib.h @@ -0,0 +1,21 @@ +// dear imgui: wrappers for C++ standard library (STL) types (std::string, etc.) +// This is also an example of how you may wrap your own similar types. + +// Changelog: +// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string + +// See more C++ related extension (fmt, RAII, syntaxis sugar) on Wiki: +// https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness + +#pragma once + +#include <string> + +namespace ImGui +{ + // ImGui::InputText() with std::string + // Because text input needs dynamic resizing, we need to setup a callback to grow the capacity + IMGUI_API bool InputText(const char* label, std::string* str, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr); + IMGUI_API bool InputTextMultiline(const char* label, std::string* str, const ImVec2& size = ImVec2(0, 0), ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr); + IMGUI_API bool InputTextWithHint(const char* label, const char* hint, std::string* str, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr); +} diff --git a/lib/imgui-1.90.7/misc/debuggers/README.txt b/lib/imgui-1.90.7/misc/debuggers/README.txt new file mode 100644 index 0000000..3f4ba83 --- /dev/null +++ b/lib/imgui-1.90.7/misc/debuggers/README.txt @@ -0,0 +1,16 @@ + +HELPER FILES FOR POPULAR DEBUGGERS + +imgui.gdb + GDB: disable stepping into trivial functions. + (read comments inside file for details) + +imgui.natstepfilter + Visual Studio Debugger: disable stepping into trivial functions. + (read comments inside file for details) + +imgui.natvis + Visual Studio Debugger: describe Dear ImGui types for better display. + With this, types like ImVector<> will be displayed nicely in the debugger. + (read comments inside file for details) + diff --git a/lib/imgui-1.90.7/misc/debuggers/imgui.gdb b/lib/imgui-1.90.7/misc/debuggers/imgui.gdb new file mode 100644 index 0000000..000ff6e --- /dev/null +++ b/lib/imgui-1.90.7/misc/debuggers/imgui.gdb @@ -0,0 +1,12 @@ +# GDB configuration to aid debugging experience + +# To enable these customizations edit $HOME/.gdbinit (or ./.gdbinit if local gdbinit is enabled) and add: +# add-auto-load-safe-path /path/to/imgui.gdb +# source /path/to/imgui.gdb +# +# More Information at: +# * https://sourceware.org/gdb/current/onlinedocs/gdb/gdbinit-man.html +# * https://sourceware.org/gdb/current/onlinedocs/gdb/Init-File-in-the-Current-Directory.html#Init-File-in-the-Current-Directory + +# Disable stepping into trivial functions +skip -rfunction Im(Vec2|Vec4|Strv|Vector|Span)::.+ diff --git a/lib/imgui-1.90.7/misc/debuggers/imgui.natstepfilter b/lib/imgui-1.90.7/misc/debuggers/imgui.natstepfilter new file mode 100644 index 0000000..6825c93 --- /dev/null +++ b/lib/imgui-1.90.7/misc/debuggers/imgui.natstepfilter @@ -0,0 +1,31 @@ +<?xml version="1.0" encoding="utf-8"?> +<!-- +.natstepfilter file for Visual Studio debugger. +Purpose: instruct debugger to skip some functions when using StepInto (F11) + +Since Visual Studio 2022 version 17.6 Preview 2 (currently available as a "Preview" build on March 14, 2023) +It is possible to add the .natstepfilter file to your project file and it will automatically be used. +(https://developercommunity.visualstudio.com/t/allow-natstepfilter-and-natjmc-to-be-included-as-p/561718) + +For older Visual Studio version prior to 2022 17.6 Preview 2: +* copy in %USERPROFILE%\Documents\Visual Studio XXXX\Visualizers (current user) +* or copy in %VsInstallDirectory%\Common7\Packages\Debugger\Visualizers (all users) +If you have multiple VS version installed, the version that matters is the one you are using the IDE/debugger +of (not the compiling toolset). This is supported since Visual Studio 2012. + +More information at: https://docs.microsoft.com/en-us/visualstudio/debugger/just-my-code?view=vs-2019#BKMK_C___Just_My_Code +--> + +<StepFilter xmlns="http://schemas.microsoft.com/vstudio/debugger/natstepfilter/2010"> + + <!-- Disable stepping into trivial functions --> + <Function> + <Name>(ImVec2|ImVec4|ImStrv)::.+</Name> + <Action>NoStepInto</Action> + </Function> + <Function> + <Name>(ImVector|ImSpan).*::operator.+</Name> + <Action>NoStepInto</Action> + </Function> + +</StepFilter> diff --git a/lib/imgui-1.90.7/misc/debuggers/imgui.natvis b/lib/imgui-1.90.7/misc/debuggers/imgui.natvis new file mode 100644 index 0000000..13b6360 --- /dev/null +++ b/lib/imgui-1.90.7/misc/debuggers/imgui.natvis @@ -0,0 +1,58 @@ +<?xml version="1.0" encoding="utf-8"?> +<!-- +.natvis file for Visual Studio debugger. +Purpose: provide nicer views on data types used by Dear ImGui. + +To enable: +* include file in your VS project (most recommended: not intrusive and always kept up to date!) +* or copy in %USERPROFILE%\Documents\Visual Studio XXXX\Visualizers (current user) +* or copy in %VsInstallDirectory%\Common7\Packages\Debugger\Visualizers (all users) + +More information at: https://docs.microsoft.com/en-us/visualstudio/debugger/create-custom-views-of-native-objects?view=vs-2019 +--> + +<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010"> + +<Type Name="ImVector<*>"> + <DisplayString>{{Size={Size} Capacity={Capacity}}}</DisplayString> + <Expand> + <ArrayItems> + <Size>Size</Size> + <ValuePointer>Data</ValuePointer> + </ArrayItems> + </Expand> +</Type> + +<Type Name="ImSpan<*>"> + <DisplayString>{{Size={DataEnd-Data} }}</DisplayString> + <Expand> + <ArrayItems> + <Size>DataEnd-Data</Size> + <ValuePointer>Data</ValuePointer> + </ArrayItems> + </Expand> +</Type> + +<Type Name="ImVec2"> + <DisplayString>{{x={x,g} y={y,g}}}</DisplayString> +</Type> + +<Type Name="ImVec4"> + <DisplayString>{{x={x,g} y={y,g} z={z,g} w={w,g}}}</DisplayString> +</Type> + +<Type Name="ImRect"> + <DisplayString>{{Min=({Min.x,g} {Min.y,g}) Max=({Max.x,g} {Max.y,g}) Size=({Max.x-Min.x,g} {Max.y-Min.y,g})}}</DisplayString> + <Expand> + <Item Name="Min">Min</Item> + <Item Name="Max">Max</Item> + <Item Name="[Width]">Max.x - Min.x</Item> + <Item Name="[Height]">Max.y - Min.y</Item> + </Expand> +</Type> + +<Type Name="ImGuiWindow"> + <DisplayString>{{Name {Name,s} Active {(Active||WasActive)?1:0,d} Child {(Flags & 0x01000000)?1:0,d} Popup {(Flags & 0x04000000)?1:0,d} Hidden {(Hidden)?1:0,d}}</DisplayString> +</Type> + +</AutoVisualizer> diff --git a/lib/imgui-1.90.7/misc/fonts/Cousine-Regular.ttf b/lib/imgui-1.90.7/misc/fonts/Cousine-Regular.ttf Binary files differnew file mode 100644 index 0000000..70a0bf9 --- /dev/null +++ b/lib/imgui-1.90.7/misc/fonts/Cousine-Regular.ttf diff --git a/lib/imgui-1.90.7/misc/fonts/DroidSans.ttf b/lib/imgui-1.90.7/misc/fonts/DroidSans.ttf Binary files differnew file mode 100644 index 0000000..767c63a --- /dev/null +++ b/lib/imgui-1.90.7/misc/fonts/DroidSans.ttf diff --git a/lib/imgui-1.90.7/misc/fonts/Karla-Regular.ttf b/lib/imgui-1.90.7/misc/fonts/Karla-Regular.ttf Binary files differnew file mode 100644 index 0000000..81b3de6 --- /dev/null +++ b/lib/imgui-1.90.7/misc/fonts/Karla-Regular.ttf diff --git a/lib/imgui-1.90.7/misc/fonts/ProggyClean.ttf b/lib/imgui-1.90.7/misc/fonts/ProggyClean.ttf Binary files differnew file mode 100644 index 0000000..0270cdf --- /dev/null +++ b/lib/imgui-1.90.7/misc/fonts/ProggyClean.ttf diff --git a/lib/imgui-1.90.7/misc/fonts/ProggyTiny.ttf b/lib/imgui-1.90.7/misc/fonts/ProggyTiny.ttf Binary files differnew file mode 100644 index 0000000..1c4312c --- /dev/null +++ b/lib/imgui-1.90.7/misc/fonts/ProggyTiny.ttf diff --git a/lib/imgui-1.90.7/misc/fonts/Roboto-Medium.ttf b/lib/imgui-1.90.7/misc/fonts/Roboto-Medium.ttf Binary files differnew file mode 100644 index 0000000..39c63d7 --- /dev/null +++ b/lib/imgui-1.90.7/misc/fonts/Roboto-Medium.ttf diff --git a/lib/imgui-1.90.7/misc/fonts/binary_to_compressed_c.cpp b/lib/imgui-1.90.7/misc/fonts/binary_to_compressed_c.cpp new file mode 100644 index 0000000..f41d20f --- /dev/null +++ b/lib/imgui-1.90.7/misc/fonts/binary_to_compressed_c.cpp @@ -0,0 +1,388 @@ +// dear imgui +// (binary_to_compressed_c.cpp) +// Helper tool to turn a file into a C array, if you want to embed font data in your source code. + +// The data is first compressed with stb_compress() to reduce source code size, +// then encoded in Base85 to fit in a string so we can fit roughly 4 bytes of compressed data into 5 bytes of source code (suggested by @mmalex) +// (If we used 32-bit constants it would require take 11 bytes of source code to encode 4 bytes, and be endianness dependent) +// Note that even with compression, the output array is likely to be bigger than the binary file.. +// Load compressed TTF fonts with ImGui::GetIO().Fonts->AddFontFromMemoryCompressedTTF() + +// Build with, e.g: +// # cl.exe binary_to_compressed_c.cpp +// # g++ binary_to_compressed_c.cpp +// # clang++ binary_to_compressed_c.cpp +// You can also find a precompiled Windows binary in the binary/demo package available from https://github.com/ocornut/imgui + +// Usage: +// binary_to_compressed_c.exe [-base85] [-nocompress] [-nostatic] <inputfile> <symbolname> +// Usage example: +// # binary_to_compressed_c.exe myfont.ttf MyFont > myfont.cpp +// # binary_to_compressed_c.exe -base85 myfont.ttf MyFont > myfont.cpp + +#define _CRT_SECURE_NO_WARNINGS +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <assert.h> + +// stb_compress* from stb.h - declaration +typedef unsigned int stb_uint; +typedef unsigned char stb_uchar; +stb_uint stb_compress(stb_uchar* out, stb_uchar* in, stb_uint len); + +static bool binary_to_compressed_c(const char* filename, const char* symbol, bool use_base85_encoding, bool use_compression, bool use_static); + +int main(int argc, char** argv) +{ + if (argc < 3) + { + printf("Syntax: %s [-base85] [-nocompress] [-nostatic] <inputfile> <symbolname>\n", argv[0]); + return 0; + } + + int argn = 1; + bool use_base85_encoding = false; + bool use_compression = true; + bool use_static = true; + while (argn < (argc - 2) && argv[argn][0] == '-') + { + if (strcmp(argv[argn], "-base85") == 0) { use_base85_encoding = true; argn++; } + else if (strcmp(argv[argn], "-nocompress") == 0) { use_compression = false; argn++; } + else if (strcmp(argv[argn], "-nostatic") == 0) { use_static = false; argn++; } + else + { + fprintf(stderr, "Unknown argument: '%s'\n", argv[argn]); + return 1; + } + } + + bool ret = binary_to_compressed_c(argv[argn], argv[argn + 1], use_base85_encoding, use_compression, use_static); + if (!ret) + fprintf(stderr, "Error opening or reading file: '%s'\n", argv[argn]); + return ret ? 0 : 1; +} + +char Encode85Byte(unsigned int x) +{ + x = (x % 85) + 35; + return (char)((x >= '\\') ? x + 1 : x); +} + +bool binary_to_compressed_c(const char* filename, const char* symbol, bool use_base85_encoding, bool use_compression, bool use_static) +{ + // Read file + FILE* f = fopen(filename, "rb"); + if (!f) return false; + int data_sz; + if (fseek(f, 0, SEEK_END) || (data_sz = (int)ftell(f)) == -1 || fseek(f, 0, SEEK_SET)) { fclose(f); return false; } + char* data = new char[data_sz + 4]; + if (fread(data, 1, data_sz, f) != (size_t)data_sz) { fclose(f); delete[] data; return false; } + memset((void*)(((char*)data) + data_sz), 0, 4); + fclose(f); + + // Compress + int maxlen = data_sz + 512 + (data_sz >> 2) + sizeof(int); // total guess + char* compressed = use_compression ? new char[maxlen] : data; + int compressed_sz = use_compression ? stb_compress((stb_uchar*)compressed, (stb_uchar*)data, data_sz) : data_sz; + if (use_compression) + memset(compressed + compressed_sz, 0, maxlen - compressed_sz); + + // Output as Base85 encoded + FILE* out = stdout; + fprintf(out, "// File: '%s' (%d bytes)\n", filename, (int)data_sz); + fprintf(out, "// Exported using binary_to_compressed_c.cpp\n"); + const char* static_str = use_static ? "static " : ""; + const char* compressed_str = use_compression ? "compressed_" : ""; + if (use_base85_encoding) + { + fprintf(out, "%sconst char %s_%sdata_base85[%d+1] =\n \"", static_str, symbol, compressed_str, (int)((compressed_sz + 3) / 4)*5); + char prev_c = 0; + for (int src_i = 0; src_i < compressed_sz; src_i += 4) + { + // This is made a little more complicated by the fact that ??X sequences are interpreted as trigraphs by old C/C++ compilers. So we need to escape pairs of ??. + unsigned int d = *(unsigned int*)(compressed + src_i); + for (unsigned int n5 = 0; n5 < 5; n5++, d /= 85) + { + char c = Encode85Byte(d); + fprintf(out, (c == '?' && prev_c == '?') ? "\\%c" : "%c", c); + prev_c = c; + } + if ((src_i % 112) == 112 - 4) + fprintf(out, "\"\n \""); + } + fprintf(out, "\";\n\n"); + } + else + { + fprintf(out, "%sconst unsigned int %s_%ssize = %d;\n", static_str, symbol, compressed_str, (int)compressed_sz); + fprintf(out, "%sconst unsigned int %s_%sdata[%d/4] =\n{", static_str, symbol, compressed_str, (int)((compressed_sz + 3) / 4)*4); + int column = 0; + for (int i = 0; i < compressed_sz; i += 4) + { + unsigned int d = *(unsigned int*)(compressed + i); + if ((column++ % 12) == 0) + fprintf(out, "\n 0x%08x, ", d); + else + fprintf(out, "0x%08x, ", d); + } + fprintf(out, "\n};\n\n"); + } + + // Cleanup + delete[] data; + if (use_compression) + delete[] compressed; + return true; +} + +// stb_compress* from stb.h - definition + +//////////////////// compressor /////////////////////// + +static stb_uint stb_adler32(stb_uint adler32, stb_uchar *buffer, stb_uint buflen) +{ + const unsigned long ADLER_MOD = 65521; + unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16; + unsigned long blocklen, i; + + blocklen = buflen % 5552; + while (buflen) { + for (i=0; i + 7 < blocklen; i += 8) { + s1 += buffer[0], s2 += s1; + s1 += buffer[1], s2 += s1; + s1 += buffer[2], s2 += s1; + s1 += buffer[3], s2 += s1; + s1 += buffer[4], s2 += s1; + s1 += buffer[5], s2 += s1; + s1 += buffer[6], s2 += s1; + s1 += buffer[7], s2 += s1; + + buffer += 8; + } + + for (; i < blocklen; ++i) + s1 += *buffer++, s2 += s1; + + s1 %= ADLER_MOD, s2 %= ADLER_MOD; + buflen -= blocklen; + blocklen = 5552; + } + return (s2 << 16) + s1; +} + +static unsigned int stb_matchlen(stb_uchar *m1, stb_uchar *m2, stb_uint maxlen) +{ + stb_uint i; + for (i=0; i < maxlen; ++i) + if (m1[i] != m2[i]) return i; + return i; +} + +// simple implementation that just takes the source data in a big block + +static stb_uchar *stb__out; +static FILE *stb__outfile; +static stb_uint stb__outbytes; + +static void stb__write(unsigned char v) +{ + fputc(v, stb__outfile); + ++stb__outbytes; +} + +//#define stb_out(v) (stb__out ? *stb__out++ = (stb_uchar) (v) : stb__write((stb_uchar) (v))) +#define stb_out(v) do { if (stb__out) *stb__out++ = (stb_uchar) (v); else stb__write((stb_uchar) (v)); } while (0) + +static void stb_out2(stb_uint v) { stb_out(v >> 8); stb_out(v); } +static void stb_out3(stb_uint v) { stb_out(v >> 16); stb_out(v >> 8); stb_out(v); } +static void stb_out4(stb_uint v) { stb_out(v >> 24); stb_out(v >> 16); stb_out(v >> 8 ); stb_out(v); } + +static void outliterals(stb_uchar *in, int numlit) +{ + while (numlit > 65536) { + outliterals(in,65536); + in += 65536; + numlit -= 65536; + } + + if (numlit == 0) ; + else if (numlit <= 32) stb_out (0x000020 + numlit-1); + else if (numlit <= 2048) stb_out2(0x000800 + numlit-1); + else /* numlit <= 65536) */ stb_out3(0x070000 + numlit-1); + + if (stb__out) { + memcpy(stb__out,in,numlit); + stb__out += numlit; + } else + fwrite(in, 1, numlit, stb__outfile); +} + +static int stb__window = 0x40000; // 256K + +static int stb_not_crap(int best, int dist) +{ + return ((best > 2 && dist <= 0x00100) + || (best > 5 && dist <= 0x04000) + || (best > 7 && dist <= 0x80000)); +} + +static stb_uint stb__hashsize = 32768; + +// note that you can play with the hashing functions all you +// want without needing to change the decompressor +#define stb__hc(q,h,c) (((h) << 7) + ((h) >> 25) + q[c]) +#define stb__hc2(q,h,c,d) (((h) << 14) + ((h) >> 18) + (q[c] << 7) + q[d]) +#define stb__hc3(q,c,d,e) ((q[c] << 14) + (q[d] << 7) + q[e]) + +static unsigned int stb__running_adler; + +static int stb_compress_chunk(stb_uchar *history, + stb_uchar *start, + stb_uchar *end, + int length, + int *pending_literals, + stb_uchar **chash, + stb_uint mask) +{ + (void)history; + int window = stb__window; + stb_uint match_max; + stb_uchar *lit_start = start - *pending_literals; + stb_uchar *q = start; + +#define STB__SCRAMBLE(h) (((h) + ((h) >> 16)) & mask) + + // stop short of the end so we don't scan off the end doing + // the hashing; this means we won't compress the last few bytes + // unless they were part of something longer + while (q < start+length && q+12 < end) { + int m; + stb_uint h1,h2,h3,h4, h; + stb_uchar *t; + int best = 2, dist=0; + + if (q+65536 > end) + match_max = (stb_uint)(end-q); + else + match_max = 65536; + +#define stb__nc(b,d) ((d) <= window && ((b) > 9 || stb_not_crap((int)(b),(int)(d)))) + +#define STB__TRY(t,p) /* avoid retrying a match we already tried */ \ + if (p ? dist != (int)(q-t) : 1) \ + if ((m = stb_matchlen(t, q, match_max)) > best) \ + if (stb__nc(m,q-(t))) \ + best = m, dist = (int)(q - (t)) + + // rather than search for all matches, only try 4 candidate locations, + // chosen based on 4 different hash functions of different lengths. + // this strategy is inspired by LZO; hashing is unrolled here using the + // 'hc' macro + h = stb__hc3(q,0, 1, 2); h1 = STB__SCRAMBLE(h); + t = chash[h1]; if (t) STB__TRY(t,0); + h = stb__hc2(q,h, 3, 4); h2 = STB__SCRAMBLE(h); + h = stb__hc2(q,h, 5, 6); t = chash[h2]; if (t) STB__TRY(t,1); + h = stb__hc2(q,h, 7, 8); h3 = STB__SCRAMBLE(h); + h = stb__hc2(q,h, 9,10); t = chash[h3]; if (t) STB__TRY(t,1); + h = stb__hc2(q,h,11,12); h4 = STB__SCRAMBLE(h); + t = chash[h4]; if (t) STB__TRY(t,1); + + // because we use a shared hash table, can only update it + // _after_ we've probed all of them + chash[h1] = chash[h2] = chash[h3] = chash[h4] = q; + + if (best > 2) + assert(dist > 0); + + // see if our best match qualifies + if (best < 3) { // fast path literals + ++q; + } else if (best > 2 && best <= 0x80 && dist <= 0x100) { + outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best); + stb_out(0x80 + best-1); + stb_out(dist-1); + } else if (best > 5 && best <= 0x100 && dist <= 0x4000) { + outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best); + stb_out2(0x4000 + dist-1); + stb_out(best-1); + } else if (best > 7 && best <= 0x100 && dist <= 0x80000) { + outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best); + stb_out3(0x180000 + dist-1); + stb_out(best-1); + } else if (best > 8 && best <= 0x10000 && dist <= 0x80000) { + outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best); + stb_out3(0x100000 + dist-1); + stb_out2(best-1); + } else if (best > 9 && dist <= 0x1000000) { + if (best > 65536) best = 65536; + outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best); + if (best <= 0x100) { + stb_out(0x06); + stb_out3(dist-1); + stb_out(best-1); + } else { + stb_out(0x04); + stb_out3(dist-1); + stb_out2(best-1); + } + } else { // fallback literals if no match was a balanced tradeoff + ++q; + } + } + + // if we didn't get all the way, add the rest to literals + if (q-start < length) + q = start+length; + + // the literals are everything from lit_start to q + *pending_literals = (int)(q - lit_start); + + stb__running_adler = stb_adler32(stb__running_adler, start, (stb_uint)(q - start)); + return (int)(q - start); +} + +static int stb_compress_inner(stb_uchar *input, stb_uint length) +{ + int literals = 0; + stb_uint len,i; + + stb_uchar **chash; + chash = (stb_uchar**) malloc(stb__hashsize * sizeof(stb_uchar*)); + if (chash == nullptr) return 0; // failure + for (i=0; i < stb__hashsize; ++i) + chash[i] = nullptr; + + // stream signature + stb_out(0x57); stb_out(0xbc); + stb_out2(0); + + stb_out4(0); // 64-bit length requires 32-bit leading 0 + stb_out4(length); + stb_out4(stb__window); + + stb__running_adler = 1; + + len = stb_compress_chunk(input, input, input+length, length, &literals, chash, stb__hashsize-1); + assert(len == length); + + outliterals(input+length - literals, literals); + + free(chash); + + stb_out2(0x05fa); // end opcode + + stb_out4(stb__running_adler); + + return 1; // success +} + +stb_uint stb_compress(stb_uchar *out, stb_uchar *input, stb_uint length) +{ + stb__out = out; + stb__outfile = nullptr; + + stb_compress_inner(input, length); + + return (stb_uint)(stb__out - out); +} diff --git a/lib/imgui-1.90.7/misc/freetype/README.md b/lib/imgui-1.90.7/misc/freetype/README.md new file mode 100644 index 0000000..275a538 --- /dev/null +++ b/lib/imgui-1.90.7/misc/freetype/README.md @@ -0,0 +1,44 @@ +# 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://freetype.org/freetype2/docs/reference/ft2-glyph_retrieval.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 settings are ignored but also not so much necessary with the higher quality rendering. + +### Comparison + +Small, thin anti-aliased fonts typically benefit a lot from FreeType's hinting: + + +### Colorful glyphs/emojis + +You can use the `ImGuiFreeTypeBuilderFlags_LoadColor` flag to load certain colorful glyphs. See the +["Using Colorful Glyphs/Emojis"](https://github.com/ocornut/imgui/blob/master/docs/FONTS.md#using-colorful-glyphsemojis) section of FONTS.md. + + + +### Using OpenType SVG fonts (SVGinOT) +- *SVG in Open Type* is a standard by Adobe and Mozilla for color OpenType and Open Font Format fonts. It allows font creators to embed complete SVG files within a font enabling full color and even animations. +- Popular fonts such as [twemoji](https://github.com/13rac1/twemoji-color-font) and fonts made with [scfbuild](https://github.com/13rac1/scfbuild) is SVGinOT +- Requires: [lunasvg](https://github.com/sammycage/lunasvg) v2.3.2 and above + 1. Add `#define IMGUI_ENABLE_FREETYPE_LUNASVG` in your `imconfig.h`. + 2. Get latest lunasvg binaries or build yourself. Under Windows you may use vcpkg with: `vcpkg install lunasvg --triplet=x64-windows`. diff --git a/lib/imgui-1.90.7/misc/freetype/imgui_freetype.cpp b/lib/imgui-1.90.7/misc/freetype/imgui_freetype.cpp new file mode 100644 index 0000000..a5acab3 --- /dev/null +++ b/lib/imgui-1.90.7/misc/freetype/imgui_freetype.cpp @@ -0,0 +1,950 @@ +// 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) +// 2023/11/13: added support for ImFontConfig::RasterizationDensity field for scaling render density without scaling metrics. +// 2023/08/01: added support for SVG fonts, enable by using '#define IMGUI_ENABLE_FREETYPE_LUNASVG' (#6591) +// 2023/01/04: fixed a packing issue which in some occurrences would prevent large amount of glyphs from being packed correctly. +// 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 preferred 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.h" +#ifndef IMGUI_DISABLE +#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 IMGUI_ENABLE_FREETYPE_LUNASVG +#include FT_OTSVG_H // <freetype/otsvg.h> +#include FT_BBOX_H // <freetype/ftbbox.h> +#include <lunasvg.h> +#if !((FREETYPE_MAJOR >= 2) && (FREETYPE_MINOR >= 12)) +#error IMGUI_ENABLE_FREETYPE_LUNASVG requires FreeType version >= 2.12 +#endif +#endif + +#ifdef _MSC_VER +#pragma warning (push) +#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 + +#ifdef __GNUC__ +#pragma GCC diagnostic push +#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 +#ifndef __clang__ +#pragma GCC diagnostic ignored "-Wsubobject-linkage" // warning: 'xxxx' has a field 'xxxx' whose type uses the anonymous namespace +#endif +#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 = nullptr; + +// Lunasvg support +#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG +static FT_Error ImGuiLunasvgPortInit(FT_Pointer* state); +static void ImGuiLunasvgPortFree(FT_Pointer* state); +static FT_Error ImGuiLunasvgPortRender(FT_GlyphSlot slot, FT_Pointer* _state); +static FT_Error ImGuiLunasvgPortPresetSlot(FT_GlyphSlot slot, FT_Bool cache, FT_Pointer* _state); +#endif + +//------------------------------------------------------------------------- +// 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 = nullptr); + ~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; + float RasterizationDensity; + float InvRasterizationDensity; + }; + + // 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; + + RasterizationDensity = cfg.RasterizerDensity; + InvRasterizationDensity = 1.0f / RasterizationDensity; + + memset(&Info, 0, sizeof(Info)); + SetPixelHeight((uint32_t)cfg.SizePixels); + + return true; + } + + void FreeTypeFont::CloseFont() + { + if (Face) + { + FT_Done_Face(Face); + Face = nullptr; + } + } + + 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 * RasterizationDensity); + 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 * InvRasterizationDensity); + Info.Ascender = (float)FT_CEIL(metrics.ascender) * InvRasterizationDensity; + Info.Descender = (float)FT_CEIL(metrics.descender) * InvRasterizationDensity; + Info.LineSpacing = (float)FT_CEIL(metrics.height) * InvRasterizationDensity; + Info.LineGap = (float)FT_CEIL(metrics.height - metrics.ascender + metrics.descender) * InvRasterizationDensity; + Info.MaxAdvanceWidth = (float)FT_CEIL(metrics.max_advance) * InvRasterizationDensity; + } + + const FT_Glyph_Metrics* FreeTypeFont::LoadGlyph(uint32_t codepoint) + { + uint32_t glyph_index = FT_Get_Char_Index(Face, codepoint); + if (glyph_index == 0) + return nullptr; + + // 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 nullptr; + + // Need an outline for this to work + FT_GlyphSlot slot = Face->glyph; +#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG + IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP || slot->format == FT_GLYPH_FORMAT_SVG); +#else +#if ((FREETYPE_MAJOR >= 2) && (FREETYPE_MINOR >= 12)) + IM_ASSERT(slot->format != FT_GLYPH_FORMAT_SVG && "The font contains SVG glyphs, you'll need to enable IMGUI_ENABLE_FREETYPE_LUNASVG in imconfig.h and install required libraries in order to use this font"); +#endif + IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP); +#endif // IMGUI_ENABLE_FREETYPE_LUNASVG + + // 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 nullptr; + + 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 != nullptr); + 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 == nullptr) + { + 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 == nullptr) + { + 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!"); + } + } +} // namespace + +#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((void*)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 = 0; + 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) + { + // Check for valid range. This may also help detect *some* dangling pointers, because a common + // user error is to setup ImFontConfig::GlyphRanges with a pointer to data that isn't persistent. + IM_ASSERT(src_range[0] <= src_range[1]); + 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 mind 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 == nullptr) + 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 == nullptr) + 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)); + } + IM_ASSERT(buf_bitmap_current_used_bytes + bitmap_size_in_bytes <= BITMAP_BUFFERS_CHUNK_SIZE); // We could probably allocate custom-sized buffer instead. + + // 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 : nullptr); + + 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 - atlas->TexGlyphPadding, TEX_HEIGHT_MAX - atlas->TexGlyphPadding, 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 * src_tmp.Font.InvRasterizationDensity + font_off_x; + float y0 = info.OffsetY * src_tmp.Font.InvRasterizationDensity + font_off_y; + float x1 = x0 + info.Width * src_tmp.Font.InvRasterizationDensity; + float y1 = y0 + info.Height * src_tmp.Font.InvRasterizationDensity; + 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 * src_tmp.Font.InvRasterizationDensity); + + 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 != nullptr) + { + 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 = nullptr; + } + 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 == nullptr) + return GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData); + + if (new_size == 0) + { + GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData); + return nullptr; + } + + 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 = nullptr; + 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); + +#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG + // Install svg hooks for FreeType + // https://freetype.org/freetype2/docs/reference/ft2-properties.html#svg-hooks + // https://freetype.org/freetype2/docs/reference/ft2-svg_fonts.html#svg_fonts + SVG_RendererHooks hooks = { ImGuiLunasvgPortInit, ImGuiLunasvgPortFree, ImGuiLunasvgPortRender, ImGuiLunasvgPortPresetSlot }; + FT_Property_Set(ft_library, "ot-svg", "svg-hooks", &hooks); +#endif // IMGUI_ENABLE_FREETYPE_LUNASVG + + 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; +} + +#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG +// For more details, see https://gitlab.freedesktop.org/freetype/freetype-demos/-/blob/master/src/rsvg-port.c +// The original code from the demo is licensed under CeCILL-C Free Software License Agreement (https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/LICENSE.TXT) +struct LunasvgPortState +{ + FT_Error err = FT_Err_Ok; + lunasvg::Matrix matrix; + std::unique_ptr<lunasvg::Document> svg = nullptr; +}; + +static FT_Error ImGuiLunasvgPortInit(FT_Pointer* _state) +{ + *_state = IM_NEW(LunasvgPortState)(); + return FT_Err_Ok; +} + +static void ImGuiLunasvgPortFree(FT_Pointer* _state) +{ + IM_DELETE(*(LunasvgPortState**)_state); +} + +static FT_Error ImGuiLunasvgPortRender(FT_GlyphSlot slot, FT_Pointer* _state) +{ + LunasvgPortState* state = *(LunasvgPortState**)_state; + + // If there was an error while loading the svg in ImGuiLunasvgPortPresetSlot(), the renderer hook still get called, so just returns the error. + if (state->err != FT_Err_Ok) + return state->err; + + // rows is height, pitch (or stride) equals to width * sizeof(int32) + lunasvg::Bitmap bitmap((uint8_t*)slot->bitmap.buffer, slot->bitmap.width, slot->bitmap.rows, slot->bitmap.pitch); + state->svg->setMatrix(state->svg->matrix().identity()); // Reset the svg matrix to the default value + state->svg->render(bitmap, state->matrix); // state->matrix is already scaled and translated + state->err = FT_Err_Ok; + return state->err; +} + +static FT_Error ImGuiLunasvgPortPresetSlot(FT_GlyphSlot slot, FT_Bool cache, FT_Pointer* _state) +{ + FT_SVG_Document document = (FT_SVG_Document)slot->other; + LunasvgPortState* state = *(LunasvgPortState**)_state; + FT_Size_Metrics& metrics = document->metrics; + + // This function is called twice, once in the FT_Load_Glyph() and another right before ImGuiLunasvgPortRender(). + // If it's the latter, don't do anything because it's // already done in the former. + if (cache) + return state->err; + + state->svg = lunasvg::Document::loadFromData((const char*)document->svg_document, document->svg_document_length); + if (state->svg == nullptr) + { + state->err = FT_Err_Invalid_SVG_Document; + return state->err; + } + + lunasvg::Box box = state->svg->box(); + double scale = std::min(metrics.x_ppem / box.w, metrics.y_ppem / box.h); + double xx = (double)document->transform.xx / (1 << 16); + double xy = -(double)document->transform.xy / (1 << 16); + double yx = -(double)document->transform.yx / (1 << 16); + double yy = (double)document->transform.yy / (1 << 16); + double x0 = (double)document->delta.x / 64 * box.w / metrics.x_ppem; + double y0 = -(double)document->delta.y / 64 * box.h / metrics.y_ppem; + + // Scale and transform, we don't translate the svg yet + state->matrix.identity(); + state->matrix.scale(scale, scale); + state->matrix.transform(xx, xy, yx, yy, x0, y0); + state->svg->setMatrix(state->matrix); + + // Pre-translate the matrix for the rendering step + state->matrix.translate(-box.x, -box.y); + + // Get the box again after the transformation + box = state->svg->box(); + + // Calculate the bitmap size + slot->bitmap_left = FT_Int(box.x); + slot->bitmap_top = FT_Int(-box.y); + slot->bitmap.rows = (unsigned int)(ImCeil((float)box.h)); + slot->bitmap.width = (unsigned int)(ImCeil((float)box.w)); + slot->bitmap.pitch = slot->bitmap.width * 4; + slot->bitmap.pixel_mode = FT_PIXEL_MODE_BGRA; + + // Compute all the bearings and set them correctly. The outline is scaled already, we just need to use the bounding box. + double metrics_width = box.w; + double metrics_height = box.h; + double horiBearingX = box.x; + double horiBearingY = -box.y; + double vertBearingX = slot->metrics.horiBearingX / 64.0 - slot->metrics.horiAdvance / 64.0 / 2.0; + double vertBearingY = (slot->metrics.vertAdvance / 64.0 - slot->metrics.height / 64.0) / 2.0; + slot->metrics.width = FT_Pos(IM_ROUND(metrics_width * 64.0)); // Using IM_ROUND() assume width and height are positive + slot->metrics.height = FT_Pos(IM_ROUND(metrics_height * 64.0)); + slot->metrics.horiBearingX = FT_Pos(horiBearingX * 64); + slot->metrics.horiBearingY = FT_Pos(horiBearingY * 64); + slot->metrics.vertBearingX = FT_Pos(vertBearingX * 64); + slot->metrics.vertBearingY = FT_Pos(vertBearingY * 64); + + if (slot->metrics.vertAdvance == 0) + slot->metrics.vertAdvance = FT_Pos(metrics_height * 1.2 * 64.0); + + state->err = FT_Err_Ok; + return state->err; +} + +#endif // #ifdef IMGUI_ENABLE_FREETYPE_LUNASVG + +//----------------------------------------------------------------------------- + +#ifdef __GNUC__ +#pragma GCC diagnostic pop +#endif + +#ifdef _MSC_VER +#pragma warning (pop) +#endif + +#endif // #ifndef IMGUI_DISABLE diff --git a/lib/imgui-1.90.7/misc/freetype/imgui_freetype.h b/lib/imgui-1.90.7/misc/freetype/imgui_freetype.h new file mode 100644 index 0000000..b4e1d48 --- /dev/null +++ b/lib/imgui-1.90.7/misc/freetype/imgui_freetype.h @@ -0,0 +1,51 @@ +// dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder) +// (headers) + +#pragma once +#include "imgui.h" // IMGUI_API +#ifndef IMGUI_DISABLE + +// 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 = nullptr); + + // Obsolete names (will be removed soon) +#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS + //static inline bool BuildFontAtlas(ImFontAtlas* atlas, unsigned int flags = 0) { atlas->FontBuilderIO = GetBuilderForFreeType(); atlas->FontBuilderFlags = flags; return atlas->Build(); } // Prefer using '#define IMGUI_ENABLE_FREETYPE' +#endif +} + +#endif // #ifndef IMGUI_DISABLE diff --git a/lib/imgui-1.90.7/misc/single_file/imgui_single_file.h b/lib/imgui-1.90.7/misc/single_file/imgui_single_file.h new file mode 100644 index 0000000..7ca31e0 --- /dev/null +++ b/lib/imgui-1.90.7/misc/single_file/imgui_single_file.h @@ -0,0 +1,29 @@ +// dear imgui: single-file wrapper include +// We use this to validate compiling all *.cpp files in a same compilation unit. +// Users of that technique (also called "Unity builds") can generally provide this themselves, +// so we don't really recommend you use this in your projects. + +// Do this: +// #define IMGUI_IMPLEMENTATION +// Before you include this file in *one* C++ file to create the implementation. +// Using this in your project will leak the contents of imgui_internal.h and ImVec2 operators in this compilation unit. + +#ifdef IMGUI_IMPLEMENTATION +#define IMGUI_DEFINE_MATH_OPERATORS +#endif + +#include "../../imgui.h" +#ifdef IMGUI_ENABLE_FREETYPE +#include "../../misc/freetype/imgui_freetype.h" +#endif + +#ifdef IMGUI_IMPLEMENTATION +#include "../../imgui.cpp" +#include "../../imgui_demo.cpp" +#include "../../imgui_draw.cpp" +#include "../../imgui_tables.cpp" +#include "../../imgui_widgets.cpp" +#ifdef IMGUI_ENABLE_FREETYPE +#include "../../misc/freetype/imgui_freetype.cpp" +#endif +#endif |