pwmgr

CMAKE_MINIMUM_REQUIRED(VERSION 3.22)

PROJECT("test_gui")

CMAKE_POLICY(SET CMP0054 NEW)

# This is a neat trick to prevent in source builds

IF (CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)

MESSAGE(FATAL_ERROR "Prevented in-tree build. This is bad practice; you "

"should be running cmake from inside a build directory.")

ENDIF()

################################################################################

# OS Flavor Detection

################################################################################

# Use /etc/os-release to determine Linux flavor and version

EXECUTE_PROCESS(COMMAND bash -c "grep \"^NAME=\" /etc/os-release | cut -c7- | rev | cut -c2- | rev"

OUTPUT_VARIABLE DISTRIB_ID

OUTPUT_STRIP_TRAILING_WHITESPACE

)

EXECUTE_PROCESS(COMMAND bash -c "grep \"^VERSION_ID=\" /etc/os-release | cut -c13- | rev | cut -c2- | rev"

OUTPUT_VARIABLE DISTRIB_RELEASE

OUTPUT_STRIP_TRAILING_WHITESPACE

)

# Output the parsed ID and release version

MESSAGE(STATUS "DISTRIB_ID: " ${DISTRIB_ID})

MESSAGE(STATUS "DISTRIB_RELEASE: " ${DISTRIB_RELEASE})

################################################################################

# Build Configuration

################################################################################

# Do not let CMake add the build directory path to RPATH. This means that CL/SL

# cannot be run from the build directory and must be properly installed.

SET(CMAKE_SKIP_BUILD_RPATH TRUE)

# Do not allow CMake to find libraries in /usr/local as that's where things

# like CUDA end up (e.g. /usr/local/cuda-11.3/)

# BIG NOTE: CMAKE_IGNORE_PATH must be a list of full paths *NOT* prefixes

SET(CMAKE_IGNORE_PATH "/usr/local/;/usr/local/lib;/usr/local/lib/cmake;"

"/usr/local/cuda/targets/x86_64-linux/lib")

# Uncomment this line to enable AddressSanitizer; remember to also disable

# tcmalloc. NOTE: although the gold linker is faster for general usage it has

# several bugs when used with LTO and has therefore been removed from the

# line below (-fuse-ld=gold).

# SET(CMAKE_CXX_FLAGS "-fsanitize=undefined -fno-sanitize=vptr -fno-omit-frame-pointer")

# SET(CMAKE_CXX_FLAGS "-fsanitize=address -fno-omit-frame-pointer")

# SET(CMAKE_CXX_FLAGS "-fsanitize=thread -fno-omit-frame-pointer")

#

# Set the compile flags

#

SET(CMAKE_CXX_STANDARD 17)

SET(CMAKE_CXX_STANDARD_REQUIRED ON)

# NOTE: gnu extensions are essentially required for proper 128 bit integer support

# See: https://quuxplusone.github.io/blog/2019/02/28/is-int128-integral/

SET(CMAKE_CXX_EXTENSIONS ON)

SET(CMAKE_CXX_VISIBILITY_PRESET hidden)

SET(CMAKE_C_STANDARD 11)

SET(CMAKE_C_STANDARD_REQUIRED ON)

SET(CMAKE_C_VISIBILITY_PRESET hidden)

SET(COMPILE_FLAGS "-g -O3 -march=haswell -mtune=generic")

SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${COMPILE_FLAGS}")

SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMPILE_FLAGS}")

################################################################################

# Dependencies

################################################################################

#FIND_FILE(SDL2_INCLUDE_DIR NAME SDL.h HINTS SDL2)

#FIND_LIBRARY(SDL2_LIBRARY NAME SDL2)

FIND_PACKAGE(SDL2 REQUIRED)

MESSAGE(STATUS "SDL2 include path: ${SDL2_INCLUDE_DIRS}")

################################################################################

# Include paths

################################################################################

INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/src/imgui)

INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/src/backend)

################################################################################

# Source

################################################################################

SET(imgui_sources

${CMAKE_CURRENT_SOURCE_DIR}/src/imgui/imgui.cpp

${CMAKE_CURRENT_SOURCE_DIR}/src/imgui/imgui_demo.cpp

${CMAKE_CURRENT_SOURCE_DIR}/src/imgui/imgui_draw.cpp

${CMAKE_CURRENT_SOURCE_DIR}/src/imgui/imgui_tables.cpp

${CMAKE_CURRENT_SOURCE_DIR}/src/imgui/imgui_widgets.cpp

)

SET(backend_sources

${CMAKE_CURRENT_SOURCE_DIR}/src/backend/imgui_impl_sdl2.cpp

${CMAKE_CURRENT_SOURCE_DIR}/src/backend/imgui_impl_sdlrenderer2.cpp

)

################################################################################

# Target: example

################################################################################

SET(example_sources

${CMAKE_CURRENT_SOURCE_DIR}/src/main.cpp

)

ADD_EXECUTABLE(example

${imgui_sources}

${backend_sources}

${example_sources})

TARGET_INCLUDE_DIRECTORIES(example PUBLIC ${SDL2_INCLUDE_DIRS})

TARGET_LINK_LIBRARIES(example ${SDL2_LIBRARIES})

// 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);

}

// dear imgui: Platform Backend for SDL2

// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)

// (Info: SDL2 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)

// (Prefer SDL 2.0.5+ for full feature support.)

// Implemented features:

// [X] Platform: Clipboard support.

// [X] Platform: Mouse support. Can discriminate Mouse/TouchScreen.

// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy SDL_SCANCODE_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]

// [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.

// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.

// [X] Platform: Basic IME support. App needs to call 'SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");' before SDL_CreateWindow()!.

// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.

// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.

// Learn about Dear ImGui:

// - FAQ https://dearimgui.com/faq

// - Getting Started https://dearimgui.com/getting-started

// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).

// - Introduction, links and more at the top of imgui.cpp

// CHANGELOG

// (minor and older changes stripped away, please see git history for details)

// 2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys, app back/forward keys.

// 2023-04-06: Inputs: Avoid calling SDL_StartTextInput()/SDL_StopTextInput() as they don't only pertain to IME. It's unclear exactly what their relation is to IME. (#6306)

// 2023-04-04: Inputs: Added support for io.AddMouseSourceEvent() to discriminate ImGuiMouseSource_Mouse/ImGuiMouseSource_TouchScreen. (#2702)

// 2023-02-23: Accept SDL_GetPerformanceCounter() not returning a monotonically increasing value. (#6189, #6114, #3644)

// 2023-02-07: Implement IME handler (io.SetPlatformImeDataFn will call SDL_SetTextInputRect()/SDL_StartTextInput()).

// 2023-02-07: *BREAKING CHANGE* Renamed this backend file from imgui_impl_sdl.cpp/.h to imgui_impl_sdl2.cpp/.h in prevision for the future release of SDL3.

// 2023-02-02: Avoid calling SDL_SetCursor() when cursor has not changed, as the function is surprisingly costly on Mac with latest SDL (may be fixed in next SDL version).

// 2023-02-02: Added support for SDL 2.0.18+ preciseX/preciseY mouse wheel data for smooth scrolling + Scaling X value on Emscripten (bug?). (#4019, #6096)

// 2023-02-02: Removed SDL_MOUSEWHEEL value clamping, as values seem correct in latest Emscripten. (#4019)

// 2023-02-01: Flipping SDL_MOUSEWHEEL 'wheel.x' value to match other backends and offer consistent horizontal scrolling direction. (#4019, #6096, #1463)

// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.

// 2022-09-26: Inputs: Disable SDL 2.0.22 new "auto capture" (SDL_HINT_MOUSE_AUTO_CAPTURE) which prevents drag and drop across windows for multi-viewport support + don't capture when drag and dropping. (#5710)

// 2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported).

// 2022-03-22: Inputs: Fix mouse position issues when dragging outside of boundaries. SDL_CaptureMouse() erroneously still gives out LEAVE events when hovering OS decorations.

// 2022-03-22: Inputs: Added support for extra mouse buttons (SDL_BUTTON_X1/SDL_BUTTON_X2).

// 2022-02-04: Added SDL_Renderer* parameter to ImGui_ImplSDL2_InitForSDLRenderer(), so we can use SDL_GetRendererOutputSize() instead of SDL_GL_GetDrawableSize() when bound to a SDL_Renderer.

// 2022-01-26: Inputs: replaced short-lived io.AddKeyModsEvent() (added two weeks ago) with io.AddKeyEvent() using ImGuiKey_ModXXX flags. Sorry for the confusion.

// 2021-01-20: Inputs: calling new io.AddKeyAnalogEvent() for gamepad support, instead of writing directly to io.NavInputs[].

// 2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+).

// 2022-01-17: Inputs: always update key mods next and before key event (not in NewFrame) to fix input queue with very low framerates.

// 2022-01-12: Update mouse inputs using SDL_MOUSEMOTION/SDL_WINDOWEVENT_LEAVE + fallback to provide it when focused but not hovered/captured. More standard and will allow us to pass it to future input queue API.

// 2022-01-12: Maintain our own copy of MouseButtonsDown mask instead of using ImGui::IsAnyMouseDown() which will be obsoleted.

// 2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range.

// 2021-08-17: Calling io.AddFocusEvent() on SDL_WINDOWEVENT_FOCUS_GAINED/SDL_WINDOWEVENT_FOCUS_LOST.

// 2021-07-29: Inputs: MousePos is correctly reported when the host platform window is hovered but not focused (using SDL_GetMouseFocus() + SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, requires SDL 2.0.5+)

// 2021-06-29: *BREAKING CHANGE* Removed 'SDL_Window* window' parameter to ImGui_ImplSDL2_NewFrame() which was unnecessary.

// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).

// 2021-03-22: Rework global mouse pos availability check listing supported platforms explicitly, effectively fixing mouse access on Raspberry Pi. (#2837, #3950)

// 2020-05-25: Misc: Report a zero display-size when window is minimized, to be consistent with other backends.

// 2020-02-20: Inputs: Fixed mapping for ImGuiKey_KeyPadEnter (using SDL_SCANCODE_KP_ENTER instead of SDL_SCANCODE_RETURN2).

// 2019-12-17: Inputs: On Wayland, use SDL_GetMouseState (because there is no global mouse state).

// 2019-12-05: Inputs: Added support for ImGuiMouseCursor_NotAllowed mouse cursor.

// 2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.

// 2019-04-23: Inputs: Added support for SDL_GameController (if ImGuiConfigFlags_NavEnableGamepad is set by user application).

// 2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.

// 2018-12-21: Inputs: Workaround for Android/iOS which don't seem to handle focus related calls.

// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.

// 2018-11-14: Changed the signature of ImGui_ImplSDL2_ProcessEvent() to take a 'const SDL_Event*'.

// 2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls.

// 2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor.

// 2018-06-08: Misc: Extracted imgui_impl_sdl.cpp/.h away from the old combined SDL2+OpenGL/Vulkan examples.

// 2018-06-08: Misc: ImGui_ImplSDL2_InitForOpenGL() now takes a SDL_GLContext parameter.

// 2018-05-09: Misc: Fixed clipboard paste memory leak (we didn't call SDL_FreeMemory on the data returned by SDL_GetClipboardText).

// 2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag.

// 2018-02-16: Inputs: Added support for mouse cursors, honoring ImGui::GetMouseCursor() value.

// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.

// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space.

// 2018-02-05: Misc: Using SDL_GetPerformanceCounter() instead of SDL_GetTicks() to be able to handle very high framerate (1000+ FPS).

// 2018-02-05: Inputs: Keyboard mapping is using scancodes everywhere instead of a confusing mixture of keycodes and scancodes.

// 2018-01-20: Inputs: Added Horizontal Mouse Wheel support.

// 2018-01-19: Inputs: When available (SDL 2.0.4+) using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging. Otherwise (SDL 2.0.3 and before) testing for SDL_WINDOW_INPUT_FOCUS instead of SDL_WINDOW_MOUSE_FOCUS.

// 2018-01-18: Inputs: Added mapping for ImGuiKey_Insert.

// 2017-08-25: Inputs: MousePos set to -FLT_MAX,-FLT_MAX when mouse is unavailable/missing (instead of -1,-1).

// 2016-10-15: Misc: Added a void* user_data parameter to Clipboard function handlers.

#include "imgui.h"

#ifndef IMGUI_DISABLE

#include "imgui_impl_sdl2.h"

// Clang warnings with -Weverything

#if defined(__clang__)

#pragma clang diagnostic push

#pragma clang diagnostic ignored "-Wimplicit-int-float-conversion" // warning: implicit conversion from 'xxx' to 'float' may lose precision

#endif

// SDL

#include <SDL.h>

#include <SDL_syswm.h>

#if defined(__APPLE__)

#include <TargetConditionals.h>

#endif

#if SDL_VERSION_ATLEAST(2,0,4) && !defined(__EMSCRIPTEN__) && !defined(__ANDROID__) && !(defined(__APPLE__) && TARGET_OS_IOS) && !defined(__amigaos4__)

#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE 1

#else

#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE 0

#endif

#define SDL_HAS_VULKAN SDL_VERSION_ATLEAST(2,0,6)

// SDL Data

struct ImGui_ImplSDL2_Data

{

SDL_Window* Window;

SDL_Renderer* Renderer;

Uint64 Time;

Uint32 MouseWindowID;

int MouseButtonsDown;

SDL_Cursor* MouseCursors[ImGuiMouseCursor_COUNT];

SDL_Cursor* LastMouseCursor;

int PendingMouseLeaveFrame;

char* ClipboardTextData;

bool MouseCanUseGlobalState;

ImGui_ImplSDL2_Data() { memset((void*)this, 0, sizeof(*this)); }

};

// Backend data stored in io.BackendPlatformUserData to allow support for multiple Dear ImGui contexts

// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.

// FIXME: multi-context support is not well tested and probably dysfunctional in this backend.

// FIXME: some shared resources (mouse cursor shape, gamepad) are mishandled when using multi-context.

static ImGui_ImplSDL2_Data* ImGui_ImplSDL2_GetBackendData()

{

return ImGui::GetCurrentContext() ? (ImGui_ImplSDL2_Data*)ImGui::GetIO().BackendPlatformUserData : nullptr;

}

// Functions

static const char* ImGui_ImplSDL2_GetClipboardText(void*)

{

ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();

if (bd->ClipboardTextData)

SDL_free(bd->ClipboardTextData);

bd->ClipboardTextData = SDL_GetClipboardText();

return bd->ClipboardTextData;

}

static void ImGui_ImplSDL2_SetClipboardText(void*, const char* text)

{

SDL_SetClipboardText(text);

}

// Note: native IME will only display if user calls SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1") _before_ SDL_CreateWindow().

static void ImGui_ImplSDL2_SetPlatformImeData(ImGuiViewport*, ImGuiPlatformImeData* data)

{

if (data->WantVisible)

{

SDL_Rect r;

r.x = (int)data->InputPos.x;

r.y = (int)data->InputPos.y;

r.w = 1;

r.h = (int)data->InputLineHeight;

SDL_SetTextInputRect(&r);

}

}

static ImGuiKey ImGui_ImplSDL2_KeycodeToImGuiKey(int keycode)

{

switch (keycode)

{

case SDLK_TAB: return ImGuiKey_Tab;

case SDLK_LEFT: return ImGuiKey_LeftArrow;

case SDLK_RIGHT: return ImGuiKey_RightArrow;

case SDLK_UP: return ImGuiKey_UpArrow;

case SDLK_DOWN: return ImGuiKey_DownArrow;

case SDLK_PAGEUP: return ImGuiKey_PageUp;

case SDLK_PAGEDOWN: return ImGuiKey_PageDown;

case SDLK_HOME: return ImGuiKey_Home;

case SDLK_END: return ImGuiKey_End;

case SDLK_INSERT: return ImGuiKey_Insert;

case SDLK_DELETE: return ImGuiKey_Delete;

case SDLK_BACKSPACE: return ImGuiKey_Backspace;

case SDLK_SPACE: return ImGuiKey_Space;

case SDLK_RETURN: return ImGuiKey_Enter;

case SDLK_ESCAPE: return ImGuiKey_Escape;

case SDLK_QUOTE: return ImGuiKey_Apostrophe;

case SDLK_COMMA: return ImGuiKey_Comma;

case SDLK_MINUS: return ImGuiKey_Minus;

case SDLK_PERIOD: return ImGuiKey_Period;

case SDLK_SLASH: return ImGuiKey_Slash;

case SDLK_SEMICOLON: return ImGuiKey_Semicolon;

case SDLK_EQUALS: return ImGuiKey_Equal;

case SDLK_LEFTBRACKET: return ImGuiKey_LeftBracket;

case SDLK_BACKSLASH: return ImGuiKey_Backslash;

case SDLK_RIGHTBRACKET: return ImGuiKey_RightBracket;

case SDLK_BACKQUOTE: return ImGuiKey_GraveAccent;

case SDLK_CAPSLOCK: return ImGuiKey_CapsLock;

case SDLK_SCROLLLOCK: return ImGuiKey_ScrollLock;

case SDLK_NUMLOCKCLEAR: return ImGuiKey_NumLock;

case SDLK_PRINTSCREEN: return ImGuiKey_PrintScreen;

case SDLK_PAUSE: return ImGuiKey_Pause;

case SDLK_KP_0: return ImGuiKey_Keypad0;

case SDLK_KP_1: return ImGuiKey_Keypad1;

case SDLK_KP_2: return ImGuiKey_Keypad2;

case SDLK_KP_3: return ImGuiKey_Keypad3;

case SDLK_KP_4: return ImGuiKey_Keypad4;

case SDLK_KP_5: return ImGuiKey_Keypad5;

case SDLK_KP_6: return ImGuiKey_Keypad6;

case SDLK_KP_7: return ImGuiKey_Keypad7;

case SDLK_KP_8: return ImGuiKey_Keypad8;

case SDLK_KP_9: return ImGuiKey_Keypad9;

case SDLK_KP_PERIOD: return ImGuiKey_KeypadDecimal;

case SDLK_KP_DIVIDE: return ImGuiKey_KeypadDivide;

case SDLK_KP_MULTIPLY: return ImGuiKey_KeypadMultiply;

case SDLK_KP_MINUS: return ImGuiKey_KeypadSubtract;

case SDLK_KP_PLUS: return ImGuiKey_KeypadAdd;

case SDLK_KP_ENTER: return ImGuiKey_KeypadEnter;

case SDLK_KP_EQUALS: return ImGuiKey_KeypadEqual;

case SDLK_LCTRL: return ImGuiKey_LeftCtrl;

case SDLK_LSHIFT: return ImGuiKey_LeftShift;

case SDLK_LALT: return ImGuiKey_LeftAlt;

case SDLK_LGUI: return ImGuiKey_LeftSuper;

case SDLK_RCTRL: return ImGuiKey_RightCtrl;

case SDLK_RSHIFT: return ImGuiKey_RightShift;

case SDLK_RALT: return ImGuiKey_RightAlt;

case SDLK_RGUI: return ImGuiKey_RightSuper;

case SDLK_APPLICATION: return ImGuiKey_Menu;

case SDLK_0: return ImGuiKey_0;

case SDLK_1: return ImGuiKey_1;

case SDLK_2: return ImGuiKey_2;

case SDLK_3: return ImGuiKey_3;

case SDLK_4: return ImGuiKey_4;

case SDLK_5: return ImGuiKey_5;

case SDLK_6: return ImGuiKey_6;

case SDLK_7: return ImGuiKey_7;

case SDLK_8: return ImGuiKey_8;

case SDLK_9: return ImGuiKey_9;

case SDLK_a: return ImGuiKey_A;

case SDLK_b: return ImGuiKey_B;

case SDLK_c: return ImGuiKey_C;

case SDLK_d: return ImGuiKey_D;

case SDLK_e: return ImGuiKey_E;

case SDLK_f: return ImGuiKey_F;

case SDLK_g: return ImGuiKey_G;

case SDLK_h: return ImGuiKey_H;

case SDLK_i: return ImGuiKey_I;

case SDLK_j: return ImGuiKey_J;

case SDLK_k: return ImGuiKey_K;

case SDLK_l: return ImGuiKey_L;

case SDLK_m: return ImGuiKey_M;

case SDLK_n: return ImGuiKey_N;

case SDLK_o: return ImGuiKey_O;

case SDLK_p: return ImGuiKey_P;

case SDLK_q: return ImGuiKey_Q;

case SDLK_r: return ImGuiKey_R;

case SDLK_s: return ImGuiKey_S;

case SDLK_t: return ImGuiKey_T;

case SDLK_u: return ImGuiKey_U;

case SDLK_v: return ImGuiKey_V;

case SDLK_w: return ImGuiKey_W;

case SDLK_x: return ImGuiKey_X;

case SDLK_y: return ImGuiKey_Y;

case SDLK_z: return ImGuiKey_Z;

case SDLK_F1: return ImGuiKey_F1;

case SDLK_F2: return ImGuiKey_F2;

case SDLK_F3: return ImGuiKey_F3;

case SDLK_F4: return ImGuiKey_F4;

case SDLK_F5: return ImGuiKey_F5;

case SDLK_F6: return ImGuiKey_F6;

case SDLK_F7: return ImGuiKey_F7;

case SDLK_F8: return ImGuiKey_F8;

case SDLK_F9: return ImGuiKey_F9;

case SDLK_F10: return ImGuiKey_F10;

case SDLK_F11: return ImGuiKey_F11;

case SDLK_F12: return ImGuiKey_F12;

case SDLK_F13: return ImGuiKey_F13;

case SDLK_F14: return ImGuiKey_F14;

case SDLK_F15: return ImGuiKey_F15;

case SDLK_F16: return ImGuiKey_F16;

case SDLK_F17: return ImGuiKey_F17;

case SDLK_F18: return ImGuiKey_F18;

case SDLK_F19: return ImGuiKey_F19;

case SDLK_F20: return ImGuiKey_F20;

case SDLK_F21: return ImGuiKey_F21;

case SDLK_F22: return ImGuiKey_F22;

case SDLK_F23: return ImGuiKey_F23;

case SDLK_F24: return ImGuiKey_F24;

case SDLK_AC_BACK: return ImGuiKey_AppBack;

case SDLK_AC_FORWARD: return ImGuiKey_AppForward;

}

return ImGuiKey_None;

}

static void ImGui_ImplSDL2_UpdateKeyModifiers(SDL_Keymod sdl_key_mods)

{

ImGuiIO& io = ImGui::GetIO();

io.AddKeyEvent(ImGuiMod_Ctrl, (sdl_key_mods & KMOD_CTRL) != 0);

io.AddKeyEvent(ImGuiMod_Shift, (sdl_key_mods & KMOD_SHIFT) != 0);

io.AddKeyEvent(ImGuiMod_Alt, (sdl_key_mods & KMOD_ALT) != 0);

io.AddKeyEvent(ImGuiMod_Super, (sdl_key_mods & KMOD_GUI) != 0);

}

// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.

// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.

// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.

// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.

// If you have multiple SDL events and some of them are not meant to be used by dear imgui, you may need to filter events based on their windowID field.

bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)

{

ImGuiIO& io = ImGui::GetIO();

ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();

switch (event->type)

{

case SDL_MOUSEMOTION:

{

ImVec2 mouse_pos((float)event->motion.x, (float)event->motion.y);

io.AddMouseSourceEvent(event->motion.which == SDL_TOUCH_MOUSEID ? ImGuiMouseSource_TouchScreen : ImGuiMouseSource_Mouse);

io.AddMousePosEvent(mouse_pos.x, mouse_pos.y);

return true;

}

case SDL_MOUSEWHEEL:

{

//IMGUI_DEBUG_LOG("wheel %.2f %.2f, precise %.2f %.2f\n", (float)event->wheel.x, (float)event->wheel.y, event->wheel.preciseX, event->wheel.preciseY);

#if SDL_VERSION_ATLEAST(2,0,18) // If this fails to compile on Emscripten: update to latest Emscripten!

float wheel_x = -event->wheel.preciseX;

float wheel_y = event->wheel.preciseY;

#else

float wheel_x = -(float)event->wheel.x;

float wheel_y = (float)event->wheel.y;

#endif

#ifdef __EMSCRIPTEN__

wheel_x /= 100.0f;

#endif

io.AddMouseSourceEvent(event->wheel.which == SDL_TOUCH_MOUSEID ? ImGuiMouseSource_TouchScreen : ImGuiMouseSource_Mouse);

io.AddMouseWheelEvent(wheel_x, wheel_y);

return true;

}

case SDL_MOUSEBUTTONDOWN:

case SDL_MOUSEBUTTONUP:

{

int mouse_button = -1;

if (event->button.button == SDL_BUTTON_LEFT) { mouse_button = 0; }

if (event->button.button == SDL_BUTTON_RIGHT) { mouse_button = 1; }

if (event->button.button == SDL_BUTTON_MIDDLE) { mouse_button = 2; }

if (event->button.button == SDL_BUTTON_X1) { mouse_button = 3; }

if (event->button.button == SDL_BUTTON_X2) { mouse_button = 4; }

if (mouse_button == -1)

break;

io.AddMouseSourceEvent(event->button.which == SDL_TOUCH_MOUSEID ? ImGuiMouseSource_TouchScreen : ImGuiMouseSource_Mouse);

io.AddMouseButtonEvent(mouse_button, (event->type == SDL_MOUSEBUTTONDOWN));

bd->MouseButtonsDown = (event->type == SDL_MOUSEBUTTONDOWN) ? (bd->MouseButtonsDown | (1 << mouse_button)) : (bd->MouseButtonsDown & ~(1 << mouse_button));

return true;

}

case SDL_TEXTINPUT:

{

io.AddInputCharactersUTF8(event->text.text);

return true;

}

case SDL_KEYDOWN:

case SDL_KEYUP:

{

ImGui_ImplSDL2_UpdateKeyModifiers((SDL_Keymod)event->key.keysym.mod);

ImGuiKey key = ImGui_ImplSDL2_KeycodeToImGuiKey(event->key.keysym.sym);

io.AddKeyEvent(key, (event->type == SDL_KEYDOWN));

io.SetKeyEventNativeData(key, event->key.keysym.sym, event->key.keysym.scancode, event->key.keysym.scancode); // To support legacy indexing (<1.87 user code). Legacy backend uses SDLK_*** as indices to IsKeyXXX() functions.

return true;

}

case SDL_WINDOWEVENT:

{

// - When capturing mouse, SDL will send a bunch of conflicting LEAVE/ENTER event on every mouse move, but the final ENTER tends to be right.

// - However we won't get a correct LEAVE event for a captured window.

// - In some cases, when detaching a window from main viewport SDL may send SDL_WINDOWEVENT_ENTER one frame too late,

// causing SDL_WINDOWEVENT_LEAVE on previous frame to interrupt drag operation by clear mouse position. This is why

// we delay process the SDL_WINDOWEVENT_LEAVE events by one frame. See issue #5012 for details.

Uint8 window_event = event->window.event;

if (window_event == SDL_WINDOWEVENT_ENTER)

{

bd->MouseWindowID = event->window.windowID;

bd->PendingMouseLeaveFrame = 0;

}

if (window_event == SDL_WINDOWEVENT_LEAVE)

bd->PendingMouseLeaveFrame = ImGui::GetFrameCount() + 1;

if (window_event == SDL_WINDOWEVENT_FOCUS_GAINED)

io.AddFocusEvent(true);

else if (event->window.event == SDL_WINDOWEVENT_FOCUS_LOST)

io.AddFocusEvent(false);

return true;

}

}

return false;

}

static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer)

{

ImGuiIO& io = ImGui::GetIO();

IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");

// Check and store if we are on a SDL backend that supports global mouse position

// ("wayland" and "rpi" don't support it, but we chose to use a white-list instead of a black-list)

bool mouse_can_use_global_state = false;

#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE

const char* sdl_backend = SDL_GetCurrentVideoDriver();

const char* global_mouse_whitelist[] = { "windows", "cocoa", "x11", "DIVE", "VMAN" };

for (int n = 0; n < IM_ARRAYSIZE(global_mouse_whitelist); n++)

if (strncmp(sdl_backend, global_mouse_whitelist[n], strlen(global_mouse_whitelist[n])) == 0)

mouse_can_use_global_state = true;

#endif

// Setup backend capabilities flags

ImGui_ImplSDL2_Data* bd = IM_NEW(ImGui_ImplSDL2_Data)();

io.BackendPlatformUserData = (void*)bd;

io.BackendPlatformName = "imgui_impl_sdl2";

io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)

io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)

bd->Window = window;

bd->Renderer = renderer;

bd->MouseCanUseGlobalState = mouse_can_use_global_state;

io.SetClipboardTextFn = ImGui_ImplSDL2_SetClipboardText;

io.GetClipboardTextFn = ImGui_ImplSDL2_GetClipboardText;

io.ClipboardUserData = nullptr;

io.SetPlatformImeDataFn = ImGui_ImplSDL2_SetPlatformImeData;

// Load mouse cursors

bd->MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);

bd->MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);

bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);

bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);

bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);

bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW);

bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE);

bd->MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);

bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO);

// Set platform dependent data in viewport

// Our mouse update function expect PlatformHandle to be filled for the main viewport

ImGuiViewport* main_viewport = ImGui::GetMainViewport();

main_viewport->PlatformHandleRaw = nullptr;

SDL_SysWMinfo info;

SDL_VERSION(&info.version);

if (SDL_GetWindowWMInfo(window, &info))

{

#if defined(SDL_VIDEO_DRIVER_WINDOWS)

main_viewport->PlatformHandleRaw = (void*)info.info.win.window;

#elif defined(__APPLE__) && defined(SDL_VIDEO_DRIVER_COCOA)

main_viewport->PlatformHandleRaw = (void*)info.info.cocoa.window;

#endif

}

// From 2.0.5: Set SDL hint to receive mouse click events on window focus, otherwise SDL doesn't emit the event.

// Without this, when clicking to gain focus, our widgets wouldn't activate even though they showed as hovered.

// (This is unfortunately a global SDL setting, so enabling it might have a side-effect on your application.

// It is unlikely to make a difference, but if your app absolutely needs to ignore the initial on-focus click:

// you can ignore SDL_MOUSEBUTTONDOWN events coming right after a SDL_WINDOWEVENT_FOCUS_GAINED)

#ifdef SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH

SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");

#endif

// From 2.0.18: Enable native IME.

// IMPORTANT: This is used at the time of SDL_CreateWindow() so this will only affects secondary windows, if any.

// For the main window to be affected, your application needs to call this manually before calling SDL_CreateWindow().

#ifdef SDL_HINT_IME_SHOW_UI

SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");

#endif

// From 2.0.22: Disable auto-capture, this is preventing drag and drop across multiple windows (see #5710)

#ifdef SDL_HINT_MOUSE_AUTO_CAPTURE

SDL_SetHint(SDL_HINT_MOUSE_AUTO_CAPTURE, "0");

#endif

return true;

}

bool ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context)

{

IM_UNUSED(sdl_gl_context); // Viewport branch will need this.

return ImGui_ImplSDL2_Init(window, nullptr);

}

bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window)

{

#if !SDL_HAS_VULKAN

IM_ASSERT(0 && "Unsupported");

#endif

return ImGui_ImplSDL2_Init(window, nullptr);

}

bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window)

{

#if !defined(_WIN32)

IM_ASSERT(0 && "Unsupported");

#endif

return ImGui_ImplSDL2_Init(window, nullptr);

}

bool ImGui_ImplSDL2_InitForMetal(SDL_Window* window)

{

return ImGui_ImplSDL2_Init(window, nullptr);

}

bool ImGui_ImplSDL2_InitForSDLRenderer(SDL_Window* window, SDL_Renderer* renderer)

{

return ImGui_ImplSDL2_Init(window, renderer);

}

bool ImGui_ImplSDL2_InitForOther(SDL_Window* window)

{

return ImGui_ImplSDL2_Init(window, nullptr);

}

void ImGui_ImplSDL2_Shutdown()

{

ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();

IM_ASSERT(bd != nullptr && "No platform backend to shutdown, or already shutdown?");

ImGuiIO& io = ImGui::GetIO();

if (bd->ClipboardTextData)

SDL_free(bd->ClipboardTextData);

for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)

SDL_FreeCursor(bd->MouseCursors[cursor_n]);

bd->LastMouseCursor = nullptr;

io.BackendPlatformName = nullptr;

io.BackendPlatformUserData = nullptr;

io.BackendFlags &= ~(ImGuiBackendFlags_HasMouseCursors | ImGuiBackendFlags_HasSetMousePos | ImGuiBackendFlags_HasGamepad);

IM_DELETE(bd);

}

static void ImGui_ImplSDL2_UpdateMouseData()

{

ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();

ImGuiIO& io = ImGui::GetIO();

// We forward mouse input when hovered or captured (via SDL_MOUSEMOTION) or when focused (below)

#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE

// SDL_CaptureMouse() let the OS know e.g. that our imgui drag outside the SDL window boundaries shouldn't e.g. trigger other operations outside

SDL_CaptureMouse((bd->MouseButtonsDown != 0) ? SDL_TRUE : SDL_FALSE);

SDL_Window* focused_window = SDL_GetKeyboardFocus();

const bool is_app_focused = (bd->Window == focused_window);

#else

const bool is_app_focused = (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_INPUT_FOCUS) != 0; // SDL 2.0.3 and non-windowed systems: single-viewport only

#endif

if (is_app_focused)

{

// (Optional) Set OS mouse position from Dear ImGui if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user)

if (io.WantSetMousePos)

SDL_WarpMouseInWindow(bd->Window, (int)io.MousePos.x, (int)io.MousePos.y);

// (Optional) Fallback to provide mouse position when focused (SDL_MOUSEMOTION already provides this when hovered or captured)

if (bd->MouseCanUseGlobalState && bd->MouseButtonsDown == 0)

{

int window_x, window_y, mouse_x_global, mouse_y_global;

SDL_GetGlobalMouseState(&mouse_x_global, &mouse_y_global);

SDL_GetWindowPosition(bd->Window, &window_x, &window_y);

io.AddMousePosEvent((float)(mouse_x_global - window_x), (float)(mouse_y_global - window_y));

}

}

}

static void ImGui_ImplSDL2_UpdateMouseCursor()

{

ImGuiIO& io = ImGui::GetIO();

if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange)

return;

ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();

ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();

if (io.MouseDrawCursor || imgui_cursor == ImGuiMouseCursor_None)

{

// Hide OS mouse cursor if imgui is drawing it or if it wants no cursor

SDL_ShowCursor(SDL_FALSE);

}

else

{

// Show OS mouse cursor

SDL_Cursor* expected_cursor = bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow];

if (bd->LastMouseCursor != expected_cursor)

{

SDL_SetCursor(expected_cursor); // SDL function doesn't have an early out (see #6113)

bd->LastMouseCursor = expected_cursor;

}

SDL_ShowCursor(SDL_TRUE);

}

}

static void ImGui_ImplSDL2_UpdateGamepads()

{

ImGuiIO& io = ImGui::GetIO();

if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0) // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs.

return;

// Get gamepad

io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;

SDL_GameController* game_controller = SDL_GameControllerOpen(0);

if (!game_controller)

return;

io.BackendFlags |= ImGuiBackendFlags_HasGamepad;

// Update gamepad inputs

#define IM_SATURATE(V) (V < 0.0f ? 0.0f : V > 1.0f ? 1.0f : V)

#define MAP_BUTTON(KEY_NO, BUTTON_NO) { io.AddKeyEvent(KEY_NO, SDL_GameControllerGetButton(game_controller, BUTTON_NO) != 0); }

#define MAP_ANALOG(KEY_NO, AXIS_NO, V0, V1) { float vn = (float)(SDL_GameControllerGetAxis(game_controller, AXIS_NO) - V0) / (float)(V1 - V0); vn = IM_SATURATE(vn); io.AddKeyAnalogEvent(KEY_NO, vn > 0.1f, vn); }

const int thumb_dead_zone = 8000; // SDL_gamecontroller.h suggests using this value.

MAP_BUTTON(ImGuiKey_GamepadStart, SDL_CONTROLLER_BUTTON_START);

MAP_BUTTON(ImGuiKey_GamepadBack, SDL_CONTROLLER_BUTTON_BACK);

MAP_BUTTON(ImGuiKey_GamepadFaceLeft, SDL_CONTROLLER_BUTTON_X); // Xbox X, PS Square

MAP_BUTTON(ImGuiKey_GamepadFaceRight, SDL_CONTROLLER_BUTTON_B); // Xbox B, PS Circle

MAP_BUTTON(ImGuiKey_GamepadFaceUp, SDL_CONTROLLER_BUTTON_Y); // Xbox Y, PS Triangle

MAP_BUTTON(ImGuiKey_GamepadFaceDown, SDL_CONTROLLER_BUTTON_A); // Xbox A, PS Cross

MAP_BUTTON(ImGuiKey_GamepadDpadLeft, SDL_CONTROLLER_BUTTON_DPAD_LEFT);

MAP_BUTTON(ImGuiKey_GamepadDpadRight, SDL_CONTROLLER_BUTTON_DPAD_RIGHT);

MAP_BUTTON(ImGuiKey_GamepadDpadUp, SDL_CONTROLLER_BUTTON_DPAD_UP);

MAP_BUTTON(ImGuiKey_GamepadDpadDown, SDL_CONTROLLER_BUTTON_DPAD_DOWN);

MAP_BUTTON(ImGuiKey_GamepadL1, SDL_CONTROLLER_BUTTON_LEFTSHOULDER);

MAP_BUTTON(ImGuiKey_GamepadR1, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER);

MAP_ANALOG(ImGuiKey_GamepadL2, SDL_CONTROLLER_AXIS_TRIGGERLEFT, 0.0f, 32767);

MAP_ANALOG(ImGuiKey_GamepadR2, SDL_CONTROLLER_AXIS_TRIGGERRIGHT, 0.0f, 32767);

MAP_BUTTON(ImGuiKey_GamepadL3, SDL_CONTROLLER_BUTTON_LEFTSTICK);

MAP_BUTTON(ImGuiKey_GamepadR3, SDL_CONTROLLER_BUTTON_RIGHTSTICK);

MAP_ANALOG(ImGuiKey_GamepadLStickLeft, SDL_CONTROLLER_AXIS_LEFTX, -thumb_dead_zone, -32768);

MAP_ANALOG(ImGuiKey_GamepadLStickRight, SDL_CONTROLLER_AXIS_LEFTX, +thumb_dead_zone, +32767);

MAP_ANALOG(ImGuiKey_GamepadLStickUp, SDL_CONTROLLER_AXIS_LEFTY, -thumb_dead_zone, -32768);

MAP_ANALOG(ImGuiKey_GamepadLStickDown, SDL_CONTROLLER_AXIS_LEFTY, +thumb_dead_zone, +32767);

MAP_ANALOG(ImGuiKey_GamepadRStickLeft, SDL_CONTROLLER_AXIS_RIGHTX, -thumb_dead_zone, -32768);

MAP_ANALOG(ImGuiKey_GamepadRStickRight, SDL_CONTROLLER_AXIS_RIGHTX, +thumb_dead_zone, +32767);

MAP_ANALOG(ImGuiKey_GamepadRStickUp, SDL_CONTROLLER_AXIS_RIGHTY, -thumb_dead_zone, -32768);

MAP_ANALOG(ImGuiKey_GamepadRStickDown, SDL_CONTROLLER_AXIS_RIGHTY, +thumb_dead_zone, +32767);

#undef MAP_BUTTON

#undef MAP_ANALOG

}

void ImGui_ImplSDL2_NewFrame()

{

ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();

IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplSDL2_Init()?");

ImGuiIO& io = ImGui::GetIO();

// Setup display size (every frame to accommodate for window resizing)

int w, h;

int display_w, display_h;

SDL_GetWindowSize(bd->Window, &w, &h);

if (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_MINIMIZED)

w = h = 0;

if (bd->Renderer != nullptr)

SDL_GetRendererOutputSize(bd->Renderer, &display_w, &display_h);

else

SDL_GL_GetDrawableSize(bd->Window, &display_w, &display_h);

io.DisplaySize = ImVec2((float)w, (float)h);

if (w > 0 && h > 0)

io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);

// Setup time step (we don't use SDL_GetTicks() because it is using millisecond resolution)

// (Accept SDL_GetPerformanceCounter() not returning a monotonically increasing value. Happens in VMs and Emscripten, see #6189, #6114, #3644)

static Uint64 frequency = SDL_GetPerformanceFrequency();

Uint64 current_time = SDL_GetPerformanceCounter();

if (current_time <= bd->Time)

current_time = bd->Time + 1;

io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / frequency) : (float)(1.0f / 60.0f);

bd->Time = current_time;

if (bd->PendingMouseLeaveFrame && bd->PendingMouseLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)

{

bd->MouseWindowID = 0;

bd->PendingMouseLeaveFrame = 0;

io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);

}

ImGui_ImplSDL2_UpdateMouseData();

ImGui_ImplSDL2_UpdateMouseCursor();

// Update game controllers (if enabled and available)

ImGui_ImplSDL2_UpdateGamepads();

}

//-----------------------------------------------------------------------------

#if defined(__clang__)

#pragma clang diagnostic pop

#endif

#endif // #ifndef IMGUI_DISABLE

// dear imgui: Platform Backend for SDL2

// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)

// (Info: SDL2 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)

// Implemented features:

// [X] Platform: Clipboard support.

// [X] Platform: Mouse support. Can discriminate Mouse/TouchScreen.

// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy SDL_SCANCODE_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]

// [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.

// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.

// [X] Platform: Basic IME support. App needs to call 'SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");' before SDL_CreateWindow()!.

// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.

// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.

// Learn about Dear ImGui:

// - FAQ https://dearimgui.com/faq

// - Getting Started https://dearimgui.com/getting-started

// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).

// - Introduction, links and more at the top of imgui.cpp

#pragma once

#include "imgui.h" // IMGUI_IMPL_API

#ifndef IMGUI_DISABLE

struct SDL_Window;

struct SDL_Renderer;

typedef union SDL_Event SDL_Event;

IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context);

IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window);

IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window);

IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForMetal(SDL_Window* window);

IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForSDLRenderer(SDL_Window* window, SDL_Renderer* renderer);

IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForOther(SDL_Window* window);

IMGUI_IMPL_API void ImGui_ImplSDL2_Shutdown();

IMGUI_IMPL_API void ImGui_ImplSDL2_NewFrame();

IMGUI_IMPL_API bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event);

#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS

static inline void ImGui_ImplSDL2_NewFrame(SDL_Window*) { ImGui_ImplSDL2_NewFrame(); } // 1.84: removed unnecessary parameter

#endif

#endif // #ifndef IMGUI_DISABLE

// dear imgui: Renderer Backend for SDL_Renderer for SDL2

// (Requires: SDL 2.0.17+)

// Note how SDL_Renderer is an _optional_ component of SDL2.

// For a multi-platform app consider using e.g. SDL+DirectX on Windows and SDL+OpenGL on Linux/OSX.

// If your application will want to render any non trivial amount of graphics other than UI,

// please be aware that SDL_Renderer currently offers a limited graphic API to the end-user and

// it might be difficult to step out of those boundaries.

// Implemented features:

// [X] Renderer: User texture binding. Use 'SDL_Texture*' as ImTextureID. Read the FAQ about ImTextureID!

// [X] Renderer: Large meshes support (64k+ vertices) with 16-bit indices.

// You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.

// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.

// Learn about Dear ImGui:

// - FAQ https://dearimgui.com/faq

// - Getting Started https://dearimgui.com/getting-started

// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).

// - Introduction, links and more at the top of imgui.cpp

// CHANGELOG

// 2023-05-30: Renamed imgui_impl_sdlrenderer.h/.cpp to imgui_impl_sdlrenderer2.h/.cpp to accommodate for upcoming SDL3.

// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.

// 2021-12-21: Update SDL_RenderGeometryRaw() format to work with SDL 2.0.19.

// 2021-12-03: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.

// 2021-10-06: Backup and restore modified ClipRect/Viewport.

// 2021-09-21: Initial version.

#include "imgui.h"

#ifndef IMGUI_DISABLE

#include "imgui_impl_sdlrenderer2.h"

#include <stdint.h> // intptr_t

// Clang warnings with -Weverything

#if defined(__clang__)

#pragma clang diagnostic push

#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness

#endif

// SDL

#include <SDL.h>

#if !SDL_VERSION_ATLEAST(2,0,17)

#error This backend requires SDL 2.0.17+ because of SDL_RenderGeometry() function

#endif

// SDL_Renderer data

struct ImGui_ImplSDLRenderer2_Data

{

SDL_Renderer* SDLRenderer;

SDL_Texture* FontTexture;

ImGui_ImplSDLRenderer2_Data() { memset((void*)this, 0, sizeof(*this)); }

};

// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts

// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.

static ImGui_ImplSDLRenderer2_Data* ImGui_ImplSDLRenderer2_GetBackendData()

{

return ImGui::GetCurrentContext() ? (ImGui_ImplSDLRenderer2_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;

}

// Functions

bool ImGui_ImplSDLRenderer2_Init(SDL_Renderer* renderer)

{

ImGuiIO& io = ImGui::GetIO();

IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");

IM_ASSERT(renderer != nullptr && "SDL_Renderer not initialized!");

// Setup backend capabilities flags

ImGui_ImplSDLRenderer2_Data* bd = IM_NEW(ImGui_ImplSDLRenderer2_Data)();

io.BackendRendererUserData = (void*)bd;

io.BackendRendererName = "imgui_impl_sdlrenderer2";

io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.

bd->SDLRenderer = renderer;

return true;

}

void ImGui_ImplSDLRenderer2_Shutdown()

{

ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();

IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");

ImGuiIO& io = ImGui::GetIO();

ImGui_ImplSDLRenderer2_DestroyDeviceObjects();

io.BackendRendererName = nullptr;

io.BackendRendererUserData = nullptr;

io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;

IM_DELETE(bd);

}

static void ImGui_ImplSDLRenderer2_SetupRenderState()

{

ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();

// Clear out any viewports and cliprect set by the user

// FIXME: Technically speaking there are lots of other things we could backup/setup/restore during our render process.

SDL_RenderSetViewport(bd->SDLRenderer, nullptr);

SDL_RenderSetClipRect(bd->SDLRenderer, nullptr);

}

void ImGui_ImplSDLRenderer2_NewFrame()

{

ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();

IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplSDLRenderer2_Init()?");

if (!bd->FontTexture)

ImGui_ImplSDLRenderer2_CreateDeviceObjects();

}

void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data)

{

ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();

// If there's a scale factor set by the user, use that instead

// If the user has specified a scale factor to SDL_Renderer already via SDL_RenderSetScale(), SDL will scale whatever we pass

// to SDL_RenderGeometryRaw() by that scale factor. In that case we don't want to be also scaling it ourselves here.

float rsx = 1.0f;

float rsy = 1.0f;

SDL_RenderGetScale(bd->SDLRenderer, &rsx, &rsy);

ImVec2 render_scale;

render_scale.x = (rsx == 1.0f) ? draw_data->FramebufferScale.x : 1.0f;

render_scale.y = (rsy == 1.0f) ? draw_data->FramebufferScale.y : 1.0f;

// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)

int fb_width = (int)(draw_data->DisplaySize.x * render_scale.x);

int fb_height = (int)(draw_data->DisplaySize.y * render_scale.y);

if (fb_width == 0 || fb_height == 0)

return;

// Backup SDL_Renderer state that will be modified to restore it afterwards

struct BackupSDLRendererState

{

SDL_Rect Viewport;

bool ClipEnabled;

SDL_Rect ClipRect;

};

BackupSDLRendererState old = {};

old.ClipEnabled = SDL_RenderIsClipEnabled(bd->SDLRenderer) == SDL_TRUE;

SDL_RenderGetViewport(bd->SDLRenderer, &old.Viewport);

SDL_RenderGetClipRect(bd->SDLRenderer, &old.ClipRect);

// Will project scissor/clipping rectangles into framebuffer space

ImVec2 clip_off = draw_data->DisplayPos; // (0,0) unless using multi-viewports

ImVec2 clip_scale = render_scale;

// Render command lists

ImGui_ImplSDLRenderer2_SetupRenderState();

for (int n = 0; n < draw_data->CmdListsCount; n++)

{

const ImDrawList* cmd_list = draw_data->CmdLists[n];

const ImDrawVert* vtx_buffer = cmd_list->VtxBuffer.Data;

const ImDrawIdx* idx_buffer = cmd_list->IdxBuffer.Data;

for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)

{

const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];

if (pcmd->UserCallback)

{

// User callback, registered via ImDrawList::AddCallback()

// (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)

if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)

ImGui_ImplSDLRenderer2_SetupRenderState();

else

pcmd->UserCallback(cmd_list, pcmd);

}

else

{

// Project scissor/clipping rectangles into framebuffer space

ImVec2 clip_min((pcmd->ClipRect.x - clip_off.x) * clip_scale.x, (pcmd->ClipRect.y - clip_off.y) * clip_scale.y);

ImVec2 clip_max((pcmd->ClipRect.z - clip_off.x) * clip_scale.x, (pcmd->ClipRect.w - clip_off.y) * clip_scale.y);

if (clip_min.x < 0.0f) { clip_min.x = 0.0f; }

if (clip_min.y < 0.0f) { clip_min.y = 0.0f; }

if (clip_max.x > (float)fb_width) { clip_max.x = (float)fb_width; }

if (clip_max.y > (float)fb_height) { clip_max.y = (float)fb_height; }

if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)

continue;

SDL_Rect r = { (int)(clip_min.x), (int)(clip_min.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y) };

SDL_RenderSetClipRect(bd->SDLRenderer, &r);

const float* xy = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, pos));

const float* uv = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, uv));

#if SDL_VERSION_ATLEAST(2,0,19)

const SDL_Color* color = (const SDL_Color*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col)); // SDL 2.0.19+

#else

const int* color = (const int*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col)); // SDL 2.0.17 and 2.0.18

#endif

// Bind texture, Draw

SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();

SDL_RenderGeometryRaw(bd->SDLRenderer, tex,

xy, (int)sizeof(ImDrawVert),

color, (int)sizeof(ImDrawVert),

uv, (int)sizeof(ImDrawVert),

cmd_list->VtxBuffer.Size - pcmd->VtxOffset,

idx_buffer + pcmd->IdxOffset, pcmd->ElemCount, sizeof(ImDrawIdx));

}

}

}

// Restore modified SDL_Renderer state

SDL_RenderSetViewport(bd->SDLRenderer, &old.Viewport);

SDL_RenderSetClipRect(bd->SDLRenderer, old.ClipEnabled ? &old.ClipRect : nullptr);

}

// Called by Init/NewFrame/Shutdown

bool ImGui_ImplSDLRenderer2_CreateFontsTexture()

{

ImGuiIO& io = ImGui::GetIO();

ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();