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#include <stdio.h>
#include <SDL.h>
#include "api/api.h"
#include "rencache.h"
#include "renderer.h"
#ifdef _WIN32
#include <windows.h>
#elif __linux__
#include <unistd.h>
#include <SDL_syswm.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xresource.h>
#elif __APPLE__
#include <mach-o/dyld.h>
#endif
SDL_Window *window;
static double get_scale(void) {
#ifdef _WIN32
float dpi;
SDL_GetDisplayDPI(0, NULL, &dpi, NULL);
return dpi / 96.0;
#elif __linux__
SDL_SysWMinfo info;
XrmDatabase db;
XrmValue value;
char *type = NULL;
SDL_VERSION(&info.version);
if (!SDL_GetWindowWMInfo(window, &info)
|| info.subsystem != SDL_SYSWM_X11)
return 1.0;
char *resource = XResourceManagerString(info.info.x11.display);
if (resource == NULL)
return 1.0;
XrmInitialize();
db = XrmGetStringDatabase(resource);
if (XrmGetResource(db, "Xft.dpi", "String", &type, &value) == False
|| value.addr == NULL)
return 1.0;
return atof(value.addr) / 96.0;
#else
return 1.0;
#endif
}
static void get_exe_filename(char *buf, int sz) {
#if _WIN32
int len = GetModuleFileName(NULL, buf, sz - 1);
buf[len] = '\0';
#elif __linux__
char path[512];
sprintf(path, "/proc/%d/exe", getpid());
int len = readlink(path, buf, sz - 1);
buf[len] = '\0';
#elif __APPLE__
unsigned size = sz;
_NSGetExecutablePath(buf, &size);
#else
strcpy(buf, "./lite");
#endif
}
static void init_window_icon(void) {
#ifndef _WIN32
#include "../icon.inl"
(void) icon_rgba_len; /* unused */
SDL_Surface *surf = SDL_CreateRGBSurfaceFrom(
icon_rgba, 64, 64,
32, 64 * 4,
0x000000ff,
0x0000ff00,
0x00ff0000,
0xff000000);
SDL_SetWindowIcon(window, surf);
SDL_FreeSurface(surf);
#endif
}
#ifdef _WIN32
#define LITE_OS_HOME "USERPROFILE"
#define LITE_PATHSEP_PATTERN "\\\\"
#define LITE_NONPATHSEP_PATTERN "[^\\\\]+"
#else
#define LITE_OS_HOME "HOME"
#define LITE_PATHSEP_PATTERN "/"
#define LITE_NONPATHSEP_PATTERN "[^/]+"
#endif
#ifdef __APPLE__
void set_macos_bundle_resources(lua_State *L);
void enable_momentum_scroll();
#endif
int main(int argc, char **argv) {
#ifdef _WIN32
HINSTANCE lib = LoadLibrary("user32.dll");
int (*SetProcessDPIAware)() = (void*) GetProcAddress(lib, "SetProcessDPIAware");
SetProcessDPIAware();
#endif
SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS);
SDL_EnableScreenSaver();
SDL_EventState(SDL_DROPFILE, SDL_ENABLE);
atexit(SDL_Quit);
#ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* Available since 2.0.8 */
SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
#endif
#if SDL_VERSION_ATLEAST(2, 0, 5)
SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");
#endif
SDL_DisplayMode dm;
SDL_GetCurrentDisplayMode(0, &dm);
window = SDL_CreateWindow(
"", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, dm.w * 0.8, dm.h * 0.8,
SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI | SDL_WINDOW_HIDDEN);
init_window_icon();
ren_init(window);
lua_State *L;
init_lua:
L = luaL_newstate();
luaL_openlibs(L);
api_load_libs(L);
lua_newtable(L);
for (int i = 0; i < argc; i++) {
lua_pushstring(L, argv[i]);
lua_rawseti(L, -2, i + 1);
}
lua_setglobal(L, "ARGS");
lua_pushstring(L, SDL_GetPlatform());
lua_setglobal(L, "PLATFORM");
lua_pushnumber(L, get_scale());
lua_setglobal(L, "SCALE");
char exename[2048];
get_exe_filename(exename, sizeof(exename));
lua_pushstring(L, exename);
lua_setglobal(L, "EXEFILE");
#ifdef __APPLE__
set_macos_bundle_resources(L);
enable_momentum_scroll();
#endif
const char *init_lite_code = \
"local core\n"
"xpcall(function()\n"
" HOME = os.getenv('" LITE_OS_HOME "')\n"
" local exedir = EXEFILE:match(\"^(.*)" LITE_PATHSEP_PATTERN LITE_NONPATHSEP_PATTERN "$\")\n"
" local prefix = exedir:match(\"^(.*)" LITE_PATHSEP_PATTERN "bin$\")\n"
" dofile((MACOS_RESOURCES or (prefix and prefix .. '/share/lite-xl' or exedir .. '/data')) .. '/core/start.lua')\n"
" core = require('core')\n"
" core.init()\n"
" core.run()\n"
"end, function(err)\n"
" local error_dir\n"
" io.stdout:write('Error: '..tostring(err)..'\\n')\n"
" io.stdout:write(debug.traceback(nil, 4)..'\\n')\n"
" if core and core.on_error then\n"
" error_dir=USERDIR\n"
" pcall(core.on_error, err)\n"
" else\n"
" error_dir=system.absolute_path('.')\n"
" local fp = io.open('error.txt', 'wb')\n"
" fp:write('Error: ' .. tostring(err) .. '\\n')\n"
" fp:write(debug.traceback(nil, 4)..'\\n')\n"
" fp:close()\n"
" end\n"
" system.show_fatal_error('Lite XL internal error',\n"
" 'An internal error occurred in a critical part of the application.\\n\\n'..\n"
" 'Please verify the file \\\"error.txt\\\" in the directory '..error_dir)\n"
" os.exit(1)\n"
"end)\n"
"return core and core.restart_request\n";
if (luaL_loadstring(L, init_lite_code)) {
fprintf(stderr, "internal error when starting the application\n");
exit(1);
}
lua_pcall(L, 0, 1, 0);
if (lua_toboolean(L, -1)) {
lua_close(L);
goto init_lua;
}
lua_close(L);
ren_free_window_resources();
return EXIT_SUCCESS;
}
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