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4coder/platform_win32/win32_4ed.cpp

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/*
* Mr. 4th Dimention - Allen Webster
*
* 12.12.2014
*
* Win32 layer for 4coder
*
*/
// TOP
#define IS_PLAT_LAYER
#include "4ed_os_comp_cracking.h"
//
// Program setup
//
#define UNICODE
#define FPS 60
#define frame_useconds (1000000 / FPS)
#include "4ed_defines.h"
#include "4coder_API/version.h"
#define WINDOW_NAME L"4coder: " L_VERSION
#include <string.h>
#include "4coder_lib/4coder_utf8.h"
#if defined(FRED_SUPER)
# include "4coder_API/keycodes.h"
# include "4coder_API/style.h"
# define FSTRING_IMPLEMENTATION
# define FSTRING_C
# include "4coder_lib/4coder_string.h"
# include "4coder_lib/4coder_mem.h"
# include "4coder_API/types.h"
# include "4ed_os_custom_api.h"
#else
# include "4coder_default_bindings.cpp"
#endif
#include "4ed_math.h"
#include "4ed_system.h"
#include "4ed_log.h"
#include "4ed_rendering.h"
#include "4ed.h"
#include <Windows.h>
#include <GL/gl.h>
#include "win32_gl.h"
#define GL_TEXTURE_MAX_LEVEL 0x813D
//////////////////////////////
#include "win32_utf8.h"
#include "4ed_file_track.h"
#include "4ed_font_interface_to_os.h"
#include "4ed_system_shared.h"
#include "4ed_shared_thread_constants.h"
#include "win32_threading_wrapper.h"
//
// Win32_Vars structs
//
#define WM_4coder_ANIMATE (WM_USER + 0)
struct Control_Keys{
b8 l_ctrl;
b8 r_ctrl;
b8 l_alt;
b8 r_alt;
};
global Control_Keys null_control_keys = {0};
struct Win32_Input_Chunk_Transient{
Key_Input_Data key_data;
b8 mouse_l_press, mouse_l_release;
b8 mouse_r_press, mouse_r_release;
b8 out_of_window;
i8 mouse_wheel;
b8 trying_to_kill;
};
global Win32_Input_Chunk_Transient null_input_chunk_transient = {0};
struct Win32_Input_Chunk_Persistent{
i32 mouse_x, mouse_y;
b8 mouse_l, mouse_r;
Control_Keys controls;
b8 control_keys[MDFR_INDEX_COUNT];
};
struct Win32_Input_Chunk{
Win32_Input_Chunk_Transient trans;
Win32_Input_Chunk_Persistent pers;
};
struct Win32_Coroutine{
Coroutine coroutine;
Win32_Coroutine *next;
i32 done;
};
struct Win32_Vars{
App_Functions app;
Custom_API custom_api;
HMODULE app_code;
HMODULE custom;
Win32_Coroutine coroutine_data[18];
Win32_Coroutine *coroutine_free;
Win32_Input_Chunk input_chunk;
b32 lctrl_lalt_is_altgr;
b32 got_useful_event;
b32 full_screen;
b32 do_toggle;
WINDOWPLACEMENT GlobalWindowPosition;
b32 send_exit_signal;
HCURSOR cursor_ibeam;
HCURSOR cursor_arrow;
HCURSOR cursor_leftright;
HCURSOR cursor_updown;
u8 *clip_buffer;
u32 clip_max;
String clipboard_contents;
b32 next_clipboard_is_self;
DWORD clipboard_sequence;
HWND window_handle;
Render_Target target;
i32 dpi_x, dpi_y;
f64 count_per_usecond;
b32 first;
i32 running_cli;
u32 log_position;
};
////////////////////////////////
global Win32_Vars win32vars;
global System_Functions sysfunc;
global Application_Memory memory_vars;
global Plat_Settings plat_settings;
////////////////////////////////
#define SLASH '\\'
internal HANDLE
handle_type(Plat_Handle h){
HANDLE result;
memcpy(&result, &h, sizeof(result));
return(result);
}
internal Plat_Handle
handle_type(HANDLE h){
Plat_Handle result = {0};
memcpy(&result, &h, sizeof(h));
return(result);
}
////////////////////////////////
#include "win32_4ed_functions.cpp"
#include "4ed_shared_file_handling.cpp"
////////////////////////////////
internal void
system_schedule_step(){
PostMessage(win32vars.window_handle, WM_4coder_ANIMATE, 0, 0);
}
////////////////////////////////
#include "4ed_work_queues.cpp"
////////////////////////////////
// HACK(allen): Get this shit working more properly (look at pens)
internal void
win32_toggle_fullscreen(){
HWND Window = win32vars.window_handle;
LONG_PTR Style = GetWindowLongPtr(Window, GWL_STYLE);
if (Style & WS_OVERLAPPEDWINDOW){
MONITORINFO MonitorInfo = {sizeof(MONITORINFO)};
if(GetWindowPlacement(Window, &win32vars.GlobalWindowPosition) && GetMonitorInfo(MonitorFromWindow(Window, MONITOR_DEFAULTTOPRIMARY), &MonitorInfo))
{
SetWindowLongPtr(Window, GWL_STYLE, Style & ~WS_OVERLAPPEDWINDOW);
SetWindowPos(Window, HWND_TOP,
MonitorInfo.rcMonitor.left, MonitorInfo.rcMonitor.top,
MonitorInfo.rcMonitor.right - MonitorInfo.rcMonitor.left,
MonitorInfo.rcMonitor.bottom - MonitorInfo.rcMonitor.top,
SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
win32vars.full_screen = true;
}
}
else{
SetWindowLongPtr(Window, GWL_STYLE, Style | WS_OVERLAPPEDWINDOW);
SetWindowPlacement(Window, &win32vars.GlobalWindowPosition);
SetWindowPos(Window, 0, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
win32vars.full_screen = false;
}
}
// TODO(allen): add a "shown but auto-hides on timer" setting here.
internal
Sys_Show_Mouse_Cursor_Sig(system_show_mouse_cursor){
switch (show){
case MouseCursorShow_Never: ShowCursor(false); break;
case MouseCursorShow_Always: ShowCursor(true); break;
// TODO(allen): MouseCursor_HideWhenStill
}
}
internal
Sys_Set_Fullscreen_Sig(system_set_fullscreen){
b32 success = false;
// HACK(allen): Fix this shit.
// NOTE(allen): On windows we must be in stream mode to go fullscreen.
if (plat_settings.stream_mode){
// NOTE(allen): If the new value of full_screen does not match the current value,
// set toggle to true.
win32vars.do_toggle = (win32vars.full_screen != full_screen);
success = true;
}
return(success);
}
internal
Sys_Is_Fullscreen_Sig(system_is_fullscreen){
// NOTE(allen): Report the fullscreen status as it would be set at the beginning of the next frame.
// That is, take into account all fullscreen toggle requests that have come in already this frame.
// Read: "full_screen XOR do_toggle"
b32 result = (win32vars.full_screen != win32vars.do_toggle);
return(result);
}
internal
Sys_Send_Exit_Signal_Sig(system_send_exit_signal){
win32vars.send_exit_signal = true;
}
//
// Coroutines
//
internal Win32_Coroutine*
Win32AllocCoroutine(){
Win32_Coroutine *result = win32vars.coroutine_free;
Assert(result != 0);
win32vars.coroutine_free = result->next;
return(result);
}
internal void
Win32FreeCoroutine(Win32_Coroutine *data){
data->next = win32vars.coroutine_free;
win32vars.coroutine_free = data;
}
internal void CALL_CONVENTION
Win32CoroutineMain(void *arg_){
Win32_Coroutine *c = (Win32_Coroutine*)arg_;
c->coroutine.func(&c->coroutine);
c->done = 1;
Win32FreeCoroutine(c);
SwitchToFiber(c->coroutine.yield_handle);
}
internal
Sys_Create_Coroutine_Sig(system_create_coroutine){
Win32_Coroutine *c;
Coroutine *coroutine;
void *fiber;
c = Win32AllocCoroutine();
c->done = 0;
coroutine = &c->coroutine;
fiber = CreateFiber(0, Win32CoroutineMain, coroutine);
coroutine->plat_handle = handle_type(fiber);
coroutine->func = func;
return(coroutine);
}
internal
Sys_Launch_Coroutine_Sig(system_launch_coroutine){
Win32_Coroutine *c = (Win32_Coroutine*)coroutine;
void *fiber;
fiber = handle_type(coroutine->plat_handle);
coroutine->yield_handle = GetCurrentFiber();
coroutine->in = in;
coroutine->out = out;
SwitchToFiber(fiber);
if (c->done){
DeleteFiber(fiber);
Win32FreeCoroutine(c);
coroutine = 0;
}
return(coroutine);
}
Sys_Resume_Coroutine_Sig(system_resume_coroutine){
Win32_Coroutine *c = (Win32_Coroutine*)coroutine;
void *fiber;
Assert(c->done == 0);
coroutine->yield_handle = GetCurrentFiber();
coroutine->in = in;
coroutine->out = out;
fiber = handle_type(coroutine->plat_handle);
SwitchToFiber(fiber);
if (c->done){
DeleteFiber(fiber);
Win32FreeCoroutine(c);
coroutine = 0;
}
return(coroutine);
}
Sys_Yield_Coroutine_Sig(system_yield_coroutine){
SwitchToFiber(coroutine->yield_handle);
}
//
// Clipboard
//
internal
Sys_Post_Clipboard_Sig(system_post_clipboard){
if (OpenClipboard(win32vars.window_handle)){
EmptyClipboard();
HANDLE memory_handle;
memory_handle = GlobalAlloc(GMEM_MOVEABLE, str.size+1);
if (memory_handle){
char *dest = (char*)GlobalLock(memory_handle);
copy_fast_unsafe_cs(dest, str);
GlobalUnlock(memory_handle);
SetClipboardData(CF_TEXT, memory_handle);
win32vars.next_clipboard_is_self = 1;
}
CloseClipboard();
}
}
internal b32
win32_read_clipboard_contents(){
b32 result = false;
if (IsClipboardFormatAvailable(CF_UNICODETEXT)){
result = true;
if (OpenClipboard(win32vars.window_handle)){
HANDLE clip_data = GetClipboardData(CF_UNICODETEXT);
if (clip_data != 0){
Partition *scratch = &shared_vars.scratch;
Temp_Memory temp = begin_temp_memory(scratch);
u16 *clip_16 = (u16*)GlobalLock(clip_data);
if (clip_16 != 0){
u32 clip_16_len = 0;
for(;clip_16[clip_16_len];++clip_16_len);
// TODO(allen): Extend the buffer if it is too small.
b32 error = false;
u32 clip_8_len = (u32)utf16_to_utf8_minimal_checking(win32vars.clip_buffer, win32vars.clip_max-1, clip_16, clip_16_len, &error);
if (clip_8_len < win32vars.clip_max && !error){
win32vars.clip_buffer[clip_8_len] = 0;
win32vars.clipboard_contents = make_string_cap(win32vars.clip_buffer, clip_8_len, win32vars.clip_max);
}
GlobalUnlock(clip_data);
}
if (win32vars.clipboard_contents.str){
win32vars.clipboard_contents.size = str_size((char*)win32vars.clipboard_contents.str);
}
end_temp_memory(temp);
}
CloseClipboard();
}
}
return(result);
}
//
// Command Line Exectuion
//
internal
Sys_CLI_Call_Sig(system_cli_call){
char cmd[] = "c:\\windows\\system32\\cmd.exe";
char *env_variables = 0;
char command_line[2048];
String s = make_fixed_width_string(command_line);
copy_ss(&s, make_lit_string("/C "));
append_partial_sc(&s, script_name);
b32 success = terminate_with_null(&s);
if (success){
success = 0;
SECURITY_ATTRIBUTES sec_attributes = {};
HANDLE out_read;
HANDLE out_write;
sec_attributes.nLength = sizeof(SECURITY_ATTRIBUTES);
sec_attributes.bInheritHandle = TRUE;
if (CreatePipe(&out_read, &out_write, &sec_attributes, 0)){
if (SetHandleInformation(out_read, HANDLE_FLAG_INHERIT, 0)){
STARTUPINFO startup = {};
startup.cb = sizeof(STARTUPINFO);
startup.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
startup.hStdError = out_write;
startup.hStdOutput = out_write;
startup.wShowWindow = SW_HIDE;
PROCESS_INFORMATION info = {};
Assert(sizeof(Plat_Handle) >= sizeof(HANDLE));
if (CreateProcess_utf8((u8*)cmd, (u8*)command_line, 0, 0, TRUE, 0, env_variables, (u8*)path, &startup, &info)){
success = 1;
CloseHandle(info.hThread);
*(HANDLE*)&cli_out->proc = info.hProcess;
*(HANDLE*)&cli_out->out_read = out_read;
*(HANDLE*)&cli_out->out_write = out_write;
++win32vars.running_cli;
}
else{
CloseHandle(out_read);
CloseHandle(out_write);
*(HANDLE*)&cli_out->proc = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_read = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_write = INVALID_HANDLE_VALUE;
}
}
else{
// TODO(allen): failed SetHandleInformation
CloseHandle(out_read);
CloseHandle(out_write);
*(HANDLE*)&cli_out->proc = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_read = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_write = INVALID_HANDLE_VALUE;
}
}
else{
// TODO(allen): failed CreatePipe
}
}
return success;
}
struct CLI_Loop_Control{
u32 remaining_amount;
};
internal
Sys_CLI_Begin_Update_Sig(system_cli_begin_update){
Assert(sizeof(cli->scratch_space) >= sizeof(CLI_Loop_Control));
CLI_Loop_Control *loop = (CLI_Loop_Control*)cli->scratch_space;
loop->remaining_amount = 0;
}
internal
Sys_CLI_Update_Step_Sig(system_cli_update_step){
HANDLE handle = *(HANDLE*)&cli->out_read;
CLI_Loop_Control *loop = (CLI_Loop_Control*)cli->scratch_space;
b32 has_more = 0;
DWORD remaining = loop->remaining_amount;
u32 pos = 0;
DWORD read_amount = 0;
for (;;){
if (remaining == 0){
if (!PeekNamedPipe(handle, 0, 0, 0, &remaining, 0)) break;
if (remaining == 0) break;
}
if (remaining + pos < max){
has_more = 1;
ReadFile(handle, dest + pos, remaining, &read_amount, 0);
TentativeAssert(remaining == read_amount);
pos += remaining;
remaining = 0;
}
else{
has_more = 1;
ReadFile(handle, dest + pos, max - pos, &read_amount, 0);
TentativeAssert(max - pos == read_amount);
loop->remaining_amount = remaining - (max - pos);
pos = max;
break;
}
}
*amount = pos;
return(has_more);
}
internal
Sys_CLI_End_Update_Sig(system_cli_end_update){
b32 close_me = 0;
HANDLE proc = *(HANDLE*)&cli->proc;
DWORD result = 0;
if (WaitForSingleObject(proc, 0) == WAIT_OBJECT_0){
if (GetExitCodeProcess(proc, &result) == 0){
cli->exit = -1;
}
else{
cli->exit = (i32)result;
}
close_me = 1;
CloseHandle(*(HANDLE*)&cli->proc);
CloseHandle(*(HANDLE*)&cli->out_read);
CloseHandle(*(HANDLE*)&cli->out_write);
--win32vars.running_cli;
}
return(close_me);
}
//
// Linkage to Custom and Application
//
internal b32
Win32LoadAppCode(){
b32 result = false;
App_Get_Functions *get_funcs = 0;
win32vars.app_code = LoadLibraryA("4ed_app.dll");
if (win32vars.app_code){
get_funcs = (App_Get_Functions*)GetProcAddress(win32vars.app_code, "app_get_functions");
}
if (get_funcs){
result = true;
win32vars.app = get_funcs();
}
return(result);
}
#include "4ed_font_data.h"
#include "4ed_system_shared.cpp"
internal void
Win32LoadRenderCode(){
win32vars.target.push_clip = draw_push_clip;
win32vars.target.pop_clip = draw_pop_clip;
win32vars.target.push_piece = draw_push_piece;
}
//
// Helpers
//
global Key_Code keycode_lookup_table[255];
internal void
Win32KeycodeInit(){
keycode_lookup_table[VK_BACK] = key_back;
keycode_lookup_table[VK_DELETE] = key_del;
keycode_lookup_table[VK_UP] = key_up;
keycode_lookup_table[VK_DOWN] = key_down;
keycode_lookup_table[VK_LEFT] = key_left;
keycode_lookup_table[VK_RIGHT] = key_right;
keycode_lookup_table[VK_INSERT] = key_insert;
keycode_lookup_table[VK_HOME] = key_home;
keycode_lookup_table[VK_END] = key_end;
keycode_lookup_table[VK_PRIOR] = key_page_up;
keycode_lookup_table[VK_NEXT] = key_page_down;
keycode_lookup_table[VK_ESCAPE] = key_esc;
keycode_lookup_table[VK_F1] = key_f1;
keycode_lookup_table[VK_F2] = key_f2;
keycode_lookup_table[VK_F3] = key_f3;
keycode_lookup_table[VK_F4] = key_f4;
keycode_lookup_table[VK_F5] = key_f5;
keycode_lookup_table[VK_F6] = key_f6;
keycode_lookup_table[VK_F7] = key_f7;
keycode_lookup_table[VK_F8] = key_f8;
keycode_lookup_table[VK_F9] = key_f9;
keycode_lookup_table[VK_F10] = key_f10;
keycode_lookup_table[VK_F11] = key_f11;
keycode_lookup_table[VK_F12] = key_f12;
keycode_lookup_table[VK_F13] = key_f13;
keycode_lookup_table[VK_F14] = key_f14;
keycode_lookup_table[VK_F15] = key_f15;
keycode_lookup_table[VK_F16] = key_f16;
}
internal void
Win32RedrawScreen(HDC hdc){
launch_rendering(&sysfunc, &win32vars.target);
glFlush();
SwapBuffers(hdc);
}
internal void
Win32Resize(i32 width, i32 height){
if (width > 0 && height > 0){
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, width, height, 0, -1, 1);
glScissor(0, 0, width, height);
win32vars.target.width = width;
win32vars.target.height = height;
}
}
internal void*
win32_load_gl_always(char *name, HMODULE module){
void *p = (void *)wglGetProcAddress(name), *r = 0;
if(p == 0 ||
(p == (void*)0x1) || (p == (void*)0x2) || (p == (void*)0x3) ||
(p == (void*)-1) ){
r = (void *)GetProcAddress(module, name);
}
else{
r = p;
}
return(r);
}
internal void CALL_CONVENTION
OpenGLDebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const char *message, const void *userParam){
OutputDebugStringA(message);
OutputDebugStringA("\n");
}
internal void
Win32InitGL(){
// GL context initialization
{
PIXELFORMATDESCRIPTOR format;
format.nSize = sizeof(format);
format.nVersion = 1;
format.dwFlags = PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW;
format.iPixelType = PFD_TYPE_RGBA;
format.cColorBits = 32;
format.cRedBits = 0;
format.cRedShift = 0;
format.cGreenBits = 0;
format.cGreenShift = 0;
format.cBlueBits = 0;
format.cBlueShift = 0;
format.cAlphaBits = 0;
format.cAlphaShift = 0;
format.cAccumBits = 0;
format.cAccumRedBits = 0;
format.cAccumGreenBits = 0;
format.cAccumBlueBits = 0;
format.cAccumAlphaBits = 0;
format.cDepthBits = 24;
format.cStencilBits = 8;
format.cAuxBuffers = 0;
format.iLayerType = PFD_MAIN_PLANE;
format.bReserved = 0;
format.dwLayerMask = 0;
format.dwVisibleMask = 0;
format.dwDamageMask = 0;
HDC dc = GetDC(win32vars.window_handle);
Assert(dc);
int format_id = ChoosePixelFormat(dc, &format);
Assert(format_id != 0);
BOOL success = SetPixelFormat(dc, format_id, &format);
Assert(success == TRUE); AllowLocal(success);
HGLRC glcontext = wglCreateContext(dc);
wglMakeCurrent(dc, glcontext);
HMODULE module = LoadLibraryA("opengl32.dll");
AllowLocal(module);
wglCreateContextAttribsARB_Function *wglCreateContextAttribsARB = 0;
wglCreateContextAttribsARB = (wglCreateContextAttribsARB_Function*)
win32_load_gl_always("wglCreateContextAttribsARB", module);
wglChoosePixelFormatARB_Function *wglChoosePixelFormatARB = 0;
wglChoosePixelFormatARB = (wglChoosePixelFormatARB_Function*)
win32_load_gl_always("wglChoosePixelFormatARB", module);
if (wglCreateContextAttribsARB != 0 && wglChoosePixelFormatARB != 0){
const int choosePixel_attribList[] =
{
WGL_DRAW_TO_WINDOW_ARB, TRUE,
WGL_SUPPORT_OPENGL_ARB, TRUE,
//WGL_DOUBLE_BUFFER_ARB, GL_TRUE,
WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB,
WGL_COLOR_BITS_ARB, 32,
WGL_DEPTH_BITS_ARB, 24,
WGL_STENCIL_BITS_ARB, 8,
0,
};
i32 extended_format_id = 0;
u32 num_formats = 0;
BOOL result = wglChoosePixelFormatARB(dc, choosePixel_attribList, 0, 1, &extended_format_id, &num_formats);
if (result != 0 && num_formats > 0){
const int createContext_attribList[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
WGL_CONTEXT_MINOR_VERSION_ARB, 2,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
0
};
if (extended_format_id == format_id){
HGLRC extended_context = wglCreateContextAttribsARB(dc, 0, createContext_attribList);
if (extended_context){
wglMakeCurrent(dc, extended_context);
wglDeleteContext(glcontext);
glcontext = extended_context;
}
}
}
}
#if (defined(BUILD_X64) && 1) || (defined(BUILD_X86) && 0)
#if defined(FRED_INTERNAL)
// NOTE(casey): This slows down GL but puts error messages to
// the debug console immediately whenever you do something wrong
glDebugMessageCallback_type *glDebugMessageCallback =
(glDebugMessageCallback_type *)win32_load_gl_always("glDebugMessageCallback", module);
glDebugMessageControl_type *glDebugMessageControl =
(glDebugMessageControl_type *)win32_load_gl_always("glDebugMessageControl", module);
if(glDebugMessageCallback != 0 && glDebugMessageControl != 0)
{
glDebugMessageCallback(OpenGLDebugCallback, 0);
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, 0, GL_TRUE);
glEnable(GL_DEBUG_OUTPUT);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
}
#endif
#endif
ReleaseDC(win32vars.window_handle, dc);
}
glEnable(GL_TEXTURE_2D);
glEnable(GL_SCISSOR_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
internal void
Win32SetCursorFromUpdate(Application_Mouse_Cursor cursor){
switch (cursor){
case APP_MOUSE_CURSOR_ARROW:
SetCursor(win32vars.cursor_arrow); break;
case APP_MOUSE_CURSOR_IBEAM:
SetCursor(win32vars.cursor_ibeam); break;
case APP_MOUSE_CURSOR_LEFTRIGHT:
SetCursor(win32vars.cursor_leftright); break;
case APP_MOUSE_CURSOR_UPDOWN:
SetCursor(win32vars.cursor_updown); break;
}
}
internal u64
Win32HighResolutionTime(){
u64 result = 0;
LARGE_INTEGER t;
if (QueryPerformanceCounter(&t)){
result = (u64) (t.QuadPart / win32vars.count_per_usecond);
}
return(result);
}
internal LRESULT
Win32Callback(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam){
LRESULT result = 0;
switch (uMsg){
case WM_MENUCHAR:break;
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
case WM_KEYDOWN:
case WM_KEYUP:
{
switch (wParam){
case VK_CONTROL:case VK_LCONTROL:case VK_RCONTROL:
case VK_MENU:case VK_LMENU:case VK_RMENU:
case VK_SHIFT:case VK_LSHIFT:case VK_RSHIFT:
{
Control_Keys *controls = &win32vars.input_chunk.pers.controls;
b8 *control_keys = win32vars.input_chunk.pers.control_keys;
b8 down = ((lParam & Bit_31)?(0):(1));
b8 is_right = ((lParam & Bit_24)?(1):(0));
if (wParam != 255){
switch (wParam){
case VK_SHIFT:
{
control_keys[MDFR_SHIFT_INDEX] = down;
}break;
case VK_CONTROL:
{
if (is_right) controls->r_ctrl = down;
else controls->l_ctrl = down;
}break;
case VK_MENU:
{
if (is_right) controls->r_alt = down;
else controls->l_alt = down;
}break;
}
b8 ctrl = (controls->r_ctrl || (controls->l_ctrl && !controls->r_alt));
b8 alt = (controls->l_alt || (controls->r_alt && !controls->l_ctrl));
if (win32vars.lctrl_lalt_is_altgr){
if (controls->l_alt && controls->l_ctrl){
ctrl = 0;
alt = 0;
}
}
control_keys[MDFR_CONTROL_INDEX] = ctrl;
control_keys[MDFR_ALT_INDEX] = alt;
}
}break;
default:
{
b8 current_state = ((lParam & Bit_31)?(0):(1));
if (current_state){
Key_Code key = keycode_lookup_table[(u8)wParam];
if (key != 0){
i32 *count = &win32vars.input_chunk.trans.key_data.count;
Key_Event_Data *data = win32vars.input_chunk.trans.key_data.keys;
b8 *control_keys = win32vars.input_chunk.pers.control_keys;
i32 control_keys_size = sizeof(win32vars.input_chunk.pers.control_keys);
Assert(*count < KEY_INPUT_BUFFER_SIZE);
data[*count].character = 0;
data[*count].character_no_caps_lock = 0;
data[*count].keycode = key;
memcpy(data[*count].modifiers, control_keys, control_keys_size);
++(*count);
win32vars.got_useful_event = true;
}
}
}break;
}/* switch */
}break;
case WM_CHAR: case WM_SYSCHAR: case WM_UNICHAR:
{
u16 character = (u16)wParam;
if (character == '\r'){
character = '\n';
}
else if (character == '\t'){
character = '\t';
}
else if (character < 32 || character == 127){
break;
}
u16 character_no_caps_lock = character;
i32 *count = &win32vars.input_chunk.trans.key_data.count;
Key_Event_Data *data = win32vars.input_chunk.trans.key_data.keys;
b8 *control_keys = win32vars.input_chunk.pers.control_keys;
i32 control_keys_size = sizeof(win32vars.input_chunk.pers.control_keys);
BYTE state[256];
GetKeyboardState(state);
if (state[VK_CAPITAL]){
if (character_no_caps_lock >= 'a' && character_no_caps_lock <= 'z'){
character_no_caps_lock -= (u8)('a' - 'A');
}
else if (character_no_caps_lock >= 'A' && character_no_caps_lock <= 'Z'){
character_no_caps_lock += (u8)('a' - 'A');
}
}
Assert(*count < KEY_INPUT_BUFFER_SIZE);
data[*count].character = character;
data[*count].character_no_caps_lock = character_no_caps_lock;
data[*count].keycode = character_no_caps_lock;
memcpy(data[*count].modifiers, control_keys, control_keys_size);
++(*count);
win32vars.got_useful_event = true;
}break;
case WM_MOUSEMOVE:
{
i32 new_x = LOWORD(lParam);
i32 new_y = HIWORD(lParam);
if (new_x != win32vars.input_chunk.pers.mouse_x || new_y != win32vars.input_chunk.pers.mouse_y){
win32vars.input_chunk.pers.mouse_x = new_x;
win32vars.input_chunk.pers.mouse_y = new_y;
win32vars.got_useful_event = true;
}
}break;
case WM_MOUSEWHEEL:
{
win32vars.got_useful_event = true;
i32 rotation = GET_WHEEL_DELTA_WPARAM(wParam);
if (rotation > 0){
win32vars.input_chunk.trans.mouse_wheel = 1;
}
else{
win32vars.input_chunk.trans.mouse_wheel = -1;
}
}break;
case WM_LBUTTONDOWN:
{
win32vars.got_useful_event = true;
win32vars.input_chunk.trans.mouse_l_press = 1;
win32vars.input_chunk.pers.mouse_l = 1;
}break;
case WM_RBUTTONDOWN:
{
win32vars.got_useful_event = true;
win32vars.input_chunk.trans.mouse_r_press = 1;
win32vars.input_chunk.pers.mouse_r = 1;
}break;
case WM_LBUTTONUP:
{
win32vars.got_useful_event = true;
win32vars.input_chunk.trans.mouse_l_release = 1;
win32vars.input_chunk.pers.mouse_l = 0;
}break;
case WM_RBUTTONUP:
{
win32vars.got_useful_event = true;
win32vars.input_chunk.trans.mouse_r_release = 1;
win32vars.input_chunk.pers.mouse_r = 0;
}break;
case WM_KILLFOCUS:
case WM_SETFOCUS:
{
win32vars.got_useful_event = true;
win32vars.input_chunk.pers.mouse_l = 0;
win32vars.input_chunk.pers.mouse_r = 0;
for (i32 i = 0; i < MDFR_INDEX_COUNT; ++i){
win32vars.input_chunk.pers.control_keys[i] = 0;
}
win32vars.input_chunk.pers.controls = null_control_keys;
}break;
case WM_SIZE:
{
win32vars.got_useful_event = true;
i32 new_width = LOWORD(lParam);
i32 new_height = HIWORD(lParam);
Win32Resize(new_width, new_height);
}break;
case WM_DISPLAYCHANGE:
{
win32vars.got_useful_event = true;
LONG_PTR style = GetWindowLongPtr(hwnd, GWL_STYLE);
if (!(style & WS_OVERLAPPEDWINDOW)){
MONITORINFO monitor_info = {sizeof(MONITORINFO)};
if(GetMonitorInfo(MonitorFromWindow(hwnd, MONITOR_DEFAULTTOPRIMARY), &monitor_info))
{
SetWindowPos(hwnd, HWND_TOP,
monitor_info.rcMonitor.left, monitor_info.rcMonitor.top,
monitor_info.rcMonitor.right - monitor_info.rcMonitor.left,
monitor_info.rcMonitor.bottom - monitor_info.rcMonitor.top,
SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
}
}
}break;
case WM_PAINT:
{
win32vars.got_useful_event = true;
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hwnd, &ps);
Win32RedrawScreen(hdc);
EndPaint(hwnd, &ps);
}break;
case WM_CLOSE:
case WM_DESTROY:
{
win32vars.got_useful_event = true;
win32vars.input_chunk.trans.trying_to_kill = 1;
}break;
case WM_4coder_ANIMATE:
{
win32vars.got_useful_event = true;
}break;
case WM_CANCELMODE:
{
result = DefWindowProc(hwnd, uMsg, wParam, lParam);
}break;
default:
{
result = DefWindowProc(hwnd, uMsg, wParam, lParam);
}break;
}
return(result);
}
#include "4ed_link_system_functions.cpp"
int CALL_CONVENTION
WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){
i32 argc = __argc;
char **argv = __argv;
memset(&win32vars, 0, sizeof(win32vars));
win32vars.GlobalWindowPosition.length = sizeof(win32vars.GlobalWindowPosition);
system_init_threaded_work_system();
//
// Coroutines
//
ConvertThreadToFiber(0);
win32vars.coroutine_free = win32vars.coroutine_data;
for (i32 i = 0; i+1 < ArrayCount(win32vars.coroutine_data); ++i){
win32vars.coroutine_data[i].next = &win32vars.coroutine_data[i + 1];
}
//
// Memory Initialization
//
LPVOID base;
#if defined(FRED_INTERNAL)
#if defined(BUILD_X64)
base = (LPVOID)TB(1);
#elif defined(BUILD_X86)
base = (LPVOID)MB(96);
#endif
#else
base = (LPVOID)0;
#endif
memory_vars.vars_memory_size = MB(2);
memory_vars.vars_memory = VirtualAlloc(base, memory_vars.vars_memory_size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
#if defined(FRED_INTERNAL)
#if defined(BUILD_X64)
base = (LPVOID)TB(2);
#elif defined(BUILD_X86)
base = (LPVOID)MB(98);
#endif
#else
base = (LPVOID)0;
#endif
memory_vars.target_memory_size = MB(512);
memory_vars.target_memory = VirtualAlloc(base, memory_vars.target_memory_size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
memory_vars.user_memory_size = MB(2);
memory_vars.user_memory = system_memory_allocate(memory_vars.user_memory_size);
memory_vars.debug_memory_size = MB(512);
memory_vars.debug_memory = system_memory_allocate(memory_vars.debug_memory_size);
win32vars.target.max = MB(1);
win32vars.target.push_buffer = (char*)system_memory_allocate(win32vars.target.max);
if (memory_vars.vars_memory == 0 || memory_vars.target_memory == 0 || memory_vars.user_memory == 0 || win32vars.target.push_buffer == 0){
exit(1);
}
//
// System and Application Layer Linkage
//
if (!Win32LoadAppCode()){
exit(1);
}
link_system_code(&sysfunc);
Win32LoadRenderCode();
//
// Shared Systems Init
//
init_shared_vars();
//
// Read Command Line
//
LOG("Reading command line\n");
DWORD required = (GetCurrentDirectory(0, 0)*4) + 1;
u8 *current_directory_mem = (u8*)system_memory_allocate(required);
DWORD written = GetCurrentDirectory_utf8(required, current_directory_mem);
String current_directory = make_string_cap(current_directory_mem, written, required);
terminate_with_null(&current_directory);
replace_char(&current_directory, '\\', '/');
Command_Line_Parameters clparams;
clparams.argv = argv;
clparams.argc = argc;
char **files = 0;
i32 *file_count = 0;
win32vars.app.read_command_line(&sysfunc, &memory_vars, current_directory, &plat_settings, &files, &file_count, clparams);
sysshared_filter_real_files(files, file_count);
LOG("Loaded system code, read command line.\n");
//
// Custom Layer Linkage
//
#if defined(FRED_SUPER)
char *custom_file_default = "custom_4coder.dll";
char *custom_file = 0;
if (plat_settings.custom_dll){
custom_file = plat_settings.custom_dll;
}
else{
custom_file = custom_file_default;
}
LOGF("Trying to load custom DLL: %s\n", custom_file);
win32vars.custom = LoadLibraryA(custom_file);
if (!win32vars.custom && custom_file != custom_file_default){
if (!plat_settings.custom_dll_is_strict){
LOGF("Trying to load custom DLL: %s\n", custom_file_default);
win32vars.custom = LoadLibraryA(custom_file_default);
}
}
if (win32vars.custom){
win32vars.custom_api.get_alpha_4coder_version = (_Get_Version_Function*)GetProcAddress(win32vars.custom, "get_alpha_4coder_version");
if (win32vars.custom_api.get_alpha_4coder_version == 0 || win32vars.custom_api.get_alpha_4coder_version(MAJOR, MINOR, PATCH) == 0){
MessageBox_utf8(0, (u8*)"Error: The application and custom version numbers don't match.\n", (u8*)"Error",0);
exit(1);
}
win32vars.custom_api.get_bindings = (Get_Binding_Data_Function*)GetProcAddress(win32vars.custom, "get_bindings");
}
if (win32vars.custom_api.get_bindings == 0){
MessageBox_utf8(0, (u8*)"Error: The custom dll is missing.\n", (u8*)"Error", 0);
exit(1);
}
#else
win32vars.custom_api.get_bindings = (Get_Binding_Data_Function*)get_bindings;
#endif
//
// Window and GL Initialization
//
WNDCLASS window_class = {0};
window_class.style = CS_HREDRAW|CS_VREDRAW;
window_class.lpfnWndProc = (WNDPROC)(Win32Callback);
window_class.hInstance = hInstance;
window_class.lpszClassName = L"4coder-win32-wndclass";
window_class.hIcon = LoadIcon(hInstance, L"main");
if (!RegisterClass(&window_class)){
exit(1);
}
RECT window_rect = {0};
if (plat_settings.set_window_size){
window_rect.right = plat_settings.window_w;
window_rect.bottom = plat_settings.window_h;
}
else{
window_rect.right = 800;
window_rect.bottom = 600;
}
if (!AdjustWindowRect(&window_rect, WS_OVERLAPPEDWINDOW, false)){
LOG("Could not get adjusted window.\n");
}
i32 window_x = CW_USEDEFAULT;
i32 window_y = CW_USEDEFAULT;
if (plat_settings.set_window_pos){
window_x = plat_settings.window_x;
window_y = plat_settings.window_y;
LOGF("Setting window position (%d, %d)\n", window_x, window_y);
}
i32 window_style = WS_OVERLAPPEDWINDOW;
if (!plat_settings.fullscreen_window && plat_settings.maximize_window){
window_style |= WS_MAXIMIZE;
}
LOG("Creating window... ");
win32vars.window_handle = CreateWindow(window_class.lpszClassName, WINDOW_NAME, window_style, window_x, window_y, window_rect.right - window_rect.left, window_rect.bottom - window_rect.top, 0, 0, hInstance, 0);
if (win32vars.window_handle == 0){
LOG("Failed\n");
exit(1);
}
else{
LOG("Success\n");
}
{
HDC hdc = GetDC(win32vars.window_handle);
// TODO(allen): not Windows XP compatible, how do I handle that?
SetProcessDPIAware();
win32vars.dpi_x = GetDeviceCaps(hdc, LOGPIXELSX);
win32vars.dpi_y = GetDeviceCaps(hdc, LOGPIXELSY);
GetClientRect(win32vars.window_handle, &window_rect);
ReleaseDC(win32vars.window_handle, hdc);
}
Win32InitGL();
Win32Resize(window_rect.right - window_rect.left, window_rect.bottom - window_rect.top);
//
// Font System Init
//
LOG("Initializing fonts\n");
system_font_init(&sysfunc.font, 0, 0, plat_settings.font_size, plat_settings.use_hinting);
//
// Misc System Initializations
//
LOG("Initializing clipboard\n");
win32vars.clip_max = KB(16);
win32vars.clip_buffer = (u8*)system_memory_allocate(win32vars.clip_max);
win32vars.clipboard_sequence = GetClipboardSequenceNumber();
if (win32vars.clipboard_sequence == 0){
system_post_clipboard(make_lit_string(""));
win32vars.clipboard_sequence = GetClipboardSequenceNumber();
win32vars.next_clipboard_is_self = 0;
if (win32vars.clipboard_sequence == 0){
OutputDebugStringA("Failure while initializing clipboard\n");
}
}
else{
win32_read_clipboard_contents();
}
Win32KeycodeInit();
win32vars.cursor_ibeam = LoadCursor(NULL, IDC_IBEAM);
win32vars.cursor_arrow = LoadCursor(NULL, IDC_ARROW);
win32vars.cursor_leftright = LoadCursor(NULL, IDC_SIZEWE);
win32vars.cursor_updown = LoadCursor(NULL, IDC_SIZENS);
LARGE_INTEGER f;
if (QueryPerformanceFrequency(&f)){
win32vars.count_per_usecond = (f32)f.QuadPart / 1000000.f;
LOGF("Got performance frequency %f\n", win32vars.count_per_usecond);
}
else{
// NOTE(allen): Just guess.
win32vars.count_per_usecond = 1.f;
LOG("Did not get performance frequency, just guessing with 1.\n");
}
Assert(win32vars.count_per_usecond > 0.f);
//
// Main Loop
//
LOG("Initializing application variables\n");
win32vars.app.init(&sysfunc, &win32vars.target, &memory_vars, win32vars.clipboard_contents, current_directory, win32vars.custom_api);
system_memory_free(current_directory.str, 0);
b32 keep_running = true;
win32vars.first = true;
timeBeginPeriod(1);
if (plat_settings.fullscreen_window){
win32_toggle_fullscreen();
}
SetForegroundWindow(win32vars.window_handle);
SetActiveWindow(win32vars.window_handle);
ShowWindow(win32vars.window_handle, SW_SHOW);
LOG("Beginning main loop\n");
u64 timer_start = Win32HighResolutionTime();
system_acquire_lock(FRAME_LOCK);
MSG msg;
for (;keep_running;){
// TODO(allen): Find a good way to wait on a pipe
// without interfering with the reading process
// Looks like we can ReadFile with a size of zero
// in an IOCP for this effect.
// NOTE(allen): When we're in stream mode we don't have
// double buffering so we need to move ahead and call
// the first step right away so it will render into the
// window. With double buffering this is not an issue
// for reasons I cannot at all comprehend.
if (!(win32vars.first && plat_settings.stream_mode)){
system_release_lock(FRAME_LOCK);
if (win32vars.running_cli == 0){
win32vars.got_useful_event = false;
}
b32 get_more_messages = true;
do{
if (win32vars.got_useful_event == 0){
get_more_messages = GetMessage(&msg, 0, 0, 0);
}
else{
get_more_messages = PeekMessage(&msg, 0, 0, 0, 1);
}
if (get_more_messages){
if (msg.message == WM_QUIT){
keep_running = false;
}else{
b32 treat_normally = true;
if (msg.message == WM_KEYDOWN || msg.message == WM_SYSKEYDOWN){
switch (msg.wParam){
case VK_CONTROL:case VK_LCONTROL:case VK_RCONTROL:
case VK_MENU:case VK_LMENU:case VK_RMENU:
case VK_SHIFT:case VK_LSHIFT:case VK_RSHIFT:break;
default: treat_normally = false; break;
}
}
if (treat_normally){
TranslateMessage(&msg);
DispatchMessage(&msg);
}
else{
Control_Keys *controls = &win32vars.input_chunk.pers.controls;
b8 ctrl = (controls->r_ctrl || (controls->l_ctrl && !controls->r_alt));
b8 alt = (controls->l_alt || (controls->r_alt && !controls->l_ctrl));
if (win32vars.lctrl_lalt_is_altgr){
if (controls->l_alt && controls->l_ctrl){
ctrl = 0;
alt = 0;
}
}
BYTE ctrl_state = 0, alt_state = 0;
BYTE state[256];
if (ctrl || alt){
GetKeyboardState(state);
if (ctrl){
ctrl_state = state[VK_CONTROL];
state[VK_CONTROL] = 0;
}
if (alt){
alt_state = state[VK_MENU];
state[VK_MENU] = 0;
}
SetKeyboardState(state);
TranslateMessage(&msg);
DispatchMessage(&msg);
if (ctrl){
state[VK_CONTROL] = ctrl_state;
}
if (alt){
state[VK_MENU] = alt_state;
}
SetKeyboardState(state);
}
else{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
}
}
}while(get_more_messages);
system_acquire_lock(FRAME_LOCK);
}
POINT mouse_point;
if (GetCursorPos(&mouse_point) &&
ScreenToClient(win32vars.window_handle, &mouse_point)){
i32_Rect screen;
screen.x0 = 0;
screen.y0 = 0;
screen.x1 = win32vars.target.width;
screen.y1 = win32vars.target.height;
i32 mx = mouse_point.x;
i32 my = mouse_point.y;
b32 is_hit = false;
if (mx >= screen.x0 && mx < screen.x1 && my >= screen.y0 && my < screen.y1){
is_hit = true;
}
if (!is_hit){
win32vars.input_chunk.trans.out_of_window = 1;
}
win32vars.input_chunk.pers.mouse_x = mouse_point.x;
win32vars.input_chunk.pers.mouse_y = mouse_point.y;
}
else{
win32vars.input_chunk.trans.out_of_window = 1;
}
Win32_Input_Chunk input_chunk = win32vars.input_chunk;
win32vars.input_chunk.trans = null_input_chunk_transient;
input_chunk.pers.control_keys[MDFR_CAPS_INDEX] = GetKeyState(VK_CAPITAL) & 0x1;
win32vars.clipboard_contents = null_string;
if (win32vars.clipboard_sequence != 0){
DWORD new_number = GetClipboardSequenceNumber();
if (new_number != win32vars.clipboard_sequence){
win32vars.clipboard_sequence = new_number;
if (win32vars.next_clipboard_is_self){
win32vars.next_clipboard_is_self = 0;
}
else{
win32_read_clipboard_contents();
}
}
}
Application_Step_Input input = {0};
input.first_step = win32vars.first;
// NOTE(allen): The expected dt given the frame limit in seconds.
input.dt = frame_useconds / 1000000.f;
input.keys = input_chunk.trans.key_data;
input.mouse.out_of_window = input_chunk.trans.out_of_window;
input.mouse.l = input_chunk.pers.mouse_l;
input.mouse.press_l = input_chunk.trans.mouse_l_press;
input.mouse.release_l = input_chunk.trans.mouse_l_release;
input.mouse.r = input_chunk.pers.mouse_r;
input.mouse.press_r = input_chunk.trans.mouse_r_press;
input.mouse.release_r = input_chunk.trans.mouse_r_release;
input.mouse.wheel = input_chunk.trans.mouse_wheel;
input.mouse.x = input_chunk.pers.mouse_x;
input.mouse.y = input_chunk.pers.mouse_y;
input.clipboard = win32vars.clipboard_contents;
Application_Step_Result result = {(Application_Mouse_Cursor)0};
result.mouse_cursor_type = APP_MOUSE_CURSOR_DEFAULT;
result.lctrl_lalt_is_altgr = win32vars.lctrl_lalt_is_altgr;
result.trying_to_kill = input_chunk.trans.trying_to_kill;
result.perform_kill = 0;
if (win32vars.send_exit_signal){
result.trying_to_kill = true;
win32vars.send_exit_signal = false;
}
win32vars.app.step(&sysfunc, &win32vars.target, &memory_vars, &input, &result, clparams);
if (result.perform_kill){
keep_running = false;
}
if (win32vars.do_toggle){
win32_toggle_fullscreen();
win32vars.do_toggle = false;
}
Win32SetCursorFromUpdate(result.mouse_cursor_type);
win32vars.lctrl_lalt_is_altgr = result.lctrl_lalt_is_altgr;
HDC hdc = GetDC(win32vars.window_handle);
Win32RedrawScreen(hdc);
ReleaseDC(win32vars.window_handle, hdc);
win32vars.first = 0;
if (result.animating){
system_schedule_step();
}
flush_thread_group(BACKGROUND_THREADS);
u64 timer_end = Win32HighResolutionTime();
u64 end_target = timer_start + frame_useconds;
system_release_lock(FRAME_LOCK);
while (timer_end < end_target){
DWORD samount = (DWORD)((end_target - timer_end) / 1000);
if (samount > 0) Sleep(samount);
timer_end = Win32HighResolutionTime();
}
system_acquire_lock(FRAME_LOCK);
timer_start = Win32HighResolutionTime();
}
return(0);
}
#include "4ed_shared_fonts.cpp"
#include "win32_4ed_file_track.cpp"
#include "4ed_font_static_functions.cpp"
#include "win32_utf8.cpp"
#if 0
// NOTE(allen): In case I want to switch back to a console application at some point.
int main(int argc, char **argv){
HINSTANCE hInstance = GetModuleHandle(0);
}
#endif
// BOTTOM
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