4coder/platform_mac/mac_4ed.m

720 lines
19 KiB
Objective-C

/*
* Mr. 4th Dimention - Allen Webster
*
* 28.06.2017
*
* Mac Objective C layer for 4coder
*
*/
// TOP
#define inline internal
#include "4ed_defines.h"
#undef inline
#include "4coder_API/version.h"
#include "4coder_API/keycodes.h"
#include "4ed_cursor_codes.h"
#define WINDOW_NAME "4coder " VERSION
#undef internal
#undef global
#undef external
#define external
#include "osx_objective_c_to_cpp_links.h"
#include <CoreServices/CoreServices.h>
#import <Cocoa/Cocoa.h>
#import <CoreVideo/CVDisplayLink.h>
#import <IOKit/hid/IOHIDLib.h>
#import <OpenGL/OpenGL.h>
#import <OpenGL/gl.h>
#include <sys/types.h>
#include <sys/event.h>
#include <sys/time.h>
#include <time.h>
#include <string.h>
void
osx_post_to_clipboard(char *str){
NSPasteboard *board = [NSPasteboard generalPasteboard];
NSString *utf8_type = @"public.utf8-plain-text";
NSArray<NSString*> *typesArray = [NSArray arrayWithObjects: utf8_type, nil];
[board declareTypes:typesArray owner:nil];
NSString *paste_string = [NSString stringWithUTF8String:str];
[board setString:paste_string forType:utf8_type];
osx_objc.just_posted_to_clipboard = true;
}
void
osx_error_dialogue(char *str){
NSAlert *alert = [[NSAlert alloc] init];
[alert addButtonWithTitle:@"OK"];
NSString *text = [NSString stringWithUTF8String:str];
[alert setMessageText:text];
[alert setAlertStyle:NSCriticalAlertStyle];
[alert runModal];
}
//
// Entry point, OpenGL window setup.
//
@interface AppDelegate : NSObject <NSApplicationDelegate>
@end
@interface My4coderView : NSOpenGLView{
@public
//CVDisplayLinkRef displayLink;
}
- (void)requestDisplay;
- (void)checkClipboard;
- (CVReturn)getFrame;
- (void)drawRect:(NSRect)bounds;
@end
#define DISPLINK_SIG(n) CVReturn n(CVDisplayLinkRef link, const CVTimeStamp *now, const CVTimeStamp *output, CVOptionFlags flags_in, CVOptionFlags *flags_out, void *context)
static DISPLINK_SIG(osx_display_link);
@implementation My4coderView
- (void)keyDown:(NSEvent *)event{
NSString *real = [event charactersIgnoringModifiers];
NSString *with_mods = [event characters];
b32 is_dead_key = false;
if (real && !with_mods){
is_dead_key = true;
}
OSX_Keyboard_Modifiers mods = {0};
NSEventModifierFlags flags = [NSEvent modifierFlags];
mods.shift = ((flags & NSEventModifierFlagShift) != 0);
mods.command = ((flags & NSEventModifierFlagCommand) != 0);
mods.control = ((flags & NSEventModifierFlagControl) != 0);
mods.option = ((flags & NSEventModifierFlagOption) != 0);
mods.caps = ((flags & NSEventModifierFlagCapsLock) != 0);
u32 length = real.length;
for (u32 i = 0; i < length; ++i){
unichar c = [real characterAtIndex:i];
osx_character_input(c, mods);
}
}
- (void)mouseDown:(NSEvent*)event{
NSPoint m = [event locationInWindow];
osx_mouse(m.x, m.y, MouseType_Press);
}
- (void)mouseDragged:(NSEvent*)event{
NSPoint m = [event locationInWindow];
osx_mouse(m.x, m.y, MouseType_Move);
}
- (void)mouseMoved:(NSEvent*)event{
NSPoint m = [event locationInWindow];
osx_mouse(m.x, m.y, MouseType_Move);
}
- (void)mouseUp:(NSEvent*)event{
NSPoint m = [event locationInWindow];
osx_mouse(m.x, m.y, MouseType_Release);
}
- (void)scrollWheel:(NSEvent*)event{
float dx = event.scrollingDeltaX;
float dy = event.scrollingDeltaY;
osx_mouse_wheel(dx, dy);
}
- (BOOL)windowShouldClose:(NSWindow*)sender{
osx_try_to_close();
return(NO);
}
- (void)requestDisplay{
NSRect rect = CGRectMake(0, 0, osx_objc.width, osx_objc.height);
[self setNeedsDisplayInRect:rect];
}
static i32 did_update_for_clipboard = true;
- (void)checkClipboard{
NSPasteboard *board = [NSPasteboard generalPasteboard];
if (board.changeCount != osx_objc.prev_clipboard_change_count && did_update_for_clipboard){
[self requestDisplay];
did_update_for_clipboard = false;
}
}
- (CVReturn)getFrame{
did_update_for_clipboard = true;
@autoreleasepool
{
if (osx_objc.running){
osx_objc.has_clipboard_item = false;
NSPasteboard *board = [NSPasteboard generalPasteboard];
if (board.changeCount != osx_objc.prev_clipboard_change_count){
if (!osx_objc.just_posted_to_clipboard){
NSString *utf8_type = @"public.utf8-plain-text";
NSArray *array = [NSArray arrayWithObjects: utf8_type, nil];
NSString *has_string = [board availableTypeFromArray:array];
if (has_string != nil){
NSData *data = [board dataForType: utf8_type];
if (data != nil){
u32 copy_length = data.length;
if (copy_length > 0){
// TODO(allen): Grow clipboard memory if needed.
if (copy_length+1 < osx_objc.clipboard_max){
osx_objc.clipboard_size = copy_length;
[data getBytes: osx_objc.clipboard_data length: copy_length];
((char*)osx_objc.clipboard_data)[copy_length] = 0;
osx_objc.has_clipboard_item = true;
}
}
}
}
}
else{
osx_objc.just_posted_to_clipboard = false;
}
osx_objc.prev_clipboard_change_count = board.changeCount;
}
osx_step();
}
}
return kCVReturnSuccess;
}
- (void)reshape
{
[super reshape];
NSRect rect = [self bounds];
osx_resize(rect.size.width, rect.size.height);
}
- (void)init_gl
{
if(osx_objc.running){
return;
}
[self setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
NSOpenGLPixelFormatAttribute attrs[] = {
NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersionLegacy,
NSOpenGLPFAColorSize, 24,
NSOpenGLPFAAlphaSize, 8,
NSOpenGLPFAAccelerated,
NSOpenGLPFADoubleBuffer,
0
};
NSOpenGLPixelFormat* format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs];
if(format == nil){
fprintf(stderr, "Error creating OpenGLPixelFormat\n");
exit(1);
}
NSOpenGLContext* context = [[NSOpenGLContext alloc] initWithFormat:format shareContext:nil];
[self setPixelFormat:format];
[self setOpenGLContext:context];
[context makeCurrentContext];
osx_objc.running = true;
}
- (id)init
{
self = [super init];
if(self == nil)
{
return nil;
}
[self init_gl];
return self;
}
- (void)drawRect: (NSRect) bounds{
[self getFrame];
}
- (void)awakeFromNib
{
[self init_gl];
}
- (void)prepareOpenGL
{
[super prepareOpenGL];
[[self openGLContext] makeCurrentContext];
GLint swapInt = 1;
[[self openGLContext] setValues:&swapInt forParameter:NSOpenGLCPSwapInterval];
}
- (void)dealloc
{
[super dealloc];
}
- (BOOL)acceptsFirstResponder
{
return YES;
}
- (BOOL)becomeFirstResponder
{
return YES;
}
- (BOOL)resignFirstResponder
{
return YES;
}
@end
@implementation AppDelegate
- (void)applicationDidFinishLaunching:(id)sender
{
}
- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication*)sender
{
return YES;
}
- (void)applicationWillTerminate:(NSApplication*)sender
{
}
@end
typedef struct File_Table_Entry{
u64 hash;
void *name;
i32 fd;
} File_Table_Entry;
typedef struct File_Change_Queue{
i32 kq;
File_Table_Entry *table;
i32 table_count;
i32 table_size;
} File_Change_Queue;
static File_Change_Queue file_change_queue = {0};
void*
osx_file_name_prefixed_length(char *name){
i32 len = 0;
for (; name[len] != 0; ++len);
char *name_stored = (char*)malloc(4 + l_round_up_u32(len, 4));
*(i32*)name_stored = len;
memcpy(name_stored + 4, name, len);
return(name_stored);
}
b32
osx_name_prefixed_match(void *a, void *b){
b32 result = false;
i32 *len_a = (i32*)a;
i32 *len_b = (i32*)b;
if (*len_a == *len_b){
char *str_a = (char*)(len_a + 1);
char *str_b = (char*)(len_b + 1);
if (strncmp(str_a, str_b, *len_a) == 0){
result = true;
}
}
return(result);
}
File_Table_Entry*
osx_file_listener_lookup_and_return_pointer(u64 hash, void *name){
File_Table_Entry *result = 0;
i32 index = (i32)(hash % file_change_queue.table_size);
i32 first_index = index;
for (;;){
File_Table_Entry *entry = &file_change_queue.table[index];
if (entry->hash == hash){
if (osx_name_prefixed_match(name, entry->name)){
result = entry;
break;
}
}
if (entry->name == 0){
break;
}
index = (index + 1)%file_change_queue.table_size;
if (index == first_index){
break;
}
}
return(result);
}
b32
osx_file_listener_lookup(u64 hash, void *name, i32 *fd_out){
b32 found = false;
File_Table_Entry *entry = osx_file_listener_lookup_and_return_pointer(hash, name);
if (entry != 0){
found = true;
if (fd_out != 0){
*fd_out = entry->fd;
}
}
return(found);
}
b32
osx_file_listener_lookup_and_delete(u64 hash, void *name, i32 *fd_out){
b32 found = false;
File_Table_Entry *entry = osx_file_listener_lookup_and_return_pointer(hash, name);
if (entry != 0){
found = true;
if (fd_out != 0){
*fd_out = entry->fd;
}
memset(entry, 0, sizeof(*entry));
entry->name = (void*)1;
}
return(found);
}
typedef struct Hash_Result{
b32 is_in_table;
b32 was_already_in_table;
} Hash_Result;
u64
osx_file_hash(void *name){
u32 count = *(u32*)(name);
char *str = (char*)name + 4;
u64 hash = 0;
u64 state = count;
u64 inc = 1 + 2*count;
for (u32 i = 0; i <= count; ++i){
u64 old_state = state;
state = state*6364136223846783005ULL + inc;
u32 xorshifted = ((old_state >> 18u) ^ old_state) >> 27u;
u32 rot = old_state >> 59u;
hash = (hash << 3) + (hash & 1) + ((xorshifted >> rot) | (xorshifted << ((-rot) & 31)));
if (i < count){
inc = 1 + 2*(((inc - 1) << 7) | (u8)str[i]);
}
}
return(hash);
}
Hash_Result
osx_file_listener_hash(u64 hash, void *name, i32 fd){
Hash_Result result = {0};
if (osx_file_listener_lookup(hash, name, 0)){
result.is_in_table = true;
result.was_already_in_table = true;
}
else if (file_change_queue.table_count * 6 < file_change_queue.table_size * 5){
i32 index = (i32)(hash % file_change_queue.table_size);
i32 first_index = index;
for (;;){
File_Table_Entry *entry = &file_change_queue.table[index];
if (entry->name == 0 || entry->name == (void*)1){
entry->hash = hash;
entry->name = name;
entry->fd = fd;
result.is_in_table = true;
++file_change_queue.table_count;
break;
}
index = (index + 1)%file_change_queue.table_size;
if (index == first_index){
break;
}
}
if (!result.is_in_table){
fprintf(stdout, "file change listener table error: could not find a free slot in the table\n");
}
}
return(result);
}
Hash_Result
osx_file_listener_hash_bundled(File_Table_Entry entry){
Hash_Result result = osx_file_listener_hash(entry.hash, entry.name, entry.fd);
return(result);
}
void
osx_file_listener_grow_table(i32 table_size){
if (file_change_queue.table_size < table_size){
File_Table_Entry *old_table = file_change_queue.table;
i32 old_size = file_change_queue.table_size;
file_change_queue.table = (File_Table_Entry*)osx_allocate(table_size*sizeof(File_Table_Entry));
memset(file_change_queue.table, 0, table_size*sizeof(File_Table_Entry));
file_change_queue.table_size = table_size;
for (i32 i = 0; i < old_size; ++i){
void *name = file_change_queue.table[i].name;
if (name != 0 && name != (void*)1){
osx_file_listener_hash_bundled(file_change_queue.table[i]);
}
}
if (old_table != 0){
osx_free(old_table, old_size*sizeof(File_Table_Entry));
}
}
}
void
osx_file_listener_double_table(){
osx_file_listener_grow_table(file_change_queue.table_size*2);
}
b32
osx_file_listener_hash_always(u64 hash, void *name, i32 fd){
b32 was_already_in_table = false;
Hash_Result result = osx_file_listener_hash(hash, name, fd);
if (result.was_already_in_table){
was_already_in_table = true;
}
else if (!result.is_in_table){
osx_file_listener_double_table();
osx_file_listener_hash(hash, name, fd);
}
return(was_already_in_table);
}
void
osx_file_listener_init(void){
memset(&file_change_queue, 0, sizeof(file_change_queue));
file_change_queue.kq = kqueue();
osx_file_listener_grow_table(1024);
}
void
osx_add_file_listener(char *dir_name){
DBG_POINT();
if (file_change_queue.kq < 0){
return;
}
//fprintf(stdout, "ADD_FILE_LISTENER: %s\n", dir_name);
i32 fd = open(dir_name, O_EVTONLY);
if (fd <= 0){
fprintf(stdout, "could not open fd for %s\n", dir_name);
return;
}
// TODO(allen): Decide what to do about these darn string mallocs.
void *name_stored = osx_file_name_prefixed_length(dir_name);
struct kevent new_kevent;
EV_SET(&new_kevent, fd, EVFILT_VNODE, EV_ADD|EV_CLEAR, NOTE_DELETE|NOTE_WRITE, 0, name_stored);
struct timespec t = {0};
kevent(file_change_queue.kq, &new_kevent, 1, 0, 0, &t);
b32 was_already_in_table = osx_file_listener_hash_always(osx_file_hash(name_stored), name_stored, fd);
if (was_already_in_table){
free(name_stored);
}
DBG_POINT();
}
void
osx_remove_file_listener(char *dir_name){
void *name = osx_file_name_prefixed_length(dir_name);
i32 fd;
if (osx_file_listener_lookup_and_delete(osx_file_hash(name), name, &fd)){
close(fd);
}
free(name);
}
i32
osx_get_file_change_event(char *buffer, i32 max, i32 *size){
if (file_change_queue.kq < 0){
return 0;
}
i32 result = 0;
struct timespec t = {0};
struct kevent event_out;
i32 count = kevent(file_change_queue.kq, 0, 0, &event_out, 1, &t);
if (count < 0 || (count > 0 && event_out.flags == EV_ERROR)){
//fprintf(stdout, "count: %4d error: %s\n", count, strerror(errno));
}
else if (count > 0){
if (event_out.udata != 0){
i32 len = *(i32*)event_out.udata;
char *str = (char*)((i32*)event_out.udata + 1);
//fprintf(stdout, "got an event for file: %.*s\n", len, str);
if (len <= max){
*size = len;
memcpy(buffer, str, len);
result = 1;
}
else{
// TODO(allen): Cache this miss for retrieval???
// TODO(allen): Better yet, always cache every event on every platform and therefore make two calls per event, but always with enough memory!??
result = -1;
}
}
}
return(result);
}
void
osx_show_cursor(i32 show, i32 cursor_type){
local_persist b32 cursor_is_shown = 1;
if (show == 1){
if (!cursor_is_shown){
[NSCursor unhide];
cursor_is_shown = true;
}
}
else if (show == -1){
if (cursor_is_shown){
[NSCursor hide];
cursor_is_shown = false;
}
}
if (cursor_type > 0){
switch (cursor_type){
case APP_MOUSE_CURSOR_ARROW:
{
[[NSCursor arrowCursor] set];
}break;
case APP_MOUSE_CURSOR_IBEAM:
{
[[NSCursor IBeamCursor] set];
}break;
case APP_MOUSE_CURSOR_LEFTRIGHT:
{
[[NSCursor resizeLeftRightCursor] set];
}break;
case APP_MOUSE_CURSOR_UPDOWN:
{
[[NSCursor resizeUpDownCursor] set];
}break;
}
}
}
My4coderView* view = 0;
NSWindow* window = 0;
void
osx_begin_render(){
CGLLockContext([[view openGLContext] CGLContextObj]);
[[view openGLContext] makeCurrentContext];
}
void
osx_end_render(){
[[view openGLContext] flushBuffer];
CGLUnlockContext([[view openGLContext] CGLContextObj]);
}
void
osx_schedule_step(void){
[NSTimer scheduledTimerWithTimeInterval: 0.0
target: view
selector: @selector(requestDisplay)
userInfo: nil repeats:NO];
}
void
osx_toggle_fullscreen(void){
[window toggleFullScreen:nil];
}
b32
osx_is_fullscreen(void){
b32 result = (([window styleMask] & NSFullScreenWindowMask) != 0);
return(result);
}
void
osx_close_app(void){
[NSApp terminate: nil];
}
int
main(int argc, char **argv){
memset(&osx_objc, 0, sizeof(osx_objc));
umem clipboard_size = MB(4);
osx_objc.clipboard_data = osx_allocate(clipboard_size);
osx_objc.clipboard_max = clipboard_size;
osx_objc.argc = argc;
osx_objc.argv = argv;
osx_file_listener_init();
@autoreleasepool{
NSApplication *app = [NSApplication sharedApplication];
[NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
[app setDelegate:[[AppDelegate alloc] init]];
NSRect screenRect = [[NSScreen mainScreen] frame];
float w = 800.f;
float h = 600.f;
NSRect frame = NSMakeRect((screenRect.size.width - w) * 0.5, (screenRect.size.height - h) * 0.5, w, h);
u32 flags = NSTitledWindowMask | NSClosableWindowMask | NSMiniaturizableWindowMask | NSResizableWindowMask;
window = [[NSWindow alloc] initWithContentRect:frame styleMask:flags backing:NSBackingStoreBuffered defer:NO];
[window setAcceptsMouseMovedEvents:YES];
view = [[My4coderView alloc] init];
[view setFrame:[[window contentView] bounds]];
[view setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
[[window contentView] addSubview:view];
[window setMinSize:NSMakeSize(100, 100)];
[window setTitle:@WINDOW_NAME];
[window makeKeyAndOrderFront:nil];
[NSTimer scheduledTimerWithTimeInterval: 0.5
target: view
selector: @selector(checkClipboard)
userInfo: nil repeats:YES];
osx_init();
[NSApp run];
}
return(0);
}
// BOTTOM