4coder/platform_mac/mac_4ed.m

892 lines
24 KiB
Objective-C

/*
* Mr. 4th Dimention - Allen Webster
*
* 28.06.2017
*
* Mac Objective C layer for 4coder
*
*/
// TOP
#define IS_OBJC_LAYER
#define inline internal
#include "4ed_defines.h"
#undef inline
#include "4coder_API/version.h"
#include "4coder_generated/keycodes.h"
#include "4ed_log.h"
#include "4ed_cursor_codes.h"
#include "4ed_linked_node_macros.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);
// TODO(allen): Not ideal solution, look for realer text
// input on Mac. This just makes sure we're getting good
// results for unmodified keys when cmnd and ctrl aren't down.
NSString *which = with_mods;
if (mods.command || mods.control){
which = real;
}
u32 length = which.length;
for (u32 i = 0; i < length; ++i){
unichar c = [which 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{
CGRect cg_rect = CGRectMake(0, 0, osx_objc.width, osx_objc.height);
NSRect rect = NSRectFromCGRect(cg_rect);
[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){
if (copy_length + 1 > osx_objc.clipboard_max){
osx_free(osx_objc.clipboard_data, osx_objc.clipboard_max);
osx_objc.clipboard_max = l_round_up_u32(copy_length + 1, KB(4));
osx_objc.clipboard_data = osx_allocate(osx_objc.clipboard_max);
}
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.gl_is_initialized){
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.gl_is_initialized = 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_Change_Node File_Change_Node;
struct File_Change_Node{
File_Change_Node *next;
char *name;
i32 len;
};
typedef struct{
File_Change_Node *first;
File_Change_Node *last;
volatile i64 lock;
} File_Change_Queue;
static File_Change_Queue file_queue = {0};
File_Change_Node*
file_change_node(char *name){
i32 len = strlen(name);
void *block = malloc(len + 1 + sizeof(File_Change_Node));
File_Change_Node *node = (File_Change_Node*)block;
memset(node, 0, sizeof(*node));
node->name = (char*)(node + 1);
node->len = len;
memcpy(node->name, name, len + 1);
return(node);
}
void
file_change_node_free(File_Change_Node *node){
free(node);
}
#define file_queue_lock() for(;;){i64 v=__sync_val_compare_and_swap(&file_queue.lock,0,1);if(v==0){break;}}
#define file_queue_unlock() __sync_lock_test_and_set(&file_queue.lock, 0)
void
file_watch_callback(ConstFSEventStreamRef stream, void *callbackInfo, size_t numEvents, void *evPaths, const FSEventStreamEventFlags *evFlags, const FSEventStreamEventId *evIds){
char **paths = (char**)evPaths;
for (int i = 0; i < numEvents; ++i){
File_Change_Node *node = file_change_node(paths[i]);
file_queue_lock();
sll_push(file_queue.first, file_queue.last, node);
file_queue_unlock();
}
}
//////////////////
typedef struct{
FSEventStreamRef stream;
} File_Watching_Handle;
File_Watching_Handle
schedule_file_watching(char *f){
File_Watching_Handle handle = {0};
CFStringRef arg = CFStringCreateWithCString(0, f, kCFStringEncodingUTF8);
CFArrayRef paths = CFArrayCreate(0, (const void**)&arg, 1, 0);
void *callbackInfo = 0;
CFAbsoluteTime latency = 2.0;
handle.stream = FSEventStreamCreate(0, &file_watch_callback, 0, paths, kFSEventStreamEventIdSinceNow, latency, kFSEventStreamCreateFlagFileEvents);
FSEventStreamScheduleWithRunLoop(handle.stream, CFRunLoopGetMain(), kCFRunLoopDefaultMode);
if (!FSEventStreamStart(handle.stream)){
fprintf(stdout, "BAD SCHED: %s\n", f);
}
return(handle);
}
void
unschedule_file_watching(File_Watching_Handle handle){
FSEventStreamStop(handle.stream);
FSEventStreamInvalidate(handle.stream);
FSEventStreamRelease(handle.stream);
}
typedef struct File_Table_Entry{
u64 hash;
void *name;
i32 counter;
File_Watching_Handle handle;
} File_Table_Entry;
typedef struct File_Change_Table{
File_Table_Entry *table;
i32 count;
i32 size;
} File_Change_Table;
static File_Change_Table file_change_table = {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 + 1, 4));
*(i32*)name_stored = len;
memcpy(name_stored + 4, name, len);
name_stored[4 + len] = 0;
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_table.size);
i32 first_index = index;
for (;;){
File_Table_Entry *entry = &file_change_table.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_table.size;
if (index == first_index){
break;
}
}
return(result);
}
void
osx_file_listener_table_entry_erase(File_Table_Entry *entry){
free(entry->name);
unschedule_file_watching(entry->handle);
memset(entry, 0, sizeof(*entry));
entry->name = (void*)1;
}
b32
osx_file_listener_lookup_and_decrement(u64 hash, void *name){
b32 found = false;
File_Table_Entry *entry = osx_file_listener_lookup_and_return_pointer(hash, name);
if (entry != 0){
found = true;
--entry->counter;
if (entry->counter <= 0){
osx_file_listener_table_entry_erase(entry);
}
}
return(found);
}
b32
osx_file_listener_hash(u64 hash, void *name, i32 counter, File_Watching_Handle **handle_address_out){
b32 result = 0;
if (file_change_table.count*6 < file_change_table.size*5){
i32 index = (i32)(hash % file_change_table.size);
i32 first_index = index;
for (;;){
File_Table_Entry *entry = &file_change_table.table[index];
if (entry->name == 0 || entry->name == (void*)1){
entry->hash = hash;
entry->name = name;
entry->counter = counter;
*handle_address_out = &entry->handle;
result = true;
++file_change_table.count;
break;
}
index = (index + 1)%file_change_table.size;
if (index == first_index){
break;
}
}
if (!result){
LOG("file change listener table error: could not find a free slot in the table\n");
}
}
return(result);
}
void
osx_file_listener_grow_table(i32 size){
if (file_change_table.size < size){
File_Table_Entry *old_table = file_change_table.table;
i32 old_size = file_change_table.size;
file_change_table.table = (File_Table_Entry*)osx_allocate(size*sizeof(File_Table_Entry));
memset(file_change_table.table, 0, size*sizeof(File_Table_Entry));
file_change_table.size = size;
for (i32 i = 0; i < old_size; ++i){
void *name = file_change_table.table[i].name;
if (name != 0 && name != (void*)1){
File_Table_Entry *e = &file_change_table.table[i];
File_Watching_Handle *handle_address = 0;
osx_file_listener_hash(e->hash, e->name, e->counter, &handle_address);
*handle_address = e->handle;
}
}
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_table.size*2);
}
b32
osx_file_listener_insert_or_increment_always(u64 hash, void *name, File_Watching_Handle **handle_address_out){
b32 was_already_in_table = false;
File_Table_Entry *entry = osx_file_listener_lookup_and_return_pointer(hash, name);
if (entry != 0){
++entry->counter;
was_already_in_table = true;
}
else{
b32 result = osx_file_listener_hash(hash, name, 1, handle_address_out);
if (!result){
osx_file_listener_double_table();
osx_file_listener_hash(hash, name, 1, handle_address_out);
}
}
return(was_already_in_table);
}
u64
osx_get_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);
}
void
osx_file_listener_init(void){
osx_file_listener_grow_table(4096);
}
void
osx_add_file_listener(char *dir_name){
// TODO(allen): Decide what to do about these darn string mallocs.
void *name_stored = osx_file_name_prefixed_length(dir_name);
File_Watching_Handle *handle_address = 0;
b32 was_already_in_table = osx_file_listener_insert_or_increment_always(osx_get_file_hash(name_stored), name_stored, &handle_address);
if (was_already_in_table){
free(name_stored);
}
else{
*handle_address = schedule_file_watching(dir_name);
}
}
void
osx_remove_file_listener(char *dir_name){
void *name_stored = osx_file_name_prefixed_length(dir_name);
osx_file_listener_lookup_and_decrement(osx_get_file_hash(name_stored), name_stored);
free(name_stored);
}
i32
osx_get_file_change_event(char *buffer, i32 max, i32 *size){
file_queue_lock();
File_Change_Node *node = file_queue.first;
sll_pop(file_queue.first, file_queue.last);
file_queue_unlock();
i32 result = 0;
if (node != 0){
if (node->len < max){
result = 1;
memcpy(buffer, node->name, node->len);
*size = node->len;
}
else{
result = -1;
// TODO(allen): Somehow save the node?
}
file_change_node_free(node);
}
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];
}
f32
osx_timer_seconds(void){
f32 result = CACurrentMediaTime();
return(result);
}
NSFontManager *font_manager = 0;
NSString *get_font_path(NSFont *font){
CFStringRef name = (CFStringRef)[font fontName];
CGFloat size = [font pointSize];
CTFontDescriptorRef ref = CTFontDescriptorCreateWithNameAndSize(name, size);
CFURLRef url = CTFontDescriptorCopyAttribute(ref, kCTFontURLAttribute);
NSString *path = [(NSURL *)CFBridgingRelease(url) path];
return(path);
}
OSX_Font_Match
osx_get_font_match(char *name, i32 pt_size, b32 italic, b32 bold){
if (font_manager == 0){
font_manager = [NSFontManager sharedFontManager];
}
NSString *name_string = [NSString stringWithUTF8String:name];
NSFontTraitMask trait_mask = 0;
if (italic){
trait_mask = (trait_mask | NSItalicFontMask);
}
NSInteger weight = 5;
if (bold){
weight = 9;
}
b32 used_base_file = false;
NSFont *font = [font_manager
fontWithFamily: name_string
traits: trait_mask
weight: weight
size:(float)pt_size];
if (font == nil){
font = [font_manager
fontWithFamily: name_string
traits: 0
weight: 5
size:(float)pt_size];
used_base_file = true;
}
OSX_Font_Match match = {0};
if (font != nil){
NSString *path = get_font_path(font);
char *path_c = 0;
if (path != nil){
path_c = (char*)[path UTF8String];
}
if (path_c != 0){
match.path = path_c;
match.used_base_file = used_base_file;
}
}
return(match);
}
OSX_Loadable_Fonts
osx_list_loadable_fonts(void){
if (font_manager == 0){
font_manager = [NSFontManager sharedFontManager];
}
NSArray<NSString*> *fonts = [font_manager availableFontFamilies];
OSX_Loadable_Fonts result = {0};
NSUInteger count_u = [fonts count];
int count = (int)count_u;
result.count = count;
size_t memsize = count*2*sizeof(char*);
void *mem = malloc(memsize);
result.names = (char**)mem;
result.paths = result.names + count;
for (int i = 0; i < count; ++i){
NSString *font_n = fonts[i];
char *font_n_c = (char*)[font_n UTF8String];
NSFont *font = [font_manager
fontWithFamily:font_n
traits:NSUnboldFontMask|NSUnitalicFontMask
weight:5
size:12];
NSString *path = get_font_path(font);
char *path_c = 0;
if (path != nil){
path_c = (char*)[path UTF8String];
}
result.names[i] = font_n_c;
result.paths[i] = path_c;
}
return(result);
}
void
osx_change_title(char *str_c){
NSString *str = [NSString stringWithUTF8String:str_c];
[window setTitle:str];
}
int
main(int argc, char **argv){
memset(&osx_objc, 0, sizeof(osx_objc));
u32 clipboard_size = KB(16);
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();
osx_objc.running = true;
[NSApp run];
}
return(0);
}
// BOTTOM