begin macos port
This commit is contained in:
426
src/platform/platform_macos.mm
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426
src/platform/platform_macos.mm
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@@ -0,0 +1,426 @@
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#include "platform/platform.h"
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#import <Cocoa/Cocoa.h>
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// macOS virtual key codes (avoids Carbon.h include)
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enum {
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kVK_ANSI_A = 0x00, kVK_ANSI_C = 0x08, kVK_ANSI_V = 0x09,
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kVK_ANSI_X = 0x07,
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kVK_Return = 0x24, kVK_Tab = 0x30, kVK_Delete = 0x33,
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kVK_Escape = 0x35, kVK_ForwardDelete = 0x75,
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kVK_LeftArrow = 0x7B, kVK_RightArrow = 0x7C,
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kVK_DownArrow = 0x7D, kVK_UpArrow = 0x7E,
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kVK_Home = 0x73, kVK_End = 0x77,
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kVK_Command = 0x37, kVK_Shift = 0x38,
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kVK_RightShift = 0x3C, kVK_RightCommand = 0x36,
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};
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static uint8_t macos_keycode_to_pkey(uint16_t keycode) {
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switch (keycode) {
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case kVK_ANSI_A: return PKEY_A;
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case kVK_ANSI_C: return PKEY_C;
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case kVK_ANSI_V: return PKEY_V;
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case kVK_ANSI_X: return PKEY_X;
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case kVK_Return: return PKEY_RETURN;
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case kVK_Tab: return PKEY_TAB;
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case kVK_Delete: return PKEY_BACKSPACE;
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case kVK_ForwardDelete:return PKEY_DELETE;
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case kVK_Escape: return PKEY_ESCAPE;
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case kVK_LeftArrow: return PKEY_LEFT;
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case kVK_RightArrow: return PKEY_RIGHT;
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case kVK_UpArrow: return PKEY_UP;
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case kVK_DownArrow: return PKEY_DOWN;
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case kVK_Home: return PKEY_HOME;
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case kVK_End: return PKEY_END;
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default: return 0;
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}
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}
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////////////////////////////////
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// Forward declarations
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struct PlatformWindow;
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static PlatformWindow *g_current_window = nullptr;
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////////////////////////////////
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// Objective-C helper classes
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@interface ASmplWindowDelegate : NSObject <NSWindowDelegate>
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@end
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@implementation ASmplWindowDelegate
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- (BOOL)windowShouldClose:(id)sender {
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(void)sender;
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if (g_current_window) {
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// Set should_close flag (accessed via the struct below)
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extern void platform_macos_set_should_close();
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platform_macos_set_should_close();
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}
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return NO; // We handle closing ourselves
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}
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- (void)windowDidResize:(NSNotification *)notification {
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(void)notification;
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if (!g_current_window) return;
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extern void platform_macos_handle_resize();
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platform_macos_handle_resize();
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}
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@end
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@interface ASmplView : NSView <NSTextInputClient>
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@end
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@implementation ASmplView
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- (BOOL)acceptsFirstResponder { return YES; }
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- (BOOL)canBecomeKeyView { return YES; }
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// Needed for NSTextInputClient
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- (BOOL)hasMarkedText { return NO; }
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- (NSRange)markedRange { return NSMakeRange(NSNotFound, 0); }
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- (NSRange)selectedRange { return NSMakeRange(NSNotFound, 0); }
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- (void)setMarkedText:(id)string selectedRange:(NSRange)selectedRange replacementRange:(NSRange)replacementRange {
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(void)string; (void)selectedRange; (void)replacementRange;
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}
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- (void)unmarkText {}
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- (NSArray<NSAttributedStringKey> *)validAttributesForMarkedText { return @[]; }
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- (NSAttributedString *)attributedSubstringForProposedRange:(NSRange)range actualRange:(NSRangePointer)actualRange {
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(void)range; (void)actualRange;
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return nil;
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}
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- (NSUInteger)characterIndexForPoint:(NSPoint)point { (void)point; return NSNotFound; }
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- (NSRect)firstRectForCharacterRange:(NSRange)range actualRange:(NSRangePointer)actualRange {
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(void)range; (void)actualRange;
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return NSZeroRect;
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}
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- (void)insertText:(id)string replacementRange:(NSRange)replacementRange {
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(void)replacementRange;
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NSString *str = nil;
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if ([string isKindOfClass:[NSAttributedString class]])
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str = [string string];
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else
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str = (NSString *)string;
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extern void platform_macos_insert_text(const char *utf8);
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platform_macos_insert_text([str UTF8String]);
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}
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- (void)keyDown:(NSEvent *)event {
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extern void platform_macos_key_down(uint16_t keycode, NSEventModifierFlags mods);
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platform_macos_key_down([event keyCode], [event modifierFlags]);
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// Feed into text input system for character generation
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[self interpretKeyEvents:@[event]];
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}
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- (void)flagsChanged:(NSEvent *)event {
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(void)event;
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// Modifiers are read at key-down time, nothing to accumulate here
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}
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- (void)mouseDown:(NSEvent *)event {
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(void)event;
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extern void platform_macos_mouse_down();
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platform_macos_mouse_down();
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}
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- (void)mouseUp:(NSEvent *)event {
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(void)event;
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extern void platform_macos_mouse_up();
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platform_macos_mouse_up();
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}
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- (void)mouseMoved:(NSEvent *)event { (void)event; }
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- (void)mouseDragged:(NSEvent *)event { (void)event; }
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- (void)scrollWheel:(NSEvent *)event {
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extern void platform_macos_scroll(float dx, float dy);
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float dy = (float)[event scrollingDeltaY];
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if ([event hasPreciseScrollingDeltas])
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dy /= 40.0f; // Normalize trackpad deltas to match discrete wheel steps
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platform_macos_scroll(0, dy);
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}
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- (BOOL)acceptsFirstMouse:(NSEvent *)event { (void)event; return YES; }
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@end
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////////////////////////////////
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// PlatformWindow struct
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struct PlatformWindow {
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NSWindow *ns_window;
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ASmplView *view;
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ASmplWindowDelegate *delegate;
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bool should_close;
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int32_t width;
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int32_t height;
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int32_t pending_menu_cmd;
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PlatformFrameCallback frame_callback;
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void *frame_callback_user_data;
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PlatformInput input;
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B32 prev_mouse_down;
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B32 mouse_down_state;
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F32 backing_scale;
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};
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////////////////////////////////
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// C callback helpers (called from ObjC)
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void platform_macos_set_should_close() {
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if (g_current_window) g_current_window->should_close = true;
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}
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void platform_macos_handle_resize() {
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if (!g_current_window) return;
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NSRect frame = [g_current_window->view bounds];
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F32 scale = g_current_window->backing_scale;
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g_current_window->width = (int32_t)(frame.size.width * scale);
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g_current_window->height = (int32_t)(frame.size.height * scale);
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if (g_current_window->frame_callback)
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g_current_window->frame_callback(g_current_window->frame_callback_user_data);
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}
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void platform_macos_insert_text(const char *utf8) {
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if (!g_current_window || !utf8) return;
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PlatformInput *ev = &g_current_window->input;
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while (*utf8 && ev->char_count < PLATFORM_MAX_CHARS_PER_FRAME) {
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uint8_t c = (uint8_t)*utf8;
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if (c < 32) { utf8++; continue; }
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// Handle ASCII printable range (single-byte UTF-8)
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if (c < 0x80) {
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ev->chars[ev->char_count++] = (uint16_t)c;
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utf8++;
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} else {
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// Skip multi-byte UTF-8 sequences for now (UI only handles ASCII)
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if (c < 0xE0) utf8 += 2;
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else if (c < 0xF0) utf8 += 3;
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else utf8 += 4;
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}
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}
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}
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void platform_macos_key_down(uint16_t keycode, NSEventModifierFlags mods) {
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if (!g_current_window) return;
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PlatformInput *ev = &g_current_window->input;
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uint8_t pkey = macos_keycode_to_pkey(keycode);
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if (pkey && ev->key_count < PLATFORM_MAX_KEYS_PER_FRAME)
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ev->keys[ev->key_count++] = pkey;
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// Command = ctrl_held (macOS convention: Cmd+C, Cmd+V, etc.)
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ev->ctrl_held = (mods & NSEventModifierFlagCommand) != 0;
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ev->shift_held = (mods & NSEventModifierFlagShift) != 0;
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}
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void platform_macos_mouse_down() {
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if (g_current_window) g_current_window->mouse_down_state = 1;
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}
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void platform_macos_mouse_up() {
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if (g_current_window) g_current_window->mouse_down_state = 0;
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}
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void platform_macos_scroll(float dx, float dy) {
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(void)dx;
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if (g_current_window) g_current_window->input.scroll_delta.y += dy;
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}
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////////////////////////////////
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// Menu action handler
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@interface ASmplMenuTarget : NSObject
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- (void)menuAction:(id)sender;
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@end
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@implementation ASmplMenuTarget
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- (void)menuAction:(id)sender {
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if (!g_current_window) return;
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NSMenuItem *item = (NSMenuItem *)sender;
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g_current_window->pending_menu_cmd = (int32_t)[item tag];
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}
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@end
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static ASmplMenuTarget *g_menu_target = nil;
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////////////////////////////////
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// Public API
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PlatformWindow *platform_create_window(PlatformWindowDesc *desc) {
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// Ensure NSApplication is initialized
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[NSApplication sharedApplication];
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[NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
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NSRect content_rect = NSMakeRect(0, 0, desc->width, desc->height);
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NSWindow *ns_window = [[NSWindow alloc]
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initWithContentRect:content_rect
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styleMask:(NSWindowStyleMaskTitled | NSWindowStyleMaskClosable |
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NSWindowStyleMaskMiniaturizable | NSWindowStyleMaskResizable)
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backing:NSBackingStoreBuffered
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defer:NO];
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[ns_window setTitle:[NSString stringWithUTF8String:desc->title]];
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[ns_window center];
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ASmplView *view = [[ASmplView alloc] initWithFrame:content_rect];
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[ns_window setContentView:view];
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[ns_window makeFirstResponder:view];
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// Enable mouse moved events
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[ns_window setAcceptsMouseMovedEvents:YES];
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ASmplWindowDelegate *delegate = [[ASmplWindowDelegate alloc] init];
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[ns_window setDelegate:delegate];
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PlatformWindow *window = new PlatformWindow();
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memset(window, 0, sizeof(*window));
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window->ns_window = ns_window;
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window->view = view;
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window->delegate = delegate;
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window->should_close = false;
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window->backing_scale = (F32)[ns_window backingScaleFactor];
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window->width = (int32_t)(desc->width * window->backing_scale);
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window->height = (int32_t)(desc->height * window->backing_scale);
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g_current_window = window;
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[ns_window makeKeyAndOrderFront:nil];
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[NSApp activateIgnoringOtherApps:YES];
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return window;
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}
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void platform_destroy_window(PlatformWindow *window) {
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if (!window) return;
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[window->ns_window close];
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if (g_current_window == window)
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g_current_window = nullptr;
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delete window;
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}
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bool platform_poll_events(PlatformWindow *window) {
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@autoreleasepool {
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NSEvent *event;
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while ((event = [NSApp nextEventMatchingMask:NSEventMaskAny
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untilDate:nil
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inMode:NSDefaultRunLoopMode
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dequeue:YES])) {
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[NSApp sendEvent:event];
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}
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}
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return !window->should_close;
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}
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void platform_get_size(PlatformWindow *window, int32_t *w, int32_t *h) {
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if (w) *w = window->width;
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if (h) *h = window->height;
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}
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void *platform_get_native_handle(PlatformWindow *window) {
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return (__bridge void *)window->view;
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}
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void platform_set_frame_callback(PlatformWindow *window, PlatformFrameCallback cb, void *user_data) {
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window->frame_callback = cb;
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window->frame_callback_user_data = user_data;
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}
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void platform_set_menu(PlatformWindow *window, PlatformMenu *menus, int32_t menu_count) {
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(void)window;
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if (!g_menu_target)
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g_menu_target = [[ASmplMenuTarget alloc] init];
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NSMenu *menu_bar = [[NSMenu alloc] init];
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// App menu (required on macOS)
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NSMenuItem *app_menu_item = [[NSMenuItem alloc] init];
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NSMenu *app_menu = [[NSMenu alloc] init];
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[app_menu addItemWithTitle:@"Quit autosample"
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action:@selector(terminate:)
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keyEquivalent:@"q"];
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[app_menu_item setSubmenu:app_menu];
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[menu_bar addItem:app_menu_item];
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for (int32_t i = 0; i < menu_count; i++) {
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NSMenuItem *top_item = [[NSMenuItem alloc] init];
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NSMenu *submenu = [[NSMenu alloc] initWithTitle:
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[NSString stringWithUTF8String:menus[i].label]];
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for (int32_t j = 0; j < menus[i].item_count; j++) {
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PlatformMenuItem *item = &menus[i].items[j];
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if (!item->label) {
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[submenu addItem:[NSMenuItem separatorItem]];
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} else {
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NSMenuItem *ns_item = [[NSMenuItem alloc]
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initWithTitle:[NSString stringWithUTF8String:item->label]
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action:@selector(menuAction:)
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keyEquivalent:@""];
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[ns_item setTag:item->id];
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[ns_item setTarget:g_menu_target];
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[submenu addItem:ns_item];
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}
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}
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[top_item setSubmenu:submenu];
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[menu_bar addItem:top_item];
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}
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[NSApp setMainMenu:menu_bar];
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}
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int32_t platform_poll_menu_command(PlatformWindow *window) {
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int32_t cmd = window->pending_menu_cmd;
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window->pending_menu_cmd = 0;
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return cmd;
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}
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PlatformInput platform_get_input(PlatformWindow *window) {
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PlatformInput result = window->input;
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// Poll mouse position (Cocoa uses bottom-left origin, flip Y)
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NSPoint mouse_in_window = [window->ns_window mouseLocationOutsideOfEventStream];
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NSRect view_bounds = [window->view bounds];
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F32 scale = window->backing_scale;
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result.mouse_pos = v2f32(
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(F32)mouse_in_window.x * scale,
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(F32)(view_bounds.size.height - mouse_in_window.y) * scale);
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// Mouse button state
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result.was_mouse_down = window->prev_mouse_down;
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result.mouse_down = window->mouse_down_state;
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window->prev_mouse_down = result.mouse_down;
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// Clear accumulated events for next frame
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window->input = {};
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return result;
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}
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void platform_clipboard_set(const char *text) {
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if (!text) return;
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NSPasteboard *pb = [NSPasteboard generalPasteboard];
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[pb clearContents];
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[pb setString:[NSString stringWithUTF8String:text] forType:NSPasteboardTypeString];
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}
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const char *platform_clipboard_get() {
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static char buf[4096];
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buf[0] = '\0';
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NSPasteboard *pb = [NSPasteboard generalPasteboard];
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NSString *str = [pb stringForType:NSPasteboardTypeString];
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if (str) {
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const char *utf8 = [str UTF8String];
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if (utf8) {
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size_t len = strlen(utf8);
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if (len >= sizeof(buf)) len = sizeof(buf) - 1;
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memcpy(buf, utf8, len);
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buf[len] = '\0';
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}
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}
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return buf[0] ? buf : nullptr;
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}
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