Copy image to clipboard for GraphicsEditor

src/app/core/platform/clipboard.h

@@ -0,0 +1,10 @@
+#ifdef _WIN32
+
+#elif defined(__APPLE__)
+
+#include <vector>
+
+void CopyImageToClipboard(const std::vector<uint8_t>& data);
+void GetImageFromClipboard(std::vector<uint8_t>& data, int& width, int& height);
+
+#endif

src/app/core/platform/clipboard.mm

@@ -0,0 +1,42 @@
+#include "clipboard.h"
+
+#include <iostream>
+#include <vector>
+
+#import <Cocoa/Cocoa.h>
+
+void CopyImageToClipboard(const std::vector<uint8_t>& pngData) {
+  NSData* data = [NSData dataWithBytes:pngData.data() length:pngData.size()];
+  NSImage* image = [[NSImage alloc] initWithData:data];
+
+  NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
+  [pasteboard clearContents];
+  [pasteboard writeObjects:@[ image ]];
+}
+
+void GetImageFromClipboard(std::vector<uint8_t>& pixel_data, int& width, int& height) {
+  NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
+  NSArray* classArray = [NSArray arrayWithObject:[NSImage class]];
+  NSDictionary* options = [NSDictionary dictionary];
+
+  NSImage* image = [pasteboard readObjectsForClasses:classArray options:options].firstObject;
+  if (!image) {
+    width = height = 0;
+    return;
+  }
+
+  // Assuming the image is in an RGBA format
+  CGImageRef cgImage = [image CGImageForProposedRect:nil context:nil hints:nil];
+  width = (int)CGImageGetWidth(cgImage);
+  height = (int)CGImageGetHeight(cgImage);
+
+  size_t bytesPerRow = 4 * width;
+  size_t totalBytes = bytesPerRow * height;
+  pixel_data.resize(totalBytes);
+
+  CGContextRef context = CGBitmapContextCreate(
+      pixel_data.data(), width, height, 8, bytesPerRow, CGColorSpaceCreateDeviceRGB(),
+      kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big);
+  CGContextDrawImage(context, CGRectMake(0, 0, width, height), cgImage);
+  CGContextRelease(context);
+}