我正在开发Mac桌面应用程序,我正在使用
捕获屏幕CGImageRef screenShot = CGWindowListCreateImage(CGRectInfinite, kCGWindowListOptionAll, kCGNullWindowID, kCGWindowImageDefault);
并显示屏幕截图, 问题是,我希望它也应该显示鼠标光标,但它没有显示, 我需要为此启用任何设置吗?
我在调用此函数之前尝试过跟进
CGDisplayShowCursor(kCGDirectMainDisplay);
CGAssociateMouseAndMouseCursorPosition(true);
但它不起作用, 当我使用以下
检查时bool bCursor = CGCursorIsDrawnInFramebuffer(); /* This returns false */
bCursor = CGCursorIsVisible(); /* This returns true */
这个值说,光标没有在framebuffer()中绘制,但是光标是可见的, 我想我只需要做的是,在帧缓冲区中绘制光标,但这是怎样的挑战,
提前致谢。
答案 0 :(得分:6)
-(CGImageRef)appendMouseCursor:(CGImageRef)pSourceImage{
// get the cursor image
NSPoint mouseLoc;
mouseLoc = [NSEvent mouseLocation]; //get cur
NSLog(@"Mouse location is x=%d,y=%d",(int)mouseLoc.x,(int)mouseLoc.y);
// get the mouse image
NSImage *overlay = [[[NSCursor arrowCursor] image] copy];
NSLog(@"Mouse location is x=%d,y=%d cursor width = %d, cursor height = %d",(int)mouseLoc.x,(int)mouseLoc.y,(int)[overlay size].width,(int)[overlay size].height);
int x = (int)mouseLoc.x;
int y = (int)mouseLoc.y;
int w = (int)[overlay size].width;
int h = (int)[overlay size].height;
int org_x = x;
int org_y = y;
size_t height = CGImageGetHeight(pSourceImage);
size_t width = CGImageGetWidth(pSourceImage);
int bytesPerRow = CGImageGetBytesPerRow(pSourceImage);
unsigned int * imgData = (unsigned int*)malloc(height*bytesPerRow);
// have the graphics context now,
CGRect bgBoundingBox = CGRectMake (0, 0, width,height);
CGContextRef context = CGBitmapContextCreate(imgData, width,
height,
8, // 8 bits per component
bytesPerRow,
CGImageGetColorSpace(pSourceImage),
CGImageGetBitmapInfo(pSourceImage));
// first draw the image
CGContextDrawImage(context,bgBoundingBox,pSourceImage);
// then mouse cursor
CGContextDrawImage(context,CGRectMake(0, 0, width,height),pSourceImage);
// then mouse cursor
CGContextDrawImage(context,CGRectMake(org_x, org_y, w,h),[overlay CGImageForProposedRect: NULL context: NULL hints: NULL] );
// assuming both the image has been drawn then create an Image Ref for that
CGImageRef pFinalImage = CGBitmapContextCreateImage(context);
CGContextRelease(context);
return pFinalImage; /* to be released by the caller */
}