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Diffstat (limited to 'OSX/grabclient-osx.m')
| -rw-r--r-- | OSX/grabclient-osx.m | 464 |
1 files changed, 0 insertions, 464 deletions
diff --git a/OSX/grabclient-osx.m b/OSX/grabclient-osx.m deleted file mode 100644 index 7bfdcb4..0000000 --- a/OSX/grabclient-osx.m +++ /dev/null @@ -1,464 +0,0 @@ -/* xscreensaver, Copyright (c) 1992-2018 Jamie Zawinski <jwz@jwz.org> - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation. No representations are made about the suitability of this - * software for any purpose. It is provided "as is" without express or - * implied warranty. - */ - -/* This is the OSX implementation of desktop-grabbing and image-loading. - This code is invoked by "utils/grabclient.c", which is linked directly - in to each screen saver bundle. - - X11-based builds of the savers do not use this code (even on MacOS). - This is used only by the Cocoa build of the savers. - */ - -#import <stdlib.h> -#import <stdint.h> -#ifndef USE_IPHONE -# import <Cocoa/Cocoa.h> -#else -# import "SaverRunner.h" -#endif -#import "jwxyz-cocoa.h" -#import "grabscreen.h" -#import "colorbars.h" -#import "resources.h" -#import "usleep.h" - - -#ifdef USE_IPHONE -# define NSImage UIImage -#endif - - -#ifndef MAC_OS_X_VERSION_10_6 -# define MAC_OS_X_VERSION_10_6 1060 /* undefined in 10.4 SDK, grr */ -#endif - -#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5 - - /* 10.4 code. - - This version of the code works on 10.4, but is flaky. There is - a better way to do it on 10.5 and newer, but taking this path, - then we are being compiled against the 10.4 SDK instead of the - 10.5 SDK, and the newer API is not available to us. - */ - -static void -copy_framebuffer_to_ximage (CGDirectDisplayID cgdpy, XImage *xim, - int window_x, int window_y) -{ - unsigned char *data = (unsigned char *) - CGDisplayAddressForPosition (cgdpy, window_x, window_y); - int bpp = CGDisplayBitsPerPixel (cgdpy); - int spp = CGDisplaySamplesPerPixel (cgdpy); - int bps = CGDisplayBitsPerSample (cgdpy); - int bpr = CGDisplayBytesPerRow (cgdpy); - - int y; - int ximw = xim->width; - int ximh = xim->height; - - uint32_t *odata = (uint32_t *) xim->data; - - switch (bpp) { - case 32: - if (spp != 3) abort(); - if (bps != 8) abort(); - int xwpl = xim->bytes_per_line/4; - for (y = 0; y < ximh; y++) { - // We can do this because the frame buffer and XImage are both ARGB 32. - // Both PPC and Intel use ARGB, viewed in word order (not byte-order). - memcpy (odata, data, ximw * 4); - odata += xwpl; - data += bpr; - } - break; - - case 16: - if (spp != 3) abort(); - if (bps != 5) abort(); - for (y = 0; y < ximh; y++) { - uint16_t *ip = (uint16_t *) data; - int x; - for (x = 0; x < ximw; x++) { - uint16_t p = *ip++; - // This should be ok on both PPC and Intel (ARGB, word order) - unsigned char r = (p >> 10) & 0x1F; - unsigned char g = (p >> 5) & 0x1F; - unsigned char b = (p ) & 0x1F; - r = (r << 3) | (r >> 2); - g = (g << 3) | (g >> 2); - b = (b << 3) | (b >> 2); - uint32_t pixel = 0xFF000000 | (r << 16) | (g << 8) | b; - // XPutPixel (xim, x, y, pixel); - *odata++ = pixel; - } - data += bpr; - } - break; - - case 8: - { - /* Get the current palette of the display. */ - CGDirectPaletteRef pal = CGPaletteCreateWithDisplay (cgdpy); - - /* Map it to 32bpp pixels */ - uint32_t map[256]; - for (y = 0; y < 256; y++) { - CGDeviceColor c = CGPaletteGetColorAtIndex (pal, y); - unsigned char r = c.red * 255.0; - unsigned char g = c.green * 255.0; - unsigned char b = c.blue * 255.0; - uint32_t pixel = 0xFF000000 | (r << 16) | (g << 8) | b; - map[y] = pixel; - } - - for (y = 0; y < ximh; y++) { - unsigned char *ip = data; - int x; - for (x = 0; x < ximw; x++) { - *odata++ = map[*ip++]; - } - data += bpr; - } - CGPaletteRelease (pal); - } - break; - - default: - abort(); - break; - } -} - - -/* Loads an image into the Drawable, returning once the image is loaded. - */ -Bool -osx_grab_desktop_image (Screen *screen, Window xwindow, Drawable drawable, - XRectangle *geom_ret) -{ - Display *dpy = DisplayOfScreen (screen); - NSView *nsview = jwxyz_window_view (xwindow); - NSWindow *nswindow = [nsview window]; - XWindowAttributes xgwa; - int window_x, window_y; - Window unused; - - // Figure out where this window is on the screen. - // - XGetWindowAttributes (dpy, xwindow, &xgwa); - XTranslateCoordinates (dpy, xwindow, RootWindowOfScreen (screen), 0, 0, - &window_x, &window_y, &unused); - - // Use the size of the Drawable, not the Window. - { - Window r; - int x, y; - unsigned int w, h, bbw, d; - XGetGeometry (dpy, drawable, &r, &x, &y, &w, &h, &bbw, &d); - xgwa.width = w; - xgwa.height = h; - } - - // Create a tmp ximage to hold the screen data. - // - XImage *xim = XCreateImage (dpy, xgwa.visual, 32, ZPixmap, 0, 0, - xgwa.width, xgwa.height, 8, 0); - xim->data = (char *) malloc (xim->height * xim->bytes_per_line); - - - // Find the address in the frame buffer of the top left of this window. - // - CGDirectDisplayID cgdpy = 0; - { - CGPoint p; - // #### this isn't quite right for screen 2: it's offset slightly. - p.x = window_x; - p.y = window_y; - CGDisplayCount n; - CGGetDisplaysWithPoint (p, 1, &cgdpy, &n); - if (!cgdpy) abort(); - } - - // Paint a transparent "hole" in this window. - // - BOOL oopaque = [nswindow isOpaque]; - [nswindow setOpaque:NO]; - - [[NSColor clearColor] set]; - NSRectFill ([nsview frame]); - [[nswindow graphicsContext] flushGraphics]; - - - // Without this, we get a dozen black scanlines at the top. - // #### But with this, the screen saver loops, because calling this - // seems to implicitly mark the display as non-idle! - // CGDisplayCaptureWithOptions (cgdpy, kCGCaptureNoFill); - - // #### So let's try waiting for the vertical blank instead... - // Nope, that doesn't work. - // - // CGDisplayWaitForBeamPositionOutsideLines (cgdpy, 0, - // window_y + [nswindow frame].size.height); - - // #### Ok, try a busy-wait? - // Nope. - // - - // #### Ok, just fuckin' sleep! - // - usleep (100000); - - - // Pull the bits out of the frame buffer. - // - copy_framebuffer_to_ximage (cgdpy, xim, window_x, window_y); - - // CGDisplayRelease (cgdpy); - - // Make the window visible again. - // - [nswindow setOpaque:oopaque]; - - // Splat the XImage onto the target drawable (probably the window) - // and free the bits. - // - XGCValues gcv; - GC gc = XCreateGC (dpy, drawable, 0, &gcv); - XPutImage (dpy, drawable, gc, xim, 0, 0, 0, 0, xim->width, xim->height); - XFreeGC (dpy, gc); - - if (geom_ret) { - geom_ret->x = 0; - geom_ret->y = 0; - geom_ret->width = xim->width; - geom_ret->height = xim->height; - } - - XDestroyImage (xim); - return True; -} - - -#elif defined(USE_IPHONE) - - /* What a hack! - - On iOS, our application delegate, SaverRunner, grabs an image - of itself as a UIImage before mapping the XScreenSaverView. - In this code, we ask SaverRunner for that UIImage, then copy - it to the root window. - */ - -Bool -osx_grab_desktop_image (Screen *screen, Window xwindow, Drawable drawable, - XRectangle *geom_ret) -{ - SaverRunner *s = - (SaverRunner *) [[UIApplication sharedApplication] delegate]; - if (! s) - return False; - if (! [s isKindOfClass:[SaverRunner class]]) - return False; - UIImage *img = [s screenshot]; - if (! img) - return False; - jwxyz_draw_NSImage_or_CGImage (DisplayOfScreen (screen), drawable, - True, img, geom_ret, 0); - return True; -} - - -#else /* MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5 - - 10.5+ code. - - This version of the code is simpler and more reliable, but - uses an API that only exist on 10.5 and newer, so we can only - use it if when being compiled against the 10.5 SDK or later. - */ - -extern float jwxyz_scale (Window); /* jwxyzI.h */ - -/* Loads an image into the Drawable, returning once the image is loaded. - */ -Bool -osx_grab_desktop_image (Screen *screen, Window xwindow, Drawable drawable, - XRectangle *geom_ret) -{ - Display *dpy = DisplayOfScreen (screen); - NSView *nsview = jwxyz_window_view (xwindow); - XWindowAttributes xgwa; - int window_x, window_y; - Window unused; - - // Figure out where this window is on the screen. - // - XGetWindowAttributes (dpy, xwindow, &xgwa); - XTranslateCoordinates (dpy, xwindow, RootWindowOfScreen (screen), 0, 0, - &window_x, &window_y, &unused); - - // Grab only the rectangle of the screen underlying this window. - // - CGRect cgrect; - double s = jwxyz_scale (xwindow); - cgrect.origin.x = window_x; - cgrect.origin.y = window_y; - cgrect.size.width = xgwa.width / s; - cgrect.size.height = xgwa.height / s; - - /* If a password is required to unlock the screen, a large black - window will be on top of all of the desktop windows by the time - we reach here, making the screen-grab rather uninteresting. If - we move ourselves temporarily below the login-window windows - before capturing the image, we capture the real desktop as - intended. - - Oct 2016: Surprise, this trick no longer works on MacOS 10.12. Sigh. - */ - - CGWindowID windowNumber = (CGWindowID) nsview.window.windowNumber; - - { - CFArrayRef L = CGWindowListCopyWindowInfo (kCGWindowListOptionOnScreenOnly, - kCGNullWindowID); - - CFIndex n = CFArrayGetCount(L); - for (int i = 0; i < n; i++) { - NSDictionary *dict = (NSDictionary *) CFArrayGetValueAtIndex(L, i); - - // loginwindow creates multiple toplevel windows. Grab the lowest one. - if(![([dict objectForKey:(NSString *)kCGWindowOwnerName]) - compare:@"loginwindow"]) { - windowNumber = ((NSNumber *)[dict objectForKey: - (NSString *)kCGWindowNumber]).intValue; - } - } - CFRelease (L); - } - - // Grab a screen shot of those windows below this one - // (hey, X11 can't do that!) - // - CGImageRef img = - CGWindowListCreateImage (cgrect, - kCGWindowListOptionOnScreenBelowWindow, - windowNumber, - kCGWindowImageDefault); - - if (! img) return False; - - // Render the grabbed CGImage into the Drawable. - jwxyz_draw_NSImage_or_CGImage (DisplayOfScreen (screen), drawable, - False, img, geom_ret, 0); - CGImageRelease (img); - return True; -} - -#endif /* 10.5+ code */ - - -# ifndef USE_IPHONE - -/* Returns the EXIF rotation property of the image, if any. - */ -static int -exif_rotation (const char *filename) -{ - /* As of 10.6, NSImage rotates according to EXIF by default: - http://developer.apple.com/mac/library/releasenotes/cocoa/appkit.html - So this function should return -1 when *running* on 10.6 systems. - But when running against older systems, we need to examine the image - to figure out its rotation. - */ - -# if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6 /* 10.6 SDK */ - - /* When we have compiled against the 10.6 SDK, we know that we are - running on a 10.6 or later system. - */ - return -1; - -# else /* Compiled against 10.5 SDK or earlier */ - - /* If this selector exists, then we are running against a 10.6 runtime - that does automatic EXIF rotation (despite the fact that we were - compiled against the 10.5 or earlier SDK). So in that case, this - function should no-op. - */ - if ([NSImage instancesRespondToSelector: - @selector(initWithDataIgnoringOrientation:)]) - return -1; - - /* Otherwise, go ahead and figure out what the rotational characteristics - of this image are. */ - - - - /* This is a ridiculous amount of rigamarole to go through, but for some - reason the "Orientation" tag does not exist in the "NSImageEXIFData" - dictionary inside the NSBitmapImageRep of the NSImage. Several other - EXIF tags are there (e.g., shutter speed) but not orientation. WTF? - */ - CFStringRef s = CFStringCreateWithCString (NULL, filename, - kCFStringEncodingUTF8); - CFURLRef url = CFURLCreateWithFileSystemPath (NULL, s, - kCFURLPOSIXPathStyle, 0); - CGImageSourceRef cgimg = CGImageSourceCreateWithURL (url, NULL); - if (! cgimg) return -1; - - NSDictionary *props = (NSDictionary *) - CGImageSourceCopyPropertiesAtIndex (cgimg, 0, NULL); - int rot = [[props objectForKey:@"Orientation"] intValue]; - CFRelease (cgimg); - CFRelease (url); - CFRelease (s); - return rot; - -# endif /* 10.5 */ -} - -# endif /* USE_IPHONE */ - - - -/* Loads an image file and splats it onto the drawable. - The image is drawn as large as possible while preserving its aspect ratio. - If geom_ret is provided, the actual rectangle the rendered image takes - up will be returned there. - */ -Bool -osx_load_image_file (Screen *screen, Window xwindow, Drawable drawable, - const char *filename, XRectangle *geom_ret) -{ -# ifndef USE_IPHONE - - if (!filename || !*filename) return False; - - NSImage *img = [[NSImage alloc] initWithContentsOfFile: - [NSString stringWithCString:filename - encoding:NSUTF8StringEncoding]]; - if (!img) - return False; - - jwxyz_draw_NSImage_or_CGImage (DisplayOfScreen (screen), drawable, - True, img, geom_ret, - exif_rotation (filename)); - [img release]; - return True; - -# else /* USE_IPHONE */ - - /* This is handled differently: see grabclient.c and grabclient-ios.m. */ - return False; - -# endif /* USE_IPHONE */ -} |