-
-
Notifications
You must be signed in to change notification settings - Fork 34
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
(nut-tree/nut.js#469) Adapt changes from bolt to libnut screengrab im…
…plementation (#160)
- Loading branch information
Showing
3 changed files
with
141 additions
and
67 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file was deleted.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| #include "../screengrab.h" | ||
| #include "../endian.h" | ||
| #include <stdlib.h> /* malloc() */ | ||
|
|
||
| #include <ApplicationServices/ApplicationServices.h> | ||
| #import <Cocoa/Cocoa.h> | ||
|
|
||
| static double getPixelDensity() { | ||
| @autoreleasepool | ||
| { | ||
| NSScreen * mainScreen = [NSScreen | ||
| mainScreen]; | ||
| if (mainScreen) { | ||
| return mainScreen.backingScaleFactor; | ||
| } else { | ||
| return 1.0; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| MMBitmapRef copyMMBitmapFromDisplayInRect(MMRect rect) { | ||
|
|
||
| CGDirectDisplayID displayID = CGMainDisplayID(); | ||
|
|
||
| CGImageRef image = CGDisplayCreateImageForRect(displayID, | ||
| CGRectMake( | ||
| rect.origin.x, | ||
| rect.origin.y, | ||
| rect.size.width, | ||
| rect.size.height | ||
| ) | ||
| ); | ||
|
|
||
| if (!image) { return NULL; } | ||
|
|
||
| CFDataRef imageData = CGDataProviderCopyData(CGImageGetDataProvider(image)); | ||
|
|
||
| if (!imageData) { return NULL; } | ||
|
|
||
| long bufferSize = CFDataGetLength(imageData); | ||
| size_t bytesPerPixel = (size_t) (CGImageGetBitsPerPixel(image) / 8); | ||
| double pixelDensity = getPixelDensity(); | ||
| long expectedBufferSize = rect.size.width * pixelDensity * rect.size.height * pixelDensity * bytesPerPixel; | ||
|
|
||
| if (expectedBufferSize < bufferSize) { | ||
| size_t reportedByteWidth = CGImageGetBytesPerRow(image); | ||
| size_t expectedByteWidth = expectedBufferSize / (rect.size.height * pixelDensity); | ||
|
|
||
| uint8_t *buffer = malloc(expectedBufferSize); | ||
|
|
||
| const uint8_t *dataPointer = CFDataGetBytePtr(imageData); | ||
| size_t parts = bufferSize / reportedByteWidth; | ||
|
|
||
| for (size_t idx = 0; idx < parts - 1; ++idx) { | ||
| memcpy(buffer + (idx * expectedByteWidth), | ||
| dataPointer + (idx * reportedByteWidth), | ||
| expectedByteWidth | ||
| ); | ||
| } | ||
|
|
||
| MMBitmapRef bitmap = createMMBitmap(buffer, | ||
| rect.size.width * pixelDensity, | ||
| rect.size.height * pixelDensity, | ||
| expectedByteWidth, | ||
| CGImageGetBitsPerPixel(image), | ||
| CGImageGetBitsPerPixel(image) / 8); | ||
|
|
||
| CFRelease(imageData); | ||
| CGImageRelease(image); | ||
|
|
||
| return bitmap; | ||
| } else { | ||
| uint8_t *buffer = malloc(bufferSize); | ||
| CFDataGetBytes(imageData, CFRangeMake(0, bufferSize), buffer); | ||
| MMBitmapRef bitmap = createMMBitmap(buffer, | ||
| CGImageGetWidth(image), | ||
| CGImageGetHeight(image), | ||
| CGImageGetBytesPerRow(image), | ||
| CGImageGetBitsPerPixel(image), | ||
| CGImageGetBitsPerPixel(image) / 8); | ||
|
|
||
| CFRelease(imageData); | ||
|
|
||
| CGImageRelease(image); | ||
|
|
||
| return bitmap; | ||
| } | ||
| } |