source/blender/blendthumb/CMakeLists.txt

@@ -21,6 +21,10 @@ set(SRC
   src/blendthumb_png.cc
 )
 
+set(LIB
+  bf_blenlib
+)
+
 if(WIN32)
   # -----------------------------------------------------------------------------
   # Build `BlendThumb.dll`
@@ -36,10 +40,14 @@ if(WIN32)
 
   add_library(BlendThumb SHARED ${SRC} ${SRC_WIN32})
 
-  target_link_libraries(BlendThumb bf_blenlib dbghelp.lib Version.lib)
+  list(APPEND LIB
+    dbghelp.lib
+    Version.lib
+  )
+  target_link_libraries(BlendThumb ${LIB})
   set_target_properties(BlendThumb PROPERTIES LINK_FLAGS_DEBUG "/NODEFAULTLIB:msvcrt")
-
-else()
+endif()
+if(UNIX AND NOT APPLE)
   # -----------------------------------------------------------------------------
   # Build `blender-thumbnailer` executable
 
@@ -49,7 +57,41 @@ else()
 
   add_executable(blender-thumbnailer ${SRC} ${SRC_CMD})
   setup_platform_linker_flags(blender-thumbnailer)
-  target_link_libraries(blender-thumbnailer bf_blenlib)
+  target_link_libraries(blender-thumbnailer ${LIB})
+  if(DEFINED PTHREADS_LIBRARIES)
+    target_link_libraries(blender-thumbnailer ${PTHREADS_LIBRARIES})
+  endif()
+endif()
+if(APPLE)
+  # -----------------------------------------------------------------------------
+  # Build `blender-thumbnailer` appex
+
+  set(SRC_CMD
+    src/ThumbnailProvider.mm
+    src/ThumbnailProvider.h
+    src/Info.plist
+  )
+
+  add_executable(blender-thumbnailer MACOSX_BUNDLE ${SRC} ${SRC_CMD})
+  set_target_properties(blender-thumbnailer PROPERTIES
+    MACOSX_BUNDLE_INFO_PLIST ${CMAKE_CURRENT_SOURCE_DIR}/src/Info.plist
+    MACOSX_FRAMEWORK_IDENTIFIER org.blenderfoundation.blender.thumbnailer)
+  set_target_properties(blender-thumbnailer PROPERTIES
+    XIB_RESOURCE "${CMAKE_CURRENT_SOURCE_DIR}/src/Base.lproj")
+  # Doesn't affect other generators. So need to specify extension for others.
+  set_target_properties(blender-thumbnailer PROPERTIES
+    XCODE_PRODUCT_TYPE com.apple.product-type.app-extension)
+  set_target_properties(blender-thumbnailer PROPERTIES
+    BUNDLE_EXTENSION appex)
+  setup_platform_linker_flags(blender-thumbnailer)
+  set_target_properties(blender-thumbnailer PROPERTIES BUILD_WITH_INSTALL_RPATH true)
+  list(APPEND LIB
+    "-framework QuickLookThumbnailing"
+    "-fobjc-link-runtime"
+    "-fapplication-extension"
+    "-e _NSExtensionMain"
+  )
+  target_link_libraries(blender-thumbnailer ${LIB})
   if(DEFINED PTHREADS_LIBRARIES)
     target_link_libraries(blender-thumbnailer ${PTHREADS_LIBRARIES})
   endif()

source/blender/blendthumb/src/Base.lproj/PreviewViewController.xib

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="11762" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
+    <dependencies>
+        <deployment identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="11762"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <customObject id="-2" userLabel="File's Owner" customClass="PreviewViewController" customModuleProvider="">
+            <connections>
+                <outlet property="view" destination="c22-O7-iKe" id="NRM-P4-wb6"/>
+            </connections>
+        </customObject>
+        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
+        <customObject id="-3" userLabel="Application" customClass="NSObject"/>
+        <customView id="c22-O7-iKe" userLabel="Preview View">
+            <rect key="frame" x="0.0" y="0.0" width="480" height="272"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+        </customView>
+    </objects>
+</document>

source/blender/blendthumb/src/Info.plist

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+	<dict>
+		<key>CFBundleDevelopmentRegion</key>
+		<string>en</string>
+		<key>CFBundleDisplayName</key>
+		<string>blender_thumbnailer</string>
+		<key>CFBundleExecutable</key>
+		<string>blender-thumbnailer</string>
+		<key>CFBundleIdentifier</key>
+		<string>org.blenderfoundation.blender.thumbnailer</string>
+		<key>CFBundleInfoDictionaryVersion</key>
+		<string>6.0</string>
+		<key>CFBundleName</key>
+		<string>blender-thumbnailer</string>
+		<key>CFBundlePackageType</key>
+		<string>XPC!</string>
+		<key>CFBundleShortVersionString</key>
+		<string>1.0</string>
+		<key>CFBundleSupportedPlatforms</key>
+		<array>
+			<string>MacOSX</string>
+		</array>
+		<key>CFBundleVersion</key>
+		<string>1</string>
+		<key>LSMinimumSystemVersion</key>
+		<string>11.3</string>
+		<key>NSExtension</key>
+		<dict>
+			<key>NSExtensionAttributes</key>
+			<dict>
+				<key>QLSupportedContentTypes</key>
+				<array>
+					<string>org.blenderfoundation.blender.file</string>
+				</array>
+				<key>QLThumbnailMinimumDimension</key>
+				<integer>0</integer>
+			</dict>
+			<key>NSExtensionPointIdentifier</key>
+			<string>com.apple.quicklook.preview</string>
+			<key>NSExtensionPrincipalClass</key>
+			<string>PreviewProvider</string>
+		</dict>
+	</dict>
+</plist>

source/blender/blendthumb/src/ThumbnailProvider.h

@@ -0,0 +1,10 @@
+#include <AppKit/AppKit.h>
+#import <Quartz/Quartz.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface PreviewViewController : NSViewController <QLPreviewingController>
+
+@end
+
+NS_ASSUME_NONNULL_END

source/blender/blendthumb/src/ThumbnailProvider.mm

@@ -0,0 +1,119 @@
+#include <cstdio>
+#include <fstream>
+#include <unistd.h>
+
+#import <Foundation/Foundation.h>
+#import <QuickLook/QLBase.h>
+#import <QuickLook/QuickLook.h>
+
+#import "ThumbnailProvider.h"
+
+#include "BLI_fileops.h"
+#include "BLI_filereader.h"
+#include "blendthumb.hh"
+
+class FileReaderRAII {
+  int src_file_ = -1;
+
+ public:
+  explicit FileReaderRAII(int src_file) : src_file_(src_file) {}
+  ~FileReaderRAII()
+  {
+    if (src_file_ != -1) {
+      close(src_file_);
+    }
+  }
+
+  bool good()
+  {
+    return src_file_ != -1;
+  }
+
+  int get()
+  {
+    return src_file_;
+  }
+};
+
+static eThumbStatus creator_impl(const char *src_blend_path)
+{
+  eThumbStatus err;
+
+  /* Open source file `src_blend`. */
+  FileReaderRAII src_file_fd = FileReaderRAII(BLI_open(src_blend_path, O_BINARY | O_RDONLY, 0));
+  if (!src_file_fd.good()) {
+    return BT_FILE_ERR;
+  }
+
+  /* Thumbnail reading is responsible for freeing `file` and closing `src_file`. */
+  FileReader *file_content = BLI_filereader_new_file(src_file_fd.get());
+  if (file_content == nullptr) {
+    return BT_FILE_ERR;
+  }
+
+  /* Extract thumbnail from file. */
+  Thumbnail thumb;
+  err = blendthumb_create_thumb_from_file(file_content, &thumb);
+  if (err != BT_OK) {
+    return err;
+  }
+
+  return err;
+}
+
+@implementation PreviewViewController
+
+- (NSString *)nibName
+{
+  return @"PreviewViewController";
+}
+
+- (void)loadView
+{
+  [super loadView];
+  // Do any additional setup after loading the view.
+}
+
+/*
+ * Implement this method and set QLSupportsSearchableItems to YES in the Info.plist of the
+extension if you support CoreSpotlight.
+ *
+- (void)preparePreviewOfSearchableItemWithIdentifier:(NSString *)identifier queryString:(NSString
+*)queryString completionHandler:(void (^)(NSError * _Nullable))handler {
+
+    // Perform any setup necessary in order to prepare the view.
+
+    // Call the completion handler so Quick Look knows that the preview is fully loaded.
+    // Quick Look will display a loading spinner while the completion handler is not called.
+
+    handler(nil);
+}
+*/
+
+- (void)preparePreviewOfFileAtURL:(NSURL *)url
+                completionHandler:(void (^)(NSError *_Nullable))handler
+{
+
+  // Add the supported content types to the QLSupportedContentTypes array in the Info.plist of the
+  // extension.
+
+  // Perform any setup necessary in order to prepare the view.
+
+  // Call the completion handler so Quick Look knows that the preview is fully loaded.
+  // Quick Look will display a loading spinner while the completion handler is not called.
+
+  NSLog(@"blender preparePreviewOfFileAtURL: %@", url);
+  std::ofstream file("/Users/ankit.kumar/apps/build_xcode/foobar.txt",
+                     std::ios::out | std::ios::trunc | std::ios::binary);
+  file << "Hello World";
+  file.close();
+  std::cout << "Hello World" << std::endl;
+  // set image to file path /Users/ankit.kumar/Desktop/Screenshot 2021-09-02 at 1.59.47 PM.png
+  [[[self view] imageRepresentation]
+      setFileURL:[NSURL fileURLWithPath:@"file:///Users/ankit.kumar/Desktop/Screenshot.png"
+                            isDirectory:NO]];
+  [[self view] display];
+  handler(nil);
+}
+
+@end

source/creator/CMakeLists.txt

@@ -1352,8 +1352,14 @@ elseif(APPLE)
   if(WITH_BLENDER_THUMBNAILER)
     install(
       TARGETS blender-thumbnailer
-      DESTINATION Blender.app/Contents/MacOS/
+      DESTINATION Blender.app/Contents/Plugins
     )
+    get_target_property(XIB_RESOURCE blender-thumbnailer XIB_RESOURCE)
+    install_dir(
+      ${XIB_RESOURCE}
+       Blender.app/Contents/Plugins/blender-thumbnailer.appex/Contents/Resources
+    )
+
   endif()
 
   if(PLATFORM_BUNDLED_LIBRARIES AND TARGETDIR_LIB)

tests/gtests/runner/CMakeLists.txt

@@ -34,7 +34,6 @@ endif()
 blender_src_gtest_ex(
   NAME blender
   SRC "${SRC}"
-  EXTRA_LIBS "${TEST_LIBS}"
   SKIP_ADD_TEST
 )
 setup_platform_linker_libs(blender_test)