add QuickLook plugin for OS X, it’s embedded in the .app

2018-10-04 22:58:42 +02:00
parent c634a0647c
commit 4723bedc31
5 changed files with 584 additions and 0 deletions
--- a/QLPlugin/GenerateThumbnailForURL.c
+++ b/QLPlugin/GenerateThumbnailForURL.c
@@ -0,0 +1,102 @@
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreServices/CoreServices.h>
+#include <QuickLook/QuickLook.h>
+
+OSStatus GenerateThumbnailForURL(void *thisInterface, QLThumbnailRequestRef thumbnail, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options, CGSize maxSize);
+void CancelThumbnailGeneration(void *thisInterface, QLThumbnailRequestRef thumbnail);
+
+/* -----------------------------------------------------------------------------
+    Generate a thumbnail for file
+
+   This function's job is to create thumbnail for designated file as fast as possible
+   ----------------------------------------------------------------------------- */
+
+struct PPIThumb
+{
+    int width;
+    int height;
+    int comp;
+    /*
+    bool valid()
+    {
+        return (width == 128 && height == 128 && comp == 4);
+    }
+    */
+};
+
+struct PPIDocVersion
+{
+    int major;
+    int minor;
+};
+
+struct PPISoftVersion
+{
+    int major;
+    int minor;
+    int fix;
+    int build;
+};
+
+struct PPIHeader
+{
+    char magic[4];
+    struct PPIDocVersion doc_version;
+    struct PPISoftVersion soft_version;
+    struct PPIThumb thumb_header;
+    /*
+    bool valid()
+    {
+        if (strcmp(magic, "PPI") != 0)
+            return false;
+        if (doc_version.major != 0 || doc_version.minor != 1)
+            return false;
+        if (!thumb_header.valid())
+            return false;
+        return true;
+    }
+    */
+};
+
+OSStatus GenerateThumbnailForURL(void *thisInterface, QLThumbnailRequestRef thumbnail, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options, CGSize maxSize)
+{
+    // To complete your generator please implement the function GenerateThumbnailForURL in GenerateThumbnailForURL.c
+    //maxSize = CGSizeMake(128, 128);
+    CGContextRef context = QLThumbnailRequestCreateContext(thumbnail, maxSize, true, NULL);
+    CGRect renderRect = CGRectMake(0., 0., maxSize.width, maxSize.height);
+    
+    CFStringRef path = CFURLCopyFileSystemPath(url, kCFURLPOSIXPathStyle);
+    const char* path_string = CFStringGetCStringPtr(path, kCFStringEncodingUTF8);
+    
+    FILE* fp = fopen(path_string, "rb");
+    if (fp)
+    {
+        struct PPIHeader header;
+        fread(&header, sizeof(struct PPIHeader), 1, fp);
+        int w = header.thumb_header.width;
+        int h = header.thumb_header.height;
+        int c = header.thumb_header.comp;
+
+        CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
+        CGContextRef bmp = CGBitmapContextCreate(NULL, w, h, 8, w * c, colorSpace, kCGImageAlphaPremultipliedLast);
+        uint8_t* data = CGBitmapContextGetData(bmp);
+        fread(data, w * h * c, 1, fp);
+        fclose(fp);
+        
+        CGImageRef img = CGBitmapContextCreateImage(bmp);
+        CGContextDrawImage(context, renderRect, img);
+    }
+    else
+    {
+        CGContextSetRGBFillColor(context, 1, 0, 0, 1);
+        CGContextFillRect(context, CGRectMake(0, 0, maxSize.width, maxSize.height));
+    }
+    QLThumbnailRequestFlushContext(thumbnail, context);
+    CFRelease(context);
+    return noErr;
+}
+
+void CancelThumbnailGeneration(void *thisInterface, QLThumbnailRequestRef thumbnail)
+{
+    // Implement only if supported
+}