fix thumbnail generator for iOS and open document when file clicked

PanoPainter/AppDelegate.m

@@ -38,7 +38,7 @@ void global_signal_handler(int e)
 
 - (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options
 {
-    App::I.canvas->m_canvas->project_open([url fileSystemRepresentation]);
+    App::I.open_document([url fileSystemRepresentation]);
     return true;
 }
 

PanoPainter/Info.plist

@@ -39,10 +39,10 @@
 	<true/>
 	<key>LSSupportsOpeningDocumentsInPlace</key>
 	<true/>
-	<key>NSPhotoLibraryUsageDescription</key>
-	<string>Export the panoramic to the gallery</string>
 	<key>NSMicrophoneUsageDescription</key>
 	<string>Use the audio jack for the SonarPen</string>
+	<key>NSPhotoLibraryUsageDescription</key>
+	<string>Export the panoramic to the gallery</string>
 	<key>UIFileSharingEnabled</key>
 	<true/>
 	<key>UILaunchStoryboardName</key>
@@ -86,7 +86,7 @@
 			<dict>
 				<key>public.filename-extension</key>
 				<array>
-					<string>pano</string>
+					<string>ppi</string>
 				</array>
 				<key>public.mime-type</key>
 				<string>image/ppi</string>

PanoThumb/ThumbnailProvider.m

@@ -8,6 +8,54 @@
 
 #import "ThumbnailProvider.h"
 
+
+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;
+    }
+    */
+};
+
 @implementation ThumbnailProvider
 
 - (void)provideThumbnailForFileRequest:(QLFileThumbnailRequest *)request completionHandler:(void (^)(QLThumbnailReply * _Nullable, NSError * _Nullable))handler {
@@ -35,15 +83,30 @@
         FILE* fp = fopen([u fileSystemRepresentation], "rb");
         if (fp)
         {
-            int h[3];
-            fread(h, sizeof(int), 3, 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;
 
             //uint8_t* data = (uint8_t*)malloc(h[0]*h[1]*h[2]);
             CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
-            CGContextRef bmp = CGBitmapContextCreate(NULL, h[0], h[1], 8, h[0]*h[2], colorSpace, kCGImageAlphaPremultipliedLast);
-            uint8_t* data = CGBitmapContextGetData(bmp);
-            fread(data, h[0]*h[1]*h[2], 1, fp);
+            CGContextRef bmp = CGBitmapContextCreate(NULL, w, h, 8, w*c, colorSpace, kCGImageAlphaPremultipliedLast);
+            
+            uint8_t* data_dst = (uint8_t*)CGBitmapContextGetData(bmp);
+            uint8_t* data_src = (uint8_t*)malloc(w*h*c);
+            fread(data_src, w*h*c, 1, fp);
             fclose(fp);
+            
+            for(int i = 0; i < w*h; i++)
+            {
+                data_dst[i * 4 + 0] = data_src[i * c + 0];
+                data_dst[i * 4 + 1] = data_src[i * c + 1];
+                data_dst[i * 4 + 2] = data_src[i * c + 2];
+                data_dst[i * 4 + 3] = 255;
+            }
+            
+            free(data_src);
      
             CGImageRef img = CGBitmapContextCreateImage(bmp);
             CGRect r2 = CGRectMake(0, 0, 128*request.scale, 128*request.scale);

src/app.cpp

@@ -31,6 +31,26 @@ void App::create()
     height = 1080/2;
 }
 
+void App::open_document(std::string path)
+{
+    auto start = path.rfind("/") + 1;
+    doc_name = path.substr(start, path.length() - start - strlen(".ppi"));
+    canvas->reset_camera();
+    layers->clear();
+    canvas->m_canvas->project_open(path, [this] {
+        // on complete
+        async_start();
+        title_update();
+        for (auto& i : canvas->m_canvas->m_order)
+        {
+            auto* l = layers->add_layer(canvas->m_canvas->m_layers[i].m_name.c_str());
+            l->m_opacity->m_value.x = canvas->m_canvas->m_layers[i].m_opacity;
+        }
+        async_end();
+    });
+    ActionManager::clear();
+}
+
 bool App::request_close()
 {
     static bool dialog_already_opened = false;

src/app.h

@@ -102,6 +102,7 @@ public:
     void initShaders();
     void initAssets();
     void initLayout();
+    void open_document(std::string path);
     void create();
     bool request_close();
     void terminate();

src/app_dialogs.cpp

@@ -192,22 +192,8 @@ void App::dialog_browse()
 
         dialog->btn_ok->on_click = [this, dialog](Node*)
         {
-            canvas->reset_camera();
-            layers->clear();
-            doc_name = dialog->selected_name;
-            canvas->m_canvas->project_open(dialog->selected_path, [this] {
-                // on complete
-                async_start();
-                title_update();
-                for (auto& i : canvas->m_canvas->m_order)
-                {
-                    auto* l = layers->add_layer(canvas->m_canvas->m_layers[i].m_name.c_str());
-                    l->m_opacity->m_value.x = canvas->m_canvas->m_layers[i].m_opacity;
-                }
-                async_end();
-            });
+            open_document(dialog->selected_path);
             dialog->destroy();
-            ActionManager::clear();
         };
         async_end();
     };