implement window position save and restore in OSX

PanoPainter-OSX/main.cpp

@@ -7,6 +7,7 @@
 #include "app.h"
 #include "keymap.h"
 #include "main.h"
+#include "settings.h"
 #include <CoreFoundation/CoreFoundation.h>
 #include <Cocoa/Cocoa.h>
 #include <CoreVideo/CoreVideo.h>
@@ -454,11 +455,18 @@
     App::I->initLog();
     App::I->create();
     NSRect r = NSMakeRect(0, 0, App::I->width, App::I->height);
+    if (Settings::has("window-rect"))
+    {
+        glm::ivec4 wr = Settings::value<Serializer::IVec4>("window-rect");
+        r.origin = CGPointMake(wr.x, wr.y);
+        r.size = CGSizeMake(wr.z, wr.w);
+    }
     
     view = [[View alloc] initWithFrame:r];
     controller = [[Controller alloc] initWithWindow:window];
     App::I->osx_view = view;
-    
+    App::I->zoom = Settings::value_or<Serializer::Float>("ui-scale", (float)view.layer.contentsScale);
+
     auto style = NSTitledWindowMask|NSMiniaturizableWindowMask|NSResizableWindowMask|NSClosableWindowMask;
     window = [[Window alloc] initWithContentRect:r styleMask:style backing:NSBackingStoreBuffered defer:NO];
     [window setDelegate:controller];
@@ -486,6 +494,11 @@
     LOG("app launched");
     App::I->ui_thread_start();
 }
+- (void)save_ui_state
+{
+    Settings::set("window-rect", Serializer::IVec4({window.frame.origin.x,
+        window.frame.origin.y, window.frame.size.width, window.frame.size.height}));
+}
 - (void)init_dirs
 {
     NSArray* paths = NSSearchPathForDirectoriesInDomains(NSPicturesDirectory, NSUserDomainMask, YES);

PanoPainter-OSX/main.h

@@ -39,4 +39,5 @@
     View* view;
 }
 - (void)init_dirs;
+- (void)save_ui_state;
 @end