iOS Export: add option to use storyboard for launch screen

misc/dist/ios_xcode/godot_ios.xcodeproj/project.pbxproj

@@ -14,6 +14,7 @@
 		D07CD44E1C5D589C00B7FB28 /* Images.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = D07CD44D1C5D589C00B7FB28 /* Images.xcassets */; };
 		D0BCFE4618AEBDA2004A7AAE /* InfoPlist.strings in Resources */ = {isa = PBXBuildFile; fileRef = D0BCFE4418AEBDA2004A7AAE /* InfoPlist.strings */; };
 		D0BCFE7818AEBFEB004A7AAE /* $binary.pck in Resources */ = {isa = PBXBuildFile; fileRef = D0BCFE7718AEBFEB004A7AAE /* $binary.pck */; };
+		$pbx_launch_screen_build_reference
 /* End PBXBuildFile section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -41,6 +42,7 @@
 		D0BCFE4318AEBDA2004A7AAE /* $binary-Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = "$binary-Info.plist"; sourceTree = "<group>"; };
 		D0BCFE4518AEBDA2004A7AAE /* en */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = en; path = en.lproj/InfoPlist.strings; sourceTree = "<group>"; };
 		D0BCFE7718AEBFEB004A7AAE /* $binary.pck */ = {isa = PBXFileReference; lastKnownFileType = file; path = "$binary.pck"; sourceTree = "<group>"; };
+		$pbx_launch_screen_file_reference
 /* End PBXFileReference section */
 
 		$additional_pbx_files
@@ -92,6 +94,7 @@
 		D0BCFE4118AEBDA2004A7AAE /* $binary */ = {
 			isa = PBXGroup;
 			children = (
+				$pbx_launch_screen_copy_files
 				1FF4C1881F584E6300A41E41 /* $binary.entitlements */,
 				D07CD44D1C5D589C00B7FB28 /* Images.xcassets */,
 				D0BCFE4218AEBDA2004A7AAE /* Supporting Files */,
@@ -247,6 +250,7 @@
 			files = (
 				D07CD44E1C5D589C00B7FB28 /* Images.xcassets in Resources */,
 				D0BCFE7818AEBFEB004A7AAE /* $binary.pck in Resources */,
+				$pbx_launch_screen_build_phase
 				D0BCFE4618AEBDA2004A7AAE /* InfoPlist.strings in Resources */,
 				$additional_pbx_resources_build
 			);
@@ -367,7 +371,7 @@
 			buildSettings = {
 				ARCHS = "$godot_archs";
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				ASSETCATALOG_COMPILER_LAUNCHIMAGE_NAME = LaunchImage;
+				$pbx_launch_image_usage_setting
 				CODE_SIGN_ENTITLEMENTS = "$binary/$binary.entitlements";
 				CODE_SIGN_IDENTITY = "$code_sign_identity_debug";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "$code_sign_identity_debug";
@@ -397,7 +401,7 @@
 			buildSettings = {
 				ARCHS = "$godot_archs";
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				ASSETCATALOG_COMPILER_LAUNCHIMAGE_NAME = LaunchImage;
+				$pbx_launch_image_usage_setting
 				CODE_SIGN_ENTITLEMENTS = "$binary/$binary.entitlements";
 				CODE_SIGN_IDENTITY = "$code_sign_identity_release";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "$code_sign_identity_release";

misc/dist/ios_xcode/godot_ios/Images.xcassets/SplashImage.imageset/Contents.json

@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "splash@2x.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "filename" : "splash@3x.png",
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

misc/dist/ios_xcode/godot_ios/Launch Screen.storyboard

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16097" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="$launch_screen_image_mode" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="SplashImage" translatesAutoresizingMaskIntoConstraints="NO" id="tjZ-vn-Lsv">
+                                <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" $launch_screen_background_color colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="tjZ-vn-Lsv" firstAttribute="top" secondItem="Ze5-6b-2t3" secondAttribute="top" id="Ak7-I4-yrQ"/>
+                            <constraint firstAttribute="trailing" secondItem="tjZ-vn-Lsv" secondAttribute="trailing" id="Fon-JO-5cz"/>
+                            <constraint firstItem="tjZ-vn-Lsv" firstAttribute="leading" secondItem="Ze5-6b-2t3" secondAttribute="leading" id="bkx-rj-PKc"/>
+                            <constraint firstAttribute="bottom" secondItem="tjZ-vn-Lsv" secondAttribute="bottom" id="yjq-MJ-tym"/>
+                        </constraints>
+                        <viewLayoutGuide key="safeArea" id="Bcu-3y-fUS"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="52.173913043478265" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="SplashImage" width="266.66665649414062" height="200"/>
+    </resources>
+</document>

misc/dist/ios_xcode/godot_ios/godot_ios-Info.plist

@@ -57,5 +57,6 @@
 		$interface_orientations
 	</array>
 	$additional_plist_content
+	$plist_launch_screen_name
 </dict>
 </plist>

platform/iphone/export/export.cpp

@@ -92,7 +92,8 @@ class EditorExportPlatformIOS : public EditorExportPlatform {
 	String _get_linker_flags();
 	String _get_cpp_code();
 	void _fix_config_file(const Ref<EditorExportPreset> &p_preset, Vector<uint8_t> &pfile, const IOSConfigData &p_config, bool p_debug);
-	Error _export_loading_screens(const Ref<EditorExportPreset> &p_preset, const String &p_dest_dir);
+	Error _export_loading_screen_images(const Ref<EditorExportPreset> &p_preset, const String &p_dest_dir);
+	Error _export_loading_screen_file(const Ref<EditorExportPreset> &p_preset, const String &p_dest_dir);
 	Error _export_icons(const Ref<EditorExportPreset> &p_preset, const String &p_iconset_dir);
 
 	Vector<ExportArchitecture> _get_supported_architectures();
@@ -255,6 +256,8 @@ void EditorExportPlatformIOS::get_export_options(List<ExportOption> *r_options)
 	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "optional_icons/spotlight_40x40", PROPERTY_HINT_FILE, "*.png"), "")); // Spotlight
 	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "optional_icons/spotlight_80x80", PROPERTY_HINT_FILE, "*.png"), "")); // Spotlight on devices with retina display
 
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "storyboard/use_launch_screen_storyboard"), false));
+
 	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "launch_screens/generate_missing"), false));
 
 	for (uint64_t i = 0; i < sizeof(loading_screen_infos) / sizeof(loading_screen_infos[0]); ++i) {
@@ -390,6 +393,48 @@ void EditorExportPlatformIOS::_fix_config_file(const Ref<EditorExportPreset> &p_
 		} else if (lines[i].find("$photolibrary_usage_description") != -1) {
 			String description = p_preset->get("privacy/photolibrary_usage_description");
 			strnew += lines[i].replace("$photolibrary_usage_description", description) + "\n";
+		} else if (lines[i].find("$plist_launch_screen_name") != -1) {
+			bool is_on = p_preset->get("storyboard/use_launch_screen_storyboard");
+			String value = is_on ? "<key>UILaunchStoryboardName</key>\n<string>Launch Screen</string>" : "";
+			strnew += lines[i].replace("$plist_launch_screen_name", value) + "\n";
+		} else if (lines[i].find("$pbx_launch_screen_file_reference") != -1) {
+			bool is_on = p_preset->get("storyboard/use_launch_screen_storyboard");
+			String value = is_on ? "90DD2D9D24B36E8000717FE1 = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = file.storyboard; path = \"Launch Screen.storyboard\"; sourceTree = \"<group>\"; };" : "";
+			strnew += lines[i].replace("$pbx_launch_screen_file_reference", value) + "\n";
+		} else if (lines[i].find("$pbx_launch_screen_copy_files") != -1) {
+			bool is_on = p_preset->get("storyboard/use_launch_screen_storyboard");
+			String value = is_on ? "90DD2D9D24B36E8000717FE1 /* Launch Screen.storyboard */," : "";
+			strnew += lines[i].replace("$pbx_launch_screen_copy_files", value) + "\n";
+		} else if (lines[i].find("$pbx_launch_screen_build_phase") != -1) {
+			bool is_on = p_preset->get("storyboard/use_launch_screen_storyboard");
+			String value = is_on ? "90DD2D9E24B36E8000717FE1 /* Launch Screen.storyboard in Resources */," : "";
+			strnew += lines[i].replace("$pbx_launch_screen_build_phase", value) + "\n";
+		} else if (lines[i].find("$pbx_launch_screen_build_reference") != -1) {
+			bool is_on = p_preset->get("storyboard/use_launch_screen_storyboard");
+			String value = is_on ? "90DD2D9E24B36E8000717FE1 /* Launch Screen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 90DD2D9D24B36E8000717FE1 /* Launch Screen.storyboard */; };" : "";
+			strnew += lines[i].replace("$pbx_launch_screen_build_reference", value) + "\n";
+		} else if (lines[i].find("$pbx_launch_image_usage_setting") != -1) {
+			bool is_on = p_preset->get("storyboard/use_launch_screen_storyboard");
+			String value = is_on ? "" : "ASSETCATALOG_COMPILER_LAUNCHIMAGE_NAME = LaunchImage;";
+			strnew += lines[i].replace("$pbx_launch_image_usage_setting", value) + "\n";
+		} else if (lines[i].find("$launch_screen_image_mode") != -1) {
+			String logo_path = ProjectSettings::get_singleton()->get("application/boot_splash/image");
+			bool is_on = ProjectSettings::get_singleton()->get("application/boot_splash/fullsize");
+			// If custom logo is not specified, Godot does not scale default one, so we should do the same.
+			String value = (is_on && logo_path.length() > 0) ? "scaleAspectFit" : "center";
+			strnew += lines[i].replace("$launch_screen_image_mode", value) + "\n";
+		} else if (lines[i].find("$launch_screen_background_color") != -1) {
+			Color color = ProjectSettings::get_singleton()->get("application/boot_splash/bg_color");
+			const String value_format = "red=\"$red\" green=\"$green\" blue=\"$blue\" alpha=\"$alpha\"";
+
+			Dictionary value_dictionary;
+			value_dictionary["red"] = color.r;
+			value_dictionary["green"] = color.g;
+			value_dictionary["blue"] = color.b;
+			value_dictionary["alpha"] = color.a;
+			String value = value_format.format(value_dictionary, "$_");
+
+			strnew += lines[i].replace("$launch_screen_background_color", value) + "\n";
 		} else {
 			strnew += lines[i] + "\n";
 		}
@@ -591,7 +636,42 @@ Error EditorExportPlatformIOS::_export_icons(const Ref<EditorExportPreset> &p_pr
 	return OK;
 }
 
-Error EditorExportPlatformIOS::_export_loading_screens(const Ref<EditorExportPreset> &p_preset, const String &p_dest_dir) {
+Error EditorExportPlatformIOS::_export_loading_screen_file(const Ref<EditorExportPreset> &p_preset, const String &p_dest_dir) {
+	Ref<Image> splash;
+
+	const String splash_path = ProjectSettings::get_singleton()->get("application/boot_splash/image");
+
+	if (!splash_path.empty()) {
+		splash.instance();
+		const Error err = splash->load(splash_path);
+		if (err) {
+			splash.unref();
+		}
+	}
+
+	if (splash.is_null()) {
+		splash = Ref<Image>(memnew(Image(boot_splash_png)));
+	}
+
+	// Using same image for both @2x and @3x
+	// because Godot's own boot logo uses single image for all resolutions.
+	// Also not using @1x image, because devices using this image variant
+	// are not supported by iOS 9, which is minimal target.
+	const String splash_png_path_2x = p_dest_dir.plus_file("splash@2x.png");
+	const String splash_png_path_3x = p_dest_dir.plus_file("splash@3x.png");
+
+	if (splash->save_png(splash_png_path_2x) != OK) {
+		return ERR_FILE_CANT_WRITE;
+	}
+
+	if (splash->save_png(splash_png_path_3x) != OK) {
+		return ERR_FILE_CANT_WRITE;
+	}
+
+	return OK;
+}
+
+Error EditorExportPlatformIOS::_export_loading_screen_images(const Ref<EditorExportPreset> &p_preset, const String &p_dest_dir) {
 	DirAccess *da = DirAccess::open(p_dest_dir);
 	ERR_FAIL_COND_V_MSG(!da, ERR_CANT_OPEN, "Cannot open directory '" + p_dest_dir + "'.");
 
@@ -1172,6 +1252,7 @@ Error EditorExportPlatformIOS::export_project(const Ref<EditorExportPreset> &p_p
 	files_to_parse.insert("godot_ios.xcodeproj/project.xcworkspace/contents.xcworkspacedata");
 	files_to_parse.insert("godot_ios.xcodeproj/xcshareddata/xcschemes/godot_ios.xcscheme");
 	files_to_parse.insert("godot_ios/godot_ios.entitlements");
+	files_to_parse.insert("godot_ios/Launch Screen.storyboard");
 
 	IOSConfigData config_data = {
 		pkg_name,
@@ -1347,7 +1428,43 @@ Error EditorExportPlatformIOS::export_project(const Ref<EditorExportPreset> &p_p
 		return err;
 	}
 
-	err = _export_loading_screens(p_preset, dest_dir + binary_name + "/Images.xcassets/LaunchImage.launchimage/");
+	bool use_storyboard = p_preset->get("storyboard/use_launch_screen_storyboard");
+
+	String launch_image_path = dest_dir + binary_name + "/Images.xcassets/LaunchImage.launchimage/";
+	String splash_image_path = dest_dir + binary_name + "/Images.xcassets/SplashImage.imageset/";
+
+	DirAccess *launch_screen_da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+
+	if (!launch_screen_da) {
+		return ERR_CANT_CREATE;
+	}
+
+	if (use_storyboard) {
+		print_line("Using Launch Storyboard");
+
+		if (launch_screen_da->change_dir(launch_image_path) == OK) {
+			launch_screen_da->erase_contents_recursive();
+			launch_screen_da->remove(launch_image_path);
+		}
+
+		err = _export_loading_screen_file(p_preset, splash_image_path);
+	} else {
+		print_line("Using Launch Images");
+
+		const String launch_screen_path = dest_dir + binary_name + "/Launch Screen.storyboard";
+
+		launch_screen_da->remove(launch_screen_path);
+
+		if (launch_screen_da->change_dir(splash_image_path) == OK) {
+			launch_screen_da->erase_contents_recursive();
+			launch_screen_da->remove(splash_image_path);
+		}
+
+		err = _export_loading_screen_images(p_preset, launch_image_path);
+	}
+
+	memdelete(launch_screen_da);
+
 	if (err) {
 		return err;
 	}