8234284: [dmg] Change DMG background image to TIFF

Reviewed-by: herrick, asemenyuk, erikj

make/CompileJavaModules.gmk

@@ -381,7 +381,7 @@ endif
 ################################################################################
 
 jdk.incubator.jpackage_COPY += .gif .png .txt .spec .script .prerm .preinst .postrm .postinst .list .sh \
-    .desktop .copyright .control .plist .template .icns .scpt .entitlements .wxs .wxl .wxi .ico .bmp
+    .desktop .copyright .control .plist .template .icns .scpt .entitlements .wxs .wxl .wxi .ico .bmp .tiff
 
 jdk.incubator.jpackage_CLEAN += .properties
 

src/jdk.incubator.jpackage/macosx/classes/jdk/incubator/jpackage/internal/MacDmgBundler.java

@@ -38,7 +38,7 @@ public class MacDmgBundler extends MacBaseInstallerBundler {
     private static final ResourceBundle I18N = ResourceBundle.getBundle(
             "jdk.incubator.jpackage.internal.resources.MacResources");
 
-    static final String DEFAULT_BACKGROUND_IMAGE="background_dmg.png";
+    static final String DEFAULT_BACKGROUND_IMAGE="background_dmg.tiff";
     static final String DEFAULT_DMG_SETUP_SCRIPT="DMGsetup.scpt";
     static final String TEMPLATE_BUNDLE_ICON = "java.icns";
 
@@ -112,7 +112,7 @@ public class MacDmgBundler extends MacBaseInstallerBundler {
     private File getConfig_VolumeBackground(
             Map<String, ? super Object> params) {
         return new File(CONFIG_ROOT.fetchFrom(params),
-                APP_NAME.fetchFrom(params) + "-background.png");
+                APP_NAME.fetchFrom(params) + "-background.tiff");
     }
 
     private File getConfig_VolumeIcon(Map<String, ? super Object> params) {
@@ -304,7 +304,7 @@ public class MacDmgBundler extends MacBaseInstallerBundler {
             File bgdir = new File(mountedRoot, ".background");
             bgdir.mkdirs();
             IOUtils.copyFile(getConfig_VolumeBackground(params),
-                    new File(bgdir, "background.png"));
+                    new File(bgdir, "background.tiff"));
 
             // Indicate that we want a custom icon
             // NB: attributes of the root directory are ignored

src/jdk.incubator.jpackage/macosx/classes/jdk/incubator/jpackage/internal/resources/DMGsetup.scpt

@@ -11,7 +11,7 @@ tell application "Finder"
     set theViewOptions to the icon view options of container window
     set arrangement of theViewOptions to not arranged
     set icon size of theViewOptions to 128
-    set background picture of theViewOptions to file ".background:background.png"
+    set background picture of theViewOptions to file ".background:background.tiff"
 
     -- Create alias for install location
     make new alias file at container window to DEPLOY_INSTALL_LOCATION with properties {name:"DEPLOY_INSTALL_NAME"}