1 files changed, 66 insertions, 0 deletions
diff --git a/app_expo/components/screen/screen.presets.ts b/app_expo/components/screen/screen.presets.ts
new file mode 100644
index 0000000..aa8d8cf
--- /dev/null
+++ b/app_expo/components/screen/screen.presets.ts
@@ -0,0 +1,66 @@
+import { ViewStyle } from 'react-native'
+import { color } from '../../theme'
+
+/**
+ * All screen keyboard offsets.
+ */
+export const offsets = {
+  none: 0,
+}
+
+/**
+ * The variations of keyboard offsets.
+ */
+export type KeyboardOffsets = keyof typeof offsets
+
+/**
+ * All the variations of screens.
+ */
+export const presets = {
+  /**
+   * No scrolling. Suitable for full-screen carousels and components
+   * which have built-in scrolling like FlatList.
+   */
+  fixed: {
+    outer: {
+      backgroundColor: color.background,
+      flex: 1,
+      height: '100%',
+    } as ViewStyle,
+    inner: {
+      justifyContent: 'flex-start',
+      alignItems: 'stretch',
+      height: '100%',
+      width: '100%',
+    } as ViewStyle,
+  },
+
+  /**
+   * Scrolls. Suitable for forms or other things requiring a keyboard.
+   *
+   * Pick this one if you don't know which one you want yet.
+   */
+  scroll: {
+    outer: {
+      backgroundColor: color.background,
+      flex: 1,
+      height: '100%',
+    } as ViewStyle,
+    inner: { justifyContent: 'flex-start', alignItems: 'stretch' } as ViewStyle,
+  },
+}
+
+/**
+ * The variations of screens.
+ */
+export type ScreenPresets = keyof typeof presets
+
+/**
+ * Is this preset a non-scrolling one?
+ *
+ * @param preset The preset to check
+ */
+export function isNonScrolling(preset?: ScreenPresets) {
+  // any of these things will make you scroll
+  return !preset || !presets[preset] || preset === 'fixed'
+}