diff options
Diffstat (limited to 'app/src/main/kotlin/com/pitchedapps/frost/intro/IntroMainFragments.kt')
| -rw-r--r-- | app/src/main/kotlin/com/pitchedapps/frost/intro/IntroMainFragments.kt | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/intro/IntroMainFragments.kt b/app/src/main/kotlin/com/pitchedapps/frost/intro/IntroMainFragments.kt new file mode 100644 index 00000000..552fad3b --- /dev/null +++ b/app/src/main/kotlin/com/pitchedapps/frost/intro/IntroMainFragments.kt @@ -0,0 +1,135 @@ +package com.pitchedapps.frost.intro + +import android.annotation.SuppressLint +import android.content.res.ColorStateList +import android.os.Bundle +import android.support.constraint.ConstraintLayout +import android.support.v4.app.Fragment +import android.view.LayoutInflater +import android.view.View +import android.view.ViewGroup +import android.widget.ImageView +import android.widget.TextView +import ca.allanwang.kau.kotlin.LazyResettableRegistry +import ca.allanwang.kau.utils.Kotterknife +import ca.allanwang.kau.utils.bindViewResettable +import ca.allanwang.kau.utils.setOnSingleTapListener +import com.pitchedapps.frost.R +import com.pitchedapps.frost.activities.IntroActivity +import com.pitchedapps.frost.utils.Prefs +import org.jetbrains.anko.childrenSequence + +/** + * Created by Allan Wang on 2017-07-28. + * + * Contains the base, start, and end fragments + */ + +/** + * The core intro fragment for all other fragments + */ +abstract class BaseIntroFragment(val layoutRes: Int) : Fragment() { + + val screenWidth + get() = resources.displayMetrics.widthPixels + + val lazyRegistry = LazyResettableRegistry() + + protected fun translate(offset: Float, views: Array<Array<out View>>) { + val maxTranslation = offset * screenWidth + val increment = maxTranslation / views.size + views.forEachIndexed { i, group -> + group.forEach { + it.translationX = if (offset > 0) -maxTranslation + i * increment else -(i + 1) * increment + it.alpha = 1 - Math.abs(offset) + } + } + } + + fun <T : Any> lazyResettableRegistered(initializer: () -> T) = lazyRegistry.lazy(initializer) + + /* + * Note that these ids aren't actually inside all layouts + * However, they are in most of them, so they are added here + * for convenience + */ + protected val title: TextView by bindViewResettable(R.id.intro_title) + protected val image: ImageView by bindViewResettable(R.id.intro_image) + protected val desc: TextView by bindViewResettable(R.id.intro_desc) + + protected fun defaultViewArray(): Array<Array<out View>> = arrayOf(arrayOf(title), arrayOf(image), arrayOf(desc)) + + override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? { + val view = inflater.inflate(layoutRes, container, false) + return view + } + + override fun onViewCreated(view: View?, savedInstanceState: Bundle?) { + super.onViewCreated(view, savedInstanceState) + themeFragment() + } + + override fun onDestroyView() { + super.onDestroyView() + Kotterknife.reset(this) + lazyRegistry.invalidateAll() + } + + fun themeFragment() { + if (view != null) themeFragmentImpl() + } + + protected open fun themeFragmentImpl() { + view?.childrenSequence()?.forEach { (it as? TextView)?.setTextColor(Prefs.textColor) } + } + + protected val viewArray: Array<Array<out View>> by lazyResettableRegistered { viewArray() } + + protected abstract fun viewArray(): Array<Array<out View>> + + fun onPageScrolled(positionOffset: Float) { + if (view != null) onPageScrolledImpl(positionOffset) + } + + protected open fun onPageScrolledImpl(positionOffset: Float) { + translate(positionOffset, viewArray) + } + + fun onPageSelected() { + if (view != null) onPageSelectedImpl() + } + + protected open fun onPageSelectedImpl() { + + } +} + +class IntroFragmentWelcome : BaseIntroFragment(R.layout.intro_welcome) { + + override fun viewArray(): Array<Array<out View>> = defaultViewArray() + + override fun themeFragmentImpl() { + super.themeFragmentImpl() + image.imageTintList = ColorStateList.valueOf(Prefs.textColor) + } +} + +class IntroFragmentEnd : BaseIntroFragment(R.layout.intro_end) { + + val container: ConstraintLayout by bindViewResettable(R.id.intro_end_container) + + override fun viewArray(): Array<Array<out View>> = defaultViewArray() + + override fun themeFragmentImpl() { + super.themeFragmentImpl() + image.imageTintList = ColorStateList.valueOf(Prefs.textColor) + } + + @SuppressLint("ClickableViewAccessibility") + override fun onViewCreated(view: View?, savedInstanceState: Bundle?) { + super.onViewCreated(view, savedInstanceState) + container.setOnSingleTapListener { _, event -> + (activity as IntroActivity).finish(event.x, event.y) + } + } +}
\ No newline at end of file |