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/*
* Copyright 2018 Allan Wang
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.pitchedapps.frost.injectors
import android.content.Context
import android.graphics.Color
import ca.allanwang.kau.utils.adjustAlpha
import ca.allanwang.kau.utils.colorToBackground
import ca.allanwang.kau.utils.colorToForeground
import ca.allanwang.kau.utils.isColorVisibleOn
import ca.allanwang.kau.utils.toRgbaString
import ca.allanwang.kau.utils.use
import ca.allanwang.kau.utils.withAlpha
import com.pitchedapps.frost.enums.FACEBOOK_BLUE
import com.pitchedapps.frost.enums.Theme
import com.pitchedapps.frost.enums.ThemeCategory
import com.pitchedapps.frost.prefs.Prefs
import com.pitchedapps.frost.utils.L
import java.io.BufferedReader
import java.io.FileNotFoundException
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import org.koin.core.context.GlobalContext
/**
* Provides [InjectorContract] for each [ThemeCategory].
* Can be reloaded to take in changes from [Prefs]
*/
class ThemeProvider(private val context: Context, private val prefs: Prefs) {
private var theme: Theme = Theme.values[prefs.theme]
private val injectors: MutableMap<ThemeCategory, InjectorContract> = mutableMapOf()
val textColor: Int
get() = theme.textColorGetter(prefs)
val accentColor: Int
get() = theme.accentColorGetter(prefs)
val accentColorForWhite: Int
get() = when {
accentColor.isColorVisibleOn(Color.WHITE) -> accentColor
textColor.isColorVisibleOn(Color.WHITE) -> textColor
else -> FACEBOOK_BLUE
}
val nativeBgColor: Int
get() = bgColor.withAlpha(30)
fun nativeBgColor(unread: Boolean) = bgColor
.colorToForeground(if (unread) 0.7f else 0.0f)
.withAlpha(30)
val bgColor: Int
get() = theme.backgroundColorGetter(prefs)
val headerColor: Int
get() = theme.headerColorGetter(prefs)
val iconColor: Int
get() = theme.iconColorGetter(prefs)
val isCustomTheme: Boolean
get() = theme == Theme.CUSTOM
/**
* Note that while this can be loaded from any thread, it is typically done through [preload]]
*/
fun injector(category: ThemeCategory): InjectorContract =
injectors.getOrPut(category) { createInjector(category) }
/**
* Note that while this can be loaded from any thread, it is typically done through [preload]
*/
private fun createInjector(category: ThemeCategory): InjectorContract {
val file = theme.file ?: return JsActions.EMPTY
try {
var content =
context.assets.open("css/${category.folder}/themes/$file").bufferedReader()
.use(BufferedReader::readText)
if (theme == Theme.CUSTOM) {
val bt = if (Color.alpha(bgColor) == 255)
bgColor.toRgbaString()
else
"transparent"
val bb = bgColor.colorToForeground(0.35f)
content = content
.replace("\$T\$", textColor.toRgbaString())
.replace("\$TT\$", textColor.colorToBackground(0.05f).toRgbaString())
.replace("\$TD\$", textColor.adjustAlpha(0.6f).toRgbaString())
.replace("\$A\$", accentColor.toRgbaString())
.replace("\$AT\$", iconColor.toRgbaString())
.replace("\$B\$", bgColor.toRgbaString())
.replace("\$BT\$", bt)
.replace("\$BBT\$", bb.withAlpha(51).toRgbaString())
.replace("\$O\$", bgColor.withAlpha(255).toRgbaString())
.replace("\$OO\$", bb.withAlpha(255).toRgbaString())
.replace("\$D\$", textColor.adjustAlpha(0.3f).toRgbaString())
.replace("\$TI\$", bb.withAlpha(60).toRgbaString())
.replace("\$C\$", bt)
}
return JsBuilder().css(content).build()
} catch (e: FileNotFoundException) {
L.e(e) { "CssAssets file not found" }
return JsActions.EMPTY
}
}
fun setTheme(id: Int) {
theme = Theme.values[id]
reset()
}
fun reset() {
injectors.clear()
}
suspend fun preload() {
withContext(Dispatchers.IO) {
reset()
ThemeCategory.values().forEach { injector(it) }
}
}
companion object {
fun get(): ThemeProvider = GlobalContext.get().get()
fun module() = org.koin.dsl.module {
single { ThemeProvider(get(), get()) }
}
}
}
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