Add ColorPalette

2023-04-04 13:43:30 +02:00 · 2023-04-04 13:43:30 +02:00 · b8ca143b60
commit b8ca143b60
parent c8710356dc
1 changed files with 77 additions and 0 deletions
--- a/app/src/main/java/be/ugent/sel/studeez/common/ColorPalette.kt
+++ b/app/src/main/java/be/ugent/sel/studeez/common/ColorPalette.kt
@ -0,0 +1,77 @@
+package be.ugent.sel.studeez.common
+
+import androidx.compose.material.Colors
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.toArgb
+import androidx.core.graphics.ColorUtils
+
+// Contains all colours that are used in the app. Currenlty, only light-theme colours are available.
+// Reference colour palette: https://xd.adobe.com/view/3cb1e6ff-eb42-4a74-886e-7739c2ccc5ed-69e2/
+// Use colours by calling (for example)
+// ColorPalette.HIGH_EMPHASIS.onPrimary
+
+class ColorPalette {
+    companion object {
+        // Use High emphasis colours if the thing is important.
+        val HIGH_EMPHASIS: Colors = Colors(
+            isLight = true,
+            primary =           Color( 30, 100, 200, 255),
+            primaryVariant =    Color( 27,  90, 180, 255),
+            secondary =         Color(255, 210,   0, 255),
+            secondaryVariant =  Color(253, 217,  49, 255),
+            background =        Color.White,
+            surface =           Color.White,
+            error =             Color(176,   0,  32, 255),
+            onPrimary =         Color.White,
+            onSecondary =       Color.Black,
+            onBackground =      Color.Black,
+            onSurface =         Color.Black,
+            onError =           Color.White
+        )
+
+        // Use medium emphasis colours if the thing is less important
+        // or when another thing is selected while this one is not.
+        val MEDIUM_EMPHASIS: Colors = Colors(
+            isLight = true,
+            primary =           Color( 30, 100, 200, 188),
+            primaryVariant =    Color( 27,  90, 180, 188),
+            secondary =         Color(255, 210,   0, 188),
+            secondaryVariant =  Color(253, 217,  49, 188),
+            background =        Color(255, 255, 255, 188),
+            surface =           Color(255, 255, 255, 188),
+            error =             Color(176,   0,  32, 188),
+            onPrimary =         Color(255, 255, 255, 188),
+            onSecondary =       Color(  0,   0,   0, 188),
+            onBackground =      Color(  0,   0,   0, 188),
+            onSurface =         Color(  0,   0,   0, 188),
+            onError =           Color(255, 255, 255, 188)
+        )
+
+        // Use disabled colours if the thing is disabled, probably a button.
+        val DISABLED: Colors = Colors(
+            isLight = true,
+            primary =           Color( 30, 100, 200,  97),
+            primaryVariant =    Color( 27,  90, 180,  97),
+            secondary =         Color(255, 210,   0,  97),
+            secondaryVariant =  Color(253, 217,  49,  97),
+            background =        Color(255, 255, 255,  97),
+            surface =           Color(255, 255, 255,  97),
+            error =             Color(176,   0,  32,  97),
+            onPrimary =         Color(255, 255, 255,  97),
+            onSecondary =       Color(  0,   0,   0,  97),
+            onBackground =      Color(  0,   0,   0,  97),
+            onSurface =         Color(  0,   0,   0,  97),
+            onError =           Color(255, 255, 255,  97)
+        )
+
+        // Experimental function to darken colours if needed.
+        fun darken(color: Color, amount: Float): Color {
+            return Color(ColorUtils.blendARGB(color.toArgb(), Color.Black.toArgb(), amount))
+        }
+
+        // Experimental function to lighten colours if needed.
+        fun lighten(color: Color, amount: Float): Color {
+            return Color(ColorUtils.blendARGB(color.toArgb(), Color.White.toArgb(), amount))
+        }
+    }
+}