Improve detection of multiple presses with a single finger. (#19)

Change the touch logic of CrossDial and PrimaryButtonDials. Now it's based on a weighted distance with some fixed points. This also clarifies where the dial detects pad diagonals or multiple buttons.

app/src/main/java/com/swordfish/radialgamepad/SamplePadConfigs.kt

@@ -159,7 +159,7 @@ object SamplePadConfigs {
     val REMOTE =
         RadialGamePadConfig(
             sockets = 6,
-            primaryDial = PrimaryDialConfig.Cross(0),
+            primaryDial = PrimaryDialConfig.Cross(0, useDiagonals = false),
             secondaryDials = listOf(
                 SecondaryDialConfig.SingleButton(
                     1, 1, ButtonConfig(

library/src/main/java/com/swordfish/radialgamepad/library/RadialGamePad.kt

@@ -16,6 +16,8 @@
  * along with RadialGamePad.  If not, see <https://www.gnu.org/licenses/>.
  */
 
+@file:Suppress("unused")
+
 package com.swordfish.radialgamepad.library
 
 import android.content.Context
@@ -318,8 +320,7 @@ class RadialGamePad @JvmOverloads constructor(
                 configuration.rightDrawableForegroundId,
                 configuration.supportsGestures,
                 configuration.contentDescription,
-                configuration.diagonalRatio,
-                configuration.distanceFromCenter,
+                configuration.useDiagonals,
                 configuration.theme ?: gamePadConfig.theme
             )
             is PrimaryDialConfig.Stick -> StickDial(
@@ -366,8 +367,7 @@ class RadialGamePad @JvmOverloads constructor(
                     config.rightDrawableForegroundId,
                     config.supportsGestures,
                     config.contentDescription,
-                    config.diagonalRatio,
-                    config.distanceFromCenter,
+                    config.useDiagonals,
                     config.theme ?: gamePadConfig.theme
                 )
             }

library/src/main/java/com/swordfish/radialgamepad/library/config/PrimaryDialConfig.kt

@@ -30,8 +30,7 @@ sealed class PrimaryDialConfig {
      * @property id The control id. It is passed back to discriminate events.
      * @property rightDrawableId A resource drawable id for the left arrow (other arrows are obtained by rotating it)
      * @property supportsGestures The set of gestures that the button can emit. Defaults to empty.
-     * @property diagonalRatio Sets how smaller diagonal should be compared to primary direction. Defaults to 3, which corresponds to half.
-     * @property distanceFromCenter How much the drawable should be distanced from the center. Available in range [0.0, 1.0], defaults to 0.4.
+     * @property useDiagonals The controls will allow diagonal directions.
      * @property theme A RadialGamePadTheme specific for this dial. If omitted the RadialGamePad one is used.
      */
     data class Cross(
@@ -40,8 +39,7 @@ sealed class PrimaryDialConfig {
         val rightDrawableForegroundId: Int? = null,
         val contentDescription: CrossContentDescription = CrossContentDescription(),
         val supportsGestures: Set<GestureType> = emptySet(),
-        val diagonalRatio: Int = 2,
-        val distanceFromCenter: Float = 0.4f,
+        val useDiagonals: Boolean = true,
         val theme: RadialGamePadTheme? = null
     ) : PrimaryDialConfig()
 

library/src/main/java/com/swordfish/radialgamepad/library/config/RadialGamePadTheme.kt

@@ -26,13 +26,13 @@ import com.swordfish.radialgamepad.library.utils.Constants
  * @property simulatedColor A color which is displayed when control movement is simulated programmatically
  * @property textColor A color which is used to draw labels or icons on top of controls
  * @property primaryDialBackground A color which is used to draw the circular background behind the primary dial
- * @property secondaryDialBackground A color which is used to draw the circular background behind the secondary dials
+ * @property lightColor A color which is used for some light details
  */
 data class RadialGamePadTheme(
     val normalColor: Int = Constants.DEFAULT_COLOR_NORMAL,
     val pressedColor: Int = Constants.DEFAULT_COLOR_PRESSED,
     val simulatedColor: Int = Constants.DEFAULT_COLOR_NORMAL,
     val textColor: Int = Constants.DEFAULT_COLOR_TEXT,
     val primaryDialBackground: Int = Constants.DEFAULT_COLOR_BACKGROUND,
-    val secondaryDialBackground: Int = Constants.DEFAULT_COLOR_SECONDARY_BACKGROUND
+    val lightColor: Int = Constants.DEFAULT_COLOR_LIGHT
 )

library/src/main/java/com/swordfish/radialgamepad/library/config/SecondaryDialConfig.kt

@@ -74,8 +74,7 @@ sealed class SecondaryDialConfig(val index: Int, val spread: Int, val scale: Flo
      * @property rightDrawableId The optional drawable that define the shape of the right button.
      * @property rightDrawableForegroundId The optional drawable that is drawn on top with text color.
      * @property supportsGestures The set of gestures that the button can emit. Defaults to empty.
-     * @property diagonalRatio Sets how smaller diagonal should be compared to primary direction. Defaults to 2, which corresponds to a half.
-     * @property distanceFromCenter How much the drawable should be distanced from the center. Available in range [0.0, 1.0], defaults to 0.4.
+     * @property useDiagonals The controls will allow diagonal directions.
      * @property contentDescription Content description read by the screen reader. Defaults to "D-Pad".
      * @property theme A theme for this specific dial. By default it inherits the gamepad theme.
      */
@@ -87,8 +86,7 @@ sealed class SecondaryDialConfig(val index: Int, val spread: Int, val scale: Flo
         val rightDrawableForegroundId: Int? = null,
         val supportsGestures: Set<GestureType> = emptySet(),
         val contentDescription: CrossContentDescription = CrossContentDescription(),
-        val diagonalRatio: Int = 2,
-        val distanceFromCenter: Float = 0.4f,
+        val useDiagonals: Boolean = true,
         val theme: RadialGamePadTheme? = null
     ) : SecondaryDialConfig(index, scale.roundToInt(), scale)