package org.thoughtcrime.securesms.components; import android.content.Context; import android.graphics.drawable.Drawable; import android.graphics.drawable.GradientDrawable; import android.graphics.drawable.LayerDrawable; import org.thoughtcrime.securesms.R; public class BubbleDrawableBuilder { private int color; private int shadowColor; private boolean hasShadow = true; private boolean[] corners = new boolean[]{true,true,true,true}; protected BubbleDrawableBuilder() { } public BubbleDrawableBuilder setColor(int color) { this.color = color; return this; } public BubbleDrawableBuilder setShadowColor(int shadowColor) { this.shadowColor = shadowColor; return this; } public BubbleDrawableBuilder setHasShadow(boolean hasShadow) { this.hasShadow = hasShadow; return this; } public BubbleDrawableBuilder setCorners(boolean[] corners) { this.corners = corners; return this; } public Drawable create(Context context) { final GradientDrawable bubble = new GradientDrawable(); final int radius = context.getResources().getDimensionPixelSize(R.dimen.message_bubble_corner_radius); final float[] radii = cornerBooleansToRadii(corners, radius); bubble.setColor(color); bubble.setCornerRadii(radii); if (!hasShadow) { return bubble; } else { final GradientDrawable shadow = new GradientDrawable(); final int distance = context.getResources().getDimensionPixelSize(R.dimen.message_bubble_shadow_distance); shadow.setColor(shadowColor); shadow.setCornerRadii(radii); final LayerDrawable layers = new LayerDrawable(new Drawable[]{shadow, bubble}); layers.setLayerInset(1, 0, 0, 0, distance); return layers; } } private float[] cornerBooleansToRadii(boolean[] corners, int radius) { if (corners == null || corners.length != 4) { throw new AssertionError("there are four corners in a rectangle, silly"); } float[] radii = new float[8]; int i = 0; for (boolean corner : corners) { radii[i] = radii[i+1] = corner ? radius : 0; i += 2; } return radii; } }