in artist-traits/src/main/kotlin/com/uber/artist/traits/JavaForegroundTrait.kt [46:322]
override fun generateFor(
type: TypeSpec.Builder,
initMethod: MethodSpec.Builder,
rClass: ClassName,
sourceType: String) {
val isLayout = sourceType.endsWith("Layout")
// The field
type.addField(TypeNames.Android.Drawable, "foreground", Modifier.PRIVATE)
if (isLayout) {
type.addField(FieldSpec.builder(TypeNames.Android.Rect, "selfBounds", Modifier.PRIVATE, Modifier.FINAL)
.initializer("new \$T()", TypeNames.Android.Rect)
.build())
type.addField(FieldSpec.builder(TypeNames.Android.Rect, "overlayBounds", Modifier.PRIVATE, Modifier.FINAL)
.initializer("new \$T()", TypeNames.Android.Rect)
.build())
type.addField(FieldSpec.builder(TypeName.BOOLEAN, "foregroundInPadding", Modifier.PRIVATE)
.initializer("true")
.build())
type.addField(FieldSpec.builder(TypeName.BOOLEAN, "foregroundBoundsChanged", Modifier.PRIVATE)
.initializer("false")
.build())
type.addField(FieldSpec.builder(TypeName.INT, "foregroundGravity", Modifier.PRIVATE)
.initializer("\$T.FILL", TypeNames.Android.Gravity)
.build())
}
// Pull out the value
initMethod.addStatement(
"\$T foregroundTA = context.obtainStyledAttributes(attrs, \$T.styleable.ForegroundView)",
TypeNames.Android.TypedArray,
rClass)
initMethod.addStatement(
"final \$T localForeground = foregroundTA.getDrawable(\$T.styleable.ForegroundView_android_foreground)",
TypeNames.Android.Drawable,
rClass)
initMethod.beginControlFlow("if (localForeground != null)")
initMethod.addCode("//noinspection AndroidLintNewApi\n")
initMethod.addStatement("setForeground(localForeground)")
initMethod.endControlFlow()
if (isLayout) {
initMethod.addStatement(
"foregroundGravity = foregroundTA.getInt(\$T.styleable.ForegroundView_android_foregroundGravity, " +
"foregroundGravity)", rClass)
initMethod.addStatement(
"foregroundInPadding = foregroundTA.getBoolean(" +
"\$T.styleable.ForegroundView_foregroundInsidePadding, " +
"true)", rClass)
}
initMethod.addStatement("foregroundTA.recycle()")
val onSizeChangedMethod = MethodSpec.methodBuilder("onSizeChanged")
.addAnnotation(Override::class.java)
.addModifiers(Modifier.PROTECTED)
.addParameter(TypeName.INT, "w")
.addParameter(TypeName.INT, "h")
.addParameter(TypeName.INT, "oldw")
.addParameter(TypeName.INT, "oldh")
.addStatement("super.onSizeChanged(w, h, oldw, oldh)")
if (isLayout) {
onSizeChangedMethod.addStatement("foregroundBoundsChanged = true")
} else {
onSizeChangedMethod.beginControlFlow("if (foreground != null)")
.addStatement("foreground.setBounds(0, 0, w, h)")
.endControlFlow()
}
type.addMethod(onSizeChangedMethod.build())
if (sourceType.endsWith("ImageView")) {
type.addMethod(MethodSpec.methodBuilder("hasOverlappingRendering")
.addAnnotation(Override::class.java)
.addModifiers(Modifier.PUBLIC)
.returns(TypeName.BOOLEAN)
.addStatement("return false")
.build())
}
if (isLayout) {
type.addMethod(MethodSpec.methodBuilder("getForegroundGravity")
.addJavadoc("""Describes how the foreground is positioned.
@return foreground gravity.
@see #setForegroundGravity(int)
""")
.addAnnotation(AnnotationSpec.builder(SuppressWarnings::class.java).addMember("value", "\$S", "MissingOverride").build())
.addModifiers(Modifier.PUBLIC)
.returns(TypeName.INT)
.addStatement("return foregroundGravity")
.build())
type.addMethod(MethodSpec.methodBuilder("setForegroundGravity")
.addJavadoc("""Describes how the foreground is positioned. Defaults to START and TOP.
@param foregroundGravity See {@link android.view.Gravity}
@see #getForegroundGravity()
""")
.addAnnotation(AnnotationSpec.builder(SuppressWarnings::class.java).addMember("value", "\$S", "MissingOverride").build())
.addModifiers(Modifier.PUBLIC)
.addParameter(TypeName.INT, "foregroundGravity")
.beginControlFlow("if (this.foregroundGravity != foregroundGravity)")
.beginControlFlow("if ((foregroundGravity & \$T.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0)",
TypeNames.Android.Gravity)
.addStatement("foregroundGravity |= \$T.START", TypeNames.Android.GravityCompat)
.endControlFlow()
.beginControlFlow("if ((foregroundGravity & \$T.VERTICAL_GRAVITY_MASK) == 0)",
TypeNames.Android.Gravity)
.addStatement("foregroundGravity |= \$T.TOP", TypeNames.Android.Gravity)
.endControlFlow()
.addStatement("this.foregroundGravity = foregroundGravity")
.beginControlFlow("if (this.foregroundGravity == \$T.FILL && foreground != null)",
TypeNames.Android.Gravity)
.addStatement("\$T padding = new \$T()", TypeNames.Android.Rect, TypeNames.Android.Rect)
.addStatement("foreground.getPadding(padding)")
.endControlFlow()
.addStatement("requestLayout()")
.endControlFlow()
.build())
}
type.addMethod(MethodSpec.methodBuilder("verifyDrawable")
.addAnnotation(Override::class.java)
.addModifiers(Modifier.PROTECTED)
.returns(TypeName.BOOLEAN)
.addParameter(TypeNames.Android.Drawable, "who")
.addStatement("return super.verifyDrawable(who) || (who == foreground)")
.build())
type.addMethod(MethodSpec.methodBuilder("jumpDrawablesToCurrentState")
.addAnnotation(Override::class.java)
.addModifiers(Modifier.PUBLIC)
.addStatement("super.jumpDrawablesToCurrentState()")
.beginControlFlow("if (foreground != null)")
.addStatement("foreground.jumpToCurrentState()")
.endControlFlow()
.build())
type.addMethod(MethodSpec.methodBuilder("drawableStateChanged")
.addAnnotation(Override::class.java)
.addModifiers(Modifier.PROTECTED)
.addStatement("super.drawableStateChanged()")
.beginControlFlow("if (foreground != null && foreground.isStateful())")
.addStatement("foreground.setState(getDrawableState())")
.endControlFlow()
.build())
type.addMethod(MethodSpec.methodBuilder("getForeground")
.addJavadoc("""Returns the drawable used as the foreground of this view. The
foreground drawable, if non-null, is always drawn on top of the children.
@return A Drawable or null if no foreground was set.
""")
.addAnnotation(AnnotationSpec.builder(SuppressWarnings::class.java).addMember("value", "\$S", "MissingOverride").build())
.addModifiers(Modifier.PUBLIC)
.returns(TypeNames.Android.Drawable)
.addStatement("return foreground")
.build())
val setForegroundMethod = MethodSpec.methodBuilder("setForeground")
.addJavadoc("""Supply a Drawable that is to be rendered on top of all of the child
views in this layout. Any padding in the Drawable will be taken
into account by ensuring that the children are inset to be placed
inside of the padding area.
@param drawable The Drawable to be drawn on top of the children.
""")
.addAnnotation(AnnotationSpec.builder(SuppressWarnings::class.java).addMember("value", "\$S", "MissingOverride").build())
.addAnnotation(AnnotationSpec.builder(ClassName.get("android.annotation", "SuppressLint"))
.addMember("value", "\"NewApi\"")
.build())
.addModifiers(Modifier.PUBLIC)
.addParameter(TypeNames.Android.Drawable, "drawable")
.beginControlFlow("if (foreground != drawable)")
.beginControlFlow("if (foreground != null)")
.addStatement("foreground.setCallback(null)")
.addStatement("unscheduleDrawable(foreground)")
.endControlFlow()
.addStatement("foreground = drawable")
.beginControlFlow("if (drawable != null)")
if (!isLayout) {
setForegroundMethod.addStatement("foreground.setBounds(0, 0, getWidth(), getHeight())")
}
setForegroundMethod.addStatement("setWillNotDraw(false)")
.addStatement("drawable.setCallback(this)")
.beginControlFlow("if (drawable.isStateful())")
.addStatement("drawable.setState(getDrawableState())")
.endControlFlow()
if (isLayout) {
setForegroundMethod.beginControlFlow("if (foregroundGravity == \$T.FILL)", TypeNames.Android.Gravity)
setForegroundMethod.addStatement("\$T padding = new \$T()", TypeNames.Android.Rect, TypeNames.Android.Rect)
setForegroundMethod.addStatement("drawable.getPadding(padding)")
setForegroundMethod.endControlFlow()
}
setForegroundMethod.nextControlFlow("else")
.addStatement("setWillNotDraw(true)")
.endControlFlow()
if (isLayout) {
setForegroundMethod.addStatement("requestLayout()")
}
setForegroundMethod.addStatement("invalidate()")
.endControlFlow()
type.addMethod(setForegroundMethod.build())
if (isLayout) {
type.addMethod(MethodSpec.methodBuilder("onLayout")
.addAnnotation(Override::class.java)
.addModifiers(Modifier.PROTECTED)
.addParameter(TypeName.BOOLEAN, "changed")
.addParameter(TypeName.INT, "left")
.addParameter(TypeName.INT, "top")
.addParameter(TypeName.INT, "right")
.addParameter(TypeName.INT, "bottom")
.addStatement("super.onLayout(changed, left, top, right, bottom)")
.beginControlFlow("if (changed)")
.addStatement("foregroundBoundsChanged = true")
.endControlFlow()
.build())
}
val drawMethod = MethodSpec.methodBuilder("draw")
.addAnnotation(Override::class.java)
.addModifiers(Modifier.PUBLIC)
.addParameter(TypeNames.Android.Canvas, "canvas")
.addStatement("super.draw(canvas)")
.beginControlFlow("if (foreground != null)")
if (isLayout) {
drawMethod.addStatement("final \$T localForeground = foreground", TypeNames.Android.Drawable)
.beginControlFlow("if (foregroundBoundsChanged)")
.addStatement("foregroundBoundsChanged = false")
.addStatement("final \$T localSelfBounds = selfBounds", TypeNames.Android.Rect)
.addStatement("final \$T localOverlayBounds = overlayBounds", TypeNames.Android.Rect)
.addStatement("final int w = getRight() - getLeft()")
.addStatement("final int h = getBottom() - getTop()")
.beginControlFlow("if (foregroundInPadding)")
.addStatement("localSelfBounds.set(0, 0, w, h)")
.nextControlFlow("else")
.addStatement("localSelfBounds.set(getPaddingLeft(), getPaddingTop(), w - getPaddingRight(), h - " +
"getPaddingBottom())")
.endControlFlow()
.addStatement("\$T.apply(foregroundGravity, localForeground.getIntrinsicWidth(), localForeground" +
".getIntrinsicHeight(), localSelfBounds, localOverlayBounds)", TypeNames.Android.Gravity)
.addStatement("localForeground.setBounds(localOverlayBounds)")
.endControlFlow()
.addStatement("localForeground.draw(canvas)")
} else {
drawMethod.addStatement("foreground.draw(canvas)")
}
drawMethod.endControlFlow()
type.addMethod(drawMethod.build())
type.addMethod(MethodSpec.methodBuilder("drawableHotspotChanged")
.addAnnotation(AnnotationSpec.builder(TypeNames.Annotations.TargetApi)
.addMember("value", "\$L", "android.os.Build.VERSION_CODES.LOLLIPOP")
.build())
.addAnnotation(Override::class.java)
.addModifiers(Modifier.PUBLIC)
.addParameter(TypeName.FLOAT, "x")
.addParameter(TypeName.FLOAT, "y")
.addStatement("super.drawableHotspotChanged(x, y)")
.beginControlFlow("if (foreground != null)")
.addStatement("foreground.setHotspot(x, y)")
.endControlFlow()
.build())
}