Mercurial > dwindows
comparison android/DWindows.kt @ 2713:6594bb323ab5
Android: Import Colow Wheel by Anton Popov.
Add copyrights to comply with the MIT license Color Wheel is under.
Will keep this in until Android provides us with a native color picker.
author | bsmith@81767d24-ef19-dc11-ae90-00e081727c95 |
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date | Fri, 03 Dec 2021 00:00:28 +0000 |
parents | 3cb5aa73dace |
children | 26bb1e4a97d0 |
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2712:ada3ac4677f6 | 2713:6594bb323ab5 |
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1 // (C) 2021 Brian Smith <brian@dbsoft.org> | |
2 // (C) 2019 Anton Popov | |
1 package org.dbsoft.dwindows | 3 package org.dbsoft.dwindows |
2 | 4 |
3 import android.R | 5 import android.R |
4 import android.annotation.SuppressLint | 6 import android.annotation.SuppressLint |
5 import android.app.Activity | 7 import android.app.Activity |
23 import android.provider.MediaStore | 25 import android.provider.MediaStore |
24 import android.text.InputFilter | 26 import android.text.InputFilter |
25 import android.text.InputFilter.LengthFilter | 27 import android.text.InputFilter.LengthFilter |
26 import android.text.InputType | 28 import android.text.InputType |
27 import android.text.method.PasswordTransformationMethod | 29 import android.text.method.PasswordTransformationMethod |
28 import android.util.Base64 | |
29 import android.util.Log | |
30 import android.util.SparseBooleanArray | |
31 import android.util.TypedValue | |
32 import android.view.* | 30 import android.view.* |
33 import android.view.View.OnTouchListener | 31 import android.view.View.OnTouchListener |
34 import android.view.ViewGroup | 32 import android.view.ViewGroup |
35 import android.view.inputmethod.EditorInfo | 33 import android.view.inputmethod.EditorInfo |
36 import android.webkit.WebView | 34 import android.webkit.WebView |
61 import java.util.* | 59 import java.util.* |
62 import java.util.concurrent.locks.ReentrantLock | 60 import java.util.concurrent.locks.ReentrantLock |
63 import java.util.zip.ZipEntry | 61 import java.util.zip.ZipEntry |
64 import java.util.zip.ZipFile | 62 import java.util.zip.ZipFile |
65 import android.content.Intent | 63 import android.content.Intent |
66 | 64 import android.util.* |
65 import android.util.Base64 | |
66 import kotlin.math.* | |
67 | |
68 // Color Wheel section | |
69 private val HUE_COLORS = intArrayOf( | |
70 Color.RED, | |
71 Color.YELLOW, | |
72 Color.GREEN, | |
73 Color.CYAN, | |
74 Color.BLUE, | |
75 Color.MAGENTA, | |
76 Color.RED | |
77 ) | |
78 | |
79 private val SATURATION_COLORS = intArrayOf( | |
80 Color.WHITE, | |
81 setAlpha(Color.WHITE, 0) | |
82 ) | |
83 | |
84 open class ColorWheel @JvmOverloads constructor( | |
85 context: Context, | |
86 attrs: AttributeSet? = null, | |
87 defStyleAttr: Int = 0 | |
88 ) : View(context, attrs, defStyleAttr) { | |
89 | |
90 private val hueGradient = GradientDrawable().apply { | |
91 gradientType = GradientDrawable.SWEEP_GRADIENT | |
92 shape = GradientDrawable.OVAL | |
93 colors = HUE_COLORS | |
94 } | |
95 | |
96 private val saturationGradient = GradientDrawable().apply { | |
97 gradientType = GradientDrawable.RADIAL_GRADIENT | |
98 shape = GradientDrawable.OVAL | |
99 colors = SATURATION_COLORS | |
100 } | |
101 | |
102 private val thumbDrawable = ThumbDrawable() | |
103 private val hsvColor = HsvColor(value = 1f) | |
104 | |
105 private var wheelCenterX = 0 | |
106 private var wheelCenterY = 0 | |
107 private var wheelRadius = 0 | |
108 private var downX = 0f | |
109 private var downY = 0f | |
110 | |
111 var rgb | |
112 get() = hsvColor.rgb | |
113 set(rgb) { | |
114 hsvColor.rgb = rgb | |
115 hsvColor.set(value = 1f) | |
116 fireColorListener() | |
117 invalidate() | |
118 } | |
119 | |
120 var thumbRadius | |
121 get() = thumbDrawable.radius | |
122 set(value) { | |
123 thumbDrawable.radius = value | |
124 invalidate() | |
125 } | |
126 | |
127 var thumbColor | |
128 get() = thumbDrawable.thumbColor | |
129 set(value) { | |
130 thumbDrawable.thumbColor = value | |
131 invalidate() | |
132 } | |
133 | |
134 var thumbStrokeColor | |
135 get() = thumbDrawable.strokeColor | |
136 set(value) { | |
137 thumbDrawable.strokeColor = value | |
138 invalidate() | |
139 } | |
140 | |
141 var thumbColorCircleScale | |
142 get() = thumbDrawable.colorCircleScale | |
143 set(value) { | |
144 thumbDrawable.colorCircleScale = value | |
145 invalidate() | |
146 } | |
147 | |
148 var colorChangeListener: ((Int) -> Unit)? = null | |
149 | |
150 var interceptTouchEvent = true | |
151 | |
152 init { | |
153 thumbRadius = 13 | |
154 thumbColor = Color.WHITE | |
155 thumbStrokeColor = Color.DKGRAY | |
156 thumbColorCircleScale = 0.7f | |
157 } | |
158 | |
159 fun setRgb(r: Int, g: Int, b: Int) { | |
160 rgb = Color.rgb(r, g, b) | |
161 } | |
162 | |
163 override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) { | |
164 val minDimension = minOf( | |
165 MeasureSpec.getSize(widthMeasureSpec), | |
166 MeasureSpec.getSize(heightMeasureSpec) | |
167 ) | |
168 | |
169 setMeasuredDimension( | |
170 resolveSize(minDimension, widthMeasureSpec), | |
171 resolveSize(minDimension, heightMeasureSpec) | |
172 ) | |
173 } | |
174 | |
175 override fun onDraw(canvas: Canvas) { | |
176 drawColorWheel(canvas) | |
177 drawThumb(canvas) | |
178 } | |
179 | |
180 private fun drawColorWheel(canvas: Canvas) { | |
181 val hSpace = width - paddingLeft - paddingRight | |
182 val vSpace = height - paddingTop - paddingBottom | |
183 | |
184 wheelCenterX = paddingLeft + hSpace / 2 | |
185 wheelCenterY = paddingTop + vSpace / 2 | |
186 wheelRadius = maxOf(minOf(hSpace, vSpace) / 2, 0) | |
187 | |
188 val left = wheelCenterX - wheelRadius | |
189 val top = wheelCenterY - wheelRadius | |
190 val right = wheelCenterX + wheelRadius | |
191 val bottom = wheelCenterY + wheelRadius | |
192 | |
193 hueGradient.setBounds(left, top, right, bottom) | |
194 saturationGradient.setBounds(left, top, right, bottom) | |
195 saturationGradient.gradientRadius = wheelRadius.toFloat() | |
196 | |
197 hueGradient.draw(canvas) | |
198 saturationGradient.draw(canvas) | |
199 } | |
200 | |
201 private fun drawThumb(canvas: Canvas) { | |
202 val r = hsvColor.saturation * wheelRadius | |
203 val hueRadians = toRadians(hsvColor.hue) | |
204 val x = cos(hueRadians) * r + wheelCenterX | |
205 val y = sin(hueRadians) * r + wheelCenterY | |
206 | |
207 thumbDrawable.indicatorColor = hsvColor.rgb | |
208 thumbDrawable.setCoordinates(x, y) | |
209 thumbDrawable.draw(canvas) | |
210 } | |
211 | |
212 override fun onTouchEvent(event: MotionEvent): Boolean { | |
213 when (event.actionMasked) { | |
214 MotionEvent.ACTION_DOWN -> onActionDown(event) | |
215 MotionEvent.ACTION_MOVE -> updateColorOnMotionEvent(event) | |
216 MotionEvent.ACTION_UP -> { | |
217 updateColorOnMotionEvent(event) | |
218 if (isTap(event, downX, downY)) performClick() | |
219 } | |
220 } | |
221 | |
222 return true | |
223 } | |
224 | |
225 private fun onActionDown(event: MotionEvent) { | |
226 parent.requestDisallowInterceptTouchEvent(interceptTouchEvent) | |
227 updateColorOnMotionEvent(event) | |
228 downX = event.x | |
229 downY = event.y | |
230 } | |
231 | |
232 override fun performClick() = super.performClick() | |
233 | |
234 private fun updateColorOnMotionEvent(event: MotionEvent) { | |
235 calculateColor(event) | |
236 fireColorListener() | |
237 invalidate() | |
238 } | |
239 | |
240 private fun calculateColor(event: MotionEvent) { | |
241 val legX = event.x - wheelCenterX | |
242 val legY = event.y - wheelCenterY | |
243 val hypot = minOf(hypot(legX, legY), wheelRadius.toFloat()) | |
244 val hue = (toDegrees(atan2(legY, legX)) + 360) % 360 | |
245 val saturation = hypot / wheelRadius | |
246 hsvColor.set(hue, saturation, 1f) | |
247 } | |
248 | |
249 private fun fireColorListener() { | |
250 colorChangeListener?.invoke(hsvColor.rgb) | |
251 } | |
252 | |
253 override fun onSaveInstanceState(): Parcelable { | |
254 val superState = super.onSaveInstanceState() | |
255 val thumbState = thumbDrawable.saveState() | |
256 return ColorWheelState(superState, this, thumbState) | |
257 } | |
258 | |
259 override fun onRestoreInstanceState(state: Parcelable) { | |
260 if (state is ColorWheelState) { | |
261 super.onRestoreInstanceState(state.superState) | |
262 readColorWheelState(state) | |
263 } else { | |
264 super.onRestoreInstanceState(state) | |
265 } | |
266 } | |
267 | |
268 private fun readColorWheelState(state: ColorWheelState) { | |
269 thumbDrawable.restoreState(state.thumbState) | |
270 interceptTouchEvent = state.interceptTouchEvent | |
271 rgb = state.rgb | |
272 } | |
273 } | |
274 | |
275 internal class ColorWheelState : View.BaseSavedState { | |
276 | |
277 val thumbState: ThumbDrawableState | |
278 val interceptTouchEvent: Boolean | |
279 val rgb: Int | |
280 | |
281 constructor( | |
282 superState: Parcelable?, | |
283 view: ColorWheel, | |
284 thumbState: ThumbDrawableState | |
285 ) : super(superState) { | |
286 this.thumbState = thumbState | |
287 interceptTouchEvent = view.interceptTouchEvent | |
288 rgb = view.rgb | |
289 } | |
290 | |
291 constructor(source: Parcel) : super(source) { | |
292 thumbState = source.readThumbState() | |
293 interceptTouchEvent = source.readBooleanCompat() | |
294 rgb = source.readInt() | |
295 } | |
296 | |
297 override fun writeToParcel(out: Parcel, flags: Int) { | |
298 super.writeToParcel(out, flags) | |
299 out.writeThumbState(thumbState, flags) | |
300 out.writeBooleanCompat(interceptTouchEvent) | |
301 out.writeInt(rgb) | |
302 } | |
303 | |
304 companion object CREATOR : Parcelable.Creator<ColorWheelState> { | |
305 | |
306 override fun createFromParcel(source: Parcel) = ColorWheelState(source) | |
307 | |
308 override fun newArray(size: Int) = arrayOfNulls<ColorWheelState>(size) | |
309 } | |
310 } | |
311 internal fun Parcel.writeBooleanCompat(value: Boolean) { | |
312 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) { | |
313 this.writeBoolean(value) | |
314 } else { | |
315 this.writeInt(if (value) 1 else 0) | |
316 } | |
317 } | |
318 | |
319 internal fun Parcel.readBooleanCompat(): Boolean { | |
320 return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) { | |
321 this.readBoolean() | |
322 } else { | |
323 this.readInt() == 1 | |
324 } | |
325 } | |
326 private const val MAX_ALPHA = 255 | |
327 | |
328 open class GradientSeekBar @JvmOverloads constructor( | |
329 context: Context, | |
330 attrs: AttributeSet? = null, | |
331 defStyleAttr: Int = 0 | |
332 ) : View(context, attrs, defStyleAttr) { | |
333 | |
334 private val gradientColors = IntArray(2) | |
335 private val thumbDrawable = ThumbDrawable() | |
336 private val gradientDrawable = GradientDrawable() | |
337 private val argbEvaluator = android.animation.ArgbEvaluator() | |
338 | |
339 private lateinit var orientationStrategy: OrientationStrategy | |
340 private var downX = 0f | |
341 private var downY = 0f | |
342 | |
343 var startColor | |
344 get() = gradientColors[0] | |
345 set(color) { setColors(start = color) } | |
346 | |
347 var endColor | |
348 get() = gradientColors[1] | |
349 set(color) { setColors(end = color) } | |
350 | |
351 var offset = 0f | |
352 set(offset) { | |
353 field = ensureOffsetWithinRange(offset) | |
354 calculateArgb() | |
355 } | |
356 | |
357 var barSize = 0 | |
358 set(width) { | |
359 field = width | |
360 requestLayout() | |
361 } | |
362 | |
363 var cornersRadius = 0f | |
364 set(radius) { | |
365 field = radius | |
366 invalidate() | |
367 } | |
368 | |
369 var orientation = Orientation.VERTICAL | |
370 set(orientation) { | |
371 field = orientation | |
372 orientationStrategy = createOrientationStrategy() | |
373 requestLayout() | |
374 } | |
375 | |
376 var thumbColor | |
377 get() = thumbDrawable.thumbColor | |
378 set(value) { | |
379 thumbDrawable.thumbColor = value | |
380 invalidate() | |
381 } | |
382 | |
383 var thumbStrokeColor | |
384 get() = thumbDrawable.strokeColor | |
385 set(value) { | |
386 thumbDrawable.strokeColor = value | |
387 invalidate() | |
388 } | |
389 | |
390 var thumbColorCircleScale | |
391 get() = thumbDrawable.colorCircleScale | |
392 set(value) { | |
393 thumbDrawable.colorCircleScale = value | |
394 invalidate() | |
395 } | |
396 | |
397 var thumbRadius | |
398 get() = thumbDrawable.radius | |
399 set(radius) { | |
400 thumbDrawable.radius = radius | |
401 requestLayout() | |
402 } | |
403 | |
404 var argb = 0 | |
405 private set | |
406 | |
407 var colorChangeListener: ((Float, Int) -> Unit)? = null | |
408 | |
409 var interceptTouchEvent = true | |
410 | |
411 init { | |
412 thumbColor = Color.WHITE | |
413 thumbStrokeColor = Color.DKGRAY | |
414 thumbColorCircleScale = 0.7f | |
415 thumbRadius = 13 | |
416 barSize = 10 | |
417 cornersRadius = 5.0f | |
418 offset = 0f | |
419 orientation = Orientation.VERTICAL | |
420 setColors(Color.TRANSPARENT, Color.BLACK) | |
421 } | |
422 | |
423 private fun createOrientationStrategy(): OrientationStrategy { | |
424 return when (orientation) { | |
425 Orientation.VERTICAL -> VerticalStrategy() | |
426 Orientation.HORIZONTAL -> HorizontalStrategy() | |
427 } | |
428 } | |
429 | |
430 fun setColors(start: Int = startColor, end: Int = endColor) { | |
431 updateGradientColors(start, end) | |
432 calculateArgb() | |
433 } | |
434 | |
435 private fun updateGradientColors(start: Int, end: Int) { | |
436 gradientColors[0] = start | |
437 gradientColors[1] = end | |
438 gradientDrawable.colors = gradientColors | |
439 } | |
440 | |
441 override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) { | |
442 val dimens = orientationStrategy.measure(this, widthMeasureSpec, heightMeasureSpec) | |
443 setMeasuredDimension(dimens.width(), dimens.height()) | |
444 } | |
445 | |
446 override fun onDraw(canvas: Canvas) { | |
447 drawGradientRect(canvas) | |
448 drawThumb(canvas) | |
449 } | |
450 | |
451 private fun drawGradientRect(canvas: Canvas) { | |
452 gradientDrawable.orientation = orientationStrategy.gradientOrientation | |
453 gradientDrawable.bounds = orientationStrategy.getGradientBounds(this) | |
454 gradientDrawable.cornerRadius = cornersRadius | |
455 gradientDrawable.draw(canvas) | |
456 } | |
457 | |
458 private fun drawThumb(canvas: Canvas) { | |
459 val coordinates = orientationStrategy.getThumbPosition(this, gradientDrawable.bounds) | |
460 thumbDrawable.indicatorColor = argb | |
461 thumbDrawable.setCoordinates(coordinates.x, coordinates.y) | |
462 thumbDrawable.draw(canvas) | |
463 } | |
464 | |
465 override fun onTouchEvent(event: MotionEvent): Boolean { | |
466 when (event.actionMasked) { | |
467 MotionEvent.ACTION_DOWN -> onActionDown(event) | |
468 MotionEvent.ACTION_MOVE -> calculateOffsetOnMotionEvent(event) | |
469 MotionEvent.ACTION_UP -> { | |
470 calculateOffsetOnMotionEvent(event) | |
471 if (isTap(event, downX, downY)) performClick() | |
472 } | |
473 } | |
474 | |
475 return true | |
476 } | |
477 | |
478 private fun onActionDown(event: MotionEvent) { | |
479 parent.requestDisallowInterceptTouchEvent(interceptTouchEvent) | |
480 calculateOffsetOnMotionEvent(event) | |
481 downX = event.x | |
482 downY = event.y | |
483 } | |
484 | |
485 override fun performClick() = super.performClick() | |
486 | |
487 private fun calculateOffsetOnMotionEvent(event: MotionEvent) { | |
488 offset = orientationStrategy.getOffset(this, event, gradientDrawable.bounds) | |
489 } | |
490 | |
491 private fun calculateArgb() { | |
492 argb = argbEvaluator.evaluate(offset, startColor, endColor) as Int | |
493 fireListener() | |
494 invalidate() | |
495 } | |
496 | |
497 private fun fireListener() { | |
498 colorChangeListener?.invoke(offset, argb) | |
499 } | |
500 | |
501 override fun onSaveInstanceState(): Parcelable { | |
502 val superState = super.onSaveInstanceState() | |
503 val thumbState = thumbDrawable.saveState() | |
504 return GradientSeekBarState(superState, this, thumbState) | |
505 } | |
506 | |
507 override fun onRestoreInstanceState(state: Parcelable) { | |
508 if (state is GradientSeekBarState) { | |
509 super.onRestoreInstanceState(state.superState) | |
510 readGradientSeekBarState(state) | |
511 } else { | |
512 super.onRestoreInstanceState(state) | |
513 } | |
514 } | |
515 | |
516 private fun readGradientSeekBarState(state: GradientSeekBarState) { | |
517 updateGradientColors(state.startColor, state.endColor) | |
518 offset = state.offset | |
519 barSize = state.barSize | |
520 cornersRadius = state.cornerRadius | |
521 orientation = Orientation.values()[state.orientation] | |
522 interceptTouchEvent = state.interceptTouchEvent | |
523 thumbDrawable.restoreState(state.thumbState) | |
524 } | |
525 | |
526 private fun ensureOffsetWithinRange(offset: Float) = ensureWithinRange(offset, 0f, 1f) | |
527 | |
528 enum class Orientation { VERTICAL, HORIZONTAL } | |
529 } | |
530 | |
531 val GradientSeekBar.currentColorAlpha get() = Color.alpha(argb) | |
532 | |
533 fun GradientSeekBar.setTransparentToColor(color: Int, respectAlpha: Boolean = true) { | |
534 if (respectAlpha) { | |
535 this.offset = Color.alpha(color) / MAX_ALPHA.toFloat() | |
536 } | |
537 this.setColors( | |
538 setAlpha(color, 0), | |
539 setAlpha(color, MAX_ALPHA) | |
540 ) | |
541 } | |
542 | |
543 inline fun GradientSeekBar.setAlphaChangeListener( | |
544 crossinline listener: (Float, Int, Int) -> Unit | |
545 ) { | |
546 this.colorChangeListener = { offset, color -> | |
547 listener(offset, color, this.currentColorAlpha) | |
548 } | |
549 } | |
550 | |
551 fun GradientSeekBar.setBlackToColor(color: Int) { | |
552 this.setColors(Color.BLACK, color) | |
553 } | |
554 | |
555 internal class GradientSeekBarState : View.BaseSavedState { | |
556 | |
557 val startColor: Int | |
558 val endColor: Int | |
559 val offset: Float | |
560 val barSize: Int | |
561 val cornerRadius: Float | |
562 val orientation: Int | |
563 val interceptTouchEvent: Boolean | |
564 val thumbState: ThumbDrawableState | |
565 | |
566 constructor( | |
567 superState: Parcelable?, | |
568 view: GradientSeekBar, | |
569 thumbState: ThumbDrawableState | |
570 ) : super(superState) { | |
571 startColor = view.startColor | |
572 endColor = view.endColor | |
573 offset = view.offset | |
574 barSize = view.barSize | |
575 cornerRadius = view.cornersRadius | |
576 orientation = view.orientation.ordinal | |
577 interceptTouchEvent = view.interceptTouchEvent | |
578 this.thumbState = thumbState | |
579 } | |
580 | |
581 constructor(source: Parcel) : super(source) { | |
582 startColor = source.readInt() | |
583 endColor = source.readInt() | |
584 offset = source.readFloat() | |
585 barSize = source.readInt() | |
586 cornerRadius = source.readFloat() | |
587 orientation = source.readInt() | |
588 interceptTouchEvent = source.readBooleanCompat() | |
589 thumbState = source.readThumbState() | |
590 } | |
591 | |
592 override fun writeToParcel(out: Parcel, flags: Int) { | |
593 super.writeToParcel(out, flags) | |
594 out.writeInt(startColor) | |
595 out.writeInt(endColor) | |
596 out.writeFloat(offset) | |
597 out.writeInt(barSize) | |
598 out.writeFloat(cornerRadius) | |
599 out.writeInt(orientation) | |
600 out.writeBooleanCompat(interceptTouchEvent) | |
601 out.writeThumbState(thumbState, flags) | |
602 } | |
603 | |
604 companion object CREATOR : Parcelable.Creator<GradientSeekBarState> { | |
605 | |
606 override fun createFromParcel(source: Parcel) = GradientSeekBarState(source) | |
607 | |
608 override fun newArray(size: Int) = arrayOfNulls<GradientSeekBarState>(size) | |
609 } | |
610 } | |
611 | |
612 internal class HorizontalStrategy : OrientationStrategy { | |
613 | |
614 private val rect = Rect() | |
615 private val point = PointF() | |
616 | |
617 override val gradientOrientation = GradientDrawable.Orientation.LEFT_RIGHT | |
618 | |
619 override fun measure(view: GradientSeekBar, widthSpec: Int, heightSpec: Int): Rect { | |
620 val widthSize = View.MeasureSpec.getSize(widthSpec) | |
621 val maxHeight = maxOf(view.barSize, view.thumbRadius * 2) | |
622 val preferredWidth = widthSize + view.paddingLeft + view.paddingRight | |
623 val preferredHeight = maxHeight + view.paddingTop + view.paddingBottom | |
624 val finalWidth = View.resolveSize(preferredWidth, widthSpec) | |
625 val finalHeight = View.resolveSize(preferredHeight, heightSpec) | |
626 return rect.apply { set(0, 0, finalWidth, finalHeight) } | |
627 } | |
628 | |
629 override fun getGradientBounds(view: GradientSeekBar): Rect { | |
630 val availableHeight = view.height - view.paddingTop - view.paddingRight | |
631 val left = view.paddingLeft + view.thumbRadius | |
632 val right = view.width - view.paddingRight - view.thumbRadius | |
633 val top = view.paddingTop + (availableHeight - view.barSize) / 2 | |
634 val bottom = top + view.barSize | |
635 return rect.apply { set(left, top, right, bottom) } | |
636 } | |
637 | |
638 override fun getThumbPosition(view: GradientSeekBar, gradient: Rect): PointF { | |
639 val x = (gradient.left + view.offset * gradient.width()) | |
640 val y = view.height / 2f | |
641 return point.apply { set(x, y) } | |
642 } | |
643 | |
644 override fun getOffset(view: GradientSeekBar, event: MotionEvent, gradient: Rect): Float { | |
645 val checkedX = ensureWithinRange(event.x.roundToInt(), gradient.left, gradient.right) | |
646 val relativeX = (checkedX - gradient.left).toFloat() | |
647 return relativeX / gradient.width() | |
648 } | |
649 } | |
650 | |
651 internal fun View.isTap(lastEvent: MotionEvent, initialX: Float, initialY: Float): Boolean { | |
652 val config = ViewConfiguration.get(context) | |
653 val duration = lastEvent.eventTime - lastEvent.downTime | |
654 val distance = hypot(lastEvent.x - initialX, lastEvent.y - initialY) | |
655 return duration < ViewConfiguration.getTapTimeout() && distance < config.scaledTouchSlop | |
656 } | |
657 | |
658 internal const val PI = Math.PI.toFloat() | |
659 | |
660 internal fun toRadians(degrees: Float) = degrees / 180f * PI | |
661 | |
662 internal fun toDegrees(radians: Float) = radians * 180f / PI | |
663 | |
664 internal fun <T> ensureWithinRange( | |
665 value: T, | |
666 start: T, | |
667 end: T | |
668 ): T where T : Number, T : Comparable<T> = minOf(maxOf(value, start), end) | |
669 | |
670 internal fun setAlpha(argb: Int, alpha: Int) = | |
671 Color.argb(alpha, Color.red(argb), Color.green(argb), Color.blue(argb)) | |
672 | |
673 class HsvColor(hue: Float = 0f, saturation: Float = 0f, value: Float = 0f) { | |
674 | |
675 private val hsv = floatArrayOf( | |
676 ensureHue(hue), | |
677 ensureSaturation(saturation), | |
678 ensureValue(value) | |
679 ) | |
680 | |
681 var hue | |
682 get() = hsv[0] | |
683 set(hue) { hsv[0] = ensureHue(hue) } | |
684 | |
685 var saturation | |
686 get() = hsv[1] | |
687 set(saturation) { hsv[1] = ensureSaturation(saturation) } | |
688 | |
689 var value | |
690 get() = hsv[2] | |
691 set(value) { hsv[2] = ensureValue(value) } | |
692 | |
693 var rgb | |
694 get() = Color.HSVToColor(hsv) | |
695 set(rgb) { Color.colorToHSV(rgb, hsv) } | |
696 | |
697 fun set(hue: Float = hsv[0], saturation: Float = hsv[1], value: Float = hsv[2]) { | |
698 hsv[0] = ensureHue(hue) | |
699 hsv[1] = ensureSaturation(saturation) | |
700 hsv[2] = ensureValue(value) | |
701 } | |
702 | |
703 private fun ensureHue(hue: Float) = ensureWithinRange(hue, 0f, 360f) | |
704 | |
705 private fun ensureValue(value: Float) = ensureWithinRange(value, 0f, 1f) | |
706 | |
707 private fun ensureSaturation(saturation: Float) = ensureValue(saturation) | |
708 } | |
709 | |
710 internal interface OrientationStrategy { | |
711 | |
712 val gradientOrientation: GradientDrawable.Orientation | |
713 | |
714 fun measure(view: GradientSeekBar, widthSpec: Int, heightSpec: Int): Rect | |
715 | |
716 fun getGradientBounds(view: GradientSeekBar): Rect | |
717 | |
718 fun getThumbPosition(view: GradientSeekBar, gradient: Rect): PointF | |
719 | |
720 fun getOffset(view: GradientSeekBar, event: MotionEvent, gradient: Rect): Float | |
721 } | |
722 | |
723 internal class ThumbDrawableState private constructor( | |
724 val radius: Int, | |
725 val thumbColor: Int, | |
726 val strokeColor: Int, | |
727 val colorCircleScale: Float | |
728 ) : Parcelable { | |
729 | |
730 constructor(thumbDrawable: ThumbDrawable) : this( | |
731 thumbDrawable.radius, | |
732 thumbDrawable.thumbColor, | |
733 thumbDrawable.strokeColor, | |
734 thumbDrawable.colorCircleScale | |
735 ) | |
736 | |
737 constructor(parcel: Parcel) : this( | |
738 parcel.readInt(), | |
739 parcel.readInt(), | |
740 parcel.readInt(), | |
741 parcel.readFloat() | |
742 ) | |
743 | |
744 override fun writeToParcel(parcel: Parcel, flags: Int) { | |
745 parcel.writeInt(radius) | |
746 parcel.writeInt(thumbColor) | |
747 parcel.writeInt(strokeColor) | |
748 parcel.writeFloat(colorCircleScale) | |
749 } | |
750 | |
751 override fun describeContents() = 0 | |
752 | |
753 companion object { | |
754 | |
755 val EMPTY_STATE = ThumbDrawableState(0, 0, 0, 0f) | |
756 | |
757 @JvmField | |
758 val CREATOR = object : Parcelable.Creator<ThumbDrawableState> { | |
759 | |
760 override fun createFromParcel(parcel: Parcel) = ThumbDrawableState(parcel) | |
761 | |
762 override fun newArray(size: Int) = arrayOfNulls<ThumbDrawableState>(size) | |
763 } | |
764 } | |
765 } | |
766 | |
767 internal fun Parcel.writeThumbState(state: ThumbDrawableState, flags: Int) { | |
768 this.writeParcelable(state, flags) | |
769 } | |
770 | |
771 internal fun Parcel.readThumbState(): ThumbDrawableState { | |
772 return this.readParcelable(ThumbDrawableState::class.java.classLoader) | |
773 ?: ThumbDrawableState.EMPTY_STATE | |
774 } | |
775 | |
776 internal class ThumbDrawable { | |
777 | |
778 private val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply { strokeWidth = 1f } | |
779 private var x = 0f | |
780 private var y = 0f | |
781 | |
782 var indicatorColor = 0 | |
783 var strokeColor = 0 | |
784 var thumbColor = 0 | |
785 var radius = 0 | |
786 | |
787 var colorCircleScale = 0f | |
788 set(value) { field = ensureWithinRange(value, 0f, 1f) } | |
789 | |
790 fun setCoordinates(x: Float, y: Float) { | |
791 this.x = x | |
792 this.y = y | |
793 } | |
794 | |
795 fun draw(canvas: Canvas) { | |
796 drawThumb(canvas) | |
797 drawStroke(canvas) | |
798 drawColorIndicator(canvas) | |
799 } | |
800 | |
801 private fun drawThumb(canvas: Canvas) { | |
802 paint.color = thumbColor | |
803 paint.style = Paint.Style.FILL | |
804 canvas.drawCircle(x, y, radius.toFloat(), paint) | |
805 } | |
806 | |
807 private fun drawStroke(canvas: Canvas) { | |
808 val strokeCircleRadius = radius - paint.strokeWidth / 2f | |
809 | |
810 paint.color = strokeColor | |
811 paint.style = Paint.Style.STROKE | |
812 canvas.drawCircle(x, y, strokeCircleRadius, paint) | |
813 } | |
814 | |
815 private fun drawColorIndicator(canvas: Canvas) { | |
816 val colorIndicatorCircleRadius = radius * colorCircleScale | |
817 | |
818 paint.color = indicatorColor | |
819 paint.style = Paint.Style.FILL | |
820 canvas.drawCircle(x, y, colorIndicatorCircleRadius, paint) | |
821 } | |
822 | |
823 fun restoreState(state: ThumbDrawableState) { | |
824 radius = state.radius | |
825 thumbColor = state.thumbColor | |
826 strokeColor = state.strokeColor | |
827 colorCircleScale = state.colorCircleScale | |
828 } | |
829 | |
830 fun saveState() = ThumbDrawableState(this) | |
831 } | |
832 | |
833 internal class VerticalStrategy : OrientationStrategy { | |
834 | |
835 private val rect = Rect() | |
836 private val point = PointF() | |
837 | |
838 override val gradientOrientation = GradientDrawable.Orientation.BOTTOM_TOP | |
839 | |
840 override fun measure(view: GradientSeekBar, widthSpec: Int, heightSpec: Int): Rect { | |
841 val heightSize = View.MeasureSpec.getSize(heightSpec) | |
842 val maxWidth = maxOf(view.barSize, view.thumbRadius * 2) | |
843 val preferredWidth = maxWidth + view.paddingLeft + view.paddingRight | |
844 val preferredHeight = heightSize + view.paddingTop + view.paddingBottom | |
845 val finalWidth = View.resolveSize(preferredWidth, widthSpec) | |
846 val finalHeight = View.resolveSize(preferredHeight, heightSpec) | |
847 return rect.apply { set(0, 0, finalWidth, finalHeight) } | |
848 } | |
849 | |
850 override fun getGradientBounds(view: GradientSeekBar): Rect { | |
851 val availableWidth = view.width - view.paddingLeft - view.paddingRight | |
852 val left = view.paddingLeft + (availableWidth - view.barSize) / 2 | |
853 val right = left + view.barSize | |
854 val top = view.paddingTop + view.thumbRadius | |
855 val bottom = view.height - view.paddingBottom - view.thumbRadius | |
856 return rect.apply { set(left, top, right, bottom) } | |
857 } | |
858 | |
859 override fun getThumbPosition(view: GradientSeekBar, gradient: Rect): PointF { | |
860 val y = (gradient.top + (1f - view.offset) * gradient.height()) | |
861 val x = view.width / 2f | |
862 return point.apply { set(x, y) } | |
863 } | |
864 | |
865 override fun getOffset(view: GradientSeekBar, event: MotionEvent, gradient: Rect): Float { | |
866 val checkedY = ensureWithinRange(event.y.roundToInt(), gradient.top, gradient.bottom) | |
867 val relativeY = (checkedY - gradient.top).toFloat() | |
868 return 1f - relativeY / gradient.height() | |
869 } | |
870 } | |
871 | |
872 // Main Dynamic Windows section | |
67 object DWEvent { | 873 object DWEvent { |
68 const val TIMER = 0 | 874 const val TIMER = 0 |
69 const val CONFIGURE = 1 | 875 const val CONFIGURE = 1 |
70 const val KEY_PRESS = 2 | 876 const val KEY_PRESS = 2 |
71 const val BUTTON_PRESS = 3 | 877 const val BUTTON_PRESS = 3 |