X-Git-Url: https://git.ktnx.net/?a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fnet%2Fktnx%2Fmobileledger%2Fui%2FHueRing.java;h=71df5bb98f75a98012761b74f8ceed13dea237d9;hb=HEAD;hp=0a759a0a6739c0c459e8564a4c2f1905f88e04c9;hpb=899d71e1f4cff043592de4283813b96be8f397a5;p=mobile-ledger.git diff --git a/app/src/main/java/net/ktnx/mobileledger/ui/HueRing.java b/app/src/main/java/net/ktnx/mobileledger/ui/HueRing.java index 0a759a0a..71df5bb9 100644 --- a/app/src/main/java/net/ktnx/mobileledger/ui/HueRing.java +++ b/app/src/main/java/net/ktnx/mobileledger/ui/HueRing.java @@ -1,5 +1,5 @@ /* - * Copyright © 2019 Damyan Ivanov. + * Copyright © 2020 Damyan Ivanov. * This file is part of MoLe. * MoLe is free software: you can distribute it and/or modify it * under the term of the GNU General Public License as published by @@ -20,35 +20,38 @@ package net.ktnx.mobileledger.ui; import android.content.Context; import android.graphics.Canvas; import android.graphics.Paint; +import android.graphics.Path; import android.graphics.RectF; import android.graphics.Shader; import android.graphics.SweepGradient; import android.util.AttributeSet; -import android.util.Log; import android.view.MotionEvent; import android.view.View; +import androidx.annotation.Nullable; + import net.ktnx.mobileledger.utils.Colors; import net.ktnx.mobileledger.utils.DimensionUtils; -import androidx.annotation.Nullable; +import java.util.Locale; + +import static net.ktnx.mobileledger.utils.Logger.debug; public class HueRing extends View { - private final int markerWidthDegrees = 10; - private Paint ringPaint, initialPaint, currentPaint; - private int centerX, centerY; - private int diameter; + public static final int hueStepDegrees = 5; + private Paint ringPaint, initialPaint, currentPaint, markerPaint; + private int center; private int padding; private int initialHueDegrees; private int color, hueDegrees; - private float radius; + private float outerR; + private float innerR; private float bandWidth; - private float ringR; - private float innerDiameter; private float centerR; - private RectF centerRect; - private RectF ringRect; + private final RectF centerRect = new RectF(); + private final RectF ringRect = new RectF(); private int markerOverflow; + private int markerStrokeWidth; public HueRing(Context context, @Nullable AttributeSet attrs) { super(context, attrs); init(Colors.DEFAULT_HUE_DEG); @@ -71,13 +74,13 @@ public class HueRing extends View { init(initialHueDegrees); } private void init(int initialHueDegrees) { - final int[] steps = {0xFF000000 | Colors.getPrimaryColorForHue(0), // red - 0xFF000000 | Colors.getPrimaryColorForHue(60), // yellow - 0xFF000000 | Colors.getPrimaryColorForHue(120), // green - 0xFF000000 | Colors.getPrimaryColorForHue(180), // cyan - 0xFF000000 | Colors.getPrimaryColorForHue(240), // blue - 0xFF000000 | Colors.getPrimaryColorForHue(300), // magenta - 0xFF000000 | Colors.getPrimaryColorForHue(360), // red, again + final int[] steps = {Colors.getPrimaryColorForHue(0), // red + Colors.getPrimaryColorForHue(60), // yellow + Colors.getPrimaryColorForHue(120), // green + Colors.getPrimaryColorForHue(180), // cyan + Colors.getPrimaryColorForHue(240), // blue + Colors.getPrimaryColorForHue(300), // magenta + Colors.getPrimaryColorForHue(360), // red, again }; Shader rainbow = new SweepGradient(0, 0, steps, null); @@ -94,7 +97,14 @@ public class HueRing extends View { setInitialHue(initialHueDegrees); setHue(initialHueDegrees); - padding = DimensionUtils.dp2px(getContext(), 4); + markerStrokeWidth = DimensionUtils.dp2px(getContext(), 4); + + padding = markerStrokeWidth * 2 + 2; + + markerPaint = new Paint(Paint.ANTI_ALIAS_FLAG); + markerPaint.setStyle(Paint.Style.STROKE); + markerPaint.setColor(0xa0000000); + markerPaint.setStrokeWidth(markerStrokeWidth); } public int getColor() { return color; @@ -103,13 +113,16 @@ public class HueRing extends View { return hueDegrees; } public void setHue(int hueDegrees) { - if (hueDegrees == -1) hueDegrees = Colors.DEFAULT_HUE_DEG; + if (hueDegrees == -1) + hueDegrees = Colors.DEFAULT_HUE_DEG; if (hueDegrees != Colors.DEFAULT_HUE_DEG) { // round to 15 degrees - int rem = hueDegrees % 15; - if (rem < 8) hueDegrees -= rem; - else hueDegrees += 15 - rem; + int rem = hueDegrees % hueStepDegrees; + if (rem < (hueStepDegrees / 2)) + hueDegrees -= rem; + else + hueDegrees += hueStepDegrees - rem; } this.hueDegrees = hueDegrees; @@ -127,16 +140,37 @@ public class HueRing extends View { float center = getWidth() / 2f; ringPaint.setStrokeWidth((int) bandWidth); + canvas.save(); canvas.translate(center, center); canvas.drawOval(ringRect, ringPaint); canvas.drawArc(centerRect, 180, 180, true, initialPaint); canvas.drawArc(centerRect, 0, 180, true, currentPaint); - drawMarker(canvas); + canvas.restore(); + drawMarker(canvas, center); } - private void drawMarker(Canvas canvas) { - // TODO + private void drawMarker(Canvas canvas, float center) { + float leftRadians = (float) Math.toRadians(-hueStepDegrees / 2f); + float rightRadians = (float) Math.toRadians(hueStepDegrees / 2f); + float sl = (float) Math.sin(leftRadians); + float sr = (float) Math.sin(rightRadians); + float cl = (float) Math.cos(leftRadians); + float cr = (float) Math.cos(rightRadians); + float innerEdge = innerR - 1.5f * markerStrokeWidth; + float outerEdge = outerR + 1.5f + markerStrokeWidth; + Path p = new Path(); +// p.arcTo(-innerEdge, -innerEdge, innerEdge, innerEdge, -hueStepDegrees / 2f, +// hueStepDegrees, true); +// p.lineTo(outerEdge * cr, outerEdge * sr); + p.arcTo(-outerEdge, -outerEdge, outerEdge, outerEdge, hueStepDegrees / 2f, -hueStepDegrees, + false); +// p.close(); + canvas.save(); + canvas.translate(center, center); + canvas.rotate(hueDegrees, 0, 0); + canvas.drawPath(p, markerPaint); + canvas.restore(); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { @@ -145,6 +179,7 @@ public class HueRing extends View { int heightMode = View.MeasureSpec.getMode(heightMeasureSpec); int heightSize = View.MeasureSpec.getSize(heightMeasureSpec); + int diameter; if ((widthMode == MeasureSpec.AT_MOST) && (heightMode == MeasureSpec.AT_MOST)) { diameter = Math.min(widthSize, heightSize); } @@ -158,26 +193,30 @@ public class HueRing extends View { // padding = DimensionUtils.dp2px(getContext(), // getContext().getResources().getDimension(R.dimen.activity_horizontal_margin)) / 2; diameter -= 2 * padding; - radius = diameter / 2f; - centerX = padding + (int) radius; - centerY = centerX; + outerR = diameter / 2f; + center = padding + (int) outerR; bandWidth = diameter / 3.5f; - ringR = radius - bandWidth / 2f; + float ringR = outerR - bandWidth / 2f; + innerR = outerR - bandWidth; - ringRect = new RectF(-ringR, -ringR, ringR, ringR); + ringRect.set(-ringR, -ringR, ringR, ringR); - innerDiameter = diameter - 2 * bandWidth; + float innerDiameter = diameter - 2 * bandWidth; centerR = innerDiameter * 0.5f; - centerRect = new RectF(-centerR, -centerR, centerR, centerR); + centerRect.set(-centerR, -centerR, centerR, centerR); + } + @Override + public boolean performClick() { + return super.performClick(); } @Override public boolean onTouchEvent(MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: case MotionEvent.ACTION_MOVE: - float x = event.getX() - centerX; - float y = event.getY() - centerY; + float x = event.getX() - center; + float y = event.getY() - center; float dist = (float) Math.hypot(x, y); @@ -191,18 +230,22 @@ public class HueRing extends View { float angleRad = (float) Math.atan2(y, x); // angleRad is [-𝜋; +𝜋] float hue = (float) (angleRad / (2 * Math.PI)); - if (hue < 0) hue += 1; - Log.d("TMP", - String.format("x=%1.3f, y=%1.3f, angle=%1.3frad, hueDegrees=%1.3f", x, y, - angleRad, hue)); + if (hue < 0) + hue += 1; + debug("TMP", String.format(Locale.US, + "x=%1.3f, y=%1.3f, angle=%1.3f rad, hueDegrees=%1.3f", x, y, angleRad, + hue)); setHue(hue); break; + case MotionEvent.ACTION_UP: + performClick(); + break; } - return true; } public void setInitialHue(int initialHue) { - if (initialHue == -1) initialHue = Colors.DEFAULT_HUE_DEG; + if (initialHue == -1) + initialHue = Colors.DEFAULT_HUE_DEG; this.initialHueDegrees = initialHue; this.initialPaint.setColor(Colors.getPrimaryColorForHue(initialHue)); invalidate();