X-Git-Url: https://git.ktnx.net/?p=mobile-ledger.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fnet%2Fktnx%2Fmobileledger%2Fui%2FHueRing.java;h=ac3ef612e315bb611eefd0951b10b49928f3e222;hp=e6b4b58b581d262617530275dcbb98e628e5d521;hb=bd5da50ef980c0c9657ec1e9c3e681ab5092f438;hpb=efa1f56494e485c7f8d4f97cd64df4b01f7b5e07 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 e6b4b58b..ac3ef612 100644 --- a/app/src/main/java/net/ktnx/mobileledger/ui/HueRing.java +++ b/app/src/main/java/net/ktnx/mobileledger/ui/HueRing.java @@ -20,27 +20,31 @@ 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 net.ktnx.mobileledger.utils.Colors; +import net.ktnx.mobileledger.utils.DimensionUtils; import androidx.annotation.Nullable; +import static net.ktnx.mobileledger.utils.Logger.debug; + public class HueRing extends View { - private final int markerWidthDegrees = 10; - private Paint ringPaint, initialPaint, currentPaint; + private static final int hueStepDegrees = 15; + private Paint ringPaint, initialPaint, currentPaint, markerPaint; private int centerX, centerY; private int diameter; 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; @@ -48,6 +52,7 @@ public class HueRing extends View { private RectF centerRect; private RectF ringRect; private int markerOverflow; + private int markerStrokeWidth; public HueRing(Context context, @Nullable AttributeSet attrs) { super(context, attrs); init(Colors.DEFAULT_HUE_DEG); @@ -70,13 +75,13 @@ 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); @@ -92,6 +97,15 @@ public class HueRing extends View { setInitialHue(initialHueDegrees); setHue(initialHueDegrees); + + 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; @@ -100,11 +114,13 @@ public class HueRing extends View { return hueDegrees; } public void setHue(int hueDegrees) { + 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; @@ -119,18 +135,40 @@ public class HueRing extends View { protected void onDraw(Canvas canvas) { super.onDraw(canvas); + float center = getWidth() / 2f; ringPaint.setStrokeWidth((int) bandWidth); - canvas.translate(centerX, centerY); + 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) { @@ -139,24 +177,26 @@ public class HueRing extends View { int heightMode = View.MeasureSpec.getMode(heightMeasureSpec); int heightSize = View.MeasureSpec.getSize(heightMeasureSpec); - if (((widthMode == MeasureSpec.AT_MOST) && (heightMode == MeasureSpec.AT_MOST)) || - ((widthMode == MeasureSpec.EXACTLY) && (heightMode == MeasureSpec.EXACTLY))) - { + if ((widthMode == MeasureSpec.AT_MOST) && (heightMode == MeasureSpec.AT_MOST)) { diameter = Math.min(widthSize, heightSize); } + else { + setMeasuredDimension(MEASURED_STATE_TOO_SMALL, MEASURED_STATE_TOO_SMALL); + return; + } setMeasuredDimension(diameter, diameter); // padding = DimensionUtils.dp2px(getContext(), // getContext().getResources().getDimension(R.dimen.activity_horizontal_margin)) / 2; - padding = 0; diameter -= 2 * padding; - radius = diameter / 2f; - centerX = padding + (int) radius; + outerR = diameter / 2f; + centerX = padding + (int) outerR; centerY = centerX; bandWidth = diameter / 3.5f; - ringR = radius - bandWidth / 2f; + ringR = outerR - bandWidth / 2f; + innerR = outerR - bandWidth; ringRect = new RectF(-ringR, -ringR, ringR, ringR); @@ -185,7 +225,7 @@ public class HueRing extends View { // angleRad is [-𝜋; +𝜋] float hue = (float) (angleRad / (2 * Math.PI)); if (hue < 0) hue += 1; - Log.d("TMP", + debug("TMP", String.format("x=%1.3f, y=%1.3f, angle=%1.3frad, hueDegrees=%1.3f", x, y, angleRad, hue)); setHue(hue);