/*
- * Copyright © 2019 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
- * the Free Software Foundation, either version 3 of the License, or
- * (at your opinion), any later version.
+ * 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
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your opinion), any later version.
*
- * MoLe is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License terms for details.
+ * MoLe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License terms for details.
*
- * You should have received a copy of the GNU General Public License
- * along with Mobile-Ledger. If not, see <https://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU General Public License
+ * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
*/
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);
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);
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;
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;
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) {
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)))
- {
+ int diameter;
+ 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;
- 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);
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();
projects / mobile-ledger.git / blobdiff