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Code Issues Releases Wiki Activity

Only get text bounds once for value text

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This commit is contained in:
Erik Johansson
2017-11-22 20:38:05 +01:00
parent 44a4fa8638
commit ff9c92e9bc
1 changed files with 13 additions and 11 deletions
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24
android_app/app/src/main/java/com/health/openscale/gui/views/LinearGaugeView.java
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@@ -40,7 +40,7 @@ public class LinearGaugeView extends View {
private static final float textOffset = 10.0f;
private RectF limitRect = new RectF(0, 0, barHeight / 2, barHeight * 2);
// Pre-created rect to avoid creating many objects in onDraw
// Pre-created rect to avoid creating object in onDraw
private Rect bounds = new Rect();
private Paint rectPaintLow;
@@ -53,8 +53,8 @@ public class LinearGaugeView extends View {
private float value;
private float minValue;
private float maxValue;
private float firstLimit;
private float secondLimit;
private float firstLimit = -1.0f;
private float secondLimit = -1.0f;
public LinearGaugeView(Context context) {
super(context);
@@ -93,9 +93,6 @@ public class LinearGaugeView extends View {
infoTextPaint.setColor(Color.GRAY);
infoTextPaint.setTextSize(30);
infoTextPaint.setTextAlign(Paint.Align.CENTER);
firstLimit = -1.0f;
secondLimit = -1.0f;
}
private float valueToPosition(float value) {
@@ -103,13 +100,18 @@ public class LinearGaugeView extends View {
return getWidth() / 100.0f * percent;
}
private void drawCenteredText(Canvas canvas, String text, float centerX, float y, Paint paint) {
textPaint.getTextBounds(text, 0, text.length(), bounds);
float x = Math.max(0.0f, centerX - bounds.width() / 2.0f);
x = Math.min(x, getWidth() - bounds.width());
private void drawCenteredText(Canvas canvas, String text, float centerX, float y,
Paint paint, Rect textBounds) {
float x = Math.max(0.0f, centerX - textBounds.width() / 2.0f);
x = Math.min(x, getWidth() - textBounds.width());
canvas.drawText(text, x, y, paint);
}
private void drawCenteredText(Canvas canvas, String text, float centerX, float y, Paint paint) {
paint.getTextBounds(text, 0, text.length(), bounds);
drawCenteredText(canvas, text, centerX, y, paint, bounds);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
@@ -174,7 +176,7 @@ public class LinearGaugeView extends View {
String valueStr = String.format("%.2f", value);
indicatorPaint.getTextBounds(valueStr, 0, valueStr.length(), bounds);
drawCenteredText(canvas, valueStr, valuePos,
indicatorBottom + bounds.height() + textOffset, indicatorPaint);
indicatorBottom + bounds.height() + textOffset, indicatorPaint, bounds);
}
@Override