Fix bug with measuring behavior (#8)

* Code regions

* Fix bug with measuring behavior
pull/10/head
Mattia Iavarone 7 years ago committed by GitHub
parent f4868aefa6
commit 2fe72577aa
  1. 50
      cameraview/src/main/java/com/otaliastudios/cameraview/CameraView.java

@ -94,6 +94,8 @@ public class CameraView extends FrameLayout {
init(context, attrs);
}
//region Init
@SuppressWarnings("WrongConstant")
private void init(@NonNull Context context, @Nullable AttributeSet attrs) {
TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.CameraView, 0, 0);
@ -200,10 +202,9 @@ public class CameraView extends FrameLayout {
super.onDetachedFromWindow();
}
//endregion
// Smart measuring behavior
// ------------------------
//region Measuring behavior
private String ms(int mode) {
switch (mode) {
@ -249,7 +250,7 @@ public class CameraView extends FrameLayout {
final float previewHeight = flip ? previewSize.getWidth() : previewSize.getHeight();
// If MATCH_PARENT is interpreted as AT_MOST, transform to EXACTLY
// to be consistent with our semantics.
// to be consistent with our semantics (and our docs).
final ViewGroup.LayoutParams lp = getLayoutParams();
if (widthMode == AT_MOST && lp.width == MATCH_PARENT) widthMode = EXACTLY;
if (heightMode == AT_MOST && lp.height == MATCH_PARENT) heightMode = EXACTLY;
@ -261,7 +262,7 @@ public class CameraView extends FrameLayout {
// If we have fixed dimensions (either 300dp or MATCH_PARENT), there's nothing we should do,
// other than respect it. The preview will eventually be cropped at the sides (by PreviewImpl scaling)
// except the case in which these fixed dimensions somehow fit exactly the preview aspect ratio.
// except the case in which these fixed dimensions manage to fit exactly the preview aspect ratio.
if (widthMode == EXACTLY && heightMode == EXACTLY) {
Log.e(TAG, "onMeasure, both are MATCH_PARENT or fixed value. We adapt. This means CROP_INSIDE. " +
"(" + widthValue + "x" + heightValue + ")");
@ -272,17 +273,20 @@ public class CameraView extends FrameLayout {
// If both dimensions are free, with no limits, then our size will be exactly the
// preview size. This can happen rarely, for example in scrollable containers.
if (widthMode == UNSPECIFIED && heightMode == UNSPECIFIED) {
Log.e(TAG, "onMeasure, both are completely free. We respect that and extend to the whole preview size. " +
Log.e(TAG, "onMeasure, both are completely free. " +
"We respect that and extend to the whole preview size. " +
"(" + previewWidth + "x" + previewHeight + ")");
super.onMeasure(MeasureSpec.makeMeasureSpec((int) previewWidth, EXACTLY),
super.onMeasure(
MeasureSpec.makeMeasureSpec((int) previewWidth, EXACTLY),
MeasureSpec.makeMeasureSpec((int) previewHeight, EXACTLY));
return;
}
// It sure now that at least one dimension can be determined (either because EXACTLY or AT_MOST).
// It's sure now that at least one dimension can be determined (either because EXACTLY or AT_MOST).
// This starts to seem a pleasant situation.
// If one of the dimension is completely free, take the other and fit the ratio.
// If one of the dimension is completely free (e.g. in a scrollable container),
// take the other and fit the ratio.
// One of the two might be AT_MOST, but we use the value anyway.
float ratio = previewHeight / previewWidth;
if (widthMode == UNSPECIFIED || heightMode == UNSPECIFIED) {
@ -325,7 +329,7 @@ public class CameraView extends FrameLayout {
// Last case, AT_MOST and AT_MOST. Here we can SURELY fit the aspect ratio by filling one
// dimension and adapting the other.
int height, width;
float atMostRatio = heightValue / widthValue;
float atMostRatio = (float) heightValue / (float) widthValue;
if (atMostRatio >= ratio) {
// We must reduce height.
width = widthValue;
@ -340,10 +344,9 @@ public class CameraView extends FrameLayout {
MeasureSpec.makeMeasureSpec(height, EXACTLY));
}
//endregion
// Gesture APIs and touch control
// ------------------------------
//region Gesture APIs
/**
* Maps a {@link Gesture} to a certain gesture action.
@ -468,10 +471,9 @@ public class CameraView extends FrameLayout {
return false;
}
//endregion
// Lifecycle APIs
// --------------
//region Lifecycle APIs
/**
* Returns whether the camera has started showing its preview.
@ -586,10 +588,9 @@ public class CameraView extends FrameLayout {
mWorkerHandler = null;
}
//endregion
// Public APIs for parameters and controls
// ---------------------------------------
//region Public APIs for controls
/**
* Returns a {@link CameraOptions} instance holding supported options for this camera
@ -1158,10 +1159,9 @@ public class CameraView extends FrameLayout {
}
}
//endregion
// Callbacks and dispatch
// ----------------------
//region Callbacks and dispatching
private MediaActionSound mSound;
private final boolean mUseSounds = Build.VERSION.SDK_INT >= 16;
@ -1394,10 +1394,9 @@ public class CameraView extends FrameLayout {
}
}
//endregion
// Deprecated stuff
// ----------------
//region Deprecated
/**
* This does nothing.
@ -1459,4 +1458,5 @@ public class CameraView extends FrameLayout {
return 0;
}
//endregion
}

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