yenru0/EhViewer
1
0 Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Make minimum size work for FixedAspectImageView

Browse Source
This commit is contained in:
seven332 committed 2015-02-17 10:38:09 +08:00
1 parent 852db378b0
commit 940d135057
1 file changed
+72 -26
Download Patch File Download Diff File Expand all files Collapse all files
app/src/main/java/com/hippo/widget/FixedAspectImageView.java
+72 -26
View File
@@ -22,6 +22,7 @@ import android.util.AttributeSet;
import android.widget.ImageView;
import com.hippo.ehviewer.R;
import com.hippo.util.MathUtils;
import com.hippo.util.ViewUtils;
/**
@@ -31,12 +32,19 @@ public class FixedAspectImageView extends ImageView {
private static final String TAG = FixedAspectImageView.class.getSimpleName();
private static final int[] ATTRS = new int[] {
private static final int[] MIN_ATTRS = {
android.R.attr.minWidth,
android.R.attr.minHeight
};
private static final int[] ATTRS = {
android.R.attr.adjustViewBounds,
android.R.attr.maxWidth,
android.R.attr.maxHeight
};
private int mMinWidth = 0;
private int mMinHeight = 0;
private int mMaxWidth = Integer.MAX_VALUE;
private int mMaxHeight = Integer.MAX_VALUE;
private boolean mAdjustViewBounds = false;
@@ -57,6 +65,11 @@ public class FixedAspectImageView extends ImageView {
TypedArray a;
// Make sure we get value from xml
a = context.obtainStyledAttributes(attrs, MIN_ATTRS, defStyle, 0);
setMinimumWidth(a.getDimensionPixelSize(0, 0));
setMinimumHeight(a.getDimensionPixelSize(1, 0));
a.recycle();
a = context.obtainStyledAttributes(attrs, ATTRS, defStyle, 0);
setAdjustViewBounds(a.getBoolean(0, false));
setMaxWidth(a.getDimensionPixelSize(1, Integer.MAX_VALUE));
@@ -69,6 +82,18 @@ public class FixedAspectImageView extends ImageView {
a.recycle();
}
@Override
public void setMinimumWidth(int minWidth) {
super.setMinimumWidth(minWidth);
mMinWidth = minWidth;
}
@Override
public void setMinimumHeight(int minHeight) {
super.setMinimumHeight(minHeight);
mMinHeight = minHeight;
}
@Override
public void setMaxWidth(int maxWidth) {
super.setMaxWidth(maxWidth);
@@ -104,32 +129,53 @@ public class FixedAspectImageView extends ImageView {
requestLayout();
}
private int resolveAdjustedSize(int desiredSize, int maxSize,
private int resolveAdjustedSize(int desiredSize, int minSize, int maxSize,
int measureSpec) {
int result = desiredSize;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
switch (specMode) {
case MeasureSpec.UNSPECIFIED:
/* Parent says we can be as big as we want. Just don't be larger
* than max size imposed on ourselves.
*/
result = Math.min(desiredSize, maxSize);
break;
case MeasureSpec.AT_MOST:
// Parent says we can be as big as we want, up to specSize.
// Don't be larger than specSize, and don't be larger than
// the max size imposed on ourselves.
result = Math.min(Math.min(desiredSize, specSize), maxSize);
break;
case MeasureSpec.EXACTLY:
// No choice. Do what we are told.
result = specSize;
break;
case MeasureSpec.UNSPECIFIED:
// Parent says we can be as big as we want. Just don't be smaller
// than min size, and don't be larger than max size.
result = MathUtils.clamp(desiredSize, minSize, maxSize);
break;
case MeasureSpec.AT_MOST:
// Parent says we can be as big as we want, up to specSize.
// Don't be larger than specSize, and don't be smaller
// than min size, and don't be larger than max size.
result = Math.min(MathUtils.clamp(desiredSize, minSize, maxSize), specSize);
break;
case MeasureSpec.EXACTLY:
// No choice. Do what we are told.
result = specSize;
break;
}
return result;
}
private boolean isSizeAcceptable(int size, int minSize, int maxSize, int measureSpec) {
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
switch (specMode) {
case MeasureSpec.UNSPECIFIED:
// Parent says we can be as big as we want. Just don't be smaller
// than min size, and don't be larger than max size.
return size >= minSize && size <= maxSize;
case MeasureSpec.AT_MOST:
// Parent says we can be as big as we want, up to specSize.
// Don't be larger than specSize, and don't be smaller
// than min size, and don't be larger than max size.
return size <= specSize && size >= minSize && size <= maxSize;
case MeasureSpec.EXACTLY:
// No choice.
return size == specSize;
default:
// WTF? Return true to make you happy. (´・ω・`)
return true;
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int w;
@@ -187,10 +233,10 @@ public class FixedAspectImageView extends ImageView {
// least one dimension.
// Get the max possible width given our constraints
widthSize = resolveAdjustedSize(w + pleft + pright, mMaxWidth, widthMeasureSpec);
widthSize = resolveAdjustedSize(w + pleft + pright, mMinWidth, mMaxWidth, widthMeasureSpec);
// Get the max possible height given our constraints
heightSize = resolveAdjustedSize(h + ptop + pbottom, mMaxHeight, heightMeasureSpec);
heightSize = resolveAdjustedSize(h + ptop + pbottom, mMinHeight, mMaxHeight, heightMeasureSpec);
if (desiredAspect != 0.0f) {
// See what our actual aspect ratio is
@@ -206,11 +252,11 @@ public class FixedAspectImageView extends ImageView {
pleft + pright;
// Allow the width to outgrow its original estimate if height is fixed.
if (!resizeHeight) {
widthSize = resolveAdjustedSize(newWidth, mMaxWidth, widthMeasureSpec);
}
//if (!resizeHeight) {
//widthSize = resolveAdjustedSize(newWidth, mMinWidth, mMaxWidth, widthMeasureSpec);
//}
if (newWidth <= widthSize) {
if (isSizeAcceptable(newWidth, mMinWidth, mMaxWidth, widthMeasureSpec)) {
widthSize = newWidth;
done = true;
}
@@ -223,11 +269,11 @@ public class FixedAspectImageView extends ImageView {
// Allow the height to outgrow its original estimate if width is fixed.
if (!resizeWidth) {
heightSize = resolveAdjustedSize(newHeight, mMaxHeight,
heightSize = resolveAdjustedSize(newHeight, mMinHeight, mMaxHeight,
heightMeasureSpec);
}
if (newHeight <= heightSize) {
if (isSizeAcceptable(newHeight, mMinHeight, mMaxHeight, heightMeasureSpec)) {
heightSize = newHeight;
}
}