下面列出了android.widget.ImageView.ScaleType#CENTER_INSIDE 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* For API compatibility with the pre-ScaleType variant of the constructor. Equivalent to the
* normal constructor with {@code ScaleType.CENTER_INSIDE}.
*/
@Deprecated
public ImageRequest(
String url,
Response.Listener<Bitmap> listener,
int maxWidth,
int maxHeight,
Config decodeConfig,
Response.ErrorListener errorListener) {
this(
url,
listener,
maxWidth,
maxHeight,
ScaleType.CENTER_INSIDE,
decodeConfig,
errorListener);
}
private static ScaleType getIconScaleType(int index, int keyId) {
if (mUseLargerIcons) {
return ScaleType.FIT_CENTER;
} else {
ScaleType origScaleType = mNavbarViewInfo[index] == null ? ScaleType.CENTER :
mNavbarViewInfo[index].originalScaleType.get(keyId, ScaleType.CENTER);
if (index == 0) {
return (mNavbarHeight < 75 ? ScaleType.CENTER_INSIDE : origScaleType);
} else {
boolean hasVerticalNavbar = mGbContext.getResources().getBoolean(R.bool.hasVerticalNavbar);
return (mNavbarWidth < 75 && hasVerticalNavbar ? ScaleType.CENTER_INSIDE :
origScaleType);
}
}
}
/**
* For API compatibility with the pre-ScaleType variant of the constructor. Equivalent to
* the normal constructor with {@code ScaleType.CENTER_INSIDE}.
*/
@Deprecated
public ImageRequest(String url, Response.Listener<Bitmap> listener, int maxWidth, int maxHeight,
Config decodeConfig, Response.ErrorListener errorListener) {
this(url, listener, maxWidth, maxHeight,
ScaleType.CENTER_INSIDE, decodeConfig, errorListener);
}
/**
* For API compatibility with the pre-ScaleType variant of the constructor. Equivalent to
* the normal constructor with {@code ScaleType.CENTER_INSIDE}.
*/
@Deprecated
public ImageRequest(String url, Response.Listener<Bitmap> listener, int maxWidth, int maxHeight,
Config decodeConfig, Response.ErrorListener errorListener) {
this(url, listener, maxWidth, maxHeight,
ScaleType.CENTER_INSIDE, decodeConfig, errorListener);
}
/**
* For API compatibility with the pre-ScaleType variant of the constructor. Equivalent to
* the normal constructor with {@code ScaleType.CENTER_INSIDE}.
*/
@Deprecated
public ImageRequest(String url, Response.Listener<Bitmap> listener, int maxWidth, int maxHeight,
Config decodeConfig, Response.ErrorListener errorListener) {
this(url, listener, maxWidth, maxHeight,
ScaleType.CENTER_INSIDE, decodeConfig, errorListener);
}
@ReactProp(name = "scaleType")
public void setScaleType(PhotoViewWrapper view, String scaleType) {
ScaleType value = ScaleType.CENTER;
switch (scaleType) {
case "center":
value = ScaleType.CENTER;
break;
case "centerCrop":
value = ScaleType.CENTER_CROP;
break;
case "centerInside":
value = ScaleType.CENTER_INSIDE;
break;
case "fitCenter":
value = ScaleType.FIT_CENTER;
break;
case "fitStart":
value = ScaleType.FIT_START;
break;
case "fitEnd":
value = ScaleType.FIT_END;
break;
case "fitXY":
value = ScaleType.FIT_XY;
break;
case "matrix":
value = ScaleType.MATRIX;
break;
}
view.setScaleType(value);
}
/**
* For API compatibility with the pre-ScaleType variant of the constructor. Equivalent to
* the normal constructor with {@code ScaleType.CENTER_INSIDE}.
*/
@Deprecated
public ImageRequest(String url, Response.Listener<Bitmap> listener, int maxWidth, int maxHeight,
Config decodeConfig, Response.ErrorListener errorListener) {
this(url, listener, maxWidth, maxHeight,
ScaleType.CENTER_INSIDE, decodeConfig, errorListener);
}
/**
* For API compatibility with the pre-ScaleType variant of the constructor. Equivalent to
* the normal constructor with {@code ScaleType.CENTER_INSIDE}.
*/
@Deprecated
public ImageRequest(String url, Response.Listener<Bitmap> listener, int maxWidth, int maxHeight,
Config decodeConfig, Response.ErrorListener errorListener) {
this(url, listener, maxWidth, maxHeight,
ScaleType.CENTER_INSIDE, decodeConfig, errorListener);
}
/**
* For API compatibility with the pre-ScaleType variant of the constructor. Equivalent to
* the normal constructor with {@code ScaleType.CENTER_INSIDE}.
*/
@Deprecated
public ImageRequest(String url, Response.Listener<Bitmap> listener, int maxWidth, int maxHeight,
Config decodeConfig, Response.ErrorListener errorListener) {
this(url, listener, maxWidth, maxHeight,
ScaleType.CENTER_INSIDE, decodeConfig, errorListener);
}
/**
* For API compatibility with the pre-ScaleType variant of the constructor. Equivalent to
* the normal constructor with {@code ScaleType.CENTER_INSIDE}.
*/
@Deprecated
public ImageRequest(String url, Response.Listener<Bitmap> listener, int maxWidth, int maxHeight,
Config decodeConfig, Response.ErrorListener errorListener) {
this(url, listener, maxWidth, maxHeight,
ScaleType.CENTER_INSIDE, decodeConfig, errorListener);
}
/**
* For API compatibility with the pre-ScaleType variant of the constructor. Equivalent to
* the normal constructor with {@code ScaleType.CENTER_INSIDE}.
*/
@Deprecated
public ImageRequest(String url, Response.Listener<Bitmap> listener, int maxWidth, int maxHeight,
Config decodeConfig, Response.ErrorListener errorListener) {
this(url, listener, maxWidth, maxHeight,
ScaleType.CENTER_INSIDE, decodeConfig, errorListener);
}
@Test
public void parseNetworkResponse_resizing() throws Exception {
// This is a horrible hack but Robolectric doesn't have a way to provide
// width and height hints for decodeByteArray. It works because the byte array
// "file:fake" is ASCII encodable and thus the name in Robolectric's fake
// bitmap creator survives as-is, and provideWidthAndHeightHints puts
// "file:" + name in its lookaside map. I write all this because it will
// probably break mysteriously at some point and I feel terrible about your
// having to debug it.
byte[] jpegBytes = "file:fake".getBytes(StandardCharsets.UTF_8);
ShadowBitmapFactory.provideWidthAndHeightHints("fake", 1024, 500);
NetworkResponse jpeg = new NetworkResponse(jpegBytes);
// Scale the image uniformly (maintain the image's aspect ratio) so that
// both dimensions (width and height) of the image will be equal to or
// less than the corresponding dimension of the view.
ScaleType scalteType = ScaleType.CENTER_INSIDE;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250); // exactly half
verifyResize(jpeg, 511, 249, scalteType, 509, 249); // just under half
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500); // larger
verifyResize(jpeg, 500, 500, scalteType, 500, 244); // keep same ratio
// Specify only width, preserve aspect ratio
verifyResize(jpeg, 512, 0, scalteType, 512, 250);
verifyResize(jpeg, 800, 0, scalteType, 800, 390);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height, preserve aspect ratio
verifyResize(jpeg, 0, 250, scalteType, 512, 250);
verifyResize(jpeg, 0, 391, scalteType, 800, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
// Scale the image uniformly (maintain the image's aspect ratio) so that
// both dimensions (width and height) of the image will be equal to or
// larger than the corresponding dimension of the view.
scalteType = ScaleType.CENTER_CROP;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250);
verifyResize(jpeg, 511, 249, scalteType, 511, 249);
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500);
verifyResize(jpeg, 500, 500, scalteType, 1024, 500);
// Specify only width
verifyResize(jpeg, 512, 0, scalteType, 512, 250);
verifyResize(jpeg, 800, 0, scalteType, 800, 390);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height
verifyResize(jpeg, 0, 250, scalteType, 512, 250);
verifyResize(jpeg, 0, 391, scalteType, 800, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
// Scale in X and Y independently, so that src matches dst exactly. This
// may change the aspect ratio of the src.
scalteType = ScaleType.FIT_XY;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250);
verifyResize(jpeg, 511, 249, scalteType, 511, 249);
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500);
verifyResize(jpeg, 500, 500, scalteType, 500, 500);
// Specify only width
verifyResize(jpeg, 512, 0, scalteType, 512, 500);
verifyResize(jpeg, 800, 0, scalteType, 800, 500);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height
verifyResize(jpeg, 0, 250, scalteType, 1024, 250);
verifyResize(jpeg, 0, 391, scalteType, 1024, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
}
@Override
public void reset(@NonNull final Context context, @NonNull final Sizes sizes, @Nullable final ScaleType scaleType, final float rotateDegrees, final boolean readMode) {
final int drawableWidth = rotateDegrees % 180 == 0 ? sizes.drawableSize.getWidth() : sizes.drawableSize.getHeight();
final int drawableHeight = rotateDegrees % 180 == 0 ? sizes.drawableSize.getHeight() : sizes.drawableSize.getWidth();
final int imageWidth = rotateDegrees % 180 == 0 ? sizes.imageSize.getWidth() : sizes.imageSize.getHeight();
final int imageHeight = rotateDegrees % 180 == 0 ? sizes.imageSize.getHeight() : sizes.imageSize.getWidth();
final float widthScale = (float) sizes.viewSize.getWidth() / drawableWidth;
final float heightScale = (float) sizes.viewSize.getHeight() / drawableHeight;
final boolean imageThanViewLarge = drawableWidth > sizes.viewSize.getWidth() || drawableHeight > sizes.viewSize.getHeight();
final ScaleType finalScaleType;
if (scaleType == ScaleType.MATRIX) {
finalScaleType = ScaleType.FIT_CENTER;
} else if (scaleType == ScaleType.CENTER_INSIDE) {
finalScaleType = imageThanViewLarge ? ScaleType.FIT_CENTER : ScaleType.CENTER;
} else {
finalScaleType = scaleType;
}
// 小的是完整显示比例，大的是充满比例
fullZoomScale = Math.min(widthScale, heightScale);
fillZoomScale = Math.max(widthScale, heightScale);
originZoomScale = Math.max((float) imageWidth / drawableWidth, (float) imageHeight / drawableHeight);
initZoomScale = getInitScale(context, sizes, finalScaleType, rotateDegrees, readMode);
ImageSizeCalculator sizeCalculator = Sketch.with(context).getConfiguration().getSizeCalculator();
if (readMode && sizeCalculator.canUseReadModeByHeight(imageWidth, imageHeight)) {
// 阅读模式下保证阅读效果最重要
minZoomScale = fullZoomScale;
maxZoomScale = Math.max(originZoomScale, fillZoomScale);
} else if (readMode && sizeCalculator.canUseReadModeByWidth(imageWidth, imageHeight)) {
// 阅读模式下保证阅读效果最重要
minZoomScale = fullZoomScale;
maxZoomScale = Math.max(originZoomScale, fillZoomScale);
} else if (finalScaleType == ScaleType.CENTER) {
minZoomScale = 1.0f;
maxZoomScale = Math.max(originZoomScale, fillZoomScale);
} else if (finalScaleType == ScaleType.CENTER_CROP) {
minZoomScale = fillZoomScale;
// 由于CENTER_CROP的时候最小缩放比例就是充满比例，所以最大缩放比例一定要比充满比例大的多
maxZoomScale = Math.max(originZoomScale, fillZoomScale * 1.5f);
} else if (finalScaleType == ScaleType.FIT_START || finalScaleType == ScaleType.FIT_CENTER || finalScaleType == ScaleType.FIT_END) {
minZoomScale = fullZoomScale;
// 如果原始比例仅仅比充满比例大一点点，还是用充满比例作为最大缩放比例比较好，否则谁大用谁
if (originZoomScale > fillZoomScale && (fillZoomScale * 1.2f) >= originZoomScale) {
maxZoomScale = fillZoomScale;
} else {
maxZoomScale = Math.max(originZoomScale, fillZoomScale);
}
// 最大缩放比例和最小缩放比例的差距不能太小，最小得是最小缩放比例的1.5倍
maxZoomScale = Math.max(maxZoomScale, minZoomScale * 1.5f);
} else if (finalScaleType == ScaleType.FIT_XY) {
minZoomScale = fullZoomScale;
maxZoomScale = fullZoomScale;
} else {
// 基本不会走到这儿
minZoomScale = fullZoomScale;
maxZoomScale = fullZoomScale;
}
// 这样的情况基本不会出现，不过还是加层保险
if (minZoomScale > maxZoomScale) {
minZoomScale = minZoomScale + maxZoomScale;
maxZoomScale = minZoomScale - maxZoomScale;
minZoomScale = minZoomScale - maxZoomScale;
}
// 双击缩放比例始终由最小缩放比例和最大缩放比例组成
doubleClickZoomScales = new float[]{minZoomScale, maxZoomScale};
}
/**
* For API compatibility with the pre-ScaleType variant of the constructor. Equivalent to
* the normal constructor with {@code ScaleType.CENTER_INSIDE}.
*/
@Deprecated
public ImageRequest(String url, Response.Listener<Bitmap> listener, int maxWidth, int maxHeight, Config decodeConfig, Response.ErrorListener errorListener) {
this(url, listener, maxWidth, maxHeight, ScaleType.CENTER_INSIDE, decodeConfig,
errorListener);
}
/**
* For API compatibility with the pre-ScaleType variant of the constructor. Equivalent to
* the normal constructor with {@code ScaleType.CENTER_INSIDE}.
*/
@Deprecated
public ImageRequest(String url, Response.Listener<Bitmap> listener, int maxWidth, int maxHeight, Config decodeConfig, Response.ErrorListener errorListener) {
this(url, listener, maxWidth, maxHeight, ScaleType.CENTER_INSIDE, decodeConfig,
errorListener);
}
@Test public void parseNetworkResponse_resizing() throws Exception {
// This is a horrible hack but Robolectric doesn't have a way to provide
// width and height hints for decodeByteArray. It works because the byte array
// "file:fake" is ASCII encodable and thus the name in Robolectric's fake
// bitmap creator survives as-is, and provideWidthAndHeightHints puts
// "file:" + name in its lookaside map. I write all this because it will
// probably break mysteriously at some point and I feel terrible about your
// having to debug it.
byte[] jpegBytes = "file:fake".getBytes();
ShadowBitmapFactory.provideWidthAndHeightHints("fake", 1024, 500);
NetworkResponse jpeg = new NetworkResponse(jpegBytes);
// Scale the image uniformly (maintain the image's aspect ratio) so that
// both dimensions (width and height) of the image will be equal to or
// less than the corresponding dimension of the view.
ScaleType scalteType = ScaleType.CENTER_INSIDE;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250); // exactly half
verifyResize(jpeg, 511, 249, scalteType, 509, 249); // just under half
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500); // larger
verifyResize(jpeg, 500, 500, scalteType, 500, 244); // keep same ratio
// Specify only width, preserve aspect ratio
verifyResize(jpeg, 512, 0, scalteType, 512, 250);
verifyResize(jpeg, 800, 0, scalteType, 800, 390);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height, preserve aspect ratio
verifyResize(jpeg, 0, 250, scalteType, 512, 250);
verifyResize(jpeg, 0, 391, scalteType, 800, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
// Scale the image uniformly (maintain the image's aspect ratio) so that
// both dimensions (width and height) of the image will be equal to or
// larger than the corresponding dimension of the view.
scalteType = ScaleType.CENTER_CROP;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250);
verifyResize(jpeg, 511, 249, scalteType, 511, 249);
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500);
verifyResize(jpeg, 500, 500, scalteType, 1024, 500);
// Specify only width
verifyResize(jpeg, 512, 0, scalteType, 512, 250);
verifyResize(jpeg, 800, 0, scalteType, 800, 390);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height
verifyResize(jpeg, 0, 250, scalteType, 512, 250);
verifyResize(jpeg, 0, 391, scalteType, 800, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
// Scale in X and Y independently, so that src matches dst exactly. This
// may change the aspect ratio of the src.
scalteType = ScaleType.FIT_XY;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250);
verifyResize(jpeg, 511, 249, scalteType, 511, 249);
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500);
verifyResize(jpeg, 500, 500, scalteType, 500, 500);
// Specify only width
verifyResize(jpeg, 512, 0, scalteType, 512, 500);
verifyResize(jpeg, 800, 0, scalteType, 800, 500);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height
verifyResize(jpeg, 0, 250, scalteType, 1024, 250);
verifyResize(jpeg, 0, 391, scalteType, 1024, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
}
@Test public void parseNetworkResponse_resizing() throws Exception {
// This is a horrible hack but Robolectric doesn't have a way to provide
// width and height hints for decodeByteArray. It works because the byte array
// "file:fake" is ASCII encodable and thus the name in Robolectric's fake
// bitmap creator survives as-is, and provideWidthAndHeightHints puts
// "file:" + name in its lookaside map. I write all this because it will
// probably break mysteriously at some point and I feel terrible about your
// having to debug it.
byte[] jpegBytes = "file:fake".getBytes();
ShadowBitmapFactory.provideWidthAndHeightHints("fake", 1024, 500);
NetworkResponse jpeg = new NetworkResponse(jpegBytes);
// Scale the image uniformly (maintain the image's aspect ratio) so that
// both dimensions (width and height) of the image will be equal to or
// less than the corresponding dimension of the view.
ScaleType scalteType = ScaleType.CENTER_INSIDE;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250); // exactly half
verifyResize(jpeg, 511, 249, scalteType, 509, 249); // just under half
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500); // larger
verifyResize(jpeg, 500, 500, scalteType, 500, 244); // keep same ratio
// Specify only width, preserve aspect ratio
verifyResize(jpeg, 512, 0, scalteType, 512, 250);
verifyResize(jpeg, 800, 0, scalteType, 800, 390);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height, preserve aspect ratio
verifyResize(jpeg, 0, 250, scalteType, 512, 250);
verifyResize(jpeg, 0, 391, scalteType, 800, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
// Scale the image uniformly (maintain the image's aspect ratio) so that
// both dimensions (width and height) of the image will be equal to or
// larger than the corresponding dimension of the view.
scalteType = ScaleType.CENTER_CROP;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250);
verifyResize(jpeg, 511, 249, scalteType, 511, 249);
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500);
verifyResize(jpeg, 500, 500, scalteType, 1024, 500);
// Specify only width
verifyResize(jpeg, 512, 0, scalteType, 512, 250);
verifyResize(jpeg, 800, 0, scalteType, 800, 390);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height
verifyResize(jpeg, 0, 250, scalteType, 512, 250);
verifyResize(jpeg, 0, 391, scalteType, 800, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
// Scale in X and Y independently, so that src matches dst exactly. This
// may change the aspect ratio of the src.
scalteType = ScaleType.FIT_XY;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250);
verifyResize(jpeg, 511, 249, scalteType, 511, 249);
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500);
verifyResize(jpeg, 500, 500, scalteType, 500, 500);
// Specify only width
verifyResize(jpeg, 512, 0, scalteType, 512, 500);
verifyResize(jpeg, 800, 0, scalteType, 800, 500);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height
verifyResize(jpeg, 0, 250, scalteType, 1024, 250);
verifyResize(jpeg, 0, 391, scalteType, 1024, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
}
@Test public void parseNetworkResponse_resizing() throws Exception {
// This is a horrible hack but Robolectric doesn't have a way to provide
// width and height hints for decodeByteArray. It works because the byte array
// "file:fake" is ASCII encodable and thus the name in Robolectric's fake
// bitmap creator survives as-is, and provideWidthAndHeightHints puts
// "file:" + name in its lookaside map. I write all this because it will
// probably break mysteriously at some point and I feel terrible about your
// having to debug it.
byte[] jpegBytes = "file:fake".getBytes();
ShadowBitmapFactory.provideWidthAndHeightHints("fake", 1024, 500);
NetworkResponse jpeg = new NetworkResponse(jpegBytes);
// Scale the image uniformly (maintain the image's aspect ratio) so that
// both dimensions (width and height) of the image will be equal to or
// less than the corresponding dimension of the view.
ScaleType scalteType = ScaleType.CENTER_INSIDE;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250); // exactly half
verifyResize(jpeg, 511, 249, scalteType, 509, 249); // just under half
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500); // larger
verifyResize(jpeg, 500, 500, scalteType, 500, 244); // keep same ratio
// Specify only width, preserve aspect ratio
verifyResize(jpeg, 512, 0, scalteType, 512, 250);
verifyResize(jpeg, 800, 0, scalteType, 800, 390);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height, preserve aspect ratio
verifyResize(jpeg, 0, 250, scalteType, 512, 250);
verifyResize(jpeg, 0, 391, scalteType, 800, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
// Scale the image uniformly (maintain the image's aspect ratio) so that
// both dimensions (width and height) of the image will be equal to or
// larger than the corresponding dimension of the view.
scalteType = ScaleType.CENTER_CROP;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250);
verifyResize(jpeg, 511, 249, scalteType, 511, 249);
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500);
verifyResize(jpeg, 500, 500, scalteType, 1024, 500);
// Specify only width
verifyResize(jpeg, 512, 0, scalteType, 512, 250);
verifyResize(jpeg, 800, 0, scalteType, 800, 390);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height
verifyResize(jpeg, 0, 250, scalteType, 512, 250);
verifyResize(jpeg, 0, 391, scalteType, 800, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
// Scale in X and Y independently, so that src matches dst exactly. This
// may change the aspect ratio of the src.
scalteType = ScaleType.FIT_XY;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250);
verifyResize(jpeg, 511, 249, scalteType, 511, 249);
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500);
verifyResize(jpeg, 500, 500, scalteType, 500, 500);
// Specify only width
verifyResize(jpeg, 512, 0, scalteType, 512, 500);
verifyResize(jpeg, 800, 0, scalteType, 800, 500);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height
verifyResize(jpeg, 0, 250, scalteType, 1024, 250);
verifyResize(jpeg, 0, 391, scalteType, 1024, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
}
@Test public void parseNetworkResponse_resizing() throws Exception {
// This is a horrible hack but Robolectric doesn't have a way to provide
// width and height hints for decodeByteArray. It works because the byte array
// "file:fake" is ASCII encodable and thus the name in Robolectric's fake
// bitmap creator survives as-is, and provideWidthAndHeightHints puts
// "file:" + name in its lookaside map. I write all this because it will
// probably break mysteriously at some point and I feel terrible about your
// having to debug it.
byte[] jpegBytes = "file:fake".getBytes();
ShadowBitmapFactory.provideWidthAndHeightHints("fake", 1024, 500);
NetworkResponse jpeg = new NetworkResponse(jpegBytes);
// Scale the image uniformly (maintain the image's aspect ratio) so that
// both dimensions (width and height) of the image will be equal to or
// less than the corresponding dimension of the view.
ScaleType scalteType = ScaleType.CENTER_INSIDE;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250); // exactly half
verifyResize(jpeg, 511, 249, scalteType, 509, 249); // just under half
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500); // larger
verifyResize(jpeg, 500, 500, scalteType, 500, 244); // keep same ratio
// Specify only width, preserve aspect ratio
verifyResize(jpeg, 512, 0, scalteType, 512, 250);
verifyResize(jpeg, 800, 0, scalteType, 800, 390);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height, preserve aspect ratio
verifyResize(jpeg, 0, 250, scalteType, 512, 250);
verifyResize(jpeg, 0, 391, scalteType, 800, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
// Scale the image uniformly (maintain the image's aspect ratio) so that
// both dimensions (width and height) of the image will be equal to or
// larger than the corresponding dimension of the view.
scalteType = ScaleType.CENTER_CROP;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250);
verifyResize(jpeg, 511, 249, scalteType, 511, 249);
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500);
verifyResize(jpeg, 500, 500, scalteType, 1024, 500);
// Specify only width
verifyResize(jpeg, 512, 0, scalteType, 512, 250);
verifyResize(jpeg, 800, 0, scalteType, 800, 390);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height
verifyResize(jpeg, 0, 250, scalteType, 512, 250);
verifyResize(jpeg, 0, 391, scalteType, 800, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
// Scale in X and Y independently, so that src matches dst exactly. This
// may change the aspect ratio of the src.
scalteType = ScaleType.FIT_XY;
// Exact sizes
verifyResize(jpeg, 512, 250, scalteType, 512, 250);
verifyResize(jpeg, 511, 249, scalteType, 511, 249);
verifyResize(jpeg, 1080, 500, scalteType, 1024, 500);
verifyResize(jpeg, 500, 500, scalteType, 500, 500);
// Specify only width
verifyResize(jpeg, 512, 0, scalteType, 512, 500);
verifyResize(jpeg, 800, 0, scalteType, 800, 500);
verifyResize(jpeg, 1024, 0, scalteType, 1024, 500);
// Specify only height
verifyResize(jpeg, 0, 250, scalteType, 1024, 250);
verifyResize(jpeg, 0, 391, scalteType, 1024, 391);
verifyResize(jpeg, 0, 500, scalteType, 1024, 500);
// No resize
verifyResize(jpeg, 0, 0, scalteType, 1024, 500);
}
@SuppressWarnings("ConstantConditions")
private void resetBaseMatrix() {
baseMatrix.reset();
Size viewSize = imageZoomer.getViewSize();
Size imageSize = imageZoomer.getImageSize();
Size drawableSize = imageZoomer.getDrawableSize();
boolean readMode = imageZoomer.isReadMode();
ScaleType scaleType = imageZoomer.getScaleType();
final int drawableWidth = imageZoomer.getRotateDegrees() % 180 == 0 ? drawableSize.getWidth() : drawableSize.getHeight();
final int drawableHeight = imageZoomer.getRotateDegrees() % 180 == 0 ? drawableSize.getHeight() : drawableSize.getWidth();
final int imageWidth = imageZoomer.getRotateDegrees() % 180 == 0 ? imageSize.getWidth() : imageSize.getHeight();
final int imageHeight = imageZoomer.getRotateDegrees() % 180 == 0 ? imageSize.getHeight() : imageSize.getWidth();
boolean imageThanViewLarge = drawableWidth > viewSize.getWidth() || drawableHeight > viewSize.getHeight();
final ScaleType finalScaleType;
if (scaleType == ScaleType.MATRIX) {
finalScaleType = ScaleType.FIT_CENTER;
} else if (scaleType == ScaleType.CENTER_INSIDE) {
finalScaleType = imageThanViewLarge ? ScaleType.FIT_CENTER : ScaleType.CENTER;
} else {
finalScaleType = scaleType;
}
float initScale = imageZoomer.getZoomScales().getInitZoomScale();
ImageSizeCalculator sizeCalculator = Sketch.with(imageZoomer.getImageView().getContext()).getConfiguration().getSizeCalculator();
if (readMode && sizeCalculator.canUseReadModeByHeight(imageWidth, imageHeight)) {
baseMatrix.postScale(initScale, initScale);
} else if (readMode && sizeCalculator.canUseReadModeByWidth(imageWidth, imageHeight)) {
baseMatrix.postScale(initScale, initScale);
} else if (finalScaleType == ScaleType.CENTER) {
baseMatrix.postScale(initScale, initScale);
baseMatrix.postTranslate((viewSize.getWidth() - drawableWidth) / 2F, (viewSize.getHeight() - drawableHeight) / 2F);
} else if (finalScaleType == ScaleType.CENTER_CROP) {
baseMatrix.postScale(initScale, initScale);
baseMatrix.postTranslate((viewSize.getWidth() - drawableWidth * initScale) / 2F, (viewSize.getHeight() - drawableHeight * initScale) / 2F);
} else if (finalScaleType == ScaleType.FIT_START) {
baseMatrix.postScale(initScale, initScale);
baseMatrix.postTranslate(0, 0);
} else if (finalScaleType == ScaleType.FIT_END) {
baseMatrix.postScale(initScale, initScale);
baseMatrix.postTranslate(0, (viewSize.getHeight() - drawableHeight * initScale));
} else if (finalScaleType == ScaleType.FIT_CENTER) {
baseMatrix.postScale(initScale, initScale);
baseMatrix.postTranslate(0, (viewSize.getHeight() - drawableHeight * initScale) / 2F);
} else if (finalScaleType == ScaleType.FIT_XY) {
RectF mTempSrc = new RectF(0, 0, drawableWidth, drawableHeight);
RectF mTempDst = new RectF(0, 0, viewSize.getWidth(), viewSize.getHeight());
baseMatrix.setRectToRect(mTempSrc, mTempDst, Matrix.ScaleToFit.FILL);
}
}