| Methods Summary |
|---|
| private void | applyColorMod()
if (mDrawable != null) {
mDrawable.setColorFilter(mColorFilter);
mDrawable.setAlpha(mAlpha * mViewAlphaScale >> 8);
}
|
| public final void | clearColorFilter()
setColorFilter(null);
|
| private void | configureBounds()
if (mDrawable == null || !mHaveFrame) {
return;
}
int dwidth = mDrawableWidth;
int dheight = mDrawableHeight;
int vwidth = getWidth() - mPaddingLeft - mPaddingRight;
int vheight = getHeight() - mPaddingTop - mPaddingBottom;
boolean fits = (dwidth < 0 || vwidth == dwidth) &&
(dheight < 0 || vheight == dheight);
if (dwidth <= 0 || dheight <= 0 || ScaleType.FIT_XY == mScaleType) {
/* If the drawable has no intrinsic size, or we're told to
scaletofit, then we just fill our entire view.
*/
mDrawable.setBounds(0, 0, vwidth, vheight);
mDrawMatrix = null;
} else {
// We need to do the scaling ourself, so have the drawable
// use its native size.
mDrawable.setBounds(0, 0, dwidth, dheight);
if (ScaleType.MATRIX == mScaleType) {
// Use the specified matrix as-is.
if (mMatrix.isIdentity()) {
mDrawMatrix = null;
} else {
mDrawMatrix = mMatrix;
}
} else if (fits) {
// The bitmap fits exactly, no transform needed.
mDrawMatrix = null;
} else if (ScaleType.CENTER == mScaleType) {
// Center bitmap in view, no scaling.
mDrawMatrix = mMatrix;
mDrawMatrix.setTranslate((vwidth - dwidth) * 0.5f,
(vheight - dheight) * 0.5f);
} else if (ScaleType.CENTER_CROP == mScaleType) {
mDrawMatrix = mMatrix;
float scale;
float dx = 0, dy = 0;
if (dwidth * vheight > vwidth * dheight) {
scale = (float) vheight / (float) dheight;
dx = (vwidth - dwidth * scale) * 0.5f;
} else {
scale = (float) vwidth / (float) dwidth;
dy = (vheight - dheight * scale) * 0.5f;
}
mDrawMatrix.setScale(scale, scale);
mDrawMatrix.postTranslate(dx, dy);
} else if (ScaleType.CENTER_INSIDE == mScaleType) {
mDrawMatrix = mMatrix;
float scale;
float dx;
float dy;
if (dwidth <= vwidth && dheight <= vheight) {
scale = 1.0f;
} else {
scale = Math.min((float) vwidth / (float) dwidth,
(float) vheight / (float) dheight);
}
dx = (vwidth - dwidth * scale) * 0.5f;
dy = (vheight - dheight * scale) * 0.5f;
mDrawMatrix.setScale(scale, scale);
mDrawMatrix.postTranslate(dx, dy);
} else {
// Generate the required transform.
mTempSrc.set(0, 0, dwidth, dheight);
mTempDst.set(0, 0, vwidth, vheight);
mDrawMatrix = mMatrix;
mDrawMatrix.setRectToRect(mTempSrc, mTempDst,
scaleTypeToScaleToFit(mScaleType));
}
}
|
| protected void | drawableStateChanged()
super.drawableStateChanged();
Drawable d = mDrawable;
if (d != null && d.isStateful()) {
d.setState(getDrawableState());
}
|
| public int | getBaseline()
return mBaselineAligned ? getMeasuredHeight() : -1;
|
| public android.graphics.drawable.Drawable | getDrawable()Return the view's drawable, or null if no drawable has been
assigned.
return mDrawable;
|
| public android.graphics.Matrix | getImageMatrix()Return the view's optional matrix. This is applied to the
view's drawable when it is drawn. If there is not matrix,
this method will return null.
Do not change this matrix in place. If you want a different matrix
applied to the drawable, be sure to call setImageMatrix().
return mMatrix;
|
| public android.widget.ImageView$ScaleType | getScaleType()Return the current scale type in use by this ImageView.
return mScaleType;
|
| private void | initImageView()
mMatrix = new Matrix();
mScaleType = ScaleType.FIT_CENTER;
|
| public void | invalidateDrawable(android.graphics.drawable.Drawable dr)
if (dr == mDrawable) {
/* we invalidate the whole view in this case because it's very
* hard to know where the drawable actually is. This is made
* complicated because of the offsets and transformations that
* can be applied. In theory we could get the drawable's bounds
* and run them through the transformation and offsets, but this
* is probably not worth the effort.
*/
invalidate();
} else {
super.invalidateDrawable(dr);
}
|
| public int[] | onCreateDrawableState(int extraSpace)
if (mState == null) {
return super.onCreateDrawableState(extraSpace);
} else if (!mMergeState) {
return mState;
} else {
return mergeDrawableStates(
super.onCreateDrawableState(extraSpace + mState.length), mState);
}
|
| protected void | onDraw(android.graphics.Canvas canvas)
super.onDraw(canvas);
if (mDrawable == null) {
return; // couldn't resolve the URI
}
if (mDrawableWidth == 0 || mDrawableHeight == 0) {
return; // nothing to draw (empty bounds)
}
if (mDrawMatrix == null && mPaddingTop == 0 && mPaddingLeft == 0) {
mDrawable.draw(canvas);
} else {
int saveCount = canvas.getSaveCount();
canvas.save();
if (mCropToPadding) {
final int scrollX = mScrollX;
final int scrollY = mScrollY;
canvas.clipRect(scrollX + mPaddingLeft, scrollY + mPaddingTop,
scrollX + mRight - mLeft - mPaddingRight,
scrollY + mBottom - mTop - mPaddingBottom);
}
canvas.translate(mPaddingLeft, mPaddingTop);
if (mDrawMatrix != null) {
canvas.concat(mDrawMatrix);
}
mDrawable.draw(canvas);
canvas.restoreToCount(saveCount);
}
|
| protected void | onMeasure(int widthMeasureSpec, int heightMeasureSpec)
resolveUri();
int w;
int h;
// Desired aspect ratio of the view's contents (not including padding)
float desiredAspect = 0.0f;
// We are allowed to change the view's width
boolean resizeWidth = false;
// We are allowed to change the view's height
boolean resizeHeight = false;
if (mDrawable == null) {
// If no drawable, its intrinsic size is 0.
mDrawableWidth = -1;
mDrawableHeight = -1;
w = h = 0;
} else {
w = mDrawableWidth;
h = mDrawableHeight;
if (w <= 0) w = 1;
if (h <= 0) h = 1;
// We are supposed to adjust view bounds to match the aspect
// ratio of our drawable. See if that is possible.
if (mAdjustViewBounds) {
int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec);
int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec);
resizeWidth = widthSpecMode != MeasureSpec.EXACTLY;
resizeHeight = heightSpecMode != MeasureSpec.EXACTLY;
desiredAspect = (float)w/(float)h;
}
}
int pleft = mPaddingLeft;
int pright = mPaddingRight;
int ptop = mPaddingTop;
int pbottom = mPaddingBottom;
int widthSize;
int heightSize;
if (resizeWidth || resizeHeight) {
/* If we get here, it means we want to resize to match the
drawables aspect ratio, and we have the freedom to change at
least one dimension.
*/
// Get the max possible width given our constraints
widthSize = resolveAdjustedSize(w + pleft + pright,
mMaxWidth, widthMeasureSpec);
// Get the max possible height given our constraints
heightSize = resolveAdjustedSize(h + ptop + pbottom,
mMaxHeight, heightMeasureSpec);
if (desiredAspect != 0.0f) {
// See what our actual aspect ratio is
float actualAspect = (float)(widthSize - pleft - pright) /
(heightSize - ptop - pbottom);
if (Math.abs(actualAspect - desiredAspect) > 0.0000001) {
boolean done = false;
// Try adjusting width to be proportional to height
if (resizeWidth) {
int newWidth = (int)(desiredAspect *
(heightSize - ptop - pbottom))
+ pleft + pright;
if (newWidth <= widthSize) {
widthSize = newWidth;
done = true;
}
}
// Try adjusting height to be proportional to width
if (!done && resizeHeight) {
int newHeight = (int)((widthSize - pleft - pright)
/ desiredAspect) + ptop + pbottom;
if (newHeight <= heightSize) {
heightSize = newHeight;
}
}
}
}
} else {
/* We are either don't want to preserve the drawables aspect ratio,
or we are not allowed to change view dimensions. Just measure in
the normal way.
*/
w += pleft + pright;
h += ptop + pbottom;
w = Math.max(w, getSuggestedMinimumWidth());
h = Math.max(h, getSuggestedMinimumHeight());
widthSize = resolveSize(w, widthMeasureSpec);
heightSize = resolveSize(h, heightMeasureSpec);
}
setMeasuredDimension(widthSize, heightSize);
|
| protected boolean | onSetAlpha(int alpha)
if (getBackground() == null) {
int scale = alpha + (alpha >> 7);
if (mViewAlphaScale != scale) {
mViewAlphaScale = scale;
applyColorMod();
}
return true;
}
return false;
|
| private void | resizeFromDrawable()
Drawable d = mDrawable;
if (d != null) {
int w = d.getIntrinsicWidth();
if (w < 0) w = mDrawableWidth;
int h = d.getIntrinsicHeight();
if (h < 0) h = mDrawableHeight;
if (w != mDrawableWidth || h != mDrawableHeight) {
mDrawableWidth = w;
mDrawableHeight = h;
requestLayout();
}
}
|
| private int | resolveAdjustedSize(int desiredSize, 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;
}
return result;
|
| private void | resolveUri()
if (mDrawable != null) {
return;
}
Resources rsrc = getResources();
if (rsrc == null) {
return;
}
Drawable d = null;
if (mResource != 0) {
try {
d = rsrc.getDrawable(mResource);
} catch (Exception e) {
Log.w("ImageView", "Unable to find resource: " + mResource, e);
// Don't try again.
mUri = null;
}
} else if (mUri != null) {
if ("content".equals(mUri.getScheme())) {
try {
d = Drawable.createFromStream(
mContext.getContentResolver().openInputStream(mUri),
null);
} catch (Exception e) {
Log.w("ImageView", "Unable to open content: " + mUri, e);
}
} else {
d = Drawable.createFromPath(mUri.toString());
}
if (d == null) {
System.out.println("resolveUri failed on bad bitmap uri: "
+ mUri);
// Don't try again.
mUri = null;
}
} else {
return;
}
updateDrawable(d);
|
| private static Matrix.ScaleToFit | scaleTypeToScaleToFit(android.widget.ImageView$ScaleType st)
// ScaleToFit enum to their corresponding Matrix.ScaleToFit values
return sS2FArray[st.nativeInt - 1];
|
| public void | setAdjustViewBounds(boolean adjustViewBounds)Set this to true if you want the ImageView to adjust its bounds
to preserve the aspect ratio of its drawable.
mAdjustViewBounds = adjustViewBounds;
if (adjustViewBounds) {
setScaleType(ScaleType.FIT_CENTER);
}
|
| public void | setAlpha(int alpha)
alpha &= 0xFF; // keep it legal
if (mAlpha != alpha) {
mAlpha = alpha;
applyColorMod();
invalidate();
}
|
| public final void | setColorFilter(int color, PorterDuff.Mode mode)Set a tinting option for the image.
setColorFilter(new PorterDuffColorFilter(color, mode));
|
| public void | setColorFilter(android.graphics.ColorFilter cf)Apply an arbitrary colorfilter to the image.
if (mColorFilter != cf) {
mColorFilter = cf;
applyColorMod();
invalidate();
}
|
| protected boolean | setFrame(int l, int t, int r, int b)
boolean changed = super.setFrame(l, t, r, b);
mHaveFrame = true;
configureBounds();
return changed;
|
| public void | setImageBitmap(android.graphics.Bitmap bm)Sets a Bitmap as the content of this ImageView.
// if this is used frequently, may handle bitmaps explicitly
// to reduce the intermediate drawable object
setImageDrawable(new BitmapDrawable(bm));
|
| public void | setImageDrawable(android.graphics.drawable.Drawable drawable)Sets a drawable as the content of this ImageView.
if (mDrawable != drawable) {
mResource = 0;
mUri = null;
updateDrawable(drawable);
requestLayout();
invalidate();
}
|
| public void | setImageLevel(int level)Sets the image level, when it is constructed from a
{@link android.graphics.drawable.LevelListDrawable}.
mLevel = level;
if (mDrawable != null) {
mDrawable.setLevel(level);
resizeFromDrawable();
}
|
| public void | setImageMatrix(android.graphics.Matrix matrix)
// collaps null and identity to just null
if (matrix != null && matrix.isIdentity()) {
matrix = null;
}
// don't invalidate unless we're actually changing our matrix
if (matrix == null && !mMatrix.isIdentity() ||
matrix != null && !mMatrix.equals(matrix)) {
mMatrix.set(matrix);
invalidate();
}
|
| public void | setImageResource(int resId)Sets a drawable as the content of this ImageView.
if (mUri != null || mResource != resId) {
updateDrawable(null);
mResource = resId;
mUri = null;
resolveUri();
requestLayout();
invalidate();
}
|
| public void | setImageState(int[] state, boolean merge)
mState = state;
mMergeState = merge;
if (mDrawable != null) {
refreshDrawableState();
resizeFromDrawable();
}
|
| public void | setImageURI(android.net.Uri uri)Sets the content of this ImageView to the specified Uri.
if (mResource != 0 ||
(mUri != uri &&
(uri == null || mUri == null || !uri.equals(mUri)))) {
updateDrawable(null);
mResource = 0;
mUri = uri;
resolveUri();
requestLayout();
invalidate();
}
|
| public void | setMaxHeight(int maxHeight)An optional argument to supply a maximum height for this view. Only valid if
{@link #setAdjustViewBounds} has been set to true. To set an image to be a maximum of 100 x
100 while preserving the original aspect ratio, do the following: 1) set adjustViewBounds to
true 2) set maxWidth and maxHeight to 100 3) set the height and width layout params to
WRAP_CONTENT.
Note that this view could be still smaller than 100 x 100 using this approach if the original
image is small. To set an image to a fixed size, specify that size in the layout params and
then use {@link #setScaleType} to determine how to fit the image within the bounds.
mMaxHeight = maxHeight;
|
| public void | setMaxWidth(int maxWidth)An optional argument to supply a maximum width for this view. Only valid if
{@link #setAdjustViewBounds} has been set to true. To set an image to be a maximum of 100 x
100 while preserving the original aspect ratio, do the following: 1) set adjustViewBounds to
true 2) set maxWidth and maxHeight to 100 3) set the height and width layout params to
WRAP_CONTENT.
Note that this view could be still smaller than 100 x 100 using this approach if the original
image is small. To set an image to a fixed size, specify that size in the layout params and
then use {@link #setScaleType} to determine how to fit the image within the bounds.
mMaxWidth = maxWidth;
|
| public void | setScaleType(android.widget.ImageView$ScaleType scaleType)Controls how the image should be resized or moved to match the size
of this ImageView.
if (scaleType == null) {
throw new NullPointerException();
}
if (mScaleType != scaleType) {
mScaleType = scaleType;
setWillNotCacheDrawing(mScaleType == ScaleType.CENTER);
requestLayout();
invalidate();
}
|
| public void | setSelected(boolean selected)
super.setSelected(selected);
resizeFromDrawable();
|
| private void | updateDrawable(android.graphics.drawable.Drawable d)
if (mDrawable != null) {
mDrawable.setCallback(null);
unscheduleDrawable(mDrawable);
}
mDrawable = d;
if (d != null) {
d.setCallback(this);
if (d.isStateful()) {
d.setState(getDrawableState());
}
d.setLevel(mLevel);
mDrawableWidth = d.getIntrinsicWidth();
mDrawableHeight = d.getIntrinsicHeight();
applyColorMod();
configureBounds();
}
|
| protected boolean | verifyDrawable(android.graphics.drawable.Drawable dr)
return mDrawable == dr || super.verifyDrawable(dr);
|
