public void buildCache(int w, int h, int density, boolean checkSizeEquals) {
boolean reuse = checkSizeEquals ? (w == width && h == height) : (w <= width && h <= height);
if (reuse && bitmap != null && !bitmap.isRecycled()) {
// canvas.drawColor(Color.TRANSPARENT);
canvas.setBitmap(null);
bitmap.eraseColor(Color.TRANSPARENT);
canvas.setBitmap(bitmap);
recycleBitmapArray();
return;
}
if (bitmap != null) {
recycle();
}
width = w;
height = h;
bitmap = NativeBitmapFactory.createBitmap(w, h, Bitmap.Config.ARGB_8888);
if (density > 0) {
mDensity = density;
bitmap.setDensity(density);
}
if (canvas == null) {
canvas = new Canvas(bitmap);
canvas.setDensity(density);
} else canvas.setBitmap(bitmap);
}
@SuppressLint("NewApi")
public void splitWith(
int dispWidth, int dispHeight, int maximumCacheWidth, int maximumCacheHeight) {
recycleBitmapArray();
if (width <= 0 || height <= 0 || bitmap == null || bitmap.isRecycled()) {
return;
}
if (width <= maximumCacheWidth && height <= maximumCacheHeight) {
return;
}
maximumCacheWidth = Math.min(maximumCacheWidth, dispWidth);
maximumCacheHeight = Math.min(maximumCacheHeight, dispHeight);
int xCount = width / maximumCacheWidth + (width % maximumCacheWidth == 0 ? 0 : 1);
int yCount = height / maximumCacheHeight + (height % maximumCacheHeight == 0 ? 0 : 1);
int averageWidth = width / xCount;
int averageHeight = height / yCount;
final Bitmap[][] bmpArray = new Bitmap[yCount][xCount];
if (canvas == null) {
canvas = new Canvas();
if (mDensity > 0) {
canvas.setDensity(mDensity);
}
}
Rect rectSrc = new Rect();
Rect rectDst = new Rect();
for (int yIndex = 0; yIndex < yCount; yIndex++) {
for (int xIndex = 0; xIndex < xCount; xIndex++) {
Bitmap bmp =
bmpArray[yIndex][xIndex] =
NativeBitmapFactory.createBitmap(
averageWidth, averageHeight, Bitmap.Config.ARGB_8888);
if (mDensity > 0) {
bmp.setDensity(mDensity);
}
canvas.setBitmap(bmp);
int left = xIndex * averageWidth, top = yIndex * averageHeight;
rectSrc.set(left, top, left + averageWidth, top + averageHeight);
rectDst.set(0, 0, bmp.getWidth(), bmp.getHeight());
canvas.drawBitmap(bitmap, rectSrc, rectDst, null);
}
}
canvas.setBitmap(bitmap);
bitmapArray = bmpArray;
}