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package org.libreoffice;
import android.graphics.Bitmap;
import android.util.Log;
import org.libreoffice.kit.Document;
import org.libreoffice.kit.LibreOfficeKit;
import org.libreoffice.kit.Office;
import org.mozilla.gecko.gfx.BufferedCairoImage;
import org.mozilla.gecko.gfx.CairoImage;
import org.mozilla.gecko.gfx.IntSize;
import org.mozilla.gecko.gfx.LayerController;
import java.nio.ByteBuffer;
public class LOKitTileProvider implements TileProvider {
private static final String LOGTAG = LOKitTileProvider.class.getSimpleName();
private static int TILE_SIZE = 256;
private Office mOffice;
private Document mDocument;
private final LayerController mLayerController;
private final float mTileWidth;
private final float mTileHeight;
private final String mInputFile;
private boolean mIsReady = false;
private float mDPI;
private float mWidthTwip;
private float mHeightTwip;
public LOKitTileProvider(LayerController layerController, String input) {
mLayerController = layerController;
mDPI = (float) LOKitShell.getDpi();
mTileWidth = pixelToTwip(TILE_SIZE, mDPI);
mTileHeight = pixelToTwip(TILE_SIZE, mDPI);
LibreOfficeKit.putenv("SAL_LOG=+WARN+INFO-INFO.legacy.osl-INFO.i18nlangtag");
LibreOfficeKit.init(LibreOfficeMainActivity.mAppContext);
mOffice = new Office(LibreOfficeKit.getLibreOfficeKitHandle());
mInputFile = input;
mDocument = mOffice.documentLoad(input);
if (mDocument == null) {
Log.i(LOGTAG, "====> mOffice.documentLoad() returned null, trying to restart 'Office' and loading again");
mOffice.destroy();
Log.i(LOGTAG, "====> mOffice.destroy() done");
long handle = LibreOfficeKit.getLibreOfficeKitHandle();
Log.i(LOGTAG, "====> getLibreOfficeKitHandle() = " + handle);
mOffice = new Office(handle);
Log.i(LOGTAG, "====> new Office created");
mDocument = mOffice.documentLoad(input);
}
Log.i(LOGTAG, "====> mDocument = " + mDocument);
if (checkDocument()) {
int parts = mDocument.getParts();
Log.i(LOGTAG, "Document parts: " + parts);
LibreOfficeMainActivity.mAppContext.getDocumentPartView().clear();
if (parts > 1) {
for (int i = 0; i < parts; i++) {
String partName = mDocument.getPartName(i);
if (partName.isEmpty()) {
partName = getGenericPartName(i);
}
Log.i(LOGTAG, "Document part " + i + " name:'" + partName + "'");
mDocument.setPart(i);
final DocumentPartView partView = new DocumentPartView(i, partName, thumbnail(128));
LibreOfficeMainActivity.mAppContext.getDocumentPartView().add(partView);
}
}
mDocument.setPart(0);
LOKitShell.getMainHandler().post(new Runnable() {
@Override
public void run() {
LibreOfficeMainActivity.mAppContext.getDocumentPartViewListAdpater().notifyDataSetChanged();
}
});
mIsReady = true;
}
}
private String getGenericPartName(int i) {
if (mDocument == null) {
return "";
}
switch (mDocument.getDocumentType()) {
case Document.DOCTYPE_DRAWING:
case Document.DOCTYPE_TEXT:
return "Page " + (i + 1);
case Document.DOCTYPE_SPREADSHEET:
return "Sheet " + (i + 1);
case Document.DOCTYPE_PRESENTATION:
return "Slide " + (i + 1);
case Document.DOCTYPE_OTHER:
default:
return "Part " + (i + 1);
}
}
private float twipToPixel(float input, float dpi) {
return input / 1440.0f * dpi;
}
private float pixelToTwip(float input, float dpi) {
return (input / dpi) * 1440.0f;
}
private boolean checkDocument() {
if (mDocument == null || !mOffice.getError().isEmpty()) {
Log.e(LOGTAG, "Error at loading: " + mOffice.getError());
return false;
}
mWidthTwip = mDocument.getDocumentWidth();
mHeightTwip = mDocument.getDocumentHeight();
if (mWidthTwip == 0 || mHeightTwip == 0) {
Log.e(LOGTAG, "Document size zero - last error: " + mOffice.getError());
LOKitShell.getMainHandler().post(new Runnable() {
@Override
public void run() {
LibreOfficeMainActivity.mAppContext.showAlertDialog("Document has no size!");
}
});
return false;
} else {
Log.i(LOGTAG, "Document size: " + mDocument.getDocumentWidth() + " x " + mDocument.getDocumentHeight());
}
return true;
}
@Override
public int getPageWidth() {
return (int) twipToPixel(mWidthTwip, mDPI);
}
@Override
public int getPageHeight() {
return (int) twipToPixel(mHeightTwip, mDPI);
}
@Override
public boolean isReady() {
return mIsReady;
}
@Override
public CairoImage createTile(float x, float y, IntSize tileSize, float zoom) {
ByteBuffer buffer = ByteBuffer.allocateDirect(tileSize.width * tileSize.height * 4);
Bitmap bitmap = Bitmap.createBitmap(tileSize.width, tileSize.height, Bitmap.Config.ARGB_8888);
if (mDocument != null) {
float twipX = pixelToTwip(x, mDPI) / zoom;
float twipY = pixelToTwip(y, mDPI) / zoom;
float twipWidth = mTileWidth / zoom;
float twipHeight = mTileHeight / zoom;
long start = System.currentTimeMillis();
Log.i(LOGTAG, "paintTile TOP @ " + start + "(" + tileSize.width + " " + tileSize.height + " " + (int) twipX + " " + (int) twipY + " " + (int) twipWidth + " " + (int) twipHeight + ")");
mDocument.paintTile(buffer, tileSize.width, tileSize.height, (int) twipX, (int) twipY, (int) twipWidth, (int) twipHeight);
long stop = System.currentTimeMillis();
Log.i(LOGTAG, "paintTile TAIL @ " + stop + " - elapsed: " + (stop - start) + " ");
} else {
Log.e(LOGTAG, "Document is null!!");
}
bitmap.copyPixelsFromBuffer(buffer);
CairoImage image = new BufferedCairoImage(bitmap);
return image;
}
@Override
public Bitmap thumbnail(int size) {
int widthPixel = getPageWidth();
int heightPixel = getPageHeight();
if (widthPixel > heightPixel) {
double ratio = heightPixel / (double) widthPixel;
widthPixel = size;
heightPixel = (int) (widthPixel * ratio);
} else {
double ratio = widthPixel / (double) heightPixel;
heightPixel = size;
widthPixel = (int) (heightPixel * ratio);
}
Log.w(LOGTAG, "Thumbnail size: " + getPageWidth() + " " + getPageHeight() + " " + widthPixel + " " + heightPixel);
ByteBuffer buffer = ByteBuffer.allocateDirect(widthPixel * heightPixel * 4);
mDocument.paintTile(buffer, widthPixel, heightPixel, 0, 0, (int) mWidthTwip, (int) mHeightTwip);
Bitmap bitmap = Bitmap.createBitmap(widthPixel, heightPixel, Bitmap.Config.ARGB_8888);
bitmap.copyPixelsFromBuffer(buffer);
if (bitmap == null) {
Log.w(LOGTAG, "Thumbnail not created!");
}
return bitmap;
}
@Override
public void close() {
Log.i(LOGTAG, "Document destroyed: " + mInputFile);
if (mDocument != null) {
mDocument.destroy();
mDocument = null;
}
}
@Override
protected void finalize() throws Throwable {
close();
super.finalize();
}
@Override
public void changePart(int partIndex) {
mDocument.setPart(partIndex);
}
}
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