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Diffstat (limited to 'android/source/src/java/org/libreoffice/LOKitThread.java')
| -rw-r--r-- | android/source/src/java/org/libreoffice/LOKitThread.java | 447 |
1 files changed, 447 insertions, 0 deletions
diff --git a/android/source/src/java/org/libreoffice/LOKitThread.java b/android/source/src/java/org/libreoffice/LOKitThread.java new file mode 100644 index 000000000..c29f98461 --- /dev/null +++ b/android/source/src/java/org/libreoffice/LOKitThread.java @@ -0,0 +1,447 @@ +package org.libreoffice; + +import android.graphics.Bitmap; +import android.graphics.PointF; +import android.graphics.RectF; +import android.util.Log; +import android.view.KeyEvent; + +import org.libreoffice.canvas.SelectionHandle; +import org.mozilla.gecko.ZoomConstraints; +import org.mozilla.gecko.gfx.CairoImage; +import org.mozilla.gecko.gfx.ComposedTileLayer; +import org.mozilla.gecko.gfx.GeckoLayerClient; +import org.mozilla.gecko.gfx.ImmutableViewportMetrics; +import org.mozilla.gecko.gfx.SubTile; + +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.LinkedBlockingQueue; + +/* + * Thread that communicates with LibreOffice through LibreOfficeKit JNI interface. The thread + * consumes events from other threads (mainly the UI thread) and acts accordingly. + */ +class LOKitThread extends Thread { + private static final String LOGTAG = LOKitThread.class.getSimpleName(); + + private final LinkedBlockingQueue<LOEvent> mEventQueue = new LinkedBlockingQueue<LOEvent>(); + + private TileProvider mTileProvider; + private InvalidationHandler mInvalidationHandler; + private ImmutableViewportMetrics mViewportMetrics; + private GeckoLayerClient mLayerClient; + private final LibreOfficeMainActivity mContext; + + LOKitThread(LibreOfficeMainActivity context) { + mContext = context; + mInvalidationHandler = null; + TileProviderFactory.initialize(); + } + + /** + * Starting point of the thread. Processes events that gather in the queue. + */ + @Override + public void run() { + while (true) { + LOEvent event; + try { + event = mEventQueue.take(); + processEvent(event); + } catch (InterruptedException exception) { + throw new RuntimeException(exception); + } + } + } + + /** + * Viewport changed, Recheck if tiles need to be added / removed. + */ + private void tileReevaluationRequest(ComposedTileLayer composedTileLayer) { + if (mTileProvider == null) { + return; + } + List<SubTile> tiles = new ArrayList<SubTile>(); + + mLayerClient.beginDrawing(); + composedTileLayer.addNewTiles(tiles); + mLayerClient.endDrawing(); + + for (SubTile tile : tiles) { + TileIdentifier tileId = tile.id; + CairoImage image = mTileProvider.createTile(tileId.x, tileId.y, tileId.size, tileId.zoom); + mLayerClient.beginDrawing(); + if (image != null) { + tile.setImage(image); + } + mLayerClient.endDrawing(); + mLayerClient.forceRender(); + } + + mLayerClient.beginDrawing(); + composedTileLayer.markTiles(); + composedTileLayer.clearMarkedTiles(); + mLayerClient.endDrawing(); + mLayerClient.forceRender(); + } + + /** + * Invalidate tiles that intersect the input rect. + */ + private void tileInvalidation(RectF rect) { + if (mLayerClient == null || mTileProvider == null) { + return; + } + + mLayerClient.beginDrawing(); + + List<SubTile> tiles = new ArrayList<SubTile>(); + mLayerClient.invalidateTiles(tiles, rect); + + for (SubTile tile : tiles) { + CairoImage image = mTileProvider.createTile(tile.id.x, tile.id.y, tile.id.size, tile.id.zoom); + tile.setImage(image); + tile.invalidate(); + } + mLayerClient.endDrawing(); + mLayerClient.forceRender(); + } + + /** + * Handle the geometry change + draw. + */ + private void redraw(boolean resetZoomAndPosition) { + if (mLayerClient == null || mTileProvider == null) { + // called too early... + return; + } + + mLayerClient.setPageRect(0, 0, mTileProvider.getPageWidth(), mTileProvider.getPageHeight()); + mViewportMetrics = mLayerClient.getViewportMetrics(); + mLayerClient.setViewportMetrics(mViewportMetrics); + + if (resetZoomAndPosition) { + zoomAndRepositionTheDocument(); + } + + mLayerClient.forceRedraw(); + mLayerClient.forceRender(); + } + + /** + * Reposition the view (zoom and position) when the document is firstly shown. This is document type dependent. + */ + private void zoomAndRepositionTheDocument() { + if (mTileProvider.isSpreadsheet()) { + // Don't do anything for spreadsheets - show at 100% + } else if (mTileProvider.isTextDocument()) { + // Always zoom text document to the beginning of the document and centered by width + float centerY = mViewportMetrics.getCssViewport().centerY(); + mLayerClient.zoomTo(new RectF(0, centerY, mTileProvider.getPageWidth(), centerY)); + } else { + // Other documents - always show the whole document on the screen, + // regardless of document shape and orientation. + if (mViewportMetrics.getViewport().width() < mViewportMetrics.getViewport().height()) { + mLayerClient.zoomTo(mTileProvider.getPageWidth(), 0); + } else { + mLayerClient.zoomTo(0, mTileProvider.getPageHeight()); + } + } + } + + /** + * Invalidate everything + handle the geometry change + */ + private void refresh(boolean resetZoomAndPosition) { + mLayerClient.clearAndResetlayers(); + redraw(resetZoomAndPosition); + updatePartPageRectangles(); + if (mTileProvider != null && mTileProvider.isSpreadsheet()) { + updateCalcHeaders(); + } + } + + /** + * Update part page rectangles which hold positions of each document page. + * Result is stored in DocumentOverlayView class. + */ + private void updatePartPageRectangles() { + if (mTileProvider == null) { + Log.d(LOGTAG, "mTileProvider==null when calling updatePartPageRectangles"); + return; + } + String partPageRectString = ((LOKitTileProvider) mTileProvider).getPartPageRectangles(); + List<RectF> partPageRectangles = mInvalidationHandler.convertPayloadToRectangles(partPageRectString); + mContext.getDocumentOverlay().setPartPageRectangles(partPageRectangles); + } + + private void updatePageSize(int pageWidth, int pageHeight){ + mTileProvider.setDocumentSize(pageWidth, pageHeight); + redraw(true); + } + + private void updateZoomConstraints() { + if (mTileProvider == null) return; + mLayerClient = mContext.getLayerClient(); + // Set min zoom to the page width so that you cannot zoom below page width + final float minZoom = mLayerClient.getViewportMetrics().getWidth()/mTileProvider.getPageWidth(); + mLayerClient.setZoomConstraints(new ZoomConstraints(true, 1f, minZoom, 0f)); + } + + /** + * Change part of the document. + */ + private void changePart(int partIndex) { + LOKitShell.showProgressSpinner(mContext); + mTileProvider.changePart(partIndex); + mViewportMetrics = mLayerClient.getViewportMetrics(); + // mLayerClient.setViewportMetrics(mViewportMetrics.scaleTo(0.9f, new PointF())); + refresh(true); + LOKitShell.hideProgressSpinner(mContext); + } + + /** + * Handle load document event. + * @param filePath - filePath to where the document is located + * @return Whether the document has been loaded successfully. + */ + private boolean loadDocument(String filePath) { + mLayerClient = mContext.getLayerClient(); + + mInvalidationHandler = new InvalidationHandler(mContext); + mTileProvider = TileProviderFactory.create(mContext, mInvalidationHandler, filePath); + + if (mTileProvider.isReady()) { + LOKitShell.showProgressSpinner(mContext); + updateZoomConstraints(); + refresh(true); + LOKitShell.hideProgressSpinner(mContext); + return true; + } else { + closeDocument(); + return false; + } + } + + /** + * Handle load new document event. + * @param filePath - filePath to where new document is to be created + * @param fileType - fileType what type of new document is to be loaded + */ + private void loadNewDocument(String filePath, String fileType) { + boolean ok = loadDocument(fileType); + if (ok) { + mTileProvider.saveDocumentAs(filePath, true); + } + } + + /** + * Save the currently loaded document. + */ + private void saveDocumentAs(String filePath, String fileType, boolean bTakeOwnership) { + if (mTileProvider == null) { + Log.e(LOGTAG, "Error in saving, Tile Provider instance is null"); + } else { + mTileProvider.saveDocumentAs(filePath, fileType, bTakeOwnership); + } + } + + /** + * Close the currently loaded document. + */ + private void closeDocument() { + if (mTileProvider != null) { + mTileProvider.close(); + mTileProvider = null; + } + } + + /** + * Process the input event. + */ + private void processEvent(LOEvent event) { + switch (event.mType) { + case LOEvent.LOAD: + loadDocument(event.filePath); + break; + case LOEvent.LOAD_NEW: + loadNewDocument(event.filePath, event.fileType); + break; + case LOEvent.SAVE_AS: + saveDocumentAs(event.filePath, event.fileType, true); + break; + case LOEvent.SAVE_COPY_AS: + saveDocumentAs(event.filePath, event.fileType, false); + break; + case LOEvent.CLOSE: + closeDocument(); + break; + case LOEvent.SIZE_CHANGED: + redraw(false); + break; + case LOEvent.CHANGE_PART: + changePart(event.mPartIndex); + break; + case LOEvent.TILE_INVALIDATION: + tileInvalidation(event.mInvalidationRect); + break; + case LOEvent.THUMBNAIL: + createThumbnail(event.mTask); + break; + case LOEvent.TOUCH: + touch(event.mTouchType, event.mDocumentCoordinate); + break; + case LOEvent.KEY_EVENT: + keyEvent(event.mKeyEvent); + break; + case LOEvent.TILE_REEVALUATION_REQUEST: + tileReevaluationRequest(event.mComposedTileLayer); + break; + case LOEvent.CHANGE_HANDLE_POSITION: + changeHandlePosition(event.mHandleType, event.mDocumentCoordinate); + break; + case LOEvent.SWIPE_LEFT: + if (null != mTileProvider) onSwipeLeft(); + break; + case LOEvent.SWIPE_RIGHT: + if (null != mTileProvider) onSwipeRight(); + break; + case LOEvent.NAVIGATION_CLICK: + mInvalidationHandler.changeStateTo(InvalidationHandler.OverlayState.NONE); + break; + case LOEvent.UNO_COMMAND: + if (null == mTileProvider) + Log.e(LOGTAG, "no mTileProvider when trying to process "+event.mValue+" from UNO_COMMAND "+event.mString); + else + mTileProvider.postUnoCommand(event.mString, event.mValue); + break; + case LOEvent.UPDATE_PART_PAGE_RECT: + updatePartPageRectangles(); + break; + case LOEvent.UPDATE_ZOOM_CONSTRAINTS: + updateZoomConstraints(); + break; + case LOEvent.UPDATE_CALC_HEADERS: + updateCalcHeaders(); + break; + case LOEvent.UNO_COMMAND_NOTIFY: + if (null == mTileProvider) + Log.e(LOGTAG, "no mTileProvider when trying to process "+event.mValue+" from UNO_COMMAND "+event.mString); + else + mTileProvider.postUnoCommand(event.mString, event.mValue, event.mNotify); + break; + case LOEvent.REFRESH: + refresh(false); + break; + case LOEvent.PAGE_SIZE_CHANGED: + updatePageSize(event.mPageWidth, event.mPageHeight); + break; + } + } + + private void updateCalcHeaders() { + if (null == mTileProvider) return; + LOKitTileProvider tileProvider = (LOKitTileProvider)mTileProvider; + String values = tileProvider.getCalcHeaders(); + mContext.getCalcHeadersController().setHeaders(values); + } + + /** + * Request a change of the handle position. + */ + private void changeHandlePosition(SelectionHandle.HandleType handleType, PointF documentCoordinate) { + switch (handleType) { + case MIDDLE: + mTileProvider.setTextSelectionReset(documentCoordinate); + break; + case START: + mTileProvider.setTextSelectionStart(documentCoordinate); + break; + case END: + mTileProvider.setTextSelectionEnd(documentCoordinate); + break; + } + } + + /** + * Processes key events. + */ + private void keyEvent(KeyEvent keyEvent) { + if (!LOKitShell.isEditingEnabled()) { + return; + } + if (mTileProvider == null) { + return; + } + mInvalidationHandler.keyEvent(); + mTileProvider.sendKeyEvent(keyEvent); + } + + /** + * Process swipe left event. + */ + private void onSwipeLeft() { + mTileProvider.onSwipeLeft(); + } + + /** + * Process swipe right event. + */ + private void onSwipeRight() { + mTileProvider.onSwipeRight(); + } + + /** + * Processes touch events. + */ + private void touch(String touchType, PointF documentCoordinate) { + if (mTileProvider == null || mViewportMetrics == null) { + return; + } + + // to handle hyperlinks, enable single tap even in the Viewer + boolean editing = LOKitShell.isEditingEnabled(); + float zoomFactor = mViewportMetrics.getZoomFactor(); + + if (touchType.equals("LongPress")) { + mInvalidationHandler.changeStateTo(InvalidationHandler.OverlayState.TRANSITION); + mTileProvider.mouseButtonDown(documentCoordinate, 1, zoomFactor); + mTileProvider.mouseButtonUp(documentCoordinate, 1, zoomFactor); + mTileProvider.mouseButtonDown(documentCoordinate, 2, zoomFactor); + mTileProvider.mouseButtonUp(documentCoordinate, 2, zoomFactor); + } else if (touchType.equals("SingleTap")) { + mInvalidationHandler.changeStateTo(InvalidationHandler.OverlayState.TRANSITION); + mTileProvider.mouseButtonDown(documentCoordinate, 1, zoomFactor); + mTileProvider.mouseButtonUp(documentCoordinate, 1, zoomFactor); + } else if (touchType.equals("GraphicSelectionStart") && editing) { + mTileProvider.setGraphicSelectionStart(documentCoordinate); + } else if (touchType.equals("GraphicSelectionEnd") && editing) { + mTileProvider.setGraphicSelectionEnd(documentCoordinate); + } + } + + /** + * Create thumbnail for the requested document task. + */ + private void createThumbnail(final ThumbnailCreator.ThumbnailCreationTask task) { + final Bitmap bitmap = task.getThumbnail(mTileProvider); + task.applyBitmap(bitmap); + } + + /** + * Queue an event. + */ + public void queueEvent(LOEvent event) { + mEventQueue.add(event); + } + + /** + * Clear all events in the queue (used when document is closed). + */ + public void clearQueue() { + mEventQueue.clear(); + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |