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Diffstat (limited to 'eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/gle2/RenderPreviewManager.java')
| -rw-r--r-- | eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/gle2/RenderPreviewManager.java | 1696 |
1 files changed, 1696 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/gle2/RenderPreviewManager.java b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/gle2/RenderPreviewManager.java new file mode 100644 index 000000000..98dde86e0 --- /dev/null +++ b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/gle2/RenderPreviewManager.java @@ -0,0 +1,1696 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * Licensed under the Eclipse Public License, Version 1.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.eclipse.org/org/documents/epl-v10.php + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.ide.eclipse.adt.internal.editors.layout.gle2; + +import static com.android.ide.eclipse.adt.internal.editors.layout.configuration.Configuration.CFG_DEVICE; +import static com.android.ide.eclipse.adt.internal.editors.layout.configuration.Configuration.CFG_DEVICE_STATE; +import static com.android.ide.eclipse.adt.internal.editors.layout.configuration.Configuration.MASK_ALL; +import static com.android.ide.eclipse.adt.internal.editors.layout.gle2.ImageUtils.SHADOW_SIZE; +import static com.android.ide.eclipse.adt.internal.editors.layout.gle2.ImageUtils.SMALL_SHADOW_SIZE; +import static com.android.ide.eclipse.adt.internal.editors.layout.gle2.RenderPreview.LARGE_SHADOWS; +import static com.android.ide.eclipse.adt.internal.editors.layout.gle2.RenderPreviewMode.CUSTOM; +import static com.android.ide.eclipse.adt.internal.editors.layout.gle2.RenderPreviewMode.NONE; +import static com.android.ide.eclipse.adt.internal.editors.layout.gle2.RenderPreviewMode.SCREENS; + +import com.android.annotations.NonNull; +import com.android.annotations.Nullable; +import com.android.ide.common.api.Rect; +import com.android.ide.common.rendering.api.Capability; +import com.android.ide.common.resources.configuration.DensityQualifier; +import com.android.ide.common.resources.configuration.DeviceConfigHelper; +import com.android.ide.common.resources.configuration.FolderConfiguration; +import com.android.ide.common.resources.configuration.LocaleQualifier; +import com.android.ide.common.resources.configuration.ScreenSizeQualifier; +import com.android.ide.eclipse.adt.AdtPlugin; +import com.android.ide.eclipse.adt.AdtUtils; +import com.android.ide.eclipse.adt.internal.editors.IconFactory; +import com.android.ide.eclipse.adt.internal.editors.common.CommonXmlEditor; +import com.android.ide.eclipse.adt.internal.editors.layout.configuration.Configuration; +import com.android.ide.eclipse.adt.internal.editors.layout.configuration.ConfigurationChooser; +import com.android.ide.eclipse.adt.internal.editors.layout.configuration.ConfigurationClient; +import com.android.ide.eclipse.adt.internal.editors.layout.configuration.ConfigurationDescription; +import com.android.ide.eclipse.adt.internal.editors.layout.configuration.Locale; +import com.android.ide.eclipse.adt.internal.editors.layout.configuration.NestedConfiguration; +import com.android.ide.eclipse.adt.internal.editors.layout.configuration.VaryingConfiguration; +import com.android.ide.eclipse.adt.internal.editors.layout.gle2.IncludeFinder.Reference; +import com.android.ide.eclipse.adt.internal.preferences.AdtPrefs; +import com.android.resources.Density; +import com.android.resources.ScreenSize; +import com.android.sdklib.devices.Device; +import com.android.sdklib.devices.Screen; +import com.android.sdklib.devices.State; +import com.google.common.collect.Lists; + +import org.eclipse.core.resources.IFile; +import org.eclipse.core.resources.IProject; +import org.eclipse.jface.dialogs.InputDialog; +import org.eclipse.jface.window.Window; +import org.eclipse.swt.SWT; +import org.eclipse.swt.events.SelectionEvent; +import org.eclipse.swt.events.SelectionListener; +import org.eclipse.swt.graphics.GC; +import org.eclipse.swt.graphics.Image; +import org.eclipse.swt.graphics.Rectangle; +import org.eclipse.swt.widgets.ScrollBar; +import org.eclipse.ui.IWorkbenchPartSite; +import org.eclipse.ui.PartInitException; +import org.eclipse.ui.ide.IDE; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.Comparator; +import java.util.HashSet; +import java.util.Iterator; +import java.util.List; +import java.util.Set; + +/** + * Manager for the configuration previews, which handles layout computations, + * managing the image buffer cache, etc + */ +public class RenderPreviewManager { + private static double sScale = 1.0; + private static final int RENDER_DELAY = 150; + private static final int PREVIEW_VGAP = 18; + private static final int PREVIEW_HGAP = 12; + private static final int MAX_WIDTH = 200; + private static final int MAX_HEIGHT = MAX_WIDTH; + private static final int ZOOM_ICON_WIDTH = 16; + private static final int ZOOM_ICON_HEIGHT = 16; + private @Nullable List<RenderPreview> mPreviews; + private @Nullable RenderPreviewList mManualList; + private final @NonNull LayoutCanvas mCanvas; + private final @NonNull CanvasTransform mVScale; + private final @NonNull CanvasTransform mHScale; + private int mPrevCanvasWidth; + private int mPrevCanvasHeight; + private int mPrevImageWidth; + private int mPrevImageHeight; + private @NonNull RenderPreviewMode mMode = NONE; + private @Nullable RenderPreview mActivePreview; + private @Nullable ScrollBarListener mListener; + private int mLayoutHeight; + /** Last seen state revision in this {@link RenderPreviewManager}. If less + * than {@link #sRevision}, the previews need to be updated on next exposure */ + private static int mRevision; + /** Current global revision count */ + private static int sRevision; + private boolean mNeedLayout; + private boolean mNeedRender; + private boolean mNeedZoom; + private SwapAnimation mAnimation; + + /** + * Creates a {@link RenderPreviewManager} associated with the given canvas + * + * @param canvas the canvas to manage previews for + */ + public RenderPreviewManager(@NonNull LayoutCanvas canvas) { + mCanvas = canvas; + mHScale = canvas.getHorizontalTransform(); + mVScale = canvas.getVerticalTransform(); + } + + /** + * Revise the global state revision counter. This will cause all layout + * preview managers to refresh themselves to the latest revision when they + * are next exposed. + */ + public static void bumpRevision() { + sRevision++; + } + + /** + * Returns the associated chooser + * + * @return the associated chooser + */ + @NonNull + ConfigurationChooser getChooser() { + GraphicalEditorPart editor = mCanvas.getEditorDelegate().getGraphicalEditor(); + return editor.getConfigurationChooser(); + } + + /** + * Returns the associated canvas + * + * @return the canvas + */ + @NonNull + public LayoutCanvas getCanvas() { + return mCanvas; + } + + /** Zooms in (grows all previews) */ + public void zoomIn() { + sScale = sScale * (1 / 0.9); + if (Math.abs(sScale-1.0) < 0.0001) { + sScale = 1.0; + } + + updatedZoom(); + } + + /** Zooms out (shrinks all previews) */ + public void zoomOut() { + sScale = sScale * (0.9 / 1); + if (Math.abs(sScale-1.0) < 0.0001) { + sScale = 1.0; + } + updatedZoom(); + } + + /** Zooms to 100 (resets zoom) */ + public void zoomReset() { + sScale = 1.0; + updatedZoom(); + mNeedZoom = mNeedLayout = true; + mCanvas.redraw(); + } + + private void updatedZoom() { + if (hasPreviews()) { + for (RenderPreview preview : mPreviews) { + preview.disposeThumbnail(); + } + RenderPreview preview = mCanvas.getPreview(); + if (preview != null) { + preview.disposeThumbnail(); + } + } + + mNeedLayout = mNeedRender = true; + mCanvas.redraw(); + } + + static int getMaxWidth() { + return (int) (sScale * MAX_WIDTH); + } + + static int getMaxHeight() { + return (int) (sScale * MAX_HEIGHT); + } + + static double getScale() { + return sScale; + } + + /** + * Returns whether there are any manual preview items (provided the current + * mode is manual previews + * + * @return true if there are items in the manual preview list + */ + public boolean hasManualPreviews() { + assert mMode == CUSTOM; + return mManualList != null && !mManualList.isEmpty(); + } + + /** Delete all the previews */ + public void deleteManualPreviews() { + disposePreviews(); + selectMode(NONE); + mCanvas.setFitScale(true /* onlyZoomOut */, true /*allowZoomIn*/); + + if (mManualList != null) { + mManualList.delete(); + } + } + + /** Dispose all the previews */ + public void disposePreviews() { + if (mPreviews != null) { + List<RenderPreview> old = mPreviews; + mPreviews = null; + for (RenderPreview preview : old) { + preview.dispose(); + } + } + } + + /** + * Deletes the given preview + * + * @param preview the preview to be deleted + */ + public void deletePreview(RenderPreview preview) { + mPreviews.remove(preview); + preview.dispose(); + layout(true); + mCanvas.redraw(); + + if (mManualList != null) { + mManualList.remove(preview); + saveList(); + } + } + + /** + * Compute the total width required for the previews, including internal padding + * + * @return total width in pixels + */ + public int computePreviewWidth() { + int maxPreviewWidth = 0; + if (hasPreviews()) { + for (RenderPreview preview : mPreviews) { + maxPreviewWidth = Math.max(maxPreviewWidth, preview.getWidth()); + } + + if (maxPreviewWidth > 0) { + maxPreviewWidth += 2 * PREVIEW_HGAP; // 2x for left and right side + maxPreviewWidth += LARGE_SHADOWS ? SHADOW_SIZE : SMALL_SHADOW_SIZE; + } + + return maxPreviewWidth; + } + + return 0; + } + + /** + * Layout Algorithm. This sets the {@link RenderPreview#getX()} and + * {@link RenderPreview#getY()} coordinates of all the previews. It also + * marks previews as visible or invisible via + * {@link RenderPreview#setVisible(boolean)} according to their position and + * the current visible view port in the layout canvas. Finally, it also sets + * the {@code mLayoutHeight} field, such that the scrollbars can compute the + * right scrolled area, and that scrolling can cause render refreshes on + * views that are made visible. + * <p> + * This is not a traditional bin packing problem, because the objects to be + * packaged do not have a fixed size; we can scale them up and down in order + * to provide an "optimal" size. + * <p> + * See http://en.wikipedia.org/wiki/Packing_problem See + * http://en.wikipedia.org/wiki/Bin_packing_problem + */ + void layout(boolean refresh) { + mNeedLayout = false; + + if (mPreviews == null || mPreviews.isEmpty()) { + return; + } + + int scaledImageWidth = mHScale.getScaledImgSize(); + int scaledImageHeight = mVScale.getScaledImgSize(); + Rectangle clientArea = mCanvas.getClientArea(); + + if (!refresh && + (scaledImageWidth == mPrevImageWidth + && scaledImageHeight == mPrevImageHeight + && clientArea.width == mPrevCanvasWidth + && clientArea.height == mPrevCanvasHeight)) { + // No change + return; + } + + mPrevImageWidth = scaledImageWidth; + mPrevImageHeight = scaledImageHeight; + mPrevCanvasWidth = clientArea.width; + mPrevCanvasHeight = clientArea.height; + + if (mListener == null) { + mListener = new ScrollBarListener(); + mCanvas.getVerticalBar().addSelectionListener(mListener); + } + + beginRenderScheduling(); + + mLayoutHeight = 0; + + if (previewsHaveIdenticalSize() || fixedOrder()) { + // If all the preview boxes are of identical sizes, or if the order is predetermined, + // just lay them out in rows. + rowLayout(); + } else if (previewsFit()) { + layoutFullFit(); + } else { + rowLayout(); + } + + mCanvas.updateScrollBars(); + } + + /** + * Performs a simple layout where the views are laid out in a row, wrapping + * around the top left canvas image. + */ + private void rowLayout() { + // TODO: Separate layout heuristics for portrait and landscape orientations (though + // it also depends on the dimensions of the canvas window, which determines the + // shape of the leftover space) + + int scaledImageWidth = mHScale.getScaledImgSize(); + int scaledImageHeight = mVScale.getScaledImgSize(); + Rectangle clientArea = mCanvas.getClientArea(); + + int availableWidth = clientArea.x + clientArea.width - getX(); + int availableHeight = clientArea.y + clientArea.height - getY(); + int maxVisibleY = clientArea.y + clientArea.height; + + int bottomBorder = scaledImageHeight; + int rightHandSide = scaledImageWidth + PREVIEW_HGAP; + int nextY = 0; + + // First lay out images across the top right hand side + int x = rightHandSide; + int y = 0; + boolean wrapped = false; + + int vgap = PREVIEW_VGAP; + for (RenderPreview preview : mPreviews) { + // If we have forked previews, double the vgap to allow space for two labels + if (preview.isForked()) { + vgap *= 2; + break; + } + } + + List<RenderPreview> aspectOrder; + if (!fixedOrder()) { + aspectOrder = new ArrayList<RenderPreview>(mPreviews); + Collections.sort(aspectOrder, RenderPreview.INCREASING_ASPECT_RATIO); + } else { + aspectOrder = mPreviews; + } + + for (RenderPreview preview : aspectOrder) { + if (x > 0 && x + preview.getWidth() > availableWidth) { + x = rightHandSide; + int prevY = y; + y = nextY; + if ((prevY <= bottomBorder || + y <= bottomBorder) + && Math.max(nextY, y + preview.getHeight()) > bottomBorder) { + // If there's really no visible room below, don't bother + // Similarly, don't wrap individually scaled views + if (bottomBorder < availableHeight - 40 && preview.getScale() < 1.2) { + // If it's closer to the top row than the bottom, just + // mark the next row for left justify instead + if (bottomBorder - y > y + preview.getHeight() - bottomBorder) { + rightHandSide = 0; + wrapped = true; + } else if (!wrapped) { + y = nextY = Math.max(nextY, bottomBorder + vgap); + x = rightHandSide = 0; + wrapped = true; + } + } + } + } + if (x > 0 && y <= bottomBorder + && Math.max(nextY, y + preview.getHeight()) > bottomBorder) { + if (clientArea.height - bottomBorder < preview.getHeight()) { + // No room below the device on the left; just continue on the + // bottom row + } else if (preview.getScale() < 1.2) { + if (bottomBorder - y > y + preview.getHeight() - bottomBorder) { + rightHandSide = 0; + wrapped = true; + } else { + y = nextY = Math.max(nextY, bottomBorder + vgap); + x = rightHandSide = 0; + wrapped = true; + } + } + } + + preview.setPosition(x, y); + + if (y > maxVisibleY && maxVisibleY > 0) { + preview.setVisible(false); + } else if (!preview.isVisible()) { + preview.setVisible(true); + } + + x += preview.getWidth(); + x += PREVIEW_HGAP; + nextY = Math.max(nextY, y + preview.getHeight() + vgap); + } + + mLayoutHeight = nextY; + } + + private boolean fixedOrder() { + return mMode == SCREENS; + } + + /** Returns true if all the previews have the same identical size */ + private boolean previewsHaveIdenticalSize() { + if (!hasPreviews()) { + return true; + } + + Iterator<RenderPreview> iterator = mPreviews.iterator(); + RenderPreview first = iterator.next(); + int width = first.getWidth(); + int height = first.getHeight(); + + while (iterator.hasNext()) { + RenderPreview preview = iterator.next(); + if (width != preview.getWidth() || height != preview.getHeight()) { + return false; + } + } + + return true; + } + + /** Returns true if all the previews can fully fit in the available space */ + private boolean previewsFit() { + int scaledImageWidth = mHScale.getScaledImgSize(); + int scaledImageHeight = mVScale.getScaledImgSize(); + Rectangle clientArea = mCanvas.getClientArea(); + int availableWidth = clientArea.x + clientArea.width - getX(); + int availableHeight = clientArea.y + clientArea.height - getY(); + int bottomBorder = scaledImageHeight; + int rightHandSide = scaledImageWidth + PREVIEW_HGAP; + + // First see if we can fit everything; if so, we can try to make the layouts + // larger such that they fill up all the available space + long availableArea = rightHandSide * bottomBorder + + availableWidth * (Math.max(0, availableHeight - bottomBorder)); + + long requiredArea = 0; + for (RenderPreview preview : mPreviews) { + // Note: This does not include individual preview scale; the layout + // algorithm itself may be tweaking the scales to fit elements within + // the layout + requiredArea += preview.getArea(); + } + + return requiredArea * sScale < availableArea; + } + + private void layoutFullFit() { + int scaledImageWidth = mHScale.getScaledImgSize(); + int scaledImageHeight = mVScale.getScaledImgSize(); + Rectangle clientArea = mCanvas.getClientArea(); + int availableWidth = clientArea.x + clientArea.width - getX(); + int availableHeight = clientArea.y + clientArea.height - getY(); + int maxVisibleY = clientArea.y + clientArea.height; + int bottomBorder = scaledImageHeight; + int rightHandSide = scaledImageWidth + PREVIEW_HGAP; + + int minWidth = Integer.MAX_VALUE; + int minHeight = Integer.MAX_VALUE; + for (RenderPreview preview : mPreviews) { + minWidth = Math.min(minWidth, preview.getWidth()); + minHeight = Math.min(minHeight, preview.getHeight()); + } + + BinPacker packer = new BinPacker(minWidth, minHeight); + + // TODO: Instead of this, just start with client area and occupy scaled image size! + + // Add in gap on right and bottom since we'll add that requirement on the width and + // height rectangles too (for spacing) + packer.addSpace(new Rect(rightHandSide, 0, + availableWidth - rightHandSide + PREVIEW_HGAP, + availableHeight + PREVIEW_VGAP)); + if (maxVisibleY > bottomBorder) { + packer.addSpace(new Rect(0, bottomBorder + PREVIEW_VGAP, + availableWidth + PREVIEW_HGAP, maxVisibleY - bottomBorder + PREVIEW_VGAP)); + } + + // TODO: Sort previews first before attempting to position them? + + ArrayList<RenderPreview> aspectOrder = new ArrayList<RenderPreview>(mPreviews); + Collections.sort(aspectOrder, RenderPreview.INCREASING_ASPECT_RATIO); + + for (RenderPreview preview : aspectOrder) { + int previewWidth = preview.getWidth(); + int previewHeight = preview.getHeight(); + previewHeight += PREVIEW_VGAP; + if (preview.isForked()) { + previewHeight += PREVIEW_VGAP; + } + previewWidth += PREVIEW_HGAP; + // title height? how do I account for that? + Rect position = packer.occupy(previewWidth, previewHeight); + if (position != null) { + preview.setPosition(position.x, position.y); + preview.setVisible(true); + } else { + // Can't fit: give up and do plain row layout + rowLayout(); + return; + } + } + + mLayoutHeight = availableHeight; + } + /** + * Paints the configuration previews + * + * @param gc the graphics context to paint into + */ + void paint(GC gc) { + if (hasPreviews()) { + // Ensure up to date at all times; consider moving if it's too expensive + layout(mNeedLayout); + if (mNeedRender) { + renderPreviews(); + } + if (mNeedZoom) { + boolean allowZoomIn = true /*mMode == NONE*/; + mCanvas.setFitScale(false /*onlyZoomOut*/, allowZoomIn); + mNeedZoom = false; + } + int rootX = getX(); + int rootY = getY(); + + for (RenderPreview preview : mPreviews) { + if (preview.isVisible()) { + int x = rootX + preview.getX(); + int y = rootY + preview.getY(); + preview.paint(gc, x, y); + } + } + + RenderPreview preview = mCanvas.getPreview(); + if (preview != null) { + String displayName = null; + Configuration configuration = preview.getConfiguration(); + if (configuration instanceof VaryingConfiguration) { + // Use override flags from stashed preview, but configuration + // data from live (not varying) configured configuration + VaryingConfiguration cfg = (VaryingConfiguration) configuration; + int flags = cfg.getAlternateFlags() | cfg.getOverrideFlags(); + displayName = NestedConfiguration.computeDisplayName(flags, + getChooser().getConfiguration()); + } else if (configuration instanceof NestedConfiguration) { + int flags = ((NestedConfiguration) configuration).getOverrideFlags(); + displayName = NestedConfiguration.computeDisplayName(flags, + getChooser().getConfiguration()); + } else { + displayName = configuration.getDisplayName(); + } + if (displayName != null) { + CanvasTransform hi = mHScale; + CanvasTransform vi = mVScale; + + int destX = hi.translate(0); + int destY = vi.translate(0); + int destWidth = hi.getScaledImgSize(); + int destHeight = vi.getScaledImgSize(); + + int x = destX + destWidth / 2 - preview.getWidth() / 2; + int y = destY + destHeight; + + preview.paintTitle(gc, x, y, false /*showFile*/, displayName); + } + } + + // Zoom overlay + int x = getZoomX(); + if (x > 0) { + int y = getZoomY(); + int oldAlpha = gc.getAlpha(); + + // Paint background oval rectangle behind the zoom and close icons + gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_GRAY)); + gc.setAlpha(128); + int padding = 3; + int arc = 5; + gc.fillRoundRectangle(x - padding, y - padding, + ZOOM_ICON_WIDTH + 2 * padding, + 4 * ZOOM_ICON_HEIGHT + 2 * padding, arc, arc); + + gc.setAlpha(255); + IconFactory iconFactory = IconFactory.getInstance(); + Image zoomOut = iconFactory.getIcon("zoomminus"); //$NON-NLS-1$); + Image zoomIn = iconFactory.getIcon("zoomplus"); //$NON-NLS-1$); + Image zoom100 = iconFactory.getIcon("zoom100"); //$NON-NLS-1$); + Image close = iconFactory.getIcon("close"); //$NON-NLS-1$); + + gc.drawImage(zoomIn, x, y); + y += ZOOM_ICON_HEIGHT; + gc.drawImage(zoomOut, x, y); + y += ZOOM_ICON_HEIGHT; + gc.drawImage(zoom100, x, y); + y += ZOOM_ICON_HEIGHT; + gc.drawImage(close, x, y); + y += ZOOM_ICON_HEIGHT; + gc.setAlpha(oldAlpha); + } + } else if (mMode == CUSTOM) { + int rootX = getX(); + rootX += mHScale.getScaledImgSize(); + rootX += 2 * PREVIEW_HGAP; + int rootY = getY(); + rootY += 20; + gc.setFont(mCanvas.getFont()); + gc.setForeground(mCanvas.getDisplay().getSystemColor(SWT.COLOR_BLACK)); + gc.drawText("Add previews with \"Add as Thumbnail\"\nin the configuration menu", + rootX, rootY, true); + } + + if (mAnimation != null) { + mAnimation.tick(gc); + } + } + + private void addPreview(@NonNull RenderPreview preview) { + if (mPreviews == null) { + mPreviews = Lists.newArrayList(); + } + mPreviews.add(preview); + } + + /** Adds the current configuration as a new configuration preview */ + public void addAsThumbnail() { + ConfigurationChooser chooser = getChooser(); + String name = chooser.getConfiguration().getDisplayName(); + if (name == null || name.isEmpty()) { + name = getUniqueName(); + } + InputDialog d = new InputDialog( + AdtPlugin.getShell(), + "Add as Thumbnail Preview", // title + "Name of thumbnail:", + name, + null); + if (d.open() == Window.OK) { + selectMode(CUSTOM); + + String newName = d.getValue(); + // Create a new configuration from the current settings in the composite + Configuration configuration = Configuration.copy(chooser.getConfiguration()); + configuration.setDisplayName(newName); + + RenderPreview preview = RenderPreview.create(this, configuration); + addPreview(preview); + + layout(true); + beginRenderScheduling(); + scheduleRender(preview); + mCanvas.setFitScale(true /* onlyZoomOut */, false /*allowZoomIn*/); + + if (mManualList == null) { + loadList(); + } + if (mManualList != null) { + mManualList.add(preview); + saveList(); + } + } + } + + /** + * Computes a unique new name for a configuration preview that represents + * the current, default configuration + * + * @return a unique name + */ + private String getUniqueName() { + if (mPreviews == null || mPreviews.isEmpty()) { + // NO, not for the first preview! + return "Config1"; + } + + Set<String> names = new HashSet<String>(mPreviews.size()); + for (RenderPreview preview : mPreviews) { + names.add(preview.getDisplayName()); + } + + int index = 2; + while (true) { + String name = String.format("Config%1$d", index); + if (!names.contains(name)) { + return name; + } + index++; + } + } + + /** Generates a bunch of default configuration preview thumbnails */ + public void addDefaultPreviews() { + ConfigurationChooser chooser = getChooser(); + Configuration parent = chooser.getConfiguration(); + if (parent instanceof NestedConfiguration) { + parent = ((NestedConfiguration) parent).getParent(); + } + if (mCanvas.getImageOverlay().getImage() != null) { + // Create Language variation + createLocaleVariation(chooser, parent); + + // Vary screen size + // TODO: Be smarter here: Pick a screen that is both as differently as possible + // from the current screen as well as also supported. So consider + // things like supported screens, targetSdk etc. + createScreenVariations(parent); + + // Vary orientation + createStateVariation(chooser, parent); + + // Vary render target + createRenderTargetVariation(chooser, parent); + } + + // Also add in include-context previews, if any + addIncludedInPreviews(); + + // Make a placeholder preview for the current screen, in case we switch from it + RenderPreview preview = RenderPreview.create(this, parent); + mCanvas.setPreview(preview); + + sortPreviewsByOrientation(); + } + + private void createRenderTargetVariation(ConfigurationChooser chooser, Configuration parent) { + /* This is disabled for now: need to load multiple versions of layoutlib. + When I did this, there seemed to be some drug interactions between + them, and I would end up with NPEs in layoutlib code which normally works. + VaryingConfiguration configuration = + VaryingConfiguration.create(chooser, parent); + configuration.setAlternatingTarget(true); + configuration.syncFolderConfig(); + addPreview(RenderPreview.create(this, configuration)); + */ + } + + private void createStateVariation(ConfigurationChooser chooser, Configuration parent) { + State currentState = parent.getDeviceState(); + State nextState = parent.getNextDeviceState(currentState); + if (nextState != currentState) { + VaryingConfiguration configuration = + VaryingConfiguration.create(chooser, parent); + configuration.setAlternateDeviceState(true); + configuration.syncFolderConfig(); + addPreview(RenderPreview.create(this, configuration)); + } + } + + private void createLocaleVariation(ConfigurationChooser chooser, Configuration parent) { + LocaleQualifier currentLanguage = parent.getLocale().qualifier; + for (Locale locale : chooser.getLocaleList()) { + LocaleQualifier qualifier = locale.qualifier; + if (!qualifier.getLanguage().equals(currentLanguage.getLanguage())) { + VaryingConfiguration configuration = + VaryingConfiguration.create(chooser, parent); + configuration.setAlternateLocale(true); + configuration.syncFolderConfig(); + addPreview(RenderPreview.create(this, configuration)); + break; + } + } + } + + private void createScreenVariations(Configuration parent) { + ConfigurationChooser chooser = getChooser(); + VaryingConfiguration configuration; + + configuration = VaryingConfiguration.create(chooser, parent); + configuration.setVariation(0); + configuration.setAlternateDevice(true); + configuration.syncFolderConfig(); + addPreview(RenderPreview.create(this, configuration)); + + configuration = VaryingConfiguration.create(chooser, parent); + configuration.setVariation(1); + configuration.setAlternateDevice(true); + configuration.syncFolderConfig(); + addPreview(RenderPreview.create(this, configuration)); + } + + /** + * Returns the current mode as seen by this {@link RenderPreviewManager}. + * Note that it may not yet have been synced with the global mode kept in + * {@link AdtPrefs#getRenderPreviewMode()}. + * + * @return the current preview mode + */ + @NonNull + public RenderPreviewMode getMode() { + return mMode; + } + + /** + * Update the set of previews for the current mode + * + * @param force force a refresh even if the preview type has not changed + * @return true if the views were recomputed, false if the previews were + * already showing and the mode not changed + */ + public boolean recomputePreviews(boolean force) { + RenderPreviewMode newMode = AdtPrefs.getPrefs().getRenderPreviewMode(); + if (newMode == mMode && !force + && (mRevision == sRevision + || mMode == NONE + || mMode == CUSTOM)) { + return false; + } + + RenderPreviewMode oldMode = mMode; + mMode = newMode; + mRevision = sRevision; + + sScale = 1.0; + disposePreviews(); + + switch (mMode) { + case DEFAULT: + addDefaultPreviews(); + break; + case INCLUDES: + addIncludedInPreviews(); + break; + case LOCALES: + addLocalePreviews(); + break; + case SCREENS: + addScreenSizePreviews(); + break; + case VARIATIONS: + addVariationPreviews(); + break; + case CUSTOM: + addManualPreviews(); + break; + case NONE: + // Can't just set mNeedZoom because with no previews, the paint + // method does nothing + mCanvas.setFitScale(false /*onlyZoomOut*/, true /*allowZoomIn*/); + break; + default: + assert false : mMode; + } + + // We schedule layout for the next redraw rather than process it here immediately; + // not only does this let us avoid doing work for windows where the tab is in the + // background, but when a file is opened we may not know the size of the canvas + // yet, and the layout methods need it in order to do a good job. By the time + // the canvas is painted, we have accurate bounds. + mNeedLayout = mNeedRender = true; + mCanvas.redraw(); + + if (oldMode != mMode && (oldMode == NONE || mMode == NONE)) { + // If entering or exiting preview mode: updating padding which is compressed + // only in preview mode. + mCanvas.getHorizontalTransform().refresh(); + mCanvas.getVerticalTransform().refresh(); + } + + return true; + } + + /** + * Sets the new render preview mode to use + * + * @param mode the new mode + */ + public void selectMode(@NonNull RenderPreviewMode mode) { + if (mode != mMode) { + AdtPrefs.getPrefs().setPreviewMode(mode); + recomputePreviews(false); + } + } + + /** Similar to {@link #addDefaultPreviews()} but for locales */ + public void addLocalePreviews() { + + ConfigurationChooser chooser = getChooser(); + List<Locale> locales = chooser.getLocaleList(); + Configuration parent = chooser.getConfiguration(); + + for (Locale locale : locales) { + if (!locale.hasLanguage() && !locale.hasRegion()) { + continue; + } + NestedConfiguration configuration = NestedConfiguration.create(chooser, parent); + configuration.setOverrideLocale(true); + configuration.setLocale(locale, false); + + String displayName = ConfigurationChooser.getLocaleLabel(chooser, locale, false); + assert displayName != null; // it's never non null when locale is non null + configuration.setDisplayName(displayName); + + addPreview(RenderPreview.create(this, configuration)); + } + + // Make a placeholder preview for the current screen, in case we switch from it + Configuration configuration = parent; + Locale locale = configuration.getLocale(); + String label = ConfigurationChooser.getLocaleLabel(chooser, locale, false); + if (label == null) { + label = "default"; + } + configuration.setDisplayName(label); + RenderPreview preview = RenderPreview.create(this, parent); + if (preview != null) { + mCanvas.setPreview(preview); + } + + // No need to sort: they should all be identical + } + + /** Similar to {@link #addDefaultPreviews()} but for screen sizes */ + public void addScreenSizePreviews() { + ConfigurationChooser chooser = getChooser(); + Collection<Device> devices = chooser.getDevices(); + Configuration configuration = chooser.getConfiguration(); + boolean canScaleNinePatch = configuration.supports(Capability.FIXED_SCALABLE_NINE_PATCH); + + // Rearrange the devices a bit such that the most interesting devices bubble + // to the front + // 10" tablet, 7" tablet, reference phones, tiny phone, and in general the first + // version of each seen screen size + List<Device> sorted = new ArrayList<Device>(devices); + Set<ScreenSize> seenSizes = new HashSet<ScreenSize>(); + State currentState = configuration.getDeviceState(); + String currentStateName = currentState != null ? currentState.getName() : ""; + + for (int i = 0, n = sorted.size(); i < n; i++) { + Device device = sorted.get(i); + boolean interesting = false; + + State state = device.getState(currentStateName); + if (state == null) { + state = device.getAllStates().get(0); + } + + if (device.getName().startsWith("Nexus ") //$NON-NLS-1$ + || device.getName().endsWith(" Nexus")) { //$NON-NLS-1$ + // Not String#contains("Nexus") because that would also pick up all the generic + // entries ("3.7in WVGA (Nexus One)") so we'd have them duplicated + interesting = true; + } + + FolderConfiguration c = DeviceConfigHelper.getFolderConfig(state); + if (c != null) { + ScreenSizeQualifier sizeQualifier = c.getScreenSizeQualifier(); + if (sizeQualifier != null) { + ScreenSize size = sizeQualifier.getValue(); + if (!seenSizes.contains(size)) { + seenSizes.add(size); + interesting = true; + } + } + + // Omit LDPI, not really used anymore + DensityQualifier density = c.getDensityQualifier(); + if (density != null) { + Density d = density.getValue(); + if (d == Density.LOW) { + interesting = false; + } + + if (!canScaleNinePatch && d == Density.TV) { + interesting = false; + } + } + } + + if (interesting) { + NestedConfiguration screenConfig = NestedConfiguration.create(chooser, + configuration); + screenConfig.setOverrideDevice(true); + screenConfig.setDevice(device, true); + screenConfig.syncFolderConfig(); + screenConfig.setDisplayName(ConfigurationChooser.getDeviceLabel(device, true)); + addPreview(RenderPreview.create(this, screenConfig)); + } + } + + // Sorted by screen size, in decreasing order + sortPreviewsByScreenSize(); + } + + /** + * Previews this layout as included in other layouts + */ + public void addIncludedInPreviews() { + ConfigurationChooser chooser = getChooser(); + IProject project = chooser.getProject(); + if (project == null) { + return; + } + IncludeFinder finder = IncludeFinder.get(project); + + final List<Reference> includedBy = finder.getIncludedBy(chooser.getEditedFile()); + + if (includedBy == null || includedBy.isEmpty()) { + // TODO: Generate some useful defaults, such as including it in a ListView + // as the list item layout? + return; + } + + for (final Reference reference : includedBy) { + String title = reference.getDisplayName(); + Configuration config = Configuration.create(chooser.getConfiguration(), + reference.getFile()); + RenderPreview preview = RenderPreview.create(this, config); + preview.setDisplayName(title); + preview.setIncludedWithin(reference); + + addPreview(preview); + } + + sortPreviewsByOrientation(); + } + + /** + * Previews this layout as included in other layouts + */ + public void addVariationPreviews() { + ConfigurationChooser chooser = getChooser(); + + IFile file = chooser.getEditedFile(); + List<IFile> variations = AdtUtils.getResourceVariations(file, false /*includeSelf*/); + + // Sort by parent folder + Collections.sort(variations, new Comparator<IFile>() { + @Override + public int compare(IFile file1, IFile file2) { + return file1.getParent().getName().compareTo(file2.getParent().getName()); + } + }); + + Configuration currentConfig = chooser.getConfiguration(); + + for (IFile variation : variations) { + String title = variation.getParent().getName(); + Configuration config = Configuration.create(chooser.getConfiguration(), variation); + config.setTheme(currentConfig.getTheme()); + config.setActivity(currentConfig.getActivity()); + RenderPreview preview = RenderPreview.create(this, config); + preview.setDisplayName(title); + preview.setAlternateInput(variation); + + addPreview(preview); + } + + sortPreviewsByOrientation(); + } + + /** + * Previews this layout using a custom configured set of layouts + */ + public void addManualPreviews() { + if (mManualList == null) { + loadList(); + } else { + mPreviews = mManualList.createPreviews(mCanvas); + } + } + + private void loadList() { + IProject project = getChooser().getProject(); + if (project == null) { + return; + } + + if (mManualList == null) { + mManualList = RenderPreviewList.get(project); + } + + try { + mManualList.load(getChooser().getDevices()); + mPreviews = mManualList.createPreviews(mCanvas); + } catch (IOException e) { + AdtPlugin.log(e, null); + } + } + + private void saveList() { + if (mManualList != null) { + try { + mManualList.save(); + } catch (IOException e) { + AdtPlugin.log(e, null); + } + } + } + + void rename(ConfigurationDescription description, String newName) { + IProject project = getChooser().getProject(); + if (project == null) { + return; + } + + if (mManualList == null) { + mManualList = RenderPreviewList.get(project); + } + description.displayName = newName; + saveList(); + } + + + /** + * Notifies that the main configuration has changed. + * + * @param flags the change flags, a bitmask corresponding to the + * {@code CHANGE_} constants in {@link ConfigurationClient} + */ + public void configurationChanged(int flags) { + // Similar to renderPreviews, but only acts on incomplete previews + if (hasPreviews()) { + // Do zoomed images first + beginRenderScheduling(); + for (RenderPreview preview : mPreviews) { + if (preview.getScale() > 1.2) { + preview.configurationChanged(flags); + } + } + for (RenderPreview preview : mPreviews) { + if (preview.getScale() <= 1.2) { + preview.configurationChanged(flags); + } + } + RenderPreview preview = mCanvas.getPreview(); + if (preview != null) { + preview.configurationChanged(flags); + preview.dispose(); + } + mNeedLayout = true; + mCanvas.redraw(); + } + } + + /** Updates the configuration preview thumbnails */ + public void renderPreviews() { + if (hasPreviews()) { + beginRenderScheduling(); + + // Process in visual order + ArrayList<RenderPreview> visualOrder = new ArrayList<RenderPreview>(mPreviews); + Collections.sort(visualOrder, RenderPreview.VISUAL_ORDER); + + // Do zoomed images first + for (RenderPreview preview : visualOrder) { + if (preview.getScale() > 1.2 && preview.isVisible()) { + scheduleRender(preview); + } + } + // Non-zoomed images + for (RenderPreview preview : visualOrder) { + if (preview.getScale() <= 1.2 && preview.isVisible()) { + scheduleRender(preview); + } + } + } + + mNeedRender = false; + } + + private int mPendingRenderCount; + + /** + * Reset rendering scheduling. The next render request will be scheduled + * after a single delay unit. + */ + public void beginRenderScheduling() { + mPendingRenderCount = 0; + } + + /** + * Schedule rendering the given preview. Each successive call will add an additional + * delay unit to the schedule from the previous {@link #scheduleRender(RenderPreview)} + * call, until {@link #beginRenderScheduling()} is called again. + * + * @param preview the preview to render + */ + public void scheduleRender(@NonNull RenderPreview preview) { + mPendingRenderCount++; + preview.render(mPendingRenderCount * RENDER_DELAY); + } + + /** + * Switch to the given configuration preview + * + * @param preview the preview to switch to + */ + public void switchTo(@NonNull RenderPreview preview) { + IFile input = preview.getAlternateInput(); + if (input != null) { + IWorkbenchPartSite site = mCanvas.getEditorDelegate().getEditor().getSite(); + try { + // This switches to the given file, but the file might not have + // an identical configuration to what was shown in the preview. + // For example, while viewing a 10" layout-xlarge file, it might + // show a preview for a 5" version tied to the default layout. If + // you click on it, it will open the default layout file, but it might + // be using a different screen size; any of those that match the + // default layout, say a 3.8". + // + // Thus, we need to also perform a screen size sync first + Configuration configuration = preview.getConfiguration(); + boolean setSize = false; + if (configuration instanceof NestedConfiguration) { + NestedConfiguration nestedConfig = (NestedConfiguration) configuration; + setSize = nestedConfig.isOverridingDevice(); + if (configuration instanceof VaryingConfiguration) { + VaryingConfiguration c = (VaryingConfiguration) configuration; + setSize |= c.isAlternatingDevice(); + } + + if (setSize) { + ConfigurationChooser chooser = getChooser(); + IFile editedFile = chooser.getEditedFile(); + if (editedFile != null) { + chooser.syncToVariations(CFG_DEVICE|CFG_DEVICE_STATE, + editedFile, configuration, false, false); + } + } + } + + IDE.openEditor(site.getWorkbenchWindow().getActivePage(), input, + CommonXmlEditor.ID); + } catch (PartInitException e) { + AdtPlugin.log(e, null); + } + return; + } + + GraphicalEditorPart editor = mCanvas.getEditorDelegate().getGraphicalEditor(); + ConfigurationChooser chooser = editor.getConfigurationChooser(); + + Configuration originalConfiguration = chooser.getConfiguration(); + + // The new configuration is the configuration which will become the configuration + // in the layout editor's chooser + Configuration previewConfiguration = preview.getConfiguration(); + Configuration newConfiguration = previewConfiguration; + if (newConfiguration instanceof NestedConfiguration) { + // Should never use a complementing configuration for the main + // rendering's configuration; instead, create a new configuration + // with a snapshot of the configuration's current values + newConfiguration = Configuration.copy(previewConfiguration); + + // Remap all the previews to be parented to this new copy instead + // of the old one (which is no longer controlled by the chooser) + for (RenderPreview p : mPreviews) { + Configuration configuration = p.getConfiguration(); + if (configuration instanceof NestedConfiguration) { + NestedConfiguration nested = (NestedConfiguration) configuration; + nested.setParent(newConfiguration); + } + } + } + + // Make a preview for the configuration which *was* showing in the + // chooser up until this point: + RenderPreview newPreview = mCanvas.getPreview(); + if (newPreview == null) { + newPreview = RenderPreview.create(this, originalConfiguration); + } + + // Update its configuration such that it is complementing or inheriting + // from the new chosen configuration + if (previewConfiguration instanceof VaryingConfiguration) { + VaryingConfiguration varying = VaryingConfiguration.create( + (VaryingConfiguration) previewConfiguration, + newConfiguration); + varying.updateDisplayName(); + originalConfiguration = varying; + newPreview.setConfiguration(originalConfiguration); + } else if (previewConfiguration instanceof NestedConfiguration) { + NestedConfiguration nested = NestedConfiguration.create( + (NestedConfiguration) previewConfiguration, + originalConfiguration, + newConfiguration); + nested.setDisplayName(nested.computeDisplayName()); + originalConfiguration = nested; + newPreview.setConfiguration(originalConfiguration); + } + + // Replace clicked preview with preview of the formerly edited main configuration + // This doesn't work yet because the image overlay has had its image + // replaced by the configuration previews! I should make a list of them + //newPreview.setFullImage(mImageOverlay.getAwtImage()); + for (int i = 0, n = mPreviews.size(); i < n; i++) { + if (preview == mPreviews.get(i)) { + mPreviews.set(i, newPreview); + break; + } + } + + // Stash the corresponding preview (not active) on the canvas so we can + // retrieve it if clicking to some other preview later + mCanvas.setPreview(preview); + preview.setVisible(false); + + // Switch to the configuration from the clicked preview (though it's + // most likely a copy, see above) + chooser.setConfiguration(newConfiguration); + editor.changed(MASK_ALL); + + // Scroll to the top again, if necessary + mCanvas.getVerticalBar().setSelection(mCanvas.getVerticalBar().getMinimum()); + + mNeedLayout = mNeedZoom = true; + mCanvas.redraw(); + mAnimation = new SwapAnimation(preview, newPreview); + } + + /** + * Gets the preview at the given location, or null if none. This is + * currently deeply tied to where things are painted in onPaint(). + */ + RenderPreview getPreview(ControlPoint mousePos) { + if (hasPreviews()) { + int rootX = getX(); + if (mousePos.x < rootX) { + return null; + } + int rootY = getY(); + + for (RenderPreview preview : mPreviews) { + int x = rootX + preview.getX(); + int y = rootY + preview.getY(); + if (mousePos.x >= x && mousePos.x <= x + preview.getWidth()) { + if (mousePos.y >= y && mousePos.y <= y + preview.getHeight()) { + return preview; + } + } + } + } + + return null; + } + + private int getX() { + return mHScale.translate(0); + } + + private int getY() { + return mVScale.translate(0); + } + + private int getZoomX() { + Rectangle clientArea = mCanvas.getClientArea(); + int x = clientArea.x + clientArea.width - ZOOM_ICON_WIDTH; + if (x < mHScale.getScaledImgSize() + PREVIEW_HGAP) { + // No visible previews because the main image is zoomed too far + return -1; + } + + return x - 6; + } + + private int getZoomY() { + Rectangle clientArea = mCanvas.getClientArea(); + return clientArea.y + 5; + } + + /** + * Returns the height of the layout + * + * @return the height + */ + public int getHeight() { + return mLayoutHeight; + } + + /** + * Notifies that preview manager that the mouse cursor has moved to the + * given control position within the layout canvas + * + * @param mousePos the mouse position, relative to the layout canvas + */ + public void moved(ControlPoint mousePos) { + RenderPreview hovered = getPreview(mousePos); + if (hovered != mActivePreview) { + if (mActivePreview != null) { + mActivePreview.setActive(false); + } + mActivePreview = hovered; + if (mActivePreview != null) { + mActivePreview.setActive(true); + } + mCanvas.redraw(); + } + } + + /** + * Notifies that preview manager that the mouse cursor has entered the layout canvas + * + * @param mousePos the mouse position, relative to the layout canvas + */ + public void enter(ControlPoint mousePos) { + moved(mousePos); + } + + /** + * Notifies that preview manager that the mouse cursor has exited the layout canvas + * + * @param mousePos the mouse position, relative to the layout canvas + */ + public void exit(ControlPoint mousePos) { + if (mActivePreview != null) { + mActivePreview.setActive(false); + } + mActivePreview = null; + mCanvas.redraw(); + } + + /** + * Process a mouse click, and return true if it was handled by this manager + * (e.g. the click was on a preview) + * + * @param mousePos the mouse position where the click occurred + * @return true if the click occurred over a preview and was handled, false otherwise + */ + public boolean click(ControlPoint mousePos) { + // Clicked zoom? + int x = getZoomX(); + if (x > 0) { + if (mousePos.x >= x && mousePos.x <= x + ZOOM_ICON_WIDTH) { + int y = getZoomY(); + if (mousePos.y >= y && mousePos.y <= y + 4 * ZOOM_ICON_HEIGHT) { + if (mousePos.y < y + ZOOM_ICON_HEIGHT) { + zoomIn(); + } else if (mousePos.y < y + 2 * ZOOM_ICON_HEIGHT) { + zoomOut(); + } else if (mousePos.y < y + 3 * ZOOM_ICON_HEIGHT) { + zoomReset(); + } else { + selectMode(NONE); + } + return true; + } + } + } + + RenderPreview preview = getPreview(mousePos); + if (preview != null) { + boolean handled = preview.click(mousePos.x - getX() - preview.getX(), + mousePos.y - getY() - preview.getY()); + if (handled) { + // In case layout was performed, there could be a new preview + // under this coordinate now, so make sure it's hover etc + // shows up + moved(mousePos); + return true; + } + } + + return false; + } + + /** + * Returns true if there are thumbnail previews + * + * @return true if thumbnails are being shown + */ + public boolean hasPreviews() { + return mPreviews != null && !mPreviews.isEmpty(); + } + + + private void sortPreviewsByScreenSize() { + if (mPreviews != null) { + Collections.sort(mPreviews, new Comparator<RenderPreview>() { + @Override + public int compare(RenderPreview preview1, RenderPreview preview2) { + Configuration config1 = preview1.getConfiguration(); + Configuration config2 = preview2.getConfiguration(); + Device device1 = config1.getDevice(); + Device device2 = config1.getDevice(); + if (device1 != null && device2 != null) { + Screen screen1 = device1.getDefaultHardware().getScreen(); + Screen screen2 = device2.getDefaultHardware().getScreen(); + if (screen1 != null && screen2 != null) { + double delta = screen1.getDiagonalLength() + - screen2.getDiagonalLength(); + if (delta != 0.0) { + return (int) Math.signum(delta); + } else { + if (screen1.getPixelDensity() != screen2.getPixelDensity()) { + return screen1.getPixelDensity().compareTo( + screen2.getPixelDensity()); + } + } + } + + } + State state1 = config1.getDeviceState(); + State state2 = config2.getDeviceState(); + if (state1 != state2 && state1 != null && state2 != null) { + return state1.getName().compareTo(state2.getName()); + } + + return preview1.getDisplayName().compareTo(preview2.getDisplayName()); + } + }); + } + } + + private void sortPreviewsByOrientation() { + if (mPreviews != null) { + Collections.sort(mPreviews, new Comparator<RenderPreview>() { + @Override + public int compare(RenderPreview preview1, RenderPreview preview2) { + Configuration config1 = preview1.getConfiguration(); + Configuration config2 = preview2.getConfiguration(); + State state1 = config1.getDeviceState(); + State state2 = config2.getDeviceState(); + if (state1 != state2 && state1 != null && state2 != null) { + return state1.getName().compareTo(state2.getName()); + } + + return preview1.getDisplayName().compareTo(preview2.getDisplayName()); + } + }); + } + } + + /** + * Vertical scrollbar listener which updates render previews which are not + * visible and triggers a redraw + */ + private class ScrollBarListener implements SelectionListener { + @Override + public void widgetSelected(SelectionEvent e) { + if (mPreviews == null) { + return; + } + + ScrollBar bar = mCanvas.getVerticalBar(); + int selection = bar.getSelection(); + int thumb = bar.getThumb(); + int maxY = selection + thumb; + beginRenderScheduling(); + for (RenderPreview preview : mPreviews) { + if (!preview.isVisible() && preview.getY() <= maxY) { + preview.setVisible(true); + } + } + } + + @Override + public void widgetDefaultSelected(SelectionEvent e) { + } + } + + /** Animation overlay shown briefly after swapping two previews */ + private class SwapAnimation implements Runnable { + private long begin; + private long end; + private static final long DURATION = 400; // ms + private Rect initialRect1; + private Rect targetRect1; + private Rect initialRect2; + private Rect targetRect2; + private RenderPreview preview; + + SwapAnimation(RenderPreview preview1, RenderPreview preview2) { + begin = System.currentTimeMillis(); + end = begin + DURATION; + + initialRect1 = new Rect(preview1.getX(), preview1.getY(), + preview1.getWidth(), preview1.getHeight()); + + CanvasTransform hi = mCanvas.getHorizontalTransform(); + CanvasTransform vi = mCanvas.getVerticalTransform(); + initialRect2 = new Rect(hi.translate(0), vi.translate(0), + hi.getScaledImgSize(), vi.getScaledImgSize()); + preview = preview2; + } + + void tick(GC gc) { + long now = System.currentTimeMillis(); + if (now > end || mCanvas.isDisposed()) { + mAnimation = null; + return; + } + + CanvasTransform hi = mCanvas.getHorizontalTransform(); + CanvasTransform vi = mCanvas.getVerticalTransform(); + if (targetRect1 == null) { + targetRect1 = new Rect(hi.translate(0), vi.translate(0), + hi.getScaledImgSize(), vi.getScaledImgSize()); + } + double portion = (now - begin) / (double) DURATION; + Rect rect1 = new Rect( + (int) (portion * (targetRect1.x - initialRect1.x) + initialRect1.x), + (int) (portion * (targetRect1.y - initialRect1.y) + initialRect1.y), + (int) (portion * (targetRect1.w - initialRect1.w) + initialRect1.w), + (int) (portion * (targetRect1.h - initialRect1.h) + initialRect1.h)); + + if (targetRect2 == null) { + targetRect2 = new Rect(preview.getX(), preview.getY(), + preview.getWidth(), preview.getHeight()); + } + portion = (now - begin) / (double) DURATION; + Rect rect2 = new Rect( + (int) (portion * (targetRect2.x - initialRect2.x) + initialRect2.x), + (int) (portion * (targetRect2.y - initialRect2.y) + initialRect2.y), + (int) (portion * (targetRect2.w - initialRect2.w) + initialRect2.w), + (int) (portion * (targetRect2.h - initialRect2.h) + initialRect2.h)); + + gc.setForeground(gc.getDevice().getSystemColor(SWT.COLOR_GRAY)); + gc.drawRectangle(rect1.x, rect1.y, rect1.w, rect1.h); + gc.drawRectangle(rect2.x, rect2.y, rect2.w, rect2.h); + + mCanvas.getDisplay().timerExec(5, this); + } + + @Override + public void run() { + mCanvas.redraw(); + } + } + + /** + * Notifies the {@linkplain RenderPreviewManager} that the configuration used + * in the main chooser has been changed. This may require updating parent references + * in the preview configurations inheriting from it. + * + * @param oldConfiguration the previous configuration + * @param newConfiguration the new configuration in the chooser + */ + public void updateChooserConfig( + @NonNull Configuration oldConfiguration, + @NonNull Configuration newConfiguration) { + if (hasPreviews()) { + for (RenderPreview preview : mPreviews) { + Configuration configuration = preview.getConfiguration(); + if (configuration instanceof NestedConfiguration) { + NestedConfiguration nestedConfig = (NestedConfiguration) configuration; + if (nestedConfig.getParent() == oldConfiguration) { + nestedConfig.setParent(newConfiguration); + } + } + } + } + } +} |