DeviceProfile.java revision a50a419b824c10f11d12097215982c978f740e00
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher3; 18 19import android.appwidget.AppWidgetHostView; 20import android.content.ComponentName; 21import android.content.Context; 22import android.content.res.Resources; 23import android.graphics.Paint; 24import android.graphics.Paint.FontMetrics; 25import android.graphics.Point; 26import android.graphics.Rect; 27import android.util.DisplayMetrics; 28import android.view.Gravity; 29import android.view.View; 30import android.view.ViewGroup; 31import android.view.ViewGroup.LayoutParams; 32import android.view.ViewGroup.MarginLayoutParams; 33import android.widget.FrameLayout; 34import android.widget.LinearLayout; 35 36public class DeviceProfile { 37 38 public final InvariantDeviceProfile inv; 39 40 // Device properties 41 public final boolean isTablet; 42 public final boolean isLargeTablet; 43 public final boolean isPhone; 44 public final boolean transposeLayoutWithOrientation; 45 46 // Device properties in current orientation 47 public final boolean isLandscape; 48 public final int widthPx; 49 public final int heightPx; 50 public final int availableWidthPx; 51 public final int availableHeightPx; 52 /** 53 * The maximum amount of left/right workspace padding as a percentage of the screen width. 54 * To be clear, this means that up to 7% of the screen width can be used as left padding, and 55 * 7% of the screen width can be used as right padding. 56 */ 57 private static final float MAX_HORIZONTAL_PADDING_PERCENT = 0.14f; 58 59 // Overview mode 60 private final int overviewModeMinIconZoneHeightPx; 61 private final int overviewModeMaxIconZoneHeightPx; 62 private final int overviewModeBarItemWidthPx; 63 private final int overviewModeBarSpacerWidthPx; 64 private final float overviewModeIconZoneRatio; 65 66 // Workspace 67 private int desiredWorkspaceLeftRightMarginPx; 68 public final int edgeMarginPx; 69 public final Rect defaultWidgetPadding; 70 private final int pageIndicatorHeightPx; 71 private final int defaultPageSpacingPx; 72 private float dragViewScale; 73 74 // Workspace icons 75 public int iconSizePx; 76 public int iconTextSizePx; 77 public int iconDrawablePaddingPx; 78 public int iconDrawablePaddingOriginalPx; 79 80 public int cellWidthPx; 81 public int cellHeightPx; 82 83 // Folder 84 public int folderBackgroundOffset; 85 public int folderIconSizePx; 86 public int folderCellWidthPx; 87 public int folderCellHeightPx; 88 89 // Hotseat 90 public int hotseatCellWidthPx; 91 public int hotseatCellHeightPx; 92 public int hotseatIconSizePx; 93 private int normalHotseatBarHeightPx, shortHotseatBarHeightPx; 94 private int hotseatBarHeightPx; // One of the above. 95 96 // All apps 97 public int allAppsNumCols; 98 public int allAppsNumPredictiveCols; 99 public int allAppsButtonVisualSize; 100 public final int allAppsIconSizePx; 101 public final float allAppsIconTextSizeSp; 102 103 // QSB 104 private int searchBarWidgetInternalPaddingTop, searchBarWidgetInternalPaddingBottom; 105 private int searchBarTopPaddingPx; 106 private int normalSearchBarBottomPaddingPx, tallSearchBarBottomPaddingPx; 107 private int searchBarBottomPaddingPx; // One of the above. 108 private int normalSearchBarSpaceHeightPx, tallSearchBarSpaceHeightPx; 109 private int searchBarSpaceHeightPx; // One of the above. 110 111 public DeviceProfile(Context context, InvariantDeviceProfile inv, 112 Point minSize, Point maxSize, 113 int width, int height, boolean isLandscape) { 114 115 this.inv = inv; 116 this.isLandscape = isLandscape; 117 118 Resources res = context.getResources(); 119 DisplayMetrics dm = res.getDisplayMetrics(); 120 121 // Constants from resources 122 isTablet = res.getBoolean(R.bool.is_tablet); 123 isLargeTablet = res.getBoolean(R.bool.is_large_tablet); 124 isPhone = !isTablet && !isLargeTablet; 125 126 // Some more constants 127 transposeLayoutWithOrientation = 128 res.getBoolean(R.bool.hotseat_transpose_layout_with_orientation); 129 130 ComponentName cn = new ComponentName(context.getPackageName(), 131 this.getClass().getName()); 132 defaultWidgetPadding = AppWidgetHostView.getDefaultPaddingForWidget(context, cn, null); 133 edgeMarginPx = res.getDimensionPixelSize(R.dimen.dynamic_grid_edge_margin); 134 desiredWorkspaceLeftRightMarginPx = 2 * edgeMarginPx; 135 pageIndicatorHeightPx = 136 res.getDimensionPixelSize(R.dimen.dynamic_grid_page_indicator_height); 137 defaultPageSpacingPx = 138 res.getDimensionPixelSize(R.dimen.dynamic_grid_workspace_page_spacing); 139 overviewModeMinIconZoneHeightPx = 140 res.getDimensionPixelSize(R.dimen.dynamic_grid_overview_min_icon_zone_height); 141 overviewModeMaxIconZoneHeightPx = 142 res.getDimensionPixelSize(R.dimen.dynamic_grid_overview_max_icon_zone_height); 143 overviewModeBarItemWidthPx = 144 res.getDimensionPixelSize(R.dimen.dynamic_grid_overview_bar_item_width); 145 overviewModeBarSpacerWidthPx = 146 res.getDimensionPixelSize(R.dimen.dynamic_grid_overview_bar_spacer_width); 147 overviewModeIconZoneRatio = 148 res.getInteger(R.integer.config_dynamic_grid_overview_icon_zone_percentage) / 100f; 149 iconDrawablePaddingOriginalPx = 150 res.getDimensionPixelSize(R.dimen.dynamic_grid_icon_drawable_padding); 151 152 // AllApps uses the original non-scaled icon text size 153 allAppsIconTextSizeSp = inv.iconTextSize; 154 155 // AllApps uses the original non-scaled icon size 156 allAppsIconSizePx = Utilities.pxFromDp(inv.iconSize, dm); 157 158 // Determine sizes. 159 widthPx = width; 160 heightPx = height; 161 if (isLandscape) { 162 availableWidthPx = maxSize.x; 163 availableHeightPx = minSize.y; 164 } else { 165 availableWidthPx = minSize.x; 166 availableHeightPx = maxSize.y; 167 } 168 169 // Calculate the remaining vars 170 updateAvailableDimensions(dm, res); 171 computeAllAppsButtonSize(context); 172 } 173 174 /** 175 * Determine the exact visual footprint of the all apps button, taking into account scaling 176 * and internal padding of the drawable. 177 */ 178 private void computeAllAppsButtonSize(Context context) { 179 Resources res = context.getResources(); 180 float padding = res.getInteger(R.integer.config_allAppsButtonPaddingPercent) / 100f; 181 allAppsButtonVisualSize = (int) (hotseatIconSizePx * (1 - padding)) - context.getResources() 182 .getDimensionPixelSize(R.dimen.all_apps_button_scale_down); 183 } 184 185 private void updateAvailableDimensions(DisplayMetrics dm, Resources res) { 186 // Check to see if the icons fit in the new available height. If not, then we need to 187 // shrink the icon size. 188 float scale = 1f; 189 int drawablePadding = iconDrawablePaddingOriginalPx; 190 updateIconSize(1f, drawablePadding, res, dm); 191 float usedHeight = (cellHeightPx * inv.numRows); 192 193 // We only care about the top and bottom workspace padding, which is not affected by RTL. 194 Rect workspacePadding = getWorkspacePadding(false /* isLayoutRtl */); 195 int maxHeight = (availableHeightPx - workspacePadding.top - workspacePadding.bottom); 196 if (usedHeight > maxHeight) { 197 scale = maxHeight / usedHeight; 198 drawablePadding = 0; 199 } 200 updateIconSize(scale, drawablePadding, res, dm); 201 } 202 203 private void updateIconSize(float scale, int drawablePadding, Resources res, 204 DisplayMetrics dm) { 205 iconSizePx = (int) (Utilities.pxFromDp(inv.iconSize, dm) * scale); 206 iconTextSizePx = (int) (Utilities.pxFromSp(inv.iconTextSize, dm) * scale); 207 iconDrawablePaddingPx = drawablePadding; 208 hotseatIconSizePx = (int) (Utilities.pxFromDp(inv.hotseatIconSize, dm) * scale); 209 210 // Search Bar 211 normalSearchBarSpaceHeightPx = res.getDimensionPixelSize( 212 R.dimen.dynamic_grid_search_bar_height); 213 tallSearchBarSpaceHeightPx = res.getDimensionPixelSize( 214 R.dimen.dynamic_grid_search_bar_height_tall); 215 searchBarWidgetInternalPaddingTop = res.getDimensionPixelSize( 216 R.dimen.qsb_internal_padding_top); 217 searchBarWidgetInternalPaddingBottom = res.getDimensionPixelSize( 218 R.dimen.qsb_internal_padding_bottom); 219 if (isTablet && !isVerticalBarLayout()) { 220 searchBarTopPaddingPx = searchBarWidgetInternalPaddingTop; 221 normalSearchBarBottomPaddingPx = searchBarWidgetInternalPaddingBottom + 222 res.getDimensionPixelSize(R.dimen.dynamic_grid_search_bar_bottom_padding_tablet); 223 tallSearchBarBottomPaddingPx = normalSearchBarBottomPaddingPx; 224 } else { 225 searchBarTopPaddingPx = searchBarWidgetInternalPaddingTop; 226 normalSearchBarBottomPaddingPx = searchBarWidgetInternalPaddingBottom + 227 res.getDimensionPixelSize(R.dimen.dynamic_grid_search_bar_bottom_padding); 228 tallSearchBarBottomPaddingPx = searchBarWidgetInternalPaddingBottom + 229 res.getDimensionPixelSize(R.dimen.dynamic_grid_search_bar_bottom_padding_short); 230 } 231 232 // Calculate the actual text height 233 Paint textPaint = new Paint(); 234 textPaint.setTextSize(iconTextSizePx); 235 FontMetrics fm = textPaint.getFontMetrics(); 236 cellWidthPx = iconSizePx; 237 cellHeightPx = iconSizePx + iconDrawablePaddingPx + (int) Math.ceil(fm.bottom - fm.top); 238 final float scaleDps = res.getDimensionPixelSize(R.dimen.dragViewScale); 239 dragViewScale = (iconSizePx + scaleDps) / iconSizePx; 240 241 // Hotseat 242 normalHotseatBarHeightPx = iconSizePx + 4 * edgeMarginPx; 243 shortHotseatBarHeightPx = iconSizePx + 2 * edgeMarginPx; 244 hotseatCellWidthPx = iconSizePx; 245 hotseatCellHeightPx = iconSizePx; 246 247 // Folder 248 int folderCellPadding = isTablet || isLandscape ? 6 * edgeMarginPx : 3 * edgeMarginPx; 249 // Don't let the folder get too close to the edges of the screen. 250 folderCellWidthPx = Math.min(cellWidthPx + folderCellPadding, 251 (availableWidthPx - 4 * edgeMarginPx) / inv.numFolderColumns); 252 folderCellHeightPx = cellHeightPx + edgeMarginPx; 253 folderBackgroundOffset = -edgeMarginPx; 254 folderIconSizePx = iconSizePx + 2 * -folderBackgroundOffset; 255 } 256 257 /** 258 * @param recyclerViewWidth the available width of the AllAppsRecyclerView 259 */ 260 public void updateAppsViewNumCols(Resources res, int recyclerViewWidth) { 261 int appsViewLeftMarginPx = 262 res.getDimensionPixelSize(R.dimen.all_apps_grid_view_start_margin); 263 int allAppsCellWidthGap = 264 res.getDimensionPixelSize(R.dimen.all_apps_icon_width_gap); 265 int availableAppsWidthPx = (recyclerViewWidth > 0) ? recyclerViewWidth : availableWidthPx; 266 int numAppsCols = (availableAppsWidthPx - appsViewLeftMarginPx) / 267 (allAppsIconSizePx + allAppsCellWidthGap); 268 int numPredictiveAppCols = Math.max(inv.minAllAppsPredictionColumns, numAppsCols); 269 allAppsNumCols = numAppsCols; 270 allAppsNumPredictiveCols = numPredictiveAppCols; 271 } 272 273 /** Returns the amount of extra space to allocate to the search bar for vertical padding. */ 274 private int getSearchBarTotalVerticalPadding() { 275 return searchBarTopPaddingPx + searchBarBottomPaddingPx; 276 } 277 278 /** Returns the width and height of the search bar, ignoring any padding. */ 279 public Point getSearchBarDimensForWidgetOpts(Resources res) { 280 Rect searchBarBounds = getSearchBarBounds(Utilities.isRtl(res)); 281 if (isVerticalBarLayout()) { 282 return new Point(searchBarBounds.width(), searchBarBounds.height()); 283 } 284 int widgetInternalPadding = searchBarWidgetInternalPaddingTop + 285 searchBarWidgetInternalPaddingBottom; 286 return new Point(searchBarBounds.width(), searchBarSpaceHeightPx + widgetInternalPadding); 287 } 288 289 /** Returns the search bar bounds in the current orientation */ 290 public Rect getSearchBarBounds(boolean isLayoutRtl) { 291 Rect bounds = new Rect(); 292 if (isVerticalBarLayout()) { 293 if (isLayoutRtl) { 294 bounds.set(availableWidthPx - normalSearchBarSpaceHeightPx, edgeMarginPx, 295 availableWidthPx, availableHeightPx - edgeMarginPx); 296 } else { 297 bounds.set(0, edgeMarginPx, normalSearchBarSpaceHeightPx, 298 availableHeightPx - edgeMarginPx); 299 } 300 } else { 301 int boundsBottom = searchBarSpaceHeightPx + getSearchBarTotalVerticalPadding(); 302 if (isTablet) { 303 // Pad the left and right of the workspace to ensure consistent spacing 304 // between all icons 305 int width = getCurrentWidth(); 306 // XXX: If the icon size changes across orientations, we will have to take 307 // that into account here too. 308 int gap = (int) ((width - 2 * edgeMarginPx - 309 (inv.numColumns * cellWidthPx)) / (2 * (inv.numColumns + 1))); 310 bounds.set(edgeMarginPx + gap, 0, 311 availableWidthPx - (edgeMarginPx + gap), boundsBottom); 312 } else { 313 bounds.set(desiredWorkspaceLeftRightMarginPx - defaultWidgetPadding.left, 314 0, 315 availableWidthPx - (desiredWorkspaceLeftRightMarginPx - 316 defaultWidgetPadding.right), boundsBottom); 317 } 318 } 319 return bounds; 320 } 321 322 /** Returns the workspace padding in the specified orientation */ 323 Rect getWorkspacePadding(boolean isLayoutRtl) { 324 Rect searchBarBounds = getSearchBarBounds(isLayoutRtl); 325 Rect padding = new Rect(); 326 if (isVerticalBarLayout()) { 327 // Pad the left and right of the workspace with search/hotseat bar sizes 328 if (isLayoutRtl) { 329 padding.set(normalHotseatBarHeightPx, edgeMarginPx, 330 searchBarBounds.width(), edgeMarginPx); 331 } else { 332 padding.set(searchBarBounds.width(), edgeMarginPx, 333 normalHotseatBarHeightPx, edgeMarginPx); 334 } 335 } else { 336 int paddingTop = searchBarBounds.bottom; 337 int paddingBottom = hotseatBarHeightPx + pageIndicatorHeightPx; 338 if (isTablet) { 339 // Pad the left and right of the workspace to ensure consistent spacing 340 // between all icons 341 float gapScale = 1f + (dragViewScale - 1f) / 2f; 342 int width = getCurrentWidth(); 343 int height = getCurrentHeight(); 344 // The amount of screen space available for left/right padding. 345 int availablePaddingX = Math.max(0, width - (int) ((inv.numColumns * cellWidthPx) + 346 ((inv.numColumns - 1) * gapScale * cellWidthPx))); 347 availablePaddingX = (int) Math.min(availablePaddingX, 348 width * MAX_HORIZONTAL_PADDING_PERCENT); 349 int availablePaddingY = Math.max(0, height - paddingTop - paddingBottom 350 - (int) (2 * inv.numRows * cellHeightPx)); 351 padding.set(availablePaddingX / 2, paddingTop + availablePaddingY / 2, 352 availablePaddingX / 2, paddingBottom + availablePaddingY / 2); 353 } else { 354 // Pad the top and bottom of the workspace with search/hotseat bar sizes 355 padding.set(desiredWorkspaceLeftRightMarginPx - defaultWidgetPadding.left, 356 paddingTop, 357 desiredWorkspaceLeftRightMarginPx - defaultWidgetPadding.right, 358 paddingBottom); 359 } 360 } 361 return padding; 362 } 363 364 private int getWorkspacePageSpacing(boolean isLayoutRtl) { 365 if (isVerticalBarLayout() || isLargeTablet) { 366 // In landscape mode the page spacing is set to the default. 367 return defaultPageSpacingPx; 368 } else { 369 // In portrait, we want the pages spaced such that there is no 370 // overhang of the previous / next page into the current page viewport. 371 // We assume symmetrical padding in portrait mode. 372 return Math.max(defaultPageSpacingPx, 2 * getWorkspacePadding(isLayoutRtl).left); 373 } 374 } 375 376 int getOverviewModeButtonBarHeight() { 377 int zoneHeight = (int) (overviewModeIconZoneRatio * availableHeightPx); 378 zoneHeight = Math.min(overviewModeMaxIconZoneHeightPx, 379 Math.max(overviewModeMinIconZoneHeightPx, zoneHeight)); 380 return zoneHeight; 381 } 382 383 // The rect returned will be extended to below the system ui that covers the workspace 384 Rect getHotseatRect() { 385 if (isVerticalBarLayout()) { 386 return new Rect(availableWidthPx - normalHotseatBarHeightPx, 0, 387 Integer.MAX_VALUE, availableHeightPx); 388 } else { 389 return new Rect(0, availableHeightPx - hotseatBarHeightPx, 390 availableWidthPx, Integer.MAX_VALUE); 391 } 392 } 393 394 public static int calculateCellWidth(int width, int countX) { 395 return width / countX; 396 } 397 public static int calculateCellHeight(int height, int countY) { 398 return height / countY; 399 } 400 401 /** 402 * When {@code true}, the device is in landscape mode and the hotseat is on the right column. 403 * When {@code false}, either device is in portrait mode or the device is in landscape mode and 404 * the hotseat is on the bottom row. 405 */ 406 boolean isVerticalBarLayout() { 407 return isLandscape && transposeLayoutWithOrientation; 408 } 409 410 boolean shouldFadeAdjacentWorkspaceScreens() { 411 return isVerticalBarLayout() || isLargeTablet; 412 } 413 414 private int getVisibleChildCount(ViewGroup parent) { 415 int visibleChildren = 0; 416 for (int i = 0; i < parent.getChildCount(); i++) { 417 if (parent.getChildAt(i).getVisibility() != View.GONE) { 418 visibleChildren++; 419 } 420 } 421 return visibleChildren; 422 } 423 424 // TODO(twickham): b/25154513 425 public void setSearchBarHeight(int searchBarHeight) { 426 if (searchBarHeight == LauncherCallbacks.SEARCH_BAR_HEIGHT_TALL) { 427 hotseatBarHeightPx = shortHotseatBarHeightPx; 428 searchBarSpaceHeightPx = tallSearchBarSpaceHeightPx; 429 searchBarBottomPaddingPx = tallSearchBarBottomPaddingPx; 430 } else { 431 hotseatBarHeightPx = normalHotseatBarHeightPx; 432 searchBarSpaceHeightPx = normalSearchBarSpaceHeightPx; 433 searchBarBottomPaddingPx = normalSearchBarBottomPaddingPx; 434 } 435 } 436 437 public void layout(Launcher launcher) { 438 FrameLayout.LayoutParams lp; 439 boolean hasVerticalBarLayout = isVerticalBarLayout(); 440 final boolean isLayoutRtl = Utilities.isRtl(launcher.getResources()); 441 442 // Layout the search bar space 443 Rect searchBarBounds = getSearchBarBounds(isLayoutRtl); 444 View searchBar = launcher.getSearchDropTargetBar(); 445 lp = (FrameLayout.LayoutParams) searchBar.getLayoutParams(); 446 lp.width = searchBarBounds.width(); 447 lp.height = searchBarBounds.height(); 448 if (hasVerticalBarLayout) { 449 // Vertical search bar space -- The search bar is fixed in the layout to be on the left 450 // of the screen regardless of RTL 451 lp.gravity = Gravity.LEFT; 452 453 LinearLayout targets = (LinearLayout) searchBar.findViewById(R.id.drag_target_bar); 454 targets.setOrientation(LinearLayout.VERTICAL); 455 FrameLayout.LayoutParams targetsLp = (FrameLayout.LayoutParams) targets.getLayoutParams(); 456 targetsLp.gravity = Gravity.TOP; 457 targetsLp.height = LayoutParams.WRAP_CONTENT; 458 459 } else { 460 // Horizontal search bar space 461 lp.gravity = Gravity.TOP|Gravity.CENTER_HORIZONTAL; 462 } 463 searchBar.setLayoutParams(lp); 464 465 // Layout the workspace 466 PagedView workspace = (PagedView) launcher.findViewById(R.id.workspace); 467 lp = (FrameLayout.LayoutParams) workspace.getLayoutParams(); 468 lp.gravity = Gravity.CENTER; 469 Rect padding = getWorkspacePadding(isLayoutRtl); 470 workspace.setLayoutParams(lp); 471 workspace.setPadding(padding.left, padding.top, padding.right, padding.bottom); 472 workspace.setPageSpacing(getWorkspacePageSpacing(isLayoutRtl)); 473 474 // Layout the hotseat 475 View hotseat = launcher.findViewById(R.id.hotseat); 476 lp = (FrameLayout.LayoutParams) hotseat.getLayoutParams(); 477 // We want the edges of the hotseat to line up with the edges of the workspace, but the 478 // icons in the hotseat are a different size, and so don't line up perfectly. To account for 479 // this, we pad the left and right of the hotseat with half of the difference of a workspace 480 // cell vs a hotseat cell. 481 float workspaceCellWidth = (float) getCurrentWidth() / inv.numColumns; 482 float hotseatCellWidth = (float) getCurrentWidth() / inv.numHotseatIcons; 483 int hotseatAdjustment = Math.round((workspaceCellWidth - hotseatCellWidth) / 2); 484 if (hasVerticalBarLayout) { 485 // Vertical hotseat -- The hotseat is fixed in the layout to be on the right of the 486 // screen regardless of RTL 487 lp.gravity = Gravity.RIGHT; 488 lp.width = normalHotseatBarHeightPx; 489 lp.height = LayoutParams.MATCH_PARENT; 490 hotseat.findViewById(R.id.layout).setPadding(0, 2 * edgeMarginPx, 0, 2 * edgeMarginPx); 491 } else if (isTablet) { 492 // Pad the hotseat with the workspace padding calculated above 493 lp.gravity = Gravity.BOTTOM; 494 lp.width = LayoutParams.MATCH_PARENT; 495 lp.height = hotseatBarHeightPx; 496 hotseat.findViewById(R.id.layout).setPadding( 497 hotseatAdjustment + padding.left, 0, 498 hotseatAdjustment + padding.right, 2 * edgeMarginPx); 499 } else { 500 // For phones, layout the hotseat without any bottom margin 501 // to ensure that we have space for the folders 502 lp.gravity = Gravity.BOTTOM; 503 lp.width = LayoutParams.MATCH_PARENT; 504 lp.height = hotseatBarHeightPx; 505 hotseat.findViewById(R.id.layout).setPadding( 506 hotseatAdjustment + padding.left, 0, 507 hotseatAdjustment + padding.right, 0); 508 } 509 hotseat.setLayoutParams(lp); 510 511 // Layout the page indicators 512 View pageIndicator = launcher.findViewById(R.id.page_indicator); 513 if (pageIndicator != null) { 514 if (hasVerticalBarLayout) { 515 // Hide the page indicators when we have vertical search/hotseat 516 pageIndicator.setVisibility(View.GONE); 517 } else { 518 // Put the page indicators above the hotseat 519 lp = (FrameLayout.LayoutParams) pageIndicator.getLayoutParams(); 520 lp.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM; 521 lp.width = LayoutParams.WRAP_CONTENT; 522 lp.height = LayoutParams.WRAP_CONTENT; 523 lp.bottomMargin = hotseatBarHeightPx; 524 pageIndicator.setLayoutParams(lp); 525 } 526 } 527 528 // Layout the Overview Mode 529 ViewGroup overviewMode = launcher.getOverviewPanel(); 530 if (overviewMode != null) { 531 int overviewButtonBarHeight = getOverviewModeButtonBarHeight(); 532 lp = (FrameLayout.LayoutParams) overviewMode.getLayoutParams(); 533 lp.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM; 534 535 int visibleChildCount = getVisibleChildCount(overviewMode); 536 int totalItemWidth = visibleChildCount * overviewModeBarItemWidthPx; 537 int maxWidth = totalItemWidth + (visibleChildCount-1) * overviewModeBarSpacerWidthPx; 538 539 lp.width = Math.min(availableWidthPx, maxWidth); 540 lp.height = overviewButtonBarHeight; 541 overviewMode.setLayoutParams(lp); 542 543 if (lp.width > totalItemWidth && visibleChildCount > 1) { 544 // We have enough space. Lets add some margin too. 545 int margin = (lp.width - totalItemWidth) / (visibleChildCount-1); 546 View lastChild = null; 547 548 // Set margin of all visible children except the last visible child 549 for (int i = 0; i < visibleChildCount; i++) { 550 if (lastChild != null) { 551 MarginLayoutParams clp = (MarginLayoutParams) lastChild.getLayoutParams(); 552 if (isLayoutRtl) { 553 clp.leftMargin = margin; 554 } else { 555 clp.rightMargin = margin; 556 } 557 lastChild.setLayoutParams(clp); 558 lastChild = null; 559 } 560 View thisChild = overviewMode.getChildAt(i); 561 if (thisChild.getVisibility() != View.GONE) { 562 lastChild = thisChild; 563 } 564 } 565 } 566 } 567 } 568 569 private int getCurrentWidth() { 570 return isLandscape 571 ? Math.max(widthPx, heightPx) 572 : Math.min(widthPx, heightPx); 573 } 574 575 private int getCurrentHeight() { 576 return isLandscape 577 ? Math.min(widthPx, heightPx) 578 : Math.max(widthPx, heightPx); 579 } 580} 581