修改Launcher3中的workspace中的应用图标的大小
以下函数是把从数据库中加载的应用的信息绑定到workspace中。
public void bindItems(final ArrayList
final int end, final boolean forceAnimateIcons) {
Runnable r = new Runnable() {
public void run() {
bindItems(shortcuts, start, end, forceAnimateIcons);
}
};
if (waitUntilResume(r)) {
return;
}
// Get the list of added shortcuts and intersect them with the set of
// shortcuts here
final AnimatorSet anim = LauncherAnimUtils.createAnimatorSet();
final Collection
final boolean animateIcons = forceAnimateIcons
&& canRunNewAppsAnimation();
Workspace workspace = mWorkspace;
long newShortcutsScreenId = -1;
for (int i = start; i < end; i++) {
final ItemInfo item = shortcuts.get(i);
// Short circuit if we are loading dock items for a configuration
// which has no dock
if (item.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT
&& mHotseat == null) {
continue;
}
switch (item.itemType) {
case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
ShortcutInfo info = (ShortcutInfo) item;
View shortcut = createShortcut(info);
/*
* TODO: FIX collision case
*/
if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
CellLayout cl = mWorkspace.getScreenWithId(item.screenId);
if (cl != null && cl.isOccupied(item.cellX, item.cellY)) {
throw new RuntimeException("OCCUPIED");
}
}
workspace.addInScreenFromBind(shortcut, item.container,
item.screenId, item.cellX, item.cellY, 1, 1);
if (animateIcons) {
// Animate all the applications up now
shortcut.setAlpha(0f);
shortcut.setScaleX(0f);
shortcut.setScaleY(0f);
bounceAnims.add(createNewAppBounceAnimation(shortcut, i));
newShortcutsScreenId = item.screenId;
}
break;
case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon,
this, (ViewGroup) workspace.getChildAt(workspace
.getCurrentPage()), (FolderInfo) item,
mIconCache);
workspace.addInScreenFromBind(newFolder, item.container,
item.screenId, item.cellX, item.cellY, 1, 1);
break;
default:
throw new RuntimeException("Invalid Item Type");
}
}
if (animateIcons) {
// Animate to the correct page
if (newShortcutsScreenId > -1) {
long currentScreenId = mWorkspace
.getScreenIdForPageIndex(mWorkspace.getNextPage());
final int newScreenIndex = mWorkspace
.getPageIndexForScreenId(newShortcutsScreenId);
final Runnable startBounceAnimRunnable = new Runnable() {
public void run() {
anim.playTogether(bounceAnims);
anim.start();
}
};
if (newShortcutsScreenId != currentScreenId) {
// We post the animation slightly delayed to prevent
// slowdowns
// when we are loading right after we return to launcher.
mWorkspace.postDelayed(new Runnable() {
public void run() {
if (mWorkspace != null) {
mWorkspace.snapToPage(newScreenIndex);
mWorkspace.postDelayed(startBounceAnimRunnable,
NEW_APPS_ANIMATION_DELAY);
}
}
}, NEW_APPS_PAGE_MOVE_DELAY);
} else {
mWorkspace.postDelayed(startBounceAnimRunnable,
NEW_APPS_ANIMATION_DELAY);
}
}
}
workspace.requestLayout();
}
先看其中的：
ShortcutInfo info = (ShortcutInfo) item;
View shortcut = createShortcut(info);
以上代码是根据ShortcutInfo中保存的应用的信息调用createShortcut()函数重新生成一个应用的快捷方式，就是应用图标。
再看createShortcut()函数的实现：
View createShortcut(ShortcutInfo info) {
return createShortcut(R.layout.application,
(ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentPage()),
info);
}
调用以下函数：
View createShortcut(int layoutResId, ViewGroup parent, ShortcutInfo info) {
BubbleTextView favorite = (BubbleTextView) mInflater.inflate(
layoutResId, parent, false);
favorite.applyFromShortcutInfo(info, mIconCache); //创建shortcut
favorite.setOnClickListener(this);
return favorite;
}
再以上的函数中，返回的是一个BubbleTextView类型的View，作为应用的shortcut，调用
该对象的applyFromShortcutInfo（）方法根据ShortcutInfo创建一个新的View。
再看applyFromShortcufInfo（）方法的实现：
public void applyFromShortcutInfo(ShortcutInfo info, IconCache iconCache) {
Bitmap b = info.getIcon(iconCache);
LauncherAppState app = LauncherAppState.getInstance();
DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
setText(info.title);
setTag(info);
mRawIcon = b;
if (info.intent.getComponent() == null) {
setCompoundDrawables(null,
Utilities.createIconDrawable(b), null, null);
setCompoundDrawablePadding(grid.iconDrawablePaddingPx);
return;
}
int cctemp = CornerMarkManager.getInstance(getContext()).getNotificationCount(
info.intent.getComponent().getPackageName());
if (currentCount != cctemp) {
currentCount = cctemp;
FastBitmapDrawable fbd = (FastBitmapDrawable) Utilities.createIconDrawable(mRawIcon, currentCount);
fbd.setRawIcon(mRawIcon);
setCompoundDrawables(null,
fbd, null, null);
}else {
Log.i("Garment16", "111111111111111111111");
setCompoundDrawables(null,
Utilities.createIconDrawable(b), null, null);
setCompoundDrawablePadding(grid.iconDrawablePaddingPx);
}
mCornerMarkMessageReceiver = new CornerMarkMessageReceiver(
CornerMarkManager.getInstance(getContext()),
info.intent.getComponent().getPackageName()) {
@Override
public void onRecieve(int messagecount) {
if (currentCount == messagecount) {
return;
}
currentCount = messagecount;
FastBitmapDrawable fbd = (FastBitmapDrawable) Utilities.createIconDrawable(mRawIcon, currentCount);
fbd.setRawIcon(mRawIcon);
setCompoundDrawables(null,
fbd, null, null);
}
};
}
该函数中setText(info.title)用于Icon的名称，
创建图标的主要的代码是：
setCompoundDrawables(null,Utilities.createIconDrawable(b), null, null);
其中Utilities.createIconDrawable(b)创建一个确定大小的Icon图标，再看createIconDrawable(b)的代码的实现：
static Drawable createIconDrawable(Bitmap icon) {
return createIconDrawableWithRawSize(icon);
}
static Drawable createIconDrawableWithRawSize(Bitmap icon) {
FastBitmapDrawable d = new FastBitmapDrawable(icon);
d.setFilterBitmap(true);
resizeIconDrawable(d);
return d;
}
以上代码的resizeIconDrawable(d)函数用于重新生成大小确定的应用Icon。
再看resizeIconDrawable（）函数的实现：
static void resizeIconDrawable(Drawable icon) {
// icon.setBounds(0, 0, sIconTextureWidth, sIconTextureHeight);
icon.setBounds(0, 0, sIconTextureWidth+56, sIconTextureHeight+56);
}
其中调用setBounds（）函数进行icon的大小的设置，该函数的作用：Specify a bounding rectangle for the Drawable. This is where the drawable will draw when its draw() method is called.
暂时的做法就是直接修改是sIconTextureWidth和sIconTextureHeight的值的大小，达到修改应用Icon的大小的目的。