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Improve previews display and allow to jump directly to any screen.

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Change-Id: I87e7a6a53f286ab7a04657e1598a947f9302e2a1
This commit is contained in:
Romain Guy
2009-11-10 02:54:41 -08:00
parent 1a304a1198
commit a6abce8464
2 changed files with 111 additions and 55 deletions
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src/com/android/launcher2/CellLayout.java
+6
View File
@@ -21,6 +21,7 @@ import android.content.res.TypedArray;
import android.content.res.Resources;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.ContextMenu;
import android.view.MotionEvent;
@@ -104,6 +105,11 @@ public class CellLayout extends ViewGroup {
mWallpaperManager = WallpaperManager.getInstance(getContext());
}
@Override
public void dispatchDraw(Canvas canvas) {
super.dispatchDraw(canvas);
}
@Override
public void cancelLongPress() {
super.cancelLongPress();
src/com/android/launcher2/Launcher.java
+105 -55
View File
@@ -40,7 +40,7 @@ import android.content.res.Resources;
import android.database.ContentObserver;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.graphics.Matrix;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
@@ -84,7 +84,7 @@ import java.io.DataInputStream;
* Default launcher application.
*/
public final class Launcher extends Activity
implements View.OnClickListener, OnLongClickListener, LauncherModel.Callbacks, View.OnTouchListener, View.OnKeyListener {
implements View.OnClickListener, OnLongClickListener, LauncherModel.Callbacks {
static final String LOG_TAG = "Launcher";
static final String TAG = LOG_TAG;
static final boolean LOGD = false;
@@ -567,11 +567,7 @@ public final class Launcher extends Activity
mWorkspace.setIndicators(previous, next);
mPreviousView.setOnLongClickListener(this);
mPreviousView.setOnTouchListener(this);
mPreviousView.setOnKeyListener(this);
mNextView.setOnLongClickListener(this);
mNextView.setOnTouchListener(this);
mNextView.setOnKeyListener(this);
workspace.setOnLongClickListener(this);
workspace.setDragController(dragController);
@@ -941,7 +937,7 @@ public final class Launcher extends Activity
getContentResolver().unregisterContentObserver(mWidgetObserver);
dismissPreview(mPreviousView);
dismissPreview(mNextView);
dismissPreview(mNextView);
}
@Override
@@ -1333,6 +1329,8 @@ public final class Launcher extends Activity
} else {
closeFolder();
}
dismissPreview(mPreviousView);
dismissPreview(mNextView);
}
return true;
case KeyEvent.KEYCODE_HOME:
@@ -1512,23 +1510,10 @@ public final class Launcher extends Activity
return true;
}
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_UP) {
dismissPreview(v);
}
return false;
}
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
dismissPreview(v);
}
return false;
}
private void dismissPreview(View v) {
PopupWindow window = (PopupWindow) v.getTag();
if (window != null) {
window.setOnDismissListener(null);
window.dismiss();
((ImageView) v.getTag(R.id.workspace)).setImageBitmap(null);
((Bitmap) v.getTag(R.id.icon)).recycle();
@@ -1543,67 +1528,132 @@ public final class Launcher extends Activity
int current = mWorkspace.getCurrentScreen();
if (current <= 0) return;
View previous = mWorkspace.getChildAt(current - 1);
showPreview(anchor, previous);
showPreviews(anchor, 0, current);
}
private void showNextPreview(View anchor) {
int current = mWorkspace.getCurrentScreen();
if (current >= mWorkspace.getChildCount() - 1) return;
View next = mWorkspace.getChildAt(current + 1);
showPreview(anchor, next);
showPreviews(anchor, current + 1, mWorkspace.getChildCount());
}
private void showPreview(View anchor, View source) {
boolean cacheEnabled = source.isDrawingCacheEnabled();
source.setDrawingCacheEnabled(true);
source.buildDrawingCache();
@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
Bitmap cache = source.getDrawingCache();
if (cache == null) return;
int width = cache.getWidth();
int height = cache.getHeight();
float sx = (int) (width / 2.5f) / (float) width;
float sy = (int) (height / 2.5f) / (float) height;
Matrix m = new Matrix();
m.setScale(sx, sy);
CellLayout cell = ((CellLayout) source);
int x = cell.getLeftPadding();
int y = cell.getTopPadding();
width -= (x + cell.getRightPadding());
height -= (y + cell.getBottomPadding());
Bitmap bitmap = Bitmap.createBitmap(cache, x, y, width, height, m, true);
if (!hasFocus) {
dismissPreview(mPreviousView);
dismissPreview(mNextView);
}
}
private void showPreviews(final View anchor, int start, int end) {
ImageView preview = new ImageView(this);
preview.setImageBitmap(bitmap);
preview.requestFocus();
Drawable d = getResources().getDrawable(R.drawable.preview_popup);
preview.setBackgroundDrawable(d);
Rect r = new Rect();
d.getPadding(r);
int extraW = r.left + r.right;
int extraH = r.top + r.bottom;
PopupWindow p = new PopupWindow(preview, bitmap.getWidth() + extraW,
bitmap.getHeight() + extraH);
p.setWindowLayoutMode(ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
Workspace workspace = mWorkspace;
CellLayout cell = ((CellLayout) workspace.getChildAt(start));
float max = workspace.getChildCount() - 1;
int aW = cell.getWidth() - extraW;
float w = aW / max;
int width = cell.getWidth();
int height = cell.getHeight();
int x = cell.getLeftPadding();
int y = cell.getTopPadding();
width -= (x + cell.getRightPadding());
height -= (y + cell.getBottomPadding());
float scale = w / width;
int count = end - start;
final float sWidth = width * scale;
float sHeight = height * scale;
Bitmap bitmap = Bitmap.createBitmap((int) (sWidth * count),
(int) sHeight, Bitmap.Config.ARGB_8888);
PopupWindow p = new PopupWindow(this);
p.setContentView(preview);
p.setWidth(bitmap.getWidth() + extraW);
p.setHeight(bitmap.getHeight() + extraH);
p.setAnimationStyle(R.style.AnimationPreview);
p.setOutsideTouchable(true);
p.setBackgroundDrawable(d);
p.showAsDropDown(anchor, 0, 0);
source.destroyDrawingCache();
if (!cacheEnabled) source.setDrawingCacheEnabled(cacheEnabled);
Canvas c = new Canvas(bitmap);
for (int i = start; i < end; i++) {
cell = (CellLayout) workspace.getChildAt(i);
c.save();
c.scale(scale, scale);
c.translate(-cell.getLeftPadding(), -cell.getTopPadding());
cell.dispatchDraw(c);
c.restore();
c.translate(sWidth, 0.0f);
}
preview.setImageBitmap(bitmap);
PreviewTouchHandler handler = new PreviewTouchHandler(anchor, sWidth);
preview.setOnClickListener(handler);
preview.setOnTouchListener(handler);
p.setOnDismissListener(handler);
anchor.setTag(p);
anchor.setTag(R.id.workspace, preview);
anchor.setTag(R.id.icon, bitmap);
}
class PreviewTouchHandler implements View.OnTouchListener, View.OnClickListener,
PopupWindow.OnDismissListener {
private final View mAnchor;
private final float mWidth;
private float mTouchX;
public PreviewTouchHandler(View anchor, float width) {
mAnchor = anchor;
mWidth = width;
}
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
mTouchX = event.getX();
}
return false;
}
public void onClick(View v) {
int screen = 0;
if (mAnchor == mNextView) {
screen = mWorkspace.getCurrentScreen() + (int) (mTouchX / mWidth) + 1;
} else if (mAnchor == mPreviousView) {
screen = (int) (mTouchX / mWidth);
}
mWorkspace.snapToScreen(screen);
dismissPreview(mAnchor);
}
public void onDismiss() {
dismissPreview(mAnchor);
}
}
View getDrawerHandle() {
return mHandleView;
}