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Add SurfaceView API to put surface on top of window.

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Change-Id: I9db84ee63a362e54ebc2f5b24a20ae5bdc3588bf
This commit is contained in:
Dianne Hackborn
2009-09-14 22:29:14 -07:00
parent d583a015bc
commit 1cd403eaac
2 changed files with 48 additions and 9 deletions
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13
api/current.xml
View File

@@ -150079,6 +150079,19 @@
visibility="public"
>
</method>
<method name="setOnTop"
return="void"
abstract="false"
native="false"
synchronized="false"
static="false"
final="false"
deprecated="not deprecated"
visibility="public"
>
<parameter name="onTop" type="boolean">
</parameter>
</method>
</class>
<class name="TouchDelegate"
extends="java.lang.Object"

44
core/java/android/view/SurfaceView.java
View File

@@ -236,6 +236,10 @@ public class SurfaceView extends View {
@Override
public boolean gatherTransparentRegion(Region region) {
if (mWindowType == WindowManager.LayoutParams.TYPE_APPLICATION_PANEL) {
return super.gatherTransparentRegion(region);
}
boolean opaque = true;
if ((mPrivateFlags & SKIP_DRAW) == 0) {
// this view draws, remove it from the transparent region
@@ -259,20 +263,24 @@ public class SurfaceView extends View {
@Override
public void draw(Canvas canvas) {
// draw() is not called when SKIP_DRAW is set
if ((mPrivateFlags & SKIP_DRAW) == 0) {
// punch a whole in the view-hierarchy below us
canvas.drawColor(0, PorterDuff.Mode.CLEAR);
if (mWindowType != WindowManager.LayoutParams.TYPE_APPLICATION_PANEL) {
// draw() is not called when SKIP_DRAW is set
if ((mPrivateFlags & SKIP_DRAW) == 0) {
// punch a whole in the view-hierarchy below us
canvas.drawColor(0, PorterDuff.Mode.CLEAR);
}
}
super.draw(canvas);
}
@Override
protected void dispatchDraw(Canvas canvas) {
// if SKIP_DRAW is cleared, draw() has already punched a hole
if ((mPrivateFlags & SKIP_DRAW) == SKIP_DRAW) {
// punch a whole in the view-hierarchy below us
canvas.drawColor(0, PorterDuff.Mode.CLEAR);
if (mWindowType != WindowManager.LayoutParams.TYPE_APPLICATION_PANEL) {
// if SKIP_DRAW is cleared, draw() has already punched a hole
if ((mPrivateFlags & SKIP_DRAW) == SKIP_DRAW) {
// punch a whole in the view-hierarchy below us
canvas.drawColor(0, PorterDuff.Mode.CLEAR);
}
}
// reposition ourselves where the surface is
mHaveFrame = true;
@@ -280,6 +288,22 @@ public class SurfaceView extends View {
super.dispatchDraw(canvas);
}
/**
* Control whether the surface view's surface is placed on top of its
* window. Normally it is placed behind the window, to allow it to
* (for the most part) appear to composite with the views in the
* hierarchy. By setting this, you cause it to be placed above the
* window. This means that none of the contents of the window this
* SurfaceView is in will be visible on top of its surface.
*
* <p>Note that this must be set before the surface view's containing
* window is attached to the window manager.
*/
public void setOnTop(boolean onTop) {
mWindowType = onTop ? WindowManager.LayoutParams.TYPE_APPLICATION_PANEL
: WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA;
}
/**
* Hack to allow special layering of windows. The type is one of the
* types in WindowManager.LayoutParams. This is a hack so:
@@ -345,7 +369,9 @@ public class SurfaceView extends View {
}
mLayout.format = mRequestedFormat;
mLayout.flags |=WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
mLayout.flags |=WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
| WindowManager.LayoutParams.FLAG_SCALED
| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE