From b9b320093cdbaaf674830025c1ff95c0f8ae1877 Mon Sep 17 00:00:00 2001
From: Arthur Hung <arthurhung@google.com>
Date: Tue, 18 Dec 2018 17:39:43 +0800
Subject: Support mouse pointer on external displays (2/2)

Limit mouse boundary to one display viewport.
Currently if desktop mode is enable, selects the topmost freeform display,
or find first external display if there is no freeform display.
Return the default display if desktop mode is not enable.

- Add getPointerDisplayId to find the preferred display.
- Limit update viewports from InputReader.
- obtainPointerController would also find the associated display id.
- Reload cursor resources if resolution or display changed.

Bug: 113559891
Test: atest inputfliger_tests
Test: ActivityView test app
Change-Id: Iffd01e27f5010ccfb0481a028658b7290ca6316d
---
 libs/input/SpriteController.cpp | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

(limited to 'libs/input/SpriteController.cpp')

diff --git a/libs/input/SpriteController.cpp b/libs/input/SpriteController.cpp
index eb2bc98ec9e9..c1868d3a94d6 100644
--- a/libs/input/SpriteController.cpp
+++ b/libs/input/SpriteController.cpp
@@ -144,13 +144,16 @@ void SpriteController::doUpdateSprites() {
         }
     }
 
-    // Resize sprites if needed.
+    // Resize and/or reparent sprites if needed.
     SurfaceComposerClient::Transaction t;
     bool needApplyTransaction = false;
     for (size_t i = 0; i < numSprites; i++) {
         SpriteUpdate& update = updates.editItemAt(i);
+        if (update.state.surfaceControl == nullptr) {
+            continue;
+        }
 
-        if (update.state.surfaceControl != NULL && update.state.wantSurfaceVisible()) {
+        if (update.state.wantSurfaceVisible()) {
             int32_t desiredWidth = update.state.icon.bitmap.width();
             int32_t desiredHeight = update.state.icon.bitmap.height();
             if (update.state.surfaceWidth < desiredWidth
@@ -170,6 +173,12 @@ void SpriteController::doUpdateSprites() {
                 }
             }
         }
+
+        // If surface is a new one, we have to set right layer stack.
+        if (update.surfaceChanged || update.state.dirty & DIRTY_DISPLAY_ID) {
+            t.setLayerStack(update.state.surfaceControl, update.state.displayId);
+            needApplyTransaction = true;
+        }
     }
     if (needApplyTransaction) {
         t.apply();
@@ -236,7 +245,7 @@ void SpriteController::doUpdateSprites() {
         if (update.state.surfaceControl != NULL && (becomingVisible || becomingHidden
                 || (wantSurfaceVisibleAndDrawn && (update.state.dirty & (DIRTY_ALPHA
                         | DIRTY_POSITION | DIRTY_TRANSFORMATION_MATRIX | DIRTY_LAYER
-                        | DIRTY_VISIBILITY | DIRTY_HOTSPOT))))) {
+                        | DIRTY_VISIBILITY | DIRTY_HOTSPOT | DIRTY_DISPLAY_ID))))) {
             needApplyTransaction = true;
 
             if (wantSurfaceVisibleAndDrawn
@@ -445,6 +454,15 @@ void SpriteController::SpriteImpl::setTransformationMatrix(
     }
 }
 
+void SpriteController::SpriteImpl::setDisplayId(int32_t displayId) {
+    AutoMutex _l(mController->mLock);
+
+    if (mLocked.state.displayId != displayId) {
+        mLocked.state.displayId = displayId;
+        invalidateLocked(DIRTY_DISPLAY_ID);
+    }
+}
+
 void SpriteController::SpriteImpl::invalidateLocked(uint32_t dirty) {
     bool wasDirty = mLocked.state.dirty;
     mLocked.state.dirty |= dirty;
-- 
cgit v1.2.3-59-g8ed1b