SurfaceFlinger Input: Correct screen magnification.
We need to pass the computed scaling factors through SurfaceFlinger
as well as appropriately scaling the touchable region. We also need
to be careful as to which axes we scale. In the past screen magnification
has not lead to scaling of the TOUCH_MAJOR/MINOR axes, whereas whole-screen
display compatibility scaling has. We preserve this behavior by differentiating
between the global scale and a scale on any particular window. The window scale
works like the global scale used to and the global scale is only used for additional
scaling of the MAJOR/MINOR axes.
Bug: 80101428
Bug: 113136004
Bug: 111440400
Change-Id: I97d809826f86b452f28443cb1046e8bfef1bbf9d
diff --git a/services/inputflinger/InputDispatcher.cpp b/services/inputflinger/InputDispatcher.cpp
index 93a8ac0..bea4f91 100644
--- a/services/inputflinger/InputDispatcher.cpp
+++ b/services/inputflinger/InputDispatcher.cpp
@@ -1671,7 +1671,9 @@
target.flags = targetFlags;
target.xOffset = - windowInfo->frameLeft;
target.yOffset = - windowInfo->frameTop;
- target.scaleFactor = windowInfo->scaleFactor;
+ target.globalScaleFactor = windowInfo->globalScaleFactor;
+ target.windowXScale = windowInfo->windowXScale;
+ target.windowYScale = windowInfo->windowYScale;
target.pointerIds = pointerIds;
}
@@ -1692,7 +1694,7 @@
target.xOffset = 0;
target.yOffset = 0;
target.pointerIds.clear();
- target.scaleFactor = 1.0f;
+ target.globalScaleFactor = 1.0f;
}
} else {
// If there is no monitor channel registered or all monitor channel unregistered,
@@ -1912,11 +1914,13 @@
const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget) {
#if DEBUG_DISPATCH_CYCLE
ALOGD("channel '%s' ~ prepareDispatchCycle - flags=0x%08x, "
- "xOffset=%f, yOffset=%f, scaleFactor=%f, "
- "pointerIds=0x%x",
+ "xOffset=%f, yOffset=%f, globalScaleFactor=%f, "
+ "windowScaleFactor=(%f, %f), pointerIds=0x%x",
connection->getInputChannelName().c_str(), inputTarget->flags,
inputTarget->xOffset, inputTarget->yOffset,
- inputTarget->scaleFactor, inputTarget->pointerIds.value);
+ inputTarget->globalScaleFactor,
+ inputTarget->windowXScale, inputTarget->windowYScale,
+ inputTarget->pointerIds.value);
#endif
// Skip this event if the connection status is not normal.
@@ -1993,7 +1997,8 @@
// Enqueue a new dispatch entry onto the outbound queue for this connection.
DispatchEntry* dispatchEntry = new DispatchEntry(eventEntry, // increments ref
inputTargetFlags, inputTarget->xOffset, inputTarget->yOffset,
- inputTarget->scaleFactor);
+ inputTarget->globalScaleFactor, inputTarget->windowXScale,
+ inputTarget->windowYScale);
// Apply target flags and update the connection's input state.
switch (eventEntry->type) {
@@ -2109,13 +2114,15 @@
float xOffset, yOffset;
if ((motionEntry->source & AINPUT_SOURCE_CLASS_POINTER)
&& !(dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS)) {
- float scaleFactor = dispatchEntry->scaleFactor;
- xOffset = dispatchEntry->xOffset * scaleFactor;
- yOffset = dispatchEntry->yOffset * scaleFactor;
- if (scaleFactor != 1.0f) {
+ float globalScaleFactor = dispatchEntry->globalScaleFactor;
+ float wxs = dispatchEntry->windowXScale;
+ float wys = dispatchEntry->windowYScale;
+ xOffset = dispatchEntry->xOffset * wxs;
+ yOffset = dispatchEntry->yOffset * wys;
+ if (wxs != 1.0f || wys != 1.0f || globalScaleFactor != 1.0f) {
for (uint32_t i = 0; i < motionEntry->pointerCount; i++) {
scaledCoords[i] = motionEntry->pointerCoords[i];
- scaledCoords[i].scale(scaleFactor);
+ scaledCoords[i].scale(globalScaleFactor, wxs, wys);
}
usingCoords = scaledCoords;
}
@@ -2373,11 +2380,13 @@
const InputWindowInfo* windowInfo = windowHandle->getInfo();
target.xOffset = -windowInfo->frameLeft;
target.yOffset = -windowInfo->frameTop;
- target.scaleFactor = windowInfo->scaleFactor;
+ target.globalScaleFactor = windowInfo->globalScaleFactor;
+ target.windowXScale = windowInfo->windowXScale;
+ target.windowYScale = windowInfo->windowYScale;
} else {
target.xOffset = 0;
target.yOffset = 0;
- target.scaleFactor = 1.0f;
+ target.globalScaleFactor = 1.0f;
}
target.inputChannel = connection->inputChannel;
target.flags = InputTarget::FLAG_DISPATCH_AS_IS;
@@ -3509,7 +3518,7 @@
dump += StringPrintf(INDENT3 "%zu: name='%s', displayId=%d, "
"paused=%s, hasFocus=%s, hasWallpaper=%s, "
"visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, "
- "frame=[%d,%d][%d,%d], scale=%f, "
+ "frame=[%d,%d][%d,%d], globalScale=%f, windowScale=%f,%f"
"touchableRegion=",
i, windowInfo->name.c_str(), windowInfo->displayId,
toString(windowInfo->paused),
@@ -3521,7 +3530,8 @@
windowInfo->layer,
windowInfo->frameLeft, windowInfo->frameTop,
windowInfo->frameRight, windowInfo->frameBottom,
- windowInfo->scaleFactor);
+ windowInfo->globalScaleFactor,
+ windowInfo->windowXScale, windowInfo->windowYScale);
dumpRegion(dump, windowInfo->touchableRegion);
dump += StringPrintf(", inputFeatures=0x%08x", windowInfo->inputFeatures);
dump += StringPrintf(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n",
@@ -4383,10 +4393,12 @@
volatile int32_t InputDispatcher::DispatchEntry::sNextSeqAtomic;
InputDispatcher::DispatchEntry::DispatchEntry(EventEntry* eventEntry,
- int32_t targetFlags, float xOffset, float yOffset, float scaleFactor) :
+ int32_t targetFlags, float xOffset, float yOffset, float globalScaleFactor,
+ float windowXScale, float windowYScale) :
seq(nextSeq()),
eventEntry(eventEntry), targetFlags(targetFlags),
- xOffset(xOffset), yOffset(yOffset), scaleFactor(scaleFactor),
+ xOffset(xOffset), yOffset(yOffset), globalScaleFactor(globalScaleFactor),
+ windowXScale(windowXScale), windowYScale(windowYScale),
deliveryTime(0), resolvedAction(0), resolvedFlags(0) {
eventEntry->refCount += 1;
}