View: move BAffineTransform out of ViewSetStateInfo.

the size of BAffineTransform is architecture dependent, so we transmit
its contents in a standard array instead.

Change-Id: I907110742168846a869a48bb2d116cc5292ec7d0

headers/private/app/ServerProtocolStructs.h

@@ -26,7 +26,6 @@ struct ViewSetStateInfo {
 	drawing_mode				drawingMode;
 	BPoint						origin;
 	float						scale;
-	BAffineTransform			transform;
 	join_mode					lineJoin;
 	cap_mode					lineCap;
 	float						miterLimit;

src/kits/interface/View.cpp

@@ -237,7 +237,6 @@ ViewState::UpdateServerState(BPrivate::PortLink &link)
 	info.drawingMode = drawing_mode;
 	info.origin = origin;
 	info.scale = scale;
-	info.transform = transform;
 	info.lineJoin = line_join;
 	info.lineCap = line_cap;
 	info.miterLimit = miter_limit;
@@ -247,6 +246,12 @@ ViewState::UpdateServerState(BPrivate::PortLink &link)
 	info.fontAntialiasing = font_aliasing;
 	link.Attach<ViewSetStateInfo>(info);
 
+	// BAffineTransform is transmitted as a double array
+	double _transform[6];
+	if (transform.Flatten(_transform, sizeof(_transform)) != B_OK)
+		return;
+	link.Attach<double[6]>(_transform);
+
 	// we send the 'local' clipping region... if we have one...
 	// TODO: Could be optimized, but is low prio, since most views won't
 	// have a custom clipping region.
@@ -302,7 +307,6 @@ ViewState::UpdateFrom(BPrivate::PortLink &link)
 	drawing_mode = info.viewStateInfo.drawingMode;
 	origin = info.viewStateInfo.origin;
 	scale = info.viewStateInfo.scale;
-	transform = info.viewStateInfo.transform;
 	line_join = info.viewStateInfo.lineJoin;
 	line_cap = info.viewStateInfo.lineCap;
 	miter_limit = info.viewStateInfo.miterLimit;
@@ -311,6 +315,14 @@ ViewState::UpdateFrom(BPrivate::PortLink &link)
 	alpha_function_mode = info.viewStateInfo.alphaFunctionMode;
 	font_aliasing = info.viewStateInfo.fontAntialiasing;
 
+	// BAffineTransform is transmitted as a double array
+	double _transform[6];
+	link.Read<double[6]>(&_transform);
+	if (transform.Unflatten(B_AFFINE_TRANSFORM_TYPE, _transform,
+		sizeof(_transform)) != B_OK) {
+		return;
+	}
+
 	// read the user clipping
 	// (that's NOT the current View visible clipping but the additional
 	// user specified clipping!)

src/servers/app/DrawState.cpp

@@ -223,6 +223,14 @@ DrawState::ReadFromLink(BPrivate::LinkReceiver& link)
 
 	link.Read<ViewSetStateInfo>(&info);
 
+	// BAffineTransform is transmitted as a double array
+	double transform[6];
+	link.Read<double[6]>(&transform);
+	if (fTransform.Unflatten(B_AFFINE_TRANSFORM_TYPE, transform,
+		sizeof(transform)) != B_OK) {
+		return;
+	}
+
 	fPenLocation = info.penLocation;
 	fPenSize = info.penSize;
 	fHighColor = info.highColor;
@@ -235,7 +243,6 @@ DrawState::ReadFromLink(BPrivate::LinkReceiver& link)
 	fDrawingMode = info.drawingMode;
 	fOrigin = info.origin;
 	fScale = info.scale;
-	fTransform = info.transform;
 	fLineJoinMode = info.lineJoin;
 	fLineCapMode = info.lineCap;
 	fMiterLimit = info.miterLimit;
@@ -304,7 +311,6 @@ DrawState::WriteToLink(BPrivate::LinkSender& link) const
 	info.viewStateInfo.drawingMode = fDrawingMode;
 	info.viewStateInfo.origin = fOrigin;
 	info.viewStateInfo.scale = fScale;
-	info.viewStateInfo.transform = fTransform;
 	info.viewStateInfo.lineJoin = fLineJoinMode;
 	info.viewStateInfo.lineCap = fLineCapMode;
 	info.viewStateInfo.miterLimit = fMiterLimit;
@@ -316,6 +322,11 @@ DrawState::WriteToLink(BPrivate::LinkSender& link) const
 
 	link.Attach<ViewGetStateInfo>(info);
 
+	// BAffineTransform is transmitted as a double array
+	double transform[6];
+	if (fTransform.Flatten(transform, sizeof(transform)) != B_OK)
+		return;
+	link.Attach<double[6]>(transform);
 
 	// TODO: Could be optimized, but is low prio, since most views do not
 	// use a custom clipping region...