BPicture: fix clipping region storage

Part of #1133.

Change-Id: I0d727056dd7302f5a320987b83a27c9571e9684f
Reviewed-on: https://review.haiku-os.org/c/haiku/+/9609
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: waddlesplash <[email protected]>

headers/private/interface/PicturePlayer.h

@@ -18,6 +18,7 @@
 #include <InterfaceDefs.h>
 #include <Point.h>
 #include <Rect.h>
+#include <Region.h>
 
 
 class BAffineTransform;
@@ -52,7 +53,7 @@ struct picture_player_callbacks {
 		const void* data, size_t length);
 	void (*draw_picture)(void* userData, const BPoint& where, int32 token);
 	void (*set_clipping_rects)(void* userData, size_t numRects,
-		const BRect rects[]);
+		const clipping_rect rects[]);
 	void (*clip_to_picture)(void* userData, int32 token,
 		const BPoint& where, bool clipToInverse);
 	void (*push_state)(void* userData);

src/kits/interface/PictureDataWriter.cpp

@@ -301,18 +301,14 @@ PictureDataWriter::WriteClipToPicture(int32 pictureToken,
 status_t
 PictureDataWriter::WriteSetClipping(const BRegion& region)
 {
-	// TODO: I don't know if it's compatible with R5's BPicture version
 	try {
+		BeginOp(B_PIC_SET_CLIPPING_RECTS);
+		Write<clipping_rect>(region.FrameInt());
 		const int32 numRects = region.CountRects();
-		if (numRects > 0 && region.Frame().IsValid()) {
-			BeginOp(B_PIC_SET_CLIPPING_RECTS);
-			Write<uint32>(numRects);
-			for (int32 i = 0; i < numRects; i++)
-				Write<BRect>(region.RectAt(i));
+		for (int32 i = 0; i < numRects; i++)
+			Write<clipping_rect>(region.RectAtInt(i));
 
-			EndOp();
-		} else
-			WriteClearClipping();
+		EndOp();
 	} catch (status_t& status) {
 		return status;
 	}

src/kits/interface/PicturePlayer.cpp

@@ -186,7 +186,7 @@ draw_picture(void* _context, const BPoint& where, int32 token)
 
 
 static void
-set_clipping_rects(void* _context, size_t numRects, const BRect _rects[])
+set_clipping_rects(void* _context, size_t numRects, const clipping_rect _rects[])
 {
 	adapter_context* context = reinterpret_cast<adapter_context*>(_context);
 
@@ -195,7 +195,10 @@ set_clipping_rects(void* _context, size_t numRects, const BRect _rects[])
 	if (!rects.IsValid())
 		return;
 
-	memcpy((void*)rects, _rects, numRects * sizeof(BRect));
+	for (size_t i = 0; i < numRects; i++) {
+		clipping_rect srcRect = _rects[i];
+		rects[i] = BRect(srcRect.left, srcRect.top, srcRect.right, srcRect.bottom);
+	}
 
 	((void (*)(void*, BRect*, uint32))context->function_table[20])(
 		context->user_data, rects, numRects);
@@ -1278,14 +1281,20 @@ PicturePlayer::_Play(const picture_player_callbacks& callbacks, void* userData,
 
 			case B_PIC_SET_CLIPPING_RECTS:
 			{
-				const uint32* numRects;
-				const BRect* rects;
-				if (callbacks.set_clipping_rects == NULL
-					|| !reader.Get(numRects) || !reader.Get(rects, *numRects)) {
+				if (callbacks.set_clipping_rects == NULL)
 					break;
-				}
 
-				callbacks.set_clipping_rects(userData, *numRects, rects);
+				const clipping_rect* frame;
+				if (!reader.Get(frame))
+					break;
+
+				uint32 numRects = reader.Remaining() / sizeof(clipping_rect);
+
+				const clipping_rect* rects;
+				if (!reader.Get(rects, numRects))
+					break;
+
+				callbacks.set_clipping_rects(userData, numRects, rects);
 				break;
 			}
 

src/servers/app/PictureBoundingBoxPlayer.cpp

@@ -447,7 +447,7 @@ draw_picture(void* _state, const BPoint& where, int32 token)
 
 
 static void
-set_clipping_rects(void* _state, size_t numRects, const BRect rects[])
+set_clipping_rects(void* _state, size_t numRects, const clipping_rect rects[])
 {
 	TRACE_BB("%p cliping rects (%ld rects)\n", _state, numRects);
 

src/servers/app/ServerPicture.cpp

@@ -599,7 +599,7 @@ draw_picture(void* _canvas, const BPoint& where, int32 token)
 
 
 static void
-set_clipping_rects(void* _canvas, size_t numRects, const BRect rects[])
+set_clipping_rects(void* _canvas, size_t numRects, const clipping_rect rects[])
 {
 	Canvas* const canvas = reinterpret_cast<Canvas*>(_canvas);