gdiplus: Add some tests for regions with paths and update a comment.

dlls/gdiplus/region.c

@@ -32,8 +32,7 @@ WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
 
 /**********************************************************
  *
- * Data returned by GdipGetRegionData (for rectangle based regions)
- * looks something like this:
+ * Data returned by GdipGetRegionData looks something like this:
  *
  * struct region_data_header
  * {
@@ -43,7 +42,9 @@ WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
  *   DWORD num_ops;  number of combining ops * 2
  * };
  *
- * Then follows a sequence of combining ops and RECTFs.
+ * Then follows a sequence of combining ops and region elements.
+ *
+ * A region element is either a RECTF or some path data.
  *
  * Combining ops are just stored as their CombineMode value.
  *
@@ -51,19 +52,24 @@ WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
  * stored as 0x10000002 (with no following RECTF) and an infinite rect
  * is stored as 0x10000003 (again with no following RECTF).
  *
- * The combining ops are stored in the reverse order to the RECTFs and in the
- * reverse order to which the region was constructed.
+ * Path data is preceded by the DWORD 0x10000001.  Then follows a
+ * DWORD size and then size bytes of data.
+ *
+ * The combining ops are stored in the reverse order to the region
+ * elements and in the reverse order to which the region was
+ * constructed.
  *
- * When two or more complex regions (ie those with more than one rect)
- * are combined, the combining op for the two regions comes first,
- * then the combining ops for the rects in region 1, followed by the
- * rects for region 1, then follows the combining ops for region 2 and
- * finally region 2's rects.  Presumably you're supposed to use the
- * 0x10000000 rect header to find the end of the op list (the count of
- * the rects in each region is not stored).
+ * When two or more complex regions (ie those with more than one
+ * element) are combined, the combining op for the two regions comes
+ * first, then the combining ops for the region elements in region 1,
+ * followed by the region elements for region 1, then follows the
+ * combining ops for region 2 and finally region 2's region elements.
+ * Presumably you're supposed to use the 0x1000000x header to find the
+ * end of the op list (the count of the elements in each region is not
+ * stored).
  *
- * When a simple region (1 rect) is combined, it's treated as if a single rect
- * is being combined.
+ * When a simple region (1 element) is combined, it's treated as if a
+ * single rect/path is being combined.
  *
  */
 

dlls/gdiplus/tests/region.c

@@ -34,13 +34,14 @@ static inline void expect_float(DWORD *value, FLOAT expected)
     ok(valuef == expected, "expected %f got %f\n", expected, valuef);
 }
 
-static void test_create_rgn(void)
+static void test_getregiondata(void)
 {
     GpStatus status;
     GpRegion *region, *region2;
     UINT needed;
     DWORD buf[100];
     GpRect rect;
+    GpPath *path;
 
     status = GdipCreateRegion(&region);
 todo_wine
@@ -201,6 +202,82 @@ todo_wine
     status = GdipDeleteRegion(region);
     ok(status == Ok, "status %08x\n", status);
 
+    /* Try some paths */
+
+    status = GdipCreatePath(FillModeAlternate, &path);
+    ok(status == Ok, "status %08x\n", status);
+    GdipAddPathRectangle(path, 12.5, 13.0, 14.0, 15.0);
+
+    status = GdipCreateRegionPath(path, &region);
+    ok(status == Ok, "status %08x\n", status);
+    status = GdipGetRegionDataSize(region, &needed);
+    ok(status == Ok, "status %08x\n", status);
+    ok(needed == 72, "got %d\n", needed);
+    status = GdipGetRegionData(region, (BYTE*)buf, sizeof(buf), &needed);
+    ok(status == Ok, "status %08x\n", status);
+    ok(needed == 72, "got %d\n", needed);
+    expect_dword(buf, 64);
+    trace("buf[1] = %08x\n", buf[1]);
+    expect_dword(buf + 2, 0xdbc01001);
+    expect_dword(buf + 3, 0);
+    expect_dword(buf + 4, 0x10000001);
+    expect_dword(buf + 5, 0x00000030);
+    expect_dword(buf + 6, 0xdbc01001);
+    expect_dword(buf + 7, 0x00000004);
+    expect_dword(buf + 8, 0x00000000);
+    expect_float(buf + 9, 12.5);
+    expect_float(buf + 10, 13.0);
+    expect_float(buf + 11, 26.5);
+    expect_float(buf + 12, 13.0);
+    expect_float(buf + 13, 26.5);
+    expect_float(buf + 14, 28.0);
+    expect_float(buf + 15, 12.5);
+    expect_float(buf + 16, 28.0);
+    expect_dword(buf + 17, 0x81010100);
+
+
+    rect.X = 50;
+    rect.Y = 30;
+    rect.Width = 10;
+    rect.Height = 20;
+    status = GdipCombineRegionRectI(region, &rect, CombineModeIntersect);
+    ok(status == Ok, "status %08x\n", status);
+    status = GdipGetRegionDataSize(region, &needed);
+    ok(status == Ok, "status %08x\n", status);
+    ok(needed == 96, "got %d\n", needed);
+    status = GdipGetRegionData(region, (BYTE*)buf, sizeof(buf), &needed);
+    ok(status == Ok, "status %08x\n", status);
+    ok(needed == 96, "got %d\n", needed);
+    expect_dword(buf, 88);
+    trace("buf[1] = %08x\n", buf[1]);
+    expect_dword(buf + 2, 0xdbc01001);
+    expect_dword(buf + 3, 2);
+    expect_dword(buf + 4, CombineModeIntersect);
+    expect_dword(buf + 5, 0x10000001);
+    expect_dword(buf + 6, 0x00000030);
+    expect_dword(buf + 7, 0xdbc01001);
+    expect_dword(buf + 8, 0x00000004);
+    expect_dword(buf + 9, 0x00000000);
+    expect_float(buf + 10, 12.5);
+    expect_float(buf + 11, 13.0);
+    expect_float(buf + 12, 26.5);
+    expect_float(buf + 13, 13.0);
+    expect_float(buf + 14, 26.5);
+    expect_float(buf + 15, 28.0);
+    expect_float(buf + 16, 12.5);
+    expect_float(buf + 17, 28.0);
+    expect_dword(buf + 18, 0x81010100);
+    expect_dword(buf + 19, 0x10000000);
+    expect_float(buf + 20, 50.0);
+    expect_float(buf + 21, 30.0);
+    expect_float(buf + 22, 10.0);
+    expect_float(buf + 23, 20.0);
+
+    status = GdipDeleteRegion(region);
+    ok(status == Ok, "status %08x\n", status);
+    status = GdipDeletePath(path);
+    ok(status == Ok, "status %08x\n", status);
+
 }
 
 START_TEST(region)
@@ -215,7 +292,7 @@ START_TEST(region)
 
     GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
 
-    test_create_rgn();
+    test_getregiondata();
 
     GdiplusShutdown(gdiplusToken);