gdiplus/tests: Add gif frames composition tests.

dlls/gdiplus/tests/image.c

@@ -2423,6 +2423,51 @@ static const unsigned char gifanimation[72] = {
 0x00,0x00,0x02,0x02,0x44,0x01,0x00,0x3b
 };
 
+/* Generated with ImageMagick:
+ * convert -transparent black -delay 100 -size 8x2 xc:black \
+ *     -dispose none -page +0+0 -size 2x2 xc:red \
+ *     -dispose background -page +2+0 -size 2x2 xc:blue \
+ *     -dispose previous -page +4+0 -size 2x2 xc:green \
+ *     -dispose undefined -page +6+0 -size 2x2 xc:gray \
+ *     test.gif
+ */
+static const unsigned char gifanimation2[] = {
+    0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x08, 0x00,
+    0x02, 0x00, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x21, 0xf9, 0x04, 0x01, 0x64,
+    0x00, 0x00, 0x00, 0x21, 0xff, 0x0b, 0x4e, 0x45,
+    0x54, 0x53, 0x43, 0x41, 0x50, 0x45, 0x32, 0x2e,
+    0x30, 0x03, 0x01, 0x00, 0x00, 0x00, 0x2c, 0x00,
+    0x00, 0x00, 0x00, 0x08, 0x00, 0x02, 0x00, 0x00,
+    0x02, 0x04, 0x84, 0x8f, 0x09, 0x05, 0x00, 0x21,
+    0xf9, 0x04, 0x04, 0x64, 0x00, 0x00, 0x00, 0x2c,
+    0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x02, 0x00,
+    0x81, 0xff, 0x00, 0x00, 0xff, 0x00, 0x00, 0xff,
+    0x00, 0x00, 0xff, 0x00, 0x00, 0x02, 0x03, 0x44,
+    0x34, 0x05, 0x00, 0x21, 0xf9, 0x04, 0x08, 0x64,
+    0x00, 0x00, 0x00, 0x2c, 0x02, 0x00, 0x00, 0x00,
+    0x02, 0x00, 0x02, 0x00, 0x81, 0x00, 0x00, 0xff,
+    0x00, 0x00, 0xff, 0x00, 0x00, 0xff, 0x00, 0x00,
+    0xff, 0x02, 0x03, 0x44, 0x34, 0x05, 0x00, 0x21,
+    0xf9, 0x04, 0x0c, 0x64, 0x00, 0x00, 0x00, 0x2c,
+    0x04, 0x00, 0x00, 0x00, 0x02, 0x00, 0x02, 0x00,
+    0x81, 0x00, 0x80, 0x00, 0x00, 0x80, 0x00, 0x00,
+    0x80, 0x00, 0x00, 0x80, 0x00, 0x02, 0x03, 0x44,
+    0x34, 0x05, 0x00, 0x21, 0xf9, 0x04, 0x00, 0x64,
+    0x00, 0x00, 0x00, 0x2c, 0x06, 0x00, 0x00, 0x00,
+    0x02, 0x00, 0x02, 0x00, 0x80, 0x7e, 0x7e, 0x7e,
+    0x00, 0x00, 0x00, 0x02, 0x02, 0x84, 0x51, 0x00,
+    0x3b
+};
+
+static ARGB gifanimation2_pixels[5][4] = {
+    {0, 0, 0, 0},
+    {0xffff0000, 0, 0, 0},
+    {0xffff0000, 0xff0000ff, 0, 0},
+    {0xffff0000, 0, 0xff008000, 0},
+    {0xffff0000, 0, 0, 0xff7e7e7e}
+};
+
 static void test_multiframegif(void)
 {
     LPSTREAM stream;
@@ -2435,7 +2480,7 @@ static void test_multiframegif(void)
     UINT count;
     GUID dimension;
     PixelFormat pixel_format;
-    INT palette_size;
+    INT palette_size, i, j;
 
     /* Test frame functions with an animated GIF */
     hglob = GlobalAlloc (0, sizeof(gifanimation));
@@ -2575,6 +2620,54 @@ static void test_multiframegif(void)
 
     GdipDisposeImage((GpImage*)bmp);
     IStream_Release(stream);
+
+    /* Test frame dispose methods */
+    hglob = GlobalAlloc (0, sizeof(gifanimation2));
+    data = GlobalLock (hglob);
+    memcpy(data, gifanimation2, sizeof(gifanimation2));
+    GlobalUnlock(hglob);
+
+    hres = CreateStreamOnHGlobal(hglob, TRUE, &stream);
+    ok(hres == S_OK, "Failed to create a stream\n");
+
+    stat = GdipCreateBitmapFromStream(stream, &bmp);
+    ok(stat == Ok, "Failed to create a Bitmap\n");
+    IStream_Release(stream);
+
+    stat = GdipImageGetFrameDimensionsList((GpImage*)bmp, &dimension, 1);
+    expect(Ok, stat);
+    expect_guid(&FrameDimensionTime, &dimension, __LINE__, FALSE);
+
+    stat = GdipImageGetFrameCount((GpImage*)bmp, &dimension, &count);
+    expect(Ok, stat);
+    expect(5, count);
+
+    stat = GdipBitmapGetPixel(bmp, 0, 0, &color);
+    expect(Ok, stat);
+    expect(0, color);
+
+    stat = GdipImageSelectActiveFrame((GpImage*)bmp, &dimension, 3);
+    stat = GdipBitmapGetPixel(bmp, 2, 0, &color);
+    expect(Ok, stat);
+    ok(color==0 || broken(color==0xff0000ff), "color = %x\n", color);
+    if(color != 0) {
+        win_skip("broken animated gif support\n");
+        GdipDisposeImage((GpImage*)bmp);
+        return;
+    }
+
+    for(i=0; i<6; i++) {
+        stat = GdipImageSelectActiveFrame((GpImage*)bmp, &dimension, i%5);
+        expect(Ok, stat);
+
+        for(j=0; j<4; j++) {
+            stat = GdipBitmapGetPixel(bmp, j*2, 0, &color);
+            expect(Ok, stat);
+            ok(gifanimation2_pixels[i%5][j] == color, "at %d,%d got %x, expected %x\n", i, j, color, gifanimation2_pixels[i%5][j]);
+        }
+    }
+
+    GdipDisposeImage((GpImage*)bmp);
 }
 
 static void test_rotateflip(void)