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-rw-r--r--image/ImageMetadata.h99
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diff --git a/image/ImageMetadata.h b/image/ImageMetadata.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_image_ImageMetadata_h
+#define mozilla_image_ImageMetadata_h
+
+#include <stdint.h>
+#include "mozilla/Maybe.h"
+#include "nsSize.h"
+#include "Orientation.h"
+
+namespace mozilla {
+namespace image {
+
+class RasterImage;
+
+// The metadata about an image that decoders accumulate as they decode.
+class ImageMetadata
+{
+public:
+ ImageMetadata()
+ : mLoopCount(-1)
+ , mFirstFrameTimeout(FrameTimeout::Forever())
+ , mHasAnimation(false)
+ { }
+
+ void SetHotspot(uint16_t aHotspotX, uint16_t aHotspotY)
+ {
+ mHotspot = Some(gfx::IntPoint(aHotspotX, aHotspotY));
+ }
+ gfx::IntPoint GetHotspot() const { return *mHotspot; }
+ bool HasHotspot() const { return mHotspot.isSome(); }
+
+ void SetLoopCount(int32_t loopcount)
+ {
+ mLoopCount = loopcount;
+ }
+ int32_t GetLoopCount() const { return mLoopCount; }
+
+ void SetLoopLength(FrameTimeout aLength) { mLoopLength = Some(aLength); }
+ FrameTimeout GetLoopLength() const { return *mLoopLength; }
+ bool HasLoopLength() const { return mLoopLength.isSome(); }
+
+ void SetFirstFrameTimeout(FrameTimeout aTimeout) { mFirstFrameTimeout = aTimeout; }
+ FrameTimeout GetFirstFrameTimeout() const { return mFirstFrameTimeout; }
+
+ void SetFirstFrameRefreshArea(const gfx::IntRect& aRefreshArea)
+ {
+ mFirstFrameRefreshArea = Some(aRefreshArea);
+ }
+ gfx::IntRect GetFirstFrameRefreshArea() const { return *mFirstFrameRefreshArea; }
+ bool HasFirstFrameRefreshArea() const { return mFirstFrameRefreshArea.isSome(); }
+
+ void SetSize(int32_t width, int32_t height, Orientation orientation)
+ {
+ if (!HasSize()) {
+ mSize.emplace(nsIntSize(width, height));
+ mOrientation.emplace(orientation);
+ }
+ }
+ nsIntSize GetSize() const { return *mSize; }
+ bool HasSize() const { return mSize.isSome(); }
+
+ Orientation GetOrientation() const { return *mOrientation; }
+ bool HasOrientation() const { return mOrientation.isSome(); }
+
+ void SetHasAnimation() { mHasAnimation = true; }
+ bool HasAnimation() const { return mHasAnimation; }
+
+private:
+ /// The hotspot found on cursors, if present.
+ Maybe<gfx::IntPoint> mHotspot;
+
+ /// The loop count for animated images, or -1 for infinite loop.
+ int32_t mLoopCount;
+
+ // The total length of a single loop through an animated image.
+ Maybe<FrameTimeout> mLoopLength;
+
+ /// The timeout of an animated image's first frame.
+ FrameTimeout mFirstFrameTimeout;
+
+ // The area of the image that needs to be invalidated when the animation
+ // loops.
+ Maybe<gfx::IntRect> mFirstFrameRefreshArea;
+
+ Maybe<nsIntSize> mSize;
+ Maybe<Orientation> mOrientation;
+
+ bool mHasAnimation : 1;
+};
+
+} // namespace image
+} // namespace mozilla
+
+#endif // mozilla_image_ImageMetadata_h