1 files changed, 71 insertions, 0 deletions
diff --git a/pdf/SkPDFImage.h b/pdf/SkPDFImage.h
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+++ b/pdf/SkPDFImage.h
@@ -0,0 +1,71 @@
+
+/*
+ * Copyright 2010 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+#ifndef SkPDFImage_DEFINED
+#define SkPDFImage_DEFINED
+
+#include "SkPDFDevice.h"
+#include "SkPDFImageStream.h"
+#include "SkPDFTypes.h"
+#include "SkRefCnt.h"
+
+class SkBitmap;
+class SkPDFCatalog;
+struct SkIRect;
+
+/** \class SkPDFImage
+
+    An image XObject.
+*/
+
+// We could play the same trick here as is done in SkPDFGraphicState, storing
+// a copy of the Bitmap object (not the pixels), the pixel generation number,
+// and settings used from the paint to canonicalize image objects.
+class SkPDFImage : public SkPDFImageStream {
+public:
+    /** Create a new Image XObject to represent the passed bitmap.
+     *  @param bitmap   The image to encode.
+     *  @param srcRect  The rectangle to cut out of bitmap.
+     *  @param paint    Used to calculate alpha, masks, etc.
+     *  @return  The image XObject or NUll if there is nothing to draw for
+     *           the given parameters.
+     */
+    static SkPDFImage* CreateImage(const SkBitmap& bitmap,
+                                   const SkIRect& srcRect,
+                                   EncodeToDCTStream encoder);
+
+    virtual ~SkPDFImage();
+
+    /** Add a Soft Mask (alpha or shape channel) to the image.  Refs mask.
+     *  @param mask A gray scale image representing the mask.
+     *  @return The mask argument is returned.
+     */
+    SkPDFImage* addSMask(SkPDFImage* mask);
+
+    // The SkPDFObject interface.
+    virtual void getResources(const SkTSet<SkPDFObject*>& knownResourceObjects,
+                              SkTSet<SkPDFObject*>* newResourceObjects);
+
+private:
+    SkTDArray<SkPDFObject*> fResources;
+
+    /** Create a PDF image XObject. Entries for the image properties are
+     *  automatically added to the stream dictionary.
+     *  @param imageData  The final raw bits representing the image.
+     *  @param bitmap     The image parameters to use (Config, etc).
+     *  @param srcRect    The clipping applied to bitmap before generating
+     *                    imageData.
+     *  @param alpha      Is this the alpha channel of the bitmap.
+     *  @param paint      Used to calculate alpha, masks, etc.
+     */
+    SkPDFImage(SkStream* imageData, const SkBitmap& bitmap,
+               const SkIRect& srcRect, bool alpha, EncodeToDCTStream encoder);
+};
+
+#endif