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+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date : 2005-06-14
+ * Description : digiKam 8/16 bits image management API
+ *
+ * Copyright (C) 2005 by Renchi Raju <renchi@pooh.tam.uiuc.edu>
+ * Copyright (C) 2005-2007 by Gilles Caulier <caulier dot gilles at gmail dot com>
+ * Copyright (C) 2006-2007 by Marcel Wiesweg <marcel.wiesweg@gmx.de>
+ *
+ * This program is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU General
+ * Public License as published by the Free Software Foundation;
+ * either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * ============================================================ */
+
+#ifndef DIMG_H
+#define DIMG_H
+
+// TQt includes.
+
+#include <tqcstring.h>
+#include <tqsize.h>
+#include <tqrect.h>
+#include <tqimage.h>
+#include <tqpixmap.h>
+#include <tqvariant.h>
+
+// Local includes.
+
+#include "digikam_export.h"
+#include "drawdecoding.h"
+#include "dcolor.h"
+#include "dcolorcomposer.h"
+
+class TQString;
+
+namespace Digikam
+{
+
+class ExposureSettingsContainer;
+class DImgPrivate;
+class IccTransform;
+class DImgLoaderObserver;
+
+class DIGIKAM_EXPORT DImg
+{
+public:
+
+ enum FORMAT
+ {
+ NONE = 0,
+ JPEG,
+ PNG,
+ TIFF,
+ RAW,
+ PPM,
+ JP2K,
+ TQIMAGE
+ };
+
+ enum METADATA
+ {
+ COM, // JFIF comments section data.
+ EXIF, // EXIF meta-data.
+ IPTC, // IPTC meta-data.
+ ICC // ICC color profile.
+ };
+
+ enum ANGLE
+ {
+ ROT90,
+ ROT180,
+ ROT270
+ };
+
+ enum FLIP
+ {
+ HORIZONTAL,
+ VERTICAL
+ };
+
+ /** Identify file format */
+ static FORMAT fileFormat(const TQString& filePath);
+
+ /** Create null image */
+ DImg();
+
+ /** Load image using TQCString as file path */
+ DImg(const TQCString& filePath, DImgLoaderObserver *observer = 0,
+ DRawDecoding rawDecodingSettings=DRawDecoding());
+
+ /** Load image using TQString as file path */
+ DImg(const TQString& filePath, DImgLoaderObserver *observer = 0,
+ DRawDecoding rawDecodingSettings=DRawDecoding());
+
+ /** Copy image: Creates a shallow copy that refers to the same shared data.
+ The two images will be equal. Call detach() or copy() to create deep copies.
+ */
+ DImg(const DImg& image);
+
+ /** Copy image: Creates a copy of a TQImage object. If the TQImage is null, a
+ null DImg will be created.
+ */
+ DImg(const TQImage& image);
+
+ /** Create image from data.
+ If data is 0, a new buffer will be allocated, otherwise the given data will be used:
+ If copydata is true, the data will be copied to a newly allocated buffer.
+ If copyData is false, this DImg object will take ownership of the data pointer.
+
+ If there is an alpha channel, the data shall be in non-premultiplied form (unassociated alpha).
+ */
+ DImg(uint width, uint height, bool sixteenBit, bool alpha=false, uchar* data = 0, bool copyData = true);
+
+ ~DImg();
+
+ /** Equivalent to the copy constructor */
+ DImg& operator=(const DImg& image);
+
+ /** Detaches from shared data and makes sure that this image
+ is the only one referring to the data.
+ If multiple images share common data, this image makes a copy
+ of the data and detaches itself from the sharing mechanism.
+ Nothing is done if there is just a single reference.
+ */
+ void detach();
+
+ /** Returns whether two images are equal.
+ Two images are equal if and only if they refer to the same shared data.
+ (Thus, DImg() == DImg() is not true, both instances refer two their
+ own shared data. image == DImg(image) is true.)
+ If two or more images refer to the same data, they have the same
+ image data, bits() returns the same data, they have the same metadata,
+ and a change to one image also affects the others.
+ Call detach() to split one image from the group of equal images.
+ */
+ bool operator==(const DImg& image) const;
+
+
+ /** Replaces image data of this object. Metadata is unchanged. Parameters like constructor above. */
+ void putImageData(uint width, uint height, bool sixteenBit, bool alpha, uchar *data, bool copyData = true);
+
+ /** Overloaded function, provided for convenience, behaves essentially
+ like the function above if data is not 0.
+ Uses current width, height, sixteenBit, and alpha values.
+ If data is 0, the current data is deleted and the image is set to null
+ (But metadata unchanged).
+ */
+ void putImageData(uchar *data, bool copyData = true);
+
+ /** Reset metadata and image data to null image */
+ void reset(void);
+
+ /** Reset metadata, but do not change image data */
+ void resetMetaData(void);
+
+ /** Returns the data of this image.
+ Ownership of the buffer is passed to the caller, this image will be null afterwards.
+ */
+ uchar* stripImageData();
+
+
+
+ bool load(const TQString& filePath, DImgLoaderObserver *observer = 0,
+ DRawDecoding rawDecodingSettings=DRawDecoding());
+
+ bool save(const TQString& filePath, const TQString& format, DImgLoaderObserver *observer = 0);
+
+ bool isNull() const;
+ uint width() const;
+ uint height() const;
+ TQSize size() const;
+ uchar* bits() const;
+ uchar* scanLine(uint i) const;
+ bool hasAlpha() const;
+ bool sixteenBit() const;
+ uint numBytes() const;
+ uint numPixels() const;
+
+ /** Return the number of bytes depth of one pixel : 4 (non sixteenBit) or 8 (sixteen) */
+ int bytesDepth() const;
+
+ /** Return the number of bits depth of one color component for one pixel : 8 (non sixteenBit) or 16 (sixteen) */
+ int bitsDepth() const;
+
+ /** Access a single pixel of the image.
+ These functions add some safety checks and then use the methods from DColor.
+ In optimized code working directly on the data,
+ better use the inline methods from DColor.
+ */
+ DColor getPixelColor(uint x, uint y) const;
+ void setPixelColor(uint x, uint y, DColor color);
+
+ /**
+ Return true if the original image file format cannot be saved.
+ This is depending of DImgLoader::save() implementation. For example
+ RAW file formats are supported by DImg uing dcraw than cannot support
+ writing operations.
+ */
+ bool isReadOnly() const;
+
+ /** Metadata manipulation methods */
+ TQByteArray getComments() const;
+ TQByteArray getExif() const;
+ TQByteArray getIptc() const;
+ TQByteArray getICCProfil() const;
+ void setComments(const TQByteArray& commentsData);
+ void setExif(const TQByteArray& exifData);
+ void setIptc(const TQByteArray& iptcData);
+ void setICCProfil(const TQByteArray& profile);
+
+ TQByteArray metadata(METADATA key) const;
+
+ bool getICCProfilFromFile(const TQString& filePath);
+ bool setICCProfilToFile(const TQString& filePath);
+
+ void setAttribute(const TQString& key, const TQVariant& value);
+ TQVariant attribute(const TQString& key) const;
+
+ void setEmbeddedText(const TQString& key, const TQString& text);
+ TQString embeddedText(const TQString& key) const;
+
+
+ /** Return a deep copy of full image */
+ DImg copy();
+
+ /** Return a deep copy of the image, but do not include metadata. */
+ DImg copyImageData();
+
+ /** Return an image that containes a deep copy of
+ this image's metadata and the information associated
+ with the image data (width, height, hasAlpha, sixteenBit),
+ but no image data, i.e. isNull() is true.
+ */
+ DImg copyMetaData();
+
+ /** Return a region of image */
+ DImg copy(TQRect rect);
+ DImg copy(int x, int y, int w, int h);
+
+ /** Copy a region of pixels from a source image to this image.
+ Parameters:
+ sx|sy Coordinates in the source image of the rectangle to be copied
+ w h Width and height of the rectangle (Default, or when both are -1: whole source image)
+ dx|dy Coordinates in this image of the rectangle in which the region will be copied
+ (Default: 0|0)
+ The bit depth of source and destination must be identical.
+ */
+ void bitBltImage(const DImg* src, int dx, int dy);
+ void bitBltImage(const DImg* src, int sx, int sy, int dx, int dy);
+ void bitBltImage(const DImg* src, int sx, int sy, int w, int h, int dx, int dy);
+ void bitBltImage(const uchar* src, int sx, int sy, int w, int h, int dx, int dy,
+ uint swidth, uint sheight, int sdepth);
+
+ /** Blend src image on this image (this is dest) with the specified composer
+ and multiplication flags. See documentation of DColorComposer for more info.
+ For the other arguments, see documentation of bitBltImage above.
+ */
+ void bitBlendImage(DColorComposer *composer, const DImg* src,
+ int sx, int sy, int w, int h, int dx, int dy,
+ DColorComposer::MultiplicationFlags multiplicationFlags =
+ DColorComposer::NoMultiplication);
+
+ /** TQImage wrapper methods */
+ TQImage copyTQImage();
+ TQImage copyTQImage(TQRect rect);
+ TQImage copyTQImage(int x, int y, int w, int h);
+
+ /** Crop image to the specified region */
+ void crop(TQRect rect);
+ void crop(int x, int y, int w, int h);
+
+ /** Set width and height of this image, smoothScale it to the given size */
+ void resize(int w, int h);
+
+ /** Return a version of this image scaled to the specified size with the specified mode.
+ See TQSize documentation for information on available modes
+ */
+ DImg smoothScale(int width, int height, TQSize::ScaleMode scaleMode=TQSize::ScaleFree);
+
+ /** Take the region specified by the rectangle sx|sy, width and height sw * sh,
+ and scale it to an image with size dw * dh
+ */
+ DImg smoothScaleSection(int sx, int sy, int sw, int sh,
+ int dw, int dh);
+
+ void rotate(ANGLE angle);
+ void flip(FLIP direction);
+
+ TQPixmap convertToPixmap();
+ TQPixmap convertToPixmap(IccTransform* monitorICCtrans);
+
+ /** Return a mask image where pure white and pure black pixels are over-colored.
+ This way is used to identify over and under exposed pixels.
+ */
+ TQImage pureColorMask(ExposureSettingsContainer *expoSettings);
+
+ /** Convert depth of image. Depth is bytesDepth * bitsDepth.
+ If depth is 32, converts to 8 bits,
+ if depth is 64, converts to 16 bits.
+ */
+ void convertDepth(int depth);
+
+ /** Wrapper methods for convertDepth */
+ void convertToSixteenBit();
+ void convertToEightBit();
+ void convertToDepthOfImage(const DImg *otherImage);
+
+ /** Fill whole image with specified color.
+ The bit depth of the color must be identical to the depth of this image.
+ */
+ void fill(DColor color);
+
+private:
+
+ DImgPrivate *m_priv;
+
+private:
+
+ void copyMetaData(const DImgPrivate *src);
+ void copyImageData(const DImgPrivate *src);
+ void setImageData(bool null, uint width, uint height, bool sixteenBit, bool alpha);
+ void setImageDimension(uint width, uint height);
+ int allocateData();
+ DImg(const DImg &image, int w, int h);
+ static void bitBlt(const uchar *src, uchar *dest,
+ int sx, int sy, int w, int h, int dx, int dy,
+ uint swidth, uint sheight, uint dwidth, uint dheight,
+ bool sixteenBit, int sdepth, int ddepth);
+ static void bitBlend(DColorComposer *composer, const uchar *src, uchar *dest,
+ int sx, int sy, int w, int h, int dx, int dy,
+ uint swidth, uint sheight, uint dwidth, uint dheight,
+ bool sixteenBit, int sdepth, int ddepth,
+ DColorComposer::MultiplicationFlags multiplicationFlags);
+ static bool normalizeRegionArguments(int &sx, int &sy, int &w, int &h, int &dx, int &dy,
+ uint swidth, uint sheight, uint dwidth, uint dheight);
+
+ friend class DImgLoader;
+};
+
+} // NameSpace Digikam
+
+#endif /* DIMG_H */
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