diff options
Diffstat (limited to 'dmagick')
| -rw-r--r-- | dmagick/Image.d | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/dmagick/Image.d b/dmagick/Image.d index c14be8d..a208b80 100644 --- a/dmagick/Image.d +++ b/dmagick/Image.d @@ -155,6 +155,65 @@ class Image } /** + * Constructs a description of the image as a string. + * The string contains some or all of the following fields: + * $(B filename) The current filename. $(BR) + * $(B [scene]) The scene number, if the image is part of a secuence. $(BR) + * $(B format) The image format. $(BR) + * $(B width x height) $(BR) + * $(B page width x height + xOffset + yOffset) $(BR) + * $(B classType) DirectClass or PseudoClass $(BR) + * $(B N-bit) bit depth. $(BR) + * $(B blob size) if present. + */ + string toString() + { + string result; + + result ~= to!(string)(imageRef.filename); + + //Scene number. + ssize_t index = GetImageIndexInList(imageRef); + if ( index > 0 ) + { + result ~= std.string.format("[%s]", index); + } + + result ~= std.string.format(" %s ", format); + result ~= std.string.format("%sx%s ", columns, rows); + + //Page size + if ( imageRef.page.width > 0 || imageRef.page.height > 0 + || imageRef.page.x != 0 || imageRef.page.y != 0 ) + { + result ~= std.string.format("%sx%s%+ld%+ld ", + imageRef.page.width, imageRef.page.height, + imageRef.page.x, imageRef.page.y); + } + + if ( classType == ClassType.DirectClass ) + result ~= "DirectClass "; + else + result ~= "PseudoClass "; + + result = std.string.format("%s-bit", GetImageQuantumDepth(imageRef true); + + //Size of the image. + MagickSizeType size = GetBlobSize(imageRef); + if ( size > 0 ) + { + if ( size > 2*1024*1024 ) + result ~= std.string.format("%s MiB", size/1024/1024); + else if ( size > 2*1024 ) + result ~= std.string.format("%s KiB", size/1024); + else + result ~= std.string.format("%s bytes", size); + } + + return result; + } + + /** * Adaptively blurs the image by blurring more intensely near * image edges and less intensely far from edges. * The adaptiveBlur method blurs the image with a Gaussian operator @@ -1578,6 +1637,90 @@ class Image } /** + * Adjusts the levels of an image by scaling the colors falling between + * specified white and black points to the full available quantum range. + * The parameters provided represent the black, mid, and white points. + * Colors darker than the black point are set to zero. Colors brighter + * than the white point are set to the maximum quantum value. + * + * It is typically used to improve image contrast, or to provide a + * controlled linear threshold for the image. If the black and white + * points are set to the minimum and maximum values found in the image, + * the image can be normalized. or by swapping black and white values, + * negate the image. + * + * Params: + * blackPoint = Specifies the darkest color in the image. + * whitePoint = Specifies the lightest color in the image. + * gamma = Specifies the gamma correction to apply to the image. + * channel = The channels to level. + */ + void level(Quantum blackPoint = 0, Quantum whitePoint = QuantumRange, double gamma = 1, ChannelType channel = ChannelType.DefaultChannels) + { + LevelImageChannel(imageRef, channel, blackPoint, whitePoint, gamma); + + DMagickException.throwException(&(imageRef.exception)); + } + + /** + * applies the reversed level operation to just the channels specified. + * It compresses the full range of color values, so that they lie between + * the given black and white points. Gamma is applied before the values + * are mapped. + * + * It can be used for example de-contrast a greyscale image to the exact + * levels specified. Or by using specific levels for each channel of an + * image you can convert a gray-scale image to any linear color gradient, + * according to those levels. + * + * Params: + * blackPoint = Specifies the darkest color in the image. + * whitePoint = Specifies the lightest color in the image. + * gamma = Specifies the gamma correction to apply to the image. + * channel = The channels to level. + */ + void levelize(Quantum blackPoint = 0, Quantum whitePoint = QuantumRange, double gamma = 1, ChannelType channel = ChannelType.DefaultChannels) + { + LevelizeImageChannel(imageRef, channel, blackPoint, whitePoint, gamma); + + DMagickException.throwException(&(imageRef.exception)); + } + + /** + * Discards any pixels below the black point and above the white + * point and levels the remaining pixels. + * + * Params: + * blackPoint = Specifies the darkest color in the image. + * whitePoint = Specifies the lightest color in the image. + */ + void linearStretch(blackPoint = 0, Quantum whitePoint) + { + LinearStretchImage(imageRef, blackPoint, whitePoint); + + DMagickException.throwException(&(imageRef.exception)); + } + + /** + * Rescale image with seam carving. To use this method, you must + * have installed and configured ImageMagick to use the + * $(LINK2 http://liblqr.wikidot.com/, Liquid Rescale Library). + * + * Params: + * columns = The desired width. + * rows = The desired height. + * deltaX = Maximum seam transversal step (0 means straight seams). + * rigidity = Introduce a bias for non-straight seams (typically 0). + */ + void liquidRescale(size_t columns, size_t rows, double deltaX = 0, double rigidity = 0) + { + MagickCoreImage* image = + LiquidRescaleImage(imageRef, columns, rows, deltaX, rigidity, DMagickExceptionInfo()); + + imageRef = ImageRef(image); + } + + /** * Read an Image by reading from the file or * URL specified by filename. */ |