Diffstat (limited to 'libopie2/opieui/oimageeffect.h') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | libopie2/opieui/oimageeffect.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libopie2/opieui/oimageeffect.h b/libopie2/opieui/oimageeffect.h index 4f86d5b..4422741 100644 --- a/libopie2/opieui/oimageeffect.h +++ b/libopie2/opieui/oimageeffect.h @@ -30,535 +30,535 @@ THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ // $Id$ #ifndef OIMAGEEFFECT_H #define OIMAGEEFFECT_H class QImage; class QSize; class QColor; namespace Opie { namespace Ui { /** * This class includes various @ref QImage based graphical effects. * * Everything is * static, so there is no need to create an instance of this class. You can * just call the static methods. They are encapsulated here merely to provide * a common namespace. */ class OImageEffect { public: enum GradientType { VerticalGradient, HorizontalGradient, DiagonalGradient, CrossDiagonalGradient, PyramidGradient, RectangleGradient, PipeCrossGradient, EllipticGradient }; enum RGBComponent { Red, Green, Blue, Gray, All }; enum Lighting {NorthLite, NWLite, WestLite, SWLite, SouthLite, SELite, EastLite, NELite}; enum ModulationType { Intensity, Saturation, HueShift, Contrast }; enum NoiseType { UniformNoise=0, GaussianNoise, MultiplicativeGaussianNoise, ImpulseNoise, LaplacianNoise, PoissonNoise}; enum RotateDirection{ Rotate90, Rotate180, Rotate270 }; /** * Create a gradient from color a to color b of the specified type. * * @param size The desired size of the gradient. * @param ca Color a * @param cb Color b * @param type The type of gradient. * @param ncols The number of colors to use when not running on a * truecolor display. The gradient will be dithered to this number of * colors. Pass 0 to prevent dithering. */ static QImage gradient(const QSize &size, const QColor &ca, const QColor &cb, GradientType type, int ncols=3); /** * Create an unbalanced gradient. * An unbalanced gradient is a gradient where the transition from * color a to color b is not linear, but in this case, exponential. * * @param size The desired size of the gradient. * @param ca Color a * @param cb Color b * @param type The type of gradient. * @param xfactor The x decay length. Use a value between -200 and 200. * @param yfactor The y decay length. * @param ncols The number of colors. See OPixmapEffect:gradient. */ static QImage unbalancedGradient(const QSize &size, const QColor &ca, const QColor &cb, GradientType type, int xfactor = 100, int yfactor = 100, int ncols = 3); /** * Blends a color into the destination image, using an opacity * value for blending one into another. Very fast direct pixel * manipulation is used. * * @author Karol Szwed (gallium@kde.org) * @param clr source color to be blended into the destination image. * @param dst destination image in which the source will be blended into. * @param opacity opacity (in percent) which determines how much the source * color will be blended into the destination image. * @return The destination image (dst) containing the result. */ static QImage& blend(const QColor& clr, QImage& dst, float opacity); /** * Blend the src image into the destination image, using an opacity * value for blending one into another. Very fast direct pixel * manipulation is used. * * @author Karol Szwed (gallium@kde.org) * @param src source image to be blended into the destination image. * @param dst destination image in which the source will be blended into. * @param opacity opacity (in percent) which determines how much the source * image will be blended into the destination image. * @return The destination image (dst) containing the result. */ static QImage& blend(QImage& src, QImage& dst, float opacity); /** * Blend the provided image into a background of the indicated color. * * @param initial_intensity this parameter takes values from -1 to 1: * a) if positive: how much to fade the image in its * less affected spot * b) if negative: roughly indicates how much of the image * remains unaffected * @param bgnd indicates the color of the background to blend in * @param eff lets you choose what kind of blending you like * @param anti_dir blend in the opposite direction (makes no much sense * with concentric blending effects) * @param image must be 32bpp */ static QImage& blend(QImage &image, float initial_intensity, const QColor &bgnd, GradientType eff, bool anti_dir=false); /** * Blend an image into another one, using a gradient type * for blending from one to another. * * @param image1 source1 and result of blending * @param image2 source2 of blending * @param gt gradient type for blending between source1 and source2 * @param xf x decay length for unbalanced gradient tpye * @param yf y decay length for unbalanced gradient tpye */ static QImage& blend(QImage &image1,QImage &image2, GradientType gt, int xf=100, int yf=100); /** * Blend an image into another one, using a color channel of a * third image for the decision of blending from one to another. * * @param image1 Source 1 and result of blending * @param image2 Source 2 of blending * @param blendImage If the gray value of of pixel is 0, the result * for this pixel is that of image1; for a gray value * of 1, the pixel of image2 is used; for a value * inbetween, a corresponding blending is used. * @param channel The RBG channel to use for the blending decision. */ static QImage& blend(QImage &image1, QImage &image2, QImage &blendImage, RGBComponent channel); /** * Blend an image into another one, using alpha in the expected way. * @author Rik Hemsley (rikkus) <rik@kde.org> */ static bool blend(const QImage & upper, const QImage & lower, QImage & output); // Not yet... static bool blend(const QImage & image1, const QImage & image2, QImage & output, const QRect & destRect); /** * Blend an image into another one, using alpha in the expected way and * over coordinates @p x and @p y with respect to the lower image. * The output is a QImage which is the @p upper image already blended * with the @p lower one, so its size will be (in general) the same than * @p upper instead of the same size than @p lower like the method above. * In fact, the size of @p output is like upper's one only when it can be * painted on lower, if there has to be some clipping, output's size will * be the clipped area and x and y will be set to the correct up-left corner * where the clipped rectangle begins. */ static bool blend(int &x, int &y, const QImage & upper, const QImage & lower, QImage & output); /** * Blend an image into another one, using alpha in the expected way and * over coordinates @p x and @p y with respect to the lower image. * The output is painted in the own @p lower image. This is an optimization * of the blend method above provided by convenience. */ static bool blendOnLower(int x, int y, const QImage & upper, const QImage & lower); /** * Modifies the intensity of a pixmap's RGB channel component. * * @author Daniel M. Duley (mosfet) * @param image The QImage to process. * @param percent Percent value. Use a negative value to dim. * @param channel Which channel(s) should be modified * @return The @p image, provided for convenience. */ static QImage& channelIntensity(QImage &image, float percent, RGBComponent channel); /** * Fade an image to a certain background color. * * The number of colors will not be changed. * - * @param image The QImage to process. + * @param img The QImage to process. * @param val The strength of the effect. 0 <= val <= 1. * @param color The background color. * @return Returns the @ref image(), provided for convenience. */ static QImage& fade(QImage &img, float val, const QColor &color); /** * This recolors a pixmap. The most dark color will become color a, * the most bright one color b, and in between. * * @param image A QImage to process. * @param ca Color a * @param cb Color b */ static QImage& flatten(QImage &image, const QColor &ca, const QColor &cb, int ncols=0); /** * Build a hash on any given @ref QImage * * @param image The QImage to process * @param lite The hash faces the indicated lighting (cardinal poles). * @param spacing How many unmodified pixels inbetween hashes. * @return Returns the @ref image(), provided for convenience. */ static QImage& hash(QImage &image, Lighting lite=NorthLite, unsigned int spacing=0); /** * Either brighten or dim the image by a specified percent. * For example, .50 will modify the colors by 50%. * * @author Daniel M. Duley (mosfet) * @param image The QImage to process. * @param percent The percent value. Use a negative value to dim. * @return Returns The @ref image(), provided for convenience. */ static QImage& intensity(QImage &image, float percent); /** * Modulate the image with a color channel of another image. * * @param image The QImage to modulate and result. * @param modImage The QImage to use for modulation. * @param reverse Invert the meaning of image/modImage; result is image! * @param type The modulation Type to use. * @param factor The modulation amplitude; with 0 no effect [-200;200]. * @param channel The RBG channel of image2 to use for modulation. * @return Returns the @ref image(), provided for convenience. */ static QImage& modulate(QImage &image, QImage &modImage, bool reverse, ModulationType type, int factor, RGBComponent channel); /** * Convert an image to grayscale. * * @author Daniel M. Duley (mosfet) * @param image The @ref QImage to process. * @param fast Set to @p true in order to use a faster but non-photographic * quality algorithm. Appropriate for things such as toolbar icons. * @return Returns the @ref image(), provided for convenience. */ static QImage& toGray(QImage &image, bool fast = false); /** * Desaturate an image evenly. * * @param image The QImage to process. * @param desat A value between 0 and 1 setting the degree of desaturation * @return Returns the @ref image(), provided for convenience. */ static QImage& desaturate(QImage &image, float desat = 0.3); /** * Fast, but low quality contrast of an image. Also see contrastHSV. * * @author Daniel M. Duley (mosfet) * @param image The QImage to process. * @param c A contrast value between -255 to 255. * @return The @ref image(), provided for convenience. */ static QImage& contrast(QImage &image, int c); /** * Dither an image using Floyd-Steinberg dithering for low-color * situations. * - * @param image The QImage to process. + * @param img The QImage to process. * @param palette The color palette to use * @param size The size of the palette * @return Returns the @ref image(), provided for convenience. */ static QImage& dither(QImage &img, const QColor *palette, int size); /** * Calculate the image for a selected image, for instance a selected icon * on the desktop. * @param img the QImage to select * @param col the selected color, usually from QColorGroup::highlight(). */ static QImage& selectedImage( QImage &img, const QColor &col ); /** * High quality, expensive HSV contrast. You can do a faster one by just * taking a intensity threshold (ie: 128) and incrementing RGB color * channels above it and decrementing those below it, but this gives much * better results. * * @author Daniel M. Duley (mosfet) * @param img The QImage to process. * @param sharpen If true sharpness is increase, (spiffed). Otherwise * it is decreased, (dulled). */ static void contrastHSV(QImage &img, bool sharpen=true); /** * Normalizes the pixel values to span the full range of color values. * This is a contrast enhancement technique. * @author Daniel M. Duley (mosfet) */ static void normalize(QImage &img); /** * Performs histogram equalization on the reference * image. * @author Daniel M. Duley (mosfet) */ static void equalize(QImage &img); /** * Thresholds the reference image. You can also threshold images by using * ThresholdDither in the various QPixmap/QImage convert methods, but this * lets you specify a threshold value. * * @author Daniel M. Duley (mosfet) * @param img The QImage to process. * @param value The threshold value. */ static void threshold(QImage &img, unsigned int value=128); /** * Produces a 'solarization' effect seen when exposing a photographic * film to light during the development process. * * @author Daniel M. Duley (mosfet) * @param img The QImage to process. * @param factor The extent of the solarization (0-99.9) */ static void solarize(QImage &img, double factor=50.0); /** * Embosses the source image. This involves highlighting the edges * and applying various other enhancements in order to get a metal * effect. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @return The embossed image. The original is not changed. */ static QImage emboss(QImage &src); /** * Minimizes speckle noise in the source image using the 8 hull * algorithm. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @return The despeckled image. The original is not changed. */ static QImage despeckle(QImage &src); /** * Produces a neat little "charcoal" effect. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param factor The factor for detecting lines (0-99.0). * @return The charcoal image. The original is not changed. */ static QImage charcoal(QImage &src, double factor=50.0); /** * Rotates the image by the specified amount * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param r The rotate direction. * @return The rotated image. The original is not changed. */ static QImage rotate(QImage &src, RotateDirection r); /** * Scales an image using simple pixel sampling. This does not produce * nearly as nice a result as QImage::smoothScale(), but has the * advantage of being much faster - only a few milliseconds. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param w The new width. * @param h The new height. * @return The scaled image. The original is not changed. */ static QImage sample(QImage &src, int w, int h); /** * Adds noise to an image. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param type The algorithm used to generate the noise. * @return The image with noise added. The original is not changed. */ static QImage addNoise(QImage &src, NoiseType type = GaussianNoise); /** * Blurs an image by convolving pixel neighborhoods. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param factor The percent weight to give to the center pixel. * @return The blurred image. The original is not changed. */ static QImage blur(QImage &src, double factor=50.0); /** * Detects edges in an image using pixel neighborhoods and an edge * detection mask. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param factor The percent weight to give to the center pixel. * @return The image with edges detected. The original is not changed. */ static QImage edge(QImage &src, double factor=50.0); /** * Implodes an image by a specified percent. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param factor The extent of the implosion. * @param background An RGBA value to use for the background. After the * effect some pixels may be "empty". This value is used for those pixels. * @return The imploded image. The original is not changed. */ static QImage implode(QImage &src, double factor=30.0, unsigned int background = 0xFFFFFFFF); /** * Produces an oil painting effect. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param radius The radius of the pixel neighborhood used in applying the * effect. * @return The new image. The original is not changed. */ static QImage oilPaint(QImage &src, int radius=3); /** * Sharpens the pixels in the image using pixel neighborhoods. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param factor The percent weight to give to the center pixel. * @return The sharpened image. The original is not changed. */ static QImage sharpen(QImage &src, double factor=30.0); /** * Randomly displaces pixels. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param amount The vicinity for choosing a random pixel to swap. * @return The image with pixels displaced. The original is not changed. */ static QImage spread(QImage &src, unsigned int amount=3); /** * Shades the image using a distance light source. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param color_shading If true do color shading, otherwise do grayscale. * @param azimuth Determines the light source and direction. * @param elevation Determines the light source and direction. * @return The shaded image. The original is not changed. */ static QImage shade(QImage &src, bool color_shading=true, double azimuth=30.0, double elevation=30.0); /** * Swirls the image by a specified amount * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param degrees The tightness of the swirl. * @param background An RGBA value to use for the background. After the * effect some pixels may be "empty". This value is used for those pixels. * @return The swirled image. The original is not changed. */ static QImage swirl(QImage &src, double degrees=50.0, unsigned int background = 0xFFFFFFFF); /** * Modifies the pixels along a sine wave. * * @author Daniel M. Duley (mosfet) * @param src The QImage to process. * @param amplitude The amplitude of the sine wave. - * @param wavelength The frequency of the sine wave. + * @param frequency The frequency of the sine wave. * @return The new image. The original is not changed. */ static QImage wave(QImage &src, double amplitude=25.0, double frequency=150.0, unsigned int background = 0xFFFFFFFF); private: /** * Helper function to fast calc some altered (lighten, shaded) colors * */ static unsigned int lHash(unsigned int c); static unsigned int uHash(unsigned int c); /** * Helper function to find the nearest color to the RBG triplet */ static int nearestColor( int r, int g, int b, const QColor *pal, int size ); static void hull(const int x_offset, const int y_offset, const int polarity, const int width, const int height, unsigned int *f, unsigned int *g); static unsigned int generateNoise(unsigned int pixel, NoiseType type); static unsigned int interpolateColor(QImage *image, double x, double y, unsigned int background); }; } } #endif |