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authorclem <clem>2004-10-07 19:36:30 (UTC)
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small documentation format fixes
Diffstat (limited to 'libopie2/opieui/oimageeffect.h') (more/less context) (ignore whitespace changes)
-rw-r--r--libopie2/opieui/oimageeffect.h6
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