示例#1
0
        private void CalcCoordsAndUpdate(ColorHandler.HSV HSV)
        {
            // Convert color to real-world coordinates and then calculate
            // the various points. HSV.Hue represents the degrees (0 to 360),
            // HSV.Saturation represents the radius.
            // This procedure doesn't draw anything--it simply
            // updates class-level variables. The UpdateDisplay
            // procedure uses these values to update the screen.

            // Given the angle (HSV.Hue), and distance from
            // the center (HSV.Saturation), and the center,
            // calculate the point corresponding to
            // the selected color, on the color wheel.
            colorPoint = GetPoint((double)HSV.Hue / 255 * 360,
                                  (double)HSV.Saturation / 255 * radius,
                                  centerPoint);

            // Given the brightness (HSV.value), calculate the
            // point corresponding to the brightness indicator.
            brightnessPoint = CalcBrightnessPoint(HSV.Value);

            // Store information about the selected color.
            brightness    = HSV.Value;
            selectedColor = ColorHandler.HSVtoColor(HSV);
            argb          = ColorHandler.HSVtoRGB(HSV);

            // The full color is the same as HSV, except that the
            // brightness is set to full (255). This is the top-most
            // color in the brightness gradient.
            fullColor = ColorHandler.HSVtoColor(HSV.Alpha, HSV.Hue, HSV.Saturation, 255);
        }
示例#2
0
 public void Draw(Graphics g, ColorHandler.ARGB argb)
 {
     // Given RGB values, calculate HSV and then update the screen.
     this.g = g;
     HSV    = ColorHandler.RGBtoHSV(argb);
     CalcCoordsAndUpdate(HSV);
     UpdateDisplay();
 }
示例#3
0
 public void Draw(Graphics g, ColorHandler.Argb argb)
 {
     // Given RGB values, calculate HSV and then update the screen.
     _g   = g;
     _hsv = ColorHandler.RgbToHsv(argb);
     CalcCoordsAndUpdate(_hsv);
     UpdateDisplay();
 }
示例#4
0
        private Color[] GetColors()
        {
            // Create an array of COLOR_COUNT
            // colors, looping through all the
            // hues between 0 and 255, broken
            // into COLOR_COUNT intervals. HSV is
            // particularly well-suited for this,
            // because the only value that changes
            // as you create colors is the Hue.
            var Colors = new Color[COLOR_COUNT];

            for (int i = 0; i <= COLOR_COUNT - 1; i++)
            {
                Colors[i] = ColorHandler.HSVtoColor(255, (int)((double)(i * 255) / COLOR_COUNT), 255, 255);
            }
            return(Colors);
        }
 /// <summary>
 /// The set hsv.
 /// </summary>
 /// <param name="HSV">
 /// The hsv.
 /// </param>
 private void SetHSV(ColorHandler.HSV HSV)
 {
     // Update the HSV values on the form.
     RefreshValue(this.tbHue, HSV.Hue);
     RefreshValue(this.tbSaturation, HSV.Saturation);
     RefreshValue(this.tbValue, HSV.Value);
     RefreshValue(this.tbAlpha, HSV.Alpha);
     this.SetHSVLabels(HSV);
 }
 /// <summary>
 /// The set rgb.
 /// </summary>
 /// <param name="argb">
 /// The argb.
 /// </param>
 private void SetRGB(ColorHandler.ARGB argb)
 {
     // Update the RGB values on the form.
     RefreshValue(this.tbRed, argb.Red);
     RefreshValue(this.tbBlue, argb.Blue);
     RefreshValue(this.tbGreen, argb.Green);
     RefreshValue(this.tbAlpha, argb.Alpha);
     this.SetRGBLabels(argb);
 }
 /// <summary>
 /// The set hsv labels.
 /// </summary>
 /// <param name="HSV">
 /// The hsv.
 /// </param>
 private void SetHSVLabels(ColorHandler.HSV HSV)
 {
     RefreshText(this.lblHue, HSV.Hue);
     RefreshText(this.lblSaturation, HSV.Saturation);
     RefreshText(this.lblValue, HSV.Value);
     RefreshText(this.lblAlpha2, HSV.Alpha);
 }
 /// <summary>
 /// The set rgb labels.
 /// </summary>
 /// <param name="argb">
 /// The argb.
 /// </param>
 private void SetRGBLabels(ColorHandler.ARGB argb)
 {
     RefreshText(this.lblRed, argb.Red);
     RefreshText(this.lblBlue, argb.Blue);
     RefreshText(this.lblGreen, argb.Green);
     RefreshText(this.lblAlpha2, argb.Alpha);
     if (this._showAlpha)
     {
         this.tbHexCode.Text = string.Format("{0:X2}{1:X2}{2:X2}{3:X2}", argb.Alpha, argb.Red, argb.Green, argb.Blue);
     }
     else
     {
         this.tbHexCode.Text = string.Format("{0:X2}{1:X2}{2:X2}", argb.Red, argb.Green, argb.Blue);
     }
 }
示例#9
0
        public void Draw(Graphics g, Point mousePoint)
        {
            try
            {
                // You've moved the mouse.
                // Now update the screen to match.

                // Keep track of the previous color pointer point,
                // so you can put the mouse there in case the
                // user has clicked outside the circle.
                Point newColorPoint      = colorPoint;
                Point newBrightnessPoint = brightnessPoint;

                // Store this away for later use.
                this.g = g;

                if (currentState == MouseState.MouseUp)
                {
                    if (!mousePoint.IsEmpty)
                    {
                        if (colorRegion.IsVisible(mousePoint))
                        {
                            // Is the mouse point within the color circle?
                            // If so, you just clicked on the color wheel.
                            currentState = MouseState.ClickOnColor;
                        }
                        else if (brightnessRegion.IsVisible(mousePoint))
                        {
                            // Is the mouse point within the brightness area?
                            // You clicked on the brightness area.
                            currentState = MouseState.ClickOnBrightness;
                        }
                        else
                        {
                            // Clicked outside the color and the brightness
                            // regions. In that case, just put the
                            // pointers back where they were.
                            currentState = MouseState.ClickOutsideRegion;
                        }
                    }
                }

                switch (currentState)
                {
                case MouseState.ClickOnBrightness:
                case MouseState.DragInBrightness:
                    // Calculate new color information
                    // based on the brightness, which may have changed.
                    Point newPoint = mousePoint;
                    if (newPoint.Y < brightnessMin)
                    {
                        newPoint.Y = brightnessMin;
                    }
                    else if (newPoint.Y > brightnessMax)
                    {
                        newPoint.Y = brightnessMax;
                    }
                    newBrightnessPoint = new Point(brightnessX, newPoint.Y);
                    brightness         = (int)((brightnessMax - newPoint.Y) * brightnessScaling);
                    HSV.Value          = brightness;
                    brightness         = byte.MaxValue;
                    argb       = ColorHandler.HSVtoRGB(HSV);
                    brightness = (argb.Red + argb.Green + argb.Blue) / 3;
                    break;

                case MouseState.ClickOnColor:
                case MouseState.DragInColor:
                    // Calculate new color information
                    // based on selected color, which may have changed.
                    newColorPoint = mousePoint;

                    // Calculate x and y distance from the center,
                    // and then calculate the angle corresponding to the
                    // new location.
                    Point delta = new Point(
                        mousePoint.X - centerPoint.X, mousePoint.Y - centerPoint.Y);
                    int degrees = CalcDegrees(delta);

                    // Calculate distance from the center to the new point
                    // as a fraction of the radius. Use your old friend,
                    // the Pythagorean theorem, to calculate this value.
                    double distance = Math.Sqrt(delta.X * delta.X + delta.Y * delta.Y) / radius;

                    if (currentState == MouseState.DragInColor)
                    {
                        if (distance > 1)
                        {
                            // Mouse is down, and outside the circle, but you
                            // were previously dragging in the color circle.
                            // What to do?
                            // In that case, move the point to the edge of the
                            // circle at the correct angle.
                            distance      = 1;
                            newColorPoint = GetPoint(degrees, radius, centerPoint);
                        }
                    }

                    // Calculate the new HSV and RGB values.
                    HSV.Hue        = (degrees * 255 / 360);
                    HSV.Saturation = (int)(distance * 255);
                    brightness     = byte.MaxValue;
                    HSV.Value      = brightness;
                    argb           = ColorHandler.HSVtoRGB(HSV);
                    if (argb.Red < 0 || argb.Red > byte.MaxValue || argb.Green < 0 || argb.Green > byte.MaxValue || argb.Blue < 0 || argb.Blue > byte.MaxValue)
                    {
                        UpdateDisplay();
                        return;
                    }
                    brightness = (argb.Red + argb.Green + argb.Blue) / 3;
                    fullColor  = ColorHandler.HSVtoColor(HSV.Alpha, HSV.Hue, HSV.Saturation, 255);
                    break;
                }
                selectedColor = ColorHandler.HSVtoColor(HSV);

                // Raise an event back to the parent form,
                // so the form can update any UI it's using
                // to display selected color values.
                OnColorChanged(argb, HSV);

                // On the way out, set the new state.
                switch (currentState)
                {
                case MouseState.ClickOnBrightness:
                    currentState = MouseState.DragInBrightness;
                    break;

                case MouseState.ClickOnColor:
                    currentState = MouseState.DragInColor;
                    break;

                case MouseState.ClickOutsideRegion:
                    currentState = MouseState.DragOutsideRegion;
                    break;
                }

                // Store away the current points for next time.
                colorPoint      = newColorPoint;
                brightnessPoint = newBrightnessPoint;

                // Draw the gradients and points.
                UpdateDisplay();
            }
            catch (Exception e)
            {
                System.Windows.Forms.MessageBox.Show(e.Message);
            }
        }
 /// <summary>
 /// Initializes a new instance of the <see cref="ColorChangedEventArgs"/> class.
 /// </summary>
 /// <param name="argb">
 /// The argb.
 /// </param>
 /// <param name="hsv">
 /// The hsv.
 /// </param>
 public ColorChangedEventArgs(ColorHandler.ARGB argb, ColorHandler.HSV hsv)
 {
     this.ARGB = argb;
     this.HSV = hsv;
 }
        private void CalcCoordsAndUpdate(ColorHandler.HSV HSV)
        {
            // Convert color to real-world coordinates and then calculate
            // the various points. HSV.Hue represents the degrees (0 to 360),
            // HSV.Saturation represents the radius.
            // This procedure doesn't draw anything--it simply
            // updates class-level variables. The UpdateDisplay
            // procedure uses these values to update the screen.

            // Given the angle (HSV.Hue), and distance from
            // the center (HSV.Saturation), and the center,
            // calculate the point corresponding to
            // the selected color, on the color wheel.
            colorPoint = GetPoint((double)HSV.Hue / 255 * 360,
                (double)HSV.Saturation / 255 * radius,
                centerPoint);

            // Given the brightness (HSV.value), calculate the
            // point corresponding to the brightness indicator.
            brightnessPoint = CalcBrightnessPoint(HSV.Value);

            // Store information about the selected color.
            brightness = HSV.Value;
            selectedColor = ColorHandler.HSVtoColor(HSV);
            argb = ColorHandler.HSVtoRGB(HSV);

            // The full color is the same as HSV, except that the
            // brightness is set to full (255). This is the top-most
            // color in the brightness gradient.
            fullColor = ColorHandler.HSVtoColor(HSV.Alpha, HSV.Hue, HSV.Saturation, 255);
        }
 protected void OnColorChanged(ColorHandler.ARGB argb, ColorHandler.HSV HSV)
 {
     var e = new ColorChangedEventArgs(argb, HSV);
     ColorChanged(this, e);
 }
 public void Draw(Graphics g, ColorHandler.ARGB argb)
 {
     // Given RGB values, calculate HSV and then update the screen.
     this.g = g;
     hsv = ColorHandler.RGBtoHSV(argb);
     CalcCoordsAndUpdate(hsv);
     UpdateDisplay();
 }
 public void Draw(Graphics g, ColorHandler.HSV HSV)
 {
     // Given HSV values, update the screen.
     this.g = g;
     this.hsv = HSV;
     CalcCoordsAndUpdate(this.hsv);
     UpdateDisplay();
 }
 public ColorChangedEventArgs(ColorHandler.ARGB argb, ColorHandler.HSV HSV)
 {
     ARGB = argb;
     this.HSV = HSV;
 }