/// <summary> /// Fills in the content of the control showing all values of Luminance (0 to 100%) for the given /// Hue and Saturation. /// </summary> protected void Draw_Style_Luminance() { Graphics g = Graphics.FromImage(m_Output); float3 HSL = this.HSL; // Use the H and S values of the current color (m_HSL) for (int i = 0; i < this.Height - 8; i++) // i represents the current line of pixels we want to draw horizontally { HSL.z = 1.0f - (float)i / (Height - 8); // L (Luminance) is based on the current vertical position Pen pen = new Pen(AdobeColors.HSL_to_RGB_LDR(HSL)); // Get the Color for this line g.DrawLine(pen, 11, i + 4, this.Width - 11, i + 4); // Draw the line and loop back for next line pen.Dispose(); } g.Dispose(); }
// The following functions do the real work of the control, drawing the primary content (the area between the slider) // /// <summary> /// Fills in the content of the control showing all values of Hue (from 0 to 360) /// </summary> protected void Draw_Style_Hue() { Graphics g = Graphics.FromImage(m_Output); float3 HSL = new float3(); HSL.y = 1.0f; // S and L will both be at 100% for this DrawStyle HSL.z = 1.0f; for (int i = 0; i < this.Height - 8; i++) // i represents the current line of pixels we want to draw horizontally { HSL.x = 1.0f - (float)i / (Height - 8); // H (hue) is based on the current vertical position Pen pen = new Pen(AdobeColors.HSL_to_RGB_LDR(HSL)); // Get the Color for this line g.DrawLine(pen, 11, i + 4, this.Width - 11, i + 4); // Draw the line and loop back for next line pen.Dispose(); } g.Dispose(); }
/// <summary> /// Draws the content of the control filling in all color values with the provided Luminance or Brightness value. /// </summary> protected void Draw_Style_Brightness() { Graphics g = Graphics.FromImage(m_Output); float3 HSL = this.HSL; float3 hsl_start = float3.Zero; float3 hsl_end = float3.Zero; hsl_start.z = HSL.z; hsl_end.z = HSL.z; hsl_start.y = 1.0f; hsl_end.y = 0.0f; for (int i = 0; i < Width - 4; i++) // For each vertical line in the control: { hsl_start.x = (float)i / (Width - 4); // Calculate Hue at this line (Saturation and Luminance are constant) hsl_end.x = hsl_start.x; LinearGradientBrush br = new LinearGradientBrush(new System.Drawing.Rectangle(2, 2, 1, this.Height - 4), AdobeColors.HSL_to_RGB_LDR(hsl_start), AdobeColors.HSL_to_RGB_LDR(hsl_end), 90, false); g.FillRectangle(br, new System.Drawing.Rectangle(i + 2, 2, 1, this.Height - 4)); } }
/// <summary> /// Draws the content of the control filling in all color values with the provided Hue value. /// </summary> protected void Draw_Style_Hue() { Graphics g = Graphics.FromImage(m_Output); float3 HSL = this.HSL; float3 hsl_start = float3.Zero; float3 hsl_end = float3.Zero; hsl_start.x = HSL.x; hsl_end.x = HSL.x; hsl_start.y = 0.0f; hsl_end.y = 1.0f; for (int i = 0; i < this.Height - 4; i++) // For each horizontal line in the control: { hsl_start.z = 1.0f - (float)i / (Height - 4); // Calculate luminance at this line (Hue and Saturation are constant) hsl_end.z = hsl_start.z; LinearGradientBrush br = new LinearGradientBrush(new System.Drawing.Rectangle(2, 2, this.Width - 4, 1), AdobeColors.HSL_to_RGB_LDR(hsl_start), AdobeColors.HSL_to_RGB_LDR(hsl_end), 0, false); g.FillRectangle(br, new System.Drawing.Rectangle(2, i + 2, this.Width - 4, 1)); } }
/// <summary> /// Redraws only the content over the marker /// </summary> protected void ClearMarker() { Graphics g = Graphics.FromImage(m_Output); // Determine the area that needs to be redrawn int start_x, start_y, end_x, end_y; int red = 0; int green = 0; int blue = 0; float3 hsl_start = float3.Zero; float3 hsl_end = float3.Zero; // Find the markers corners start_x = m_iMarker_X - 5; start_y = m_iMarker_Y - 5; end_x = m_iMarker_X + 5; end_y = m_iMarker_Y + 5; // Adjust the area if part of it hangs outside the content area if (start_x < 0) { start_x = 0; } if (start_y < 0) { start_y = 0; } if (end_x > this.Width - 4) { end_x = this.Width - 4; } if (end_y > this.Height - 4) { end_y = this.Height - 4; } float3 HSL = this.HSL; // Redraw the content based on the current draw style: // The code is getting a little messy from here switch (m_DrawStyle) { // S=0,S=1,S=2,S=3.....S=100 // L=100 // L=99 // L=98 Drawstyle // L=97 Hue // ... // L=0 case ColorPickerForm.DRAW_STYLE.Hue: hsl_start.x = HSL.x; hsl_end.x = HSL.x; // Hue is constant hsl_start.y = (float)start_x / (Width - 4); // Because we're drawing horizontal lines, s will not change hsl_end.y = (float)end_x / (Width - 4); // from line to line for (int i = start_y; i <= end_y; i++) // For each horizontal line: { hsl_start.z = 1.0f - (float)i / (Height - 4); // Brightness (L) WILL change for each horizontal hsl_end.z = hsl_start.z; // line drawn LinearGradientBrush br = new LinearGradientBrush(new System.Drawing.Rectangle(start_x + 1, i + 2, end_x - start_x + 1, 1), AdobeColors.HSL_to_RGB_LDR(hsl_start), AdobeColors.HSL_to_RGB_LDR(hsl_end), 0, false); g.FillRectangle(br, new System.Drawing.Rectangle(start_x + 2, i + 2, end_x - start_x + 1, 1)); } break; // H=0,H=1,H=2,H=3.....H=360 // L=100 // L=99 // L=98 Drawstyle // L=97 Saturation // ... // L=0 case ColorPickerForm.DRAW_STYLE.Saturation: hsl_start.y = HSL.y; hsl_end.y = HSL.y; // Saturation is constant hsl_start.z = 1.0f - (float)start_y / (Height - 4); // Because we're drawing vertical lines, L will hsl_end.z = 1.0f - (float)end_y / (Height - 4); // not change from line to line for (int i = start_x; i <= end_x; i++) // For each vertical line: { hsl_start.x = (float)i / (Width - 4); // Hue (H) WILL change for each vertical hsl_end.x = hsl_start.x; // line drawn LinearGradientBrush br = new LinearGradientBrush(new System.Drawing.Rectangle(i + 2, start_y + 1, 1, end_y - start_y + 2), AdobeColors.HSL_to_RGB_LDR(hsl_start), AdobeColors.HSL_to_RGB_LDR(hsl_end), 90, false); g.FillRectangle(br, new System.Drawing.Rectangle(i + 2, start_y + 2, 1, end_y - start_y + 1)); } break; // H=0,H=1,H=2,H=3.....H=360 // S=100 // S=99 // S=98 Drawstyle // S=97 Brightness // ... // S=0 case ColorPickerForm.DRAW_STYLE.Brightness: hsl_start.z = HSL.z; hsl_end.z = HSL.z; // Luminance is constant hsl_start.y = 1.0f - (float)start_y / (Height - 4); // Because we're drawing vertical lines, S will hsl_end.y = 1.0f - (float)end_y / (Height - 4); // not change from line to line for (int i = start_x; i <= end_x; i++) // For each vertical line: { hsl_start.x = (float)i / (Width - 4); // Hue (H) WILL change for each vertical hsl_end.x = hsl_start.x; // line drawn LinearGradientBrush br = new LinearGradientBrush(new System.Drawing.Rectangle(i + 2, start_y + 1, 1, end_y - start_y + 2), AdobeColors.HSL_to_RGB_LDR(hsl_start), AdobeColors.HSL_to_RGB_LDR(hsl_end), 90, false); g.FillRectangle(br, new System.Drawing.Rectangle(i + 2, start_y + 2, 1, end_y - start_y + 1)); } break; // B=0,B=1,B=2,B=3.....B=100 // G=100 // G=99 // G=98 Drawstyle // G=97 Red // ... // G=0 case ColorPickerForm.DRAW_STYLE.Red: red = AdobeColors.ConvertHDR2LDR(m_RGB).R; // Red is constant int start_b = Round(255 * (double)start_x / (this.Width - 4)); // Because we're drawing horizontal lines, B int end_b = Round(255 * (double)end_x / (this.Width - 4)); // will not change from line to line for (int i = start_y; i <= end_y; i++) // For each horizontal line: { green = Round(255 - (255 * (double)i / (this.Height - 4))); // green WILL change for each horizontal line drawn LinearGradientBrush br = new LinearGradientBrush(new System.Drawing.Rectangle(start_x + 1, i + 2, end_x - start_x + 1, 1), Color.FromArgb(red, green, start_b), Color.FromArgb(red, green, end_b), 0, false); g.FillRectangle(br, new System.Drawing.Rectangle(start_x + 2, i + 2, end_x - start_x + 1, 1)); } break; // B=0,B=1,B=2,B=3.....B=100 // R=100 // R=99 // R=98 Drawstyle // R=97 Green // ... // R=0 case ColorPickerForm.DRAW_STYLE.Green: green = AdobeColors.ConvertHDR2LDR(m_RGB).G; // Green is constant int start_b2 = Round(255 * (double)start_x / (this.Width - 4)); // Because we're drawing horizontal lines, B int end_b2 = Round(255 * (double)end_x / (this.Width - 4)); // will not change from line to line for (int i = start_y; i <= end_y; i++) // For each horizontal line: { red = Round(255 - (255 * (double)i / (this.Height - 4))); // red WILL change for each horizontal line drawn LinearGradientBrush br = new LinearGradientBrush(new System.Drawing.Rectangle(start_x + 1, i + 2, end_x - start_x + 1, 1), Color.FromArgb(red, green, start_b2), Color.FromArgb(red, green, end_b2), 0, false); g.FillRectangle(br, new System.Drawing.Rectangle(start_x + 2, i + 2, end_x - start_x + 1, 1)); } break; // R=0,R=1,R=2,R=3.....R=100 // G=100 // G=99 // G=98 Drawstyle // G=97 Blue // ... // G=0 case ColorPickerForm.DRAW_STYLE.Blue: blue = AdobeColors.ConvertHDR2LDR(m_RGB).B; // Blue is constant int start_r = Round(255 * (double)start_x / (this.Width - 4)); // Because we're drawing horizontal lines, R int end_r = Round(255 * (double)end_x / (this.Width - 4)); // will not change from line to line for (int i = start_y; i <= end_y; i++) // For each horizontal line: { green = Round(255 - (255 * (double)i / (this.Height - 4))); // green WILL change for each horizontal line drawn LinearGradientBrush br = new LinearGradientBrush(new System.Drawing.Rectangle(start_x + 1, i + 2, end_x - start_x + 1, 1), Color.FromArgb(start_r, green, blue), Color.FromArgb(end_r, green, blue), 0, false); g.FillRectangle(br, new System.Drawing.Rectangle(start_x + 2, i + 2, end_x - start_x + 1, 1)); } break; } }