public ColorVerticalSliderUserControl()
{
InitializeComponent();
mHSL = new ColorSpaceConverter.HSL(1.0, 1.0, 1.0);
mRGB = ColorSpaceConverter.HSL2RGB(mHSL);
mDrawStyle = EDrawStyle.Hue;
mSliderPos = 0;
}
public ColorPaletteUserControl()
{
InitializeComponent();
mHSL = new ColorSpaceConverter.HSL(1.0, 1.0, 1.0);
mRGB = ColorSpaceConverter.HSL2RGB(mHSL);
mDrawStyle = EDrawStyle.Hue;
mMarkerPos = new Point(0, 0);
}
public ColorPickForm()
{
InitializeComponent();
mColorPicked = new Color();
mColorHSL = new ColorSpaceConverter.HSL();
mColorCMYK = new ColorSpaceConverter.CMYK();
radioButtonHSL_H.Checked = true; ///< 默认模式
// 注册事件响应
colorPaletteUserControl.Scroll += new System.EventHandler(this.colorPaletteUserControl_Scroll);
colorVerticalSliderUserControl.Scroll += new System.EventHandler(this.colorVerticalSliderUserControl_Scroll);
// 设置黑色为默认颜色
ColorPicked = Color.FromArgb(0, 0, 0);
}
private void textBoxRGB_R_Leave(object sender, EventArgs e)
{
string colorText = textBoxRGB_R.Text;
// 非法字符检测
bool hasIllegalChar = false;
if (colorText.Length <= 0)
{
hasIllegalChar = true;
}
else
{
foreach (char letter in colorText)
{
if (!char.IsNumber(letter))
{
hasIllegalChar = true;
break;
}
}
}
// 计算新的颜色值
if (hasIllegalChar)
{
MessageBox.Show("Red must be a number value between 0 and 255!");
UpdateTextBoxes(); ///< 更新文本框
}
else
{
int colorValue = int.Parse(colorText);
if (colorValue < 0)
{
MessageBox.Show("Red must be a number value between 0 and 255, Closese value inserted!");
textBoxRGB_R.Text = "0";
mColorPicked = Color.FromArgb(0, mColorPicked.G, mColorPicked.B);
}
else if (colorValue > 255)
{
MessageBox.Show("Red must be a number value between 0 and 255, Closese value inserted!");
textBoxRGB_R.Text = "255";
mColorPicked = Color.FromArgb(255, mColorPicked.G, mColorPicked.B);
}
else
{
mColorPicked = Color.FromArgb(colorValue, mColorPicked.G, mColorPicked.B);
}
mColorHSL = Common.ColorSpaceConverter.RGB2HSL(mColorPicked);
mColorCMYK = Common.ColorSpaceConverter.RGB2CMYK(mColorPicked);
colorPaletteUserControl.RGB = mColorPicked; ///< 用RGB值更新主控件
colorVerticalSliderUserControl.RGB = mColorPicked; ///< 用RGB值更新辅助控件
UpdateTextBoxes(); ///< 更新文本框
}
}
private void colorVerticalSliderUserControl_Scroll(object sender, System.EventArgs e)
{
// 从辅助颜色控件获取当前颜色
mColorPicked = colorVerticalSliderUserControl.RGB;
mColorHSL =colorVerticalSliderUserControl.HSL;
mColorCMYK = Common.ColorSpaceConverter.RGB2CMYK(colorVerticalSliderUserControl.RGB);
// 更新界面
UpdateTextBoxes();
// 用HSL值更新主控件(数值精度比较高)
colorPaletteUserControl.HSL = mColorHSL;
// 发送改变消息
if (OnColorChanged != null)
OnColorChanged(this, e);
}
private void ResetColor()
{
int red, green, blue;
switch (mDrawStyle)
{
case EDrawStyle.Hue:
mHSL.S = mMarkerPos.X / (Width - 4.0);
mHSL.L = 1.0 - mMarkerPos.Y / (Height - 4.0);
mRGB = ColorSpaceConverter.HSL2RGB(mHSL);
break;
case EDrawStyle.Saturation:
mHSL.H = mMarkerPos.X / (Width - 4.0);
mHSL.L = 1.0 - mMarkerPos.Y / (Height - 4.0);
mRGB = ColorSpaceConverter.HSL2RGB(mHSL);
break;
case EDrawStyle.Luminance:
mHSL.H = mMarkerPos.X / (Width - 4.0);
mHSL.S = 1.0 - mMarkerPos.Y / (Height - 4.0);
mRGB = ColorSpaceConverter.HSL2RGB(mHSL);
break;
case EDrawStyle.Red:
blue = Round(255 * mMarkerPos.X / (Width - 4.0));
green = Round(255 * (1.0 - mMarkerPos.Y / (Height - 4.0)));
mRGB = Color.FromArgb(mRGB.R, green, blue);
mHSL = ColorSpaceConverter.RGB2HSL(mRGB);
break;
case EDrawStyle.Green:
blue = Round(255 * mMarkerPos.X / (Width - 4.0));
red = Round(255 * (1.0 - mMarkerPos.Y / (Height - 4.0)));
mRGB = Color.FromArgb(red, mRGB.G, blue);
mHSL = ColorSpaceConverter.RGB2HSL(mRGB);
break;
case EDrawStyle.Blue:
red = Round(255 * mMarkerPos.X / (Width - 4.0));
green = Round(255 * (1.0 - mMarkerPos.Y / (Height - 4.0)));
mRGB = Color.FromArgb(red, green, mRGB.B);
mHSL = ColorSpaceConverter.RGB2HSL(mRGB);
break;
};
}
// 内部函数, 获取当前位置颜色
private ColorSpaceConverter.HSL GetColor(Point pos)
{
int red, green, blue;
ColorSpaceConverter.HSL hsl = new ColorSpaceConverter.HSL();
switch (mDrawStyle)
{
case EDrawStyle.Hue:
hsl.H = mHSL.H;
hsl.S = pos.X / (Width - 4.0);
hsl.L = 1.0 - pos.Y / (Height - 4.0);
break;
case EDrawStyle.Saturation:
hsl.S = mHSL.S;
hsl.H = pos.X / (Width - 4.0);
hsl.L = 1.0 - pos.Y / (Height - 4.0);
break;
case EDrawStyle.Luminance:
hsl.L = mHSL.L;
hsl.H = pos.X / (Width - 4.0);
hsl.S = 1.0 - pos.Y / (Height - 4.0);
break;
case EDrawStyle.Red:
blue = Round(255 * mMarkerPos.X / (Width - 4.0));
green = Round(255 * (1.0 - mMarkerPos.Y / (Height - 4.0)));
hsl = ColorSpaceConverter.RGB2HSL(Color.FromArgb(mRGB.R, green, blue));
break;
case EDrawStyle.Green:
blue = Round(255 * mMarkerPos.X / (Width - 4.0));
red = Round(255 * (1.0 - mMarkerPos.Y / (Height - 4.0)));
hsl = ColorSpaceConverter.RGB2HSL(Color.FromArgb(red, mRGB.G, blue));
break;
case EDrawStyle.Blue:
red = Round(255 * mMarkerPos.X / (Width - 4.0));
green = Round(255 * (1.0 - mMarkerPos.Y / (Height - 4.0)));
hsl = ColorSpaceConverter.RGB2HSL(Color.FromArgb(red, green, mRGB.B));
break;
};
return hsl;
}
private void DrawContent_Saturation()
{
// H=0, H=1, H=2, H=3, H=4 ... H=100
// L=100
// L=99
// L=98 DrawStyleSaturation
// L=97
// ...
// L=0
Bitmap memBitmap = new Bitmap(ClientRectangle.Width, ClientRectangle.Height);
Graphics g = Graphics.FromImage(memBitmap);
ColorSpaceConverter.HSL startHSL = new ColorSpaceConverter.HSL();
ColorSpaceConverter.HSL endHSL = new ColorSpaceConverter.HSL();
startHSL.S = mHSL.S;
startHSL.L = 1.0;
endHSL.S = mHSL.S;
endHSL.L = 0.0;
for (int i = 0; i < Width - 4; ++i)
{
startHSL.H = i / (Width - 4.0);
endHSL.H = startHSL.H;
LinearGradientBrush brush = new LinearGradientBrush(
new Rectangle(2, 2, 1, Height - 4),
ColorSpaceConverter.HSL2RGB(startHSL),
ColorSpaceConverter.HSL2RGB(endHSL),
90, false);
g.FillRectangle(brush, new Rectangle(i + 2, 2, 1, Height - 4));
}
DrawMarkerOnCanvas(g, mMarkerPos);
PaintEventArgs e = new PaintEventArgs(CreateGraphics(), ClientRectangle);
e.Graphics.DrawImage(memBitmap, 0, 0);
memBitmap.Dispose();
g.Dispose();
}
// 内部函数
private void DrawContent_Hue()
{
// S=0, S=1, S=2, S=3, S=4 ... S=100
// L=100
// L=99
// L=98 DrawStyleHue
// L=97
// ...
// L=0
Bitmap memBitmap = new Bitmap(ClientRectangle.Width, ClientRectangle.Height);
Graphics g = Graphics.FromImage(memBitmap);
ColorSpaceConverter.HSL startHSL = new ColorSpaceConverter.HSL();
ColorSpaceConverter.HSL endHSL = new ColorSpaceConverter.HSL();
startHSL.H = mHSL.H;
startHSL.S = 0.0;
endHSL.H = mHSL.H;
endHSL.S = 1.0;
// For each Horizontal line in the control,
// caculate luminance at this line (Hue and Saturation are constant)
for (int i = 0; i < Height - 4; ++i)
{
startHSL.L = 1.0 - i / (Height - 4.0);
endHSL.L = startHSL.L;
LinearGradientBrush brush = new LinearGradientBrush(
new Rectangle(2, 2, Width - 4, 1),
ColorSpaceConverter.HSL2RGB(startHSL),
ColorSpaceConverter.HSL2RGB(endHSL),
0, false);
g.FillRectangle(brush, new Rectangle(2, i + 2, Width - 4, 1));
}
//
DrawMarkerOnCanvas(g, mMarkerPos);
//
PaintEventArgs e = new PaintEventArgs(CreateGraphics(), ClientRectangle);
e.Graphics.DrawImage(memBitmap, 0, 0);
memBitmap.Dispose();
g.Dispose();
}
// 内部函数,重新绘制当前位置的Marker为背景色
private void ClearMarker()
{
// Determine the area that needs to be redrawn, find the markers corners
int startX = mMarkerPos.X - 5;
int startY = mMarkerPos.Y - 5;
int endX = mMarkerPos.X + 5;
int endY = mMarkerPos.Y + 5;
// Adjust the area if part of it hangs outside the content area
if (startX < 0) startX = 0;
if (startY < 0) startY = 0;
if (endX > Width - 4) endX = Width - 4;
if (endY > Height - 4) endY = Height - 4;
// Redraw the content based on the current draw style
ColorSpaceConverter.HSL startHSL = new ColorSpaceConverter.HSL();
ColorSpaceConverter.HSL endHSL = new ColorSpaceConverter.HSL();
Graphics g = this.CreateGraphics();
int red, green, blue;
switch (mDrawStyle)
{
// S=0, S=1, S=2, S=3, S=4 ... S=100
// L=100
// L=99
// L=98 DrawStyleHue
// L=97
// ...
// L=0
case EDrawStyle.Hue :
startHSL.H = mHSL.H; ///< Hue is constant
endHSL.H = mHSL.H; ///< Hue is constant
startHSL.S = startX / (Width - 4.0); ///< Because we are drawing horizontal lines,
endHSL.S = endX / (Width - 4.0); ///< S not change from line to line
for (int i = startY; i <= endY; ++i) ///< for each horizontal line
{
startHSL.L = 1 - i / (Height - 4.0); ///< Hue will change for each horizontal
endHSL.L = startHSL.L; ///< line drawn
LinearGradientBrush brush = new LinearGradientBrush(
new Rectangle(startX + 1, i + 2, endX - startX + 1, 1),
ColorSpaceConverter.HSL2RGB(startHSL),
ColorSpaceConverter.HSL2RGB(endHSL),
0, false);
g.FillRectangle(brush, new Rectangle(startX + 2, i + 2, endX - startX + 1, 1));
}
break;
// H=0, H=1, H=2, H=3, H=4 ... H=360
// L=100
// L=99
// L=98 DrawStyleSaturation
// L=97
// ...
// L=0
case EDrawStyle.Saturation:
startHSL.S = mHSL.S; ///< Saturation is constant
endHSL.S = mHSL.S; ///< Saturation is constant
startHSL.L = 1 - startY / (Height - 4.0); ///< Because we are drawing vertical lines,
endHSL.L = 1 - endY / (Height - 4.0); ///< L not change from line to line
for (int i = startX; i <= endX; ++i) ///< for each vertical line
{
startHSL.H = i / (Width - 4.0); ///< Hue will change for each vertical
endHSL.H = startHSL.H; ///< line drawn
LinearGradientBrush brush = new LinearGradientBrush(
new Rectangle(i + 2, startY + 1, 1, endY - startY + 2),
ColorSpaceConverter.HSL2RGB(startHSL),
ColorSpaceConverter.HSL2RGB(endHSL),
90, false);
g.FillRectangle(brush, new Rectangle(i + 2, startY + 2, 1, endY - startY + 1));
}
break;
// H=0, H=1, H=2, H=3, H=4 ... H=100
// S=100
// S=99
// S=98 DrawStyleLuminance
// S=97
// ...
// S=0
case EDrawStyle.Luminance:
startHSL.L = mHSL.L; ///< Luminance is constant
endHSL.L = mHSL.L; ///< Luminance is constant
startHSL.S = 1 - startY / (Height - 4.0); ///< Because we are drawing vertical lines
endHSL.S = 1 - endY / (Height - 4.0); ///< S not change from line to line
for (int i = startX; i <= endX; ++i) ///< for each vertical line
{
startHSL.H = i / (Width - 4.0); ///< Luminance will change for each vertical
endHSL.H = startHSL.H; ///< line drawn
LinearGradientBrush brush = new LinearGradientBrush(
new Rectangle(i + 2, startY+1, 1, endY-startY+2),
ColorSpaceConverter.HSL2RGB(startHSL),
ColorSpaceConverter.HSL2RGB(endHSL),
90, false);
g.FillRectangle(brush, new Rectangle(i + 2, startY + 2, 1, endY - startY + 1));
}
break;
// B=0, B=1, B=2, B=3, B=4 ... B=100
// G=100
// G=99
// G=98 DrawStyleRed
// G=97
// ...
// G=0
case EDrawStyle.Red:
red = mRGB.R; ///< Red is constant
int startB = Round(255 * startX / (Width - 4.0));
int endB = Round(255 * endX / (Width - 4.0));
for (int i = startY; i <= endY; ++i)
{
green = Round(255 - (255 * i / (Height - 4.0)));
LinearGradientBrush brush = new LinearGradientBrush(
new Rectangle(startX + 1, i + 2, endX-startX + 1, 1),
Color.FromArgb(red, green, startB),
Color.FromArgb(red, green, endB),
0, false);
g.FillRectangle(brush, new Rectangle(startX + 2, i + 2, endX - startX + 1, 1));
}
break;
// B=0, B=1, B=2, B=3, B=4 ... B=100
// R=100
// R=99
// R=98 DrawStyleGreen
// R=97
// ...
// R=0
case EDrawStyle.Green:
green = mRGB.G;
int startB2 = Round(255 * startX / (Width - 4.0));
int endB2 = Round(255 * endX / (Width - 4.0));
for (int i = startY; i <= endY; ++i)
{
red = Round(255 - (255 * i / (Height - 4.0)));
LinearGradientBrush brush = new LinearGradientBrush(
new Rectangle(startX + 1, i + 2, endX - startX + 1, 1),
Color.FromArgb(red, green, startB2),
Color.FromArgb(red, green, endB2),
0, false);
g.FillRectangle(brush, new Rectangle(startX + 2, i + 2, endX - startX + 1, 1));
}
break;
// R=0, R=1, R=2, R=3, R=4 ... R=100
// G=100
// G=99
// G=98 DrawStyleGreen
// G=97
// ...
// G=0
case EDrawStyle.Blue:
blue = mRGB.B;
int startR = Round(255 * startX / (Width - 4.0));
int endR = Round(255 * endX / (Width - 4.0));
for (int i = startY; i <= endY; ++i)
{
green = Round(255 - (255 * i / (Height - 4.0)));
LinearGradientBrush brush = new LinearGradientBrush(
new Rectangle(startX + 1, i + 2, endX - startX + 1, 1),
Color.FromArgb(startR, green, blue),
Color.FromArgb(endR, green, blue),
0, false);
g.FillRectangle(brush, new Rectangle(startX + 2, i + 2, endX - startX + 1, 1));
}
break;
}
}
private void ResetColor()
{
switch (mDrawStyle)
{
case EDrawStyle.Hue:
mHSL.H = 1 - mSliderPos / (Height - 9.0);
mRGB = ColorSpaceConverter.HSL2RGB(mHSL);
break;
case EDrawStyle.Saturation:
mHSL.S = 1 - mSliderPos / (Height - 9.0);
mRGB = ColorSpaceConverter.HSL2RGB(mHSL);
break;
case EDrawStyle.Luminance:
mHSL.L = 1 - mSliderPos / (Height - 9.0);
mRGB = ColorSpaceConverter.HSL2RGB(mHSL);
break;
case EDrawStyle.Red:
mRGB = Color.FromArgb(255 - Round(255 * mSliderPos / (Height - 9.0)), mRGB.G, mRGB.B);
mHSL = ColorSpaceConverter.RGB2HSL(mRGB);
break;
case EDrawStyle.Green:
mRGB = Color.FromArgb(mRGB.R, 255 - Round(255 * mSliderPos / (Height - 9.0)), mRGB.B);
mHSL = ColorSpaceConverter.RGB2HSL(mRGB);
break;
case EDrawStyle.Blue:
mRGB = Color.FromArgb(mRGB.R, mRGB.G, 255 - Round(255 * mSliderPos / (Height - 9.0)));
mHSL = ColorSpaceConverter.RGB2HSL(mRGB);
break;
};
}
// Fills in the content of the control showing all values of Saturation (from 0 to 100%)
// for the given Hue and Luminance
private void DrawContent_Saturation()
{
Bitmap memBitmap = new Bitmap(ClientRectangle.Width, ClientRectangle.Height);
Graphics g = Graphics.FromImage(memBitmap);
ColorSpaceConverter.HSL hsl = new ColorSpaceConverter.HSL();
hsl.H = mHSL.H; ///< Use the H and L values of the current color
hsl.L = mHSL.L; ///<
for (int i = 0; i < Height - 8; ++i) ///< i represents the current line of pixels we want to draw horizontally
{
hsl.S = 1 - i / (Height - 8.0); ///< S(Saturation) is based on the current vertical position
Pen pencil = new Pen(ColorSpaceConverter.HSL2RGB(hsl)); ///< Get the color for this line
g.DrawLine(pencil, 11, i + 4, Width - 11, i + 4);
}
PaintEventArgs e = new PaintEventArgs(CreateGraphics(), ClientRectangle);
e.Graphics.DrawImage(memBitmap, 0, 0);
memBitmap.Dispose();
g.Dispose();
}
// Fills in the content of the control showing all values of Luminance (from 0 to 100%)
// for the given Huw and Saturation
private void DrawContent_Luminance()
{
Bitmap memBitmap = new Bitmap(ClientRectangle.Width, ClientRectangle.Height);
Graphics g = Graphics.FromImage(memBitmap);
ColorSpaceConverter.HSL hsl = new ColorSpaceConverter.HSL();
hsl.H = mHSL.H; ///< Use the H and S values of the current color
hsl.S = mHSL.S; ///<
for (int i = 0; i < Height - 8; ++i)
{
hsl.L = 1 - i / (Height - 8.0);
Pen pencil = new Pen(ColorSpaceConverter.HSL2RGB(hsl));
g.DrawLine(pencil, 11, i + 4, Width - 11, i + 4);
}
PaintEventArgs e = new PaintEventArgs(CreateGraphics(), ClientRectangle);
e.Graphics.DrawImage(memBitmap, 0, 0);
memBitmap.Dispose();
g.Dispose();
}
// Fills in the content of the control showing all values of Hue (from 0 to 360)
private void DrawContent_Hue()
{
Bitmap memBitmap = new Bitmap(ClientRectangle.Width, ClientRectangle.Height);
Graphics g = Graphics.FromImage(memBitmap);
ColorSpaceConverter.HSL hsl = new ColorSpaceConverter.HSL();
hsl.S = 1.0; ///< S and L will both be at 100% for this DrawStyle
hsl.L = 1.0; ///<
for (int i = 0; i < Height - 8; ++i) ///< i represents the current line of pixels we want to draw horizontally
{
hsl.H = 1.0 - i / (Height - 8.0);
Pen pencil = new Pen(ColorSpaceConverter.HSL2RGB(hsl)); ///< H(Hue) is based on the current vertical position
g.DrawLine(pencil, 11, i + 4, Width - 11, i + 4); ///< Get the color for this line
}
PaintEventArgs e = new PaintEventArgs(CreateGraphics(), ClientRectangle);
e.Graphics.DrawImage(memBitmap, 0, 0);
memBitmap.Dispose();
g.Dispose();
}
