public Bitmap Shadow(Bitmap src, Color color, int width, double opacity = 0.6f, double angle = 315)
{
Bitmap result = new Bitmap(src);
#region Get DPI
float dpiX = 96f;
float dpiY = 96f;
using (Graphics g = Graphics.FromHwnd(IntPtr.Zero))
{
dpiX = g.DpiX;
dpiY = g.DpiY;
}
#endregion
int offset = 4 * width;
#region Create Effect
var effect = new Media.Effects.DropShadowEffect();
effect.BlurRadius = width;
effect.Color = color.ToMediaColor();
effect.Direction = angle;
effect.Opacity = opacity;
effect.ShadowDepth = width;
//var effect = new Media.Effects.BlurEffect();
//effect.Radius = 50;
#endregion
#region Draw source bitmap to DrawingVisual
Media.DrawingVisual drawingVisual = new Media.DrawingVisual();
drawingVisual.Effect = effect;
using (var drawingContext = drawingVisual.RenderOpen())
{
System.Windows.Rect dRect = new System.Windows.Rect(2 * width, 2 * width, src.Width, src.Height);
drawingContext.DrawImage(src.ToBitmapSource(), dRect);
drawingContext.Close();
}
#endregion
#region Render the DrawingVisual into a RenderTargetBitmap
var rtb = new Media.Imaging.RenderTargetBitmap(
src.Width + offset, src.Height + offset,
dpiX, dpiY,
Media.PixelFormats.Pbgra32);
rtb.Render(drawingVisual);
#endregion
#region Create a System.Drawing.Bitmap
var bitmap = new Bitmap(rtb.PixelWidth, rtb.PixelHeight, PixelFormat.Format32bppArgb);
#endregion
#region Copy the RenderTargetBitmap pixels into the bitmap's pixel buffer
var pdata = bitmap.LockBits(
new Rectangle(0, 0, bitmap.Width, bitmap.Height),
ImageLockMode.WriteOnly,
bitmap.PixelFormat);
rtb.CopyPixels(System.Windows.Int32Rect.Empty,
pdata.Scan0, pdata.Stride * pdata.Height, pdata.Stride);
bitmap.UnlockBits(pdata);
#endregion
#region Crop Transparent Area
var rect = bitmap.ContentBound();
result = new Bitmap(rect.Width, rect.Height, bitmap.PixelFormat);
using (var g = Graphics.FromImage(result))
{
g.DrawImage(bitmap, 0, 0, rect, GraphicsUnit.Pixel);
}
#endregion
return(result);
}
public Bitmap Shader(Bitmap src, double radius = 10)
{
Bitmap result = new Bitmap(src);
#region Get DPI
float dpiX = 96f;
float dpiY = 96f;
using (Graphics g = Graphics.FromHwnd(IntPtr.Zero))
{
dpiX = g.DpiX;
dpiY = g.DpiY;
}
#endregion
int width = (int)Math.Ceiling(radius);
int offset = 4 * width;
#region Create Effect
var effect = new MyShaderEffect();
//Media.Effects.ShaderRenderMode = Media.Effects.ShaderRenderMode.Auto;
//effect.
#endregion
#region Draw source bitmap to DrawingVisual
Media.DrawingVisual drawingVisual = new Media.DrawingVisual();
drawingVisual.Effect = effect;
using (var drawingContext = drawingVisual.RenderOpen())
{
//drawingContext.PushEffect( new Media.Effects.BlurBitmapEffect(), null );
System.Windows.Rect dRect = new System.Windows.Rect(2 * width, 2 * width, src.Width, src.Height);
drawingContext.DrawImage(src.ToBitmapSource(), dRect);
drawingContext.Close();
}
#endregion
#region Render the DrawingVisual into a RenderTargetBitmap
var rtb = new Media.Imaging.RenderTargetBitmap(
src.Width + offset, src.Height * offset,
dpiX, dpiY,
Media.PixelFormats.Pbgra32);
rtb.Render(drawingVisual);
#endregion
#region Create a System.Drawing.Bitmap
var bitmap = new Bitmap(rtb.PixelWidth, rtb.PixelHeight, PixelFormat.Format32bppArgb);
#endregion
#region Copy the RenderTargetBitmap pixels into the bitmap's pixel buffer
var pdata = bitmap.LockBits(
new Rectangle(0, 0, bitmap.Width, bitmap.Height),
ImageLockMode.WriteOnly,
bitmap.PixelFormat);
rtb.CopyPixels(System.Windows.Int32Rect.Empty,
pdata.Scan0, pdata.Stride * pdata.Height, pdata.Stride);
bitmap.UnlockBits(pdata);
#endregion
#region Crop Opaque
var rect = bitmap.ContentBound();
rect.Width = rect.Width < 0 ? 1 : rect.Width + 2;
rect.Height = rect.Height < 0 ? 1 : rect.Height + 2;
result = new Bitmap(rect.Width, rect.Height, bitmap.PixelFormat);
using (var g = Graphics.FromImage(result))
{
g.DrawImage(bitmap, 0, 0, rect, GraphicsUnit.Pixel);
}
#endregion
return(result);
}
/*
* // Windows Forms版 TODO: 直書きあり
* public static void DrawString(string str, double fontSize)
* {
* var window = System.Windows.Application.Current.MainWindow;
*
* double[] glDoubleColor = new double[4];
* GL.GetDouble(GetPName.CurrentColor, glDoubleColor);
* byte glR = (byte)(glDoubleColor[0] * 255);
* byte glG = (byte)(glDoubleColor[1] * 255);
* byte glB = (byte)(glDoubleColor[2] * 255);
* byte glA = (byte)(glDoubleColor[3] * 255); //255;
* var glColor = System.Drawing.Color.FromArgb(glA, glR, glG, glB);
* System.Drawing.Brush foreground = new System.Drawing.SolidBrush(glColor);
*
* //var font = new System.Drawing.Font("Arial", 12);
* //var font = new System.Drawing.Font(window.FontFamily.Source, (int)window.FontSize);
* // 1 point = 1 / 72.0 inch = (1 / 72.0) * 96 = 1.333333 pixel
* var font = new System.Drawing.Font(window.FontFamily.Source, (int)(fontSize / 1.333333));
* // サイズ取得用に生成
* var bmp = new System.Drawing.Bitmap(1, 1, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
* System.Drawing.SizeF size;
* using (var g = System.Drawing.Graphics.FromImage(bmp))
* {
* g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
*
* size = g.MeasureString(str, font);
* }
*
* // 再生成
* {
* int width = (int)size.Width;
* //int height = (int)size.Height;
* // TODO: テキストのY座標がずれている : 画像の高さが大きすぎる
* int height = (int)(size.Height * 0.75);
* bmp = new System.Drawing.Bitmap(width, height,
* System.Drawing.Imaging.PixelFormat.Format32bppArgb);
* }
*
* using (var g = System.Drawing.Graphics.FromImage(bmp))
* {
* g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
*
* g.DrawString(str, font, foreground, new System.Drawing.Point(0, 0));
* }
*
* // check
* //bmp.Save("1.bmp");
*
* // 上下反転する
* bmp.RotateFlip(System.Drawing.RotateFlipType.RotateNoneFlipY);
*
* var bitmapData = bmp.LockBits(new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height),
* System.Drawing.Imaging.ImageLockMode.ReadOnly,
* System.Drawing.Imaging.PixelFormat.Format32bppArgb);
* int bmpWidth = bitmapData.Width;
* int bmpHeight = bitmapData.Height;
*
* bool isTexture = GL.IsEnabled(EnableCap.Texture2D);
* bool isBlend = GL.IsEnabled(EnableCap.Blend);
* GL.Enable(EnableCap.Texture2D);
* GL.Enable(EnableCap.Blend);
* GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
*
* int texture = GL.GenTexture();
* GL.BindTexture(TextureTarget.Texture2D, texture);
* GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter,
* (int)TextureMinFilter.Linear);
* GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter,
* (int)TextureMagFilter.Linear);
* GL.TexImage2D(TextureTarget.Texture2D, 0,
* PixelInternalFormat.Rgba,
* bmpWidth, bmpHeight, 0,
* PixelFormat.Bgra, PixelType.UnsignedByte, bitmapData.Scan0);
*
* GL.PushMatrix();
* OpenTK.Matrix4d m;
* GL.GetDouble(GetPName.ModelviewMatrix, out m);
* //GL.Translate(0, 0, -m.M14);
* GL.Scale(1.0 / m.M11, 1.0 / m.M22, 1.0 / m.M33);
* GL.Scale(FontScale, FontScale, 1.0); // TODO: これを計算で求める必要がある
*
* GL.Begin(PrimitiveType.Quads);
* GL.TexCoord2(0, 0);
* GL.Vertex2(0, 0);
*
* GL.TexCoord2(1, 0);
* GL.Vertex2(bmpWidth, 0);
*
* GL.TexCoord2(1, 1);
* GL.Vertex2(bmpWidth, bmpHeight);
*
* GL.TexCoord2(0, 1);
* GL.Vertex2(0, bmpHeight);
* GL.End();
* GL.PopMatrix();
*
* bmp.UnlockBits(bitmapData);
*
* if (!isTexture)
* {
* GL.Disable(EnableCap.Texture2D);
* }
* if (!isBlend)
* {
* GL.Disable(EnableCap.Blend);
* }
* }
*/
// WPF版 TODO: 直書きあり
public static void DrawString(string str, double fontSize)
{
var window = System.Windows.Application.Current.MainWindow;
double[] glDoubleColor = new double[4];
GL.GetDouble(GetPName.CurrentColor, glDoubleColor);
var glColor = new System.Windows.Media.Color();
glColor.R = (byte)(glDoubleColor[0] * 255);
glColor.G = (byte)(glDoubleColor[1] * 255);
glColor.B = (byte)(glDoubleColor[2] * 255);
glColor.A = (byte)(glDoubleColor[3] * 255); //255;
System.Windows.Media.Brush foreground = new System.Windows.Media.SolidColorBrush(glColor);
//System.Windows.Media.Brush foreground = window.Foreground;
var text = new System.Windows.Media.FormattedText(
str,
new System.Globalization.CultureInfo("en-us"),
System.Windows.FlowDirection.LeftToRight,
new System.Windows.Media.Typeface(
window.FontFamily,
System.Windows.FontStyles.Normal,
System.Windows.FontWeights.Normal,
new System.Windows.FontStretch()),
fontSize, //window.FontSize,
foreground);
var drawingVisual = new System.Windows.Media.DrawingVisual();
using (System.Windows.Media.DrawingContext drawingContext = drawingVisual.RenderOpen())
{
drawingContext.DrawText(text, new System.Windows.Point(0, 0));
}
System.Windows.Media.Imaging.RenderTargetBitmap bmp = null;
{
int width = (int)text.Width;
int height = (int)text.Height;
int dpiX = 96;
int dpiY = 96;
bmp = new System.Windows.Media.Imaging.RenderTargetBitmap(
width, height, dpiX, dpiY, System.Windows.Media.PixelFormats.Pbgra32);
}
bmp.Render(drawingVisual);
int bmpWidth = bmp.PixelWidth;
int bmpHeight = bmp.PixelHeight;
int stride = bmpWidth * 4;
byte[] tmpbits = new byte[stride * bmpHeight];
var rectangle = new System.Windows.Int32Rect(0, 0, bmpWidth, bmpHeight);
bmp.CopyPixels(rectangle, tmpbits, stride, 0);
// 上下反転する
byte[] bits = new byte[stride * bmpHeight];
for (int h = 0; h < bmpHeight; h++)
{
for (int w = 0; w < stride; w++)
{
bits[h * stride + w] = tmpbits[(bmpHeight - 1 - h) * stride + w];
}
}
// check
//var png = new System.Windows.Media.Imaging.PngBitmapEncoder();
//png.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(bmp));
//using (var fs = new FileStream("1.png", FileMode.Create))
//{
// png.Save(fs);
//}
bool isTexture = GL.IsEnabled(EnableCap.Texture2D);
bool isBlend = GL.IsEnabled(EnableCap.Blend);
GL.Enable(EnableCap.Texture2D);
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
int texture = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, texture);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter,
(int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter,
(int)TextureMagFilter.Linear);
GL.TexImage2D(TextureTarget.Texture2D, 0,
PixelInternalFormat.Rgba,
bmpWidth, bmpHeight, 0,
PixelFormat.Bgra, PixelType.UnsignedByte, bits);
GL.PushMatrix();
OpenTK.Matrix4d m;
GL.GetDouble(GetPName.ModelviewMatrix, out m);
GL.Scale(1.0 / m.M11, 1.0 / m.M22, 1.0 / m.M33);
GL.Scale(FontScale, FontScale, 1.0); // TODO: これを計算で求める必要がある
GL.Begin(PrimitiveType.Quads);
GL.TexCoord2(0, 0);
GL.Vertex2(0, 0);
GL.TexCoord2(1, 0);
GL.Vertex2(bmpWidth, 0);
GL.TexCoord2(1, 1);
GL.Vertex2(bmpWidth, bmpHeight);
GL.TexCoord2(0, 1);
GL.Vertex2(0, bmpHeight);
GL.End();
GL.PopMatrix();
if (!isTexture)
{
GL.Disable(EnableCap.Texture2D);
}
if (!isBlend)
{
GL.Disable(EnableCap.Blend);
}
}