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170 | using System;
using System.Collections;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
namespace TechScales
{
internal static class BitmapExtensions
{
/// <summary>
/// Replace color with limited alpha and specific intensity
/// </summary>
/// <param name="source"></param>
/// <param name="to"></param>
/// <param name="minAlphaReplace"></param>
/// <param name="intensity"></param>
/// <returns></returns>
internal static Bitmap SetReplaceAllColorBitmap(
this Bitmap source, Color to, byte minAlphaReplace = 0, float intensity = .25f)
{
if (source == null) { return null; }
if (intensity < 0.1f && intensity > 1f) { intensity = 1f; }
Bitmap bm = new Bitmap(source);
for (int w = 0; w < source.Width - 1; w++)
{
for (int h = 0; h < source.Height - 1; h++)
{
Color c = bm.GetPixel(w, h);
if (c.A > minAlphaReplace)
{
c = Color.FromArgb(c.A, intensity == 1f ? to : c.Lerp(to, intensity));
bm.SetPixel(w, h, c);
}
}
}
return bm;
}
/// <summary>
/// Replace color with specific intensity
/// </summary>
/// <param name="source"></param>
/// <param name="to"></param>
/// <param name="minAlphaReplace"></param>
/// <param name="intensity"></param>
/// <returns></returns>
internal static Bitmap SetReplaceAllColorBitmap(
this Bitmap source, Color to, float intensity)
{
return SetReplaceAllColorBitmap(source, to, 0, intensity);
}
/// <summary>
/// Replace all color into new color with specific intensity
/// </summary>
/// <param name="source">gambar</param>
/// <param name="col">warna baru</param>
/// <param name="intensity"></param>
/// <returns></returns>
internal static Bitmap SetReplaceColorBitmap(
this Bitmap source, Color col, float intensity = 1f)
{
if (source == null) { return null; }
if (intensity < 0.1f && intensity > 1f) { intensity = 1f; }
Bitmap bm = new Bitmap(source);
for (int w = 0; w < source.Width - 1; w++)
{
for (int h = 0; h < source.Height - 1; h++)
{
Color c = bm.GetPixel(w, h);
if (c.A > 0)
{
c = Color.FromArgb(c.A, intensity == 1f ? col : c.Lerp(col, intensity));
bm.SetPixel(w, h, c);
}
}
}
return bm;
}
/// <summary>
/// Replace specific color into new color with specific intensity
/// </summary>
/// <param name="source">gambar</param>
/// <param name="from">warna diganti</param>
/// <param name="to">watrna pengganti</param>
/// <param name="intensity">intensitas</param>
/// <returns></returns>
internal static Bitmap SetReplaceColorBitmap(
this Bitmap source, Color @from, Color to, float intensity = 1f)
{
if (source == null) { return null; }
if (from.Equals(to)) { return source; }
if (intensity < 0.1f && intensity > 1f) { intensity = 1f; }
Bitmap bm = new Bitmap(source);
for (int w = 0; w < source.Width - 1; w++)
{
for (int h = 0; h < source.Height - 1; h++)
{
Color c = bm.GetPixel(w, h);
if (c.R == from.R && c.G == from.B && c.B == from.B)
{
c = Color.FromArgb(c.A, intensity == 1f ? to : c.Lerp(to, intensity));
bm.SetPixel(w, h, c);
}
}
}
return bm;
}
private static unsafe Bitmap ReplaceNonTransparentColorA(
Bitmap source,
Color replacement,
byte alphaLimitMinim = 5)
{
const int PIXEL_SIZE = 4; // 32 bits per pixel
var target = new Bitmap(source.Width, source.Height, PixelFormat.Format32bppArgb);
BitmapData sourceData = null, targetData = null;
try
{
sourceData = source.LockBits(
new Rectangle(0, 0, source.Width, source.Height),
ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
targetData = target.LockBits(
new Rectangle(0, 0, target.Width, target.Height),
ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
for (int y = 0; y < source.Height; ++y)
{
byte* sourceRow = (byte*)sourceData.Scan0 + (y * sourceData.Stride);
byte* targetRow = (byte*)targetData.Scan0 + (y * targetData.Stride);
for (int x = 0; x < source.Width; ++x)
{
byte b = sourceRow[x * PIXEL_SIZE + 0];
byte g = sourceRow[x * PIXEL_SIZE + 1];
byte r = sourceRow[x * PIXEL_SIZE + 2];
byte a = sourceRow[x * PIXEL_SIZE + 3];
r = replacement.R;
g = replacement.G;
b = replacement.B;
targetRow[x * PIXEL_SIZE + 0] = b;
targetRow[x * PIXEL_SIZE + 1] = g;
targetRow[x * PIXEL_SIZE + 2] = r;
targetRow[x * PIXEL_SIZE + 3] = a;
}
}
}
finally
{
if (sourceData != null) { source.UnlockBits(sourceData); }
if (targetData != null) { target.UnlockBits(targetData); }
}
return target;
}
internal static Bitmap ReplaceNonTransparentColor(this
Bitmap source,
Color replacement,
byte alphaLimitMinim = 5)
{
return ReplaceNonTransparentColorA(source, replacement, alphaLimitMinim);
}
internal static Bitmap ReplaceColor(
this Bitmap source, Color @from, Color to, float intensity = 1f)
{
return SetReplaceColorBitmap(source, from, to, intensity);
}
}
}
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