/// <summary>
/// Copies the contents of the <see cref="FTBitmap"/> to a GDI+ <see cref="Bitmap"/>.
/// </summary>
/// <param name="color">The color of the text.</param>
/// <returns>A GDI+ <see cref="Bitmap"/> containing this bitmap's data with a transparent background.</returns>
public Bitmap ToGdipBitmap(Color color)
{
if (disposed)
{
throw new ObjectDisposedException("FTBitmap", "Cannot access a disposed object.");
}
if (rec.width == 0 || rec.rows == 0)
{
throw new InvalidOperationException("Invalid image size - one or both dimensions are 0.");
}
//TODO deal with negative pitch
switch (rec.pixel_mode)
{
case PixelMode.Mono:
{
Bitmap bmp = new Bitmap(rec.width, rec.rows, PixelFormat.Format1bppIndexed);
var locked = bmp.LockBits(new Rectangle(0, 0, rec.width, rec.rows), ImageLockMode.ReadWrite, PixelFormat.Format1bppIndexed);
for (int i = 0; i < rec.rows; i++)
{
PInvokeHelper.Copy(Buffer, i * rec.pitch, locked.Scan0, i * locked.Stride, locked.Stride);
}
bmp.UnlockBits(locked);
ColorPalette palette = bmp.Palette;
palette.Entries[0] = Color.FromArgb(0, color);
palette.Entries[1] = Color.FromArgb(255, color);
bmp.Palette = palette;
return(bmp);
}
case PixelMode.Gray4:
{
Bitmap bmp = new Bitmap(rec.width, rec.rows, PixelFormat.Format4bppIndexed);
var locked = bmp.LockBits(new Rectangle(0, 0, rec.width, rec.rows), ImageLockMode.ReadWrite, PixelFormat.Format4bppIndexed);
for (int i = 0; i < rec.rows; i++)
{
PInvokeHelper.Copy(Buffer, i * rec.pitch, locked.Scan0, i * locked.Stride, locked.Stride);
}
bmp.UnlockBits(locked);
ColorPalette palette = bmp.Palette;
for (int i = 0; i < palette.Entries.Length; i++)
{
float a = (i * 17) / 255f;
palette.Entries[i] = Color.FromArgb(i * 17, (int)(color.R * a), (int)(color.G * a), (int)(color.B * a));
}
bmp.Palette = palette;
return(bmp);
}
case PixelMode.Gray:
{
Bitmap bmp = new Bitmap(rec.width, rec.rows, PixelFormat.Format8bppIndexed);
var locked = bmp.LockBits(new Rectangle(0, 0, rec.width, rec.rows), ImageLockMode.ReadWrite, PixelFormat.Format8bppIndexed);
for (int i = 0; i < rec.rows; i++)
{
PInvokeHelper.Copy(Buffer, i * rec.pitch, locked.Scan0, i * locked.Stride, locked.Stride);
}
bmp.UnlockBits(locked);
ColorPalette palette = bmp.Palette;
for (int i = 0; i < palette.Entries.Length; i++)
{
float a = i / 255f;
palette.Entries[i] = Color.FromArgb(i, (int)(color.R * a), (int)(color.G * a), (int)(color.B * a));
}
//HACK There's a bug in Mono's libgdiplus requiring the "PaletteHasAlpha" flag to be set for transparency to work properly
//See https://github.com/Robmaister/SharpFont/issues/62
if (!hasCheckedForMono)
{
hasCheckedForMono = true;
isRunningOnMono = Type.GetType("Mono.Runtime") != null;
if (isRunningOnMono)
{
monoPaletteFlagsField = typeof(ColorPalette).GetField("flags", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
}
}
if (isRunningOnMono)
{
monoPaletteFlagsField.SetValue(palette, palette.Flags | 1);
}
bmp.Palette = palette;
return(bmp);
}
case PixelMode.Lcd:
{
//TODO apply color
int bmpWidth = rec.width / 3;
Bitmap bmp = new Bitmap(bmpWidth, rec.rows, PixelFormat.Format24bppRgb);
var locked = bmp.LockBits(new Rectangle(0, 0, bmpWidth, rec.rows), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
for (int i = 0; i < rec.rows; i++)
{
PInvokeHelper.Copy(Buffer, i * rec.pitch, locked.Scan0, i * locked.Stride, locked.Stride);
}
bmp.UnlockBits(locked);
return(bmp);
}
/*case PixelMode.VerticalLcd:
* {
* int bmpHeight = rec.rows / 3;
* Bitmap bmp = new Bitmap(rec.width, bmpHeight, PixelFormat.Format24bppRgb);
* var locked = bmp.LockBits(new Rectangle(0, 0, rec.width, bmpHeight), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
* for (int i = 0; i < bmpHeight; i++)
* PInvokeHelper.Copy(Buffer, i * rec.pitch, locked.Scan0, i * locked.Stride, rec.width);
* bmp.UnlockBits(locked);
*
* return bmp;
* }*/
default:
throw new InvalidOperationException("System.Drawing.Bitmap does not support this pixel mode.");
}
}
/// <summary>
/// Copies the contents of the <see cref="FTBitmap"/> to a GDI+ <see cref="Bitmap"/>.
/// </summary>
/// <returns>A GDI+ <see cref="Bitmap"/> containing this bitmap's data.</returns>
public Bitmap ToGdipBitmap(Color color)
{
if (disposed)
{
throw new ObjectDisposedException("FTBitmap", "Cannot access a disposed object.");
}
if (rec.width == 0 || rec.rows == 0)
{
throw new InvalidOperationException("Invalid image size - one or both dimensions are 0.");
}
//TODO deal with negative pitch
switch (rec.pixel_mode)
{
case PixelMode.Mono:
{
Bitmap bmp = new Bitmap(rec.width, rec.rows, PixelFormat.Format1bppIndexed);
var locked = bmp.LockBits(new Rectangle(0, 0, rec.width, rec.rows), ImageLockMode.ReadWrite, PixelFormat.Format1bppIndexed);
for (int i = 0; i < rec.rows; i++)
{
PInvokeHelper.Copy(Buffer, i * rec.pitch, locked.Scan0, i * locked.Stride, locked.Stride);
}
bmp.UnlockBits(locked);
ColorPalette palette = bmp.Palette;
palette.Entries[0] = Color.FromArgb(0, color);
palette.Entries[1] = Color.FromArgb(255, color);
bmp.Palette = palette;
return(bmp);
}
case PixelMode.Gray4:
{
Bitmap bmp = new Bitmap(rec.width, rec.rows, PixelFormat.Format4bppIndexed);
var locked = bmp.LockBits(new Rectangle(0, 0, rec.width, rec.rows), ImageLockMode.ReadWrite, PixelFormat.Format4bppIndexed);
for (int i = 0; i < rec.rows; i++)
{
PInvokeHelper.Copy(Buffer, i * rec.pitch, locked.Scan0, i * locked.Stride, locked.Stride);
}
bmp.UnlockBits(locked);
ColorPalette palette = bmp.Palette;
for (int i = 0; i < palette.Entries.Length; i++)
{
float a = (i * 17) / 255f;
palette.Entries[i] = Color.FromArgb(i * 17, (int)(color.R * a), (int)(color.G * a), (int)(color.B * a));
}
bmp.Palette = palette;
return(bmp);
}
case PixelMode.Gray:
{
Bitmap bmp = new Bitmap(rec.width, rec.rows, PixelFormat.Format8bppIndexed);
var locked = bmp.LockBits(new Rectangle(0, 0, rec.width, rec.rows), ImageLockMode.ReadWrite, PixelFormat.Format8bppIndexed);
for (int i = 0; i < rec.rows; i++)
{
PInvokeHelper.Copy(Buffer, i * rec.pitch, locked.Scan0, i * locked.Stride, locked.Stride);
}
bmp.UnlockBits(locked);
ColorPalette palette = bmp.Palette;
for (int i = 0; i < palette.Entries.Length; i++)
{
float a = i / 255f;
palette.Entries[i] = Color.FromArgb(i, (int)(color.R * a), (int)(color.G * a), (int)(color.B * a));
}
bmp.Palette = palette;
return(bmp);
}
case PixelMode.Lcd:
{
//TODO apply color
int bmpWidth = rec.width / 3;
Bitmap bmp = new Bitmap(bmpWidth, rec.rows, PixelFormat.Format24bppRgb);
var locked = bmp.LockBits(new Rectangle(0, 0, bmpWidth, rec.rows), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
for (int i = 0; i < rec.rows; i++)
{
PInvokeHelper.Copy(Buffer, i * rec.pitch, locked.Scan0, i * locked.Stride, locked.Stride);
}
bmp.UnlockBits(locked);
return(bmp);
}
/*case PixelMode.VerticalLcd:
* {
* int bmpHeight = rec.rows / 3;
* Bitmap bmp = new Bitmap(rec.width, bmpHeight, PixelFormat.Format24bppRgb);
* var locked = bmp.LockBits(new Rectangle(0, 0, rec.width, bmpHeight), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
* for (int i = 0; i < bmpHeight; i++)
* PInvokeHelper.Copy(Buffer, i * rec.pitch, locked.Scan0, i * locked.Stride, rec.width);
* bmp.UnlockBits(locked);
*
* return bmp;
* }*/
default:
throw new InvalidOperationException("System.Drawing.Bitmap does not support this pixel mode.");
}
}