//==============================================================================
void LowLevelGraphicsPostScriptRenderer::writeImage (const Image& im,
const int sx, const int sy,
const int maxW, const int maxH) const
{
out << "{<\n";
const int w = jmin (maxW, im.getWidth());
const int h = jmin (maxH, im.getHeight());
int charsOnLine = 0;
const Image::BitmapData srcData (im, 0, 0, w, h);
Colour pixel;
for (int y = h; --y >= 0;)
{
for (int x = 0; x < w; ++x)
{
const uint8* pixelData = srcData.getPixelPointer (x, y);
if (x >= sx && y >= sy)
{
if (im.isARGB())
{
PixelARGB p (*(const PixelARGB*) pixelData);
p.unpremultiply();
pixel = Colours::white.overlaidWith (Colour (p.getARGB()));
}
else if (im.isRGB())
{
pixel = Colour (((const PixelRGB*) pixelData)->getARGB());
}
else
{
pixel = Colour ((uint8) 0, (uint8) 0, (uint8) 0, *pixelData);
}
}
else
{
pixel = Colours::transparentWhite;
}
const uint8 pixelValues[3] = { pixel.getRed(), pixel.getGreen(), pixel.getBlue() };
out << String::toHexString (pixelValues, 3, 0);
charsOnLine += 3;
if (charsOnLine > 100)
{
out << '\n';
charsOnLine = 0;
}
}
}
out << "\n>}\n";
}
void Image::BitmapData::setPixelColour (const int x, const int y, const Colour& colour) const noexcept
{
jassert (isPositiveAndBelow (x, width) && isPositiveAndBelow (y, height));
uint8* const pixel = getPixelPointer (x, y);
const PixelARGB col (colour.getPixelARGB());
switch (pixelFormat)
{
case Image::ARGB: ((PixelARGB*) pixel)->set (col); break;
case Image::RGB: ((PixelRGB*) pixel)->set (col); break;
case Image::SingleChannel: *pixel = col.getAlpha(); break;
default: jassertfalse; break;
}
}
//==============================================================================
void Image::clear (const Rectangle<int>& area, const Colour& colourToClearTo)
{
const Rectangle<int> clipped (area.getIntersection (getBounds()));
if (! clipped.isEmpty())
{
const PixelARGB col (colourToClearTo.getPixelARGB());
const BitmapData destData (*this, clipped.getX(), clipped.getY(), clipped.getWidth(), clipped.getHeight(), BitmapData::writeOnly);
uint8* dest = destData.data;
int dh = clipped.getHeight();
while (--dh >= 0)
{
uint8* line = dest;
dest += destData.lineStride;
if (isARGB())
{
for (int x = clipped.getWidth(); --x >= 0;)
{
((PixelARGB*) line)->set (col);
line += destData.pixelStride;
}
}
else if (isRGB())
{
for (int x = clipped.getWidth(); --x >= 0;)
{
((PixelRGB*) line)->set (col);
line += destData.pixelStride;
}
}
else
{
for (int x = clipped.getWidth(); --x >= 0;)
{
*line = col.getAlpha();
line += destData.pixelStride;
}
}
}
}
}
bool PNGImageFormat::writeImageToStream (const Image& image, OutputStream& out)
{
using namespace pnglibNamespace;
const int width = image.getWidth();
const int height = image.getHeight();
png_structp pngWriteStruct = png_create_write_struct (PNG_LIBPNG_VER_STRING, 0, 0, 0);
if (pngWriteStruct == nullptr)
return false;
png_infop pngInfoStruct = png_create_info_struct (pngWriteStruct);
if (pngInfoStruct == nullptr)
{
png_destroy_write_struct (&pngWriteStruct, (png_infopp) nullptr);
return false;
}
png_set_write_fn (pngWriteStruct, &out, PNGHelpers::writeDataCallback, 0);
png_set_IHDR (pngWriteStruct, pngInfoStruct, (png_uint_32) width, (png_uint_32) height, 8,
image.hasAlphaChannel() ? PNG_COLOR_TYPE_RGB_ALPHA
: PNG_COLOR_TYPE_RGB,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_BASE,
PNG_FILTER_TYPE_BASE);
HeapBlock<uint8> rowData ((size_t) width * 4);
png_color_8 sig_bit;
sig_bit.red = 8;
sig_bit.green = 8;
sig_bit.blue = 8;
sig_bit.gray = 0;
sig_bit.alpha = 8;
png_set_sBIT (pngWriteStruct, pngInfoStruct, &sig_bit);
png_write_info (pngWriteStruct, pngInfoStruct);
png_set_shift (pngWriteStruct, &sig_bit);
png_set_packing (pngWriteStruct);
const Image::BitmapData srcData (image, Image::BitmapData::readOnly);
for (int y = 0; y < height; ++y)
{
uint8* dst = rowData;
const uint8* src = srcData.getLinePointer (y);
if (image.hasAlphaChannel())
{
for (int i = width; --i >= 0;)
{
PixelARGB p (*(const PixelARGB*) src);
p.unpremultiply();
*dst++ = p.getRed();
*dst++ = p.getGreen();
*dst++ = p.getBlue();
*dst++ = p.getAlpha();
src += srcData.pixelStride;
}
}
else
{
for (int i = width; --i >= 0;)
{
*dst++ = ((const PixelRGB*) src)->getRed();
*dst++ = ((const PixelRGB*) src)->getGreen();
*dst++ = ((const PixelRGB*) src)->getBlue();
src += srcData.pixelStride;
}
}
png_bytep rowPtr = rowData;
png_write_rows (pngWriteStruct, &rowPtr, 1);
}
png_write_end (pngWriteStruct, pngInfoStruct);
png_destroy_write_struct (&pngWriteStruct, &pngInfoStruct);
return true;
}
void OuterGlowStyle::operator() (Pixels destPixels, Pixels stencilPixels)
{
if (!active)
return;
//int const width = stencilPixels.getWidth ();
//int const height = stencilPixels.getHeight ();
SharedTable <Colour> table = colours.createLookupTable ();
Map2D <int> dist (stencilPixels.getWidth (), stencilPixels.getHeight ());
Map2D <int> temp (stencilPixels.getWidth (), stencilPixels.getHeight ());
if (precise)
{
LayerStyles::DistanceMap () (
Pixels::Map2D (stencilPixels),
temp,
stencilPixels.getWidth (),
stencilPixels.getHeight (),
size);
#if 0
DistanceTransform::Meijster::calculateAntiAliased (
RenderPixelAntiAliased (
destPixels,
opacity,
spread,
size,
table),
GetMask (stencilPixels),
stencilPixels.getWidth (),
stencilPixels.getHeight (),
DistanceTransform::Meijster::EuclideanMetric ());
#endif
for (int y = 0; y < temp.getRows (); ++y)
{
for (int x = 0; x < temp.getCols (); ++x)
{
int const v = temp (x, y);
if (v > 0)
temp (x, y) = (255 - v) * 256;
}
}
}
else
{
// "Softer"
LayerStyles::BoxBlurAndDilateSettings bd (size, spread);
LayerStyles::GrayscaleDilation () (
Pixels::Map2D (stencilPixels),
stencilPixels.getWidth (),
stencilPixels.getHeight (),
dist,
stencilPixels.getWidth (),
stencilPixels.getHeight (),
0,
0,
bd.getDilatePixels ());
BoxBlur () (dist, temp, temp.getCols (), temp.getRows (), bd.getBoxBlurRadius ());
}
// Fill
//
PixelARGB c (0);
for (int y = 0; y < temp.getRows (); ++y)
{
for (int x = 0; x < temp.getCols (); ++x)
{
int const v = (temp (x, y) + 128) / 256;
PixelRGB& dest (*((PixelRGB*)destPixels.getPixelPointer (x, y)));
c.setAlpha (uint8(v));
dest.blend (c);
}
}
}