{

unsigned char *pix;

unsigned char tmp;

size_t i, j;

memcpy(buf, data, height * stride);

for (i = 0; i < (size_t)height; ++i) {

pix = buf + i * stride;

for (j = 0; j < (size_t)width; ++j) {

// Convert rgba to argb

tmp = pix[2];

pix[2] = pix[0];

pix[0] = tmp;

pix += 4;

}

}

: width(width),

height(height),

dpi(dpi),

NUMBYTES(width * height * 4),

pixBuffer(NULL),

renderingBuffer(),

alphaBuffer(NULL),

alphaMaskRenderingBuffer(),

alphaMask(alphaMaskRenderingBuffer),

pixfmtAlphaMask(alphaMaskRenderingBuffer),

rendererBaseAlphaMask(),

rendererAlphaMask(),

scanlineAlphaMask(),

slineP8(),

slineBin(),

pixFmt(),

rendererBase(),

rendererAA(),

rendererBin(),

theRasterizer(8192),

lastclippath(NULL),

_fill_color(agg::rgba(1, 1, 1, 0))

{

unsigned stride(width * 4);

pixBuffer = new agg::int8u[NUMBYTES];

renderingBuffer.attach(pixBuffer, width, height, stride);

pixFmt.attach(renderingBuffer);

rendererBase.attach(pixFmt);

rendererBase.clear(_fill_color);

rendererAA.attach(rendererBase);

rendererBin.attach(rendererBase);

hatch_size = int(dpi);

hatchBuffer = new agg::int8u[hatch_size * hatch_size * 4];

hatchRenderingBuffer.attach(hatchBuffer, hatch_size, hatch_size, hatch_size * 4);

{

if (!alphaBuffer) {

alphaBuffer = new agg::int8u[width * height];

alphaMaskRenderingBuffer.attach(alphaBuffer, width, height, width);

rendererBaseAlphaMask.attach(pixfmtAlphaMask);

rendererAlphaMask.attach(rendererBaseAlphaMask);

}

{

if (region.get_data() == NULL) {

throw std::runtime_error("Cannot restore_region from NULL data");

}

agg::rendering_buffer rbuf;

rbuf.attach(region.get_data(), region.get_width(), region.get_height(), region.get_stride());

rendererBase.copy_from(rbuf, 0, region.get_rect().x1, region.get_rect().y1);

{

if (region.get_data() == NULL) {

throw std::runtime_error("Cannot restore_region from NULL data");

}

agg::rect_i &rrect = region.get_rect();

agg::rect_i rect(xx1 - rrect.x1, (yy1 - rrect.y1), xx2 - rrect.x1, (yy2 - rrect.y1));

agg::rendering_buffer rbuf;

rbuf.attach(region.get_data(), region.get_width(), region.get_height(), region.get_stride());

rendererBase.copy_from(rbuf, &rect, x, y);

const agg::trans_affine &clippath_trans)

{

typedef agg::conv_transform<py::PathIterator> transformed_path_t;

typedef agg::conv_curve<transformed_path_t> curve_t;

bool has_clippath = (clippath.total_vertices() != 0);

if (has_clippath &&

(clippath.get_id() != lastclippath || clippath_trans != lastclippath_transform)) {

create_alpha_buffers();

agg::trans_affine trans(clippath_trans);

trans *= agg::trans_affine_scaling(1.0, -1.0);

trans *= agg::trans_affine_translation(0.0, (double)height);

rendererBaseAlphaMask.clear(agg::gray8(0, 0));

transformed_path_t transformed_clippath(clippath, trans);

curve_t curved_clippath(transformed_clippath);

theRasterizer.add_path(curved_clippath);

rendererAlphaMask.color(agg::gray8(255, 255));

agg::render_scanlines(theRasterizer, scanlineAlphaMask, rendererAlphaMask);

lastclippath = clippath.get_id();

lastclippath_transform = clippath_trans;

}

return has_clippath;

{

agg::rect_i r(width, height, 0, 0);

// Looks at the alpha channel to find the minimum extents of the image

unsigned char *pixel = pixBuffer + 3;

for (int y = 0; y < (int)height; ++y) {

for (int x = 0; x < (int)width; ++x) {

if (*pixel) {

if (x < r.x1)

r.x1 = x;

if (y < r.y1)

r.y1 = y;

if (x > r.x2)

r.x2 = x;

if (y > r.y2)

r.y2 = y;

}

pixel += 4;

}

}

if (r.x1 == (int)width && r.x2 == 0) {

// The buffer is completely empty.

r.x1 = r.y1 = r.x2 = r.y2 = 0;

} else {

r.x1 = std::max(0, r.x1);

r.y1 = std::max(0, r.y1);

r.x2 = std::min(r.x2 + 1, (int)width);

r.y2 = std::min(r.y2 + 1, (int)height);

}

return r;

{

//"clear the rendered buffer";

rendererBase.clear(_fill_color);