void getRGBA()
{
// get the pixels
memset(rgba, 0, width*height*4);
#if defined(USE_POPPLER)
#if SAGE_POPPLER_VERSION == 5
poppler_page_render_to_pixbuf (page, 0, 0, width, height, x_resolution/72.0, 0, pixbuf);
memcpy(rgba, gdk_pixbuf_get_pixels(pixbuf), width *height * 3);
#endif
#if SAGE_POPPLER_VERSION == 12
SplashBitmap *bitmap = splashOut->getBitmap();
memcpy(rgba, bitmap->getDataPtr(), width *height * 3);
#endif
#else
MagickGetImagePixels(wand, 0, 0, width, height, "RGBA", CharPixel, rgba);
#endif
if (useDXT) {
unsigned int numBytes;
// compress into DXT
memset(dxt, 0, width*height*4/8);
numBytes = CompressDXT(rgba, dxt, width, height, FORMAT_DXT1, 1);
}
}
PDFRectangle measure_margin(PDFDoc * doc, SplashOutputDev * dev, int page)
{
doc->displayPageSlice(dev, page, 72.0, 72.0,
gFalse, gFalse, gFalse, gFalse, 0, 0, -1, -1);
SplashBitmap *bitmap = dev->getBitmap();
//bitmap->writePNMFile((char*)"out.ppm");
/*
printf("width: %d\n", bitmap->getWidth());
printf("height: %d\n", bitmap->getHeight());
printf("rowsize: %d\n", bitmap->getRowSize());
*/
SplashColorPtr data = bitmap->getDataPtr();
int width = bitmap->getWidth();
int height = bitmap->getHeight();
int margin_left = 0;
int margin_top = 0;
int margin_right = 0;
int margin_bottom = 0;
int x, y, i;
if(opt_oreilly){
// fill top
for (y = 0; y < 70; y++) {
for (x = 0; x < width; x++) {
i = y * width + x;
data[i] = 0;
}
}
// fill bottom
for (y = height - 1; y >= height - 20; y--) {
for (x = 0; x < width; x++) {
i = y * width + x;
data[i] = 0;
}
}
//bitmap->writePNMFile((char*)"out.ppm");
}
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
i = y * width + x;
if (data[i]) {
margin_top = y;
goto out_top;
}
}
}
out_top:
for (x = 0; x < width; x++) {
for (y = 0; y < height; y++) {
i = y * width + x;
if (data[i]) {
margin_left = x;
goto out_left;
}
}
}
out_left:
for (y = height - 1; y >= 0; y--) {
for (x = 0; x < width; x++) {
i = y * width + x;
if (data[i]) {
margin_bottom = height - y - 1;
goto out_bottom;
}
}
}
out_bottom:
for (x = width - 1; x >= 0; x--) {
for (y = 0; y < height; y++) {
i = y * width + x;
if (data[i]) {
margin_right = width - x - 1;
goto out_right;
}
}
}
out_right:
/*
printf("margin_top: %d\n", margin_top);
printf("margin_left: %d\n", margin_left);
printf("margin_bottom: %d\n", margin_bottom);
printf("margin_right: %d\n", margin_right);
*/
PDFRectangle rect;
rect.x1 = margin_left;
rect.y1 = margin_bottom;
rect.x2 = width - margin_right;
rect.y2 = height - margin_top;
return rect;
}
