QImage qt_imageToQImage(int M, int N, coordval* image, t_imagecolor color_mode)
{
QImage qimage(QSize(M, N), QImage::Format_ARGB32_Premultiplied);
rgb_color rgb1;
rgb255_color rgb255;
// TrueColor 24-bit color mode
if (color_mode == IC_RGB)
for (int n = 0; n < N; n++)
{
QRgb* line = (QRgb*)(qimage.scanLine(n));
for (int m = 0; m < M; m++)
{
rgb1.r = *image++;
rgb1.g = *image++;
rgb1.b = *image++;
rgb255_from_rgb1(rgb1, &rgb255);
*line++ = qRgb(rgb255.r, rgb255.g, rgb255.b);
}
}
else if (color_mode == IC_RGBA)
for (int n = 0; n < N; n++)
{
QRgb* line = (QRgb*)(qimage.scanLine(n));
for (int m = 0; m < M; m++)
{
unsigned char alpha255 = *(image + 3);
float alpha1 = float(alpha255 / 255.);
rgb1.r = alpha1 * (*image++);
rgb1.g = alpha1 * (*image++);
rgb1.b = alpha1 * (*image++);
image++;
rgb255_from_rgb1(rgb1, &rgb255);
*line++ = qRgba(rgb255.r, rgb255.g, rgb255.b, alpha255);
}
}
// Palette color lookup from gray value
else
for (int n = 0; n < N; n++)
{
QRgb* line = (QRgb*)(qimage.scanLine(n));
for (int m = 0; m < M; m++)
{
if (isnan(*image))
{
image++;
*line++ = 0x00000000;
}
else
{
rgb255maxcolors_from_gray(*image++, &rgb255);
*line++ = qRgb(rgb255.r, rgb255.g, rgb255.b);
}
}
}
return qimage;
}
unsigned int * gp_cairo_helper_coordval_to_chars(coordval* image, int M, int N, t_imagecolor color_mode)
{
int m,n;
unsigned int *image255, *image255copy;
rgb_color rgb1;
rgb255_color rgb255;
/* cairo image buffer, upper bits are alpha, then r, g and b
* Depends on endianess */
image255 = (unsigned int*) gp_alloc(M*N*sizeof(unsigned int), "gp_cairo : draw image");
image255copy = image255;
/* TrueColor 24-bit plot->color mode */
if (color_mode == IC_RGB) {
for (n=0; n<N; n++) {
for (m=0; m<M; m++) {
rgb1.r = *image++;
rgb1.g = *image++;
rgb1.b = *image++;
rgb255_from_rgb1( rgb1, &rgb255 );
*image255copy++ = (0xFF<<24) + (rgb255.r<<16) + (rgb255.g<<8) + rgb255.b;
}
}
} else if (color_mode == IC_RGBA) {
unsigned char alpha255;
double alpha1;
for (n=0; n<N; n++) {
for (m=0; m<M; m++) {
alpha255 = *(image+3);
alpha1 = (float)alpha255 / 255.;
rgb1.r = alpha1 * (*image++);
rgb1.g = alpha1 * (*image++);
rgb1.b = alpha1 * (*image++);
image++;
rgb255_from_rgb1( rgb1, &rgb255 );
*image255copy++ = (alpha255<<24)
+ (rgb255.r<<16) + (rgb255.g<<8) + rgb255.b;
}
}
/* Palette plot->color lookup from gray value */
} else {
for (n=0; n<N; n++) {
for (m=0; m<M; m++) {
if (isnan(*image)) {
image++;
*image255copy++ = 0x00000000;
} else {
rgb255maxcolors_from_gray( *image++, &rgb255 );
*image255copy++ = (0xFF<<24) + (rgb255.r<<16) + (rgb255.g<<8) + rgb255.b;
}
}
}
}
return image255;
}
