git.mutantstargoat.com Git - demo/blob - src/image.cc

   1 #include <string.h>
   2
   3 #include "imago2.h"
   4 #include "image.h"
   5
   6 Image::Image()
   7 {
   8         w = h = 0;
   9         pixels = 0;
  10 }
  11
  12 Image::~Image()
  13 {
  14         delete [] pixels;
  15 }
  16
  17 Image::Image(const Image &image)
  18 {
  19         w = image.w;
  20         h = image.h;
  21
  22         pixels = new unsigned char[w * h * 4];
  23         memcpy(pixels, image.pixels, w * h * 4);
  24 }
  25
  26 Image &Image::operator =(const Image &image)
  27 {
  28         if(&image == this)
  29                 return *this;
  30
  31         delete [] pixels;
  32
  33         w = image.w;
  34         h = image.h;
  35
  36         pixels = new unsigned char[w * h * 4];
  37         memcpy(pixels, image.pixels, w * h * 4);
  38
  39         return *this;
  40 }
  41
  42 Image::Image(Image &&image)
  43 {
  44         w = image.w;
  45         h = image.h;
  46
  47         pixels = image.pixels;
  48         image.pixels = 0;
  49 }
  50
  51 Image &Image::operator =(Image &&image)
  52 {
  53         if(&image == this)
  54                 return *this;
  55
  56         delete [] pixels;
  57
  58         w = image.w;
  59         h = image.h;
  60
  61         pixels = image.pixels;
  62         image.pixels = 0;
  63
  64         return *this;
  65 }
  66
  67 bool Image::load(const char *fname)
  68 {
  69         unsigned char *imago_pixels;
  70         if(!(imago_pixels = (unsigned char *)img_load_pixels(fname, &w, &h))) {
  71                 fprintf(stderr, "Failed to load pixels from file: %s.\n", fname);
  72                 return false;
  73         }
  74
  75         delete [] pixels;
  76         pixels = new unsigned char[w * h * 4];
  77         memcpy(pixels, imago_pixels, w * h * 4);
  78
  79         img_free_pixels(imago_pixels);
  80
  81         return true;
  82 }