vrchess
annotate src/image.cc @ 3:a797e426e309
minor changes
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Tue, 19 Aug 2014 11:01:04 +0300 |
| parents | b326d53321f7 |
| children |
| rev | line source |
|---|---|
| nuclear@2 | 1 #include <string.h> |
| nuclear@2 | 2 #include "imago2.h" |
| nuclear@2 | 3 #include "image.h" |
| nuclear@2 | 4 |
| nuclear@2 | 5 Image::Image() |
| nuclear@2 | 6 { |
| nuclear@2 | 7 pixels = 0; |
| nuclear@2 | 8 own_pixels = true; |
| nuclear@2 | 9 width = height = 0; |
| nuclear@2 | 10 } |
| nuclear@2 | 11 |
| nuclear@2 | 12 Image::~Image() |
| nuclear@2 | 13 { |
| nuclear@2 | 14 destroy(); |
| nuclear@2 | 15 } |
| nuclear@2 | 16 |
| nuclear@2 | 17 Image::Image(const Image &img) |
| nuclear@2 | 18 { |
| nuclear@2 | 19 pixels = 0; |
| nuclear@2 | 20 own_pixels = false; |
| nuclear@2 | 21 |
| nuclear@2 | 22 create(img.width, img.height, img.pixels); |
| nuclear@2 | 23 } |
| nuclear@2 | 24 |
| nuclear@2 | 25 Image &Image::operator =(const Image &img) |
| nuclear@2 | 26 { |
| nuclear@2 | 27 if(this != &img) { |
| nuclear@2 | 28 destroy(); |
| nuclear@2 | 29 create(img.width, img.height, img.pixels); |
| nuclear@2 | 30 } |
| nuclear@2 | 31 return *this; |
| nuclear@2 | 32 } |
| nuclear@2 | 33 |
| nuclear@2 | 34 void Image::create(int xsz, int ysz, unsigned char *pixels) |
| nuclear@2 | 35 { |
| nuclear@2 | 36 destroy(); |
| nuclear@2 | 37 |
| nuclear@2 | 38 this->pixels = new unsigned char[xsz * ysz * 4]; |
| nuclear@2 | 39 if(pixels) { |
| nuclear@2 | 40 memcpy(this->pixels, pixels, xsz * ysz * 4); |
| nuclear@2 | 41 } else { |
| nuclear@2 | 42 memset(this->pixels, 0, xsz * ysz * 4); |
| nuclear@2 | 43 } |
| nuclear@2 | 44 width = xsz; |
| nuclear@2 | 45 height = ysz; |
| nuclear@2 | 46 own_pixels = true; |
| nuclear@2 | 47 } |
| nuclear@2 | 48 |
| nuclear@2 | 49 void Image::destroy() |
| nuclear@2 | 50 { |
| nuclear@2 | 51 if(own_pixels) { |
| nuclear@2 | 52 delete [] pixels; |
| nuclear@2 | 53 } |
| nuclear@2 | 54 pixels = 0; |
| nuclear@2 | 55 width = height = 0; |
| nuclear@2 | 56 own_pixels = true; |
| nuclear@2 | 57 } |
| nuclear@2 | 58 |
| nuclear@2 | 59 int Image::get_width() const |
| nuclear@2 | 60 { |
| nuclear@2 | 61 return width; |
| nuclear@2 | 62 } |
| nuclear@2 | 63 |
| nuclear@2 | 64 int Image::get_height() const |
| nuclear@2 | 65 { |
| nuclear@2 | 66 return height; |
| nuclear@2 | 67 } |
| nuclear@2 | 68 |
| nuclear@2 | 69 void Image::set_pixels(int xsz, int ysz, unsigned char *pixels) |
| nuclear@2 | 70 { |
| nuclear@2 | 71 destroy(); |
| nuclear@2 | 72 |
| nuclear@2 | 73 this->pixels = pixels; |
| nuclear@2 | 74 width = xsz; |
| nuclear@2 | 75 height = ysz; |
| nuclear@2 | 76 own_pixels = false; |
| nuclear@2 | 77 } |
| nuclear@2 | 78 |
| nuclear@2 | 79 unsigned char *Image::get_pixels() const |
| nuclear@2 | 80 { |
| nuclear@2 | 81 return pixels; |
| nuclear@2 | 82 } |
| nuclear@2 | 83 |
| nuclear@2 | 84 bool Image::load(const char *fname) |
| nuclear@2 | 85 { |
| nuclear@2 | 86 int xsz, ysz; |
| nuclear@2 | 87 unsigned char *pix = (unsigned char*)img_load_pixels(fname, &xsz, &ysz); |
| nuclear@2 | 88 if(!pix) { |
| nuclear@2 | 89 return false; |
| nuclear@2 | 90 } |
| nuclear@2 | 91 |
| nuclear@2 | 92 create(xsz, ysz, pix); |
| nuclear@2 | 93 return true; |
| nuclear@2 | 94 } |