#define MAX_CELL_SIZE 256
//////////////////////////////////////////////////////////////////////////////////////
// //
// DRAW PIXEL //
// //
//////////////////////////////////////////////////////////////////////////////////////
//The 'draw[]' is the array which holds the states should we draw a pixel or not.
//Is need to decrease redraw when using some tools like line, rectangle and selection.
struct _pixel_state
{
unsigned image_rows, image_columns;
bool draw[MAX_CELL_SIZE*MAX_CELL_SIZE];
void set_drawable_state();
bool is_drawable();
void reset_and_set_all_drawable();
void set_sizes();
} pixel_state;
void _pixel_state::set_drawable_state(int _r, _c, _state)
{
draw[image_columns*_r + _c] = _state;
}
bool _pixel_state::is_drawable(int _r, _c)
{
return draw[image_columns*_r + _c];
}
void _pixel_state::reset_and_set_all_drawable()
{
int i;
for (i = 0; i < image_columns*image_rows; i++) draw[i]=true;
}
void _pixel_state::set_sizes(dword _r, _c)
{
image_rows = _r;
image_columns = _c;
}
//////////////////////////////////////////////////////////////////////////////////////
// //
// IMAGE //
// //
//////////////////////////////////////////////////////////////////////////////////////
//This stucture determines basic actions that can be done with image (icon).
struct _image
{
unsigned rows, columns;
dword mas[MAX_CELL_SIZE*MAX_CELL_SIZE];
dword mas_copy[MAX_CELL_SIZE*MAX_CELL_SIZE];
dword img;
_pixel_state pixel_state;
void create();
void set_pixel();
void draw_line();
void fill();
void set_image();
dword get_pixel();
dword get_image();
dword get_image_with_replaced_color();
void move();
};
void _image::create(int _rows, _columns)
{
int i;
rows = _rows;
columns = _columns;
for (i = 0; i < columns*rows; i++) mas[i]=0xBFCAD2;
pixel_state.set_sizes(rows, columns);
}
void _image::set_pixel(int _r, _c, _color)
{
mas[columns*_r + _c] = _color;
}
void _image::draw_line(int x1, int y1, int x2, int y2, dword color) {
int dx, dy, signX, signY, error, error2;
dx = x2 - x1;
if (dx < 0)
dx = -dx;
dy = y2 - y1;
if (dy < 0)
dy = -dy;
if (x1 < x2)
signX = 1;
else
signX = -1;
if (y1 < y2)
signY = 1;
else
signY = -1;
error = dx - dy;
set_pixel(y2, x2, color);
while((x1 != x2) || (y1 != y2))
{
set_pixel(y1, x1, color);
error2 = error * 2;
if(error2 > calc(-dy))
{
error -= dy;
x1 += signX;
}
if(error2 < dx)
{
error += dx;
y1 += signY;
}
}
}
void _image::fill(int _r, _c, _color)
{
#define MARKED 6
int r, c, i, restart;
dword old_color = get_pixel(_r, _c);
set_pixel(_r, _c, MARKED);
do {
restart=false;
for (r = 0; r < rows; r++)
for (c = 0; c < columns; c++)
{
IF (get_pixel(r,c) != old_color) continue;
IF (get_pixel(r,c) == MARKED) continue;
IF (c>0) && (get_pixel(r,c-1) == MARKED) set_pixel(r,c,MARKED);
IF (r>0) && (get_pixel(r-1,c) == MARKED) set_pixel(r,c,MARKED);
IF (c<columns-1) && (get_pixel(r,c+1) == MARKED) set_pixel(r,c,MARKED);
IF (r<rows-1) && (get_pixel(r+1,c) == MARKED) set_pixel(r,c,MARKED);
IF (get_pixel(r,c)==MARKED) restart=true;
}
}while(restart);
for (i=0; i<columns*rows; i++)
IF (mas[i]==MARKED) mas[i] = _color;
}
dword _image::get_pixel(int _r, _c)
{
return mas[columns*_r + _c];
}
void _image::set_image(dword _inbuf)
{
dword i;
for (i = 0; i < columns*rows; i++;)
{
// mas[i] = ESDWORD[i*4+_inbuf] & 0x00FFFFFF; //for x32 bit color
mas[i] = ESDWORD[i*3+_inbuf] & 0xFFFFFF;
}
}
dword _image::get_image()
{
int r=0, c=0;
dword i;
free(img);
i = img = malloc(rows*columns*3);
for (r = 0; r < rows; r++)
for (c = 0; c < columns; c++)
{
rgb.DwordToRgb(get_pixel(r,c));
ESBYTE[i] = rgb.b;
ESBYTE[i+1] = rgb.g;
ESBYTE[i+2] = rgb.r;
i += 3;
}
return img;
}
dword _image::get_image_with_replaced_color(dword _col_from, _col_to)
{
int r=0, c=0;
dword i;
dword cur_pixel;
free(img);
i = img = malloc(rows*columns*3);
for (r = 0; r < rows; r++)
for (c = 0; c < columns; c++)
{
cur_pixel = get_pixel(r,c);
if (cur_pixel == _col_from) cur_pixel = _col_to;
rgb.DwordToRgb(cur_pixel);
ESBYTE[i] = rgb.b;
ESBYTE[i+1] = rgb.g;
ESBYTE[i+2] = rgb.r;
i += 3;
}
return img;
}
enum {
MOVE_LEFT,
MOVE_RIGHT,
MOVE_UP,
MOVE_DOWN,
FLIP_VER,
FLIP_HOR,
ROTATE_LEFT,
ROTATE_RIGHT
};
void _image::move(int _direction)
{
int r, c;
dword first_element_data;
switch(_direction)
{
case MOVE_LEFT:
for (r = 0; r < rows; r++)
{
first_element_data = get_pixel(r, 0);
for (c = 0; c < columns-1; c++) set_pixel(r, c, get_pixel(r, c+1));
set_pixel(r, columns-1, first_element_data);
}
break;
case MOVE_RIGHT:
for (r = 0; r < rows; r++)
{
first_element_data = get_pixel(r, columns-1);
for (c = columns-1; c > 0; c--) set_pixel(r, c, get_pixel(r, c-1));
set_pixel(r, 0, first_element_data);
}
break;
case MOVE_UP:
for (c = 0; c < columns; c++)
{
first_element_data = get_pixel(0, c);
for (r = 0; r < rows-1; r++) set_pixel(r, c, get_pixel(r+1, c));
set_pixel(rows-1, c, first_element_data);
}
break;
case MOVE_DOWN:
for (c = 0; c < columns; c++)
{
first_element_data = get_pixel(rows-1, c);
for (r = rows-1; r > 0; r--) set_pixel(r, c, get_pixel(r-1, c));
set_pixel(0, c, first_element_data);
}
break;
case FLIP_HOR:
for (r = 0; r < rows; r++)
for (c = 0; c < columns/2; c++) {
first_element_data = get_pixel(r, c);
set_pixel(r, c, get_pixel(r, columns-c-1));
set_pixel(r, columns-c-1, first_element_data);
}
break;
case FLIP_VER:
for (c = 0; c < columns; c++)
for (r = 0; r < rows/2; r++) {
first_element_data = get_pixel(r, c);
set_pixel(r, c, get_pixel(rows-r-1, c));
set_pixel(rows-r-1, c, first_element_data);
}
break;
case ROTATE_LEFT:
//slow but the code is simple
//need to rewrite in case of big images support
move(ROTATE_RIGHT);
move(ROTATE_RIGHT);
move(ROTATE_RIGHT);
break;
case ROTATE_RIGHT:
if (columns!=rows) {
notify("Sorry, rotate is implemented for square canvaces only!");
break;
}
for (r=0; r<MAX_CELL_SIZE*MAX_CELL_SIZE; r++) {
mas_copy[r] = mas[r];
}
for (c = 0; c < columns; c++)
for (r = 0; r < rows; r++) {
set_pixel(c, rows-r-1, mas_copy[columns*r + c]);
}
columns >< rows;
break;
}
}
/*
1234
5678
90AB
951
0
A
B
*/