void print(GrayscaleBuffer& buffer)
{
for(int y = 0; y < buffer.get_height(); ++y)
{
for(int x = 0; x < buffer.get_width(); ++x)
{
printf("%3d ", int(buffer.at(x,y)));
}
putchar('\n');
}
putchar('\n');
}
void
Controller::update_mouse_cursor()
{ // FIXME: This could need some cleanup/feature enhancements
if (client_draw_param->generic_brush.radius < 5.0f)
return ;
GrayscaleBuffer* brush = client_draw_param->brush_buffer;
int w = brush->get_width();
int pitch = brush->get_width()/8 + 1;
int h = brush->get_height();
int len = pitch * h;
Uint8* data = new Uint8[len];
Uint8* mask = new Uint8[len];
memset(data, 0, len);
memset(mask, 0, len);
for(int y = 1; y < brush->get_height()-1; ++y)
for(int x = 1; x < brush->get_width()-1; ++x)
{
int threshold = 64;
Uint8 check = 0;
if (((x / 1) % 2) ^ (y / 1) % 2)
check = 1;
if ((brush->at(x-1, y) < threshold &&
brush->at(x+1, y) > threshold)
||
(brush->at(x-1, y) > threshold &&
brush->at(x+1, y) < threshold)
||
(brush->at(x, y-1) < threshold &&
brush->at(x, y+1) > threshold)
||
(brush->at(x, y-1) > threshold &&
brush->at(x, y+1) < threshold)
)
{ // black
data[y * pitch + x/8] |= (check << (7 - (x%8)));
mask[y * pitch + x/8] |= (0x01 << (7 - (x%8)));
}
}
if (w > 7 && h > 7)
{
int y = h / 2;
int x = 0;
for(x = w/2 - 3; x <= w/2 + 3; ++x)
{
data[y * pitch + x/8] |= (0x01 << (7 - (x%8)));
mask[y * pitch + x/8] |= (0x01 << (7 - (x%8)));
}
x = w / 2;
for(int y = h/2 - 3; y <= h/2 + 3; ++y)
{
data[y * pitch + x/8] |= (0x01 << (7 - (x%8)));
mask[y * pitch + x/8] |= (0x01 << (7 - (x%8)));
}
y = h / 2;
for(x = w/2 - 1; x <= w/2 + 1; ++x)
{
data[y * pitch + x/8] ^= (0x01 << (7 - (x%8)));
mask[y * pitch + x/8] |= (0x01 << (7 - (x%8)));
}
x = w / 2;
for(int y = h/2 - 1; y <= h/2 + 1; ++y)
{
data[y * pitch + x/8] ^= (0x01 << (7 - (x%8)));
mask[y * pitch + x/8] |= (0x01 << (7 - (x%8)));
}
}
SDL_Cursor* cursor = SDL_CreateCursor(data, mask, pitch*8, h,
w/2, h/2);
SDL_SetCursor(cursor);
delete[] mask;
delete[] data;
}