int32
ColorField::_UpdateThread(void *data)
{
// initialization
ColorField *colorField = (ColorField *)data;
BLooper *looper = colorField->Looper();
if (looper)
looper->Lock();
BBitmap* bitmap = colorField->fBgBitmap[0];
BView* view = colorField->fBgView[0];
port_id port = colorField->fUpdatePort;
if (looper)
looper->Unlock();
// draw
float h, s, v, r, g, b;
int R, G, B;
int32 msg_code;
char msg_buffer;
while (true) {
port_info info;
do {
read_port(port, &msg_code, &msg_buffer, sizeof(msg_buffer));
get_port_info(port, &info);
} while (info.queue_count);
if (looper)
looper->Lock();
uint colormode = colorField->fColorMode;
float fixedvalue = colorField->fFixedValue;
if (looper)
looper->Unlock();
bitmap->Lock();
view->BeginLineArray(256 * 256);
switch (colormode)
{
case R_SELECTED:
{
R = round(fixedvalue * 255);
for (int G = 0; G < 256; ++G)
for (int B = 0; B < 256; ++B)
DrawColorPoint(BPoint(G, 255.0 - B), R, G, B);
break;
}
case G_SELECTED:
{
G = round(fixedvalue * 255);
for (int R = 0; R < 256; ++R)
for (int B = 0; B < 256; ++B)
DrawColorPoint(BPoint(R, 255.0 - B), R, G, B);
break;
}
case B_SELECTED:
{
B = round(fixedvalue * 255);
for (int R = 0; R < 256; ++R)
for (int G = 0; G < 256; ++G)
DrawColorPoint(BPoint(R, 255.0 - G), R, G, B);
break;
}
case H_SELECTED:
{
h = fixedvalue;
for (int x = 0; x < 256; ++x) {
s = (float)x / 255.0;
for (int y = 0; y < 256; ++y) {
v = (float)y / 255.0;
HSV_to_RGB(h, s, v, r, g, b);
DrawColorPoint(BPoint(x, 255.0 - y), round(r * 255.0),
round(g * 255.0), round(b * 255.0));
}
}
break;
}
case S_SELECTED:
{
s = fixedvalue;
for (int x = 0; x < 256; ++x) {
h = 6.0 / 255 * x;
for (int y = 0; y<256; ++y) {
v = (float)y / 255.0;
HSV_to_RGB(h, s, v, r, g, b);
DrawColorPoint(BPoint(x, 255.0 - y), round(r * 255.0),
round(g * 255.0), round(b * 255.0));
}
}
break;
}
case V_SELECTED:
{
v = fixedvalue;
for (int x = 0; x < 256; ++x) {
h = 6.0 / 255 * x;
for (int y = 0; y < 256; ++y) {
s = (float)y / 255.0;
HSV_to_RGB(h, s, v, r, g, b);
DrawColorPoint(BPoint(x, 255.0 - y), round(r * 255.0),
round(g * 255.0), round(b * 255.0));
}
}
break;
}
}
view->EndLineArray();
view->Sync();
bitmap->Unlock();
looper = colorField->Looper();
if (looper && looper->Lock()) {
colorField->Update(2);
looper->Unlock();
}
}
return 0;
}
