getMultiScreenInfo.memo.cpp

vector<ofRectangle> ofApp::getMonitorInfo(int* count, ofRectangle* whole)
{
    GLFWmonitor** monitor;
    GLFWvidmode const* mode;
    ofRectangle rect;
    vector<ofRectangle> temp;
    int c;
    int x;
    int y;
    int i;
    vector<ofRectangle> result;
    
    monitor = glfwGetMonitors(&c);
    if (c > 0) {
        rect.set(FLT_MAX, FLT_MAX, FLT_MIN, FLT_MIN);
        for (i = 0; i < c; ++i) {
            mode = glfwGetVideoMode(monitor[i]);
            glfwGetMonitorPos(monitor[i], &x, &y);
            if (x < rect.x) {
                rect.x = x;
            }
            if (y < rect.y) {
                rect.y = y;
            }
            if (x + mode->width > rect.width) {
                rect.width = x + mode->width;
            }
            if (y + mode->height > rect.height) {
                rect.height = y + mode->height;
            }
            temp.push_back(ofRectangle(x, y, mode->width, mode->height));
        }
        rect.width -= rect.x;
        rect.height -= rect.y;
        for (i = 0; i < temp.size(); ++i) {
            temp[i].x -= rect.x;
            temp[i].y -= rect.y;
        }
        rect.x = 0;
        rect.y = 0;
        if (count != NULL) {
            *count = c;
        }
        if (whole != NULL) {
            *whole = rect;
        }
        while (temp.size() > 0) {
            rect.x = FLT_MAX;
            c = -1;
            for (i = 0; i < temp.size(); ++i) {
                if (temp[i].x < rect.x) {
                    rect.x = temp[i].x;
                    c = i;
                }
            }
            if (c > -1) {
                result.push_back(temp[c]);
                temp.erase(temp.begin() + c);
            }
        }
    }
    else {
        if (count != NULL) {
            *count = 0;
        }
        if (whole != NULL) {
            whole->set(0, 0, 0, 0);
        }
    }
    return result;
}