void GraphDrawer::initFbo(ci::Area newWindowSize)
{
auto format = ci::gl::Fbo::Format().samples(8);
edgeFbo = ci::gl::Fbo::create(newWindowSize.getWidth(), newWindowSize.getHeight(), format);
labelFbo = ci::gl::Fbo::create(newWindowSize.getWidth(), newWindowSize.getHeight(), format);
}
void TwoWindowScreenSaverApp::draw()
{
gl::clear( mBackgroundColor );
glColor3f( mColor );
// General getWindowCenter() doesn't work anymore because that
// calculation is done before our resize stuff happens. This is
// why we keep track of mMainArea.
gl::drawSolidCircle( ci::Vec2f( mMainArea.getWidth() / 2.f, mMainArea.getHeight() / 2.f ), mRadius );
}
void TwoWindowScreenSaverApp::resize( ResizeEvent event )
{
// When we resize for the first time, we'll determine if we need
// to pop up that second window on the secondary display
if(mIsFirstResize) {
mIsFirstResize = false;
// Let's make sure that if we've got two displays, we want to make sure the window size isn't smaller
// than the main display size, because if that's the case, then we're in the screen saver Preview.
if(mHasTwoDisplays) {
if(ci::Display::getMainDisplay()->getWidth() > event.getWidth()) {
mHasTwoDisplays = false;
}
}
ci::Area mainDisplayArea = ci::Display::getMainDisplay()->getArea();
if(mHasTwoDisplays) {
// First, we stick our primary window over into the main display area.
::SetWindowPos( ((RendererGl *)getRenderer())->getHwnd(),
HWND_TOPMOST,
mainDisplayArea.getX1(), mainDisplayArea.getY1(),
mainDisplayArea.getWidth(), mainDisplayArea.getHeight(),
SWP_SHOWWINDOW);
// Need to resize the GL viewport to accomodate the new size.
glViewport( 0, 0, mainDisplayArea.getWidth(), mainDisplayArea.getHeight());
cinder::CameraPersp cam( mainDisplayArea.getWidth(), mainDisplayArea.getHeight(), 60.0f );
glMatrixMode( GL_PROJECTION );
glLoadMatrixf( cam.getProjectionMatrix().m );
glMatrixMode( GL_MODELVIEW );
glLoadMatrixf( cam.getModelViewMatrix().m );
glScalef( 1.0f, -1.0f, 1.0f ); // invert Y axis so increasing Y goes down.
glTranslatef( 0.0f, (float) - mainDisplayArea.getHeight(), 0.0f ); // shift origin up to upper-left corner.
// Done with the new viewport and translation stuff.
mainDisplayArea = ci::Display::getMainDisplay()->getArea();
mMainArea = mainDisplayArea;
// Now that we know we've got two displays, we need to create the second window in the other display.
// First, we get the two displays' areas and window area so that we can determine
// proper mapping.
int displayNum = 0;
ci::Area secondArea;
std::vector<DisplayRef> displays = ci::Display::getDisplays();
std::vector<DisplayRef>::iterator it;
// Let's loop thru them and see what their offsets are.
for(it = displays.begin(); it != displays.end(); it++) {
if(displayNum != 0) {
secondArea = (*it)->getArea();
}
displayNum++;
}
// Set up the new Window struct
WNDCLASS scl;
LPCWSTR szCWinName = TEXT("Screen Saver Second Screen");
LPCWSTR szCClassName = TEXT("SCRNSAVESECOND");
HINSTANCE instance = ::GetModuleHandle( NULL );
if(!instance) {
console() << "No HINSTANCE exists." << endl;
}
scl.hInstance = instance;
scl.lpszClassName = szCClassName;
scl.lpfnWndProc = DefWindowProc;
scl.style = 0;
scl.hIcon = ::LoadIcon(NULL, IDI_WINLOGO);
scl.hCursor = ::LoadCursor(NULL, IDC_ARROW);
scl.lpszMenuName = NULL;
scl.cbClsExtra = 0;
scl.cbWndExtra = 0;
scl.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH); // Making the background black
if(! RegisterClass(&scl)) {
console() << "There was an error registering our new window class" << endl;
}
HWND secondWnd = CreateWindow(
szCClassName,
szCWinName,
WS_POPUP|WS_CHILD,
secondArea.x1, // x location
secondArea.x2, // y location
secondArea.getWidth(), // width
secondArea.getHeight(), // height
((RendererGl *)getRenderer())->getHwnd(),
NULL,
instance,
NULL
);
if(! secondWnd) {
console() << "Error: No window was created." << endl;
}
// Show and position the newly created window.
::ShowWindow( secondWnd, SW_SHOW );
::UpdateWindow( secondWnd );
::SetWindowPos( secondWnd,
HWND_TOPMOST,
secondArea.getX1(), secondArea.getY1(),
secondArea.getWidth(), secondArea.getHeight(),
SWP_SHOWWINDOW);
} else {
// Not doing two displays, so we want to count on the normal
// resize event's size that happens to determine our drawing area.
mMainArea.set(0, 0, event.getWidth(), event.getHeight());
// At this point, we can also elect to figure out if we're dealing with
// the preview display area. Because if the main display size is greater
// than the event's width / height, then we know we're dealing with
// the preview mode.
} // End check for two displays.
} // End check if first resize.
}