void Content::render(ContentWindowManagerPtr window)
{
double x, y, w, h;
window->getCoordinates(x, y, w, h);
double centerX, centerY;
window->getCenter(centerX, centerY);
double zoom = window->getZoom();
// calculate texture coordinates
float tX = centerX - 0.5 / zoom;
float tY = centerY - 0.5 / zoom;
float tW = 1./zoom;
float tH = 1./zoom;
// transform to a normalize coordinate system so the content can be rendered at (x,y,w,h) = (0,0,1,1)
glPushMatrix();
glTranslatef(x, y, 0.);
glScalef(w, h, 1.);
// render the factory object
renderFactoryObject(tX, tY, tW, tH);
// render the context view
if(g_displayGroupManager->getOptions()->getShowZoomContext() == true && zoom > 1.)
{
float sizeFactor = 0.25;
float padding = 0.02;
float deltaZ = 0.001;
float alpha = 0.5;
float borderPixels = 5.;
glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT | GL_LINE_BIT);
glPushMatrix();
// position at lower left
glTranslatef(padding, 1. - sizeFactor - padding, deltaZ);
glScalef(sizeFactor, sizeFactor, 1.);
// render border rectangle
glColor4f(1,1,1,1);
glLineWidth(borderPixels);
glBegin(GL_LINE_LOOP);
glVertex2d(0., 0.);
glVertex2d(1., 0.);
glVertex2d(1., 1.);
glVertex2d(0., 1.);
glEnd();
// render the factory object (full view)
glTranslatef(0., 0., deltaZ);
renderFactoryObject(0., 0., 1., 1.);
// draw context rectangle border
glTranslatef(0., 0., deltaZ);
glLineWidth(borderPixels);
glBegin(GL_LINE_LOOP);
glVertex2d(tX, tY);
glVertex2d(tX + tW, tY);
glVertex2d(tX + tW, tY + tH);
glVertex2d(tX, tY + tH);
glEnd();
// draw context rectangle blended
glTranslatef(0., 0., deltaZ);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glColor4f(1.,1.,1., alpha);
GLWindow::drawRectangle(tX, tY, tW, tH);
glPopMatrix();
glPopAttrib();
}
glPopMatrix();
}
