MCGAffineTransform view_get_stack_transform(MCStackFullscreenMode p_mode, MCRectangle p_stack_rect, MCRectangle p_screen_rect)
{
MCGFloat t_scale;
MCGAffineTransform t_transform;
switch (p_mode)
{
case kMCStackFullscreenModeNone:
return MCGAffineTransformMakeIdentity();
case kMCStackFullscreenResize:
return MCGAffineTransformMakeIdentity();
case kMCStackFullscreenExactFit:
return MCGAffineTransformMakeScale((MCGFloat)p_screen_rect.width / (MCGFloat)p_stack_rect.width, (MCGFloat)p_screen_rect.height / (MCGFloat)p_stack_rect.height);
case kMCStackFullscreenLetterbox:
case kMCStackFullscreenShowAll:
t_scale = MCMin((MCGFloat)p_screen_rect.width / (MCGFloat)p_stack_rect.width, (MCGFloat)p_screen_rect.height / (MCGFloat)p_stack_rect.height);
t_transform = MCGAffineTransformMakeTranslation(-(MCGFloat)p_stack_rect.width / 2.0, -(MCGFloat)p_stack_rect.height / 2.0);
t_transform = MCGAffineTransformPreScale(t_transform, t_scale, t_scale);
t_transform = MCGAffineTransformPreTranslate(t_transform, (MCGFloat)p_screen_rect.width / 2.0, (MCGFloat)p_screen_rect.height / 2.0);
return t_transform;
case kMCStackFullscreenNoBorder:
t_scale = MCMax((MCGFloat)p_screen_rect.width / (MCGFloat)p_stack_rect.width, (MCGFloat)p_screen_rect.height / (MCGFloat)p_stack_rect.height);
t_transform = MCGAffineTransformMakeTranslation(-(MCGFloat)p_stack_rect.width / 2.0, -(MCGFloat)p_stack_rect.height / 2.0);
t_transform = MCGAffineTransformPreScale(t_transform, t_scale, t_scale);
t_transform = MCGAffineTransformPreTranslate(t_transform, (MCGFloat)p_screen_rect.width / 2.0, (MCGFloat)p_screen_rect.height / 2.0);
return t_transform;
case kMCStackFullscreenNoScale:
// offset so stack is centered in screen
MCRectangle t_rect;
t_rect = MCU_center_rect(p_screen_rect, p_stack_rect);
// IM-2013-12-19: [[ Bug 11590 ]] Adjust for screen rect origins other than 0,0
return MCGAffineTransformMakeTranslation(t_rect.x - p_screen_rect.x, t_rect.y - p_screen_rect.y);
default:
MCUnreachableReturn(MCGAffineTransformMakeIdentity());
}
}
MCGAffineTransform MCStack::view_getroottransform(void) const
{
return MCGAffineTransformMakeTranslation(m_view_rect.x, m_view_rect.y);
}