/**
* Add a window to the window stack.
* @param w Window to add.
*/
void WindowManager::AddToStack(Window *w)
{
assert(w->lower == nullptr && w->higher == nullptr);
assert(!this->HasWindow(w));
uint w_prio = GetWindowZPriority(w->wtype);
if (this->top == nullptr || w_prio >= GetWindowZPriority(this->top->wtype)) {
/* Add to the top. */
w->lower = this->top;
w->higher = nullptr;
if (this->top != nullptr) this->top->higher = w;
this->top = w;
if (this->bottom == nullptr) this->bottom = w;
return;
}
Window *stack = this->top;
while (stack->lower != nullptr && w_prio < GetWindowZPriority(stack->lower->wtype)) stack = stack->lower;
w->lower = stack->lower;
if (stack->lower != nullptr) {
stack->lower->higher = w;
} else {
assert(this->bottom == stack);
this->bottom = w;
}
w->higher = stack;
stack->lower = w;
}
/**
* Raise a window.
* @param w Window to raise.
*/
void WindowManager::RaiseWindow(Window *w)
{
if (w != this->top && GetWindowZPriority(w->wtype) >= GetWindowZPriority(w->higher->wtype)) {
this->RemoveFromStack(w);
this->AddToStack(w);
w->MarkDirty();
}
}
/**
* Is the screen empty below the rectangle?
* @param rect Area to test.
* @return Tested area is clear.
*/
bool ComputeInitialPosition::IsScreenEmpty(const Rectangle32 &rect)
{
uint new_prio = GetWindowZPriority(this->skip->wtype);
if (rect.base.x < 0 || rect.base.y < 0
|| rect.base.x + rect.width > _video.GetXSize()
|| rect.base.y + rect.height > _video.GetYSize()) return false;
for (Window *w = _window_manager.top; w != nullptr; w = w->lower) {
if (w == this->skip || new_prio > GetWindowZPriority(w->wtype)) continue;
if (w->rect.Intersects(rect)) return false;
}
return true;
}
/**
* Add a window to the window stack.
* @param w Window to add.
*/
void WindowManager::AddToStack(Window *w)
{
assert(w->lower == nullptr && w->higher == nullptr);
assert(!this->HasWindow(w));
if (w->wtype == WC_MAINDISPLAY) { // Add the main world display as viewport.
assert(this->viewport == nullptr);
this->viewport = static_cast<Viewport *>(w);
}
if (this->select_valid && this->select_window != nullptr) this->select_window->selector->MarkDirty();
this->select_valid = false;
uint w_prio = GetWindowZPriority(w->wtype);
if (this->top == nullptr || w_prio >= GetWindowZPriority(this->top->wtype)) {
/* Add to the top. */
w->lower = this->top;
w->higher = nullptr;
if (this->top != nullptr) this->top->higher = w;
this->top = w;
if (this->bottom == nullptr) this->bottom = w;
return;
}
Window *stack = this->top;
while (stack->lower != nullptr && w_prio < GetWindowZPriority(stack->lower->wtype)) stack = stack->lower;
w->lower = stack->lower;
if (stack->lower != nullptr) {
stack->lower->higher = w;
} else {
assert(this->bottom == stack);
this->bottom = w;
}
w->higher = stack;
stack->lower = w;
}