mirror of https://github.com/OpenTTD/OpenTTD.git
Codechange: Add GetParentWidget() to widgets.
This allows to get parent widgets in the nested tree from bottom-up.
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@ -1319,6 +1319,8 @@ void NWidgetContainer::AdjustPaddingForZoom()
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*/
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void NWidgetContainer::Add(NWidgetBase *wid)
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{
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assert(wid != nullptr);
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wid->parent = this;
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assert(wid->next == nullptr && wid->prev == nullptr);
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if (this->head == nullptr) {
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@ -2170,6 +2172,7 @@ NWidgetBackground::NWidgetBackground(WidgetType tp, Colours colour, WidgetID ind
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{
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assert(tp == WWT_PANEL || tp == WWT_INSET || tp == WWT_FRAME);
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this->child = child;
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if (this->child != nullptr) this->child->parent = this;
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this->SetAlignment(SA_TOP | SA_LEFT);
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}
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@ -2190,6 +2193,7 @@ void NWidgetBackground::Add(NWidgetBase *nwid)
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if (this->child == nullptr) {
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this->child = new NWidgetVertical();
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}
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nwid->parent = this->child;
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this->child->Add(nwid);
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}
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@ -2208,6 +2212,7 @@ void NWidgetBackground::SetPIP(uint8_t pip_pre, uint8_t pip_inter, uint8_t pip_p
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if (this->child == nullptr) {
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this->child = new NWidgetVertical();
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}
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this->child->parent = this;
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this->child->SetPIP(pip_pre, pip_inter, pip_post);
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}
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@ -2226,6 +2231,7 @@ void NWidgetBackground::SetPIPRatio(uint8_t pip_ratio_pre, uint8_t pip_ratio_int
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if (this->child == nullptr) {
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this->child = new NWidgetVertical();
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}
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this->child->parent = this;
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this->child->SetPIPRatio(pip_ratio_pre, pip_ratio_inter, pip_ratio_post);
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}
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@ -144,6 +144,34 @@ public:
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virtual NWidgetCore *GetWidgetFromPos(int x, int y) = 0;
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virtual NWidgetBase *GetWidgetOfType(WidgetType tp);
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/**
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* Get parent widget of type NWID.
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* @tparam NWID Type of the nested widget.
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* @returns Parent widget, or nullptr if no widget of the specified type is found.
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*/
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template <class NWID>
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NWID *GetParentWidget()
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{
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for (NWidgetBase *nwid_parent = this->parent; nwid_parent != nullptr; nwid_parent = nwid_parent->parent) {
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if (NWID *nwid = dynamic_cast<NWID *>(nwid_parent); nwid != nullptr) return nwid;
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}
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return nullptr;
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}
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/**
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* Get parent widget of type NWID.
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* @tparam NWID Type of the nested widget.
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* @returns Parent widget, or nullptr if no widget of the specified type is found.
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*/
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template <class NWID>
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const NWID *GetParentWidget() const
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{
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for (const NWidgetBase *nwid_parent = this->parent; nwid_parent != nullptr; nwid_parent = nwid_parent->parent) {
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if (const NWID *nwid = dynamic_cast<const NWID *>(nwid_parent); nwid != nullptr) return nwid;
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}
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return nullptr;
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}
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virtual bool IsHighlighted() const { return false; }
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virtual TextColour GetHighlightColour() const { return TC_INVALID; }
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virtual void SetHighlighted([[maybe_unused]] TextColour highlight_colour) {}
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@ -213,6 +241,8 @@ public:
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RectPadding padding; ///< Padding added to the widget. Managed by parent container widget. (parent container may swap left and right for RTL)
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RectPadding uz_padding; ///< Unscaled padding, for resize calculation.
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NWidgetBase *parent; ///< Parent widget of this widget, automatically filled in when added to container.
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protected:
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inline void StoreSizePosition(SizingType sizing, int x, int y, uint given_width, uint given_height);
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};
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