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@@ -2255,9 +2255,11 @@ bool CompareWidgetArrays(const Widget *o
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* @param count Length of the \a parts array.
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* @param dest Address of pointer to use for returning the composed widget.
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* @param fill_dest Fill the composed widget with child widgets.
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* @param biggest_index Pointer to biggest nested widget index in the tree encountered so far.
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* @return Number of widget part elements used to compose the widget.
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* @precond \c biggest_index != NULL.
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*/
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static int MakeNWidget(const NWidgetPart *parts, int count, NWidgetBase **dest, bool *fill_dest)
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static int MakeNWidget(const NWidgetPart *parts, int count, NWidgetBase **dest, bool *fill_dest, int *biggest_index)
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{
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int num_used = 0;
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@@ -2288,6 +2290,7 @@ static int MakeNWidget(const NWidgetPart
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case WWT_FRAME:
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if (*dest != NULL) return num_used;
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*dest = new NWidgetBackground(parts->type, parts->u.widget.colour, parts->u.widget.index);
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*biggest_index = max(*biggest_index, (int)parts->u.widget.index);
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*fill_dest = true;
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break;
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@@ -2297,11 +2300,15 @@ static int MakeNWidget(const NWidgetPart
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*fill_dest = true;
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break;
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case WPT_FUNCTION:
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case WPT_FUNCTION: {
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if (*dest != NULL) return num_used;
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*dest = parts->u.func_ptr();
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/* Ensure proper functioning even when the called code simply writes its largest index. */
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int biggest = -1;
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*dest = parts->u.func_ptr(&biggest);
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*biggest_index = max(*biggest_index, biggest);
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*fill_dest = false;
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break;
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}
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case NWID_SELECTION:
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case NWID_LAYERED:
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@@ -2391,6 +2398,7 @@ static int MakeNWidget(const NWidgetPart
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if (*dest != NULL) return num_used;
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assert((parts->type & WWT_MASK) < NWID_HORIZONTAL);
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*dest = new NWidgetLeaf(parts->type, parts->u.widget.colour, parts->u.widget.index, 0x0, STR_NULL);
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*biggest_index = max(*biggest_index, (int)parts->u.widget.index);
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break;
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}
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num_used++;
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@@ -2405,9 +2413,11 @@ static int MakeNWidget(const NWidgetPart
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* @param parts Array with parts of the nested widgets.
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* @param count Length of the \a parts array.
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* @param parent Container to use for storing the child widgets.
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* @param biggest_index Pointer to biggest nested widget index in the tree.
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* @return Number of widget part elements used to fill the container.
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* @postcond \c *biggest_index contains the largest widget index of the tree and \c -1 if no index is used.
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*/
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static int MakeWidgetTree(const NWidgetPart *parts, int count, NWidgetBase *parent)
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static int MakeWidgetTree(const NWidgetPart *parts, int count, NWidgetBase *parent, int *biggest_index)
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{
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/* Given parent must be either a #NWidgetContainer or a #NWidgetBackground object. */
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NWidgetContainer *nwid_cont = dynamic_cast<NWidgetContainer *>(parent);
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@@ -2418,7 +2428,7 @@ static int MakeWidgetTree(const NWidgetP
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while (true) {
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NWidgetBase *sub_widget = NULL;
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bool fill_sub = false;
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int num_used = MakeNWidget(parts, count - total_used, &sub_widget, &fill_sub);
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int num_used = MakeNWidget(parts, count - total_used, &sub_widget, &fill_sub, biggest_index);
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parts += num_used;
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total_used += num_used;
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@@ -2433,7 +2443,7 @@ static int MakeWidgetTree(const NWidgetP
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WidgetType tp = sub_widget->type;
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if (fill_sub && (tp == NWID_HORIZONTAL || tp == NWID_HORIZONTAL_LTR || tp == NWID_VERTICAL
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|| tp == WWT_PANEL || tp == WWT_FRAME || tp == WWT_INSET || tp == NWID_SELECTION || tp == NWID_LAYERED)) {
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int num_used = MakeWidgetTree(parts, count - total_used, sub_widget);
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int num_used = MakeWidgetTree(parts, count - total_used, sub_widget, biggest_index);
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parts += num_used;
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total_used += num_used;
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}
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@@ -2455,8 +2465,9 @@ static int MakeWidgetTree(const NWidgetP
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*/
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NWidgetContainer *MakeNWidgets(const NWidgetPart *parts, int count)
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{
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int biggest_index = -1;
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NWidgetContainer *cont = new NWidgetVertical();
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MakeWidgetTree(parts, count, cont);
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MakeWidgetTree(parts, count, cont, &biggest_index);
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return cont;
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}
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