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@ -1452,6 +1452,8 @@ static void ShowStationBuilder(Window *parent)
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struct BuildSignalWindow : public PickerWindowBase {
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private:
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Dimension sig_sprite_size; ///< Maximum size of signal GUI sprites.
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/**
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* Draw dynamic a signal-sprite in a button in the signal GUI
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* Draw the sprite +1px to the right and down if the button is lowered
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@ -1495,6 +1497,29 @@ public:
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_convert_signal_button = false;
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}
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virtual void OnInit()
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{
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/* Calculate maximum signal sprite size. */
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this->sig_sprite_size.width = 0;
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this->sig_sprite_size.height = 0;
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const RailtypeInfo *rti = GetRailTypeInfo(_cur_railtype);
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for (uint type = SIGTYPE_NORMAL; type < SIGTYPE_END; type++) {
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for (uint variant = SIG_ELECTRIC; variant <= SIG_SEMAPHORE; variant++) {
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for (uint lowered = 0; lowered < 2; lowered++) {
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this->sig_sprite_size = maxdim(this->sig_sprite_size, GetSpriteSize(rti->gui_sprites.signals[type][variant][lowered]));
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}
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}
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}
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}
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virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
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{
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if (IsInsideMM(widget, WID_BS_SEMAPHORE_NORM, WID_BS_ELECTRIC_PBS_OWAY + 1)) {
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size->width = max(size->width, this->sig_sprite_size.width + WD_IMGBTN_LEFT + WD_IMGBTN_RIGHT);
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size->height = max(size->height, this->sig_sprite_size.height + WD_IMGBTN_TOP + WD_IMGBTN_BOTTOM);
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}
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}
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virtual void SetStringParameters(int widget) const
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{
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switch (widget) {
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