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-rw-r--r--src/rail_gui.cpp25
1 files changed, 25 insertions, 0 deletions
diff --git a/src/rail_gui.cpp b/src/rail_gui.cpp
index 69b15e085..713a94c05 100644
--- a/src/rail_gui.cpp
+++ b/src/rail_gui.cpp
@@ -1452,6 +1452,8 @@ static void ShowStationBuilder(Window *parent)
struct BuildSignalWindow : public PickerWindowBase {
private:
+ Dimension sig_sprite_size; ///< Maximum size of signal GUI sprites.
+
/**
* Draw dynamic a signal-sprite in a button in the signal GUI
* Draw the sprite +1px to the right and down if the button is lowered
@@ -1495,6 +1497,29 @@ public:
_convert_signal_button = false;
}
+ virtual void OnInit()
+ {
+ /* Calculate maximum signal sprite size. */
+ this->sig_sprite_size.width = 0;
+ this->sig_sprite_size.height = 0;
+ const RailtypeInfo *rti = GetRailTypeInfo(_cur_railtype);
+ for (uint type = SIGTYPE_NORMAL; type < SIGTYPE_END; type++) {
+ for (uint variant = SIG_ELECTRIC; variant <= SIG_SEMAPHORE; variant++) {
+ for (uint lowered = 0; lowered < 2; lowered++) {
+ this->sig_sprite_size = maxdim(this->sig_sprite_size, GetSpriteSize(rti->gui_sprites.signals[type][variant][lowered]));
+ }
+ }
+ }
+ }
+
+ virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
+ {
+ if (IsInsideMM(widget, WID_BS_SEMAPHORE_NORM, WID_BS_ELECTRIC_PBS_OWAY + 1)) {
+ size->width = max(size->width, this->sig_sprite_size.width + WD_IMGBTN_LEFT + WD_IMGBTN_RIGHT);
+ size->height = max(size->height, this->sig_sprite_size.height + WD_IMGBTN_TOP + WD_IMGBTN_BOTTOM);
+ }
+ }
+
virtual void SetStringParameters(int widget) const
{
switch (widget) {