From 983f01cb8a2eaecd162e5734de88c461ef197b34 Mon Sep 17 00:00:00 2001
From: Star Rauchenberger <fefferburbia@gmail.com>
Date: Sun, 19 May 2024 12:24:00 -0400
Subject: Zoom in/out menu items with keyboard shortcuts

---
 src/subway_map.cpp | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

(limited to 'src/subway_map.cpp')

diff --git a/src/subway_map.cpp b/src/subway_map.cpp
index 98d544c..69bf51b 100644
--- a/src/subway_map.cpp
+++ b/src/subway_map.cpp
@@ -119,6 +119,26 @@ void SubwayMap::UpdateSunwarp(SubwaySunwarp from_sunwarp,
                     GD_GetSubwayItemForSunwarp(to_sunwarp));
 }
 
+void SubwayMap::Zoom(bool in) {
+  wxPoint focus_point;
+
+  if (mouse_position_) {
+    focus_point = *mouse_position_;
+  } else {
+    focus_point = {GetSize().GetWidth() / 2, GetSize().GetHeight() / 2};
+  }
+
+  if (in) {
+    if (zoom_ < 3.0) {
+      SetZoom(zoom_ + 0.25, focus_point);
+    }
+  } else {
+    if (zoom_ > 1.0) {
+      SetZoom(zoom_ - 0.25, focus_point);
+    }
+  }
+}
+
 void SubwayMap::OnPaint(wxPaintEvent &event) {
   if (GetSize() != rendered_.GetSize()) {
     wxSize panel_size = GetSize();
@@ -372,6 +392,8 @@ void SubwayMap::OnMouseMove(wxMouseEvent &event) {
 
   SetScrollSpeed(scroll_x, scroll_y);
 
+  mouse_position_ = event.GetPosition();
+
   event.Skip();
 }
 
@@ -390,7 +412,10 @@ void SubwayMap::OnMouseScroll(wxMouseEvent &event) {
   event.Skip();
 }
 
-void SubwayMap::OnMouseLeave(wxMouseEvent &event) { SetScrollSpeed(0, 0); }
+void SubwayMap::OnMouseLeave(wxMouseEvent &event) {
+  SetScrollSpeed(0, 0);
+  mouse_position_ = std::nullopt;
+}
 
 void SubwayMap::OnTimer(wxTimerEvent &event) {
   SetZoomPos({zoom_x_ + scroll_x_, zoom_y_ + scroll_y_});
@@ -464,7 +489,8 @@ void SubwayMap::Redraw() {
 
     wxPoint real_area_pos = {subway_item.x, subway_item.y};
 
-    int real_area_size = (draw_type == ItemDrawType::kOwl ? OWL_ACTUAL_SIZE : AREA_ACTUAL_SIZE);
+    int real_area_size =
+        (draw_type == ItemDrawType::kOwl ? OWL_ACTUAL_SIZE : AREA_ACTUAL_SIZE);
 
     if (draw_type == ItemDrawType::kBox) {
       dc.SetPen(*wxThePenList->FindOrCreatePen(*wxBLACK, 1));
-- 
cgit 1.4.1