Step 119: zoom controls

editor/src/ZoomUtils.h

@@ -0,0 +1,14 @@
+#pragma once
+// Step 119: Zoom utilities
+
+inline int clampFontSize(int size, int minSize = 12, int maxSize = 24) {
+    if (size < minSize) return minSize;
+    if (size > maxSize) return maxSize;
+    return size;
+}
+
+inline int zoomPercent(int fontSize, float baseFontSize) {
+    if (baseFontSize <= 0.0f) return 100;
+    float pct = (fontSize / baseFontSize) * 100.0f;
+    return (int)(pct + 0.5f);
+}

editor/src/main.cpp

@@ -48,6 +48,7 @@
 #include "Orchestrator.h"
 #include "ProjectManager.h"
 #include "SessionManager.h"
+#include "ZoomUtils.h"
 #include "ast/Serialization.h"
 #include "ast/Generator.h"
 #include "ast/Annotation.h"
@@ -1962,6 +1963,17 @@ int main(int, char**) {
                     state.commandSelected = 0;
                 }
 
+                auto applyFontSize = [&](int newSize) {
+                    newSize = clampFontSize(newSize);
+                    state.settings.setFontSize(newSize);
+                    io.FontGlobalScale = newSize / baseFontSize;
+                    state.saveSettingsToDisk();
+                };
+
+                if ((sdlMod & KMOD_CTRL) && sym == SDLK_0) {
+                    applyFontSize((int)baseFontSize);
+                }
+
                 if (key != 0 && mods != WMOD_NONE) {
                     KeyCombo combo{key, mods};
                     std::string action = state.keys.getAction(combo);
@@ -1979,6 +1991,8 @@ int main(int, char**) {
                         std::string lang = state.active() ? state.active()->language : "python";
                         state.createBuffer(state.makeUntitledName(), "", lang);
                     }
+                    else if (action == "view.zoomIn")  applyFontSize(state.settings.getFontSize() + 1);
+                    else if (action == "view.zoomOut") applyFontSize(state.settings.getFontSize() - 1);
                 }
             }
         }
@@ -4009,6 +4023,10 @@ int main(int, char**) {
             ImGui::Text("Keys: %s", KeybindingManager::profileName(state.keys.getProfile()));
             ImGui::SameLine(0, 30);
 
+            // Zoom
+            ImGui::Text("Zoom: %d%%", zoomPercent(state.settings.getFontSize(), baseFontSize));
+            ImGui::SameLine(0, 30);
+
             // Modified indicator
             if (state.active() && state.active()->modified)
                 ImGui::Text("Modified");