Add UI scaling combobox with 4 options (one smaller than default, two larger) and experimental tag. (#3037)

soh/soh/OTRGlobals.cpp

@@ -46,6 +46,7 @@
 #include "variables.h"
 #include "z64.h"
 #include "macros.h"
+#include "Fonts.h"
 #include <Utils/StringHelper.h>
 #include "Enhancements/custom-message/CustomMessageManager.h"
 
@@ -129,6 +130,8 @@ Color_RGB8 kokiriColor = { 0x1E, 0x69, 0x1B };
 Color_RGB8 goronColor = { 0x64, 0x14, 0x00 };
 Color_RGB8 zoraColor = { 0x00, 0xEC, 0x64 };
 
+float previousImGuiScale;
+
 // Same as NaviColor type from OoT src (z_actor.c), but modified to be sans alpha channel for Controller LED.
 typedef struct {
     Color_RGB8 inner;
@@ -298,6 +301,12 @@ OTRGlobals::OTRGlobals() {
 
     hasMasterQuest = hasOriginal = false;
 
+    previousImGuiScale = defaultImGuiScale;
+    defaultFontSmaller = CreateDefaultFontWithSize(10.0f);
+    defaultFontLarger = CreateDefaultFontWithSize(16.0f);
+    defaultFontLargest = CreateDefaultFontWithSize(20.0f);
+    ScaleImGui();
+
     // Move the camera strings from read only memory onto the heap (writable memory)
     // This is in OTRGlobals right now because this is a place that will only ever be run once at the beginning of startup.
     // We should probably find some code in db_camera that does initialization and only run once, and then dealloc on deinitialization.
@@ -352,6 +361,32 @@ OTRGlobals::OTRGlobals() {
 OTRGlobals::~OTRGlobals() {
 }
 
+void OTRGlobals::ScaleImGui() {
+    float scale = imguiScaleOptionToValue[CVarGetInteger("gImGuiScale", defaultImGuiScale)];
+    float newScale = scale / previousImGuiScale;
+    ImGui::GetStyle().ScaleAllSizes(newScale);
+    ImGui::GetIO().FontGlobalScale = scale;
+    previousImGuiScale = scale;
+}
+
+ImFont* OTRGlobals::CreateDefaultFontWithSize(float size) {
+    auto mImGuiIo = &ImGui::GetIO();
+    ImFontConfig fontCfg = ImFontConfig();
+    fontCfg.OversampleH = fontCfg.OversampleV = 1;
+    fontCfg.PixelSnapH = true;
+    fontCfg.SizePixels = size;
+    ImFont* font = mImGuiIo->Fonts->AddFontDefault(&fontCfg);
+    // FontAwesome fonts need to have their sizes reduced by 2.0f/3.0f in order to align correctly
+    float iconFontSize = size * 2.0f / 3.0f;
+    static const ImWchar sIconsRanges[] = { ICON_MIN_FA, ICON_MAX_16_FA, 0 };
+    ImFontConfig iconsConfig;
+    iconsConfig.MergeMode = true;
+    iconsConfig.PixelSnapH = true;
+    iconsConfig.GlyphMinAdvanceX = iconFontSize;
+    mImGuiIo->Fonts->AddFontFromMemoryCompressedBase85TTF(fontawesome_compressed_data_base85, iconFontSize, &iconsConfig, sIconsRanges);
+    return font;
+}
+
 bool OTRGlobals::HasMasterQuest() {
     return hasMasterQuest;
 }

soh/soh/OTRGlobals.h

@@ -21,6 +21,14 @@
 const std::string customMessageTableID = "BaseGameOverrides";
 const std::string appShortName = "soh";
 
+#ifdef __WIIU__
+const uint32_t defaultImGuiScale = 3;
+#else
+const uint32_t defaultImGuiScale = 1;
+#endif
+
+const float imguiScaleOptionToValue[4] = { 0.75f, 1.0f, 1.5f, 2.0f };
+
 class OTRGlobals
 {
 public:
@@ -30,9 +38,15 @@ public:
     std::shared_ptr<SaveStateMgr> gSaveStateMgr;
     std::shared_ptr<Randomizer> gRandomizer;
 
+    ImFont* defaultFontSmaller;
+    ImFont* defaultFontLarger;
+    ImFont* defaultFontLargest;
+
     OTRGlobals();
     ~OTRGlobals();
     
+    void ScaleImGui();
+
     bool HasMasterQuest();
     bool HasOriginal();
     uint32_t GetInterpolationFPS();
@@ -42,6 +56,7 @@ private:
 	void CheckSaveFile(size_t sramSize) const;
     bool hasMasterQuest;
     bool hasOriginal;
+    ImFont* CreateDefaultFontWithSize(float size);
 };
 
 uint32_t IsGameMasterQuest();

soh/soh/SohMenuBar.cpp

@@ -51,6 +51,8 @@ std::string GetWindowButtonText(const char* text, bool menuOpen) {
     return buttonText;
 }
 
+static const char* imguiScaleOptions[4] = { "Small", "Normal", "Large", "X-Large" };
+
     static const char* filters[3] = {
 #ifdef __WIIU__
             "",
@@ -380,7 +382,15 @@ void DrawSettingsMenu() {
             }
 
             UIWidgets::PaddedSeparator(true, true, 3.0f, 3.0f);
+            ImGui::Text("ImGui Menu Scale");
+            ImGui::SameLine();
+            ImGui::TextColored({ 0.85f, 0.35f, 0.0f, 1.0f }, "(Experimental)");
+            if (UIWidgets::EnhancementCombobox("gImGuiScale", imguiScaleOptions, 1)) {
+                OTRGlobals::Instance->ScaleImGui();
+            }
+            UIWidgets::Tooltip("Changes the scaling of the ImGui menu elements.");
 
+            UIWidgets::PaddedSeparator(true, true, 3.0f, 3.0f);
             
             static std::unordered_map<LUS::WindowBackend, const char*> windowBackendNames = {
                 { LUS::WindowBackend::DX11, "DirectX" },