From 49c7d3272727cdb532e3f5911aac456704482b5c Mon Sep 17 00:00:00 2001
From: falkTX <falktx@falktx.com>
Date: Fri, 4 Feb 2022 00:11:49 +0000
Subject: [PATCH] extend expanders in carla and ildaeil to show active state

---
 plugins/Cardinal/src/Carla.cpp     | 30 ++++++++++++++++++++++
 plugins/Cardinal/src/Expanders.cpp |  8 +++---
 plugins/Cardinal/src/Ildaeil.cpp   | 40 ++++++++++++++++++++++++------
 3 files changed, 68 insertions(+), 10 deletions(-)

diff --git a/plugins/Cardinal/src/Carla.cpp b/plugins/Cardinal/src/Carla.cpp
index 121390b..fd39362 100644
--- a/plugins/Cardinal/src/Carla.cpp
+++ b/plugins/Cardinal/src/Carla.cpp
@@ -463,6 +463,7 @@ static intptr_t host_dispatcher(const NativeHostHandle handle, const NativeHostD
 #ifndef HEADLESS
 struct CarlaModuleWidget : ModuleWidgetWith9HP, IdleCallback {
     CarlaModule* const module;
+    bool hasLeftSideExpander = false;
     bool idleCallbackActive = false;
     bool visible = false;
 
@@ -578,6 +579,26 @@ struct CarlaModuleWidget : ModuleWidgetWith9HP, IdleCallback {
     {
         drawBackground(args.vg);
         drawOutputJacksArea(args.vg, CarlaModule::NUM_INPUTS);
+
+        if (hasLeftSideExpander)
+        {
+            nvgBeginPath(args.vg);
+            nvgRect(args.vg, 1, 90 - 19, 18, 49 * 6 - 4);
+            nvgFillPaint(args.vg, nvgLinearGradient(args.vg, 0, 0, 18, 0, nvgRGB(0xd0, 0xd0, 0xd0), nvgRGBA(0xd0, 0xd0, 0xd0, 0)));
+            nvgFill(args.vg);
+
+            for (int i=1; i<6; ++i)
+            {
+                const float y = 90 + 49 * i - 23;
+                const int col1 = 0x18 + static_cast<int>((y / box.size.y) * (0x21 - 0x18) + 0.5f);
+                const int col2 = 0x19 + static_cast<int>((y / box.size.y) * (0x22 - 0x19) + 0.5f);
+                nvgBeginPath(args.vg);
+                nvgRect(args.vg, 1, y, 18, 4);
+                nvgFillColor(args.vg, nvgRGB(col1, col2, col2));
+                nvgFill(args.vg);
+            }
+        }
+
         setupTextLines(args.vg);
 
         drawTextLine(args.vg, 0, "Audio 1");
@@ -594,6 +615,15 @@ struct CarlaModuleWidget : ModuleWidgetWith9HP, IdleCallback {
         ModuleWidgetWith9HP::draw(args);
     }
 
+    void step() override
+    {
+        hasLeftSideExpander = module != nullptr
+                            && module->leftExpander.module != nullptr
+                            && module->leftExpander.module->model == modelExpanderInputMIDI;
+
+        ModuleWidgetWith9HP::step();
+    }
+
     void showUI()
     {
         visible = true;
diff --git a/plugins/Cardinal/src/Expanders.cpp b/plugins/Cardinal/src/Expanders.cpp
index 1d75f09..34e3097 100644
--- a/plugins/Cardinal/src/Expanders.cpp
+++ b/plugins/Cardinal/src/Expanders.cpp
@@ -227,19 +227,21 @@ struct CardinalExpanderForInputMIDIWidget : ModuleWidgetWithSideScrews<> {
     {
         drawBackground(args.vg);
 
-        nvgScissor(args.vg, startX, 0.0f, box.size.x - startX, box.size.y);
         nvgFillColor(args.vg, nvgRGB(0xd0, 0xd0, 0xd0));
 
+        nvgSave(args.vg);
+        nvgIntersectScissor(args.vg, startX, 0.0f, box.size.x - startX - 1.0f, box.size.y);
+
         for (int i=0; i<CardinalExpanderForInputMIDI::NUM_INPUTS; ++i)
         {
-            const float y = startY + i* padding;
+            const float y = startY + i * padding;
 
             nvgBeginPath(args.vg);
             nvgRoundedRect(args.vg, startX, y - 19.0f, box.size.x, padding - 4.0f, 4);
             nvgFill(args.vg);
         }
 
-        nvgResetScissor(args.vg);
+        nvgRestore(args.vg);
 
         nvgBeginPath(args.vg);
         nvgRoundedRect(args.vg, 6.5f, startY - 19.0f, 3.0f, padding * 6.0f - 4.0f, 1);
diff --git a/plugins/Cardinal/src/Ildaeil.cpp b/plugins/Cardinal/src/Ildaeil.cpp
index 2b02f6e..43c5639 100644
--- a/plugins/Cardinal/src/Ildaeil.cpp
+++ b/plugins/Cardinal/src/Ildaeil.cpp
@@ -30,6 +30,7 @@
 
 #ifndef HEADLESS
 # include "ImGuiWidget.hpp"
+# include "ModuleWidgets.hpp"
 # include "extra/FileBrowserDialog.hpp"
 # include "extra/ScopedPointer.hpp"
 # include "extra/Thread.hpp"
@@ -1519,7 +1520,8 @@ static void projectLoadedFromDSP(void* const ui)
 
 // --------------------------------------------------------------------------------------------------------------------
 
-struct IldaeilModuleWidget : ModuleWidget {
+struct IldaeilModuleWidget : ModuleWidgetWithSideScrews<> {
+    bool hasLeftSideExpander = false;
     IldaeilWidget* ildaeilWidget = nullptr;
 
     IldaeilModuleWidget(IldaeilModule* const module)
@@ -1548,13 +1550,37 @@ struct IldaeilModuleWidget : ModuleWidget {
 
     void draw(const DrawArgs& args) override
     {
-        nvgBeginPath(args.vg);
-        nvgRect(args.vg, 0, 0, box.size.x, box.size.y);
-        nvgFillPaint(args.vg, nvgLinearGradient(args.vg, 0, 0, 0, box.size.y,
-                                                nvgRGB(0x18, 0x19, 0x19), nvgRGB(0x21, 0x22, 0x22)));
-        nvgFill(args.vg);
+        drawBackground(args.vg);
+
+        if (hasLeftSideExpander)
+        {
+            nvgBeginPath(args.vg);
+            nvgRect(args.vg, 1, 90 - 19, 18, 49 * 6 - 4);
+            nvgFillPaint(args.vg, nvgLinearGradient(args.vg, 0, 0, 18, 0, nvgRGB(0xd0, 0xd0, 0xd0), nvgRGBA(0xd0, 0xd0, 0xd0, 0)));
+            nvgFill(args.vg);
+
+            for (int i=1; i<6; ++i)
+            {
+                const float y = 90 + 49 * i - 23;
+                const int col1 = 0x18 + static_cast<int>((y / box.size.y) * (0x21 - 0x18) + 0.5f);
+                const int col2 = 0x19 + static_cast<int>((y / box.size.y) * (0x22 - 0x19) + 0.5f);
+                nvgBeginPath(args.vg);
+                nvgRect(args.vg, 1, y, 18, 4);
+                nvgFillColor(args.vg, nvgRGB(col1, col2, col2));
+                nvgFill(args.vg);
+            }
+        }
+
+        ModuleWidgetWithSideScrews::draw(args);
+    }
+
+    void step() override
+    {
+        hasLeftSideExpander = module != nullptr
+                            && module->leftExpander.module != nullptr
+                            && module->leftExpander.module->model == modelExpanderInputMIDI;
 
-        ModuleWidget::draw(args);
+        ModuleWidgetWithSideScrews::step();
     }
 
     DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(IldaeilModuleWidget)