Added half/full scale (HDPI) GUI.

martinic · Feb 21, 2023 · afcb593 · afcb593
1 parent 7c09bde
commit afcb593
Show file tree

Hide file tree

Showing 12 changed files with 240 additions and 10 deletions.
diff --git a/DrMixAISynth.cpp b/DrMixAISynth.cpp
@@ -4,10 +4,12 @@
 #include <string.h>
 
 DrMixAISynth::DrMixAISynth(void *instance):
-  IPLUG_CTOR(kNumParams, 0, instance),
+  IPLUG_CTOR(kNumParams, 1, instance),
   m_synth(new SawtoothSynth()),
   m_note_on(-1)
 {
+  // Plugin parameters
+
   AddParam(kParamEnvelope, new IBoolParam("Envelope", false));
   AddParam(kParamAttackTime, new IDoubleExpParam(3, "Attack", 100, 1, 5000, 0, "ms"));
   AddParam(kParamDecayTime, new IDoubleExpParam(3, "Decay", 200, 1, 5000, 0, "ms"));
@@ -19,6 +21,65 @@ DrMixAISynth::DrMixAISynth(void *instance):
 
   AddParam(kParamLFOFrequency, new IDoubleExpParam(3, "LFO Rate", 2, 0.1, 10, 2, "Hz"));
   AddParam(kParamLFOAmplitude, new IDoubleParam("LFO Depth", 0, 0, 1000, 0, "Hz"));
+
+  MakeDefaultPreset("Default");
+
+  // GUI
+
+  IGraphics *pGraphics = MakeGraphics(this, 1200, 680);
+
+  pGraphics->SetDefaultScale(IGraphics::kScaleHalf);
+  pGraphics->EnableTooltips(true);
+  pGraphics->HandleMouseWheel(IGraphics::kMouseWheelModKey);
+
+  IBitmap background(BACKGROUND_PNG_ID, pGraphics->Width(), pGraphics->Height());
+  pGraphics->AttachBackground(new IBackgroundControl(this, &background));
+
+  // Envelope switch/knobs
+
+  IBitmap switchBitmap(SWITCH_PNG_ID, 90, 32);
+  IControl *pSwitchControl = new ISwitchControl(this, 62, 72, kParamEnvelope, &switchBitmap);
+  pSwitchControl->SetTooltip("Envelope On/Off");
+  pGraphics->AttachControl(pSwitchControl);
+
+  IBitmap knobBitmap(KNOB_PNG_ID, 88, 88, 129);
+  IControl *pKnobControl;
+
+  pKnobControl = new IKnobMultiControl(this, 62, 150, kParamAttackTime, &knobBitmap);
+  pKnobControl->SetTooltip("Attack Time");
+  pGraphics->AttachControl(pKnobControl);
+
+  pKnobControl = new IKnobMultiControl(this, 62, 280, kParamDecayTime, &knobBitmap);
+  pKnobControl->SetTooltip("Decay Time");
+  pGraphics->AttachControl(pKnobControl);
+
+  pKnobControl = new IKnobMultiControl(this, 62, 410, kParamSustainLevel, &knobBitmap);
+  pKnobControl->SetTooltip("Sustain Level");
+  pGraphics->AttachControl(pKnobControl);
+
+  pKnobControl = new IKnobMultiControl(this, 62, 540, kParamReleaseTime, &knobBitmap);
+  pKnobControl->SetTooltip("Release Time");
+  pGraphics->AttachControl(pKnobControl);
+
+  // Filter knobs
+
+  pKnobControl = new IKnobMultiControl(this, 214, 108, kParamCutoffFrequency, &knobBitmap);
+  pKnobControl->SetTooltip("Cutoff Frequency");
+  pGraphics->AttachControl(pKnobControl);
+
+  pKnobControl = new IKnobMultiControl(this, 214, 238, kParamResonance, &knobBitmap);
+  pKnobControl->SetTooltip("Resonance");
+  pGraphics->AttachControl(pKnobControl);
+
+  pKnobControl = new IKnobMultiControl(this, 214, 368, kParamLFOFrequency, &knobBitmap);
+  pKnobControl->SetTooltip("LFO Rate");
+  pGraphics->AttachControl(pKnobControl);
+
+  pKnobControl = new IKnobMultiControl(this, 214, 498, kParamLFOAmplitude, &knobBitmap);
+  pKnobControl->SetTooltip("LFO Depth");
+  pGraphics->AttachControl(pKnobControl);
+
+  AttachGraphics(pGraphics);
 }
 
 void DrMixAISynth::SetSampleRate(double rate)
@@ -184,3 +245,37 @@ void DrMixAISynth::ProcessDoubleReplacing(const double *const *inputs, double *c
 
   m_midi_queue.Flush(samples);
 }
+
+bool DrMixAISynth::OnGUIRescale(int wantScale)
+{
+	// Load image set depending on host GUI DPI.
+	IGraphics* pGraphics = GetGUI();
+	pGraphics->Rescale(wantScale);
+
+	typedef IGraphics::BitmapResource Resource;
+
+	// Half scale image set.
+	static const Resource halfScaleImageSet[] =
+	{
+		Resource(IPLUG_RESOURCE(BACKGROUND_PNG)),
+		Resource(IPLUG_RESOURCE(SWITCH_PNG)),
+		Resource(IPLUG_RESOURCE(KNOB_PNG)),
+		Resource()
+	};
+
+	// Full scale image set.
+	static const Resource fullScaleImageSet[] =
+	{
+		Resource(IPLUG_RESOURCE(BACKGROUND_2X_PNG)),
+		Resource(IPLUG_RESOURCE(SWITCH_2X_PNG)),
+		Resource(IPLUG_RESOURCE(KNOB_2X_PNG)),
+		Resource()
+	};
+
+	const Resource* pResources = halfScaleImageSet;
+	if (wantScale == IGraphics::kScaleFull) pResources = fullScaleImageSet;
+
+	pGraphics->LoadBitmapResources(pResources);
+
+	return true;
+}
diff --git a/DrMixAISynth.h b/DrMixAISynth.h
@@ -355,6 +355,8 @@ class DrMixAISynth : public IPlug
     m_synth->Process(output, samples, gate);
   }
 
+  bool OnGUIRescale(int wantScale);
+
 private:
   SawtoothSynth *m_synth;
 

diff --git a/DrMixAISynth.rc b/DrMixAISynth.rc
@@ -1,6 +1,16 @@
 #include "resource.h"
 #include <windows.h>
 
+// Image resources.
+
+BACKGROUND_PNG_ID    PNG BACKGROUND_PNG_FN
+SWITCH_PNG_ID        PNG SWITCH_PNG_FN
+KNOB_PNG_ID          PNG KNOB_PNG_FN
+
+BACKGROUND_2X_PNG_ID PNG BACKGROUND_2X_PNG_FN
+SWITCH_2X_PNG_ID     PNG SWITCH_2X_PNG_FN
+KNOB_2X_PNG_ID       PNG KNOB_2X_PNG_FN
+
 // Version info.
 
 #ifdef VERSIONINFO_VERSION

diff --git a/DrMixAISynth.xcodeproj/project.pbxproj b/DrMixAISynth.xcodeproj/project.pbxproj
@@ -99,6 +99,24 @@
 		3D144CC428C4FAB3003FA6F7 /* IPlugCLAP.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 3D144C4F28C4F8C8003FA6F7 /* IPlugCLAP.cpp */; };
 		3D144CC528C4FAB6003FA6F7 /* IPlugCLAP.h in Headers */ = {isa = PBXBuildFile; fileRef = 3D144C5028C4F8C8003FA6F7 /* IPlugCLAP.h */; };
 		3D144CC628C4FAD4003FA6F7 /* clap.h in Headers */ = {isa = PBXBuildFile; fileRef = 3D144C5228C4F925003FA6F7 /* clap.h */; };
+		3D25412F29A398D200CB37ED /* Background.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412929A3984800CB37ED /* Background.png */; };
+		3D25413029A398D200CB37ED /* Switch.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412829A3984800CB37ED /* Switch.png */; };
+		3D25413129A398D200CB37ED /* Knob.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412A29A3984800CB37ED /* Knob.png */; };
+		3D25413229A398D200CB37ED /* Background@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412B29A3985500CB37ED /* Background@2x.png */; };
+		3D25413329A398D200CB37ED /* Switch@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412D29A3985500CB37ED /* Switch@2x.png */; };
+		3D25413429A398D200CB37ED /* Knob@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412C29A3985500CB37ED /* Knob@2x.png */; };
+		3D25413629A398E600CB37ED /* Background.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412929A3984800CB37ED /* Background.png */; };
+		3D25413729A398E600CB37ED /* Switch.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412829A3984800CB37ED /* Switch.png */; };
+		3D25413829A398E600CB37ED /* Knob.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412A29A3984800CB37ED /* Knob.png */; };
+		3D25413929A398E600CB37ED /* Background@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412B29A3985500CB37ED /* Background@2x.png */; };
+		3D25413A29A398E600CB37ED /* Switch@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412D29A3985500CB37ED /* Switch@2x.png */; };
+		3D25413B29A398E600CB37ED /* Knob@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412C29A3985500CB37ED /* Knob@2x.png */; };
+		3D25413D29A398F800CB37ED /* Background.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412929A3984800CB37ED /* Background.png */; };
+		3D25413E29A398F800CB37ED /* Switch.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412829A3984800CB37ED /* Switch.png */; };
+		3D25413F29A398F800CB37ED /* Knob.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412A29A3984800CB37ED /* Knob.png */; };
+		3D25414029A398F800CB37ED /* Background@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412B29A3985500CB37ED /* Background@2x.png */; };
+		3D25414129A398F800CB37ED /* Switch@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412D29A3985500CB37ED /* Switch@2x.png */; };
+		3D25414229A398F800CB37ED /* Knob@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 3D25412C29A3985500CB37ED /* Knob@2x.png */; };
 		3D27758225162D6300F354B7 /* IMidiQueue.h in Headers */ = {isa = PBXBuildFile; fileRef = 3D27758125162D6300F354B7 /* IMidiQueue.h */; };
 		3D27758325162D6300F354B7 /* IMidiQueue.h in Headers */ = {isa = PBXBuildFile; fileRef = 3D27758125162D6300F354B7 /* IMidiQueue.h */; };
 		3D27758525162F8400F354B7 /* denormal.h in Headers */ = {isa = PBXBuildFile; fileRef = 3D27758425162F8300F354B7 /* denormal.h */; };
@@ -296,7 +314,13 @@
 		3D144C5028C4F8C8003FA6F7 /* IPlugCLAP.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = IPlugCLAP.h; path = IPlug/IPlugCLAP.h; sourceTree = "<group>"; };
 		3D144C5228C4F925003FA6F7 /* clap.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = clap.h; path = clap/clap.h; sourceTree = "<group>"; };
 		3D144CC228C4F93B003FA6F7 /* Doctor Mix AI Synth.clap */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = "Doctor Mix AI Synth.clap"; sourceTree = BUILT_PRODUCTS_DIR; };
-		3D144CC328C4F93B003FA6F7 /* CLAP-Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; name = "CLAP-Info.plist"; path = "CLAP-Info.plist"; sourceTree = "<group>"; };
+		3D144CC328C4F93B003FA6F7 /* CLAP-Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = "CLAP-Info.plist"; sourceTree = "<group>"; };
+		3D25412829A3984800CB37ED /* Switch.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; name = Switch.png; path = img/Switch.png; sourceTree = "<group>"; };
+		3D25412929A3984800CB37ED /* Background.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; name = Background.png; path = img/Background.png; sourceTree = "<group>"; };
+		3D25412A29A3984800CB37ED /* Knob.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; name = Knob.png; path = img/Knob.png; sourceTree = "<group>"; };
+		3D25412B29A3985500CB37ED /* Background@2x.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; name = "Background@2x.png"; path = "img/Background@2x.png"; sourceTree = "<group>"; };
+		3D25412C29A3985500CB37ED /* Knob@2x.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; name = "Knob@2x.png"; path = "img/Knob@2x.png"; sourceTree = "<group>"; };
+		3D25412D29A3985500CB37ED /* Switch@2x.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; name = "Switch@2x.png"; path = "img/Switch@2x.png"; sourceTree = "<group>"; };
 		3D27758125162D6300F354B7 /* IMidiQueue.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = IMidiQueue.h; path = IPlug/IMidiQueue.h; sourceTree = "<group>"; };
 		3D27758425162F8300F354B7 /* denormal.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = denormal.h; path = WDL/denormal.h; sourceTree = "<group>"; };
 		3D31A5D1246D7760000BAC95 /* ptrlist.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ptrlist.h; path = WDL/ptrlist.h; sourceTree = "<group>"; };
@@ -444,6 +468,27 @@
 			name = clap;
 			sourceTree = "<group>";
 		};
+		3D25412629A397FE00CB37ED /* Resources */ = {
+			isa = PBXGroup;
+			children = (
+				3D25412729A3981000CB37ED /* img */,
+			);
+			name = Resources;
+			sourceTree = "<group>";
+		};
+		3D25412729A3981000CB37ED /* img */ = {
+			isa = PBXGroup;
+			children = (
+				3D25412929A3984800CB37ED /* Background.png */,
+				3D25412829A3984800CB37ED /* Switch.png */,
+				3D25412A29A3984800CB37ED /* Knob.png */,
+				3D25412B29A3985500CB37ED /* Background@2x.png */,
+				3D25412D29A3985500CB37ED /* Switch@2x.png */,
+				3D25412C29A3985500CB37ED /* Knob@2x.png */,
+			);
+			name = img;
+			sourceTree = "<group>";
+		};
 		3D529C12245847D400527485 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
@@ -626,6 +671,7 @@
 				3D529CA72458517C00527485 /* WDL */,
 				3D144C5128C4F905003FA6F7 /* clap */,
 				3DC066E924599DCC00516437 /* VST2_SDK */,
+				3D25412629A397FE00CB37ED /* Resources */,
 				3D529C12245847D400527485 /* Frameworks */,
 				3DCA573124583673009F1E70 /* Products */,
 			);
@@ -844,6 +890,7 @@
 				3D144C7A28C4F93B003FA6F7 /* Headers */,
 				3D144C5428C4F93B003FA6F7 /* Sources */,
 				3D144C7728C4F93B003FA6F7 /* Frameworks */,
+				3D25413529A398DB00CB37ED /* Resources */,
 			);
 			buildRules = (
 			);
@@ -861,6 +908,7 @@
 				3D738531246E94E500582D74 /* Headers */,
 				3D43DA0C246E8C8D004AFF08 /* Sources */,
 				3D43DA0D246E8C8D004AFF08 /* Frameworks */,
+				3D25412E29A398B100CB37ED /* Resources */,
 				3D738598246E968C00582D74 /* Rez */,
 			);
 			buildRules = (
@@ -879,6 +927,7 @@
 				3DCA572E24583673009F1E70 /* Headers */,
 				3DCA572C24583673009F1E70 /* Sources */,
 				3DCA572D24583673009F1E70 /* Frameworks */,
+				3D25413C29A398EF00CB37ED /* Resources */,
 			);
 			buildRules = (
 			);
@@ -918,6 +967,48 @@
 		};
 /* End PBXProject section */
 
+/* Begin PBXResourcesBuildPhase section */
+		3D25412E29A398B100CB37ED /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				3D25412F29A398D200CB37ED /* Background.png in Resources */,
+				3D25413029A398D200CB37ED /* Switch.png in Resources */,
+				3D25413129A398D200CB37ED /* Knob.png in Resources */,
+				3D25413229A398D200CB37ED /* Background@2x.png in Resources */,
+				3D25413329A398D200CB37ED /* Switch@2x.png in Resources */,
+				3D25413429A398D200CB37ED /* Knob@2x.png in Resources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		3D25413529A398DB00CB37ED /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				3D25413629A398E600CB37ED /* Background.png in Resources */,
+				3D25413729A398E600CB37ED /* Switch.png in Resources */,
+				3D25413829A398E600CB37ED /* Knob.png in Resources */,
+				3D25413929A398E600CB37ED /* Background@2x.png in Resources */,
+				3D25413A29A398E600CB37ED /* Switch@2x.png in Resources */,
+				3D25413B29A398E600CB37ED /* Knob@2x.png in Resources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		3D25413C29A398EF00CB37ED /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				3D25413D29A398F800CB37ED /* Background.png in Resources */,
+				3D25413E29A398F800CB37ED /* Switch.png in Resources */,
+				3D25413F29A398F800CB37ED /* Knob.png in Resources */,
+				3D25414029A398F800CB37ED /* Background@2x.png in Resources */,
+				3D25414129A398F800CB37ED /* Switch@2x.png in Resources */,
+				3D25414229A398F800CB37ED /* Knob@2x.png in Resources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXResourcesBuildPhase section */
+
 /* Begin PBXRezBuildPhase section */
 		3D738598246E968C00582D74 /* Rez */ = {
 			isa = PBXRezBuildPhase;
@@ -1062,7 +1153,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				GCC_PREPROCESSOR_DEFINITIONS = (
-					"IGRAPHICS_COCOA=$(PROJECT_NAME:identifier)_CLAP",
+					"IGRAPHICS_COCOA=$(PRODUCT_NAME:identifier)_CLAP",
 					"$(inherited)",
 				);
 				INFOPLIST_FILE = "$(SRCROOT)/CLAP-Info.plist";
@@ -1076,7 +1167,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				GCC_PREPROCESSOR_DEFINITIONS = (
-					"IGRAPHICS_COCOA=$(PROJECT_NAME:identifier)_CLAP",
+					"IGRAPHICS_COCOA=$(PRODUCT_NAME:identifier)_CLAP",
 					"$(inherited)",
 				);
 				INFOPLIST_FILE = "$(SRCROOT)/CLAP-Info.plist";
@@ -1091,7 +1182,7 @@
 			buildSettings = {
 				EXPORTED_SYMBOLS_FILE = "$(SRCROOT)/$(PROJECT).exp";
 				GCC_PREPROCESSOR_DEFINITIONS = (
-					"IGRAPHICS_COCOA=$(PROJECT_NAME:identifier)_AU",
+					"IGRAPHICS_COCOA=$(PRODUCT_NAME:identifier)_AU",
 					"$(inherited)",
 				);
 				GCC_SYMBOLS_PRIVATE_EXTERN = NO;
@@ -1111,7 +1202,7 @@
 			buildSettings = {
 				EXPORTED_SYMBOLS_FILE = "$(SRCROOT)/$(PROJECT).exp";
 				GCC_PREPROCESSOR_DEFINITIONS = (
-					"IGRAPHICS_COCOA=$(PROJECT_NAME:identifier)_AU",
+					"IGRAPHICS_COCOA=$(PRODUCT_NAME:identifier)_AU",
 					"$(inherited)",
 				);
 				GCC_SYMBOLS_PRIVATE_EXTERN = NO;
@@ -1211,7 +1302,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				GCC_PREPROCESSOR_DEFINITIONS = (
-					"IGRAPHICS_COCOA=$(PROJECT_NAME:identifier)_VST",
+					"IGRAPHICS_COCOA=$(PRODUCT_NAME:identifier)_VST",
 					"$(inherited)",
 				);
 				INFOPLIST_FILE = "$(SRCROOT)/VST2-Info.plist";
@@ -1225,7 +1316,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				GCC_PREPROCESSOR_DEFINITIONS = (
-					"IGRAPHICS_COCOA=$(PROJECT_NAME:identifier)_VST",
+					"IGRAPHICS_COCOA=$(PRODUCT_NAME:identifier)_VST",
 					"$(inherited)",
 				);
 				INFOPLIST_FILE = "$(SRCROOT)/VST2-Info.plist";

diff --git a/Makefile b/Makefile
@@ -70,10 +70,19 @@ all : clap
 "$(OUTDIR)/$(PROJECT)_VST2.obj" : "$(PROJECT).cpp" "$(PROJECT).h" resource.h IPlug/Containers.h IPlug/Hosts.h IPlug/IControl.h IPlug/IGraphics.h IPlug/IGraphicsWin.h IPlug/IParam.h IPlug/IPlug_include_in_plug_hdr.h IPlug/IPlug_include_in_plug_src.h IPlug/IPlugBase.h IPlug/IPlugStructs.h IPlug/IPlugVST2.h
 	$(CPP) $(CPPFLAGS) /D VST2_API /wd4244 /Fo$@ /Fa"$(OUTDIR)/_$(PROJECT)_VST2.asm" "$(PROJECT).cpp"
 
-"$(OUTDIR)/$(PROJECT)_CLAP.res" : "$(PROJECT).rc" resource.h
+RESOURCES = \
+img/Background.png \
+img/Switch.png \
+img/Knob.png \
+\
+img/Background@2x.png \
+img/Switch@2x.png \
+img/Knob@2x.png
+
+"$(OUTDIR)/$(PROJECT)_CLAP.res" : "$(PROJECT).rc" resource.h $(RESOURCES)
 	$(RC) $(RCFLAGS) /D CLAP_API /fo$@ "$(PROJECT).rc"
 
-"$(OUTDIR)/$(PROJECT)_VST2.res" : "$(PROJECT).rc" resource.h
+"$(OUTDIR)/$(PROJECT)_VST2.res" : "$(PROJECT).rc" resource.h $(RESOURCES)
 	$(RC) $(RCFLAGS) /D VST2_API /fo$@ "$(PROJECT).rc"
 
 IPLUG = \

diff --git a/img/Background.png b/img/Background.png
diff --git a/img/Background@2x.png b/img/Background@2x.png
diff --git a/img/Knob.png b/img/Knob.png
diff --git a/img/Knob@2x.png b/img/Knob@2x.png
diff --git a/img/Switch.png b/img/Switch.png
diff --git a/img/Switch@2x.png b/img/Switch@2x.png
diff --git a/resource.h b/resource.h
@@ -80,3 +80,26 @@
 
 // To-do: Set AudioComponents type in AU-Info.plist to aufx (audio effect),
 // aumu (instrument), or aumf (audio effect with MIDI input).
+
+// Unique IDs for each image resource, bit 0 is scale (0 = full, 1 = half).
+
+#define BACKGROUND_2X_PNG_ID 100
+#define SWITCH_2X_PNG_ID     102
+#define KNOB_2X_PNG_ID       104
+
+#define BACKGROUND_PNG_ID    101
+#define SWITCH_PNG_ID        103
+#define KNOB_PNG_ID          105
+
+// Image resource filenames (case-sensitive!).
+
+#define BACKGROUND_2X_PNG_FN "img/Background@2x.png"
+#define SWITCH_2X_PNG_FN     "img/Switch@2x.png"
+#define KNOB_2X_PNG_FN       "img/Knob@2x.png"
+
+#define BACKGROUND_PNG_FN    "img/Background.png"
+#define SWITCH_PNG_FN        "img/Switch.png"
+#define KNOB_PNG_FN          "img/Knob.png"
+
+// To-do: Set AudioComponents type in AU-Info.plist to aufx (audio effect),
+// aumu (instrument), or aumf (audio effect with MIDI input).