Fix patch browser keyboard navigation to cover directory rows

Arrow keys now navigate the full virtual row list (../, subdirs, patches)
rather than only patch rows. Landing on a patch auto-loads it as before;
landing on .. or a subdir highlights it and Enter confirms navigation.
Added patchVCursor to UIState to track keyboard focus independently of
the loaded patch. Mouse-click on a patch now also syncs the cursor so
subsequent arrow-key movement starts from the right position.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Readme.md

@@ -1,16 +0,0 @@
-# soundThing
-
-    A basic demonstration of generating sound samples and feeding an audio buffer, along with opening a MIDI port with ALSA, and playing back tones from the sound generator using MIDI events.
-
-## Building:
-
-    Depends on Raylib and probably libasound2-dev, so install those if you don't have them already.
-    
-    1) Clone the repository.
-    2) run make from inside the repository directory.
-    
-### Running and use:
-
-    1) Run make run from inside the repository directory.
-    2) Specify the client and port for the MIDI device you want to use to control soundThing.
-    3) You should now be able to play back notes by sending soundThing MIDI data. Use the up and down arrows to change waveforms.

include/ui.h

@@ -72,6 +72,7 @@ typedef struct {
     char patchCurrentDir[256];
     char patchSubDirs[PATCH_MAX_DIRS][PATCH_NAME_LEN];
     int  patchSubDirCount;
+    int  patchVCursor;
 
     // Control registry — built lazily by uiKnob/uiSlider for CC mapping persistence
     UIControlEntry controlRegistry[128];

patches/Keys/Vibraphone.json

@@ -1,50 +0,0 @@
-{
-  "osc0_waveform": 0,
-  "osc0_dutyCycle": 0.500000,
-  "osc0_detune": 0.000000,
-  "osc0_gain": 4.000000,
-  "osc0_active": 1,
-  "osc0_octave": 0,
-  "osc0_modRouting0": 0,
-  "osc0_modRouting1": 3,
-  "osc0_modRouting2": 0,
-  "osc0_modDepth0": 0.000000,
-  "osc0_modDepth1": 10.000000,
-  "osc0_modDepth2": 0.000000,
-  "osc1_waveform": 0,
-  "osc1_dutyCycle": 0.500000,
-  "osc1_detune": 2.000000,
-  "osc1_gain": 0.300000,
-  "osc1_active": 1,
-  "osc1_octave": 1,
-  "osc1_modRouting0": 0,
-  "osc1_modRouting1": 0,
-  "osc1_modRouting2": 2,
-  "osc1_modDepth0": 0.000000,
-  "osc1_modDepth1": 0.000000,
-  "osc1_modDepth2": 1.500000,
-  "ampEnv_attack": 0.001000,
-  "ampEnv_decay": 2.000000,
-  "ampEnv_sustain": 0.000000,
-  "ampEnv_release": 0.600000,
-  "modEnv_attack": 0.001000,
-  "modEnv_decay": 0.080000,
-  "modEnv_sustain": 0.000000,
-  "modEnv_release": 0.040000,
-  "lfo0_rate": 4.500000,
-  "lfo0_waveform": 0,
-  "lfo0_active": 1,
-  "lfo1_rate": 1.000000,
-  "lfo1_waveform": 0,
-  "lfo1_active": 0,
-  "filter_cutoff": 10000.000000,
-  "filter_resonance": 0.100000,
-  "filter_type": 0,
-  "filter_active": 1,
-  "filter_modRouting": 0,
-  "filter_modDepth": 0.000000,
-  "filter_resModRouting": 0,
-  "filter_resModDepth": 0.000000,
-  "master_volume": 0.800000,
-  "master_pitchBendRange": 2.000000
-}

source/ui.c

@@ -137,6 +137,7 @@ void uiInit(UIState *ui, MidiState *midi, Camera2D *camera)
     ui->patchFavCount          = patchLoadFavs(ui->patchFavs, PATCH_MAX_FILES);
     ui->patchCurrentDir[0]     = '\0';
     ui->patchSubDirCount       = 0;
+    ui->patchVCursor           = -1;
     ui->controlRegistryCount   = 0;
     ui->pendingCount           = 0;
 }
@@ -827,6 +828,7 @@ static void patchRescan(UIState *ui)
         ui->patchFiles, PATCH_MAX_FILES,
         ui->patchSubDirs, PATCH_MAX_DIRS, &ui->patchSubDirCount);
     ui->patchScrollOffset = 0;
+    ui->patchVCursor      = -1;
 }
 
 void uiPatchMenu(UIState *ui, float x, float y, float width, Synth *s)
@@ -1042,32 +1044,69 @@ void uiPatchMenu(UIState *ui, float x, float y, float width, Synth *s)
         ui->patchScrollOffset -= (int)GetMouseWheelMove();
     }
 
-    // Arrow key navigation: move selection through patches only
+    // Arrow key navigation over all virtual rows: [..], subdirs, patches
     if (ui->focusedTextInput == -1 && !ui->patchConfirmOverwrite && !ui->patchConfirmClear
-        && filteredCount > 0) {
+        && totalVirtual > 0) {
-        int curFi = -1;
+        // Sync cursor from currently loaded patch if unset
-        for (int fi = 0; fi < filteredCount; fi++) {
+        if (ui->patchVCursor < 0 && ui->patchCurrentName[0]) {
-            if (strcmp(ui->patchFiles[filteredIdx[fi]], ui->patchCurrentName) == 0) {
+            for (int fi = 0; fi < filteredCount; fi++) {
-                curFi = fi;
+                if (strcmp(ui->patchFiles[filteredIdx[fi]], ui->patchCurrentName) == 0) {
-                break;
+                    ui->patchVCursor = fi + backRows + ui->patchSubDirCount;
+                    break;
+                }
             }
         }
-        int nextFi = curFi;
+        int next = ui->patchVCursor;
-        if (IsKeyPressed(KEY_DOWN) && curFi < filteredCount - 1) nextFi = curFi + 1;
+        if (IsKeyPressed(KEY_DOWN))
-        if (IsKeyPressed(KEY_UP)   && curFi > 0)                 nextFi = curFi - 1;
+            next = (next < 0) ? 0 : (next < totalVirtual - 1 ? next + 1 : next);
-        if (nextFi != curFi) {
+        if (IsKeyPressed(KEY_UP))
-            int i = filteredIdx[nextFi];
+            next = (next < 0) ? totalVirtual - 1 : (next > 0 ? next - 1 : next);
-            char path[512];
+        if (next != ui->patchVCursor) {
-            buildPatchPath(path, sizeof(path), ui->patchCurrentDir, ui->patchFiles[i]);
+            ui->patchVCursor = next;
-            if (patchLoad(s, path)) {
+            // Auto-load when landing on a patch row
-                snprintf(ui->patchCurrentName, PATCH_NAME_LEN, "%s", ui->patchFiles[i]);
+            if (next >= backRows + ui->patchSubDirCount && filteredCount > 0) {
-                snprintf(ui->patchSaveName,    PATCH_NAME_LEN, "%s", ui->patchFiles[i]);
+                int fi = next - backRows - ui->patchSubDirCount;
+                int i  = filteredIdx[fi];
+                char path[512];
+                buildPatchPath(path, sizeof(path), ui->patchCurrentDir, ui->patchFiles[i]);
+                if (patchLoad(s, path)) {
+                    snprintf(ui->patchCurrentName, PATCH_NAME_LEN, "%s", ui->patchFiles[i]);
+                    snprintf(ui->patchSaveName,    PATCH_NAME_LEN, "%s", ui->patchFiles[i]);
+                }
             }
-            int vRow = nextFi + backRows + ui->patchSubDirCount;
+        }
-            if (vRow < ui->patchScrollOffset)
+        // Enter activates navigation rows (.. and subdirs)
-                ui->patchScrollOffset = vRow;
+        if (IsKeyPressed(KEY_ENTER) && ui->patchVCursor >= 0) {
-            if (vRow >= ui->patchScrollOffset + MAX_VIS)
+            int vc = ui->patchVCursor;
-                ui->patchScrollOffset = vRow - MAX_VIS + 1;
+            if (!isRoot && vc == 0) {
+                char *lastSlash = strrchr(ui->patchCurrentDir, '/');
+                if (lastSlash) *lastSlash = '\0';
+                else           ui->patchCurrentDir[0] = '\0';
+                ui->patchCurrentName[0] = '\0';
+                patchRescan(ui);
+                return;
+            } else if (vc >= backRows && vc < backRows + ui->patchSubDirCount) {
+                int d = vc - backRows;
+                if (ui->patchCurrentDir[0]) {
+                    size_t curLen = strlen(ui->patchCurrentDir);
+                    snprintf(ui->patchCurrentDir + curLen,
+                             sizeof(ui->patchCurrentDir) - curLen,
+                             "/%s", ui->patchSubDirs[d]);
+                } else {
+                    snprintf(ui->patchCurrentDir, sizeof(ui->patchCurrentDir),
+                             "%s", ui->patchSubDirs[d]);
+                }
+                ui->patchCurrentName[0] = '\0';
+                patchRescan(ui);
+                return;
+            }
+        }
+        // Scroll to keep cursor visible
+        if (ui->patchVCursor >= 0) {
+            if (ui->patchVCursor < ui->patchScrollOffset)
+                ui->patchScrollOffset = ui->patchVCursor;
+            if (ui->patchVCursor >= ui->patchScrollOffset + MAX_VIS)
+                ui->patchScrollOffset = ui->patchVCursor - MAX_VIS + 1;
         }
     }
 
@@ -1099,10 +1138,10 @@ void uiPatchMenu(UIState *ui, float x, float y, float width, Synth *s)
 
         if (!isRoot && r == 0) {
             // ".." — navigate to parent
-            DrawRectangle((int)(x + padding), (int)contentY, (int)btnW, (int)(rowH - 2),
+            Color dotBg   = (ui->patchVCursor == r) ? (Color){40, 60, 100, 255} : (Color){20, 30, 50, 255};
-                          (Color){20, 30, 50, 255});
+            Color dotEdge = (ui->patchVCursor == r) ? SKYBLUE : (Color){80, 120, 180, 255};
-            DrawRectangleLines((int)(x + padding), (int)contentY, (int)btnW, (int)(rowH - 2),
+            DrawRectangle((int)(x + padding), (int)contentY, (int)btnW, (int)(rowH - 2), dotBg);
-                               (Color){80, 120, 180, 255});
+            DrawRectangleLines((int)(x + padding), (int)contentY, (int)btnW, (int)(rowH - 2), dotEdge);
             DRAW_TEXT("..", (int)(x + padding + 4), (int)(contentY + 2), fontSize, SKYBLUE);
             if (!ui->patchConfirmClear && IsMouseButtonPressed(MOUSE_LEFT_BUTTON) &&
                 mouse.x >= x + padding && mouse.x <= x + padding + btnW &&
@@ -1119,10 +1158,10 @@ void uiPatchMenu(UIState *ui, float x, float y, float width, Synth *s)
             int d = r - backRows;
             char label[PATCH_NAME_LEN + 4];
             snprintf(label, sizeof(label), "> %s", ui->patchSubDirs[d]);
-            DrawRectangle((int)(x + padding), (int)contentY, (int)btnW, (int)(rowH - 2),
+            Color dirBg   = (ui->patchVCursor == r) ? (Color){40, 60, 100, 255} : (Color){20, 30, 50, 255};
-                          (Color){20, 30, 50, 255});
+            Color dirEdge = (ui->patchVCursor == r) ? SKYBLUE : (Color){80, 120, 180, 255};
-            DrawRectangleLines((int)(x + padding), (int)contentY, (int)btnW, (int)(rowH - 2),
+            DrawRectangle((int)(x + padding), (int)contentY, (int)btnW, (int)(rowH - 2), dirBg);
-                               (Color){80, 120, 180, 255});
+            DrawRectangleLines((int)(x + padding), (int)contentY, (int)btnW, (int)(rowH - 2), dirEdge);
             DRAW_TEXT(label, (int)(x + padding + 4), (int)(contentY + 2), fontSize, SKYBLUE);
             if (!ui->patchConfirmClear && IsMouseButtonPressed(MOUSE_LEFT_BUTTON) &&
                 mouse.x >= x + padding && mouse.x <= x + padding + btnW &&
@@ -1190,6 +1229,7 @@ void uiPatchMenu(UIState *ui, float x, float y, float width, Synth *s)
                     if (patchLoad(s, path)) {
                         snprintf(ui->patchCurrentName, PATCH_NAME_LEN, "%s", ui->patchFiles[i]);
                         snprintf(ui->patchSaveName,    PATCH_NAME_LEN, "%s", ui->patchFiles[i]);
+                        ui->patchVCursor = r;
                     }
                 }
             }