Loop bounds are now copied over to fresh buffers

This is fixes a minor inconvenience where new buffers didn't have their
loop start and loop length set.

Changelog: fix

daisyy-looper/looper.h

@@ -170,6 +170,7 @@ class Looper {
     float grain_spread = 2.0f;
     float grain_variation = 0.0f;
     float volume = 1.0f;
+    bool fresh = true;
     RecPitchMode rec_pitch_mode = REC_PITCH_MODE_NORMAL;
     RecStartMode rec_start_mode = REC_START_MODE_BUFFER;
     PlaybackState playback_state = PLAYBACK_STATE_LOOP;

daisyy-looper/ui.h

@@ -336,26 +336,46 @@ class Ui {
         button_1.onPress([this, n](){ 
           previous_buffer = active_buffer;
           active_buffer = ACTIVE_BUFFER_A;
+          if (this->activeLooper()->fresh) {
+            this->activeLooper()->fresh = false;
+            this->activeLooper()->SetLoop(this->previousLooper()->loop_start_f, this->previousLooper()->loop_length_f);
+          }
           waveform_cache_dirty = true;
         });
         button_2.onPress([this, n](){ 
           previous_buffer = active_buffer;
           active_buffer = ACTIVE_BUFFER_B;
+          if (this->activeLooper()->fresh) {
+            this->activeLooper()->fresh = false;
+            this->activeLooper()->SetLoop(this->previousLooper()->loop_start_f, this->previousLooper()->loop_length_f);
+          }
           waveform_cache_dirty = true;
         });
         button_3.onPress([this, n](){ 
           previous_buffer = active_buffer;
           active_buffer = ACTIVE_BUFFER_C;
+          if (this->activeLooper()->fresh) {
+            this->activeLooper()->fresh = false;
+            this->activeLooper()->SetLoop(this->previousLooper()->loop_start_f, this->previousLooper()->loop_length_f);
+          }
           waveform_cache_dirty = true;
         });
         button_4.onPress([this, n](){ 
           previous_buffer = active_buffer;
           active_buffer = ACTIVE_BUFFER_D;
+          if (this->activeLooper()->fresh) {
+            this->activeLooper()->fresh = false;
+            this->activeLooper()->SetLoop(this->previousLooper()->loop_start_f, this->previousLooper()->loop_length_f);
+          }
           waveform_cache_dirty = true;
         });
         button_5.onPress([this, n](){ 
           previous_buffer = active_buffer;
           active_buffer = ACTIVE_BUFFER_E;
+          if (this->activeLooper()->fresh) {
+            this->activeLooper()->fresh = false;
+            this->activeLooper()->SetLoop(this->previousLooper()->loop_start_f, this->previousLooper()->loop_length_f);
+          }
           waveform_cache_dirty = true;
         });