GUI: implement clear

src/engine/song.cpp

@@ -19,21 +19,57 @@
 
 #include "song.h"
 
+void DivSong::clearSongData() {
+  for (int i=0; i<DIV_MAX_CHANS; i++) {
+    pat[i].wipePatterns();
+  }
+
+  memset(orders.ord,0,DIV_MAX_CHANS*256);
+  ordersLen=1;
+}
+
+void DivSong::clearInstruments() {
+  for (DivInstrument* i: ins) {
+    delete i;
+  }
+  ins.clear();
+  insLen=0;
+}
+
+void DivSong::clearWavetables() {
+  for (DivWavetable* i: wave) {
+    delete i;
+  }
+  wave.clear();
+  waveLen=0;
+}
+
+void DivSong::clearSamples() {
+  for (DivSample* i: sample) {
+    delete i;
+  }
+  sample.clear();
+  sampleLen=0;
+}
+
 void DivSong::unload() {
   for (DivInstrument* i: ins) {
     delete i;
   }
   ins.clear();
+  insLen=0;
 
   for (DivWavetable* i: wave) {
     delete i;
   }
   wave.clear();
+  waveLen=0;
 
   for (DivSample* i: sample) {
     delete i;
   }
   sample.clear();
+  sampleLen=0;
 
   for (int i=0; i<DIV_MAX_CHANS; i++) {
     pat[i].wipePatterns();

src/engine/song.h

@@ -339,6 +339,27 @@ struct DivSong {
   DivWavetable nullWave;
   DivSample nullSample;
 
+  /**
+   * clear orders and patterns.
+   */
+  void clearSongData();
+
+  /**
+   * clear instruments.
+   */
+  void clearInstruments();
+
+  /**
+   * clear wavetables.
+   */
+  void clearWavetables();
+
+  /**
+   * clear samples.
+   */
+  void clearSamples();
+
+
   /**
    * unloads the song, freeing all memory associated with it.
    * use before destroying the object.

src/gui/gui.cpp

@@ -3374,26 +3374,64 @@ bool FurnaceGUI::loop() {
           break;
         case GUI_WARN_CLEAR:
           if (ImGui::Button("Song (orders and patterns)")) {
+            stop();
+            e->lockEngine([this]() {
+              e->song.clearSongData();
+            });
+            e->setOrder(0);
+            curOrder=0;
+            oldOrder=0;
+            oldOrder1=0;
+            MARK_MODIFIED;
             ImGui::CloseCurrentPopup();
           }
           ImGui::SameLine();
           if (ImGui::Button("Pattern")) {
+            stop();
+            e->lockEngine([this]() {
+              for (int i=0; i<e->getTotalChannelCount(); i++) {
+                DivPattern* pat=e->song.pat[i].getPattern(e->song.orders.ord[i][curOrder],true);
+                memset(pat->data,-1,256*32*sizeof(short));
+                for (int j=0; j<256; j++) {
+                  pat->data[j][0]=0;
+                  pat->data[j][1]=0;
+                }
+              }
+            });
+            MARK_MODIFIED;
             ImGui::CloseCurrentPopup();
           }
           ImGui::SameLine();
           if (ImGui::Button("Instruments")) {
+            stop();
+            e->lockEngine([this]() {
+              e->song.clearInstruments();
+            });
+            curIns=-1;
+            MARK_MODIFIED;
             ImGui::CloseCurrentPopup();
           }
           ImGui::SameLine();
           if (ImGui::Button("Wavetables")) {
+            stop();
+            e->lockEngine([this]() {
+              e->song.clearWavetables();
+            });
+            curWave=0;
+            MARK_MODIFIED;
             ImGui::CloseCurrentPopup();
           }
           ImGui::SameLine();
           if (ImGui::Button("Samples")) {
+            stop();
+            e->lockEngine([this]() {
+              e->song.clearSamples();
+            });
+            curSample=0;
             ImGui::CloseCurrentPopup();
           }
 
-          if (ImGui::Button("Wait! What am I doing?")) {
+          if (ImGui::Button("Wait! What am I doing? Cancel!")) {
             ImGui::CloseCurrentPopup();
           }
           break;