VST state save/restore

VST/VSTBackend.cpp

@@ -138,6 +138,7 @@ VSTBackend::VSTBackend(audioMasterCallback cb)
     setNumOutputs(2);
     setEditor(&m_editor);
     sizeWindow(600, 420);
+    programsAreChunks();
 
     m_booBackend = std::make_unique<VSTVoiceEngine>();
     m_voxAlloc.emplace(*m_booBackend);
@@ -323,6 +324,58 @@ void VSTBackend::setDrumProgram(int programNo)
     m_curSeq->setChanProgram(9, programNo);
 }
 
+VstInt32 VSTBackend::getChunk(void** data, bool)
+{
+    size_t allocSz = 14;
+    if (m_curData)
+        allocSz += (m_curData->m_path.size() - m_userDir.size() - 1) * 2;
+
+    uint8_t* buf = new uint8_t[allocSz];
+    if (m_curData)
+        memmove(buf, m_curData->m_path.data() + m_userDir.size() + 1, allocSz - 12);
+    else
+        *reinterpret_cast<wchar_t*>(buf) = L'\0';
+    uint32_t* intVals = reinterpret_cast<uint32_t*>(buf + allocSz - 12);
+    intVals[0] = m_listenProg;
+    intVals[1] = m_editor.m_selGroupIdx;
+    intVals[2] = m_editor.m_selPageIdx;
+    *data = buf;
+    return allocSz;
+}
+
+VstInt32 VSTBackend::setChunk(void* data, VstInt32 byteSize, bool)
+{
+    if (byteSize < 14)
+        return 0;
+
+    wchar_t* path = reinterpret_cast<wchar_t*>(data);
+    uint32_t* intVals = reinterpret_cast<uint32_t*>(path + wcslen(path) + 1);
+    std::wstring targetPath = m_userDir + L'\\' + path;
+    m_listenProg = intVals[0];
+    uint32_t groupIdx = intVals[1];
+    uint32_t pageIdx = intVals[2];
+
+    size_t colIdx = 0;
+    for (auto& collection : m_filePresenter.m_audioGroupCollections)
+    {
+        size_t fileIdx = 0;
+        for (auto& file : collection.second->m_groups)
+        {
+            if (!file.second->m_path.compare(targetPath))
+            {
+                m_editor.selectCollection(LPARAM(0x80000000 | (colIdx << 16) | fileIdx));
+                m_editor.selectGroup(groupIdx);
+                m_editor.selectPage(pageIdx);
+                m_editor._reselectColumns();
+            }
+            ++fileIdx;
+        }
+        ++colIdx;
+    }
+
+    return 1;
+}
+
 }
 
 AudioEffect* createEffectInstance(audioMasterCallback audioMaster)

VST/VSTBackend.hpp

@@ -35,6 +35,7 @@ class VSTBackend : public AudioEffectX
     const AudioGroupDataCollection* m_curData = nullptr;
     size_t m_curFrame = 0;
     std::wstring m_userDir;
+    int m_listenProg = 0;
     AudioGroupFilePresenter m_filePresenter;
     VSTEditor m_editor;
 public:
@@ -61,6 +62,9 @@ public:
     void loadGroupSequencer(int collectionIdx, int fileIdx, int groupIdx);
     void setNormalProgram(int programNo);
     void setDrumProgram(int programNo);
+
+    VstInt32 getChunk(void** data, bool isPreset);
+    VstInt32 setChunk(void* data, VstInt32 byteSize, bool isPreset);
 };
 
 }

VST/VSTEditor.cpp

@@ -4,6 +4,7 @@
 #include <Windowsx.h>
 #include <shellapi.h>
 #include <algorithm>
+#include <Shlwapi.h>
 
 #undef min
 #undef max
@@ -47,12 +48,7 @@ LRESULT CALLBACK VSTEditor::WindowProc(HWND hwnd,
             if (itemAct.hdr.hwndFrom == editor.m_groupListView)
                 editor.selectGroup(itemAct.iItem);
             else if (itemAct.hdr.hwndFrom == editor.m_pageListView)
-            {
+                editor.selectPage(itemAct.iItem);
-                if (itemAct.lParam & 0x80000000)
-                    editor.selectDrumPage(itemAct.lParam & 0x7fffffff);
-                else
-                    editor.selectNormalPage(itemAct.lParam & 0x7fffffff);
-            }
             return 0;
         }
         case TVN_SELCHANGED:
@@ -201,7 +197,7 @@ bool VSTEditor::open(void* ptr)
     treeItem.item.pszText = L"Root A";
 
     LVCOLUMN column = {};
-    column.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH | LVCF_SUBITEM;
+    column.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
     column.fmt = LVCFMT_LEFT | LVCFMT_FIXED_WIDTH;
     column.cx = 199;
 
@@ -250,7 +246,7 @@ bool VSTEditor::open(void* ptr)
     m_collectionAdd = CreateWindowW(WC_BUTTON,
                                     L"+",
                                     WS_CHILD | WS_CLIPSIBLINGS | BS_PUSHBUTTON,
-                                    1, m_windowRect.bottom - m_windowRect.top - 26,
+                                    1, m_windowRect.bottom - m_windowRect.top - 25,
                                     25, 24,
                                     m_rootView,
                                     nullptr,
@@ -258,12 +254,12 @@ bool VSTEditor::open(void* ptr)
                                     nullptr);
     SetWindowFont(m_collectionAdd, GetStockObject(ANSI_FIXED_FONT), FALSE);
     Button_Enable(m_collectionAdd, TRUE);
-    SetWindowPos(m_collectionAdd, HWND_TOP, 1, m_windowRect.bottom - m_windowRect.top - 26, 25, 24, SWP_SHOWWINDOW);
+    SetWindowPos(m_collectionAdd, HWND_TOP, 1, m_windowRect.bottom - m_windowRect.top - 25, 25, 24, SWP_SHOWWINDOW);
 
     m_collectionRemove = CreateWindowW(WC_BUTTON,
                                        L"-",
                                        WS_CHILD | WS_CLIPSIBLINGS | BS_PUSHBUTTON,
-                                       26, m_windowRect.bottom - m_windowRect.top - 26,
+                                       26, m_windowRect.bottom - m_windowRect.top - 25,
                                        25, 24,
                                        m_rootView,
                                        nullptr,
@@ -271,7 +267,7 @@ bool VSTEditor::open(void* ptr)
                                        nullptr);
     SetWindowFont(m_collectionRemove, GetStockObject(ANSI_FIXED_FONT), FALSE);
     Button_Enable(m_collectionRemove, FALSE);
-    SetWindowPos(m_collectionRemove, HWND_TOP, 26, m_windowRect.bottom - m_windowRect.top - 26, 25, 24, SWP_SHOWWINDOW);
+    SetWindowPos(m_collectionRemove, HWND_TOP, 26, m_windowRect.bottom - m_windowRect.top - 25, 25, 24, SWP_SHOWWINDOW);
 
 
     m_groupListView = CreateWindowW(WC_LISTVIEW,
@@ -305,7 +301,7 @@ bool VSTEditor::open(void* ptr)
                                    nullptr,
                                    nullptr);
     column.pszText = L"Page";
-    column.cx = 198;
+    column.cx = 198 - GetSystemMetrics(SM_CXVSCROLL);
     header = ListView_GetHeader(m_pageListView);
     SetWindowLongPtrW(header, GWLP_USERDATA, LONG_PTR(column.pszText));
     SetWindowLongPtr(header, GWLP_WNDPROC, LONG_PTR(ColHeaderWindowProc));
@@ -315,10 +311,7 @@ bool VSTEditor::open(void* ptr)
     ListView_InsertColumn(m_pageListView, 0, &column);
     ShowWindow(m_pageListView, SW_SHOW);
 
-    m_backend.getFilePresenter().populateCollectionColumn(*this);
+    update();
-    m_backend.getFilePresenter().populateGroupColumn(*this, m_selCollectionIdx, m_selFileIdx);
-    m_backend.getFilePresenter().populatePageColumn(*this, m_selCollectionIdx, m_selFileIdx, m_selGroupIdx);
-    _reselectColumns();
     return true;
 }
 
@@ -330,7 +323,12 @@ void VSTEditor::close()
 
 void VSTEditor::update()
 {
-
+    m_backend.getFilePresenter().populateCollectionColumn(*this);
+    m_backend.getFilePresenter().populateGroupColumn(*this, m_selCollectionIdx, m_selFileIdx);
+    m_backend.loadGroupSequencer(m_selCollectionIdx, m_selFileIdx, m_selGroupIdx);
+    m_backend.getFilePresenter().populatePageColumn(*this, m_selCollectionIdx, m_selFileIdx, m_selGroupIdx);
+    selectPage(m_selPageIdx);
+    _reselectColumns();
 }
 
 void VSTEditor::addAction()
@@ -414,6 +412,19 @@ void VSTEditor::selectGroup(int idx)
     m_backend.getFilePresenter().populatePageColumn(*this, m_selCollectionIdx, m_selFileIdx, m_selGroupIdx);
 }
 
+void VSTEditor::selectPage(int idx)
+{
+    m_selPageIdx = idx;
+    LV_ITEM item = {};
+    item.mask = LVIF_PARAM;
+    item.iItem = idx;
+    ListView_GetItem(m_pageListView, &item);
+    if (item.lParam & 0x80000000)
+        selectDrumPage(item.lParam & 0x7fffffff);
+    else
+        selectNormalPage(item.lParam & 0x7fffffff);
+}
+
 void VSTEditor::selectNormalPage(int idx)
 {
     m_backend.setNormalProgram(idx);

VST/VSTEditor.hpp

@@ -14,19 +14,20 @@ class VSTBackend;
 /** Editor UI class */
 class VSTEditor : public AEffEditor
 {
+    friend class VSTBackend;
     friend class AudioGroupFilePresenter;
     friend struct AudioGroupCollection;
 
     VSTBackend& m_backend;
     ERect m_windowRect = {0, 0, 420, 600};
 
-    HWND m_rootView;
+    HWND m_rootView = 0;
-    HWND m_collectionHeader;
+    HWND m_collectionHeader = 0;
-    HWND m_collectionTree;
+    HWND m_collectionTree = 0;
-    HWND m_collectionAdd;
+    HWND m_collectionAdd = 0;
-    HWND m_collectionRemove;
+    HWND m_collectionRemove = 0;
-    HWND m_groupListView;
+    HWND m_groupListView = 0;
-    HWND m_pageListView;
+    HWND m_pageListView = 0;
 
     int m_selCollectionIdx = -1;
     int m_selFileIdx = -1;
@@ -62,6 +63,7 @@ public:
 
     void selectCollection(LPARAM idx);
     void selectGroup(int idx);
+    void selectPage(int idx);
     void selectNormalPage(int idx);
     void selectDrumPage(int idx);
 };