Molot GUI has become open-source!

I loose trying to make VSTGUI work with this damn written by left leg(*) wrapper. I decided to rewrite Molot GUI without using VSTGUI library.

I don’t want for another developers to step on the same pitchfork(**) I did. But I soon I don’t need old Molot GUI more I decided to make it open for developers as example of real GUI for VST plugin. I think it can be helpful and educational.

[Molot VST compressor GUI source code]

(*) “written by left leg” – I suppose in english it’s something like “did it sitting on the pants”

(**) “step on the same pitchfork” – Step on it and it hits your face. Do it twice actually. I think in english it’s something like “step into can of worms”

Technical details from readme.txt file

ABSTRACT

This is source code of GUI of 0.2.168 version of “Molot” VST compressor
plugin coded with VSTGUI. Windows (32 and 64 bits) and MacOS X (32 bits)
versions are supported.

Molot sound processing source code replaced with stub.

FUNCTIONALITY RESTRICTIONS

This code doesn’t work with FXpansion AU and RTAS wrappers on Mac!

USAGE RESTRICTIONS
Source code of Molot GUI can be used without any restrictions in both free
and commercial projects.

Visual elements (png-files) of Molot GUI must not be used in public
available free and commercial projects.

Libraries libpng, zlib, VSTSDK and VSTGUI included in this package have
their own usage restrictions based on their licenses.

PACKAGE CONTENTS

libpng     – http://www.libpng.org/pub/png/libpng.html
molot01    – Molot VST compressor GUI source code and visual elements
vstsdk2.4  – Steinberg VST SDK with modifications
vstsdk2.4\vstgui_350   – VSTGUI library 3.50 (used in Mac version)
vstsdk2.4\vstgui.sf    – VSTGUI library 3.0 with modifications (used in Windows version)
zlib       – http://zlib.net/

HOW TO BUILD WINDOWS VERSION
Visual Studio 2005 was used to build Windows version:

1. Open solution molot01\molotgui.sln
2. Build solution in Win32, x64, Debug or Release configurations.

HOW TO BUILD MAC OS X VERSION
Xcode was not used to build Mac OS X version:

1. Open Terminal
2. Change directory to molot01/vst-osx
3. Enter “make” command to build
4. Start “makedmg.sh” script to prepare .dmg file

MODIFICATIONS MADE IN VST SDK

diff -r 612a21095dca -r 42f2abc6165e vstsdk2.4/public.sdk/source/vst2.x/vstplugmain.cpp
--- a/vstsdk2.4/public.sdk/source/vst2.x/vstplugmain.cpp Wed Sep 08 19:10:34 2010 +0000
+++ b/vstsdk2.4/public.sdk/source/vst2.x/vstplugmain.cpp Thu Jun 23 22:42:05 2011 +0400
@@ -42,7 +42,7 @@
}

// support for old hosts not looking for VSTPluginMain
-#if (TARGET_API_MAC_CARBON && __ppc__)
+#if (TARGET_API_MAC_CARBON /*&& __ppc__*/)
VST_EXPORT AEffect* main_macho (audioMasterCallback audioMaster) { return VSTPluginMain (audioMaster); }
#elif WIN32
VST_EXPORT AEffect* MAIN (audioMasterCallback audioMaster) { return VSTPluginMain (audioMaster); }
diff -r 612a21095dca -r 42f2abc6165e vstsdk2.4/vstgui.sf/vstgui/vstgui.cpp
--- a/vstsdk2.4/vstgui.sf/vstgui/vstgui.cpp Wed Sep 08 19:10:34 2010 +0000
+++ b/vstsdk2.4/vstgui.sf/vstgui/vstgui.cpp Thu Jun 23 22:42:05 2011 +0400
@@ -2220,7 +2220,7 @@
logfont.lfClipPrecision = CLIP_STROKE_PRECIS;
logfont.lfOutPrecision = OUT_STRING_PRECIS;
logfont.lfQuality = DEFAULT_QUALITY;
- logfont.lfCharSet = ANSI_CHARSET;
+ logfont.lfCharSet = DEFAULT_CHARSET; // was ANSI_CHARSET

HANDLE newFont = CreateFontIndirect (&logfont);
SelectObject ((HDC)pSystemContext, newFont);
@@ -4064,6 +4064,8 @@
backBuffer = 0;
OleInitialize (0);

+ InitializeCriticalSection(&m_guard);
+
#if DYNAMICALPHABLEND
pfnAlphaBlend = 0;
pfnTransparentBlt = 0;
@@ -4146,6 +4148,8 @@
backBuffer = 0;
OleInitialize (0);

+ InitializeCriticalSection(&m_guard);
+
#if DYNAMICALPHABLEND
pfnAlphaBlend = 0;
pfnTransparentBlt = 0;
@@ -4215,6 +4219,8 @@
#if WINDOWS
OleUninitialize ();

+ DeleteCriticalSection(&m_guard);
+
if (backBuffer)
backBuffer->forget ();

@@ -4268,6 +4274,23 @@
#endif
}

+CFrame::CGuard::CGuard(CFrame *frame)
+{
+ m_frame = frame;
+#if WINDOWS
+ if (frame != NULL)
+ EnterCriticalSection(&frame->m_guard);
+#endif
+}
+
+CFrame::CGuard::~CGuard()
+{
+#if WINDOWS
+ if (m_frame != NULL)
+ LeaveCriticalSection(&m_frame->m_guard);
+#endif
+}
+
//-----------------------------------------------------------------------------
bool CFrame::open (CPoint *point)
{
@@ -6962,7 +6985,7 @@
if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
png_set_gray_to_rgb (png_ptr);
if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
- png_set_gray_1_2_4_to_8 (png_ptr);
+ png_set_expand_gray_1_2_4_to_8 (png_ptr);
if (png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS))
png_set_tRNS_to_alpha (png_ptr);
else
@@ -6972,7 +6995,9 @@
png_set_swap (png_ptr);
png_set_strip_16 (png_ptr);
}
+#if 0
if (color_type == PNG_COLOR_TYPE_RGB || color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+#endif
png_set_bgr (png_ptr);
png_read_update_info (png_ptr, info_ptr);

@@ -8367,9 +8392,28 @@
{
USING_NAMESPACE_VSTGUI
CFrame* pFrame = (CFrame*)GetWindowLongPtr (hwnd, GWLP_USERDATA);
+
+ CFrame::CGuard guard(pFrame); // avoid race conditions with idle()

switch (message)
{
+ case WM_NCHITTEST:
+ {
+ HWND wnd_focus, wnd_parent;
+
+ wnd_focus = GetFocus();
+ if (wnd_focus != NULL && wnd_focus != hwnd) {
+ for (wnd_parent = GetParent(hwnd); wnd_parent != NULL; wnd_parent = GetParent(wnd_parent)) {
+ if (wnd_focus == wnd_parent) {
+ // a hack to get focus from parent & to get mousewheel messages
+ SetFocus(hwnd);
+ break;
+ }
+ }
+ }
+
+ break;
+ }
case WM_MOUSEWHEEL:
{
if (pFrame)
@@ -8377,6 +8421,10 @@
VSTGUI_CDrawContext context (pFrame, 0, hwnd);
VSTGUI_CPoint where (LOWORD (lParam), HIWORD (lParam));
short zDelta = (short) HIWORD(wParam);
+
+ // "where" is screen-relative
+ where.offset(-context.offsetScreen.h, -context.offsetScreen.v);
+
pFrame->onWheel (&context, where, (float)zDelta / WHEEL_DELTA);
}
break;
diff -r 612a21095dca -r 42f2abc6165e vstsdk2.4/vstgui.sf/vstgui/vstgui.h
--- a/vstsdk2.4/vstgui.sf/vstgui/vstgui.h Wed Sep 08 19:10:34 2010 +0000
+++ b/vstsdk2.4/vstgui.sf/vstgui/vstgui.h Thu Jun 23 22:42:05 2011 +0400
@@ -1111,6 +1111,14 @@
virtual void dumpHierarchy ();
#endif

+ class CGuard {
+ public:
+ CGuard(CFrame *frame);
+ ~CGuard();
+ private:
+ CFrame *m_frame;
+ };
+
CLASS_METHODS(CFrame, CViewContainer)

//-------------------------------------------
@@ -1134,6 +1142,8 @@
void* dropTarget;
COffscreenContext* backBuffer;

+ CRITICAL_SECTION m_guard;
+
#elif MOTIF
Colormap colormap;
Display *pDisplay;