- port to minGw

git-svn-id: http://moon:8086/svn/software/trunk/projects/JaySynth@235 b431acfa-c32f-4a4a-93f1-934dc6c82436
2015-02-21 17:09:43 +00:00
parent 843c6e300c
commit cfc9645b0b
1093 changed files with 426078 additions and 143 deletions
@@ -0,0 +1,137 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2013 - Raw Material Software Ltd.
+
+   Permission is granted to use this software under the terms of either:
+   a) the GPL v2 (or any later version)
+   b) the Affero GPL v3
+
+   Details of these licenses can be found at: www.gnu.org/licenses
+
+   JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+   ------------------------------------------------------------------------------
+
+   To release a closed-source product which uses JUCE, commercial licenses are
+   available: visit www.juce.com for more information.
+
+  ==============================================================================
+*/
+
+#ifndef JUCE_WIN32_HIDDENMESSAGEWINDOW_H_INCLUDED
+#define JUCE_WIN32_HIDDENMESSAGEWINDOW_H_INCLUDED
+
+//==============================================================================
+class HiddenMessageWindow
+{
+public:
+    HiddenMessageWindow (const TCHAR* const messageWindowName, WNDPROC wndProc)
+    {
+        String className ("JUCE_");
+        className << String::toHexString (Time::getHighResolutionTicks());
+
+        HMODULE moduleHandle = (HMODULE) Process::getCurrentModuleInstanceHandle();
+
+        WNDCLASSEX wc = { 0 };
+        wc.cbSize         = sizeof (wc);
+        wc.lpfnWndProc    = wndProc;
+        wc.cbWndExtra     = 4;
+        wc.hInstance      = moduleHandle;
+        wc.lpszClassName  = className.toWideCharPointer();
+
+        atom = RegisterClassEx (&wc);
+        jassert (atom != 0);
+
+        hwnd = CreateWindow (getClassNameFromAtom(), messageWindowName,
+                             0, 0, 0, 0, 0, 0, 0, moduleHandle, 0);
+        jassert (hwnd != 0);
+    }
+
+    ~HiddenMessageWindow()
+    {
+        DestroyWindow (hwnd);
+        UnregisterClass (getClassNameFromAtom(), 0);
+    }
+
+    inline HWND getHWND() const noexcept     { return hwnd; }
+
+private:
+    ATOM atom;
+    HWND hwnd;
+
+    LPCTSTR getClassNameFromAtom() noexcept  { return (LPCTSTR) MAKELONG (atom, 0); }
+};
+
+//==============================================================================
+class JuceWindowIdentifier
+{
+public:
+    static bool isJUCEWindow (HWND hwnd) noexcept
+    {
+        return GetWindowLongPtr (hwnd, GWLP_USERDATA) == getImprobableWindowNumber();
+    }
+
+    static void setAsJUCEWindow (HWND hwnd, bool isJuceWindow) noexcept
+    {
+        SetWindowLongPtr (hwnd, GWLP_USERDATA, isJuceWindow ? getImprobableWindowNumber() : 0);
+    }
+
+private:
+    static LONG_PTR getImprobableWindowNumber() noexcept
+    {
+        static LONG_PTR number = (LONG_PTR) Random::getSystemRandom().nextInt64();
+        return number;
+    }
+};
+
+//==============================================================================
+class DeviceChangeDetector  : private Timer
+{
+public:
+    DeviceChangeDetector (const wchar_t* const name)
+        : messageWindow (name, (WNDPROC) deviceChangeEventCallback)
+    {
+        SetWindowLongPtr (messageWindow.getHWND(), GWLP_USERDATA, (LONG_PTR) this);
+    }
+
+    virtual ~DeviceChangeDetector() {}
+
+    virtual void systemDeviceChanged() = 0;
+
+    void triggerAsyncDeviceChangeCallback()
+    {
+        // We'll pause before sending a message, because on device removal, the OS hasn't always updated
+        // its device lists correctly at this point. This also helps avoid repeated callbacks.
+        startTimer (500);
+    }
+
+private:
+    HiddenMessageWindow messageWindow;
+
+    static LRESULT CALLBACK deviceChangeEventCallback (HWND h, const UINT message,
+                                                       const WPARAM wParam, const LPARAM lParam)
+    {
+        if (message == WM_DEVICECHANGE
+             && (wParam == 0x8000 /*DBT_DEVICEARRIVAL*/
+                  || wParam == 0x8004 /*DBT_DEVICEREMOVECOMPLETE*/
+                  || wParam == 0x0007 /*DBT_DEVNODES_CHANGED*/))
+        {
+            ((DeviceChangeDetector*) GetWindowLongPtr (h, GWLP_USERDATA))
+                ->triggerAsyncDeviceChangeCallback();
+        }
+
+        return DefWindowProc (h, message, wParam, lParam);
+    }
+
+    void timerCallback() override
+    {
+        stopTimer();
+        systemDeviceChanged();
+    }
+};
+
+#endif   // JUCE_WIN32_HIDDENMESSAGEWINDOW_H_INCLUDED