aboutsummaryrefslogtreecommitdiff
path: root/externals/grill/vst/src/editorwin.hpp
blob: 558301bc51c86a3abe1f398e85db9d3fa339b933 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
/* 
vst~ - VST plugin object for PD 
based on the work of Jarno Seppänen and Mark Williamson

Copyright (c)2003-2005 Thomas Grill (gr@grrrr.org)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.  
*/

#if FLEXT_OS != FLEXT_OS_WIN
// only Windows code is situated in this file
#error Wrong implementation
#endif

#include <map>
#include <windows.h>

class ThrCmp
{
public:
    inline bool operator()(const flext::thrid_t &a,const flext::thrid_t &b) const
    {
        if(sizeof(a) == sizeof(size_t))
            return *(size_t *)&a < *(size_t *)&b;
        else
            return memcmp(&a,&b,sizeof(a)) < 0;
    }
};

typedef std::map<flext::thrid_t,VSTPlugin *,ThrCmp> WndMap;
static WndMap wndmap;
static flext::ThrMutex mapmutex;

#define TIMER_INTERVAL 25
#define WCLNAME "vst~-class"


static LRESULT CALLBACK wndproc(HWND hwnd,UINT msg,WPARAM wp,LPARAM lp)
{
    mapmutex.Lock();
    VSTPlugin *plug = wndmap[flext::GetThreadId()];
    mapmutex.Unlock();
    FLEXT_ASSERT(plug != NULL);

    LRESULT res = 0;

    switch(msg) {
        case WM_CREATE: 
            // Initialize the window. 
            plug->StartEditing(hwnd);
            break; 

        case WM_CLOSE:
#ifdef FLEXT_LOGGING
            flext::post("WM_CLOSE");
#endif
            plug->StopEditing();

            DestroyWindow(hwnd);
            break; 
        case WM_DESTROY: 
#ifdef FLEXT_LOGGING
            flext::post("WM_DESTROY");
#endif
            // stop editor thread
            PostQuitMessage(0); 
            break; 
        
        case WM_TIMER: // fall through
        case WM_ENTERIDLE:
            plug->EditorIdle();		
            break; 
#if 0
        case WM_WINDOWPOSCHANGED: {
            // ignore after WM_CLOSE so that x,y positions are preserved
            if(!plug->IsEdited()) break;

            WINDOWPOS *w = (WINDOWPOS *)lp;

	        WINDOWINFO winfo;
	        winfo.cbSize = sizeof(winfo);
	        GetWindowInfo(hwnd,&winfo);
            int cpx = winfo.rcWindow.left-winfo.rcClient.left;
            int cpy = winfo.rcWindow.top-winfo.rcClient.top;
            int csx = winfo.rcWindow.right-winfo.rcClient.right-cpx;
            int csy = winfo.rcWindow.bottom-winfo.rcClient.bottom-cpy;
            // send normalized coordinates to plugin
            plug->SetPos(w->x+cpx,w->y+cpy,false);
            plug->SetSize(w->cx+csx,w->cy+csy,false);
            return 0; 
        }
#else
        case WM_MOVE: {
            // ignore after WM_CLOSE so that x,y positions are preserved
            if(!plug->IsEdited()) break;

            WORD wx = LOWORD(lp),wy = HIWORD(lp);
            short x = reinterpret_cast<short &>(wx),y = reinterpret_cast<short &>(wy);
            // x and y are the coordinates of the client rect (= actual VST interface)

	        WINDOWINFO winfo;
	        winfo.cbSize = sizeof(winfo);
	        GetWindowInfo(hwnd,&winfo);
            int px = winfo.rcWindow.left-winfo.rcClient.left;
            int py = winfo.rcWindow.top-winfo.rcClient.top;
            // send normalized coordinates to plugin
            plug->SetPos(x+px,y+py,false);
            break; 
        }

        case WM_SIZE: {
            if(!plug->IsEdited()) break;

            WORD wx = LOWORD(lp),wy = HIWORD(lp);
            short x = reinterpret_cast<short &>(wx),y = reinterpret_cast<short &>(wy);
            // x and y are the coordinates of the client rect (= actual VST interface)

	        WINDOWINFO winfo;
	        winfo.cbSize = sizeof(winfo);
	        GetWindowInfo(hwnd,&winfo);
            int px = winfo.rcWindow.left-winfo.rcClient.left;
            int py = winfo.rcWindow.top-winfo.rcClient.top;
            int sx = winfo.rcWindow.right-winfo.rcClient.right-px;
            int sy = winfo.rcWindow.bottom-winfo.rcClient.bottom-py;
            // send normalized coordinates to plugin
            plug->SetSize(x+sx,y+sy,false);
            break; 
        }
#endif

#if 0 // NOT needed for Windows
        case WM_PAINT: {
            // Paint the window's client area. 
            RECT rect;
            GetUpdateRect(hwnd,&rect,FALSE);
            ERect erect;
            erect.left = rect.left;
            erect.top = rect.top;
            erect.right = rect.right;
            erect.bottom = rect.bottom;
            plug->Paint(erect);
            break;  
        }
#endif
        case WM_SHOWWINDOW:
            plug->Visible(wp != FALSE,false);
            break;

        default: 
        #ifdef FLEXT_LOGGING
//            flext::post("WND MSG %i, WP=%i, lp=%i",msg,wp,lp);
        #endif

            res = DefWindowProc(hwnd,msg,wp,lp); 
    }
    return res;
}

static void windowsize(HWND wnd,int x,int y,int w,int h)
{
    // pre correction
    WINDOWINFO winfo;
	winfo.cbSize = sizeof(winfo);
	GetWindowInfo(wnd,&winfo);
    int sx1 = (winfo.rcWindow.right-winfo.rcClient.right)-(winfo.rcWindow.left-winfo.rcClient.left);
    int sy1 = (winfo.rcWindow.bottom-winfo.rcClient.bottom)-(winfo.rcWindow.top-winfo.rcClient.top);

    // First reflect new state in flags
    SetWindowPos(wnd,NULL,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED);

    // post correction
	GetWindowInfo(wnd,&winfo);
    int sx2 = (winfo.rcWindow.right-winfo.rcClient.right)-(winfo.rcWindow.left-winfo.rcClient.left);
    int sy2 = (winfo.rcWindow.bottom-winfo.rcClient.bottom)-(winfo.rcWindow.top-winfo.rcClient.top);

    // set pos, size and flags
    SetWindowPos(wnd,NULL,x,y,w+sx2-sx1,h+sy2-sy1,SWP_NOZORDER);
}

static void threadfun(flext::thr_params *p)
{
    flext::RelPriority(-2);

    VSTPlugin *plug = (VSTPlugin *)p;
    HINSTANCE hinstance = (HINSTANCE)GetModuleHandle(NULL);
    flext::thrid_t thrid = flext::GetThreadId();

    mapmutex.Lock();
    wndmap[thrid] = plug;
    mapmutex.Unlock();    

    char tmp[256];
    sprintf(tmp,"vst~ - %s",plug->GetName());

    // Get size from plugin
	ERect r;
    plug->GetEditorRect(r);

    HWND wnd = CreateWindowEx(
        plug->GetHandle()?WS_EX_APPWINDOW:WS_EX_TOOLWINDOW,
        WCLNAME,tmp,
        WS_POPUP|WS_SYSMENU|WS_MINIMIZEBOX, // no border for the beginning to set proper coordinates
        plug->GetX(),plug->GetY(),r.right-r.left,r.bottom-r.top,
        NULL,NULL,
        hinstance,NULL
    );

    if(!wnd) 
        FLEXT_LOG1("wnd == NULL: %i",GetLastError());
    else {
        // idle timer
        SetTimer(wnd,0,TIMER_INTERVAL,NULL);

        // set caption style
        CaptionEditor(plug,plug->GetCaption());

        if(plug->IsVisible()) {
            SetForegroundWindow(wnd);
            ShowWindow(wnd,1); 

            // notify plugin
    //	    plug->Dispatch(effEditTop,0,0,0,0);
        }
        else
            ShowWindow(wnd,0);

        try 
        {

        // Message loop
        MSG msg;
        BOOL bRet;
        while( (bRet = GetMessage( &msg, NULL, 0, 0 )) != 0) { 
            if(bRet == -1) {
                // handle the error and possibly exit
                FLEXT_LOG1("GetMessage error: %i",GetLastError());
            }
            else {
                TranslateMessage(&msg); 
//                double tm1 = flext::GetOSTime();
                DispatchMessage(&msg); 
//                double tm2 = flext::GetOSTime();
//                if(tm2-tm1 > 0.01) FLEXT_LOG1("halt %lf",(tm2-tm1)*1000);
            }
        }

        }

        catch(exception &e) {
            flext::post("vst~ - exception caught, exiting: %s",e.what());
        }
        catch(...) {
            flext::post("vst~ - exception caught, exiting");
        }

        if(plug) plug->EditingEnded();
    }

    mapmutex.Lock();
    wndmap.erase(thrid);
    mapmutex.Unlock();
}

void SetupEditor()
{
    HINSTANCE hinstance = (HINSTANCE)GetModuleHandle(NULL);

    // Fill in the window class structure with parameters that describe the main window. 
    WNDCLASS wcx; 
    wcx.style = CS_DBLCLKS; // | CS_HREDRAW | CS_VREDRAW;   // redraw if size changes 
    wcx.lpfnWndProc = wndproc;     // points to window procedure 
    wcx.cbClsExtra = 0;                // no extra class memory 
    wcx.cbWndExtra = 0;                // no extra window memory 
    wcx.hInstance = hinstance;         // handle to instance 
    wcx.hIcon = NULL; //LoadIcon(NULL, IDI_APPLICATION);              // predefined app. icon 
    wcx.hCursor = LoadCursor(NULL, IDC_ARROW);                    // predefined arrow 
    wcx.hbrBackground = NULL; //GetStockObject(WHITE_BRUSH);                  // white background brush 
    wcx.lpszMenuName = NULL;    // name of menu resource 
    wcx.lpszClassName = WCLNAME;  // name of window class 

    ATOM at = RegisterClass(&wcx); 
    FLEXT_ASSERT(at);
}

void StartEditor(VSTPlugin *p)
{
#ifdef FLEXT_LOGGING
    flext::post("Start editor 1");
#endif
    flext::LaunchThread(threadfun,reinterpret_cast<flext::thr_params *>(p));
#ifdef FLEXT_LOGGING
    flext::post("Start editor 2");
#endif
}

void StopEditor(VSTPlugin *p) 
{
#ifdef FLEXT_LOGGING
    flext::post("Stop editor 1");
#endif
    PostMessage(p->EditorHandle(),WM_CLOSE,0,0); 
//    flext::StopThread(threadfun,reinterpret_cast<flext::thr_params *>(p));
#ifdef FLEXT_LOGGING
    flext::post("Stop editor 2");
#endif
}

void ShowEditor(VSTPlugin *p,bool show) 
{
    ShowWindow(p->EditorHandle(),show); 
}

void MoveEditor(VSTPlugin *p,int x,int y) 
{
    HWND wnd = p->EditorHandle();
    SetWindowPos(wnd,NULL,x,y,0,0,SWP_NOSIZE|SWP_NOZORDER);
}

void SizeEditor(VSTPlugin *p,int x,int y) 
{
    HWND wnd = p->EditorHandle();
    SetWindowPos(wnd,NULL,0,0,x,y,SWP_NOMOVE|SWP_NOZORDER);
}

void FrontEditor(VSTPlugin *p) 
{
    SetForegroundWindow(p->EditorHandle());
}

void CaptionEditor(VSTPlugin *plug,bool c)
{
    HWND wnd = plug->EditorHandle();
    LONG ns,style = GetWindowLong(wnd,GWL_STYLE);
    if(c) ns = style|WS_BORDER|WS_CAPTION;
    else ns = style&~(WS_BORDER|WS_CAPTION);
    if(ns != style) {
        SetWindowLong(wnd,GWL_STYLE,ns);
        windowsize(wnd,plug->GetX(),plug->GetY(),plug->GetW(),plug->GetH());
    }
}

void HandleEditor(VSTPlugin *plug,bool h)
{
    HWND wnd = plug->EditorHandle();
    bool v = plug->IsVisible();
    if(v) ShowWindow(wnd,FALSE);
    SetWindowLong(wnd,GWL_EXSTYLE,h?WS_EX_APPWINDOW:WS_EX_TOOLWINDOW);
    if(v) ShowWindow(wnd,TRUE);
}

void TitleEditor(VSTPlugin *p,const char *t) 
{
    SetWindowText(p->EditorHandle(),t);
}

/*
bool IsEditorShown(const VSTPlugin *p) 
{
    return IsWindowVisible(p->EditorHandle()) != FALSE;
}
*/