gtk2_ardour/vst_pluginui.cc

   1 /*
   2     Copyright (C) 2004 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <fst.h>
  21 #include <gtk/gtk.h>
  22 #include <gtk/gtksocket.h>
  23 #include <ardour/insert.h>
  24 #include <ardour/vst_plugin.h>
  25
  26 #include "plugin_ui.h"
  27
  28 #include <gdk/gdkx.h>
  29
  30 using namespace Gtk;
  31 using namespace ARDOUR;
  32 using namespace PBD;
  33
  34 VSTPluginUI::VSTPluginUI (boost::shared_ptr<PluginInsert> pi, boost::shared_ptr<VSTPlugin> vp)
  35         : PlugUIBase (pi),
  36           vst (vp)
  37 {
  38         create_preset_store ();
  39
  40         fst_run_editor (vst->fst());
  41
  42         preset_box.set_spacing (6);
  43         preset_box.set_border_width (6);
  44         preset_box.pack_end (bypass_button, false, false, 10);
  45         preset_box.pack_end (save_button, false, false);
  46         preset_box.pack_end (vst_preset_combo, false, false);
  47
  48         vst_preset_combo.signal_changed().connect (mem_fun (*this, &VSTPluginUI::preset_chosen));
  49
  50         bypass_button.set_active (!insert->active());
  51
  52         pack_start (preset_box, false, false);
  53         pack_start (socket, true, true);
  54 }
  55
  56 VSTPluginUI::~VSTPluginUI ()
  57 {
  58         // plugin destructor destroys the custom GUI, via Windows fun-and-games,
  59         // and then our PluginUIWindow does the rest
  60 }
  61
  62 void
  63 VSTPluginUI::preset_chosen ()
  64 {
  65         // we can't dispatch directly here, too many plugins only expects one GUI thread.
  66         vst->fst()->want_program = vst_preset_combo.get_active_row_number ();
  67         socket.grab_focus ();
  68 }
  69
  70 int
  71 VSTPluginUI::get_preferred_height ()
  72 {
  73         return vst->fst()->height;
  74 }
  75
  76 int
  77 VSTPluginUI::get_preferred_width ()
  78 {
  79         return vst->fst()->width;
  80 }
  81
  82 int
  83 VSTPluginUI::package (Gtk::Window& win)
  84 {
  85         /* forward configure events to plugin window */
  86
  87         win.signal_configure_event().connect (bind (mem_fun (*this, &VSTPluginUI::configure_handler), &socket), false);
  88
  89         /*
  90            this assumes that the window's owner understands the XEmbed protocol.
  91         */
  92
  93         socket.add_id (fst_get_XID (vst->fst()));
  94
  95         fst_move_window_into_view (vst->fst());
  96
  97         return 0;
  98 }
  99
 100 bool
 101 VSTPluginUI::configure_handler (GdkEventConfigure* ev, Gtk::Socket *socket)
 102 {
 103         XEvent event;
 104         gint x, y;
 105         GdkWindow* w;
 106
 107         if (socket == 0 || ((w = socket->gobj()->plug_window) == 0)) {
 108                 return false;
 109         }
 110
 111         event.xconfigure.type = ConfigureNotify;
 112         event.xconfigure.event = GDK_WINDOW_XWINDOW (w);
 113         event.xconfigure.window = GDK_WINDOW_XWINDOW (w);
 114
 115         /* The ICCCM says that synthetic events should have root relative
 116          * coordinates. We still aren't really ICCCM compliant, since
 117          * we don't send events when the real toplevel is moved.
 118          */
 119         gdk_error_trap_push ();
 120         gdk_window_get_origin (w, &x, &y);
 121         gdk_error_trap_pop ();
 122
 123         event.xconfigure.x = x;
 124         event.xconfigure.y = y;
 125         event.xconfigure.width = GTK_WIDGET(socket->gobj())->allocation.width;
 126         event.xconfigure.height = GTK_WIDGET(socket->gobj())->allocation.height;
 127
 128         event.xconfigure.border_width = 0;
 129         event.xconfigure.above = None;
 130         event.xconfigure.override_redirect = False;
 131
 132         gdk_error_trap_push ();
 133         XSendEvent (GDK_WINDOW_XDISPLAY (w), GDK_WINDOW_XWINDOW (w), False, StructureNotifyMask, &event);
 134         gdk_error_trap_pop ();
 135
 136         return false;
 137 }
 138
 139 void
 140 VSTPluginUI::create_preset_store ()
 141 {
 142         FST *fst = vst->fst();
 143         int vst_version = fst->plugin->dispatcher (fst->plugin, effGetVstVersion, 0, 0, NULL, 0.0f);
 144
 145         preset_model = ListStore::create (preset_columns);
 146
 147         for (int i = 0; i < fst->plugin->numPrograms; ++i) {
 148                 char buf[100];
 149                 TreeModel::Row row = *(preset_model->append());
 150
 151                 snprintf (buf, 90, "preset %d", i);
 152
 153                 if (vst_version >= 2) {
 154                         fst->plugin->dispatcher (fst->plugin, 29, i, 0, buf, 0.0);
 155                 }
 156
 157                 row[preset_columns.name] = buf;
 158                 row[preset_columns.number] = i;
 159         }
 160
 161         if (fst->plugin->numPrograms > 0) {
 162                 fst->plugin->dispatcher( fst->plugin, effSetProgram, 0, 0, NULL, 0.0 );
 163         }
 164
 165         vst_preset_combo.set_model (preset_model);
 166
 167         CellRenderer* renderer = manage (new CellRendererText());
 168         vst_preset_combo.pack_start (*renderer, true);
 169         vst_preset_combo.add_attribute (*renderer, "text", 0);
 170
 171         if (vst->fst()->current_program != -1) {
 172                 vst_preset_combo.set_active (vst->fst()->current_program);
 173         } else {
 174                 vst_preset_combo.set_active (0);
 175         }
 176 }
 177
 178 typedef int (*error_handler_t)( Display *, XErrorEvent *);
 179 static Display *the_gtk_display;
 180 static error_handler_t wine_error_handler;
 181 static error_handler_t gtk_error_handler;
 182
 183 static int
 184 fst_xerror_handler( Display *disp, XErrorEvent *ev )
 185 {
 186         if (disp == the_gtk_display) {
 187                 printf ("relaying error to gtk\n");
 188                 return gtk_error_handler (disp, ev);
 189         } else {
 190                 printf( "relaying error to wine\n" );
 191                 return wine_error_handler (disp, ev);
 192         }
 193 }
 194
 195 void
 196 gui_init (int *argc, char **argv[])
 197 {
 198         wine_error_handler = XSetErrorHandler (NULL);
 199         gtk_init (argc, argv);
 200         the_gtk_display = gdk_x11_display_get_xdisplay (gdk_display_get_default());
 201         gtk_error_handler = XSetErrorHandler( fst_xerror_handler );
 202 }
 203