diff options
Diffstat (limited to 'muse2/muse/widgets/vst_native_editor.cpp')
| -rw-r--r-- | muse2/muse/widgets/vst_native_editor.cpp | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/muse2/muse/widgets/vst_native_editor.cpp b/muse2/muse/widgets/vst_native_editor.cpp new file mode 100644 index 00000000..8f739041 --- /dev/null +++ b/muse2/muse/widgets/vst_native_editor.cpp @@ -0,0 +1,223 @@ +//========================================================= +// MusE +// Linux Music Editor +// vst_native_editor.cpp +// (C) Copyright 2012 Tim E. Real (terminator356 on users dot sourceforge dot net) +// Some of the editor window coding was adapted from QTractor (by rncbc aka Rui Nuno Capela) +// +// This program is free software; you can redistribute it and/or +// modify it under the terms of the GNU General Public License +// as published by the Free Software Foundation; version 2 of +// the License, or (at your option) any later version. +// +// This program 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. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +// +//========================================================= + +#include "vst_native_editor.h" +#include "vst_native.h" + +#include <QtGlobal> +#if defined(Q_WS_X11) +#include <QX11Info> +#endif + +namespace MusEGui { + +//--------------------------------------------------------------------- +// Helpers for editor widget. +//--------------------------------------------------------------------- + +#if defined(Q_WS_X11) + +static bool g_bXError = false; + +static int tempXErrorHandler ( Display *, XErrorEvent * ) +{ + g_bXError = true; + return 0; +} + +static XEventProc getXEventProc ( Display *pDisplay, Window w ) +{ + int iSize; + unsigned long iBytes, iCount; + unsigned char *pData; + XEventProc eventProc = NULL; + Atom aType, aName = XInternAtom(pDisplay, "_XEventProc", false); + + g_bXError = false; + XErrorHandler oldErrorHandler = XSetErrorHandler(tempXErrorHandler); + XGetWindowProperty(pDisplay, w, aName, 0, 1, false, + AnyPropertyType, &aType, &iSize, &iCount, &iBytes, &pData); + if (g_bXError == false && iCount == 1) + eventProc = (XEventProc) (pData); + XSetErrorHandler(oldErrorHandler); + + return eventProc; +} + +static Window getXChildWindow ( Display *pDisplay, Window w ) +{ + Window wRoot, wParent, *pwChildren; + unsigned int iChildren = 0; + + XQueryTree(pDisplay, w, &wRoot, &wParent, &pwChildren, &iChildren); + + return (iChildren > 0 ? pwChildren[0] : 0); +} + +#endif // Q_WS_X11 + +VstNativeEditor::VstNativeEditor(QWidget *parent, Qt::WindowFlags wflags) + : QWidget(parent, wflags), + #if defined(Q_WS_X11) + _display(QX11Info::display()), + _vstEditor(0), + _vstEventProc(0), + _buttonPress(false), + #endif + _sif(0) +{ + setAttribute(Qt::WA_DeleteOnClose); +} + +VstNativeEditor::~VstNativeEditor() +{ + if(_sif) + { + _sif->dispatch(effEditClose, 0, 0, NULL, 0.0f); + _sif->editorDeleted(); + _sif = NULL; + } +} + +//--------------------------------------------------------------------- +// open +//--------------------------------------------------------------------- + +void VstNativeEditor::open(MusECore::VstNativeSynthIF* sif) +{ + _sif = sif; + + // Start the proper (child) editor... + long value = 0; + void *ptr = (void *) winId(); +#if defined(Q_WS_X11) + value = (long) _display; +#endif + + MusECore::VstRect* pRect; + if(_sif->dispatch(effEditGetRect, 0, 0, &pRect, 0.0f)) + { + int w = pRect->right - pRect->left; + int h = pRect->bottom - pRect->top; + if (w > 0 && h > 0) + QWidget::setFixedSize(w, h); + } + + _sif->dispatch(effEditOpen, 0, value, ptr, 0.0f); + +#if defined(Q_WS_X11) + _vstEditor = getXChildWindow(_display, (Window) winId()); + if(_vstEditor) + _vstEventProc = getXEventProc(_display, _vstEditor); +#endif + + if(_sif->track()) + { + QString title = _sif->track()->name() + ":" + _sif->pluginLabel(); + setWindowTitle(title); + } + + //_sif->editorOpened(); + if(!isVisible()) + show(); + raise(); + activateWindow(); + _sif->idleEditor(); +} + +#if defined(Q_WS_X11) + +//--------------------------------------------------------------------- +// x11EventFilter +//--------------------------------------------------------------------- + +bool VstNativeEditor::x11EventFilter(XEvent *pEvent) +{ + if(_vstEventProc && pEvent->xany.window == _vstEditor) + { + // Avoid mouse tracking events... + switch (pEvent->xany.type) { + case ButtonPress: + _buttonPress = true; + break; + case ButtonRelease: + _buttonPress = false; + break; + case MotionNotify: + if(!_buttonPress) + return false; + // Fall thru... + default: + break; + } + // Process as intended... + (*_vstEventProc)(pEvent); + return true; + } + else + return false; +} + +#endif + +//--------------------------------------------------------------------- +// showEvent +//--------------------------------------------------------------------- + +void VstNativeEditor::showEvent(QShowEvent *pShowEvent) +{ + QWidget::showEvent(pShowEvent); + + if(_sif) + _sif->editorOpened(); +} + +//--------------------------------------------------------------------- +// closeEvent +//--------------------------------------------------------------------- + +void VstNativeEditor::closeEvent(QCloseEvent *pCloseEvent) +{ + if(_sif) + _sif->editorClosed(); + + QWidget::closeEvent(pCloseEvent); +} + +//--------------------------------------------------------------------- +// moveEvent +//--------------------------------------------------------------------- + +void VstNativeEditor::moveEvent(QMoveEvent *pMoveEvent) +{ + QWidget::moveEvent(pMoveEvent); +#if defined(Q_WS_X11) + if(_vstEditor) + { + XMoveWindow(_display, _vstEditor, 0, 0); + //QWidget::update(); // REMOVE Tim. Or keep? Commented in Qtractor. + } +#endif +} + +} // namespace MusEGui |