465 lines
17 KiB
C++
465 lines
17 KiB
C++
#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <osg/Camera>
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#include <osg/GraphicsContext>
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#include <osg/Math>
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#include <osg/Viewport>
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#include <osgViewer/Viewer>
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#include <plib/pu.h>
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#include <Main/fg_props.hxx>
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#include "CameraGroup.hxx"
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#include "FGEventHandler.hxx"
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#include "WindowSystemAdapter.hxx"
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#include "renderer.hxx"
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#if !defined(X_DISPLAY_MISSING)
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#define X_DOUBLE_SCROLL_BUG 1
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#endif
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#ifdef SG_MAC
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// hack - during interactive resize on Mac, OSG queues and then flushes
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// a large number of resize events, without doing any drawing.
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extern void puCleanUpJunk ( void ) ;
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#endif
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namespace flightgear
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{
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const int displayStatsKey = 1;
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const int printStatsKey = 2;
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// The manipulator is responsible for updating a Viewer's camera. Its
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// event handling method is also a convenient place to run the FG idle
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// and draw handlers.
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FGEventHandler::FGEventHandler() :
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idleHandler(0),
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keyHandler(0),
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mouseClickHandler(0),
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mouseMotionHandler(0),
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statsHandler(new FGStatsHandler),
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statsEvent(new osgGA::GUIEventAdapter),
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statsType(osgViewer::StatsHandler::NO_STATS),
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currentModifiers(0),
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resizable(true),
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mouseWarped(false),
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scrollButtonPressed(false),
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changeStatsCameraRenderOrder(false)
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{
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using namespace osgGA;
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statsHandler->setKeyEventTogglesOnScreenStats(displayStatsKey);
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statsHandler->setKeyEventPrintsOutStats(printStatsKey);
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statsEvent->setEventType(GUIEventAdapter::KEYDOWN);
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// OSG reports NumPad keycodes independent of the NumLock modifier.
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// Both KP-4 and KP-Left are reported as KEY_KP_Left (0xff96), so we
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// have to generate the locked keys ourselves.
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numlockKeyMap[GUIEventAdapter::KEY_KP_Insert] = '0';
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numlockKeyMap[GUIEventAdapter::KEY_KP_End] = '1';
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numlockKeyMap[GUIEventAdapter::KEY_KP_Down] = '2';
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numlockKeyMap[GUIEventAdapter::KEY_KP_Page_Down] = '3';
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numlockKeyMap[GUIEventAdapter::KEY_KP_Left] = '4';
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numlockKeyMap[GUIEventAdapter::KEY_KP_Begin] = '5';
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numlockKeyMap[GUIEventAdapter::KEY_KP_Right] = '6';
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numlockKeyMap[GUIEventAdapter::KEY_KP_Home] = '7';
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numlockKeyMap[GUIEventAdapter::KEY_KP_Up] = '8';
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numlockKeyMap[GUIEventAdapter::KEY_KP_Page_Up] = '9';
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numlockKeyMap[GUIEventAdapter::KEY_KP_Delete] = '.';
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// The comment above is incorrect on Mac osgViewer, at least. So we
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// need to map the 'num-locked' key codes to real values.
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numlockKeyMap[GUIEventAdapter::KEY_KP_0] = '0';
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numlockKeyMap[GUIEventAdapter::KEY_KP_1] = '1';
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numlockKeyMap[GUIEventAdapter::KEY_KP_2] = '2';
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numlockKeyMap[GUIEventAdapter::KEY_KP_3] = '3';
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numlockKeyMap[GUIEventAdapter::KEY_KP_4] = '4';
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numlockKeyMap[GUIEventAdapter::KEY_KP_5] = '5';
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numlockKeyMap[GUIEventAdapter::KEY_KP_6] = '6';
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numlockKeyMap[GUIEventAdapter::KEY_KP_7] = '7';
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numlockKeyMap[GUIEventAdapter::KEY_KP_8] = '8';
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numlockKeyMap[GUIEventAdapter::KEY_KP_9] = '9';
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numlockKeyMap[GUIEventAdapter::KEY_KP_Decimal] = '.';
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// mapping when NumLock is off
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noNumlockKeyMap[GUIEventAdapter::KEY_KP_Insert] = PU_KEY_INSERT;
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noNumlockKeyMap[GUIEventAdapter::KEY_KP_End] = PU_KEY_END;
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noNumlockKeyMap[GUIEventAdapter::KEY_KP_Down] = PU_KEY_DOWN;
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noNumlockKeyMap[GUIEventAdapter::KEY_KP_Page_Down] = PU_KEY_PAGE_DOWN;
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noNumlockKeyMap[GUIEventAdapter::KEY_KP_Left] = PU_KEY_LEFT;
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noNumlockKeyMap[GUIEventAdapter::KEY_KP_Begin] = '5';
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noNumlockKeyMap[GUIEventAdapter::KEY_KP_Right] = PU_KEY_RIGHT;
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noNumlockKeyMap[GUIEventAdapter::KEY_KP_Home] = PU_KEY_HOME;
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noNumlockKeyMap[GUIEventAdapter::KEY_KP_Up] = PU_KEY_UP;
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noNumlockKeyMap[GUIEventAdapter::KEY_KP_Page_Up] = PU_KEY_PAGE_UP;
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noNumlockKeyMap[GUIEventAdapter::KEY_KP_Delete] = 127;
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for (int i = 0; i < 128; i++)
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release_keys[i] = i;
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_display = fgGetNode("/sim/rendering/on-screen-statistics", true);
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_print = fgGetNode("/sim/rendering/print-statistics", true);
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}
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void FGEventHandler::reset()
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{
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_display = fgGetNode("/sim/rendering/on-screen-statistics", true);
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_print = fgGetNode("/sim/rendering/print-statistics", true);
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statsHandler->reset();
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}
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namespace
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{
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// Translate OSG modifier mask to FG modifier mask.
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int osgToFGModifiers(int modifiers)
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{
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int result = 0;
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if (modifiers & osgGA::GUIEventAdapter::MODKEY_SHIFT)
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result |= KEYMOD_SHIFT;
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if (modifiers & osgGA::GUIEventAdapter::MODKEY_CTRL)
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result |= KEYMOD_CTRL;
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if (modifiers & osgGA::GUIEventAdapter::MODKEY_ALT)
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result |= KEYMOD_ALT;
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if (modifiers & osgGA::GUIEventAdapter::MODKEY_META)
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result |= KEYMOD_META;
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if (modifiers & osgGA::GUIEventAdapter::MODKEY_SUPER)
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result |= KEYMOD_SUPER;
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if (modifiers & osgGA::GUIEventAdapter::MODKEY_HYPER)
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result |= KEYMOD_HYPER;
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return result;
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}
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}
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#if 0
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void FGEventHandler::init(const osgGA::GUIEventAdapter& ea,
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osgGA::GUIActionAdapter& us)
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{
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currentModifiers = osgToFGModifiers(ea.getModKeyMask());
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(void)handle(ea, us);
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}
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#endif
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// Calculate event coordinates in the viewport of the GUI camera, if
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// possible. Otherwise return false and (-1, -1).
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namespace
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{
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bool
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eventToViewport(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& us,
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int& x, int& y)
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{
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x = -1;
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y = -1;
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const osg::GraphicsContext* eventGC = ea.getGraphicsContext();
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if( !eventGC )
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return false; // TODO how can this happen?
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const osg::GraphicsContext::Traits* traits = eventGC->getTraits();
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osg::Camera* guiCamera = getGUICamera(CameraGroup::getDefault());
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if (!guiCamera)
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return false;
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osg::Viewport* vport = guiCamera->getViewport();
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if (!vport)
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return false;
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// Scale x, y to the dimensions of the window
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double wx = (((ea.getX() - ea.getXmin()) / (ea.getXmax() - ea.getXmin()))
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* (float)traits->width);
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double wy = (((ea.getY() - ea.getYmin()) / (ea.getYmax() - ea.getYmin()))
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* (float)traits->height);
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if (vport->x() <= wx && wx <= vport->x() + vport->width()
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&& vport->y() <= wy && wy <= vport->y() + vport->height()) {
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// Finally, into viewport coordinates. Change y to "increasing
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// downwards".
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x = wx - vport->x();
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y = vport->height() - (wy - vport->y());
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return true;
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} else {
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return false;
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}
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}
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}
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bool FGEventHandler::handle(const osgGA::GUIEventAdapter& ea,
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osgGA::GUIActionAdapter& us)
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{
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// Event handlers seem to be called even if the according event has already
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// been handled. Already handled events shouldn't be handled multiple times
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// so we need to exit here manually.
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if( ea.getHandled()
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// Let mouse move events pass to correctly handle mouse cursor hide
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// timeout while moving just on the canvas gui.
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// TODO We should clean up the whole mouse input and make hide
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// timeout independent of the event handler which consumed the
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// event.
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&& ea.getEventType() != osgGA::GUIEventAdapter::MOVE
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&& ea.getEventType() != osgGA::GUIEventAdapter::DRAG )
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return false;
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int x = 0;
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int y = 0;
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switch (ea.getEventType()) {
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case osgGA::GUIEventAdapter::FRAME:
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mouseWarped = false;
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handleStats(us);
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return true;
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case osgGA::GUIEventAdapter::KEYDOWN:
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case osgGA::GUIEventAdapter::KEYUP:
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{
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int key, modmask;
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handleKey(ea, key, modmask);
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eventToViewport(ea, us, x, y);
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if (keyHandler)
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(*keyHandler)(key, modmask, x, y);
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return true;
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}
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case osgGA::GUIEventAdapter::PUSH:
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case osgGA::GUIEventAdapter::RELEASE:
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{
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bool mainWindow = eventToViewport(ea, us, x, y);
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int button = 0;
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switch (ea.getButton()) {
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case osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON:
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button = 0;
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break;
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case osgGA::GUIEventAdapter::MIDDLE_MOUSE_BUTTON:
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button = 1;
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break;
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case osgGA::GUIEventAdapter::RIGHT_MOUSE_BUTTON:
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button = 2;
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break;
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}
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if (mouseClickHandler)
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(*mouseClickHandler)(button,
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(ea.getEventType()
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== osgGA::GUIEventAdapter::RELEASE), x, y, mainWindow, &ea);
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return true;
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}
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case osgGA::GUIEventAdapter::SCROLL:
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{
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bool mainWindow = eventToViewport(ea, us, x, y);
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#ifdef X_DOUBLE_SCROLL_BUG
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scrollButtonPressed = !scrollButtonPressed;
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if (!scrollButtonPressed) // Drop the button release event
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return true;
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#endif
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int button;
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if (ea.getScrollingMotion() == osgGA::GUIEventAdapter::SCROLL_2D) {
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if (ea.getScrollingDeltaY() > 0)
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button = 3;
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else if (ea.getScrollingDeltaY() < 0)
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button = 4;
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else
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button = -1;
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#if defined(SG_MAC)
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// bug https://code.google.com/p/flightgear-bugs/issues/detail?id=1286
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// Mac (Cocoa) interprets shuft+wheel as horizontal scroll
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if (ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_SHIFT) {
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if (ea.getScrollingDeltaX() > 0)
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button = 3;
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else if (ea.getScrollingDeltaX() < 0)
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button = 4;
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}
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#endif
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} else if (ea.getScrollingMotion() == osgGA::GUIEventAdapter::SCROLL_UP)
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button = 3;
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else
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button = 4;
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if (mouseClickHandler && button != -1) {
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(*mouseClickHandler)(button, 0, x, y, mainWindow, &ea);
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(*mouseClickHandler)(button, 1, x, y, mainWindow, &ea);
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}
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return true;
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}
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case osgGA::GUIEventAdapter::MOVE:
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case osgGA::GUIEventAdapter::DRAG:
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// If we warped the mouse, then disregard all pointer motion
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// events for this frame. We really want to flush the event
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// queue of mouse events, but don't have the ability to do
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// that with osgViewer.
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if (mouseWarped)
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return true;
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if (eventToViewport(ea, us, x, y) && mouseMotionHandler)
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(*mouseMotionHandler)(x, y, &ea);
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return true;
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case osgGA::GUIEventAdapter::RESIZE:
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SG_LOG(SG_VIEW, SG_DEBUG, "FGEventHandler::handle: RESIZE event " << ea.getWindowHeight() << " x " << ea.getWindowWidth() << ", resizable: " << resizable);
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CameraGroup::getDefault()->resized();
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if (resizable)
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globals->get_renderer()->resize(ea.getWindowWidth(), ea.getWindowHeight());
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statsHandler->handle(ea, us);
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#ifdef SG_MAC
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// work around OSG Cocoa-Viewer issue with resize event handling,
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// where resize events are queued up, then dispatched in a batch, with
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// no interveningd drawing calls.
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puCleanUpJunk();
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#endif
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return true;
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case osgGA::GUIEventAdapter::CLOSE_WINDOW:
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case osgGA::GUIEventAdapter::QUIT_APPLICATION:
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fgOSExit(0);
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return true;
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default:
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return false;
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}
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}
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void FGEventHandler::handleKey(const osgGA::GUIEventAdapter& ea, int& key,
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int& modifiers)
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{
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using namespace osgGA;
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key = ea.getKey();
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// XXX Probably other translations are needed too.
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switch (key) {
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case GUIEventAdapter::KEY_Escape: key = 0x1b; break;
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case GUIEventAdapter::KEY_Return: key = '\n'; break;
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case GUIEventAdapter::KEY_BackSpace: key = '\b'; break;
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case GUIEventAdapter::KEY_Delete: key = 0x7f; break;
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case GUIEventAdapter::KEY_Tab: key = '\t'; break;
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case GUIEventAdapter::KEY_Left: key = PU_KEY_LEFT; break;
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case GUIEventAdapter::KEY_Up: key = PU_KEY_UP; break;
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case GUIEventAdapter::KEY_Right: key = PU_KEY_RIGHT; break;
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case GUIEventAdapter::KEY_Down: key = PU_KEY_DOWN; break;
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case GUIEventAdapter::KEY_Page_Up: key = PU_KEY_PAGE_UP; break;
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case GUIEventAdapter::KEY_Page_Down: key = PU_KEY_PAGE_DOWN; break;
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case GUIEventAdapter::KEY_Home: key = PU_KEY_HOME; break;
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case GUIEventAdapter::KEY_End: key = PU_KEY_END; break;
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case GUIEventAdapter::KEY_Insert: key = PU_KEY_INSERT; break;
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case GUIEventAdapter::KEY_F1: key = PU_KEY_F1; break;
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case GUIEventAdapter::KEY_F2: key = PU_KEY_F2; break;
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case GUIEventAdapter::KEY_F3: key = PU_KEY_F3; break;
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case GUIEventAdapter::KEY_F4: key = PU_KEY_F4; break;
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case GUIEventAdapter::KEY_F5: key = PU_KEY_F5; break;
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case GUIEventAdapter::KEY_F6: key = PU_KEY_F6; break;
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case GUIEventAdapter::KEY_F7: key = PU_KEY_F7; break;
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case GUIEventAdapter::KEY_F8: key = PU_KEY_F8; break;
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case GUIEventAdapter::KEY_F9: key = PU_KEY_F9; break;
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case GUIEventAdapter::KEY_F10: key = PU_KEY_F10; break;
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case GUIEventAdapter::KEY_F11: key = PU_KEY_F11; break;
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case GUIEventAdapter::KEY_F12: key = PU_KEY_F12; break;
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case GUIEventAdapter::KEY_KP_Enter: key = '\r'; break;
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case GUIEventAdapter::KEY_KP_Add: key = '+'; break;
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case GUIEventAdapter::KEY_KP_Divide: key = '/'; break;
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case GUIEventAdapter::KEY_KP_Multiply: key = '*'; break;
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case GUIEventAdapter::KEY_KP_Subtract: key = '-'; break;
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}
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osgGA::GUIEventAdapter::EventType eventType = ea.getEventType();
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#ifdef __APPLE__
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// Num Lock is always true on Mac
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std::map<int, int>::iterator numPadIter = numlockKeyMap.find(key);
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if (numPadIter != numlockKeyMap.end()) {
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key = numPadIter->second;
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}
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#else
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if (ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_NUM_LOCK)
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{
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// NumLock on: map to numeric keys
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std::map<int, int>::iterator numPadIter = numlockKeyMap.find(key);
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if (numPadIter != numlockKeyMap.end()) {
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key = numPadIter->second;
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}
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}
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else
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{
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// NumLock off: map to PU arrow keys
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std::map<int, int>::iterator numPadIter = noNumlockKeyMap.find(key);
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if (numPadIter != noNumlockKeyMap.end()) {
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key = numPadIter->second;
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}
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}
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#endif
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modifiers = osgToFGModifiers(ea.getModKeyMask());
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currentModifiers = modifiers;
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if (eventType == osgGA::GUIEventAdapter::KEYUP)
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modifiers |= KEYMOD_RELEASED;
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// Release the letter key, for which the key press was reported. This
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// is to deal with Ctrl-press -> a-press -> Ctrl-release -> a-release
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// correctly.
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if (key >= 0 && key < 128) {
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if (modifiers & KEYMOD_RELEASED) {
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key = release_keys[key];
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} else {
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release_keys[key] = key;
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if (key >= 1 && key <= 26) {
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release_keys[key + '@'] = key;
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release_keys[key + '`'] = key;
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} else if (key >= 'A' && key <= 'Z') {
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release_keys[key - '@'] = key;
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release_keys[tolower(key)] = key;
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} else if (key >= 'a' && key <= 'z') {
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release_keys[key - '`'] = key;
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release_keys[toupper(key)] = key;
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}
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}
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}
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}
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void FGEventHandler::handleStats(osgGA::GUIActionAdapter& us)
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{
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int type = _display->getIntValue() % osgViewer::StatsHandler::LAST;
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if (type != statsType) {
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statsEvent->setKey(displayStatsKey);
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do {
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statsType = (statsType + 1) % osgViewer::StatsHandler::LAST;
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statsHandler->handle(*statsEvent, us);
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if (changeStatsCameraRenderOrder) {
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statsHandler->getCamera()->setRenderOrder(osg::Camera::POST_RENDER, 99999);
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changeStatsCameraRenderOrder = false;
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}
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} while (statsType != type);
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_display->setIntValue(statsType);
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}
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if (_print->getBoolValue()) {
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statsEvent->setKey(printStatsKey);
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statsHandler->handle(*statsEvent, us);
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_print->setBoolValue(false);
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}
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}
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void eventToWindowCoords(const osgGA::GUIEventAdapter* ea,
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double& x, double& y)
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{
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using namespace osg;
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const GraphicsContext* gc = ea->getGraphicsContext();
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const GraphicsContext::Traits* traits = gc->getTraits() ;
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// Scale x, y to the dimensions of the window
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x = (((ea->getX() - ea->getXmin()) / (ea->getXmax() - ea->getXmin()))
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* (double)traits->width);
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y = (((ea->getY() - ea->getYmin()) / (ea->getYmax() - ea->getYmin()))
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* (double)traits->height);
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if (ea->getMouseYOrientation() == osgGA::GUIEventAdapter::Y_INCREASING_DOWNWARDS)
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y = (double)traits->height - y;
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}
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#if 0
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void eventToWindowCoordsYDown(const osgGA::GUIEventAdapter* ea,
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double& x, double& y)
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{
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using namespace osg;
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const GraphicsContext* gc = ea->getGraphicsContext();
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const GraphicsContext::Traits* traits = gc->getTraits() ;
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// Scale x, y to the dimensions of the window
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x = (((ea->getX() - ea->getXmin()) / (ea->getXmax() - ea->getXmin()))
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* (double)traits->width);
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y = (((ea->getY() - ea->getYmin()) / (ea->getYmax() - ea->getYmin()))
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* (double)traits->height);
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if (ea->getMouseYOrientation() == osgGA::GUIEventAdapter::Y_INCREASING_UPWARDS)
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y = (double)traits->height - y;
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}
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#endif
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}
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