// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
#include "CanvasElement.hxx"
-#include <simgear/canvas/Canvas.hxx>
-#include <simgear/canvas/CanvasEventListener.hxx>
#include <simgear/canvas/CanvasEventVisitor.hxx>
#include <simgear/canvas/MouseEvent.hxx>
+#include <simgear/math/SGMisc.hxx>
+#include <simgear/misc/strutils.hxx>
#include <simgear/scene/material/parseBlendFunc.hxx>
#include <osg/Drawable>
#include <boost/algorithm/string/predicate.hpp>
#include <boost/foreach.hpp>
-#include <boost/lexical_cast.hpp>
#include <boost/make_shared.hpp>
-#include <boost/tokenizer.hpp>
#include <cassert>
+#include <cmath>
#include <cstring>
namespace simgear
{
const std::string NAME_TRANSFORM = "tf";
+ /**
+ * glScissor with coordinates relative to different reference frames.
+ */
+ class Element::RelativeScissor:
+ public osg::Scissor
+ {
+ public:
+
+ ReferenceFrame _coord_reference;
+ osg::Matrix _parent_inverse;
+
+ RelativeScissor():
+ _coord_reference(GLOBAL)
+ {}
+
+ bool contains(const osg::Vec2f& pos) const
+ {
+ return _x <= pos.x() && pos.x() <= _x + _width
+ && _y <= pos.y() && pos.y() <= _y + _height;
+ }
+
+ bool contains( const osg::Vec2f& global_pos,
+ const osg::Vec2f& parent_pos,
+ const osg::Vec2f& local_pos ) const
+ {
+ switch( _coord_reference )
+ {
+ case GLOBAL: return contains(global_pos);
+ case PARENT: return contains(parent_pos);
+ case LOCAL: return contains(local_pos);
+ }
+
+ return false;
+ }
+
+ virtual void apply(osg::State& state) const
+ {
+ const osg::Viewport* vp = state.getCurrentViewport();
+ float w2 = 0.5 * vp->width(),
+ h2 = 0.5 * vp->height();
+
+ osg::Matrix model_view
+ (
+ w2, 0, 0, 0,
+ 0, h2, 0, 0,
+ 0, 0, 1, 0,
+ w2, h2, 0, 1
+ );
+ model_view.preMult(state.getProjectionMatrix());
+
+ if( _coord_reference != GLOBAL )
+ {
+ model_view.preMult(state.getModelViewMatrix());
+
+ if( _coord_reference == PARENT )
+ model_view.preMult(_parent_inverse);
+ }
+
+ const osg::Vec2 scale( model_view(0,0), model_view(1,1)),
+ offset(model_view(3,0), model_view(3,1));
+
+ // TODO check/warn for rotation?
+
+ GLint x = SGMiscf::roundToInt(scale.x() * _x + offset.x()),
+ y = SGMiscf::roundToInt(scale.y() * _y + offset.y()),
+ w = SGMiscf::roundToInt(std::fabs(scale.x()) * _width),
+ h = SGMiscf::roundToInt(std::fabs(scale.y()) * _height);
+
+ if( scale.x() < 0 )
+ x -= w;
+ if( scale.y() < 0 )
+ y -= h;
+
+ glScissor(x, y, w, h);
+ }
+ };
+
//----------------------------------------------------------------------------
Element::OSGUserData::OSGUserData(ElementPtr element):
element(element)
//----------------------------------------------------------------------------
Element::~Element()
{
+ if( !_transform.valid() )
+ return;
+
+ for(unsigned int i = 0; i < _transform->getNumChildren(); ++i)
+ {
+ OSGUserData* ud =
+ static_cast<OSGUserData*>(_transform->getChild(i)->getUserData());
+ if( ud )
+ // Ensure parent is cleared to prevent accessing released memory if an
+ // element somehow survives longer than his parent.
+ ud->element->_parent = 0;
+ }
}
//----------------------------------------------------------------------------
return boost::static_pointer_cast<Element>(_self.lock());
}
+ //----------------------------------------------------------------------------
+ ElementPtr Element::getParent()
+ {
+ return _parent ? _parent->getWeakPtr().lock() : ElementPtr();
+ }
+
//----------------------------------------------------------------------------
void Element::update(double dt)
{
- if( !_transform->getNodeMask() )
- // Don't do anything if element is hidden
+ if( !isVisible() )
return;
- if( _transform_dirty )
- {
- osg::Matrix m;
- for( size_t i = 0; i < _transform_types.size(); ++i )
- {
- // Skip unused indizes...
- if( _transform_types[i] == TT_NONE )
- continue;
+ // Trigger matrix update
+ getMatrix();
- SGPropertyNode* tf_node = _node->getChild("tf", i, true);
+ if( _attributes_dirty & SCISSOR_COORDS )
+ {
+ if( _scissor && _scissor->_coord_reference != GLOBAL )
+ _scissor->_parent_inverse = _transform->getInverseMatrix();
- // Build up the matrix representation of the current transform node
- osg::Matrix tf;
- switch( _transform_types[i] )
- {
- case TT_MATRIX:
- tf = osg::Matrix( tf_node->getDoubleValue("m[0]", 1),
- tf_node->getDoubleValue("m[1]", 0),
- 0,
- tf_node->getDoubleValue("m[6]", 0),
-
- tf_node->getDoubleValue("m[2]", 0),
- tf_node->getDoubleValue("m[3]", 1),
- 0,
- tf_node->getDoubleValue("m[7]", 0),
-
- 0,
- 0,
- 1,
- 0,
-
- tf_node->getDoubleValue("m[4]", 0),
- tf_node->getDoubleValue("m[5]", 0),
- 0,
- tf_node->getDoubleValue("m[8]", 1) );
- break;
- case TT_TRANSLATE:
- tf.makeTranslate( osg::Vec3f( tf_node->getDoubleValue("t[0]", 0),
- tf_node->getDoubleValue("t[1]", 0),
- 0 ) );
- break;
- case TT_ROTATE:
- tf.makeRotate( tf_node->getDoubleValue("rot", 0), 0, 0, 1 );
- break;
- case TT_SCALE:
- {
- float sx = tf_node->getDoubleValue("s[0]", 1);
- // sy defaults to sx...
- tf.makeScale( sx, tf_node->getDoubleValue("s[1]", sx), 1 );
- break;
- }
- default:
- break;
- }
- m.postMult( tf );
- }
- _transform->setMatrix(m);
- _transform_dirty = false;
+ _attributes_dirty &= ~SCISSOR_COORDS;
}
// Update bounding box on manual update (manual updates pass zero dt)
}
//----------------------------------------------------------------------------
- naRef Element::addEventListener(const nasal::CallContext& ctx)
+ bool Element::addEventListener( const std::string& type_str,
+ const EventListener& cb )
{
- const std::string type_str = ctx.requireArg<std::string>(0);
- naRef code = ctx.requireArg<naRef>(1);
-
SG_LOG
(
- SG_NASAL,
+ SG_GENERAL,
SG_INFO,
"addEventListener(" << _node->getPath() << ", " << type_str << ")"
);
Event::Type type = Event::strToType(type_str);
if( type == Event::UNKNOWN )
- naRuntimeError( ctx.c,
- "addEventListener: Unknown event type %s",
- type_str.c_str() );
+ {
+ SG_LOG( SG_GENERAL,
+ SG_WARN,
+ "addEventListener: Unknown event type " << type_str );
+ return false;
+ }
- _listener[ type ].push_back
- (
- boost::make_shared<EventListener>( code,
- _canvas.lock()->getSystemAdapter() )
- );
+ _listener[ type ].push_back(cb);
- return naNil();
+ return true;
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
bool Element::accept(EventVisitor& visitor)
{
- if( !_transform.valid() )
+ if( !isVisible() )
return false;
return visitor.apply(*this);
if( listeners == _listener.end() )
return false;
- BOOST_FOREACH(EventListenerPtr listener, listeners->second)
- listener->call(event);
+ BOOST_FOREACH(EventListener const& listener, listeners->second)
+ listener(event);
return true;
}
//----------------------------------------------------------------------------
- bool Element::hitBound( const osg::Vec2f& pos,
+ bool Element::hitBound( const osg::Vec2f& global_pos,
+ const osg::Vec2f& parent_pos,
const osg::Vec2f& local_pos ) const
{
- const osg::Vec3f pos3(pos, 0);
+ if( _scissor && !_scissor->contains(global_pos, parent_pos, local_pos) )
+ return false;
+
+ const osg::Vec3f pos3(parent_pos, 0);
// Drawables have a bounding box...
if( _drawable )
return _drawable->getBound().contains(osg::Vec3f(local_pos, 0));
- // ... for other elements, i.e. groups only a bounding sphere is available
else
- return _transform->getBound().contains(osg::Vec3f(pos, 0));
+ // ... for other elements, i.e. groups only a bounding sphere is available
+ return _transform->getBound().contains(osg::Vec3f(parent_pos, 0));
+ }
+
+
+ //----------------------------------------------------------------------------
+ void Element::setVisible(bool visible)
+ {
+ if( _transform.valid() )
+ // TODO check if we need another nodemask
+ _transform->setNodeMask(visible ? 0xffffffff : 0);
}
//----------------------------------------------------------------------------
bool Element::isVisible() const
{
- return _transform->getNodeMask() != 0;
+ return _transform.valid() && _transform->getNodeMask() != 0;
}
//----------------------------------------------------------------------------
return _transform.get();
}
+ //----------------------------------------------------------------------------
+ osg::Vec2f Element::posToLocal(const osg::Vec2f& pos) const
+ {
+ getMatrix();
+ const osg::Matrix& m = _transform->getInverseMatrix();
+ return osg::Vec2f
+ (
+ m(0, 0) * pos[0] + m(1, 0) * pos[1] + m(3, 0),
+ m(0, 1) * pos[0] + m(1, 1) * pos[1] + m(3, 1)
+ );
+ }
+
//----------------------------------------------------------------------------
void Element::childAdded(SGPropertyNode* parent, SGPropertyNode* child)
{
_transform_types.resize( child->getIndex() + 1 );
_transform_types[ child->getIndex() ] = TT_NONE;
- _transform_dirty = true;
+ _attributes_dirty |= TRANSFORM;
return;
}
else if( parent->getParent() == _node
else if( name == "s" )
type = TT_SCALE;
- _transform_dirty = true;
+ _attributes_dirty |= TRANSFORM;
return;
}
//----------------------------------------------------------------------------
void Element::childRemoved(SGPropertyNode* parent, SGPropertyNode* child)
{
- if( parent == _node && child->getNameString() == NAME_TRANSFORM )
+ if( parent == _node )
{
- if( !_transform.valid() )
- return;
-
- if( child->getIndex() >= static_cast<int>(_transform_types.size()) )
+ if( child->getNameString() == NAME_TRANSFORM )
{
- SG_LOG
- (
- SG_GENERAL,
- SG_WARN,
- "Element::childRemoved: unknown transform: " << child->getPath()
- );
- return;
- }
+ if( !_transform.valid() )
+ return;
- _transform_types[ child->getIndex() ] = TT_NONE;
+ if( child->getIndex() >= static_cast<int>(_transform_types.size()) )
+ {
+ SG_LOG
+ (
+ SG_GENERAL,
+ SG_WARN,
+ "Element::childRemoved: unknown transform: " << child->getPath()
+ );
+ return;
+ }
- while( !_transform_types.empty() && _transform_types.back() == TT_NONE )
- _transform_types.pop_back();
+ _transform_types[ child->getIndex() ] = TT_NONE;
- _transform_dirty = true;
- return;
+ while( !_transform_types.empty() && _transform_types.back() == TT_NONE )
+ _transform_types.pop_back();
+
+ _attributes_dirty |= TRANSFORM;
+ return;
+ }
+ else if( StyleInfo const* style = getStyleInfo(child->getNameString()) )
+ {
+ if( setStyle(getParentStyle(child), style) )
+ return;
+ }
}
childRemoved(child);
if( parent == _node )
{
const std::string& name = child->getNameString();
- if( setStyle(child) )
+ if( StyleInfo const* style_info = getStyleInfo(name) )
+ {
+ SGPropertyNode const* style = child;
+ if( isStyleEmpty(child) )
+ {
+ child->clearValue();
+ style = getParentStyle(child);
+ }
+ setStyle(style, style_info);
return;
+ }
else if( name == "update" )
return update(0);
- else if( name == "visible" )
- // TODO check if we need another nodemask
- return _transform->setNodeMask( child->getBoolValue() ? 0xffffffff : 0 );
else if( boost::starts_with(name, "blend-") )
return (void)(_attributes_dirty |= BLEND_FUNC);
}
else if( parent->getParent() == _node
&& parent->getNameString() == NAME_TRANSFORM )
{
- _transform_dirty = true;
+ _attributes_dirty |= TRANSFORM;
return;
}
}
//----------------------------------------------------------------------------
- bool Element::setStyle(const SGPropertyNode* child)
+ bool Element::setStyle( const SGPropertyNode* child,
+ const StyleInfo* style_info )
{
- StyleSetters::const_iterator setter =
- _style_setters.find(child->getNameString());
- if( setter == _style_setters.end() )
- return false;
-
- const StyleSetter* style_setter = &setter->second.setter;
- while( style_setter )
- {
- if( style_setter->func(*this, child) )
- return true;
- style_setter = style_setter->next;
- }
- return false;
+ return canApplyStyle(child) && setStyleImpl(child, style_info);
}
//----------------------------------------------------------------------------
if( clip.empty() || clip == "auto" )
{
getOrCreateStateSet()->removeAttribute(osg::StateAttribute::SCISSOR);
+ _scissor = 0;
return;
}
return;
}
- typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
- const boost::char_separator<char> del(", \t\npx");
-
- tokenizer tokens(clip.begin() + RECT.size(), clip.end() - 1, del);
+ const std::string sep(", \t\npx");
int comp = 0;
- int values[4];
- for( tokenizer::const_iterator tok = tokens.begin();
- tok != tokens.end() && comp < 4;
- ++tok, ++comp )
+ float values[4];
+
+ for(size_t pos = RECT.size(); comp < 4; ++comp)
{
- values[comp] = boost::lexical_cast<int>(*tok);
+ pos = clip.find_first_not_of(sep, pos);
+ if( pos == std::string::npos || pos == clip.size() - 1 )
+ break;
+
+ char *end = 0;
+ values[comp] = strtod(&clip[pos], &end);
+ if( end == &clip[pos] || !end )
+ break;
+
+ pos = end - &clip[0];
}
if( comp < 4 )
return;
}
- float scale_x = 1,
- scale_y = 1;
+ float width = values[1] - values[3],
+ height = values[2] - values[0];
- CanvasPtr canvas = _canvas.lock();
- if( canvas )
+ if( width < 0 || height < 0 )
{
- // The scissor rectangle isn't affected by any transformation, so we need
- // to convert to image/canvas coordinates on our selves.
- scale_x = canvas->getSizeX()
- / static_cast<float>(canvas->getViewWidth());
- scale_y = canvas->getSizeY()
- / static_cast<float>(canvas->getViewHeight());
+ SG_LOG(SG_GENERAL, SG_WARN, "Canvas: negative clip size: " << clip);
+ return;
}
- osg::Scissor* scissor = new osg::Scissor();
+ _scissor = new RelativeScissor();
// <top>, <right>, <bottom>, <left>
- scissor->x() = scale_x * values[3];
- scissor->y() = scale_y * values[0];
- scissor->width() = scale_x * (values[1] - values[3]);
- scissor->height() = scale_y * (values[2] - values[0]);
+ _scissor->x() = SGMiscf::roundToInt(values[3]);
+ _scissor->y() = SGMiscf::roundToInt(values[0]);
+ _scissor->width() = SGMiscf::roundToInt(width);
+ _scissor->height() = SGMiscf::roundToInt(height);
- if( canvas )
- // Canvas has y axis upside down
- scissor->y() = canvas->getSizeY() - scissor->y() - scissor->height();
+ getOrCreateStateSet()->setAttributeAndModes(_scissor);
- getOrCreateStateSet()->setAttributeAndModes(scissor);
+ SGPropertyNode* clip_frame = _node->getChild("clip-frame", 0);
+ if( clip_frame )
+ valueChanged(clip_frame);
+ }
+
+ //----------------------------------------------------------------------------
+ void Element::setClipFrame(ReferenceFrame rf)
+ {
+ if( _scissor )
+ {
+ _scissor->_coord_reference = rf;
+ _attributes_dirty |= SCISSOR_COORDS;
+ }
}
//----------------------------------------------------------------------------
osg::BoundingBox transformed;
const osg::BoundingBox& bb = _drawable->getBound();
for(int i = 0; i < 4; ++i)
- transformed.expandBy( m * bb.corner(i) );
+ transformed.expandBy( bb.corner(i) * m );
return transformed;
}
+ //----------------------------------------------------------------------------
+ osg::Matrix Element::getMatrix() const
+ {
+ if( !(_attributes_dirty & TRANSFORM) )
+ return _transform->getMatrix();
+
+ osg::Matrix m;
+ for( size_t i = 0; i < _transform_types.size(); ++i )
+ {
+ // Skip unused indizes...
+ if( _transform_types[i] == TT_NONE )
+ continue;
+
+ SGPropertyNode* tf_node = _node->getChild("tf", i, true);
+
+ // Build up the matrix representation of the current transform node
+ osg::Matrix tf;
+ switch( _transform_types[i] )
+ {
+ case TT_MATRIX:
+ tf = osg::Matrix( tf_node->getDoubleValue("m[0]", 1),
+ tf_node->getDoubleValue("m[1]", 0),
+ 0,
+ tf_node->getDoubleValue("m[6]", 0),
+
+ tf_node->getDoubleValue("m[2]", 0),
+ tf_node->getDoubleValue("m[3]", 1),
+ 0,
+ tf_node->getDoubleValue("m[7]", 0),
+
+ 0,
+ 0,
+ 1,
+ 0,
+
+ tf_node->getDoubleValue("m[4]", 0),
+ tf_node->getDoubleValue("m[5]", 0),
+ 0,
+ tf_node->getDoubleValue("m[8]", 1) );
+ break;
+ case TT_TRANSLATE:
+ tf.makeTranslate( osg::Vec3f( tf_node->getDoubleValue("t[0]", 0),
+ tf_node->getDoubleValue("t[1]", 0),
+ 0 ) );
+ break;
+ case TT_ROTATE:
+ tf.makeRotate( tf_node->getDoubleValue("rot", 0), 0, 0, 1 );
+ break;
+ case TT_SCALE:
+ {
+ float sx = tf_node->getDoubleValue("s[0]", 1);
+ // sy defaults to sx...
+ tf.makeScale( sx, tf_node->getDoubleValue("s[1]", sx), 1 );
+ break;
+ }
+ default:
+ break;
+ }
+ m.postMult( tf );
+ }
+ _transform->setMatrix(m);
+ _attributes_dirty &= ~TRANSFORM;
+ _attributes_dirty |= SCISSOR_COORDS;
+
+ return m;
+ }
+
//----------------------------------------------------------------------------
Element::StyleSetters Element::_style_setters;
_canvas( canvas ),
_parent( parent ),
_attributes_dirty( 0 ),
- _transform_dirty( false ),
_transform( new osg::MatrixTransform ),
_style( parent_style ),
+ _scissor( 0 ),
_drawable( 0 )
{
+ staticInit();
+
SG_LOG
(
SG_GL,
"New canvas element " << node->getPath()
);
- if( !isInit<Element>() )
+ // Ensure elements are drawn in order they appear in the element tree
+ _transform->getOrCreateStateSet()
+ ->setRenderBinDetails
+ (
+ 0,
+ "PreOrderBin",
+ osg::StateSet::OVERRIDE_RENDERBIN_DETAILS
+ );
+ }
+
+ //----------------------------------------------------------------------------
+ void Element::staticInit()
+ {
+ if( isInit<Element>() )
+ return;
+
+ addStyle("clip", "", &Element::setClip, false);
+ addStyle("clip-frame", "", &Element::setClipFrame, false);
+ addStyle("visible", "", &Element::setVisible, false);
+ }
+
+ //----------------------------------------------------------------------------
+ bool Element::isStyleEmpty(const SGPropertyNode* child) const
+ {
+ return !child
+ || simgear::strutils::strip(child->getStringValue()).empty();
+ }
+
+ //----------------------------------------------------------------------------
+ bool Element::canApplyStyle(const SGPropertyNode* child) const
+ {
+ if( _node == child->getParent() )
+ return true;
+
+ // Parent values do not override if element has own value
+ return isStyleEmpty( _node->getChild(child->getName()) );
+ }
+
+ //----------------------------------------------------------------------------
+ bool Element::setStyleImpl( const SGPropertyNode* child,
+ const StyleInfo* style_info )
+ {
+ const StyleSetter* style_setter = style_info
+ ? &style_info->setter
+ : getStyleSetter(child->getNameString());
+ while( style_setter )
+ {
+ if( style_setter->func(*this, child) )
+ return true;
+ style_setter = style_setter->next;
+ }
+ return false;
+ }
+
+ //----------------------------------------------------------------------------
+ const Element::StyleInfo*
+ Element::getStyleInfo(const std::string& name) const
+ {
+ StyleSetters::const_iterator setter = _style_setters.find(name);
+ if( setter == _style_setters.end() )
+ return 0;
+
+ return &setter->second;
+ }
+
+ //----------------------------------------------------------------------------
+ const Element::StyleSetter*
+ Element::getStyleSetter(const std::string& name) const
+ {
+ const StyleInfo* info = getStyleInfo(name);
+ return info ? &info->setter : 0;
+ }
+
+ //----------------------------------------------------------------------------
+ const SGPropertyNode*
+ Element::getParentStyle(const SGPropertyNode* child) const
+ {
+ // Try to get value from parent...
+ if( _parent )
{
- addStyle("clip", "", &Element::setClip);
+ Style::const_iterator style =
+ _parent->_style.find(child->getNameString());
+ if( style != _parent->_style.end() )
+ return style->second;
}
+
+ // ...or reset to default if none is available
+ return child; // TODO somehow get default value for each style?
}
//----------------------------------------------------------------------------
projects / simgear.git / blobdiff