Add classes for storing and applying bindings to controls

[libs/gui.git] / source / input / bindings.cpp

diff --git a/source/input/bindings.cpp b/source/input/bindings.cpp
new file mode 100644 (file)
index 0000000..85b5941
--- /dev/null
+++ b/source/input/bindings.cpp
@@ -0,0 +1,142 @@
+#include <msp/strings/format.h>
+#include "bindings.h"
+#include "controlscheme.h"
+
+using namespace std;
+
+namespace Msp {
+namespace Input {
+
+vector<Device *> Bindings::resolve_devices(Device &dev) const
+{
+       vector<Device *> resolved_devs;
+       resolved_devs.reserve(devices.size());
+       for(vector<DeviceRef>::const_iterator i=devices.begin(); i!=devices.end(); ++i)
+       {
+               if(i->type!=UNSPECIFIED)
+                       resolved_devs.push_back(dev.find_subdevice(i->type));
+               else if(!i->name.empty())
+                       resolved_devs.push_back(dev.find_subdevice(i->name));
+               else
+                       resolved_devs.push_back(0);
+       }
+       return resolved_devs;
+}
+
+bool Bindings::is_compatible(Device &dev) const
+{
+       vector<Device *> resolved_devs = resolve_devices(dev);
+       for(vector<Device *>::const_iterator i=resolved_devs.begin(); i!=resolved_devs.end(); ++i)
+               if(!*i)
+                       return false;
+       return true;
+}
+
+bool Bindings::apply_to(ControlScheme &control_scheme, Device &dev)
+{
+       vector<Device *> resolved_devs = resolve_devices(dev);
+       bool applied = false;
+       for(vector<Binding>::const_iterator i=bindings.begin(); i!=bindings.end(); ++i)
+       {
+               Control *ctrl = control_scheme.find(i->control);
+               Device *bdev = (i->device<resolved_devs.size() ? resolved_devs[i->device] : 0);
+               if(ctrl && bdev)
+               {
+                       ctrl->set_source(*bdev, i->type, i->index);
+                       applied = true;
+               }
+       }
+
+       return applied;
+}
+
+
+DataFile::Loader::ActionMap Bindings::Loader::shared_actions;
+
+Bindings::Loader::Loader(Bindings &b):
+       ObjectLoader<Bindings>(b)
+{
+       set_actions(shared_actions);
+}
+
+void Bindings::Loader::init_actions()
+{
+       add("binding", &Loader::binding);
+       add("device", &Loader::device_type);
+       add("device", &Loader::device_name);
+}
+
+void Bindings::Loader::binding(const string &c)
+{
+       Binding bind;
+       bind.control = c;
+       load_sub(bind);
+       obj.bindings.push_back(bind);
+}
+
+void Bindings::Loader::device_type(DeviceType t)
+{
+       DeviceRef dev;
+       dev.type = t;
+       obj.devices.push_back(dev);
+}
+
+void Bindings::Loader::device_name(const string &n)
+{
+       DeviceRef dev;
+       dev.name = n;
+       obj.devices.push_back(dev);
+}
+
+
+DataFile::Loader::ActionMap Bindings::Binding::Loader::shared_actions;
+
+Bindings::Binding::Loader::Loader(Binding &b):
+       ObjectLoader<Binding>(b)
+{
+       set_actions(shared_actions);
+}
+
+void Bindings::Binding::Loader::init_actions()
+{
+       add("axis", &Loader::axis);
+       add("button", &Loader::button);
+       add("device", &Binding::device);
+       add("key", &Loader::key);
+}
+
+void Bindings::Binding::Loader::axis(unsigned a, AxisSide s)
+{
+       obj.type = (s==NEGATIVE ? AXIS_NEG : AXIS_POS);
+       obj.index = a;
+}
+
+void Bindings::Binding::Loader::button(unsigned b)
+{
+       obj.type = BUTTON;
+       obj.index = b;
+}
+
+
+void operator>>(const LexicalConverter &conv, Bindings::AxisSide &side)
+{
+       if(conv.get()=="POSITIVE")
+               side = Bindings::POSITIVE;
+       else if(conv.get()=="NEGATIVE")
+               side = Bindings::NEGATIVE;
+       else
+               throw lexical_error(format("conversion of '%s' to AxisSide", conv.get()));
+}
+
+void operator<<(LexicalConverter &conv, Bindings::AxisSide side)
+{
+       switch(side)
+       {
+       case Bindings::POSITIVE: conv.result("POSITIVE"); break;
+       case Bindings::NEGATIVE: conv.result("NEGATIVE"); break;
+       default: conv.result(format("AxisSide(%#x)", static_cast<int>(side)));
+       }
+}
+
+} // namespace Input
+} // namespace Msp;