Class: SDL2::Mouse::State
- Inherits:
-
Object
- Object
- SDL2::Mouse::State
- Defined in:
- mouse.c,
mouse.c
Overview
This class represents mouse stetes.
You can get a mouse state with state.
Instance Attribute Summary collapse
-
#button_bits ⇒ Integer
readonly
button bits.
-
#x ⇒ Integer
readonly
the x coordinate of the mouse cursor.
-
#y ⇒ Integer
readonly
the y coordinate of the mouse cursor.
Instance Method Summary collapse
-
#inspect ⇒ String
Inspection string.
-
#pressed?(index) ⇒ Boolean
Return true a mouse button is pressed.
Instance Attribute Details
#button_bits ⇒ Integer (readonly)
button bits
#x ⇒ Integer (readonly)
the x coordinate of the mouse cursor.
For SDL2::Mouse.state, this attribute means the x coordinate relative to the window. For SDL2::Mouse.relative_state, this attribute means the x coordinate relative to the previous call of SDL2::Mouse.relative_state.
#y ⇒ Integer (readonly)
the y coordinate of the mouse cursor
For SDL2::Mouse.state, this attribute means the y coordinate relative to the window. For SDL2::Mouse.relative_state, this attribute means the y coordinate relative to the previous call of SDL2::Mouse.relative_state.
Instance Method Details
#inspect ⇒ String
Returns inspection string
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# File 'mouse.c', line 239
static VALUE State_inspect(VALUE self)
{
int i;
Uint32 buttons = NUM2UINT(rb_iv_get(self, "@button_bits"));
VALUE pressed = rb_ary_new();
VALUE string_for_pressed;
for (i=1; i<=32; ++i)
if (buttons & SDL_BUTTON(i))
rb_ary_push(pressed, rb_sprintf("%d", i));
string_for_pressed = rb_ary_join(pressed, rb_str_new2(" "));
return rb_sprintf("<%s:%p x=%d y=%d pressed=[%s]>",
rb_obj_classname(self), (void*)self,
NUM2INT(rb_iv_get(self, "@x")), NUM2INT(rb_iv_get(self, "@y")),
StringValueCStr(string_for_pressed));
}
|
#pressed?(index) ⇒ Boolean
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# File 'mouse.c', line 230
static VALUE State_pressed_p(VALUE self, VALUE index)
{
int idx = NUM2INT(index);
if (idx < 0 || idx >= 32)
rb_raise(rb_eArgError, "button index out of range (%d for 1..32)", idx);
return INT2BOOL(NUM2UINT(rb_iv_get(self, "@button_bits")) & SDL_BUTTON(idx));
}
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