Class: Glfw::Monitor

Inherits:
Data
  • Object
show all
Defined in:
lib/glfw3/monitor.rb,
ext/glfw3/glfw3.c

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.monitors ⇒ Object

Gets an array of all currently connected monitors.

call-seq:

monitors -> [Glfw::Monitor, ...]

Wraps glfwGetMonitors.



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# File 'ext/glfw3/glfw3.c', line 155

static VALUE rb_glfw_get_monitors(VALUE self)
{
  long monitor_index = 0;
  int num_monitors = 0;
  GLFWmonitor **monitors = glfwGetMonitors(&num_monitors);
  VALUE monitors_out = Qnil;

  if (monitors) {
    monitors_out = rb_ary_new();
    for (; monitor_index < num_monitors; ++monitor_index) {
      VALUE monitor = Data_Wrap_Struct(s_glfw_monitor_klass, 0, 0, monitors[monitor_index]);
      rb_obj_call_init(monitor, 0, 0);
      rb_ary_push(monitors_out, monitor);
    }
  }
  return monitors_out;
}

.primary_monitor ⇒ Object

Gets the primary monitor.

call-seq:

primary_monitor -> Glfw::Monitor

Wraps glfwGetPrimaryMonitor.



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# File 'ext/glfw3/glfw3.c', line 183

static VALUE rb_glfw_get_primary_monitor(VALUE self)
{
  GLFWmonitor *monitor = glfwGetPrimaryMonitor();
  VALUE rb_monitor = Qnil;
  if (monitor != NULL) {
    rb_monitor = Data_Wrap_Struct(s_glfw_monitor_klass, 0, 0, monitor);
    rb_obj_call_init(rb_monitor, 0, 0);
  }
  return rb_monitor;
}

Instance Method Details

#get_gamma_ramp ⇒ Object Also known as: gamma_ramp

Gets the monitor’s gamma ramp and returns it as a hash of its red, green, and blue gamma ramps. By default, this might be equal to ‘{ :red => [], :green => [], :blue => []}`. Ramp values are in the range of 0 through 65535, or the 0 through USHRT_MAX (in C).

call-seq:

  get_gamma_ramp -> { :red => [...], :green => [...], :blue => [...] } or nil
  gamma_ramp = -> hash or nil

Wraps glfwGetGammaRamp.



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# File 'ext/glfw3/glfw3.c', line 447

static VALUE rb_monitor_get_gamma_ramp(VALUE self)
{
  GLFWmonitor *monitor = NULL;
  const GLFWgammaramp *ramp = NULL;
  VALUE rb_gamma_hash, rb_red, rb_green, rb_blue;
  unsigned int ramp_index;
  unsigned int ramp_len;

  Data_Get_Struct(self, GLFWmonitor, monitor);
  ramp = glfwGetGammaRamp(monitor);

  if (ramp == NULL) {
    return Qnil;
  }
  ramp_len = ramp->size;

  rb_gamma_hash  = rb_hash_new();
  rb_red   = rb_ary_new();
  rb_green = rb_ary_new();
  rb_blue  = rb_ary_new();

  for (ramp_index = 0; ramp_index < ramp_len; ++ramp_index) {
    rb_ary_push(rb_red, INT2NUM(ramp->red[ramp_index]));
    rb_ary_push(rb_green, INT2NUM(ramp->green[ramp_index]));
    rb_ary_push(rb_blue, INT2NUM(ramp->blue[ramp_index]));
  }

  rb_hash_aset(rb_gamma_hash, ID2SYM(kRB_RED), rb_red);
  rb_hash_aset(rb_gamma_hash, ID2SYM(kRB_GREEN), rb_green);
  rb_hash_aset(rb_gamma_hash, ID2SYM(kRB_BLUE), rb_blue);

  return rb_gamma_hash;
}

#name ⇒ Object

Gets the name of the monitor.

call-seq:

name -> String

Wraps glfwGetMonitorName.



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# File 'ext/glfw3/glfw3.c', line 244

static VALUE rb_monitor_name(VALUE self)
{
  GLFWmonitor *monitor = NULL;
  const char *monitor_name = NULL;
  Data_Get_Struct(self, GLFWmonitor, monitor);
  monitor_name = glfwGetMonitorName(monitor);
  return monitor_name ? rb_str_new2(monitor_name) : Qnil;
}

#physical_size ⇒ Object

Gets the physical size of the monitor.

call-seq:

physical_size -> [width, height]

Wraps glfwGetMonitorPhysicalSize.



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# File 'ext/glfw3/glfw3.c', line 224

static VALUE rb_monitor_physical_size(VALUE self)
{
  GLFWmonitor *monitor = NULL;
  int width = 0;
  int height = 0;
  Data_Get_Struct(self, GLFWmonitor, monitor);
  glfwGetMonitorPhysicalSize(monitor, &width, &height);
  return rb_ary_new3(2, INT2FIX(width), INT2FIX(height));
}

#position ⇒ Object

Gets the monitor’s position in screen-space.

call-seq:

position -> [x, y]

Wraps glfwGetMonitorPos.



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# File 'ext/glfw3/glfw3.c', line 204

static VALUE rb_monitor_position(VALUE self)
{
  GLFWmonitor *monitor = NULL;
  int xpos = 0;
  int ypos = 0;
  Data_Get_Struct(self, GLFWmonitor, monitor);
  glfwGetMonitorPos(monitor, &xpos, &ypos);
  return rb_ary_new3(2, INT2FIX(xpos), INT2FIX(ypos));
}

#set_gamma(gamma) ⇒ Object

Sets the monitor’s gamma ramp to a 256-element ramp generated by the given exponent.

call-seq:

set_gamma(gamma) -> self

Wraps glfwSetGamma.



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# File 'ext/glfw3/glfw3.c', line 425

static VALUE rb_monitor_set_gamma(VALUE self, VALUE gamma)
{
  GLFWmonitor *monitor = NULL;
  Data_Get_Struct(self, GLFWmonitor, monitor);
  glfwSetGamma(monitor, (float)NUM2DBL(gamma));
  return self;
}

#set_gamma_ramp(ramp_hash) ⇒ Object Also known as: gamma_ramp=

Sets the monitor’s gamma ramp with the ramps provided in the ramp hash. The ramp hash must have arrays for :red, :green, and :blue keys. The arrays should be the same length, otherwise the shortest array length will be used.

Gamma ramps should be in the range of an usngiend short, so 0 through 65535 or USHRT_MAX.

For example, to set a linear gamma ramp that is half as intense as what is likely your default:

ramp = (0 ... 32768).step(128).to_a
monitor.set_gamma_ramp({ :red => ramp, :green => ramp, :blue => ramp })

call-seq:

   set_gamma_ramp(ramp) -> self
   gamma_ramp = ramp -> self

Wraps glfwSetGammaRamp.



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# File 'ext/glfw3/glfw3.c', line 504

static VALUE rb_monitor_set_gamma_ramp(VALUE self, VALUE ramp_hash)
{
  GLFWmonitor *monitor = NULL;
  GLFWgammaramp ramp;
  VALUE rb_red, rb_green, rb_blue;
  unsigned int ramp_index = 0;
  unsigned int ramp_len = 0;
  unsigned short *ramp_buffer = NULL;

  if (!Q_IS_A(ramp_hash, rb_cHash)) {
    rb_raise(rb_eArgError, "ramp_hash must be a Hash");
  }

  Data_Get_Struct(self, GLFWmonitor, monitor);

  rb_red = rb_hash_aref(ramp_hash, ID2SYM(kRB_RED));
  rb_green = rb_hash_aref(ramp_hash, ID2SYM(kRB_GREEN));
  rb_blue = rb_hash_aref(ramp_hash, ID2SYM(kRB_BLUE));

  if (!(Q_IS_A(rb_red, rb_cArray) && Q_IS_A(rb_green, rb_cArray) && Q_IS_A(rb_blue, rb_cArray))) {
    rb_raise(rb_eArgError, "Ramp Hash must contain :red, :green, and :blue arrays");
  }

  /* NOTE: loses precision */
  ramp_len = (unsigned int)RARRAY_LEN(rb_red);
  if (RARRAY_LEN(rb_green) != ramp_len || RARRAY_LEN(rb_blue) != ramp_len) {
    rb_raise(rb_eArgError, "All ramps must have the same length");
  }

  ramp_buffer = ALLOC_N(unsigned short, 3 * ramp_len);
  ramp.red = ramp_buffer;
  ramp.green = &ramp_buffer[ramp_len];
  ramp.blue = &ramp_buffer[ramp_len * 2];

  for (; ramp_index < ramp_len; ++ramp_index) {
    ramp.red[ramp_index] = (unsigned short)NUM2UINT(rb_ary_entry(rb_red, ramp_index));
    ramp.green[ramp_index] = (unsigned short)NUM2UINT(rb_ary_entry(rb_green, ramp_index));
    ramp.blue[ramp_index] = (unsigned short)NUM2UINT(rb_ary_entry(rb_blue, ramp_index));
  }

  ramp.size = ramp_len;

  glfwSetGammaRamp(monitor, &ramp);

  free(ramp_buffer);

  return self;
}

#video_mode ⇒ Object

Gets the monitor’s current video mode.

call-seq:

video_mode -> Glfw::VideoMode

Wraps glfwGetVideoMode.



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# File 'ext/glfw3/glfw3.c', line 401

static VALUE rb_monitor_video_mode(VALUE self)
{
  GLFWmonitor *monitor = NULL;
  GLFWvidmode *mode = NULL;
  VALUE rb_mode = Qnil;
  Data_Get_Struct(self, GLFWmonitor, monitor);
  mode = ALLOC(GLFWvidmode);
  *mode = *glfwGetVideoMode(monitor);
  rb_mode = Data_Wrap_Struct(s_glfw_videomode_klass, 0, free, mode);
  rb_obj_call_init(rb_mode, 0, 0);
  return rb_mode;
}

#video_modes ⇒ Object

Gets an array of all video modes associated with the monitor, sorted ascending first by color depth and then the video mode’s area (width x height).

call-seq:

video_mode -> [Glfw::VideoMode, ...]

Wraps glfwGetVideoModes.



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# File 'ext/glfw3/glfw3.c', line 367

static VALUE rb_monitor_video_modes(VALUE self)
{
  GLFWmonitor *monitor = NULL;
  const GLFWvidmode *modes = NULL;
  VALUE rb_modes = Qnil;
  int num_modes = 0;
  int mode_index = 0;
  VALUE rb_mode = Qnil;
  GLFWvidmode *mode = NULL;

  Data_Get_Struct(self, GLFWmonitor, monitor);
  rb_modes = rb_ary_new();
  modes = glfwGetVideoModes(monitor, &num_modes);

  for (; mode_index < num_modes; ++mode_index) {
    mode = ALLOC(GLFWvidmode);
    *mode = modes[mode_index];
    rb_mode = Data_Wrap_Struct(s_glfw_videomode_klass, 0, free, mode);
    rb_obj_call_init(rb_mode, 0, 0);
    rb_ary_push(rb_modes, rb_mode);
  }
  return rb_modes;
}