struct SF::VideoMode

Overview

VideoMode defines a video mode (width, height, bpp)

A video mode is defined by a width and a height (in pixels) and a depth (in bits per pixel). Video modes are used to setup windows (SF::Window) at creation time.

The main usage of video modes is for fullscreen mode: indeed you must use one of the valid video modes allowed by the OS (which are defined by what the monitor and the graphics card support), otherwise your window creation will just fail.

SF::VideoMode provides a static function for retrieving the list of all the video modes supported by the system: .fullscreen_modes().

A custom video mode can also be checked directly for fullscreen compatibility with its #valid?() function.

Additionally, SF::VideoMode provides a static function to get the mode currently used by the desktop: .desktop_mode(). This allows to build windows with the same size or pixel depth as the current resolution.

Usage example:

# Display the list of all the video modes available for fullscreen
SF::VideoMode.fullscreen_modes.each do |mode|
  puts "Mode ##{i}: #{mode.width}x#{mode.height} - #{mode.bits_per_pixel} bpp"
end

# Create a window with the same pixel depth as the desktop
desktop = SF::VideoMode.desktop_mode
window.create(SF::VideoMode.new(1024, 768, desktop.bits_per_pixel), "SFML window")

Defined in:

window/obj.cr

Constructors

Class Method Summary

Instance Method Summary

Constructor Detail

def self.desktop_mode : VideoMode #

Get the current desktop video mode

Returns: Current desktop video mode


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def self.new(width : Int, height : Int, bits_per_pixel : Int = 32) #

Construct the video mode with its attributes

  • width - Width in pixels
  • height - Height in pixels
  • bits_per_pixel - Pixel depths in bits per pixel

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def self.new #

Default constructor

This constructors initializes all members to 0.


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Class Method Detail

def self.fullscreen_modes : Array(VideoMode) #

Retrieve all the video modes supported in fullscreen mode

When creating a fullscreen window, the video mode is restricted to be compatible with what the graphics driver and monitor support. This function returns the complete list of all video modes that can be used in fullscreen mode. The returned array is sorted from best to worst, so that the first element will always give the best mode (higher width, height and bits-per-pixel).

Returns: Array containing all the supported fullscreen modes


[View source]

Instance Method Detail

def !=(right : VideoMode) : Bool #

Overload of != operator to compare two video modes

  • left - Left operand (a video mode)
  • right - Right operand (a video mode)

Returns: True if modes are different


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def <(right : VideoMode) : Bool #

Overload of < operator to compare video modes

  • left - Left operand (a video mode)
  • right - Right operand (a video mode)

Returns: True if left is lesser than right


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def <=(right : VideoMode) : Bool #

Overload of <= operator to compare video modes

  • left - Left operand (a video mode)
  • right - Right operand (a video mode)

Returns: True if left is lesser or equal than right


[View source]
def ==(right : VideoMode) : Bool #

Overload of == operator to compare two video modes

  • left - Left operand (a video mode)
  • right - Right operand (a video mode)

Returns: True if modes are equal


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def >(right : VideoMode) : Bool #

Overload of > operator to compare video modes

  • left - Left operand (a video mode)
  • right - Right operand (a video mode)

Returns: True if left is greater than right


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def >=(right : VideoMode) : Bool #

Overload of >= operator to compare video modes

  • left - Left operand (a video mode)
  • right - Right operand (a video mode)

Returns: True if left is greater or equal than right


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def bits_per_pixel : UInt32 #

Video mode pixel depth, in bits per pixels


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def bits_per_pixel=(bits_per_pixel : Int) #

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def dup : VideoMode #
Description copied from struct Value

Returns a shallow copy of this object.

Because Value is a value type, this method returns self, which already involves a shallow copy of this object because value types are passed by value.


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def height : UInt32 #

Video mode height, in pixels


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def height=(height : Int) #

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def valid? : Bool #

Tell whether or not the video mode is valid

The validity of video modes is only relevant when using fullscreen windows; otherwise any video mode can be used with no restriction.

Returns: True if the video mode is valid for fullscreen mode


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def width : UInt32 #

Video mode width, in pixels


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def width=(width : Int) #

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