12-20-2011
Keyboard & Mouse are the de facto nowadays.
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LEARN ABOUT DEBIAN
sdl::cursor
pods::SDL::Cursor(3pm) User Contributed Perl Documentation pods::SDL::Cursor(3pm)
NAME
SDL::Cursor - Mouse cursor structure
CATEGORY
Core, Mouse, Structure
SYNOPSIS
my $cursor = SDL::Cursor->new(
@data,
@mask,
$width,
$height,
$hotspot_left,
$hotspot_top
);
SDL::Mouse::set_cursor($cursor);
DESCRIPTION
The "SDL::Cursor" module handles mouse cursors, and allows the developer to use custom-made cursors. Note that cursors can only be in
black and white.
METHODS
new
my $cursor = SDL::Cursor->new(
@data, @mask, $width, $height, $hotspot_left, $hotspot_top
);
Create a cursor using the specified data and mask (in MSB format). The cursor is created in black and white according to the following:
Data / Mask Resulting pixel on screen
0 / 1 White
1 / 1 Black
0 / 0 Transparent
1 / 0 Inverted color if possible, black if not.
If you want to have color cursor, then this function is not for you. Instead, you should hide the cursor with
"SDL::Mouse::show_cursor(SDL_DISABLE)". Then in your main loop, when you draw graphics, draw a "SDL::Surface" at the location of the mouse
cursor.
Example:
use SDL;
use SDL::Video;
use SDL::Mouse;
use SDL::Cursor;
SDL::init(SDL_INIT_VIDEO);
SDL::Video::set_video_mode(640, 480, 16, SDL_SWSURFACE);
my @data = (
0b00000000,
0b00111100,
0b01111110,
0b01111110,
0b01111110,
0b01111110,
0b00111100,
0b00000000
);
my @mask = (
0b00111100,
0b01111110,
0b11100111,
0b11000011,
0b11000011,
0b11100111,
0b01111110,
0b00111100
);
my $cursor = SDL::Cursor->new(@data, @mask, 8, 8, 0, 0);
sleep(1);
SDL::Mouse::set_cursor($cursor);
sleep(5);
The width of cursors work in groups of 8. If the width is above 8, twice the amount of elements in @data and @mask are required. If the
width is above 16, three times are required, and so on. For example, if you wanted a 9 pixel crosshair you might do the following:
my @data = (
0b00001000,0b00000000,
0b00001000,0b00000000,
0b00001000,0b00000000,
0b00001000,0b00000000,
0b11111111,0b10000000,
0b00001000,0b00000000,
0b00001000,0b00000000,
0b00001000,0b00000000,
0b00001000,0b00000000,
);
my @mask = @data;
my $cursor = SDL::Cursor->new(@data, @mask, 9, 9, 4, 4);
The hotspot is offset by 4 pixels because a crosshair clicks from the center instead of the top left.
AUTHORS
See "AUTHORS" in SDL.
SEE ALSO
perl SDL::Mouse
perl v5.14.2 2012-05-28 pods::SDL::Cursor(3pm)