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Graphics.HGL.Window | Portability | non-portable (requires concurrency) | Stability | provisional | Maintainer | libraries@haskell.org |
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Description |
Windows in a simple graphics library.
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Synopsis |
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Windows
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Title of a window.
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How to draw in a window.
| Constructors | DoubleBuffered | use a double buffer to reduce flicker.
You should probably use this for animations.
| Unbuffered | draw directly to the window.
This runs slightly faster but is more prone
to flicker.
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:: Title | title of the window
| -> Maybe Point | the optional initial position of a window
| -> Size | initial size of the window
| -> RedrawMode | how to display a graphic on the window
| -> Maybe Time | the time between ticks (in milliseconds) of an
optional timer associated with the window
| -> IO Window | | General window creation.
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The position of the top left corner of the window on the screen,
and the size of the window.
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Close the window.
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Drawing in a window
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Set the current drawing in a window.
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Get the current drawing in a window.
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Update the drawing for a window.
Note that this does not force a redraw.
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Events in a window
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A user interface event.
Notes:
- Programmers should assume that the Event datatype will be
extended in the not-too-distant future and that individual events
may change slightly. As a minimum, you should add a "match anything"
alternative to any function which pattern matches against Events.
- X11 systems typically have three button mice. Button 1 is used as the
left button, button 3 as the right button and button 2 (the middle
button) is ignored.
| Constructors | Char | a properly translated character, sent after
a key press.
| char :: Char | the character represented by a key combination
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| Key | occurs when a key was pressed or released.
| keysym :: Key | representation of the keyboard keys pressed
| isDown :: Bool | if True, the key was pressed;
otherwise it was released
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| Button | occurs when a mouse button is pressed or released.
| pt :: Point | the position of the mouse cursor
| isLeft :: Bool | if True, it was the left button
| isDown :: Bool | if True, the key was pressed;
otherwise it was released
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| MouseMove | occurs when the mouse is moved inside the window.
| pt :: Point | the position of the mouse cursor
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| Resize | occurs when the window is resized.
| Closed | occurs when the window is closed.
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Wait for the next event on the given window.
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Check for a pending event on the given window.
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Timer ticks
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Timers that tick at regular intervals are set up by openWindowEx.
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Wait for the next tick event from the timer on the given window.
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Time in milliseconds since some arbitrary epoch.
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Produced by Haddock version 2.6.1 |