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-rw-r--r--libgo/go/exp/gui/gui.go57
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diff --git a/libgo/go/exp/gui/gui.go b/libgo/go/exp/gui/gui.go
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--- a/libgo/go/exp/gui/gui.go
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-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package gui defines a basic graphical user interface programming model.
-package gui
-
-import (
- "image"
- "image/draw"
-)
-
-// A Window represents a single graphics window.
-type Window interface {
- // Screen returns an editable Image for the window.
- Screen() draw.Image
- // FlushImage flushes changes made to Screen() back to screen.
- FlushImage()
- // EventChan returns a channel carrying UI events such as key presses,
- // mouse movements and window resizes.
- EventChan() <-chan interface{}
- // Close closes the window.
- Close() error
-}
-
-// A KeyEvent is sent for a key press or release.
-type KeyEvent struct {
- // The value k represents key k being pressed.
- // The value -k represents key k being released.
- // The specific set of key values is not specified,
- // but ordinary characters represent themselves.
- Key int
-}
-
-// A MouseEvent is sent for a button press or release or for a mouse movement.
-type MouseEvent struct {
- // Buttons is a bit mask of buttons: 1<<0 is left, 1<<1 middle, 1<<2 right.
- // It represents button state and not necessarily the state delta: bit 0
- // being on means that the left mouse button is down, but does not imply
- // that the same button was up in the previous MouseEvent.
- Buttons int
- // Loc is the location of the cursor.
- Loc image.Point
- // Nsec is the event's timestamp.
- Nsec int64
-}
-
-// A ConfigEvent is sent each time the window's color model or size changes.
-// The client should respond by calling Window.Screen to obtain a new image.
-type ConfigEvent struct {
- Config image.Config
-}
-
-// An ErrEvent is sent when an error occurs.
-type ErrEvent struct {
- Err error
-}
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