Draws a sprite animation. 更多...
| import 语句： | import QtQuick 2.12 |
| 继承： | Item |
AnimatedSprite provides rendering and control over animations which are provided as multiple frames in the same image file. You can play it at a fixed speed, at the frame rate of your display, or manually advance and control the progress.
Consider the following sprite sheet:
It can be divided up into four frames:
To play each of these frames at a speed of 500 milliseconds per frame, the following code can be used:
| Code | 结果 |
|---|---|
AnimatedSprite {
source: "loading.png"
frameWidth: 64
frameHeight: 64
frameCount: 4
frameDuration: 500
}
|
By default, the frames are interpolated (blended together) to make the animation appear smoother. To disable this, set
interpolate
to
false
:
| Code | 结果 |
|---|---|
AnimatedSprite {
source: "loading.png"
frameWidth: 64
frameHeight: 64
frameCount: 4
frameDuration: 500
interpolate: false
}
|
|
To control how AnimatedSprite responds to being scaled, use the smooth 特性。
Note that unlike SpriteSequence ， AnimatedSprite type does not use Sprite to define multiple animations, but instead encapsulates a single animation itself.
另请参阅 子画面动画 .
|
currentFrame : int |
When paused, the current frame can be advanced manually by setting this property or calling advance() .
|
frameCount : int |
Number of frames in this AnimatedSprite .
|
frameDuration : int |
Duration of each frame of the animation in milliseconds. Values less than or equal to
0
are invalid.
若
frameRate
is valid, it will be used to calculate the duration of the frames. If not, and frameDuration is valid,
frameDuration
会被使用。
Changing this parameter will restart the animation.
|
frameHeight : int |
Height of a single frame in this AnimatedSprite .
May be omitted if it is the only sprite in the file.
Frames per second to show in the animation. Values less than or equal to
0
are invalid.
若
frameRate
is valid, it will be used to calculate the duration of the frames. If not, and
frameDuration
is valid,
frameDuration
会被使用。
Changing this parameter will restart the animation.
|
frameSync : bool |
若
true
, the animation will have no duration. Instead, the animation will advance one frame each time a frame is rendered to the screen. This synchronizes it with the painting rate as opposed to elapsed time.
If frameSync is set to true, it overrides both frameRate and frameDuration .
默认为
false
.
Changing this parameter will restart the animation.
|
frameWidth : int |
Width of a single frame in this AnimatedSprite .
May be omitted if it is the only sprite in the file.
|
frameX : int |
The X coordinate in the image file of the first frame of the AnimatedSprite .
May be omitted if the first frame starts in the upper left corner of the file.
|
frameY : int |
The Y coordinate in the image file of the first frame of the AnimatedSprite .
May be omitted if the first frame starts in the upper left corner of the file.
|
interpolate : bool |
If true, interpolation will occur between sprite frames to make the animation appear smoother.
默认为 true。
|
loops : int |
After playing the animation this many times, the animation will automatically stop. Negative values are invalid.
If this is set to
AnimatedSprite.Infinite
the animation will not stop playing on its own.
默认为
AnimatedSprite.Infinite
|
paused : bool |
When paused, the current frame can be advanced manually.
默认为
false
.
|
reverse : bool |
若
true
, the animation will be played in reverse.
默认为
false
.
|
running : bool |
Whether the sprite is animating or not.
默认为 true
|
source : url |
The image source for the animation.
若 frameHeight and frameWidth are not specified, it is assumed to be a single long row of square frames. Otherwise, it can be multiple contiguous rows or rectangluar frames, when one row runs out the next will be used.
若 frameX and frameY are specified, the row of frames will be taken with that x/y coordinate as the upper left corner.
This signal is emitted when the sprite has finished animating.
It is not emitted when running is set to
false
, nor for sprites whose
loops
property is set to
AnimatedSprite.Infinite
.
该信号在 Qt 5.12 引入。
|
int advance () |
Advances the sprite animation by one frame.
|
int pause () |
Pauses the sprite animation. This does nothing if
paused
is
true
.
另请参阅 resume() .
|
int restart () |
停止，然后启动子画面动画。
|
int resume () |
再继续子画面动画，若
paused
is
true
；否则，这什么都不做。
另请参阅 pause() .
