/// <summary>Sends the request off and defines a callback to run when the result is ready.</summary>
/// <param name="imageReady">The callback to run when the graphic has been retrieved.
/// Note that the callback must check if the result is <see cref="PowerUI.ImagePackage.Ok"/>.</param>
public void Get(OnImageReady imageReady)
{
ImageReady += imageReady;
if (string.IsNullOrEmpty(Url))
{
ImageReady(this);
return;
}
// Exception - Is it an animation that has been cached?
if (File.Filetype == "spa")
{
// Might already be loaded - let's check:
SPA animation = SPA.Get(Url);
if (animation != null)
{
//It's already been loaded - use that.
GotGraphic(animation);
return;
}
}
// Do we have a file protocol handler available?
FileProtocol fileProtocol = File.Handler;
if (fileProtocol != null)
{
fileProtocol.OnGetGraphic(this, File);
}
}
/// <summary>Gets an already loaded SPA from the cache.</summary>
/// <returns>An SPA object if found; null otherwise.</returns>
public static SPA Get(string name)
{
SPA result = null;
Instances.TryGetValue(name, out result);
return(result);
}
/// <summary>Called by the file handler when an animation was retrieved successfully.</summary>
/// <param name="animation">The animation received.</param>
public void GotGraphic(SPA animation)
{
Clear();
Animated = true;
SPAFile = animation;
ImageReady(this);
}
/// <summary>Creates a new playable instance of the given SPA animation.</summary>
public SPAInstance(SPA animation)
{
Animation = animation;
AnimatedMaterial = new Material(SPA.IsolationShader);
SetSprite(0);
FrameDelay = 1f / (float)Animation.FrameRate;
}
/// <summary>Clears all content from the UI and all WorldUI's.
/// Please note that it is safer to set innerHTML to a blank string for a particular UI than calling this.</summary>
public static void ClearAll()
{
content = null;
if (Renderer != null)
{
Renderer.Destroy();
Renderer = null;
document = null;
}
Fonts.Clear();
AtlasStacks.Clear();
Http.Clear();
SPA.Clear();
UIAnimation.Clear();
DynamicTexture.RemoveAll();
PowerUI.Input.Clear();
ScreenInfo.Clear();
WorldUI currentWorldUI = FirstWorldUI;
while (currentWorldUI != null)
{
currentWorldUI.Destroy();
currentWorldUI = currentWorldUI.UIAfter;
}
LastWorldUI = null;
FirstWorldUI = null;
}
/// <summary>Attempts to get a graphic from the given location using this protocol.</summary>
/// <param name="package">The image request. GotGraphic must be called on this when the protocol is done.</param>
/// <param name="path">The location of the file to retrieve using this protocol.</param>
public override void OnGetGraphic(ImagePackage package, FilePath path)
{
if (path.Filetype == "spa")
{
// Grab a runtime SPA:
package.GotGraphic(SPA.Get(path.Path));
return;
}
package.GotGraphic(ImageCache.Get(path.Path));
}
/// <summary>Removes all content from this image package.</summary>
private void Clear()
{
// Clear any animation:
GoingOffDisplay();
Error = null;
#if !MOBILE
Video = null;
#endif
Image = null;
SPAFile = null;
IsVideo = false;
Animated = false;
IsDynamic = false;
DynamicImage = null;
}
public override void Clear(){
SPAFile=null;
}
//--------------------------------------
/// <summary>Updates the UI. Don't call this - PowerUI knows when it's needed; This is done from Start and WorldUI constructors.</summary>
public static void InternalUpdate()
{
// Update any callbacks:
if (Callbacks.FirstToRun != null)
{
Callbacks.RunAll();
}
// Update animations:
SPA.Update();
// Update any Http requests:
Http.Update();
if (WorldUI.LiveUpdatablesAvailable)
{
WorldUI.UpdateAll();
}
RedrawTimer += Time.deltaTime;
if (RedrawTimer < RedrawRate)
{
return;
}
RedrawTimer = 0f;
if (GUICamera == null)
{
return;
}
// Atlases:
AtlasStacks.Update();
// Screen size:
ScreenInfo.Update();
// Update Input (mouse/keys etc).
PowerUI.Input.Update();
// Animations:
UIAnimation.Update();
// Dynamic graphics:
DynamicTexture.Update();
// Redraw the root html document (if it needs to be redrawn):
Renderer.Update();
if (MainCameraPool != null && MainCameraPool.DidLayout)
{
// The main UI did a layout and we have a camera pool.
// We now need to do some post-layout spring cleaning.
MainCameraPool.ClearPool();
}
// Redraw any in-world documents (if they need it).
// Did we call update all above?
bool worldUIRequiresUpdate = !WorldUI.LiveUpdatablesAvailable;
// Clear the flag:
WorldUI.LiveUpdatablesAvailable = false;
if (FirstWorldUI != null)
{
WorldUI current = FirstWorldUI;
while (current != null)
{
if (worldUIRequiresUpdate)
{
// Update:
current.Update();
// Was it destroyed?
if (current.Renderer == null)
{
// Hop to the next one:
current = current.UIAfter;
continue;
}
}
if (current.Expires)
{
current.ExpiresIn -= RedrawRate;
if (current.ExpiresIn <= 0f)
{
// Expire it:
current.Expire();
// Hop to the next one:
current = current.UIAfter;
continue;
}
}
// Update the renderer:
current.Renderer.Update();
// Update the flag:
if (current.PixelPerfect || current.AlwaysFaceCamera)
{
// We have at least one which is updateable:
WorldUI.LiveUpdatablesAvailable = true;
}
current = current.UIAfter;
}
}
// Flush any atlases:
AtlasStacks.Flush();
}
/// <summary>Creates a new playable instance of the given SPA animation.</summary>
public SPAInstance(SPA animation){
Animation=animation;
AnimatedMaterial=new Material(SPA.IsolationShader);
SetSprite(0);
FrameDelay=1f/(float)Animation.FrameRate;
}
/// <summary>Loads a new sprite from the given binary stream.</summary>
/// <param name="animation">The animation this sprite belongs to.</param>
/// <param name="reader">The binary stream that contains this sprites data.</param>
/// <param name="id">The ID of the sprite in the animation.</param>
public SPASprite(SPA animation, BinaryReader reader, int id)
{
ID = id;
Animation = animation;
// Read some bit flags - these give information about this frame:
byte flags = reader.ReadByte();
// Does it also have an alpha frame?
// If it does, there are two images in this frame (alpha one second).
bool hasAlphaFrame = ((flags & 1) == 1);
// How many frames this sprite holds:
FrameCount = reader.ReadUInt16();
// How big is the image, in bytes:
int dataSize = reader.ReadInt32();
// Setup the sprite now:
Sprite = new Texture2D(0, 0);
// And load the image data:
Sprite.LoadImage(reader.ReadBytes(dataSize));
Width = Sprite.width;
Height = Sprite.height;
// Make sure it filters correctly.
// This is so we don't see parts of other frames around the edge of the image onscreen:
Sprite.filterMode = FilterMode.Point;
// Setup the scale:
TextureScale = new Vector2((float)Animation.FrameWidth / (float)Width, (float)Animation.FrameHeight / (float)Height);
VerticalFrameCount = Height / Animation.FrameHeight;
if (hasAlphaFrame)
{
int alphaImageSize = reader.ReadInt32();
// Setup the temporary alpha texture:
Texture2D alphaImage = new Texture2D(0, 0);
// And load it's data:
alphaImage.LoadImage(reader.ReadBytes(alphaImageSize));
// Next, merge the alpha pixels into our main sprite.
Color[] spritePixels = Sprite.GetPixels();
Color[] alphaPixels = alphaImage.GetPixels();
if (spritePixels.Length != alphaPixels.Length)
{
throw new Exception("Invalid SPA alpha channel image.");
}
// Set each alpha value from the grayscale of the alpha image:
for (int i = spritePixels.Length - 1; i >= 0; i--)
{
Color pixel = spritePixels[i];
pixel.a = alphaPixels[i].grayscale;
spritePixels[i] = pixel;
}
// Write the pixels back:
Sprite.SetPixels(spritePixels);
}
}
/// <summary>Creates an empty sprite.</summary>
public SPASprite(SPA animation, int id)
{
Animation = animation;
ID = id;
}
public override void Clear()
{
SPAFile = null;
}
/// <summary>Removes all content from this image package.</summary>
private void Clear(){
// Clear any animation:
GoingOffDisplay();
Error=null;
#if !MOBILE
Video=null;
#endif
Image=null;
SPAFile=null;
IsVideo=false;
Animated=false;
IsDynamic=false;
DynamicImage=null;
}
/// <summary>Called by the file handler when an animation was retrieved successfully.</summary>
/// <param name="animation">The animation received.</param>
public void GotGraphic(SPA animation){
Clear();
Animated=true;
SPAFile=animation;
ImageReady(this);
}
