public override bool OnReadValue(Style styleBlock, Css.Value value, int start, out int size)
{
if (value != null)
{
// Get a quick ref to the actual value to check:
value = value[start];
#if NETFX_CORE
if (
(RawType != null && RawType.GetTypeInfo().IsAssignableFrom(value.GetType().GetTypeInfo())) ||
value.Type == Type
)
{
size = 1;
return(true);
}
#else
if (
(RawType != null && RawType.IsAssignableFrom(value.GetType())) ||
value.Type == Type
)
{
size = 1;
return(true);
}
#endif
}
size = 0;
return(false);
}
/// <summary>
/// Sets the clipping region of the specified <see cref="RenderContext"/>.
/// </summary>
/// <param name="renderer">The <see cref="RenderContext"/> to have its clipping region set.</param>
protected virtual void SetClip(RenderContext renderer)
{
Css.Value clip = ClipPath;
if (clip == null)
{
return;
}
_previousClip = renderer.ClipRegion;
// Get the shape from the clip value:
Css.Value nextValue;
ShapeProvider shape = clip.ToShape(this, renderer, out nextValue);
if (clip != nextValue)
{
// Overwrite the raw clip var:
ClipPath = nextValue;
}
if (shape != null)
{
// Get the region now:
renderer.SetClip(shape.GetRegion(this, renderer), false);
}
}
/// <summary>
/// Sets a time curve which progresses the overall slides animation.
/// Almost always linear but change it for advanced effects.</summary>
public void setTimingFunction(Css.Value timingFunc)
{
// The function to use:
Blaze.VectorPath path = null;
if (timingFunc != null)
{
// Get the defined vector path:
path = timingFunc.GetPath(
style == null? null : style.RenderData,
Css.Properties.TimelineTimingFunction.GlobalProperty
);
}
if (path == null)
{
progressSampler = null;
}
else
{
if (!(path is Blaze.RasterVectorPath))
{
Blaze.RasterVectorPath rvp = new Blaze.RasterVectorPath();
path.CopyInto(rvp);
rvp.ToStraightLines();
path = rvp;
}
progressSampler = new Blaze.CurveSampler(path);
progressSampler.Reset();
}
}
/// <summary>Gets all child elements with the given tag.</summary>
/// <param name="selector">The selector string to match.</param>
/// <returns>The set of all tags with this tag.</returns>
public HTMLCollection querySelectorAll(string selector, bool one)
{
// Create results set:
HTMLCollection results = new HTMLCollection();
if (string.IsNullOrEmpty(selector))
{
// Empty set:
return(results);
}
// Create the lexer:
Css.CssLexer lexer = new Css.CssLexer(selector, this);
// Read a value:
Css.Value value = lexer.ReadValue();
// Read the selectors from the value:
List <Selector> selectors = new List <Selector>();
Css.CssLexer.ReadSelectors(null, value, selectors);
// Create a blank event to store the targets, if any:
CssEvent e = new CssEvent();
// Perform the selection process:
querySelectorAll(selectors.ToArray(), results, e, false);
return(results);
}
public override bool OnAttributeChange(string property)
{
// Global CSS properties. Width, height, fill, stroke, visibility, font-family,font-style etc are handled here.
Css.CssProperty cssProperty = Css.CssProperties.Get(property);
// Style refresh:
if (Style.Computed.FirstMatch != null)
{
// This is a runtime attribute change.
// We must consider if it's affecting the style or not:
Style.Computed.AttributeChanged(property);
}
if (cssProperty != null)
{
// It's a CSS property! Apply to style:
Css.Value value = ValueHelpers.Get(getAttribute(property));
style[cssProperty] = value;
}
else if (property == "x")
{
style.left = getAttribute("x");
}
else if (property == "y")
{
style.top = getAttribute("y");
}
else if (!base.OnAttributeChange(property))
{
return(false);
}
return(true);
}
/// <summary>Animates this property now.</summary>
/// <param name="animation">The animation that this property is a part of.</param>
/// <param name="targetValue">The parsed value that this property will be when the animation is over.</param>
/// <param name="timeCurve">Optional curve used to describe the progression of the animation.
/// X is time, Y is value. Null acts like linear (a line from 0,0 to 1,1).</param>
/// <param name="updateCss">True if this particular property should flush its changes to css/the screen.</param>
public void Animate(UIAnimation animation, Css.Value targetValue, Blaze.VectorPath timeCurve, bool updateCss)
{
Animation = animation;
CurrentTime = 0f;
UpdateCss = updateCss;
RawTarget = targetValue;
if (timeCurve == null)
{
ProgressSampler = null;
}
else
{
if (!(timeCurve is Blaze.RasterVectorPath))
{
Blaze.RasterVectorPath rvp = new Blaze.RasterVectorPath();
timeCurve.CopyInto(rvp);
rvp.ToStraightLines();
timeCurve = rvp;
}
ProgressSampler = new Blaze.CurveSampler(timeCurve);
ProgressSampler.Reset();
}
}
/// <summary>Sets the defaults for one or more transform functions.</summary>
private void SetDefaults(Css.Value set)
{
// Get as a function:
Css.Functions.Transformation tf = set as Css.Functions.Transformation;
if (tf != null)
{
tf.SetDefaults();
return;
}
// Should be a set:
if (set is Css.ValueSet)
{
for (int i = 0; i < set.Count; i++)
{
// Get as a function:
tf = set[i] as Css.Functions.Transformation;
if (tf != null)
{
tf.SetDefaults();
}
}
}
}
private void Complete()
{
// Remove from the update queue:
Stop();
// Set target to the result.
Css.Value target = RawTarget.Copy();
// Write it straight out to the computed style:
// (Internally handles any aliases for us)
Animation.ComputedStyle[InnerPropertyInfo] = target;
// If it's not an alias, update hostValue:
if (!InnerPropertyInfo.IsAlias)
{
PropertyValueObject = RawTarget;
}
if (UpdateCss)
{
// If we're the main animation (updateCss is true), tell the style it changed:
// Note that in grouped properties, only the last one actually runs the update.
Animation.ComputedStyle.ChangeProperty(PropertyInfo, PropertyValueObject);
// And call the done function:
Animation.Finished();
}
}
/// <summary>Resolves the marker for the given computed style.</summary>
public static string GetOrdinal(ComputedStyle style, bool prefixed)
{
// Get the list style type for this element:
Css.Value value = style[Css.Properties.ListStyleType.GlobalProperty];
if (value == null)
{
// Disc is the default:
return(style.reflowDocument.GetOrdinal(style.Element.childElementIndex + 1, "disc", prefixed) + " ");
}
else if (value.IsType(typeof(Css.Keywords.None)))
{
return("");
}
// Get textual name:
string name = value.Text;
// Is it a named set?
string result = style.reflowDocument.GetOrdinal(style.Element.childElementIndex + 1, name, prefixed);
if (result == null)
{
// It's possibly the symbols() function or alternatively it's just some text.
// Assume it's some text for now!
result = value.Text;
}
return(result);
}
/// <summary>Gets a CSS standard value. Typically e.g. "2in".</summary>
public static Css.Value Get(string valueText)
{
// Load it (never null):
Css.Value value = Css.Value.Load(valueText);
return(value);
}
public override bool OnReadValue(Style styleBlock, Css.Value value, int start, out int size)
{
int setCount = Set.Length;
int usedUp = 0;
size = 0;
// Unfortunately this is required to be worst-case n^2, but n is usually very small (typically just 2).
bool somethingWasSpent = true;
while (somethingWasSpent)
{
// Clear the flag:
somethingWasSpent = false;
for (int b = 0; b < setCount; b++)
{
// If it has been 'spent' then ignore this one.
if (Used[b])
{
continue;
}
int currentSize;
if (Set[b].OnReadValue(styleBlock, value, start, out currentSize))
{
// 'b' has now been used up.
Used[b] = true;
// Move start and size along:
start += currentSize;
size += currentSize;
// We now go again if there's any that have not been used up.
somethingWasSpent = true;
usedUp++;
break;
}
}
if (usedUp == setCount)
{
// Used them all up.
break;
}
}
// Clear used:
for (int i = 0; i < setCount; i++)
{
Used[i] = false;
}
// Valid if at least 1 matched.
return(size != 0);
}
public override bool OnReadValue(Style styleBlock, Css.Value value, int start, out int size)
{
if (!Value.OnReadValue(styleBlock, value, start, out size))
{
size = 0;
}
// Ok either way:
return(true);
}
/// <summary>Starts animating the named property and target value.</summary>
/// <param name="property">The property to update. May be an alias or composite.</param>
/// <param name="value">The target value of the property.</param>
/// <param name="updateCss">True if this property should update CSS/ the screen when it's progressed.</param>
private void Animate(CssProperty property, Css.Value value, bool updateCss)
{
// Check if this property is already animated - if so, interrupt it and override with our new values.
// There won't be many actively animated properties, so looping through the update queue is fast anyway.
AnimatedProperty animProperty = GetAnimatedProperty(Animating, property);
if (animProperty != null)
{
animProperty.Animate(this, value, TimeCurve, updateCss);
}
else
{
// Otherwise we want to create one or more AnimatedProperties and stick them into the queue.
// Get or create the initial value:
Css.Value hostValue;
Css.Value rawValue = property.GetOrCreateValue(Animating, ComputedStyle, false, out hostValue);
if (rawValue is Css.ValueSet)
{
// A special case is when animating a value set. Each one needs to actually animate separately.
// E.g. padding:40px 20px; then animating to just padding:30px;
for (int i = 0; i < rawValue.Count; i++)
{
// Create it now:
animProperty = new AnimatedProperty(this, property.GetAliased(i, true));
// Setup the value:
animProperty.SetupValue(hostValue, rawValue[i]);
// Get the target value:
Css.Value target = (value is Css.ValueSet) ? value[i] : value;
// Animate it now:
animProperty.Animate(this, target, TimeCurve, updateCss);
animProperty.AddToQueue();
}
}
else
{
// Create it now:
animProperty = new AnimatedProperty(this, property);
// Setup the value:
animProperty.SetupValue(hostValue, rawValue);
// Animate it now:
animProperty.Animate(this, value, TimeCurve, updateCss);
animProperty.AddToQueue();
}
}
}
public override bool OnReadValue(Style styleBlock, Css.Value value, int start, out int size)
{
if (value[start].GetRawDecimal() == RawLiteral)
{
size = 1;
return(true);
}
size = 0;
return(false);
}
public override bool OnReadValue(Style styleBlock, Css.Value value, int start, out int size)
{
// Check if it's inherit or initial:
if (value is Css.Keywords.Initial || value is Css.Keywords.Inherit)
{
// Apply it!
size = 1;
if (SetInfo != null)
{
// Indicate that we've been set:
SetInfo.Set = true;
}
styleBlock[RawProperty] = value;
return(true);
}
Css.Spec.Value spec = RawProperty.Specification;
if (spec.OnReadValue(styleBlock, value, start, out size))
{
// Apply it!
if (SetInfo != null)
{
// Indicate that we've been set:
SetInfo.Set = true;
}
if (size == 1)
{
styleBlock[RawProperty] = value[start];
}
else
{
// Chop out a segment:
Css.ValueSet set = new Css.ValueSet(new Css.Value[size]);
for (int i = 0; i < size; i++)
{
set[i] = value[start + i];
}
// Apply:
styleBlock[RawProperty] = set;
}
return(true);
}
size = 0;
return(false);
}
public override bool OnReadValue(Style styleBlock, Css.Value value, int start, out int size)
{
for (int i = 0; i < Set.Length; i++)
{
if (Set[i].OnReadValue(styleBlock, value, start, out size))
{
return(true);
}
}
size = 0;
return(false);
}
public override bool OnReadValue(Style styleBlock, Css.Value value, int start, out int size)
{
Css.CssFunction func = value[start] as Css.CssFunction;
if (func != null && func.Name == Name)
{
size = 1;
return(true);
}
size = 0;
return(false);
}
/// <summary>Gets the named CSS property as a colour. If it's not found, the given default is used.</summary>
protected Color GetFilterColour(CssProperty prop, Color deflt)
{
// Resolve the property (it must know its own default):
Css.Value value = ComputedStyle.Resolve(prop);
if (value == null)
{
return(deflt);
}
// Get as a colour:
return(value.GetColour(RenderData, prop));
}
/// <summary>Resolves the named CSS property into a decimal value held in the computed style.</summary>
protected float ResolveDecimal(Css.CssProperty prop)
{
// Reslove now:
Css.Value val = ComputedStyle.Resolve(prop);
if (val == null)
{
// Use initial value to avoid this one.
return(0f);
}
return(val.GetDecimal(RenderData, prop));
}
/// <summary>Animates css properties on this element.</summary>
/// <param name="css">A set of target css properties, e.g. "rotate-x:45deg;scale-y:110%;".</param>
/// <param name="duration">The time, in seconds, to take animating the properties.</param>
/// <param name="cssTimeFunction">The timing function (CSS).
/// Can be anything that's valid CSS; e.g. "steps(3)" or "ease". Note that "ease" is the default in CSS.</summary>
/// <returns>An animation instance which can be used to track progress.</returns>
public UIAnimation animate(string css, float duration, string cssTimeFunction)
{
// Load the CSS function:
Css.Value value = Css.Value.Load(cssTimeFunction);
Blaze.VectorPath timeFunc = null;
if (value != null)
{
// Get as a path:
timeFunc = value.GetPath(null, null);
}
return(new UIAnimation(this, css, duration, timeFunc));
}
public override void OnComputeBox(Renderman renderer, Css.LayoutBox box, ref bool widthUndefined, ref bool heightUndefined)
{
RectangleProvider rect = Rectangle;
// Check to see if w/h was updated via CSS:
Css.Value newWidth = Width;
Css.Value newHeight = Height;
if (rect.Width != newWidth || rect.Height != newHeight)
{
rect.Width = newWidth;
rect.Height = newHeight;
RebuildPath();
}
}
/// <summary>Sets up general information for a particular animation and starts running it.</summary>
private void Setup(Node animating, Style style, float duration, Blaze.VectorPath timeCurve)
{
Animating = animating;
ComputedStyle = (animating as IRenderableNode).ComputedStyle;
if (duration <= 0f)
{
duration = 0f;
}
Duration = duration;
TimeCurve = timeCurve;
// Start animating the properties now.
foreach (KeyValuePair <CssProperty, Css.Value> kvp in style.Properties)
{
// Get the value:
Css.Value value = kvp.Value;
// Get the property:
CssProperty property = kvp.Key;
// Grab the type:
Css.ValueType type = value.Type;
// Animate it (note that we don't need to copy it):
if (property == Css.Properties.TransformProperty.GlobalProperty)
{
// Special case for animating transform.
AnimateTransform(value);
}
else if (type == Css.ValueType.Set)
{
int count = value.Count;
for (int i = 0; i < count; i++)
{
// Get the correct aliased property and animate it:
Animate(property.GetAliased(i, true), value[i], (i == (count - 1)));
}
}
else
{
Animate(property, value, true);
}
}
}
private void BuildFilter(RenderContext renderer, bool withCssFilter)
{
// Get a path to draw:
VectorPath path = GetPath(this, renderer);
if (Visibility == VisibilityMode.Hidden || !PushTransforms(renderer))
{
return;
}
if (withCssFilter)
{
// Get the filter CSS property:
Css.Value filterValue = style.Computed[Css.Properties.Filter.GlobalProperty];
if (filterValue != null)
{
string filterPath = filterValue.Text;
Element filter = document.getElementById(filterPath) as SVGFilterElement;
if (filter != null)
{
PopTransforms(renderer);
// filter.ApplyFilter(this, renderer, (r) => this.BuildFilter(r, false));
// Don't render normally.
return;
}
}
}
SetClip(renderer);
if (path != null)
{
BuildFill(path, renderer);
BuildStroke(path, renderer);
}
else
{
BuildChildren(renderer);
}
ResetClip(renderer);
PopTransforms(renderer);
}
/// <summary>Scrolls the element by the given values.</summary>
/// <param name="x">The change in x pixels.</param>
/// <param name="y">The change in y pixels.</param>
public void scrollBy(float x, float y)
{
if (x == 0f && y == 0f)
{
return;
}
// Get the scroll value (if there is one):
Css.Value scroll = Style.Computed.Scroll;
if (scroll == null)
{
scrollTo(x, y);
return;
}
float top = (scroll[0] == null) ? 0f : scroll[0].GetDecimal(RenderData, null);
float left = (scroll[1] == null) ? 0f : scroll[1].GetDecimal(RenderData, null);
scrollTo(left + x, top + y);
}
/// <summary>Special case when animating CSS transform.</summary>
private void AnimateTransform(Css.Value value)
{
// Check if this property is already animated - if so, interrupt it and override with our new values.
// There won't be many actively animated properties, so looping through the update queue is fast anyway.
CssProperty property = Css.Properties.TransformProperty.GlobalProperty;
AnimatedTransformProperty animProperty = GetAnimatedProperty(Animating, property) as AnimatedTransformProperty;
bool isNew = (animProperty == null);
if (isNew)
{
// Create it now:
animProperty = new AnimatedTransformProperty(this);
// Add to queue:
animProperty.AddToQueue();
}
animProperty.Animate(this, value, TimeCurve, true);
}
/// <summary>Called when the thumb is being dragged.</summary>
public override bool OnDrag(PowerUI.DragEvent mouseEvent)
{
// Get the amount of pixels the pointer moved by:
float deltaX = AllowX ? mouseEvent.deltaX : 0f;
float deltaY = AllowY ? mouseEvent.deltaY : 0f;
if (deltaX == 0f && deltaY == 0f)
{
return(false);
}
// Resize now!
ComputedStyle cs = ToResize_.Style.Computed;
if (deltaX != 0f)
{
// Width is..
Css.Value width = cs[Css.Properties.Width.GlobalProperty];
// Update it:
deltaX += width.GetDecimal(ToResize_.RenderData, Css.Properties.Width.GlobalProperty);
// Write it back out:
cs.ChangeProperty(Css.Properties.Width.GlobalProperty, new Css.Units.DecimalUnit(deltaX));
}
if (deltaY != 0f)
{
// Height is..
Css.Value height = cs[Css.Properties.Height.GlobalProperty];
// Update it:
deltaY += height.GetDecimal(ToResize_.RenderData, Css.Properties.Height.GlobalProperty);
// Write it back out:
cs.ChangeProperty(Css.Properties.Height.GlobalProperty, new Css.Units.DecimalUnit(deltaY));
}
return(false);
}
/// <summary>Sets the clipping boundary from the given computed style.</summary>
/// <param name="style">The computed style to find the clipping boundary from.</param>
public void SetBoundary(ComputedStyle computed, LayoutBox box)
{
bool visibleX = (box.OverflowX == VisibilityMode.Visible);
bool visibleY = (box.OverflowY == VisibilityMode.Visible);
if (visibleX && visibleY)
{
return;
}
BoxRegion newBoundary = null;
if (visibleX)
{
newBoundary = new BoxRegion(ClippingBoundary.X, box.Y + box.FixedStyleOffsetTop, ClippingBoundary.Width, box.InnerHeight);
}
else if (visibleY)
{
newBoundary = new BoxRegion(box.X + box.FixedStyleOffsetLeft, ClippingBoundary.Y, box.InnerWidth, ClippingBoundary.Height);
}
else
{
newBoundary = new BoxRegion(box.X + box.FixedStyleOffsetLeft, box.Y + box.FixedStyleOffsetTop, box.InnerWidth, box.InnerHeight);
}
// Should it be clipped?
Css.Value clipValue = computed[Css.Properties.ClipMode.GlobalProperty];
if (clipValue == null || clipValue.IsType(typeof(Css.Keywords.None)) || clipValue.GetBoolean(computed.RenderData, Css.Properties.ClipMode.GlobalProperty))
{
newBoundary.ClipBy(ClippingBoundary);
}
else
{
ScreenClip = false;
}
ClippingBoundary = newBoundary;
}
public override bool OnReadValue(Style styleBlock, Css.Value value, int start, out int size)
{
int setCount = Set.Length;
size = 0;
for (int i = 0; i < setCount; i++)
{
int currentSize;
if (Set[i].OnReadValue(styleBlock, value, start, out currentSize))
{
start += currentSize;
size += currentSize;
}
else
{
size = 0;
return(false);
}
}
// All ok!
return(true);
}
/// <summary>Loads a timeline from the given JSON.</summary>
public void load(Json.JSObject json)
{
if (started)
{
// Reset if needed:
reset();
}
duration = null;
// First, check for the 'tracks' field:
Json.JSObject trackData = json["tracks"];
if (trackData == null)
{
// Considered to be a single track.
// Try loading it now:
Track track = Track.loadFromJson(this, json);
if (track == null)
{
// Empty:
tracks = new Track[0];
}
else
{
// We have at least 1 entry in a track.
tracks = new Track[1];
// We now need to detect what kind of track it is based on what it provides.
// If it's a style track, the first element
tracks[0] = track;
}
}
else
{
// Optional default language (must be before tracks load):
string lang = json.String("lang");
if (!string.IsNullOrEmpty(lang))
{
defaultLanguage = lang.Trim().ToLower();
}
// Must be an indexed array:
var trackArray = trackData as Json.JSIndexedArray;
if (trackArray == null)
{
loadFailed("'tracks' must be an indexed array.", this);
}
// Fully defined timeline.
int length = trackArray.length;
// Create track set:
tracks = new Track[length];
// Load each one:
for (int i = 0; i < length; i++)
{
// Load the track now:
tracks[i] = Track.loadFromJson(this, trackArray[i]);
}
// Optional duration:
string durationText = json.String("duration");
if (!string.IsNullOrEmpty(durationText))
{
// Load it as a CSS value:
duration = Css.Value.Load(durationText);
}
}
status_ = TIMELINE_STARTED;
}
/// <summary>Figures out what kind of lerp is required with the given from/to values.</summary>
public void ApplyValues(Css.Value from, Css.Value to)
{
// Get computed:
if (from != null)
{
from = from.Computed;
if (from.IsType(typeof(Css.Keywords.None)))
{
from = null;
}
}
if (to != null)
{
to = to.Computed;
if (to.IsType(typeof(Css.Keywords.None)))
{
to = null;
}
}
// If both are null, do nothing.
if (to == null && from == null)
{
return;
}
// If either is a cached transformValue, pull the origin:
if (to != null && to is Css.Units.TransformValue)
{
Css.Units.TransformValue rawTo = to as Css.Units.TransformValue;
to = rawTo.Origin;
}
if (from != null && from is Css.Units.TransformValue)
{
Css.Units.TransformValue rawFrom = from as Css.Units.TransformValue;
from = rawFrom.Origin;
}
// If one or the other is null then it acts like the identity of the other.
if (to != null && from != null)
{
// Check for functional equiv:
if (!to.FunctionalEquals(from))
{
// Matrix interpolation :'(
// Bake both matrices:
RenderableData rd = Animation.ComputedStyle.RenderData;
Matrix4x4 fromMatrix = Css.Properties.TransformProperty.Compute(from, rd);
Matrix4x4 toMatrix = Css.Properties.TransformProperty.Compute(to, rd);
// If either is 3D then they both are treated as 3D values:
if (Css.Properties.TransformProperty.Is3D(from) || Css.Properties.TransformProperty.Is3D(to))
{
// 3D!
// Write out into this value (no prep required here):
FromFunctions = new InterpolationMatrix3D(fromMatrix);
ToFunctions = new InterpolationMatrix3D(toMatrix);
}
else
{
// 2D!
// Write out into this value:
InterpolationMatrix fromInt = new InterpolationMatrix(fromMatrix);
InterpolationMatrix toInt = new InterpolationMatrix(toMatrix);
// Prep for interpolation:
fromInt.PrepareForInterpolate(toInt);
ToFunctions = toInt;
FromFunctions = fromInt;
}
// Copy the from value:
ActiveFunctions = FromFunctions.Copy();
// Write it back out:
WriteOut();
return;
}
}
// Interpolate every parameter of each function (if the other is null, use 0)
// Note! The same function can appear multiple times.
ToFunctions = to;
FromFunctions = from;
if (FromFunctions == null)
{
// Copy to (going from none) and set it all as zero:
ActiveFunctions = ToFunctions.Copy();
// Set it all to 'zero' (it's e.g. 1 for scale though!)
SetDefaults(ActiveFunctions);
}
else
{
// Copy from:
ActiveFunctions = FromFunctions.Copy();
}
// Write it back out:
WriteOut();
}
