Canvas
Wisej.Web.Canvas
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Wisej.Web.Canvas
Last updated
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Namespace: Wisej.Web
Assembly: Wisej.Framework (3.5.0.0)
Represents the HTML5 canvas element.
Initializes a new instance of the Canvas class.
BorderStyle: Indicates the border style for the control. (Default: None)
Object: Sets or returns the color, gradient, or pattern used to fill the drawing.
Single: Sets or returns the current alpha or transparency value of the drawing.
CanvasCompositeOperation: Sets or returns how a new image are drawn onto an existing image.
CanvasLineCap: Sets or returns the style of the end caps for a line.
Single: Sets or returns the type of corner created, when two lines meet.
CanvasLineJoin: Sets or returns the type of corner created, when two lines meet.
Int32: Sets or returns the current line width, in pixels.
Boolean: Turns live update mode on or off. When live update is on, all canvas calls are pushed to the client immediately, when is off (default) the control updates the client at the end of the request.
Int32: Sets or returns the maximum miter length.
Int32: Sets or returns the blur level for shadows.
Color: Sets or returns the color to use for shadows.
Int32: Sets or returns the horizontal distance of the shadow from the shape.
Int32: Sets or returns the vertical distance of the shadow from the shape.
Object: Sets or returns the color, gradient, or pattern used for strokes.
CanvasTextAlign: Sets or returns the current alignment for text content, according to the anchor point.
CanvasTextBaseline: Sets or returns the current text baseline used when drawing text.
Font: Sets or returns the current font properties for text content on the canvas.
Creates an arc/curve (used to create circles, or parts of circles).
x
The x-coordinate of the center of the circle.
y
The y-coordinate of the center of the circle.
radius
The radius of the circle.
startAngle
The starting angle, in degrees.
endAngle
The ending angle, in degrees.
Specifies whether the drawing should be counterclockwise or clockwise. Default is false.
Creates an arc/curve (used to create circles, or parts of circles).
location
The x-coordinate and y-coordinate of the center of the circle.
radius
The radius of the circle.
startAngle
The starting angle, in degrees.
endAngle
The ending angle, in degrees.
Specifies whether the drawing should be counterclockwise or clockwise. Default is false.
Creates an arc/curve between two tangents on the canvas.
x1
The x-coordinate of the first tangent.
y1
The y-coordinate of the first tangent.
x2
The x-coordinate of the second tangent.
y2
The y-coordinate of the second tangent.
radius
The radius of the arc
Creates an arc/curve between two tangents on the canvas.
location1
The x-coordinate and y-coordinate of the first tangent.
location2
The x-coordinate and y-coordinate of the second tangent.
radius
The radius of the arc
begins a path, or resets the current path.
Adds a point to the current path by using the specified control points that represent a cubic Bézier curve.
cp1x
The x-coordinate of the first Bézier control point.
cp1y
The y-coordinate of the first Bézier control point.
cp2x
The x-coordinate of the second Bézier control point.
cp2y
The y-coordinate of the second Bézier control point.
x
The x-coordinate of the ending point.
y
The y-coordinate of the ending point.
A cubic bezier curve requires three points. The first two points are control points that are used in the cubic Bézier calculation and the last point is the ending point for the curve. The starting point for the curve is the last point in the current path. If a path does not exist, use the beginPath() and moveTo() methods to define a starting point.
Clears the specified pixels within a given rectangle.
rect
Rectangle's coordinates and size.
Clears the specified pixels within a given rectangle.
x
The x-coordinate of the upper-left corner of the rectangle.
y
The y-coordinate of the upper-left corner of the rectangle.
width
The width of the rectangle, in pixels.
height
The height of the rectangle, in pixels.
Clips a region of any shape and size from the original canvas.
Once a region is clipped, all future drawing will be limited to the clipped region (no access to other regions on the canvas). You can however save the current canvas region using the save() method before using the clip() method, and restore it (with the restore() method) any time in the future.
Creates a path from the current point back to the starting point.
Creates a linear gradient object. The gradient can be used to fill rectangles, circles, lines, text, etc.
x0
The x-coordinate of the start point of the gradient.
y0
The y-coordinate of the start point of the gradient.
x1
The x-coordinate of the end point of the gradient.
y1
The y-coordinate of the end point of the gradient.
colorStops
Array of color stops. Each element must define a stop value between 0.0 and 1.0 and a color value.
Returns: Object.
Repeats the specified element in the specified direction. The repeated element can be used to draw/fill rectangles, circles, lines etc.
image
Specifies the image of the pattern to use.
repeat
Specifies the repeat pattern.
Returns: Object.
Repeats the specified element in the specified direction. The repeated element can be used to draw/fill rectangles, circles, lines etc.
imageSource
Specifies the source of the image of the pattern to use.
repeat
Specifies the repeat pattern.
Returns: Object.
Creates a linear gradient object. The gradient can be used to fill rectangles, circles, lines, text, etc.
x0
The x-coordinate of the start point of the gradient.
y0
The y-coordinate of the start point of the gradient.
r0
The radius of the starting circle.
x1
The x-coordinate of the end point of the gradient.
y1
The y-coordinate of the end point of the gradient.
r1
The radius of the ending circle.
colorStops
Array of color stops. Each element must define a stop value between 0.0 and 1.0 and a color value.
Returns: Object.
Draws an image onto the canvas.
image
Specifies the image to draw.
x
The x-coordinate where to place the image on the canvas.
y
The y-coordinate where to place the image on the canvas.
Draws an image onto the canvas.
image
Specifies the image to draw.
location
The x-coordinate and y-coordinate where to place the image on the canvas.
Draws an image onto the canvas.
image
Specifies the image to draw.
x
The x-coordinate where to place the image on the canvas.
y
The y-coordinate where to place the image on the canvas.
width
The width of the image to use (stretch or reduce the image).
height
The height of the image to use (stretch or reduce the image).
Draws an image onto the canvas.
image
Specifies the image to draw.
rect
The coordinates and size of the image to place on the canvas.
Draws an image onto the canvas.
image
Specifies the image to draw.
clipX
The x-coordinate where to start clipping.
clipY
The y-coordinate where to start clipping.
clipWidth
The width of the clipped image.
clipHeight
The height of the clipped image.
x
The x coordinate where to place the image on the canvas.
y
The y coordinate where to place the image on the canvas.
width
The width of the image to use (stretch or reduce the image).
height
The height of the image to use (stretch or reduce the image).
Draws an image onto the canvas.
image
Specifies the image to draw.
clipRect
The clip rectangle.
imageRect
The size and location of the image to place on the canvas.
Draws an image onto the canvas.
imageSource
Specifies the image to draw.
x
The x-coordinate where to place the image on the canvas.
y
The y-coordinate where to place the image on the canvas.
Draws an image onto the canvas.
imageSource
Specifies the image to draw.
location
The x-coordinate and y-coordinate where to place the image on the canvas.
Draws an image onto the canvas.
imageSource
Specifies the image to draw.
x
The x coordinate where to place the image on the canvas.
y
The y coordinate where to place the image on the canvas.
width
The width of the image to use (stretch or reduce the image).
height
The height of the image to use (stretch or reduce the image).
Draws an image onto the canvas.
imageSource
Specifies the image to draw.
rect
The coordinates and size of the image to place on the canvas.
Draws an image onto the canvas.
imageSource
Specifies the image to draw.
clipX
The x coordinate where to start clipping.
clipY
The y coordinate where to start clipping.
clipWidth
The width of the clipped image.
clipHeight
The height of the clipped image.
x
The x coordinate where to place the image on the canvas.
y
The y coordinate where to place the image on the canvas.
width
The width of the image to use (stretch or reduce the image).
height
The height of the image to use (stretch or reduce the image).
Draws an image onto the canvas.
imageSource
Specifies the image to draw.
clipRect
The clip rectangle.
imageRect
The size and location of the image to place on the canvas.
Fills the current drawing (path.)
Draws a "filled" rectangle. The default color of the fill is black.
rect
Rectangle's coordinates and size.
Draws a "filled" rectangle. The default color of the fill is black.
x
The x-coordinate of the upper-left corner of the rectangle.
y
The y-coordinate of the upper-left corner of the rectangle.
width
The width of the rectangle, in pixels.
height
The height of the rectangle, in pixels.
Draws filled text on the canvas. The default color of the text is black.
text
Specifies the text that will be written on the canvas.
x
The x-coordinate where to start painting the text (relative to the canvas).
y
The y-coordinate where to start painting the text (relative to the canvas)
Draws filled text on the canvas. The default color of the text is black.
text
Specifies the text that will be written on the canvas.
location
The x-coordinate and y-coordinate where to start painting the text (relative to the canvas).
Returns the current line dash pattern.
Returns: Int32[]. A list of numbers that specifies distances to alternately draw a line and a gap (in coordinate space units).
Adds a new point and creates a line TO that point FROM the last specified point in the canvas (this method does not draw the line).
x
The x-coordinate of where to create the line to.
y
The y-coordinate of where to create the line to.
Adds a new point and creates a line TO that point FROM the last specified point in the canvas (this method does not draw the line).
location
The x-coordinate and y-coordinate of where to create the line to.
Moves the path to the specified point in the canvas, without creating a line.
x
The x-coordinate of where to move the path to.
y
The y-coordinate of where to move the path to.
Use the stroke() method to actually draw the path on the canvas.
Moves the path to the specified point in the canvas, without creating a line.
location
The x-coordinate and y-coordinate of where to move the path to.
Use the stroke() method to actually draw the path on the canvas.
Adds a point to the current path by using the specified control points that represent a quadratic Bézier curve.
cpx
The x-coordinate of the Bézier control point.
cpy
The y-coordinate of the Bézier control point.
x
The x-coordinate of the ending point.
y
The y-coordinate of the ending point.
A quadratic Bézier curve requires two points. The first point is a control point that is used in the quadratic Bézier calculation and the second point is the ending point for the curve. The starting point for the curve is the last point in the current path. If a path does not exist, use the beginPath() and moveTo() methods to define a starting point.
Creates a rectangle.
rect
Rectangle's coordinates and size.
Creates a rectangle.
x
The x-coordinate of the upper-left corner of the rectangle.
y
The y-coordinate of the upper-left corner of the rectangle.
width
The width of the rectangle, in pixels.
height
The height of the rectangle, in pixels.
Returns previously saved path state and attributes.
Method rotates the current drawing.
degrees
The rotation angle, in degrees.
The rotation will only affect drawings made AFTER the rotation is done.
Saves the state of the current context.
Scales the current drawing, bigger or smaller.
scaleWidth
Scales the width of the current drawing (1=100%, 0.5=50%, 2=200%, etc.)
scaleHeight
Scales the height of the current drawing (1=100%, 0.5=50%, 2=200%, etc.)
Scales the current drawing, bigger or smaller.
scale
Scales the width of the current drawing (1=100%, 0.5=50%, 2=200%, etc.)
Sets the line dash pattern.
segments
A list of numbers that specifies distances to alternately draw a line and a gap (in coordinate space units). If the number of elements in the array is odd, the elements of the array get copied and concatenated. For example, [5, 15, 25] will become [5, 15, 25, 5, 15, 25].
Resets the current transform to the identity matrix, and then runs transform() with the same arguments.
scaleWidth
Scales the drawing horizontally.
skewHoriz
Skew the drawing horizontally.
skewVert
Skew the drawing vertically.
scaleHeight
Scales the drawing vertically.
x
Moves the drawing horizontally
y
Moves the drawing vertically.
The transformation will only affect drawings made after the transform() method is called. The transform() method behaves relatively to other transformations made by rotate(), scale(), translate(), or transform(). Example: If you already have set your drawing to scale by two, and the transform() method scales your drawings by two, your drawings will now scale by four.
Draws the path you have defined.
Draws a rectangle (no fill). The default color of the stroke is black.
rect
Rectangle's coordinates and size.
Draws a rectangle (no fill). The default color of the stroke is black.
x
The x-coordinate of the upper-left corner of the rectangle.
y
The y-coordinate of the upper-left corner of the rectangle.
width
The width of the rectangle, in pixels.
height
The height of the rectangle, in pixels.
Draws text (with no fill) on the canvas. The default color of the text is black.
text
Specifies the text that will be written on the canvas.
x
The x-coordinate where to start painting the text (relative to the canvas).
y
The y-coordinate where to start painting the text (relative to the canvas)
Draws text (with no fill) on the canvas. The default color of the text is black.
text
Specifies the text that will be written on the canvas.
location
The x-coordinate and y-coordinate where to start painting the text (relative to the canvas).
Replaces the current transformation matrix.
scaleWidth
Scales the drawing horizontally.
skewHoriz
Skew the drawing horizontally.
skewVert
Skew the drawing vertically.
scaleHeight
Scales the drawing vertically.
x
Moves the drawing horizontally
y
Moves the drawing vertically.
The transformation will only affect drawings made after the transform() method is called. The transform() method behaves relatively to other transformations made by rotate(), scale(), translate(), or transform(). Example: If you already have set your drawing to scale by two, and the transform() method scales your drawings by two, your drawings will now scale by four.
Remaps the (0,0) position on the canvas.
x
The value to add to horizontal (x) coordinates.
y
The value to add to vertical (y) coordinates.
When you call a method such as fillRect() after translate(), the value is added to the x- and y-coordinate values.
Remaps the (0,0) position on the canvas.
location
The value to add to horizontal (x) and vertical (y) coordinates.
When you call a method such as fillRect() after translate(), the value is added to the x- and y-coordinate values.
EventHandler Fired when the canvas requires a full redraw.
Bindable components implement this interface.
Controls that support drag & drop operations implement this interface.
All wisej components implement this interface.
Represents a Wisej component that is capable of handling postback requests from the client.
Allows an object to serialize itself.
counterClockwise
counterClockwise
All wisej controls derived from the class must implement this interface.
