module

Draw::GraphicContext

Inherits Draw::PathBuilder

Instance methods

begin_path

Creates a new path

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clear

Fills the current canvas with a default transparent color

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clear_rect(x1 : Int32, y1 : Int32, x2 : Int32, y2 : Int32)

Fills the specified rectangle with a default transparent color

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compose_matrix_transform(tr : Draw::Matrix)

Composes the current transformation matrix with tr

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create_string_path(text : String, x : Float64, y : Float64) : Float64

Creates a path from the string s at x, y

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dpi(dpi : Int32)

Sets the current DPI

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dpi

Gets the current DPI

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fill(*paths : Draw::Path)

Fills the paths with the color specified by fill_color

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fill_color(c : Colorize::Color)

Sets the current fill color

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fill_rule(f : Draw::FillRule)

Sets the current fill rule

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fill_string(text : String) : Float64

Draws the text at point (0, 0)

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fill_string_at(text : String, x : Float64, y : Float64) : Float64

Draws the text at the specified point (x, y)

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fill_stroke(*paths : Draw::Path)

First fills the paths and than strokes them

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font_data(font_data : Draw::FontData)

Sets the current FontData

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font_data

Gets the current FontData

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font_name

Gets the current FontData as a string

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font_size(font_size : Float64)

Sets the current font size

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font_size

Gets the current font size

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line_cap(cap : Draw::LineCap)

Sets the current line cap

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line_dash(dash : Array(Float64), dash_offset : Float64)

Sets the current dash

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line_join(join : Draw::LineJoin)

Sets the current line join

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line_width(line_width : Float64)

Sets the current line width

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matrix_transform(tr : Draw::Matrix)

Sets the current transformation matrix

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matrix_transform

Returns the current transformation matrix

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path

Copies the current path, then returns it

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restore

Remove the current context and restore the last one

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save

Draws the raster image in the current canvas abstract def draw_image(image image.Image) Save the context and push it to the context stack

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scale(sx : Float64, sy : Float64)

Applies a scale to the current transformation matrix.

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string_bounds(s : String) : Tuple(Float64, Float64, Float64, Float64)

Gets pixel bounds(dimensions) of given string

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stroke(*paths : Draw::Path)

Strokes the paths with the color specified by stroke_color

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stroke_color(c : Colorize::Color)

Sets the current stroke color

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stroke_string(text : String) : Float64

Draws the contour of the text at point (0, 0)

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stroke_string_at(text : String, x : Float64, y : Float64) : Float64

Draws the contour of the text at point (x, y)

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totate(angle : Float64)

Applies a rotation to the current transformation matrix. angle is in radian.

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translate(tx : Float64, ty : Float64)

Applies a translation to the current transformation matrix.

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