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Trait penrose::draw::DrawContext[−][src]

pub trait DrawContext {
    fn font(&mut self, font_name: &str, point_size: i32) -> Result<()>;

    fn color(&mut self, color: &Color);

    fn clear(&mut self);

    fn translate(&self, dx: f64, dy: f64);

    fn set_x_offset(&self, x: f64);

    fn set_y_offset(&self, y: f64);

    fn rectangle(&self, x: f64, y: f64, w: f64, h: f64);

    fn text(
        &self, 
        s: &str, 
        h_offset: f64, 
        padding: (f64, f64)
    ) -> Result<(f64, f64)>;

    fn text_extent(&self, s: &str) -> Result<(f64, f64)>;

    fn flush(&self);
}
Expand description

Used for simple drawing to the screen

Required methods

Set the active font, must have been registered on the partent Draw

Set the color used for subsequent drawing operations

Clears the context

Translate this context by (dx, dy) from its current position

Set the x offset for this context absolutely

Set the y offset for this context absolutely

Draw a filled rectangle using the current color

Render ‘s’ using the current font with the supplied padding. returns the extent taken up by the rendered text

Determine the pixel width of a given piece of text using the current font

Flush pending actions

Implementors