pub struct State<'a>(_);
Expand description
A graphics state guard.
Used to automatically restore a previous saved graphics attributes state.
Methods from Deref<Target = Graphics>
sourcepub fn save_state(&mut self) -> Result<State<'_>>
pub fn save_state(&mut self) -> Result<State<'_>>
Save the current graphics attributes on top of the internal state stack.
It will be restored automatically.
Example:
use sciter::graphics::{Image, rgb};
let mut image = Image::new((100, 100), false).unwrap();
image.paint(|gfx, size| {
let mut gfx = gfx.save_state()?;
gfx
.line_width(6.0)?
.line_color(rgb(0xD4, 0, 0))?
.fill_color(rgb(0xD4, 0, 0))?
.line((-30., 0.), (83., 0.))?
;
Ok(())
}).unwrap();
sourcepub fn line(&mut self, start: Pos, end: Pos) -> Result<&mut Self>
pub fn line(&mut self, start: Pos, end: Pos) -> Result<&mut Self>
Draw a line from the start
to the end
.
sourcepub fn rectangle(
&mut self,
left_top: Pos,
right_bottom: Pos
) -> Result<&mut Self>
pub fn rectangle(
&mut self,
left_top: Pos,
right_bottom: Pos
) -> Result<&mut Self>
Draw a rectangle.
sourcepub fn round_rect(
&mut self,
left_top: Pos,
right_bottom: Pos,
radius: Dim
) -> Result<&mut Self>
pub fn round_rect(
&mut self,
left_top: Pos,
right_bottom: Pos,
radius: Dim
) -> Result<&mut Self>
Draw a rounded rectangle with the same corners.
sourcepub fn round_rect4(
&mut self,
left_top: Pos,
right_bottom: Pos,
radius: (Dim, Dim, Dim, Dim)
) -> Result<&mut Self>
pub fn round_rect4(
&mut self,
left_top: Pos,
right_bottom: Pos,
radius: (Dim, Dim, Dim, Dim)
) -> Result<&mut Self>
Draw a rounded rectangle with different corners.
sourcepub fn arc(
&mut self,
xy: Pos,
rxy: Pos,
start: Angle,
sweep: Angle
) -> Result<&mut Self>
pub fn arc(
&mut self,
xy: Pos,
rxy: Pos,
start: Angle,
sweep: Angle
) -> Result<&mut Self>
Draw a closed arc.
sourcepub fn fill_color(&mut self, color: Color) -> Result<&mut Self>
pub fn fill_color(&mut self, color: Color) -> Result<&mut Self>
Set the color for solid fills for subsequent drawings.
sourcepub fn fill_mode(&mut self, is_even: bool) -> Result<&mut Self>
pub fn fill_mode(&mut self, is_even: bool) -> Result<&mut Self>
Set the even/odd rule of solid fills for subsequent drawings.
false
means “fill non zero”.
sourcepub fn no_fill(&mut self) -> Result<&mut Self>
pub fn no_fill(&mut self) -> Result<&mut Self>
Disables fills for subsequent drawing operations.
sourcepub fn line_color(&mut self, color: Color) -> Result<&mut Self>
pub fn line_color(&mut self, color: Color) -> Result<&mut Self>
Set the line color for subsequent drawings.
sourcepub fn line_width(&mut self, width: Dim) -> Result<&mut Self>
pub fn line_width(&mut self, width: Dim) -> Result<&mut Self>
Set the line width for subsequent drawings.
sourcepub fn line_cap(&mut self, style: LINE_CAP) -> Result<&mut Self>
pub fn line_cap(&mut self, style: LINE_CAP) -> Result<&mut Self>
Set the line cap mode (stroke dash ending style) for subsequent drawings.
It determines how the end points of every line are drawn.
There are three possible values for this property and those are: BUTT
, ROUND
and SQUARE
.
By default this property is set to BUTT
.
sourcepub fn line_join(&mut self, style: LINE_JOIN) -> Result<&mut Self>
pub fn line_join(&mut self, style: LINE_JOIN) -> Result<&mut Self>
Set the line join mode for subsequent drawings.
It determines how two connecting segments (of lines, arcs or curves) with non-zero lengths in a shape are joined together (degenerate segments with zero lengths, whose specified endpoints and control points are exactly at the same position, are skipped).
sourcepub fn line_linear_gradient(
&mut self,
start: Pos,
end: Pos,
c1: Color,
c2: Color
) -> Result<&mut Self>
pub fn line_linear_gradient(
&mut self,
start: Pos,
end: Pos,
c1: Color,
c2: Color
) -> Result<&mut Self>
Setup parameters of a linear gradient of lines.
sourcepub fn line_linear_gradients(
&mut self,
start: Pos,
end: Pos,
colors: &[(Color, Dim)]
) -> Result<&mut Self>
pub fn line_linear_gradients(
&mut self,
start: Pos,
end: Pos,
colors: &[(Color, Dim)]
) -> Result<&mut Self>
Setup parameters of a linear gradient of lines using multiple colors and color stop positions (0.0 ... 1.0)
.
sourcepub fn fill_linear_gradient(
&mut self,
c1: Color,
c2: Color,
start: Pos,
end: Pos
) -> Result<&mut Self>
pub fn fill_linear_gradient(
&mut self,
c1: Color,
c2: Color,
start: Pos,
end: Pos
) -> Result<&mut Self>
Setup parameters of linear gradient fills.
sourcepub fn fill_linear_gradients(
&mut self,
colors: &[(Color, Dim)],
start: Pos,
end: Pos
) -> Result<&mut Self>
pub fn fill_linear_gradients(
&mut self,
colors: &[(Color, Dim)],
start: Pos,
end: Pos
) -> Result<&mut Self>
Setup parameters of linear gradient fills using multiple colors and color stop positions (0.0 ... 1.0)
.
sourcepub fn line_radial_gradient(
&mut self,
point: Pos,
radii: (Dim, Dim),
c1: Color,
c2: Color
) -> Result<&mut Self>
pub fn line_radial_gradient(
&mut self,
point: Pos,
radii: (Dim, Dim),
c1: Color,
c2: Color
) -> Result<&mut Self>
Setup parameters of a radial gradient of lines.
sourcepub fn line_radial_gradients(
&mut self,
point: Pos,
radii: (Dim, Dim),
colors: &[(Color, Dim)]
) -> Result<&mut Self>
pub fn line_radial_gradients(
&mut self,
point: Pos,
radii: (Dim, Dim),
colors: &[(Color, Dim)]
) -> Result<&mut Self>
Setup parameters of a radial gradient of lines using multiple colors and color stop positions (0.0 ... 1.0)
.
sourcepub fn rotate(&mut self, radians: Angle) -> Result<&mut Self>
pub fn rotate(&mut self, radians: Angle) -> Result<&mut Self>
Rotate coordinate system on radians
angle.
sourcepub fn rotate_around(
&mut self,
radians: Angle,
center: Pos
) -> Result<&mut Self>
pub fn rotate_around(
&mut self,
radians: Angle,
center: Pos
) -> Result<&mut Self>
Rotate coordinate system on radians
angle around the center
.
sourcepub fn translate(&mut self, to_xy: Pos) -> Result<&mut Self>
pub fn translate(&mut self, to_xy: Pos) -> Result<&mut Self>
Move origin of coordinate system to the (to_x, to_y)
point.
sourcepub fn scale(&mut self, sc_xy: Pos) -> Result<&mut Self>
pub fn scale(&mut self, sc_xy: Pos) -> Result<&mut Self>
Scale coordinate system.
(sc_x, sc_y)
are the scale factors in the horizontal and vertical directions respectively.
Both parameters must be positive numbers.
Values smaller than 1.0
reduce the unit size and values larger than 1.0
increase the unit size.
sourcepub fn skew(&mut self, sh_xy: Pos) -> Result<&mut Self>
pub fn skew(&mut self, sh_xy: Pos) -> Result<&mut Self>
Setup a skewing (shearing) transformation.
sourcepub fn transform(
&mut self,
scale_by: Pos,
skew_by: Pos,
move_to: Pos
) -> Result<&mut Self>
pub fn transform(
&mut self,
scale_by: Pos,
skew_by: Pos,
move_to: Pos
) -> Result<&mut Self>
Multiply the current transformation with the matrix described by the arguments.
It allows to scale, rotate, move and skew the context as described by:
scale_x skew_y move_x
[ skew_x scale_y move_y ]
0 0 1
where
scale_x
,scale_y
: horizontal and vertical scaling,skew_x
,skew_y
: horizontal and vertical shearing (skewing),move_x
,move_y
: horizontal and vertical moving.
sourcepub fn transform_matrix(
&mut self,
m11: Dim,
m12: Dim,
m21: Dim,
m22: Dim,
dx: Dim,
dy: Dim
) -> Result<&mut Self>
pub fn transform_matrix(
&mut self,
m11: Dim,
m12: Dim,
m21: Dim,
m22: Dim,
dx: Dim,
dy: Dim
) -> Result<&mut Self>
Multiply the current transformation with the matrix described by the arguments.
It allows to scale, rotate, move and skew the context as described by:
m11 m21 dx
[ m12 m22 dy ]
0 0 1
m11
(scale_x
): horizontal scalingm12
(skew_x
): horizontal skewingm21
(skew_y
): vertical skewingm22
(scale_y
): vertical scalingdx
(move_x
): horizontal movingdy
(move_y
): vertical moving
sourcepub fn world_to_screen(&self, xy: Pos) -> Result<Pos>
pub fn world_to_screen(&self, xy: Pos) -> Result<Pos>
Translate coordinates.
Translates coordinates from a coordinate system defined by rotate()
, scale()
, translate()
and/or skew()
to the screen coordinate system.
sourcepub fn world_to_screen1(&self, length: Dim) -> Result<Dim>
pub fn world_to_screen1(&self, length: Dim) -> Result<Dim>
Translate coordinates.
Translates coordinates from a coordinate system defined by rotate()
, scale()
, translate()
and/or skew()
to the screen coordinate system.
sourcepub fn screen_to_world(&self, xy: Pos) -> Result<Pos>
pub fn screen_to_world(&self, xy: Pos) -> Result<Pos>
Translate coordinates.
Translates coordinates from screen coordinate system to the one defined by rotate()
, scale()
, translate()
and/or skew()
.
sourcepub fn screen_to_world1(&self, length: Dim) -> Result<Dim>
pub fn screen_to_world1(&self, length: Dim) -> Result<Dim>
Translate coordinates.
Translates coordinates from screen coordinate system to the one defined by rotate()
, scale()
, translate()
and/or skew()
.
sourcepub fn push_clip_box(
&mut self,
left_top: Pos,
right_bottom: Pos,
opacity: Option<f32>
) -> Result<&mut Self>
pub fn push_clip_box(
&mut self,
left_top: Pos,
right_bottom: Pos,
opacity: Option<f32>
) -> Result<&mut Self>
Push a clip layer defined by the specified rectangle bounds.
sourcepub fn draw_text(
&mut self,
text: &Text,
pos: Pos,
point_of: u32
) -> Result<&mut Self>
pub fn draw_text(
&mut self,
text: &Text,
pos: Pos,
point_of: u32
) -> Result<&mut Self>
Renders a text layout object at the position (x,y)
.
point_of
: number in the range 1..9
,
defines what part of text layout corresponds to point (x,y)
.
For meaning of numbers see the numeric pad on keyboard.
sourcepub fn draw_path(&mut self, path: &Path, mode: DRAW_PATH) -> Result<&mut Self>
pub fn draw_path(&mut self, path: &Path, mode: DRAW_PATH) -> Result<&mut Self>
Draw the path object using current fill and stroke brushes.
sourcepub fn draw_image(&mut self, image: &Image, pos: Pos) -> Result<&mut Self>
pub fn draw_image(&mut self, image: &Image, pos: Pos) -> Result<&mut Self>
Draw the whole image onto the graphics surface.
With the current transformation applied (scale, rotation).
Performance: expensive.
sourcepub fn draw_image_part(
&mut self,
image: &Image,
dst_pos: Pos,
dst_size: Size,
src_pos: POINT,
src_size: SIZE
) -> Result<&mut Self>
pub fn draw_image_part(
&mut self,
image: &Image,
dst_pos: Pos,
dst_size: Size,
src_pos: POINT,
src_size: SIZE
) -> Result<&mut Self>
Draw a part of the image onto the graphics surface.
With the current transformation applied (scale, rotation).
Performance: expensive.
Trait Implementations
Auto Trait Implementations
impl<'a> RefUnwindSafe for State<'a>
impl<'a> !Send for State<'a>
impl<'a> !Sync for State<'a>
impl<'a> Unpin for State<'a>
impl<'a> !UnwindSafe for State<'a>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more