Struct ExampleRenderBackend 

pub struct ExampleRenderBackend { /* private fields */ }

渲染系统相关功能 示例渲染后端

Implementations

impl ExampleRenderBackend

pub fn new() -> Self

创建新的示例渲染后端

返回值

示例渲染后端实例

Trait Implementations

impl Debug for ExampleRenderBackend

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl RenderBackend for ExampleRenderBackend

fn initialize(&mut self) -> Result<(), Box<dyn Error>>

初始化渲染后端

fn cleanup(&mut self)

清理渲染后端

fn begin_frame(&mut self)

开始渲染帧

fn end_frame(&mut self)

结束渲染帧

fn render_component( &mut self, component: &Component, x: f32, y: f32, width: f32, height: f32, )

渲染组件

fn draw_rect(&mut self, x: f32, y: f32, width: f32, height: f32, _style: &Style)

绘制矩形

fn draw_text(&mut self, text: &str, x: f32, y: f32, _style: &Style)

绘制文本

fn measure_text(&mut self, text: &str, _style: &Style) -> (f32, f32)

测量文本尺寸