migrations/egui
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[app] Add demo app slider to change scale of all of Egui

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This commit is contained in:
Emil Ernerfeldt
2020-10-17 23:54:46 +02:00
parent 251cde60f0
commit a4e19d7207
9 changed files with 149 additions and 85 deletions
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33
egui_glium/src/painter.rs
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@@ -152,16 +152,23 @@ impl Painter {
pub fn paint_jobs(
&mut self,
display: &glium::Display,
pixels_per_point: f32,
jobs: PaintJobs,
texture: &egui::Texture,
egui_texture: &egui::Texture,
) {
self.upload_egui_texture(display, texture);
self.upload_egui_texture(display, egui_texture);
self.upload_pending_user_textures(display);
let mut target = display.draw();
target.clear_color(0.0, 0.0, 0.0, 0.0);
for (clip_rect, triangles) in jobs {
self.paint_job(&mut target, display, clip_rect, &triangles)
self.paint_job(
&mut target,
display,
pixels_per_point,
clip_rect,
&triangles,
)
}
target.finish().unwrap();
}
@@ -183,6 +190,7 @@ impl Painter {
&mut self,
target: &mut Frame,
display: &glium::Display,
pixels_per_point: f32,
clip_rect: Rect,
triangles: &Triangles,
) {
@@ -217,15 +225,14 @@ impl Painter {
let index_buffer =
glium::IndexBuffer::new(display, PrimitiveType::TrianglesList, &indices).unwrap();
let pixels_per_point = display.gl_window().window().scale_factor() as f32;
let (width_pixels, height_pixels) = display.get_framebuffer_dimensions();
let width_points = width_pixels as f32 / pixels_per_point;
let height_points = height_pixels as f32 / pixels_per_point;
let (width_in_pixels, height_in_pixels) = display.get_framebuffer_dimensions();
let width_in_points = width_in_pixels as f32 / pixels_per_point;
let height_in_points = height_in_pixels as f32 / pixels_per_point;
let texture = self.get_texture(triangles.texture_id);
let uniforms = uniform! {
u_screen_size: [width_points, height_points],
u_screen_size: [width_in_points, height_in_points],
u_sampler: texture.sampled().wrap_function(SamplerWrapFunction::Clamp),
};
@@ -255,10 +262,10 @@ impl Painter {
let clip_max_y = pixels_per_point * clip_rect.max.y;
// Make sure clip rect can fit withing an `u32`:
let clip_min_x = clamp(clip_min_x, 0.0..=width_pixels as f32);
let clip_min_y = clamp(clip_min_y, 0.0..=height_pixels as f32);
let clip_max_x = clamp(clip_max_x, clip_min_x..=width_pixels as f32);
let clip_max_y = clamp(clip_max_y, clip_min_y..=height_pixels as f32);
let clip_min_x = clamp(clip_min_x, 0.0..=width_in_pixels as f32);
let clip_min_y = clamp(clip_min_y, 0.0..=height_in_pixels as f32);
let clip_max_x = clamp(clip_max_x, clip_min_x..=width_in_pixels as f32);
let clip_max_y = clamp(clip_max_y, clip_min_y..=height_in_pixels as f32);
let clip_min_x = clip_min_x.round() as u32;
let clip_min_y = clip_min_y.round() as u32;
@@ -269,7 +276,7 @@ impl Painter {
blend,
scissor: Some(glium::Rect {
left: clip_min_x,
bottom: height_pixels - clip_max_y,
bottom: height_in_pixels - clip_max_y,
width: clip_max_x - clip_min_x,
height: clip_max_y - clip_min_y,
}),