364 lines
14 KiB
Rust
364 lines
14 KiB
Rust
use crate::format::{Format, ARGB8888};
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use crate::ifs::wl_buffer::WlBuffer;
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use crate::ifs::wl_surface::xdg_surface::XdgSurface;
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use crate::ifs::wl_surface::WlSurface;
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use crate::rect::Rect;
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use crate::render::gl::frame_buffer::{with_scissor, GlFrameBuffer};
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use crate::render::gl::sys::{
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glActiveTexture, glBindTexture, glDisableVertexAttribArray, glDrawArrays,
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glEnableVertexAttribArray, glTexParameteri, glUniform1i, glUniform4f, glUseProgram,
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glVertexAttribPointer, GL_FALSE, GL_FLOAT, GL_LINEAR, GL_TEXTURE0, GL_TEXTURE_2D,
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GL_TEXTURE_MIN_FILTER, GL_TRIANGLES, GL_TRIANGLE_STRIP,
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};
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use crate::render::renderer::context::RenderContext;
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use crate::render::sys::{glDisable, glEnable, GL_BLEND};
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use crate::render::Texture;
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use crate::tree::{
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ContainerFocus, ContainerNode, ContainerSplit, FloatNode, OutputNode, WorkspaceNode,
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};
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use crate::{State};
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use std::ops::Deref;
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use std::rc::Rc;
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use std::slice;
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const NON_COLOR: (f32, f32, f32) = (0.2, 0.2, 0.2);
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const CHILD_COLOR: (f32, f32, f32) = (0.8, 0.8, 0.8);
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const YES_COLOR: (f32, f32, f32) = (0.0, 0.0, 1.0);
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fn focus_color(focus: ContainerFocus) -> (f32, f32, f32) {
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match focus {
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ContainerFocus::None => NON_COLOR,
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ContainerFocus::Child => CHILD_COLOR,
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ContainerFocus::Yes => YES_COLOR,
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}
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}
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pub struct Renderer<'a> {
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pub(super) ctx: &'a Rc<RenderContext>,
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pub(super) fb: &'a GlFrameBuffer,
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pub(super) state: &'a State,
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}
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impl Renderer<'_> {
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pub fn render_output(&mut self, output: &OutputNode, x: i32, y: i32) {
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if let Some(ws) = output.workspace.get() {
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self.render_workspace(&ws, x, y);
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}
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}
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pub fn render_workspace(&mut self, workspace: &WorkspaceNode, x: i32, y: i32) {
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if let Some(node) = workspace.container.get() {
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self.render_container(&node, x, y)
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}
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for stacked in workspace.stacked.iter() {
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let pos = stacked.absolute_position();
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stacked.render(self, pos.x1(), pos.y1());
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}
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}
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fn x_to_f(&self, x: i32) -> f32 {
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2.0 * (x as f32 / self.fb.width as f32) - 1.0
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}
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fn y_to_f(&self, y: i32) -> f32 {
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2.0 * (y as f32 / self.fb.height as f32) - 1.0
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}
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fn fill_boxes(&self, boxes: &[Rect], r: f32, g: f32, b: f32, a: f32) {
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if boxes.is_empty() {
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return;
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}
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let mut pos = Vec::with_capacity(boxes.len() * 12);
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for bx in boxes {
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let x1 = self.x_to_f(bx.x1());
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let y1 = self.y_to_f(bx.y1());
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let x2 = self.x_to_f(bx.x2());
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let y2 = self.y_to_f(bx.y2());
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pos.extend_from_slice(&[
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// triangle 1
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x2, y1, // top right
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x1, y1, // top left
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x1, y2, // bottom left
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// triangle 2
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x2, y1, // top right
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x1, y2, // bottom left
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x2, y2, // bottom right
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]);
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}
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unsafe {
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glUseProgram(self.ctx.fill_prog.prog);
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glUniform4f(self.ctx.fill_prog_color, r, g, b, a);
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glVertexAttribPointer(
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self.ctx.fill_prog_pos as _,
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2,
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GL_FLOAT,
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GL_FALSE,
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0,
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pos.as_ptr() as _,
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);
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glEnableVertexAttribArray(self.ctx.fill_prog_pos as _);
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glDrawArrays(GL_TRIANGLES, 0, (boxes.len() * 6) as _);
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glDisableVertexAttribArray(self.ctx.fill_prog_pos as _);
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}
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}
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pub fn render_container(&mut self, container: &ContainerNode, x: i32, y: i32) {
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let border_width = self.state.theme.border_width.get();
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let title_height = self.state.theme.title_height.get();
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let cwidth = container.width.get();
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let cheight = container.height.get();
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let num_children = container.num_children();
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let title_rect = Rect::new_sized(x, y, container.width.get(), title_height).unwrap();
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let underline_rect =
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Rect::new_sized(x, y + title_height, container.width.get(), 1).unwrap();
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let mut titles = vec![];
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if let Some(child) = container.mono_child.get() {
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let space_per_child = cwidth / num_children as i32;
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let mut rem = cwidth % num_children as i32;
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let mut pos = x;
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let (r, g, b) = focus_color(ContainerFocus::None);
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self.fill_boxes(slice::from_ref(&title_rect), r, g, b, 1.0);
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let c = self.state.theme.border_color.get();
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self.fill_boxes(slice::from_ref(&underline_rect), c.r, c.g, c.b, c.a);
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for child in container.children.iter() {
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let focus = child.focus.get();
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let (r, g, b) = focus_color(focus);
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let mut width = space_per_child;
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if rem > 0 {
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rem -= 1;
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width += 1;
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}
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if let Some(title) = child.title_texture.get() {
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titles.push((
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pos,
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0,
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title,
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));
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}
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if focus != ContainerFocus::None {
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let rect = Rect::new_sized(pos, y, width, title_height).unwrap();
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self.fill_boxes(slice::from_ref(&rect), r, g, b, 1.0);
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}
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pos += width as i32;
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}
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unsafe {
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with_scissor(&container.mono_body.get(), || {
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let content = container.mono_content.get();
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child.node.render(self, x + content.x1(), y + content.y1());
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});
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}
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} else {
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let split = container.split.get();
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let num_title_rects = if split == ContainerSplit::Horizontal {
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1
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} else {
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num_children
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};
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let mut title_rects = Vec::with_capacity(num_title_rects);
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let mut underline_rects = Vec::with_capacity(num_title_rects);
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let mut border_rects = Vec::with_capacity(num_children - 1);
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let mut active_rects = Vec::new();
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title_rects.push(title_rect);
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underline_rects.push(underline_rect);
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for (i, child) in container.children.iter().enumerate() {
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let body = child.body.get();
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if let Some(title) = child.title_texture.get() {
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titles.push((
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body.x1(),
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body.y1() - title_height - 1,
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title,
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));
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}
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if child.active.get() {
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active_rects.push(
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Rect::new_sized(
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x + body.x1(),
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y + body.y1() - title_height - 1,
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body.width(),
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title_height,
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)
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.unwrap(),
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);
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}
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if i + 1 < num_children {
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let border_rect = if split == ContainerSplit::Horizontal {
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Rect::new_sized(
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x + body.x2(),
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y + body.y1() - title_height - 1,
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border_width,
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container.height.get(),
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)
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.unwrap()
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} else {
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title_rects.push(
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Rect::new_sized(
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x,
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y + body.y2() + border_width,
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container.width.get(),
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title_height,
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)
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.unwrap(),
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);
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underline_rects.push(
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Rect::new_sized(
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x,
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y + body.y2() + border_width + title_height,
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container.width.get(),
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1,
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)
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.unwrap(),
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);
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Rect::new_sized(x, y + body.y2(), container.width.get(), border_width)
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.unwrap()
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};
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border_rects.push(border_rect);
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}
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}
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{
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let c = self.state.theme.title_color.get();
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self.fill_boxes(&title_rects, c.r, c.g, c.b, c.a);
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let c = self.state.theme.active_title_color.get();
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self.fill_boxes(&active_rects, c.r, c.g, c.b, c.a);
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let c = self.state.theme.underline_color.get();
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self.fill_boxes(&underline_rects, c.r, c.g, c.b, c.a);
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let c = self.state.theme.border_color.get();
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self.fill_boxes(&border_rects, c.r, c.g, c.b, c.a);
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for (tx, ty, tex) in titles {
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self.render_texture(&tex, x + tx, y + ty, ARGB8888);
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}
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}
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for child in container.children.iter() {
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let body = child.body.get();
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if body.x1() >= cwidth || body.y1() >= cheight {
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break;
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}
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let body = body.move_(container.abs_x1.get(), container.abs_y1.get());
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unsafe {
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with_scissor(&body, || {
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let content = child.content.get();
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child.node.render(self, x + content.x1(), y + content.y1());
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});
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}
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}
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}
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}
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pub fn render_xdg_surface(&mut self, xdg: &XdgSurface, mut x: i32, mut y: i32) {
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let surface = &xdg.surface;
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if let Some(geo) = xdg.geometry() {
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let (xt, yt) = geo.translate(x, y);
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x = xt;
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y = yt;
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}
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self.render_surface(surface, x, y);
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}
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pub fn render_surface(&mut self, surface: &WlSurface, x: i32, y: i32) {
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let children = surface.children.borrow();
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let buffer = match surface.buffer.get() {
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Some(b) => b,
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_ => {
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if !surface.is_cursor() {
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log::warn!("surface has no buffer attached");
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}
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return;
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}
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};
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if let Some(children) = children.deref() {
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macro_rules! render {
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($children:expr) => {
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for child in $children.rev_iter() {
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if child.pending.get() {
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continue;
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}
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let pos = child.sub_surface.position.get();
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self.render_surface(&child.sub_surface.surface, x + pos.x1(), y + pos.y1());
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}
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};
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}
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render!(&children.below);
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self.render_buffer(&buffer, x, y);
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render!(&children.above);
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} else {
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self.render_buffer(&buffer, x, y);
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}
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let mut fr = surface.frame_requests.borrow_mut();
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for cb in fr.drain(..) {
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surface.client.dispatch_frame_requests.push(cb);
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}
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}
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pub fn render_buffer(&mut self, buffer: &WlBuffer, x: i32, y: i32) {
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if let Some(tex) = buffer.texture.get() {
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self.render_texture(&tex, x, y, buffer.format);
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}
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}
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pub fn render_texture(&mut self, texture: &Texture, x: i32, y: i32, format: &Format) {
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assert!(Rc::ptr_eq(&self.ctx.ctx, &texture.ctx.ctx));
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unsafe {
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, texture.gl.tex);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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let prog = match format.has_alpha {
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true => {
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glEnable(GL_BLEND);
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&self.ctx.tex_alpha_prog
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}
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false => {
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glDisable(GL_BLEND);
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&self.ctx.tex_prog
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}
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};
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glUseProgram(prog.prog.prog);
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glUniform1i(prog.tex, 0);
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let texcoord: [f32; 8] = [1.0, 0.0, 0.0, 0.0, 1.0, 1.0, 0.0, 1.0];
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let f_width = self.fb.width as f32;
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let f_height = self.fb.height as f32;
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let x1 = 2.0 * (x as f32 / f_width) - 1.0;
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let y1 = 2.0 * (y as f32 / f_height) - 1.0;
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let x2 = 2.0 * ((x + texture.gl.width) as f32 / f_width) - 1.0;
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let y2 = 2.0 * ((y + texture.gl.height) as f32 / f_height) - 1.0;
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let pos: [f32; 8] = [
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x2, y1, // top right
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x1, y1, // top left
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x2, y2, // bottom right
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x1, y2, // bottom left
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];
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glVertexAttribPointer(
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prog.texcoord as _,
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2,
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GL_FLOAT,
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GL_FALSE,
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0,
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texcoord.as_ptr() as _,
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);
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glVertexAttribPointer(prog.pos as _, 2, GL_FLOAT, GL_FALSE, 0, pos.as_ptr() as _);
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glEnableVertexAttribArray(prog.texcoord as _);
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glEnableVertexAttribArray(prog.pos as _);
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glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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glDisableVertexAttribArray(prog.texcoord as _);
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glDisableVertexAttribArray(prog.pos as _);
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glBindTexture(GL_TEXTURE_2D, 0);
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}
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}
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pub fn render_floating(&mut self, floating: &FloatNode, x: i32, y: i32) {
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if let Some(child) = floating.child.get() {
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child.render(self, x, y)
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}
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}
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}
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