90 lines
2.7 KiB
Rust
90 lines
2.7 KiB
Rust
use crate::{
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render::{DrawContext, DrawInstruction},
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View,
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};
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pub fn x_center(ctx: &mut DrawContext, _view: &View) {
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ctx.allocated.y = (ctx.area.height - ctx.allocated.height) / 2;
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}
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pub fn y_center(ctx: &mut DrawContext, _view: &View) {
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ctx.allocated.y = (ctx.area.height - ctx.allocated.height) / 2;
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}
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pub fn center(ctx: &mut DrawContext, _view: &View) {
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ctx.allocated.x = (ctx.area.width - ctx.allocated.width) / 2;
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ctx.allocated.y = (ctx.area.height - ctx.allocated.height) / 2;
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}
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pub fn size_auto(ctx: &mut DrawContext, _view: &View) {
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for i in &ctx.drawing {
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match i {
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DrawInstruction::Text(_, text) => {
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let mut height = 0;
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for line in text.lines() {
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ctx.allocated.width = ctx.allocated.width.max(line.len() as u16);
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height += 1;
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}
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ctx.allocated.height = height;
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}
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DrawInstruction::View(area, view) => {
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let mut c = DrawContext::new(area.clone());
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view(&mut c);
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size_auto(&mut c, view);
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ctx.allocated.width = c.allocated.width;
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ctx.allocated.height = c.allocated.height;
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}
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DrawInstruction::Child(_, _) => {}
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}
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}
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}
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pub fn width_auto(ctx: &mut DrawContext, _view: &View) {
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for i in &ctx.drawing {
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match i {
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DrawInstruction::Text(_, text) => {
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for line in text.lines() {
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ctx.allocated.width = ctx.allocated.width.max(line.len() as u16);
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}
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}
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DrawInstruction::View(area, view) => {
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let mut c = DrawContext::new(area.clone());
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view(&mut c);
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size_auto(&mut c, view);
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ctx.allocated.width = c.allocated.width;
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}
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DrawInstruction::Child(_, _) => {}
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}
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}
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}
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pub fn height_auto(ctx: &mut DrawContext, _view: &View) {
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for i in &ctx.drawing {
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match i {
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DrawInstruction::Text(_, text) => {
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let mut height = 0;
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for _ in text.lines() {
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height += 1;
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}
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ctx.allocated.height = height;
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}
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DrawInstruction::View(area, view) => {
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let mut c = DrawContext::new(area.clone());
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view(&mut c);
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size_auto(&mut c, view);
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ctx.allocated.height = c.allocated.height;
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}
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DrawInstruction::Child(_, _) => {}
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}
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}
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}
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pub fn redraw(ctx: &mut DrawContext, view: &View) {
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ctx.clear();
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ctx.draw_view(ctx.allocated.clone(), view.clone());
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}
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