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Add a public getter for DrawData cmd_lists_count member

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Also updated DrawData docs with latest from imgui.

Relates to https://github.com/Gekkio/imgui-rs/issues/325
This commit is contained in:
Philippe Renon 2020-05-23 15:36:26 +02:00
parent bcf7669ae3
commit 5e5de53904
1 changed files with 12 additions and 4 deletions
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16
src/render/draw_data.rs
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@ -4,15 +4,18 @@ use crate::internal::{RawCast, RawWrapper};
use crate::render::renderer::TextureId;
use crate::sys;
/// All draw data required to render a frame.
/// All draw data to render a Dear ImGui frame.
#[repr(C)]
pub struct DrawData {
/// Only valid after render() is called and before the next new frame() is called.
valid: bool,
// Array of DrawList.
cmd_lists: *mut *mut DrawList,
/// Number of DrawList to render.
cmd_lists_count: i32,
/// For convenience, sum of all draw list index buffer sizes
/// For convenience, sum of all draw list index buffer sizes.
pub total_idx_count: i32,
/// For convenience, sum of all draw list vertex buffer sizes
/// For convenience, sum of all draw list vertex buffer sizes.
pub total_vtx_count: i32,
/// Upper-left position of the viewport to render.
///
@ -32,7 +35,7 @@ pub struct DrawData {
unsafe impl RawCast<sys::ImDrawData> for DrawData {}
impl DrawData {
/// Returns an iterator over the draw lists included in the draw data
/// Returns an iterator over the draw lists included in the draw data.
pub fn draw_lists(&self) -> DrawListIterator {
unsafe {
DrawListIterator {
@ -40,6 +43,11 @@ impl DrawData {
}
}
}
/// Returns the number of draw lists included in the draw data.
pub fn draw_lists_count(&self) -> usize {
use std::convert::TryInto;
self.cmd_lists_count.try_into().unwrap()
}
pub(crate) unsafe fn cmd_lists(&self) -> &[*const DrawList] {
slice::from_raw_parts(
self.cmd_lists as *const *const DrawList,