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#![allow(non_snake_case, non_upper_case_globals)]
use std::mem;
use std::slice;
use std::sync::atomic::AtomicUsize;
use winapi::shared::guiddef::REFIID;
use winapi::shared::minwindef::{UINT, ULONG};
use winapi::shared::winerror::S_OK;
use winapi::um::d2d1::{ID2D1SimplifiedGeometrySink, ID2D1SimplifiedGeometrySinkVtbl};
use winapi::um::d2d1::{D2D1_BEZIER_SEGMENT, D2D1_FIGURE_BEGIN, D2D1_FIGURE_END};
use winapi::um::d2d1::{D2D1_FIGURE_END_CLOSED, D2D1_FILL_MODE, D2D1_PATH_SEGMENT, D2D1_POINT_2F};
use winapi::um::unknwnbase::{IUnknown, IUnknownVtbl};
use winapi::um::winnt::HRESULT;
use crate::com_helpers::Com;
use crate::outline_builder::OutlineBuilder;
static GEOMETRY_SINK_VTBL: ID2D1SimplifiedGeometrySinkVtbl = ID2D1SimplifiedGeometrySinkVtbl {
parent: implement_iunknown!(static ID2D1SimplifiedGeometrySink, GeometrySinkImpl),
BeginFigure: GeometrySinkImpl_BeginFigure,
EndFigure: GeometrySinkImpl_EndFigure,
AddLines: GeometrySinkImpl_AddLines,
AddBeziers: GeometrySinkImpl_AddBeziers,
Close: GeometrySinkImpl_Close,
SetFillMode: GeometrySinkImpl_SetFillMode,
SetSegmentFlags: GeometrySinkImpl_SetSegmentFlags,
};
#[repr(C)]
pub struct GeometrySinkImpl {
// NB: This must be the first field.
_refcount: AtomicUsize,
outline_builder: Box<dyn OutlineBuilder>,
}
impl Com<ID2D1SimplifiedGeometrySink> for GeometrySinkImpl {
type Vtbl = ID2D1SimplifiedGeometrySinkVtbl;
#[inline]
fn vtbl() -> &'static ID2D1SimplifiedGeometrySinkVtbl {
&GEOMETRY_SINK_VTBL
}
}
impl Com<IUnknown> for GeometrySinkImpl {
type Vtbl = IUnknownVtbl;
#[inline]
fn vtbl() -> &'static IUnknownVtbl {
&GEOMETRY_SINK_VTBL.parent
}
}
impl GeometrySinkImpl {
pub fn new(outline_builder: Box<dyn OutlineBuilder>) -> GeometrySinkImpl {
GeometrySinkImpl {
_refcount: AtomicUsize::new(1),
outline_builder,
}
}
}
unsafe extern "system" fn GeometrySinkImpl_BeginFigure(
this: *mut ID2D1SimplifiedGeometrySink,
start_point: D2D1_POINT_2F,
_: D2D1_FIGURE_BEGIN,
) {
let this = GeometrySinkImpl::from_interface(this);
(*this)
.outline_builder
.move_to(start_point.x, start_point.y)
}
unsafe extern "system" fn GeometrySinkImpl_EndFigure(
this: *mut ID2D1SimplifiedGeometrySink,
figure_end: D2D1_FIGURE_END,
) {
let this = GeometrySinkImpl::from_interface(this);
if figure_end == D2D1_FIGURE_END_CLOSED {
(*this).outline_builder.close()
}
}
unsafe extern "system" fn GeometrySinkImpl_AddLines(
this: *mut ID2D1SimplifiedGeometrySink,
points: *const D2D1_POINT_2F,
points_count: UINT,
) {
let this = GeometrySinkImpl::from_interface(this);
let points = slice::from_raw_parts(points, points_count as usize);
for point in points {
(*this).outline_builder.line_to(point.x, point.y)
}
}
unsafe extern "system" fn GeometrySinkImpl_AddBeziers(
this: *mut ID2D1SimplifiedGeometrySink,
beziers: *const D2D1_BEZIER_SEGMENT,
beziers_count: UINT,
) {
let this = GeometrySinkImpl::from_interface(this);
let beziers = slice::from_raw_parts(beziers, beziers_count as usize);
for bezier in beziers {
(*this).outline_builder.curve_to(
bezier.point1.x,
bezier.point1.y,
bezier.point2.x,
bezier.point2.y,
bezier.point3.x,
bezier.point3.y,
)
}
}
unsafe extern "system" fn GeometrySinkImpl_Close(_: *mut ID2D1SimplifiedGeometrySink) -> HRESULT {
S_OK
}
unsafe extern "system" fn GeometrySinkImpl_SetFillMode(
_: *mut ID2D1SimplifiedGeometrySink,
_: D2D1_FILL_MODE,
) {
}
unsafe extern "system" fn GeometrySinkImpl_SetSegmentFlags(
_: *mut ID2D1SimplifiedGeometrySink,
_: D2D1_PATH_SEGMENT,
) {
}
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