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use winapi::um::winuser::{WS_CHILD, WS_VISIBLE, WS_CLIPCHILDREN, WS_CLIPSIBLINGS};
use crate::win32::base_helper::check_hwnd;
use crate::win32::window_helper as wh;
use crate::NwgError;
use super::{ControlBase, ControlHandle};
use plotters::prelude::DrawingArea;
use plotters::coord::Shift;
pub use crate::win32::plotters_d2d::{PlottersError, PlottersBackend};
use std::ops::Deref;
const NOT_BOUND: &'static str = "Plotters control is not yet bound to a winapi object";
const BAD_HANDLE: &'static str = "INTERNAL ERROR: Plotters control handle is not HWND!";
pub struct PlottersDrawingArea<'a> {
inner: &'a Plotters,
area: DrawingArea<&'a PlottersBackend, Shift>
}
impl<'a> PlottersDrawingArea<'a> {
pub fn new(inner: &'a Plotters) -> Result<PlottersDrawingArea<'a>, PlottersError> {
let backend = inner.d2d_backend.as_ref().unwrap();
backend.rebuild(inner.handle.hwnd().unwrap())?;
backend.begin_draw();
backend.clear();
let area = PlottersDrawingArea {
inner: inner,
area: backend.into(),
};
Ok(area)
}
}
impl<'a> Deref for PlottersDrawingArea<'a> {
type Target = DrawingArea<&'a PlottersBackend, Shift>;
fn deref(&self) -> &Self::Target {
&self.area
}
}
impl<'a> Drop for PlottersDrawingArea<'a> {
fn drop(&mut self) {
self.inner.d2d_backend.as_ref()
.unwrap()
.end_draw();
}
}
#[derive(Default)]
pub struct Plotters {
pub handle: ControlHandle,
d2d_backend: Option<PlottersBackend>,
}
impl Plotters {
pub fn builder() -> PlottersBuilder {
PlottersBuilder {
size: (500, 500),
position: (0, 0),
ex_flags: 0,
parent: None,
}
}
pub fn draw<'a>(&'a self) -> Result<PlottersDrawingArea<'a>, PlottersError> {
check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
PlottersDrawingArea::new(self)
}
pub fn focus(&self) -> bool {
let handle = check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
unsafe { wh::get_focus(handle) }
}
pub fn set_focus(&self) {
let handle = check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
unsafe { wh::set_focus(handle); }
}
pub fn enabled(&self) -> bool {
let handle = check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
unsafe { wh::get_window_enabled(handle) }
}
pub fn set_enabled(&self, v: bool) {
let handle = check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
unsafe { wh::set_window_enabled(handle, v) }
}
pub fn visible(&self) -> bool {
let handle = check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
unsafe { wh::get_window_visibility(handle) }
}
pub fn set_visible(&self, v: bool) {
let handle = check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
unsafe { wh::set_window_visibility(handle, v) }
}
pub fn size(&self) -> (u32, u32) {
let handle = check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
unsafe { wh::get_window_size(handle) }
}
pub fn physical_size(&self) -> (u32, u32) {
let handle = check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
unsafe { wh::get_window_physical_size(handle) }
}
pub fn set_size(&self, x: u32, y: u32) {
let handle = check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
unsafe { wh::set_window_size(handle, x, y, true) }
}
pub fn position(&self) -> (i32, i32) {
let handle = check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
unsafe { wh::get_window_position(handle) }
}
pub fn set_position(&self, x: i32, y: i32) {
let handle = check_hwnd(&self.handle, NOT_BOUND, BAD_HANDLE);
unsafe { wh::set_window_position(handle, x, y) }
}
pub fn class_name(&self) -> &'static str {
"NWG_EXTERN_CANVAS"
}
pub fn flags(&self) -> u32 {
WS_CHILD | WS_VISIBLE
}
pub fn forced_flags(&self) -> u32 {
WS_CLIPCHILDREN | WS_CLIPSIBLINGS
}
}
impl PartialEq for Plotters {
fn eq(&self, other: &Self) -> bool {
self.handle == other.handle
}
}
pub struct PlottersBuilder {
parent: Option<ControlHandle>,
size: (i32, i32),
position: (i32, i32),
ex_flags: u32,
}
impl PlottersBuilder {
pub fn ex_flags(mut self, flags: u32) -> PlottersBuilder {
self.ex_flags = flags;
self
}
pub fn size(mut self, size: (i32, i32)) -> PlottersBuilder {
self.size = size;
self
}
pub fn position(mut self, pos: (i32, i32)) -> PlottersBuilder {
self.position = pos;
self
}
pub fn parent<C: Into<ControlHandle>>(mut self, p: C) -> PlottersBuilder {
self.parent = Some(p.into());
self
}
pub fn build(self, out: &mut Plotters) -> Result<(), NwgError> {
*out = Default::default();
out.handle = ControlBase::build_hwnd()
.class_name(out.class_name())
.forced_flags(out.forced_flags())
.flags(out.flags())
.ex_flags(self.ex_flags)
.size(self.size)
.position(self.position)
.text("")
.parent(self.parent)
.build()?;
let handle = out.handle.hwnd().unwrap();
match PlottersBackend::init(handle) {
Ok(b) => {
out.d2d_backend = Some(b);
Ok(())
},
Err(e) => {
*out = Default::default();
Err(NwgError::from(e))
}
}
}
}