1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
use std::any::Any;
use std::borrow::Cow;
use std::ops::{Deref, DerefMut};
use super::{StackDst, Theme, Window};
use kas::draw::{color, DrawHandle, DrawIface, DrawSharedImpl, SharedState, SizeHandle, ThemeApi};
use kas::TkAction;
#[cfg_attr(doc_cfg, doc(cfg(feature = "stack_dst")))]
pub enum MaybeBoxed<'a, B: 'a + ?Sized> {
Borrowed(&'a B),
Boxed(Box<B>),
}
impl<T: ?Sized> AsRef<T> for MaybeBoxed<'_, T> {
fn as_ref(&self) -> &T {
match self {
MaybeBoxed::Borrowed(r) => r,
MaybeBoxed::Boxed(b) => b.as_ref(),
}
}
}
#[cfg_attr(doc_cfg, doc(cfg(feature = "stack_dst")))]
pub trait ThemeDst<DS: DrawSharedImpl>: ThemeApi {
fn config(&self) -> MaybeBoxed<dyn Any>;
fn apply_config(&mut self, config: &dyn Any) -> TkAction;
fn init(&mut self, shared: &mut SharedState<DS>);
fn new_window(&self, dpi_factor: f32) -> StackDst<dyn Window>;
fn update_window(&self, window: &mut dyn Window, dpi_factor: f32);
#[cfg(not(feature = "gat"))]
unsafe fn draw_handle(
&self,
draw: DrawIface<DS>,
window: &mut dyn Window,
) -> StackDst<dyn DrawHandle>;
#[cfg(feature = "gat")]
fn draw_handle<'a>(
&'a self,
draw: DrawIface<'a, DS>,
window: &'a mut dyn Window,
) -> StackDst<dyn DrawHandle + 'a>;
fn clear_color(&self) -> color::Rgba;
}
#[cfg(not(feature = "gat"))]
impl<'a, DS: DrawSharedImpl, T: Theme<DS>> ThemeDst<DS> for T
where
<T as Theme<DS>>::DrawHandle: 'static,
{
fn config(&self) -> MaybeBoxed<dyn Any> {
match self.config() {
Cow::Borrowed(config) => MaybeBoxed::Borrowed(config),
Cow::Owned(config) => MaybeBoxed::Boxed(Box::new(config)),
}
}
fn apply_config(&mut self, config: &dyn Any) -> TkAction {
self.apply_config(config.downcast_ref().unwrap())
}
fn init(&mut self, shared: &mut SharedState<DS>) {
self.init(shared);
}
fn new_window(&self, dpi_factor: f32) -> StackDst<dyn Window> {
let window = <T as Theme<DS>>::new_window(self, dpi_factor);
#[cfg(feature = "unsize")]
{
StackDst::new_or_boxed(window)
}
#[cfg(not(feature = "unsize"))]
{
match StackDst::new_stable(window, |w| w as &dyn Window) {
Ok(s) => s,
Err(window) => StackDst::new_stable(Box::new(window), |w| w as &dyn Window)
.ok()
.expect("boxed window too big for StackDst!"),
}
}
}
fn update_window(&self, window: &mut dyn Window, dpi_factor: f32) {
let window = window.as_any_mut().downcast_mut().unwrap();
self.update_window(window, dpi_factor);
}
unsafe fn draw_handle(
&self,
draw: DrawIface<DS>,
window: &mut dyn Window,
) -> StackDst<dyn DrawHandle> {
let window = window.as_any_mut().downcast_mut().unwrap();
let h = <T as Theme<DS>>::draw_handle(self, draw, window);
#[cfg(feature = "unsize")]
{
StackDst::new_or_boxed(h)
}
#[cfg(not(feature = "unsize"))]
{
StackDst::new_stable(h, |h| h as &dyn DrawHandle)
.ok()
.expect("handle too big for StackDst!")
}
}
fn clear_color(&self) -> color::Rgba {
self.clear_color()
}
}
#[cfg(feature = "gat")]
impl<'a, DS: DrawSharedImpl, T: Theme<DS>> ThemeDst<DS> for T {
fn config(&self) -> MaybeBoxed<dyn Any> {
match self.config() {
Cow::Borrowed(config) => MaybeBoxed::Borrowed(config),
Cow::Owned(config) => MaybeBoxed::Boxed(Box::new(config.to_owned())),
}
}
fn apply_config(&mut self, config: &dyn Any) -> TkAction {
self.apply_config(config.downcast_ref().unwrap())
}
fn init(&mut self, shared: &mut SharedState<DS>) {
self.init(shared);
}
fn new_window(&self, dpi_factor: f32) -> StackDst<dyn Window> {
let window = <T as Theme<DS>>::new_window(self, dpi_factor);
StackDst::new_or_boxed(window)
}
fn update_window(&self, window: &mut dyn Window, dpi_factor: f32) {
let window = window.as_any_mut().downcast_mut().unwrap();
self.update_window(window, dpi_factor);
}
fn draw_handle<'b>(
&'b self,
draw: DrawIface<'b, DS>,
window: &'b mut dyn Window,
) -> StackDst<dyn DrawHandle + 'b> {
let window = window.as_any_mut().downcast_mut().unwrap();
let h = <T as Theme<DS>>::draw_handle(self, draw, window);
StackDst::new_or_boxed(h)
}
fn clear_color(&self) -> color::Rgba {
self.clear_color()
}
}
impl Window for StackDst<dyn Window> {
fn size_handle(&self) -> &dyn SizeHandle {
self.deref().size_handle()
}
fn as_any_mut(&mut self) -> &mut dyn Any {
self.deref_mut().as_any_mut()
}
}