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
|
#include "cru/platform/graphics/web_canvas/WebCanvasGraphicsFactory.h"
#include "cru/platform/graphics/web_canvas/WebCanvasPainter.h"
#include "cru/platform/graphics/web_canvas/WebCanvasRef.h"
#include "cru/platform/graphics/web_canvas/WebCanvasResource.h"
#include <optional>
namespace cru::platform::graphics::web_canvas {
namespace {
void contextDoTransform(emscripten::val context, const char* method,
const Matrix& matrix) {
context.call<void>(method, matrix.m11, matrix.m12, matrix.m21, matrix.m22,
matrix.m31, matrix.m32);
}
} // namespace
WebCanvasPainter::WebCanvasPainter(WebCanvasGraphicsFactory* factory,
emscripten::val context,
std::optional<Matrix> current_transform)
: WebCanvasResource(factory),
context_(context),
current_transform_(current_transform.value_or(Matrix::Identity())) {
contextDoTransform(context_, "setTransform", current_transform_);
}
WebCanvasPainter::~WebCanvasPainter() {}
Matrix WebCanvasPainter::GetTransform() { return current_transform_; }
void WebCanvasPainter::SetTransform(const Matrix& transform) {
current_transform_ = transform;
contextDoTransform(context_, "setTransform", current_transform_);
}
void WebCanvasPainter::ConcatTransform(const Matrix& transform) {
current_transform_ *= transform;
contextDoTransform(context_, "transform", transform);
}
void WebCanvasPainter::Clear(const Color& color) {}
WebCanvasRef WebCanvasPainter::GetCanvas() {
return WebCanvasRef(context_["canvas"]);
}
} // namespace cru::platform::graphics::web_canvas
|
