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example: synchronize the canvas before the window pops up.

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This ensures that the window pops up with the appropriate content,
since windows can be popped up asynchronously with mainloop.
This commit is contained in:
Hermet Park 2024-06-25 21:36:47 +09:00 • committed by Mira Grudzinska
parent 7145c66b00
commit 4c57a64a82
1 changed files with 28 additions and 33 deletions
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61
examples/Example.h
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@ -188,6 +188,17 @@ struct Window
return false;
}
bool ready()
{
if (!example->content(Window::canvas, width, height)) return false;
//initiate the first rendering before window pop-up.
if (!verify(canvas->draw())) return false;
if (!verify(canvas->sync())) return false;
return true;
}
void show()
{
SDL_ShowWindow(window);
@ -250,7 +261,6 @@ struct Window
}
}
virtual bool ready() { return false; }
virtual void resize() {}
virtual void refresh() {}
};
@ -269,22 +279,17 @@ struct SwWindow : Window
SwWindow(Example* example, uint32_t width, uint32_t height) : Window(tvg::CanvasEngine::Sw, example, width, height)
{
window = SDL_CreateWindow("ThorVG Example (Software)", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, width, height, SDL_WINDOW_HIDDEN | SDL_WINDOW_RESIZABLE);
}
bool ready() override
{
//Create a Canvas
canvas = tvg::SwCanvas::gen();
if (!canvas) {
cout << "SwCanvas is not supported. Did you enable the SwEngine?" << endl;
return false;
return;
}
Window::canvas = canvas.get();
resize();
return example->content(Window::canvas, width, height);
}
void resize() override
@ -325,27 +330,22 @@ struct GlWindow : Window
#endif
window = SDL_CreateWindow("ThorVG Example (OpenGL/ES)", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, width, height, SDL_WINDOW_OPENGL | SDL_WINDOW_HIDDEN | SDL_WINDOW_RESIZABLE);
context = SDL_GL_CreateContext(window);
}
virtual ~GlWindow()
{
SDL_GL_DeleteContext(context);
}
bool ready() override
{
//Create a Canvas
canvas = tvg::GlCanvas::gen();
if (!canvas) {
cout << "GlCanvas is not supported. Did you enable the GlEngine?" << endl;
return false;
return;
}
Window::canvas = canvas.get();
resize();
}
return example->content(Window::canvas, width, height);
virtual ~GlWindow()
{
SDL_GL_DeleteContext(context);
}
void resize() override
@ -419,6 +419,17 @@ struct WgWindow : Window
surfaceDesc.nextInChain = (const WGPUChainedStruct*)&surfaceNativeDesc;
surfaceDesc.label = "The surface";
surface = wgpuInstanceCreateSurface(instance, &surfaceDesc);
//Create a Canvas
canvas = tvg::WgCanvas::gen();
if (!canvas) {
cout << "WgCanvas is not supported. Did you enable the WgEngine?" << endl;
return;
}
Window::canvas = canvas.get();
resize();
}
virtual ~WgWindow()
@ -427,22 +438,6 @@ struct WgWindow : Window
wgpuInstanceRelease(instance);
}
bool ready() override
{
//Create a Canvas
canvas = tvg::WgCanvas::gen();
if (!canvas) {
cout << "WgCanvas is not supported. Did you enable the WgEngine?" << endl;
return false;
}
Window::canvas = canvas.get();
resize();
return example->content(Window::canvas, width, height);
}
void resize() override
{
//Set the canvas target and draw on it.