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0032609: Visualization, Wasm_Window - handle mouse movements outside canvas element

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Wasm_Window::ProcessMouseEvent() - removed redundant check on EMSCRIPTEN_EVENT_MOUSEUP event.
ViewerTest and WebGL sample - mouse movements are now tracked on window element
to allow tracking updates when mouse with clicked button is moved outside canvas element.
This commit is contained in:
kgv
2021-10-06 23:55:43 +03:00
committed by smoskvin
parent f9ae10ed21
commit f1c209dc77
3 changed files with 72 additions and 9 deletions
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36
samples/webgl/WasmOcctView.cpp
View File

@@ -185,12 +185,16 @@ void WasmOcctView::initWindow()
emscripten_set_resize_callback (EMSCRIPTEN_EVENT_TARGET_WINDOW, this, toUseCapture, onResizeCallback);
emscripten_set_mousedown_callback (aTargetId, this, toUseCapture, onMouseCallback);
emscripten_set_mouseup_callback (aTargetId, this, toUseCapture, onMouseCallback);
emscripten_set_mousemove_callback (aTargetId, this, toUseCapture, onMouseCallback);
// bind these events to window to track mouse movements outside of canvas
//emscripten_set_mouseup_callback (aTargetId, this, toUseCapture, onMouseCallback);
//emscripten_set_mousemove_callback (aTargetId, this, toUseCapture, onMouseCallback);
//emscripten_set_mouseleave_callback (aTargetId, this, toUseCapture, onMouseCallback);
emscripten_set_mouseup_callback (EMSCRIPTEN_EVENT_TARGET_WINDOW, this, toUseCapture, onMouseCallback);
emscripten_set_mousemove_callback (EMSCRIPTEN_EVENT_TARGET_WINDOW, this, toUseCapture, onMouseCallback);
emscripten_set_dblclick_callback (aTargetId, this, toUseCapture, onMouseCallback);
emscripten_set_click_callback (aTargetId, this, toUseCapture, onMouseCallback);
emscripten_set_mouseenter_callback (aTargetId, this, toUseCapture, onMouseCallback);
emscripten_set_mouseleave_callback (aTargetId, this, toUseCapture, onMouseCallback);
emscripten_set_wheel_callback (aTargetId, this, toUseCapture, onWheelCallback);
emscripten_set_touchstart_callback (aTargetId, this, toUseCapture, onTouchCallback);
@@ -474,6 +478,21 @@ EM_BOOL WasmOcctView::onResizeEvent (int theEventType, const EmscriptenUiEvent*
return EM_TRUE;
}
//! Update canvas bounding rectangle.
EM_JS(void, jsUpdateBoundingClientRect, (), {
Module._myCanvasRect = Module.canvas.getBoundingClientRect();
});
//! Get canvas bounding top.
EM_JS(int, jsGetBoundingClientTop, (), {
return Math.round(Module._myCanvasRect.top);
});
//! Get canvas bounding left.
EM_JS(int, jsGetBoundingClientLeft, (), {
return Math.round(Module._myCanvasRect.left);
});
// ================================================================
// Function : onMouseEvent
// Purpose :
@@ -486,6 +505,17 @@ EM_BOOL WasmOcctView::onMouseEvent (int theEventType, const EmscriptenMouseEvent
}
Handle(Wasm_Window) aWindow = Handle(Wasm_Window)::DownCast (myView->Window());
if (theEventType == EMSCRIPTEN_EVENT_MOUSEMOVE
|| theEventType == EMSCRIPTEN_EVENT_MOUSEUP)
{
// these events are bound to EMSCRIPTEN_EVENT_TARGET_WINDOW, and coordinates should be converted
jsUpdateBoundingClientRect();
EmscriptenMouseEvent anEvent = *theEvent;
anEvent.targetX -= jsGetBoundingClientLeft();
anEvent.targetY -= jsGetBoundingClientTop();
return aWindow->ProcessMouseEvent (*this, theEventType, &anEvent) ? EM_TRUE : EM_FALSE;
}
return aWindow->ProcessMouseEvent (*this, theEventType, theEvent) ? EM_TRUE : EM_FALSE;
}