Method UpdateMouseInputs

KBotExt/imgui/imgui.cpp:8592–8665

}

static void ImGui::UpdateMouseInputs()
{
	ImGuiContext& g = *GImGui;
	ImGuiIO& io = g.IO;

	// Mouse Wheel swapping flag
	// As a standard behavior holding SHIFT while using Vertical Mouse Wheel triggers Horizontal scroll instead
	// - We avoid doing it on OSX as it the OS input layer handles this already.
	// - FIXME: However this means when running on OSX over Emscripten, Shift+WheelY will incur two swapping (1 in OS, 1 here), canceling the feature.
	// - FIXME: When we can distinguish e.g. touchpad scroll events from mouse ones, we'll set this accordingly based on input source.
	io.MouseWheelRequestAxisSwap = io.KeyShift && !io.ConfigMacOSXBehaviors;

	// Round mouse position to avoid spreading non-rounded position (e.g. UpdateManualResize doesn't support them well)
	if (IsMousePosValid(&io.MousePos))
		io.MousePos = g.MouseLastValidPos = ImFloorSigned(io.MousePos);

	// If mouse just appeared or disappeared (usually denoted by -FLT_MAX components) we cancel out movement in MouseDelta
	if (IsMousePosValid(&io.MousePos) && IsMousePosValid(&io.MousePosPrev))
		io.MouseDelta = io.MousePos - io.MousePosPrev;
	else
		io.MouseDelta = ImVec2(0.0f, 0.0f);

	// Update stationary timer.
	// FIXME: May need to rework again to have some tolerance for occasional small movement, while being functional on high-framerates.
	const float mouse_stationary_threshold = (io.MouseSource == ImGuiMouseSource_Mouse) ? 2.0f : 3.0f; // Slightly higher threshold for ImGuiMouseSource_TouchScreen/ImGuiMouseSource_Pen, may need rework.
	const bool mouse_stationary = (ImLengthSqr(io.MouseDelta) <= mouse_stationary_threshold * mouse_stationary_threshold);
	g.MouseStationaryTimer = mouse_stationary ? (g.MouseStationaryTimer + io.DeltaTime) : 0.0f;
	//IMGUI_DEBUG_LOG("%.4f\n", g.MouseStationaryTimer);

	// If mouse moved we re-enable mouse hovering in case it was disabled by gamepad/keyboard. In theory should use a >0.0f threshold but would need to reset in everywhere we set this to true.
	if (io.MouseDelta.x != 0.0f || io.MouseDelta.y != 0.0f)
		g.NavDisableMouseHover = false;

	io.MousePosPrev = io.MousePos;
	for (int i = 0; i < IM_ARRAYSIZE(io.MouseDown); i++)
	{
		io.MouseClicked[i] = io.MouseDown[i] && io.MouseDownDuration[i] < 0.0f;
		io.MouseClickedCount[i] = 0; // Will be filled below
		io.MouseReleased[i] = !io.MouseDown[i] && io.MouseDownDuration[i] >= 0.0f;
		io.MouseDownDurationPrev[i] = io.MouseDownDuration[i];
		io.MouseDownDuration[i] = io.MouseDown[i] ? (io.MouseDownDuration[i] < 0.0f ? 0.0f : io.MouseDownDuration[i] + io.DeltaTime) : -1.0f;
		if (io.MouseClicked[i])
		{
			bool is_repeated_click = false;
			if ((float)(g.Time - io.MouseClickedTime[i]) < io.MouseDoubleClickTime)
			{
				ImVec2 delta_from_click_pos = IsMousePosValid(&io.MousePos) ? (io.MousePos - io.MouseClickedPos[i]) : ImVec2(0.0f, 0.0f);
				if (ImLengthSqr(delta_from_click_pos) < io.MouseDoubleClickMaxDist * io.MouseDoubleClickMaxDist)
					is_repeated_click = true;
			}
			if (is_repeated_click)
				io.MouseClickedLastCount[i]++;
			else
				io.MouseClickedLastCount[i] = 1;
			io.MouseClickedTime[i] = g.Time;
			io.MouseClickedPos[i] = io.MousePos;
			io.MouseClickedCount[i] = io.MouseClickedLastCount[i];
			io.MouseDragMaxDistanceSqr[i] = 0.0f;