Method SliderScalar

KBotExt/imgui/imgui_widgets.cpp:2980–3061

Note: p_data, p_min and p_max are _pointers_ to a memory address holding the data. For a slider, they are all required. Read code of e.g. SliderFloat(), SliderInt() etc. or examples in 'Demo->Widgets->Data Types' to understand how to use this function directly.

// Note: p_data, p_min and p_max are _pointers_ to a memory address holding the data. For a slider, they are all required.
// Read code of e.g. SliderFloat(), SliderInt() etc. or examples in 'Demo->Widgets->Data Types' to understand how to use this function directly.
bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* p_data, const void* p_min, const void* p_max, const char* format, ImGuiSliderFlags flags)
{
	ImGuiWindow* window = GetCurrentWindow();
	if (window->SkipItems)
		return false;

	ImGuiContext& g = *GImGui;
	const ImGuiStyle& style = g.Style;
	const ImGuiID id = window->GetID(label);
	const float w = CalcItemWidth();

	const ImVec2 label_size = CalcTextSize(label, NULL, true);
	const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y * 2.0f));
	const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));

	const bool temp_input_allowed = (flags & ImGuiSliderFlags_NoInput) == 0;
	ItemSize(total_bb, style.FramePadding.y);
	if (!ItemAdd(total_bb, id, &frame_bb, temp_input_allowed ? ImGuiItemFlags_Inputable : 0))
		return false;

	// Default format string when passing NULL
	if (format == NULL)
		format = DataTypeGetInfo(data_type)->PrintFmt;

	const bool hovered = ItemHoverable(frame_bb, id, g.LastItemData.InFlags);
	bool temp_input_is_active = temp_input_allowed && TempInputIsActive(id);
	if (!temp_input_is_active)
	{
		// Tabbing or CTRL-clicking on Slider turns it into an input box
		const bool input_requested_by_tabbing = temp_input_allowed && (g.LastItemData.StatusFlags & ImGuiItemStatusFlags_FocusedByTabbing) != 0;
		const bool clicked = hovered && IsMouseClicked(0, id);
		const bool make_active = (input_requested_by_tabbing || clicked || g.NavActivateId == id);
		if (make_active && clicked)
			SetKeyOwner(ImGuiKey_MouseLeft, id);
		if (make_active && temp_input_allowed)
			if (input_requested_by_tabbing || (clicked && g.IO.KeyCtrl) || (g.NavActivateId == id && (g.NavActivateFlags & ImGuiActivateFlags_PreferInput)))
				temp_input_is_active = true;

		if (make_active && !temp_input_is_active)
		{
			SetActiveID(id, window);
			SetFocusID(id, window);
			FocusWindow(window);
			g.ActiveIdUsingNavDirMask |= (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right);
		}
	}

	if (temp_input_is_active)
	{
		// Only clamp CTRL+Click input when ImGuiSliderFlags_AlwaysClamp is set
		const bool is_clamp_input = (flags & ImGuiSliderFlags_AlwaysClamp) != 0;
		return TempInputScalar(frame_bb, id, label, data_type, p_data, format, is_clamp_input ? p_min : NULL, is_clamp_input ? p_max : NULL);
	}

	// Draw frame
	const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
	RenderNavHighlight(frame_bb, id);
	RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);